bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluation of Recycled Aggregate Concrete Cracking through Ring Test
Authors: Corinaldesi Valeria , Moriconi Giacomo
Published: June 2012

Cracks can reduce the service life of a concrete structure by allowing aggressive agents to penetrate through it in easy ways. Free shrinkage evaluation alone is not enough to determine if cracking can be expected in a structure since concrete creep behaviour, stiffness and toughness also influence the potential for cracking. Consequently, it is rather interesting to perform restrained shrinkage tests, such as the ring test according to ASTM C 1581–04. The testing procedure involves concrete ring specimens restrained by an inner steel ring on which strain gauges are placed to determine the age of cracking, since abrupt changes in the steel strain occur when concrete is cracked. Both the ring test and free shrinkage test should be carried out in the same exposure conditions, 21°C and 50% relative humidity. Moreover, compressive and tensile strengths of concrete were evaluated on cubic specimens at the time of its cracking and up to 28 days of curing. By means of analytical and numerical models of the ring specimen, some useful information on the stress induced in the material and on the tensile creep behaviour of concrete can be extrapolated thus allowing to better interpret the experimental results. This experimental procedure enables to study the influence of concrete mixture composition on the potential for early-age cracking of concrete. In particular, in this work the influence on early-age cracking of recycled-concrete aggregate partially replacing virgin sand was tested.
Stainless Steel and Rust Steel
Authors: Xu Jian Feng , Li Bing
Published: June 2012

As the most common material, concrete shows one of the most essential beauty, with the natural appearance of calm charm, innate, some heavy and elegant modern building materials can not be replicated and comparable. Material itself has a soft feel, rigid sense of warmth, cold and flu, and not only the spirit of the human impact on the senses, and can express the emotion building. So architects believe that this is a noble simplicity, seems to be simple, in fact, more than the magnificent artistic effect.
Analysis of Reinforced Concrete Slabs with Reinforcements under Partitions with Finite Element Method
Authors: Zhou Tie Gang , Jiang Hai Tao
Published: June 2012

There are no clear design standards for the reinforcements or concealed beams under partitions in reinforced concrete slabs which often appear in reinforced-concrete residential buildings. Designers, in most cases, have to rely on engineering experiences after a simple calculation to design such reinforcements or concealed beams. In this paper, we built a finite element model of such reinforced concrete slabs in SAP2000. The element for the plates was layered shell element. By changing the span , thickness and boundary constraints of the plate, the materials of the partition , the diameter of the reinforcements to analyze the force of the plate. Based on results analyzed, we discuss the internal forces of such plates, and offer suggestions for the selection of partitions and design of reinforcements.
Study on Special Thermal-Insulation Masonry Mortar for the North Cold Regions Autoclaved Aerated Concrete
Authors: Xiao Li Guang , Li Rui Bo , Yan Cun You , Li Guan Jie
Published: June 2012

Because the difference between the autoclaved aerated concrete and ordinary masonry mortar with thermal conductivity is too large, also easy to cause the bricking-up appearance the cold bridge and even the phenomenon of condensation, the author have study special thermal-insulation masonry mortar for autoclaved aerated concrete, about solving between the aerated concrete and ordinary mortar problem filling cracks, it is more important to resolve the big difference between the thermal conductivity, improving the insulation properties of aerated concrete special mortar. The performance as per special masonry mortar and plaster mortar for autoclaved aerated concrete (China national standard JC890-2001), supporting thermal-insulation masonry mortar effectively improved the cold bridge phenomenon of energy loss occurs.
The Influence of Bearing Capacity of Self-Stressed CFST Members for Different Strength Grades and Self-Stressed Magnitudes of Concrete
Authors: Zhou Shui Xing , Ma Yue , Sun Dong Sheng , Li Lu , Wu Cheng
Published: June 2012

According to the unified theory of general concrete filled steel tube, this paper puts forward a constitutive relationship model of the self-stressed concrete filled steel tube, which was verified by experiments and finite element methods. On the basis of the above, the influences on the bearing capacity of self-stressed CFST members were analyzed about the strength grades and magnitudes of self-stress of confined concrete. The results show that the bearing capacity of the self-stressed concrete filled steel tube members will be improved with the increase of the magnitudes of self-stress and concrete strength grades. Compared to the general CFST in the same condition, the maximum of the bearing capacity can be approximately enhanced 20%.
Application of Gypsum Composite Concrete in the Antique Building Bracket Set
Authors: Liu Xiao Hong , Liu Jia Li , Zhao Fei Peng
Published: June 2012

The application of the gypsum composite concrete made with gypsum - cement - sawdust and additives on the antique architectural Bracket set was studied. Component design, mold making, pouring and conserving concrete of the Bracket set which was made by gypsum concrete, and production process of assembling and installing, construction and installation methods were introduced.
The Analysis of Synchronous and Influencing Factors on Building Facade Opening and Architectural Design
Authors: Sun Bing
Published: June 2012

A good building needs the perfect functions and construction techniques besides beautiful exterior view. The facade opening is the main means for building daylighting and ventilation. The quantity, size and configuration of facade openings can change the figure of buildings. Facade opening must be designed with architectural designing simultaneously. This way is beneficial for the unification of building function and aesthetics.
The Cula House - A Specific Case Study
Authors: Mitrache Anca
Published: June 2012

The cula house, a type of fortified boyar dwelling prevalent in the XVIIIth century in south-western regions of Romania, is one of the most intriguing typologies in traditional Romanian architecture. Halfway between fortified tower and dwelling, with a relatively brief history and disputed architectural lineage, the cula house makes for an interesting case study because it represents the capacity of traditional Romanian architecture to assimilate foreign influences while remaining autochthonous. The paper outlines the history, characteristics and uniqueness of this architectural program, less known beyond the borders of Romania.
Thoughts on Vernacular Architecture Research and Contemporary Regional Architectural Creation
Authors: Li Jun Huan , Bao Hong Yuan
Published: June 2012

The article begins by inspecting the absence of architectural characteristics under the background of globalization. The brief situation of Chinese traditional architecture research and regional architectural creation are organized. Points are made about the significance of research in the construction of urban and rural living environment. It is also important that the local building wisdom and culture be explored and the precious heritage of vernacular architectural culture be passed on. The simple building idea and ecological view should also be succeeded. And that is the route we must take to undertake contemporary regional architectural creation.
Analysis on Creative Thinking of Contemporary Japanese Architects from the Angle of National Characters
Authors: Shan Lin Lin , Liu Song Fu
Published: June 2012

In Asia, contemporary Japanese architecture owns bright national characters, and meanwhile is geared to international standards. As an embodiment of nationalism, national characters have a direct influence on the creative thinking of architecture. Japanese people owns the double character of enlargement and reduction, as well as opening and closure, and the insularity character of delicacy and love of nature, thus contemporary Japanese architects own the nature of combining the “big” and the “small” as well as opening and closure, and the architecture form, aspiring after the creative thinking of harmonious coexistence with the nature, is delicate and subtle.
Study of Architectural Design Method Based on Concept of Wind Environment
Authors: Duan Xiang , Xu Wei Qi
Published: June 2012

Starting with the indisposed wind environment arisen from the development of urban construction,this paper analyses its influence to the mural and public environment of buildings.Results show that wind environment building design makes architectural design method more rational and sophisticated,and approaches the topic from the angles of general layout and building forms,and sevaral methods such as wind tunnel modeling testcan and computer numerical simulation are also presented.
A Study of the Overall Reconstruction Design of Shenyang North Railway Station and the Station Area
Authors: Li Yan , Chen Lei , Chen Yu , Zhang Dong Xu
Published: June 2012

Through analyzing the status of the Shenyang North Railway Station and the area in front of it, and combining the reality experience of the development in domestic and foreign urban railway construction, propose the imagine about the overall reconstruction of Shenyang north railway station and the area in front of it, and make it become the important modern integrated traffic hub in Shenyang.
Application of 3D Stereo Visualization System in Virtual Architectural Design
Authors: Jiang Yan , Tang Jian
Published: June 2012

The application of virtual reality in architectural design has been the focus of attention. But the true 3D sense of immersion is still a dream for the most designers and clients when they watch the computer screen. A new computer stereo vision imaging system was constructed to help us obtain 3D visual of architectures and the implementation process became easier. And the application of advanced three-dimensional vision technology offered a more scientific, more interesting means of display and human-computer interaction. By using 3D stereo vision imaging system, all designers and users can obtain 3D visual observation of virtual buildings and virtual environments with a good sense of immersion at any time and any place.
Categorizing the Roof Forms of Indoor Ballparks
Authors: Zomorodian Zahra Sadat , Bannazadeh Bahareh , Maghareh Mohammad Reza
Published: June 2012

Stadiums are large theaters for entertainment purposes while being social and architectural propaganda in towns and cities built in. Design priorities are achieved in these buildings if structure and enclosure are recognized carefully in all scales. Indoor Ballparks are a type of stadiums that support outdoor sports, such as baseball, football or soccer. The numbers of these wide span structures are increasing due to versatile needs today. These structures are being built with different shapes and structural forms around the world nowadays. In this paper 76 Indoor Ballparks with the capacity of over 15000 occupants are considered and categorized into 4 categories based on their roof forms including One-way Curved Roofs (OCR), Two-way Curved Roofs (TCR), Flat & Gable Roofs (FAGR) and Exposed Structural Element Roofs (ESER). Methodology of this classification and the results are presented in this paper.
External Environment Design of High-Rise Buildings under Technological Innovation
Authors: Hou Zhao Ming , Yao Jia Wei
Published: June 2012

Proposing design principles to improve the external environment of high-rise buildings, including the principle of integrity, the principle of symbiosis, the principle of balance, the principle of environmental enhancement and the principle of economic. Specifically, a series of measures proposed to achieve good urban space of the high-rise buildings.
Research on the Designing of Sustainable Elevation Modification of Building Alongside Street in the Warm-House Project — Based on the Example of Elevation Modification of Buildings Alongside Ziyou Street of Changchun City
Authors: Li Ye Ling , Wang Xin Yu , Xia Yin Fei
Published: June 2012

”Industrial elements” is a kind of special symbol related to the manufacturing production within industrial buildings. This paper will pick up the “industrial elements” as the starting point to analyze the application of it in the transformation and reuse for the old industrial buildings, thus to analyze fatherly the value and significance of the “industrial elements” in the old industrial building transformation and reuse. Based on the activities of plant mapping, shooting on site, field visit and referring to the factory history to Changchun tractor plant and shaft plant (hereinafter referred to as long drag and shaft plant), obtained amount of valuable data, and put forward targeted transformation proposal with practical significance and the trend of reuse, introduced the design methodology in detail regarding the "industrial elements" in the transformation and reuse of old buildings for long drag and shaft plant, then come up with the creative rebuilding solution.
Product Variant Design Based on Extensible Modular Method
Authors: Zong Xue Mei , Wang Jing , Zhang Li Ping , Ma Hong Guang , Huang Yan Qun
Published: June 2012

Variant design is the main form of most manufacturing enterprises. In this paper, an extensible modular method is proposed to enable better and faster design. The structure module is set size inner-related, and then when the user requirements change, the key structural variables can be adjusted followed by the alterations of the driven sizes, also these alterations can be verified by the engineering analysis. Therefore, the product variant design process can be preceded effectively with the extensible modules.
Drying Shrinkage and Prediction Model of Alkali-Slag Concrete
Authors: Fu Ya Wei , Cai Liang Cai , Wu Yong Gen
Published: June 2012

Green high performance alkali-slag concrete(ASC) was prepared by adding Na2SiO3 and NaOH complex activator in slag. Physical, mechanical and drying shrinkage performance of ASC were studied by workability, strength and drying shrinkage tests. The results show that slump of ASC exceeds 160mm, fluidity and workability is excellent. 28d compressive strength and flexural trength of ASC are 90MPa and 8.36MPa, 7d strength are 83.7MPa and 7.47MPa, which belongs to high–early strenth. drying shrinkage of ASC are ratherish bigger than portland concrete(PC) anytime, but correspond to PC at later period from 28d, anyhow ASC belonged to low deformation concrete but with ratherish bigger early deformation, therefore early keep should be reinforced. drying shrinkage of ASC increase with dosage of slag anytime, but don’t increase with ratio of activator solution to slag linearly. And a suited logarithm prediction model of ASC was established, which can predict the drying shrinkage of ASC.
Mechanical Properties of Interface between Coarse-Grained Soil and Concrete
Authors: Fu Hua , Li Yun Hui , Han Hua Qiang , Ling Hua
Published: June 2012

Comparative tests on interfaces between different materials are performed by means of the self-developed NHRI-4000 high-performance large interface shear apparatus. Change of mechanical properties of interfaces between different coarse-grained soils and concrete is investigated owing to the differences of materials. The influences of the existence of slurry on the strength indices of the interfaces are analyzed. The test results show that shear failures all occur in the contact zone of specimens. The properties of materials and the differences of particle shapes have great influences on the strength and deformation characteristics of interfaces as well as the residual shape of shear plane after shearing. The specific exhibition is as follows: (1) the strength and deformation indices of rock-fill materials with distinct edges are significantly superior to those of sand-gravel materials with good roundness; (2) the existence of slurry leads to obvious decrease of mechanical indices of the interfaces.
Research on Adaptability of SOHO Living Mode Design
Authors: Li Li , Jia Xiao Hu , Zheng Qing He
Published: June 2012

Based on analyzing basic situation and requirements of SOHO residential space, the paper researched on the design principles of SOHO residential space, which including space complicatedness, internal environment comfort and residential space individuality. The results will provide the basis for the design and application for the SOHO residential mode.
Architectural Model of Universal Structure: Light, Material and Natural Elements in Architectural Symbol and Aesthetics
Authors: Wen Yi Feng
Published: June 2012

This paper discusses abstract and empathy roles of physical elements in architecture. The earliest palace was constructed as representation of "universal structure", and architecture was the first model of universe. Therefore, light, material and natural elements in architecture have fundamental significance and aesthetic importance as symbol of universal structure. This paper discusses the thought of natural elements in both eastern and western culture, and summarized basic metaphorical meanings of light, material and natural elements as architectural symbols and aesthetic images. The conclusion is that architectural thinking about the material is values reason and ontology which is different from that of engineering mechanics concerning tool reason. The light, material and natural elements in architecture have archetype significance beyond cultural differences.
Research of Maintenance Decision-Making about Existing Building Structure Based on the Life-Cycle Cost Theory
Authors: Liu Jun E , Wang Yue Chong , Teng Ren Dong
Published: June 2012

The project is a complicated systems engineering. The theory of whole life cycle cost considers roundly each phase of the project such as design. life cycle cost theory is applied to fields of maintenance and reinforcement about existing building structure, modeling with a reinforced concrete frame structure deterioration, it made a research about the influence of maintenance, repair and reinforcement measures to the reliability and deterioration speed of existing structure while analyzing its life cycle cost, considering economic optimization problem so as to select economy and reasonable maintenance scheme from multiple plans.
On the Central Concept of Architectural Philosophy: Art
Authors: Shi Jian He , Wu Xian Wei
Published: June 2012

Aesthetic taste as the main value of life is the central task of building arts. Artistic characteristics of architecture reflect human glory and always exist in our thousands of years of architectural history. The art pursuit of architecture is still the focus for the public especially architects. Therefore, the central concept of the construction philosophy is the art of architecture.
Zhengzhou City Image and Symbolization — The Effect of Culture - Shaolin Temple
Authors: Lu You , Liu Yan Fang , Wang Zhi , Xiao Xiao
Published: June 2012

City image symbol as a city development of soft power, its symbolic connotations become the core information of city transmission, which is the city's cultural precipitation accumulation in miniature..City symbol not only as a visual symbol, and the special symbol image accelerate city comprehensive development, displays a full cultural connotation. This article from the Shaolin Temple culture and influence in the world, talking about the Shaolin Temple to the ancient city of Zhengzhou the influence of image symbols. The" Central Plains " Zhengzhou brand image, in the legendary" The first ancient temples" light, while adding commercial breath making the Shang cultural icons of Zhengzhou spread and establish brand effect.
An Aesthetic Interpretation of Contemporary Architecture Skin
Authors: Yan Yan Huang , Li Weiyi
Published: June 2012

The skin, as an expressive method of the architecture, has become the main object of aesthetic study of the contemporary architecture. This paper makes an aesthetic interpretation of the visualized architecture skin, ecological skin and non-materialistic skin respectively.
Research on High-Quality Soft Shadow of Building Based Shadow Map
Authors: Shang Tao , Zhang Shui Peng
Published: June 2012

Image rendering of shadow faces a problem existed for a long time,that is the contradiction of quality and performance. Variant algorithms are presented to ameliorate this problem,shadow map is the one which is representative for that. Even though shadow maps have been widely used for the shadow of Three-dimensional scene,some imperfection still exist in this method like aliasing problem.So,the focus of the paper is introduce an algorithm which layering the data sets of the large scale building's shadow rapidly and intelligently based shadow map. First, we ascertain the fragment which create the shadow by shadow mapping's two scan. Second, we process the float data in the depth buffer by using uniformization and render the two depth data in the texture.Then use Gauss Filter to blur.Finally,use the algorithm of BIRCH cluster the uniformization data to improve the obscure and tweened effect.This method brings reduction of aliasing problem with low overhead as well as performance to a certain extent .
Reusing Old Construction Materials in the Renovation of Traditional Villages — A Case Study of the Mou Estate of Qixia City, Shandong Province
Authors: Li Yan , Li Zhe , Song Ying
Published: June 2012

The Mou Estate in Qixia City, Shandong Province is listed as an important heritage site under state protection. In view of its cluttered environment and dilapidated buildings, the renovation plan puts forward three protection strategies: preserving traditional mode of production and way of life, protecting the village's overall environment and utilizing local building materials for renovation, with old materials particularly preferred. Thus mass demolition and total reconstruction can be avoided. Historical development, spatial makeup, mode of production and way of life can be preserved and heritage protection and cultural tourism can be achieved at the same time.
Study on Dissipation of Excess Pore Water Pressure of Clay
Authors: Li Jian Zhong , Hao Kangning
Published: June 2012

Dissipation of excess pore water pressure of saturation clay was discussed in the paper. Monotonic loading, unloading-reloading, and creep tests of one dimensional compression were performed to study the orderliness of dissipation of excess pore water pressure. In the drained consolidated tests, strain rate was changed step by step to check the effects of excess pore water pressure on effective axial stress. Creep tests were performed in different stage of loading and unloading procedure under different effective axial stress. In order to estimate the effects of excess pore water on effective axial stress more precisely, excess pore water pressure ratio was introduced. Test results show that: (1) excess pore water pressure changed gradually as strain rate changed abruptly, while excess pore water pressure ratio changed quickly; (2) excess pore water pressure maintained constant shortly after the change of strain rate during monotonic loading tests under small strain rate; (3) excess pore water pressure may be smaller than back pressure during unloading-reloading tests, in which, excess pore water pressure ratio is negative; (4) there neutral creep existed in unloading-creep-unloading procedure. Excess pore water pressure ratio equal to 0 and excess pore water pressure maintained a constant value equal to the back pressure in neutral creep.
Isolation on the Top of Columns of a Building Analysis Based on ETABS
Authors: Wu Ying Xiong , Huang Peng Yun , Huang Ying , Zhu Jian Hui , Wang Yun Xun
Published: June 2012

Taking a practical five-story frame-structure with opening floor as background, the finite element analysis software ETABS is used to perform analysis of the first-floor isolation. Time-history analysis for the structures showed that, vibration reduction effect of the superstructure is obvious under 7 degree earthquakes. The substructure (isolated columns) is still in elastic deformation stage under 7 degree rare earthquakes, which proves that isolation technology on the top of columns can improve the seismic behavior of the first-floor weak frame-structure. Meanwhile, mechanical analyses and seismic design of the isolated columns are performed. The results indicated that rational design ensures the structure’s seismic safety.
Research on Organization Network Model for Construction Project Based on Social Network Analysis
Authors: Lin Yang
Published: June 2012

Current project organization is mostly non-professional and low maturity, which lack of mature and visual methods and tools. Engineering project has obvious social characteristics, which includes not only material operating activities also cooperation and collaboration of complex staff a large number of social activities, etc. This paper point out the organization of control of project management into the field of social network analysis(SNA), A qualitative social network model for construction project organization is established, and then this model is quantitatively analyzed with the help of UCINET, which can fully demonstrate the organization and management in the areas of project feasibility.
Study on Rational Ratios of Lateral Stiffness for Masonry Building with Frame Structure at First Two Stories
Authors: Zhou Xiao Long , Li Ying Min , Song Lin Bo , Tan Qian
Published: June 2012

There are two typical seismic damage characteristics to the masonry building with frame shear wall structure at first two stories, and the lateral stiffness ratio of the third storey to the second storey is one of the key factors mostly affecting the seismic performance of this kind of building. However, some factors are not considered sufficiently in current Chinese seismic codes. According to the theory of performance-based seismic design, the seismic performance of this kind of structure is analyzed in this paper by taking time-history analysis on models which with different storey stiffness ratios. The results show that when the lateral stiffness ratio controlled in a reasonable range, the upper masonry deformation can be ensured in a range of elastic roughly, and the bottom frame can be guaranteed to have sufficient deformation and energy dissipation capacity. Finally, according to the seismic performance characteristics of masonry building with frame shear wall structure at first two stories, especially the characteristics under strong earthquakes, a method of simplified calculation model for the upper masonry is discussed in this paper.
Study on Composite Soil Nailing Wall in Soft Soil Area of Complex Condition with Emphasis on Analysis by Finite Element Analysis
Authors: Wang Bing
Published: June 2012

Based on a typical projects, the horizontal displacement in depth, horizontal displacement and vertical subsidence of pile top, and settlements of surrounding buildings are monitored with the process on digging of deep foundation pit. The study on digging process of foundation pit is analyzed by using finite element software. Using mapped meshing method, from mixing the pile near the semi-circular area (radius = 50m), the meshing appropriate encryption in order to improve the accuracy of the external semi-circular area (radius = 65m) mesh is less appropriate sparse.Layer by layer to kill the layers of the soil unit and activate the soil nails (spring element), the simulated excavation and synchronization of soil nails construction.Verify the arc form of failure surface in side of deep foundation pit in soft soil area. Which is valuable for reference to similar structure engineering of foundation pit.
On the Technological Innovation Chain’s Structure, Formation and Operation
Authors: Peng Shuang , Wu Shao Bo , Tu Chun Yan
Published: June 2012

The technological innovation chain is the innovation system that encircles the core technology and is based on supporting technology. The supporting technology not only includes vertical (the upstream and downstream) complementary supporting technology, but also includes the horizontal supporting technology based on the same technical link. The formation of the technology innovation chain is resulted from the limitedness of the technological knowledge, the complementarity of the products, and the pursuit for economy of velocity of innovation. The operation mechanism of the technological innovation chain includes three ways: which are the operating mechanisms relatively based on innovation platform, patent pool, and the R&D contract.
The Architect Test Sample Selection Model and its Application Based on Genetic Algorithm
Authors: Li Qiang , Li Hui Min , Jiang Hai Lan , Yuan Feng
Published: June 2012

This paper introduces the researches and applications based on genetic algorithm in the sample selection of papers. We followed the steps of the work and separate the model of four sub models: the pre-process model, sample selection model, property model and reefed model. We consider form all aspect which may affects the decision of sample selection and solve them. Form the instance, the genetic algorithm we discussed can improve the reliability and efficiency of the national first degree architecture test on some degree.
BIM Application and Practice with Rhino — A Case Study of Steel Construction in Datong Library
Authors: Li Hui Yong , Du Shu Bo , Sha Zhi Hui
Published: June 2012

BIM is widely accepted in construction because of its concept of integration, and will be the mainstream in the future. BIM became more and more important in collaborating on all the working stages during building life-cycles due to its great advantage in data integration and processing. The connection between Rhino, a designing software, and BIM becomes necessary. This article introduced the adoption and implementation of Rhino in the Steel Detailed Design and Construction in Datong Library. The guidance and effectiveness of parameterized models generated by Rhino in smoothing the complicated steel construction process was also introduced.
Application of X-CT Technology in the Microstructure Analysis of Cement-Based Materials
Authors: Zhang Ping , Qin Hong Gen , Wan Ke Shu , Pang Chao Ming , Sun Wei , Zhou Wei Ling
Published: June 2012

Based on the small density changes of each phases, the defects and morphology of cement-based materials can be observed with the X-ray computed tomography (X-CT). The application of X-CT technology in the cement-based materials was reviewed in this paper. The microstructural changes during processes of carbonation, corrosion and steel corrosion were observed with X-CT equipment. It showed that the resolution of X-CT technology was limited and can up to 20um when the sample is small enough. The distribution of fibers, the pore structures and the cracks could be observed with 2D/3D images, and statistical information could also be calculated by the software. So the X-CT equipment played an important role in the strengthening and toughening mechanism analysis of fiber-reinforced concrete, porosity calculations and antifreeze analysis of general concrete and air-entrained concrete. The structural changes of concrete under the conditions of service, after carbonation, dissolution and steel corrosion could also be observed clearly.
Statistical Analysis of Fundamental Periods of Frame-Shear Wall Structures
Authors: Gao Yan Qiang , Liu Wen Feng
Published: June 2012

The differences of empirical formulas of China, United States, Japan, and Europe for estimating the fundamental periods of frame-shear wall structures are investigated. Summing up paradigms of the empirical formulas from the above representation countries, the paradigm formulas expressed as single-variable exponential type, single-variable linear type, and multi-variable non-linear type. Using statistical data of 88 groups of the measured fundamental period for least-squares regression analysis, and the effect of fitting regression formula is judged by the norm of relative error‖δ‖2 , the norm of root mean square error‖RMSE‖2 , and the norm of residual mass‖CRM‖2Italic textb> . The results show that: the single-variable exponential type has wide application and gets closer with measured fundamental period; the single-variable linear type is briefly, and the single-variable based on structural height has smaller error than the single-variable of stories; the multi-variable non-linear type is very complex and larger error compared with the measured fundamental period. Considering the formula in the form of simple, practical and consistent with the codes, this paper gives single-variable exponential type as recommended empirical formula for estimating the fundamental periods of frame-shear wall structures .The proposed empirical formula can serve as a reference for revision of the seismic design code, frame-shear wall structure seismic design and related studies.
Function Method Based on Multi-Faceted Three-Dimensional Digital Model of the Slope and Applied Research
Authors: Li Yong Bing , Wu Shun Chuan , Li Bing Lei
Published: June 2012

With the geographic information technology in a wide range of applications in geotechnical engineering, in geotechnical engineering, the computer visualization technology has also been rapid development. Accurate three-dimensional mathematical model can make exploration data more realistic. In this paper, the three-dimensional visualization technology of computer combined with mathematical elevation model (DEM), and using multi-faceted function interpolation method to establish the accurately and effectively three-dimensional digital model of the slope. The results show that, the use of multi-faceted function interpolation method can effectively solve the slope of three-dimensional digital modeling interpolation problem.
Study on Impact Resistance of Silica Fume Concrete
Authors: Zhang Chao , Wu Wei , Li Yong
Published: June 2012

It has important practical significance to research dynamic mechanical properties of silica fume concrete with silica fume concrete widely applying in civil engineering. Mechanical properties of silica fume concrete under impact loading were studied with the SHPB test device ofφ74mm to get its optimal design project and provided important bases and references for engineering applications.
A New Element Model of Solid Bodies
Authors: Ke Jiang
Published: June 2012

Based on the generalized Hooke's law and the superposition principle, a new element model of linearly elastic and orthotropic solid bodies is presented. Furthermore, the paper provides a new method for analyzing solid bodies. This new element is a simple truss, and a solid body is considered to consist of many such truss elements, then the solid body becomes a truss structure. Thus the internal forces and displacements of the solid body can be obtained by calculating this truss structure.
Applying Clustering Algorithms to Explore the Circumstances of Fatal Falls in Construction Industry
Authors: Cheng Ying Mei , Su Jie Ying , Cheng Ching Wu
Published: June 2012

This research adopted constrained k-prototypes algorithm to analyze the database that contains 294 cases of fatal falls between the years 2003 and 2010 within the Taiwanese construction industry. The objective of this study is to explore the circumstances of the fatal falls. The results of the analysis indicate that the primary circumstances under which the accidents occurred include the professional category of other specialized construction businesses; hazardous mediums such as scaffolding, support frame, stairs, stairways, and the openings, etc.; the time period between 9:00 am and 11:00 am; the falling height between 0 and 10meters. Meanwhile, not adopting safe construction methods is a major indirect factor that contributes to the accidents. The fundamental factors contributing to the accidents include not clearly informing the subcontractors of the conditions of the work environment, risk factors, labor health and safety regulations as well as the necessary measures to ensure the health and safety prior to the project commences.
The Time Sequence of Space Dynamic Development Analysis Based on the Possibility of Construction Behavior Evaluation
Authors: Zhang Xiao Rong , Duan De Gang , Tian Tao
Published: June 2012

The time sequence of space dynamic development is one of focus problems in current planning, but little technology method research has been done. This paper puts forward the exploratory concept of the possibility of construction behavior, and tries to establish preliminary method of the possibility of construction behavior evaluation by factor analysis method, and conducts a set of methods system guiding the time sequence of space dynamic development.
A Redundancy Design Schema of Distributed Real-Time Database Applied in ISCS
Authors: Du Jun Wei , Chen Wei Qiang , Zhu Zhong , Liu Xin , Wan Si Jun , Liao Chang Bin
Published: June 2012

Reliability is one of the most important properties of integrated supervisory and control system (ISCS) in metro. Redundancy technology, a fault tolerant mechanism, can significantly improve ISCS reliability. This paper introduces a redundancy design schema and its implementation in distributed real-time database, which is the kernel part of ISCS, Including upstream and downstream data redundancy processing technology, fault detection and redundancy switch technology. The result shows that this schema is feasible and reasonable.
Integral Space Concrete Roof Economy and Benefits Research
Authors: Zhao Ke Chao , Li Fuen , Xu Ji Xiang
Published: June 2012

Integral space concrete roof is an excellent roof structure, the application scope is wide. The characteristics of the structure and the construction methods get all through the experiment and the actual test, which shows the roof is superior to the traditional form. In order to validate the construction cost and how the social benefits, further researches is needed. Based on the traditional arch board roof for reference, it is researched of the construction cost, the directly benefit, the comprehensive character etc. And as a cold storage the basis, the social benefit is calculated. The results showed that the roof direct construction cost than traditional roof save about 20% ~ 45%, the social efficiency huge, for the popularization and application of the roof provides a strong basis.
Analysis on Metal Plate Connection Property of Larch Dimension Lumber
Authors: Zhao Rong Jun , Zhang Jun Zhen , Zhou Hai Bin , Fei Ben Hua
Published: June 2012

In this study, Larix gemilinii and metal plate were selected as the main materials. According to GB5005-2003, the connection properties of tension-splice joint and larch wood were investigated. The results showed that the elastic modulus of Larix gemilinii was not affected by the performance parameters of tension-splice joint greatly and three kinds of failure modes were introduced. Besides the design value for the ultimate bearing capacity of Larix gemilinii and the design value for the ultimate tensile bearing capacity of the metal plates were determined. A conservative calculation method for ductility ratio of metal plates was proposed. The ductility ratio of the metal plate connected joint changed with the construction modes, and the ductility ratio for metal plate parallel to the grain (more than 2.4) was obviously bigger than that of perpendicular to the grain, which complies with the requirements for ductility ratio in anti-seismic structure.
The Technical Support of the Rule of Law of Planning
Authors: Xu Jian Feng , Li Bing
Published: June 2012

The planning theorem, concept and the related methodology in different era directly influenced the consequence of the city planning at that moment. They are the technical supports to realize the law of city planning. The sound interaction of city planning and city development is always one people are pursuing for. Whereas the city planning is the prerequisite of city development, and it needs corresponding planning theorem and approach to be its technical supports.
A Case Study on Analysis and Solution of the Problem of “Kindergarten Enrollment Difficulty”
Authors: Li Xiao Shuang , Liu Gang , Li Yang
Published: June 2012

Kindergarten education is a significant project which is closely related to the future development of the nation and its people's livelihood. With the development of our economy and the improvement of people’s living standard, the demand for high-quality pre-school education is increasing sharply among parents. Unfortunately, present development of kindergartens in our country is far behind the increasing demand of pre-school education which results in the phenomenon of “kindergarten enrollment difficulty” in numerous cities. In the investigation, it is found that planning and layout of kindergartens, shortcomings of their own development and related policies are the factors that interact with each other thus leading to the problem. To deal with those factors, we put up with a set of theoretical models from the angle of planning in the hope that these models can serve as reference for relieving the problem of “kindergarten enrollment difficulty”.
The Construction of Public Leisure Space of Beijing-Hangzhou Grand Canal Hangzhou Section
Authors: Geng Li Ping
Published: June 2012

Hangzhou is being made the Internatonal Tourism City , and the Oriental Leisure Capital, owing advantages of long history and natual talent to build an exllent waterfront leisure and recreation space. The all-round protection and development is going back into the public vison of Beijing-Hangzhou Grand Canal Hangzhou section with a number of recreation space construction reflecting the canal culture, pleasant and atrrative. This paper put forward a series of construction scheme and management plan for the recreation space based on the research of space development, recreation building, road traffic and other aspects of Beijing-Hangzhou Grand Canal Hangzhou section.
Space Morphology Characteristics and Heritage Countermeasures of Dong Villages in Northern Guangxi
Authors: Shi Xiao Hong , Deng Chun Feng , Huang Yao Zhi
Published: June 2012

Space morphology of Dong villages in northern Guangxi has accumulated a rich history and culture, and there exists a unique style in terms of settlement patterns, spatial structure, geomantic pattern and other aspects. Through the description for space morphology of villages, we will analyze the impact of modern civilization on traditional culture of Dong and its causes, and put forward the concept to promoting cultural heritage of villages through cultural reconstruction, idea renewal, resource management and other measures.
Research on the Development of Urban Space Axis in China
Authors: Yang Hui Wu , Zheng Wen Hui , Sun Ying
Published: June 2012

The development of urban space axis is a historical process. People in different regions, with different cultures have different understanding of urban space axis. However, in the background of world's economic and cultural integration, urban planners, architects, government and builders miss in the issue of how to construct the urban space axis. The destruction of traditional urban axis and the convergence of new urban space axis exist at the same time. Then, where the development of urban space axis will go? It is just the subject to discuss for planners and architects.
Study on the Urban Streets Space Forms from the Perspective of Recycle Culture Concept
Authors: Yu Ying , Lv Fei
Published: June 2012

Facing the gradual disappearance of cultural characteristics in current urban streets space, how to realize the sustainable development of the city culture and how to promote the updating cycle of city culture will help to form a virtuous circle of the urban streets space form. This paper tries to find the rule of city culture cycle through studying the development of urban culture. It attempts to provide relevant cultural strategy and means for the sustainable development of city space through studying how to remain the distinctive urban streets space characteristics.
Graphene Film Growth on Cu Foil via Direct Carbon Atoms Deposition by Using SSMBE
Authors: Liu Zhong Liang , Kang Chao Yang , Fan Le Le , Zou Chong Wen , Xu Peng Shou
Published: June 2012

Graphene film has been successfully grown on Cu foil by directly depositing carbon atoms with a solid source molecular beam epitaxy (SSMBE) system. The structural and electronic properties of the graphene sample are characterized by Raman spectroscopy, near edge X-ray absorption fine structure (NEXAFS) and X-ray photoelectron spectroscopy (XPS). Results indicate that the graphene has the tubostratic stacking structure.
The Road of Complexity, the Road of Rehabilitation — Discussion of Detailed Planning for Protection and Renovation of the Southeast Area in the Ancient City of Liaocheng
Authors: Zhao Liang , Lou Shu Juan
Published: June 2012

The revival of historic districts is a major issue that the urban development is facing, combined with the detailed planning for protection and renovation of the southeast area in the ancient city of Liaocheng, this paper narratives the idea of the revival of historic districts in detail from the cultural connotations, business climate, traditional style, living conditions and implementation strategies and so on, expecting to provide useful ideas on protection, renewal and rehabilitation of the current historic districts.
Analysis on the Approach Route of Overall Planning from the Visual Angle of “Figure-Ground Relation”
Authors: Yuan Yun , Wang Lin Shen , Liu Gang
Published: June 2012

The approach route for formulating overall planning could be analyzed by means of the theory of “Figure-Ground Relation” belonging to iconology. From old Measures to new Measures, the approach routes have been changed to “ground-figure” from “figure-ground”, namely, former “construction” first and “protection” secondary is changed to “protection” first and “construction” secondary, and the planning of “city” primary and “countryside” secondary is changed to overall planning for “city” and “countryside”. Attaching importance to the approach routes for formulating overall planning of “Figure-Ground Relation” makes up the controlled thinking tradition, which is one of two great thinking traditions for city planning, as well as a deficiency of overall planning formulation all the time in our country, so as to promote self-examination on overall planning based on garden city theory standing for modern city planning, accordingly make the measures for formulating overall planning regressed to value harmonious relationship of city and countryside.
Study on Urban Design Methods of Currently Campus Planning
Authors: Su Ping
Published: June 2012

University can be seen as a miniature city, the problem of campus planning in currently development need to be analysis and solve from the perspective of urban design. This paper study the urban design concept in campus planning with two main aspects: humanity place for student and reasonable form for campus. Base on these two concepts, it concludes three methods of campus design, including mix-use structure, human scale layout and public space activity.
Ecological Suitability Evaluation for Urban Plan of Panjin New City, Liaoning Province
Authors: Guo Hai Bo , Zhang Ling Ling
Published: June 2012

The main purposes of ecological suitability evaluation of Panjin New city are evaluating the land use and finding which types of land are suitable for city construction. The authors study the subject by adopting the methods of AHP, expert decision and GIS, and get the final results by three steps: First, the authors select the ecological factors interfered with the urban plan and grant the weights to each factors; second, the authors draw a serial images of single factor by availing the remote sensing data; third, the authors put the different layers together and get the combined evaluating image via ArcGIS software. At last, we can draw conclusions that most land of the planning areas is suitable for urban construction and the planning regions can be divided into three parts according to its ecological suitability.