bluuebunny/crossref_metadata_2025 huggingface dataset:
Advance Effect of Rare Earth Nitrates on Green Process of Phosphating
Authors: Kuang Juch
Published: November 2013

It had validated by experiments why appending rare earth nitrate (REN) into the bath affects notably on development of coating-forming, corrosion resistance as well as on urgency varieties of appearance and component of the coating. The causation rests with the fact that REN not only makes metal surface depolarized and cathodic reactions accelerated, but also acts as crystal nucleus with gel forms on the metal surface to speed up the coating-forming and develop the anti-corrosion capacity of the coating. The optimal level of addition of REN is 30-55 mg·L-1.
Phosphatization Coating-Forming Mechanism Based on Green Phosphating Accelerator Rare Earth Nitrate
Authors: Kuang Juch
Published: November 2013

Experimental results show that the samples gained in bath added Rare earth nitrate (REN), relative to the sample got in bath without REN, improve the anti-corrosion power of the coating because of increasing of covering rate of formless crystal Zn2Fe(PO4)2·4H2O (marked P) crystals and the ratio of P/(P+H) (H is the mark of Zn3(PO4)2 crystal) in the coating, combination of which with components parsing by EDS indicates that the sequence of contribution elements P and Zn to erosion resistance of coatings is P>Zn. And the correlative mechanism was discussed, which has it clear that RE is materially a catalyst holding excellent ability of carrying oxygen and cathode depolarization, its concentration gets so constant in certain range that it is much steadier and more efficient than the usual consumptive oxidants like nitrates. In a word, REN plays the role of surface regulator, accelerant and densification agent, which speeds up the phosphating, and bids it effective to enhance the anti-corrosion power of the coating. The addition of REN, not only promote the phosphating film formation and substantial reduction or exemption of nitrite. So, REN is green phosphating accelerator of live up to one's name.
The Study on Impact Degree between Carbon Emissions and Economic Growth in the Construction Industry of Five Northwestern Provinces
Authors: Zhang Su Xian , Tang Xian Wei
Published: November 2013

With the highly praised development of low-carbon and implementation of western development strategy, the various industries of northwest faced great stress with how to weigh the economic growth and reduce carbon emissions. In this study, based on the data about energy consumption and GDP in the construction industry of five northwestern provinces, and estimates the carbon emissions of construction indirectly. Then combined withDecoupling Theoryanalysis the interacted impact among carbon emissions, energy consumption and economic growth in the construction industry of five northwestern provinces .The results shows that the development of construction industry in provinces is still based on high energy consumption and high carbon emissions, but each impact degree of them are different. Finally, put some suggest improvements to reduce the energy consumption and carbon emissions in the construction industry path of five northwestern provinces.
Incorporation with Body, Media and Architecture
Authors: Chu Chao Chao , Luo Chao
Published: November 2013

Body has been incorporated with architecture because of media technology. Through literature reading, the paper takes some projects of Stelarc, Nox Architects and Marcos Navok as examples and analyzes characteristics and methods of the incorporation with body, media and building. Combination of body and media influenced the traditional comprehension of space perception and stimulated the relationship of body and Architecture. The discussion reveals incorporation with body and media became an important factor in the evolution of architecture.
On Green Interior Design
Authors: Shi Jing Yuan , Wang Yan
Published: November 2013

The core concept of the ecological environment is a benign cycle in line with the design of systems, which needs to overcome the difficulties of a few difficult; green design must be the ultimate development of the industry as a strategic goal, only after a long a historical stage of the efforts to achieve the ultimate indoor green design for human dwelling in the land of poetry to the ideal.
Research on Large Space Residential System
Authors: Pang Ping , Sun Li
Published: November 2013

With the improvement of people's living standard, more and more diversified demands for residential space are put forward. Several structures can meet the requirements and they were studied here in order to solve large-space problem.
The Way of Theme Hotel Characteristic Entrance Space Design
Authors: Li Huan , Jiao Ying Hui
Published: November 2013

The object of the research is the characteristic entrance space of the theme hotel. The papers study on the function of the entrance space which show theme cultural. In the view of architecture design, the researches summarize three methods to design the entrance space. The way of reference，association and extending are useful methods in entrance design. The thesis found the feature of the space design and the way how to organize the space.
Features and Current Damaged Situation of Hui-Style Architecture
Authors: Xiong Xue Yu , Su Zhao Yang
Published: November 2013

As the key element of Huizhou culture, Hui-style architecture is one of the masterpieces of Chinese ancient architectures. The Hui-style architecture was highly praised by architecture masters both at home and abroad because of its phenotypic features, such as black tiles, white wall, and horse-like wall; its decoration features, such as tile carving, wood carving, stone carving; and its living features, such as high house, deep well, large lobby. Since most of the Hui-style architectures were built long time ago, had not been repaired for many years, as well as influenced by different kinds of natural hazards, the Hui-style architectures were decayed, eaten by worms, or damaged by fire to different degree. Most of these architectures could not meet the living requirements nowadays with faint light, high humidity, poor sound insulation, badly cracks and corrosion of all kinds of wood components; and needed to be repaired and reinforced badly. Based on this situation, the author believes that the Hui-style architecture would be in its original appearance in front of the word in the near future if the scientific research and proper reinforcement measures were adopted for the reinforcement of the Hui-style architectures.
Visual Ecological Design of High-Density Urban Residential Area Based on Green Seeing Ratio
Authors: Wu Zheng Wang , Yu Ze
Published: November 2013

The article proposed that the green seeing ratio should be introduced in high density planning and design of residential area in China, pointing out that the green seeing ratio is a clear, effective index of strong operational in visual ecological design. It is necessary and feasible that the green seeing ratio as a evaluation index in the planning and construction of high density urban residential area in China. Advocates to take a combination of centralized and decentralized groups-residential areas and other ways of planning that by reducing the area of road, natural green details, take the tortuous roads and other methods can effectively improve the green seeing ratio. Some guidelines being followed in the building layout, open space design, road shape, plant greening in the detail design can effectively improve the green seeing ratio of high density residential area.
The Analysis of Suzhou Cultural Image Based on the Medium of City Sculpture
Authors: Fan Ru , Huang Yao Zhi
Published: November 2013

By analyzing the status quo of Suzhou city sculpture, we find that its sculpture works is systematically laid out through culture image, then the sculpture works created on this basis makes regional culture resonate with city space; this article has an in-depth discussion about Suzhou cultural image based on the medium of city sculpture from the aspects of Suzhou cultural region, cultural route, cultural node and cultural icon.
General Information Models of Intelligent Building Control Systems: Basic Concepts, Determination and the Reasoning
Authors: Volkov Andrey
Published: November 2013

In the paper the problem of the general information simulation of the building control intelligent systems from the point of view of abstract cybernetics is examined. There are represented some resonings about the state and the prospects for practice and scientific studies in the field of constructing Building Intelligence. There are examined the questions and the resonings, connected with the determination of the key concepts of the construction Building Intelligence: control of object (building), the stability of object (building), the homeostat of object (building).
Analysis on the Effect of Carrying out Village Planning — Case Study of HangMin Village
Authors: Huang Yang Fei
Published: November 2013

Urban and Rural Planning Act" requests all of the village should compile planning. An unprecedented number of village planning have been formulated and come into practice in China. How is the implementation effect? This paper takes HangMin village of Xiaoshan district in Hangzhou as a case, firstly analyzes main problems of the village: Industry scattered is difficult to form scale effect; Distribution of rural settlements is scattered and small scale; The infrastructure of village is aging and not matching; The public service facilities are not perfect. Then the paper analyzes the village planning effect from the following aspects: economic development and industry planning, planning of residential area, infrastructure supporting, the distribution of public service facilities. And then put forward some considerations: Planning content indiscriminately imitated urban planning, and the results are not reasonable; Farmers' participation is not high, and the farmers' willingness is reflected inadequate.
Commodity Residential House Price Volatility Spillover Effects of Study — To Zhengzhou City Circle as an Example
Authors: Lan Feng , Zhang Rui Rui
Published: November 2013

With the overall urban scale and the constant improvement of the level of economic development and regional urban cluster gradually formed, the interactive relationship between urban residential market is increasingly significant.Based on building the VAR model, this paper using Johansen cointegration relationship test, Granger causality test based on VEC model and variance decomposition method of the nine cities of zhengzhou city circle commodity residential house price volatility spillover effect carries on the empirical analysis, the results showed that: each city commodity housing prices keep long-term stable equilibrium relationship between, and has obvious effect, the interaction of zhengzhou and luoyang to other urban commodity residential house price fluctuation has significant guiding role.
Planning a Sustainable House
Authors: Serpa Preto Jean Lucas , Claret dos Santos Valquíria , Rocha Teixeira Riondet Costa Daniela
Published: November 2013

This study aims the planning of a sustainable house. It shall be used to receive visitors, students and professors from UNIFEI (Federal University of Itajuba), as well as academics from other universities. The objective of this house is to provide a contact of the public with sustainable construction processes and also with environmental education. The house shall be designed and built in accordance with current environment legislation and it should use, as much as possible, environmentally friendly construction processes. Furthermore, it should also have the means of been hydraulically and energetically self-sustainable.
Study on Landscape Design of Roof Garden
Authors: Sun Ying , Gao Guang Lin
Published: November 2013

The roof garden is a complex form of roofs landscape. Advanced green roof design played a huge ecological and economic benefits gradually being recognized for the significance of green roofs and classification, this paper study the roof garden design principles and key technologies for preliminary summary and discussion, proposed green roof functioning and performance arts beautiful landscape design methods.
The Developing Process and Features of Chinese Classical Gardens in Ming Dynasty
Authors: Zhao Chen Xin , Liu Wei
Published: November 2013

As a transiting period, the Ming Dynasty gardens showed a creation of its uniqueness. Private gardens in Ming Dynasty mainly focused on small courtyard, it had an unadorned style and they were extremely rich in symbols of leisure landscape; Ming royal gardens development was slightly left behind, but it lead itself to form a special style which was rough and heroic. Through analysis and comparison to the gardens from Ming, Song and Qing Dynasty, it is concluded that the Ming Dynasty gardens is an inheritance and development of Song Dynasty gardens intention, and its characteristics had a plentiful variation of space. To Sum up, the Ming dynasty gardens chose circuitous paths, enhancing the level of landscape and highlighting central spot of landscape as its routine.
Cut Expenditure - Water Saving Green Buildings
Authors: Zhao Jing Bo , Zhang Fang , Dong Li Peng , Xie Tian
Published: November 2013

21st century common theme is sustainable development, efficient green development model for urban construction must shift from the traditional high-consumption model of development, green building is the only way for the implementation of this shift is the world's architectural development the inevitable trend. Cut costs - water-saving green buildings, will promote water conservation and water use practices improved and full implementation, thus promoting the development of green building in China.
Coal Village Relocation Research on the Impact of Agricultural Production — Taking an Example in Shandong Province
Authors: Li Wen Bin , Hu Zhen Qi , Yang Yao Qi , Zhang Ping Ping , Zhang Peng
Published: November 2013

Coal village relocation will bring local agricultural production and farmers living influence. Based on the city which has been moved eight villages, take the form of questionnaire from farming convenience condition, labor and agricultural structure adjustment, social security and other aspects, and analyzed the survey data with regression statistics. Relocate residents willing to continue to engage in agricultural production as the dependent variable, selecting 15 factors as independent variables, using SPSS software to carry on the Logit regression analysis model, finally determine Relevance between the main source of income and the field road built two factors and farmers engaged in agricultural production, the change in the transportation and large mechanical equipment also have great influence to the function.
The Analysis of Barriers of Development of China's Construction Industry BIM
Authors: Zhang Su Xian , Hu Yin Ru
Published: November 2013

BIM is urgently needed by Chinas building industry to meet its opportunities and challenges. However, compared with developed countries, the progress of BIM development in adoption and identify key barriers which strongly impact the BIM adoption so as to propose corresponding measures to remove the key barriers. A survey about barriers impact was carried out among Chinese construction practitioners. By using AHP(Analytic Hierarchy Process),41 barriers of BIM in Building Industry of china were identified. In the last part of the thesis, a roadmap of BIM adoption and application in china was developed based upon the measures and characteristics of barriers of the BIM adoption in China.
Study on Business Integration Strategy for Real Estate Development
Authors: Lin Yi Yong , Wang You Song
Published: November 2013

Based on the features of the real estate industry, a cost model was established for analyze integration strategies. The analysis results show that a real estate enterprise should give a priority to integration of the business activities, of which the costs themselves are not large but which will greatly influence the whole project and other development business activities; and that the integration in a real estate enterprise is influenced by the product optimization degree, the business management capacity, and the degree of market competition. The integration in the real estate industry is influenced by the product optimization degree and the business management capacity, but it has nothing to do with the degree of market competition.
Government Supervision Game for Infrastructure PPP
Authors: Cui Cai Yun , Han Guo Bo , Feng Li
Published: November 2013

The paper analyzed the necessity of PPP governmental supervision game on the basis of existed infrastructure government supervision and analyzed the policy, market and public benefit risk of private sectors, whereupon determined the setup of framework for PPP program government supervision. Supervision will mainly cover the following items: market access; service quality; service price; external supervision; social fairness etc. Lastly, the paper established ethnic risk model of private sector, and came to the following conclusion: degree of ethnic risk is positive correlated with the additional revenue from evil conduct y and market interest rate r, and is negative correlated with the reward from franchised business W, possibility of discovering evil conduct Po, fines derived from punishment of evil conduct D, term of franchised operation t, period of default i and reward declining amount x.
Research and Practice on Graduation Design of Civil Engineering in Application-Oriented Undergraduate Institutes
Authors: Wang Guo Lin
Published: November 2013

Graduation design of civil engineering is not only the most important comprehensive practical teaching stage, but also one of the primary phases for excellent engineers training. Several problems about the graduation design currently exist in application-oriented undergraduate institutes. Per to the spirit of excellent engineer project released by the Ministry of Education, the teaching reform and practice were carried out on the graduation design at the aspects of the topic selection, the teaching content optimization, the establishment of innovation systems, the improvement of teachers practical abilities, the management system and the enhancement of safety concept. Favorable results have been obtained, indicating that the overall quality of the graduation design has been obviously improved. Suggestions have also been given, which can be a reference for the teaching program revision of the graduation design.
Research on the System of Private Scientific and Technological Enterprise's Software Developers’ Survival State Evaluation - Based on Empirical Survey of Five Cities
Authors: Zhao Jian Ming , Hua Jian
Published: November 2013

The system of the private scientific and technological enterprise software developers survival state evaluation is relatively insufficient, with only a few records. For this reason, the paper sets up a dynamic model of private scientific and technological enterprise's software developers survival state evaluation by combining the career cycle with the static model of survival state evaluation, and investigates and evaluates 407 software developers of the private scientific and technological enterprise from five cities. Results show that, the evaluation model is more operational and practicable.
The Visualization Application of Coupled Graphic Data with AutoCAD and MAPGIS
Authors: Li Ming , Zhang Tian Yu
Published: November 2013

Geological disasters practical work requires accurate extracted data and convenient cartography. This paper couples the essential features of AutoCAD and MAPGIS. The multi-analysis is supposed to pay attention to both graphic data characteristics and the graphic data switching process. This process and method elaborates and transforms AutoCAD DXF and DWG graphic data and the MAPGIS MPJ graphic data, in order to enable the existing geography information resource obtain the full usage of graphic data coupling.
6to4 Tunnel Drive Research and Realization on High-End Routers
Authors: Jiang Jian Feng , Liu Zheng , Gu Rui
Published: November 2013

In this paper we designed a set of driving process in order to achieve the IPv6 network connectivity between the isolated IPv6 islands which can instruct tunnel packet to forward on the chips. First, it introduces 6to4 tunnel, system structure and the process of chip forwarding. Then it introduces how the drvier respond to the platform and write the correct message on the chip after processing. Experimental results show that the driving process can instruct 6to4 tunnel packet to forward on the NP chip very well. The result is good and has strong practicability.
Research on Residual Stress for Hull Plate in Cold Forming
Authors: Yan Ren Jun , Lin Yue , Xin Chen , Hu Yong
Published: November 2013

Based on the mechanical analysis of the plate formed under pure bending, we developed the theoretical model of residual stress distribution pattern under single curvature cold-forming. The numerical method is used to simulate the forming procedure of The 3-d surface ship CNC bending machine, which help us acquire the stress and strain distribution of cold formed component and the relationship between steel plate thickness and its peak value of residual stress. The results show that the simulation model makes accurate prediction of the residual stress. The peak value of residual stress increases with the increase of plate thickness, and it decreases with the increase of bend radius.
Structural Reliability Analysis Using Fourier Orthogonal Neural Network Method
Authors: Sha Li Rong , Yang Yue
Published: November 2013

In order to predict the failure probability of a complicated structure, the structural responses usually need to be predicted by a numerical procedure, such as FEM method. The response surface method could be used to reduce the computational effort required for reliability analysis. However the conventional response surface method is still time consuming when the number of random variables is large. In this paper, a Fourier orthogonal neural network (FONN)-based response surface method is proposed. In this method, the relationship between the random variables and structural responses is established using FONN models. Then the FONN model is connected to the first order and second moment method (FORM) to predict the failure probability. Numerical example result shows that the proposed approach is efficient and accurate, and is applicable to structural reliability analysis.
Transmission Tower Collapse Analysis with Wind Load Based on LS-DYNA
Authors: Wang Liang , Qu Wei Lian , Li Yan Fei , Wang Yi Fei
Published: November 2013

Large span transmission tower is the lifeline of electricity transmission，Its collapse destroyed will causes adverse to the social and economic effects，The mechanism of the power transmission tower collapsed caused people's attention.The analysis is based on LS-DYNA program，explicit beam161 beam element is adopted to establish the finite element model for transmission towers，Analyses the collapse process of transmission tower and its failure mode with downburst load.
Study on the Influence of Concrete Strength on the Dynamic Performance of Prestressed Steel-Concrete Composite Beams
Authors: Xu Wei , Wu Jian Ming , Xiao Rui Ya , Xu Wei
Published: November 2013

Through the finite element analysis, studies on mechanical performance of prestressed steel-concrete composite beams when it is undered the low reversed cyclic loading, based on constitutive model of elastic-plastic and consider nonlinear property of materials, it indicated good agreement with the experiment. Change concrete strength of composite beams and study hysteresis curve, energy dissipation and so on.Study found that with the improvement of concrete strength, the hysteresis loop of prestressed steel-concrete composite beams become plump, down by the load carrying capacity, energy dissipation ability were improved significantly.when the load upward, the load bearing capacity,energy dissipation have a small rise, but not obvious. Incresae the concrete strength is good for dynamic performance of prestressed steel-concrete composite on the whole.
Effect of Steel Stairs to the Overall Performance of Frame Structure
Authors: Yan Xin , Wang Jun Ping , Chen Xin
Published: November 2013

In order to clear the relationship between the steel stairs and calculation results, finite-element software was used to make an analysis about the influence of traditional steel stairs and sliding bearing steel stairs to the overall performance of frame structure, including the analysis of influence of eccentric structure under earthquake, and the interlayer displacement rate.
Flexural and Plastic Hinge Behaviour of GFRP Confined FRC Beams
Authors: Palanivel S. , Sekar M.
Published: November 2013

In this investigation, it was planned to study the flexural and plastic hinge behaviour of reinforced concrete beams confined with GFRP wraps and polyolefin fiber addition in critical regions (plastic hinge zone) along with stirrup confinement. The variables are the number of layers and chopped/woven type of wrapping, which controls the behaviour of the GFRP, and the percentage of polyolefin addition. The programme consisted of casting and testing 20 rectangular reinforced concrete beams of the size of 150 mm × 230 mm × 2000 mm, under a symmetrical two point loading. During the casting of the beams, the middle one third 600mm of the beams were cast with polyolefin fibers concrete, of volume fractions 0.3%, 0.5%,0.7%,0.9% and 1.2%. After the curing of the beams, glass fiber mats along with polyester resin were wrapped over the beams in the plastic hinge zone (critical zone) for 600 mm length; i.e., 300 mm from the centre on each side. Polyolefin fiber addition to the lateral tie and GFRP confined beams has the advantage over the confinement by the lateral ties and FRP wrap in improving the performance under large deformations.
Normalized Stress-Strain Behavior of Yingkou Clay
Authors: Yi Fu , Wang Hong Yu
Published: November 2013

In order to systemic study the normalized stress-strain relationship behavior of Yingkou clay. By the consolidated undrained triaxial sherar test of Yingkou clay, obtaining that stress-strain relationship is strain hardening under different confining pressures.A kind of cementation structure in the soil directly affects soft soil strength.And the paper contrast four kinds of normalized factors to study stress-strain characteristics,which are confining pressurethe average consolidation pressureand the ultimate value of principal stress.The results indicate that the normalized degree is more accurate when used value of principal stress and as normalized factor. Meanwhile the normalized stress-strain relationship of Yingkou clay under consolidated undrained condition is established,which can well predict the stress-strain relationship under different confining pressure.
Applied Research of the Transfer Matrix Method in the Calculation of Sheet Pile Wharf Structure
Authors: Wu Fei , Jiang Chao Hua , Zhang Shen , Liao Ying Di , Ouyang Feng
Published: November 2013

This paper, based on the calculation model of vertical elastic grade beam, puts forward transfer Matrix method model for calculation of sheet pile. Through setting virtual elastic support and calculating elasticity coefficient, sheet pile structure is applied to transfer Matrix method. According to the boundary conditions of sheet pile, establishing formulas to solve the initial vector , and getting the sheet pile arbitrary state vector . Using this method for a underground continuous wall structure to calculate, The results with the finite element method results come very close.
Strategy for Determining Analysis Working Conditions of Hydraulic Excavator
Authors: Qiu Qing Ying , Wei Zhen Kai , Li Bing , Gao Yu , Feng Pei En , Wu Jian , Wang Xiao Qing
Published: November 2013

It was incomplete and may have missed some dangerous working conditions to select several typical working conditions only in traditional strength analysis of hydraulic excavator. Therefore, the paper proposes a strategy that takes the working conditions when the load at each hinge of working device reaches largest into account. The working device of a 21t hydraulic excavator was analyzed with finite element analysis method when comparing these working conditions with the traditional typical ones. The results come out that the largest stress of boom, arm and bucket under these conditions increased respectively by 4.6%, 5.6% and 19.1% compared with the traditional most dangerous conditions. Consequently, in addition to the traditional typical conditions, it will be more safe and reliable to analyze the strength with the largest hinge loads conditions.
Experimental Research of Lightweight Composite Wall on Lateral and Vertical Loads
Authors: Guo Yi Qing , Cao Ping Zhou
Published: November 2013

To overcome the shortcomings of assembly lightweight steel structure residential system in our country. A new type of lightweight energy-saving composite wall is proposed, which is composed by light-gauge shaped steel and thin panel. In order to investigate the load-bearing behaviour and failure mode of the composite wall, 4 wall specimens in full ratio were designed and manufactured. The experiment study is carried out under lateral and vertical loads. The results show that the self-drilling screw integrate the light-gauge shaped steel and thin panel to bear loads. The decrease of self-drilling screw spacing can effectively enhance the load-bearing capacity of the composite wall, and the best choice of the self-drilling screw pitch is 150mm. The composite wall has good bearing and deformation capacity, and it is suitable for applying to light weight steel residential system in our country.
Nonlinear Analysis of Steel Frames Using Element with Trilinear Model
Authors: Hu Shu Jun , Wang Zhan , Pan Jian Rong
Published: November 2013

Considering the elastic-plastic stage of steel constitutive relationship, the assumption that element is elastic perfectly-plastic is no longer valid. The yield function that considers the effect of trilinear model is derived by using section assemblage concept. Element with two subsprings at each end is presented to consider the effect of section stiffness and yielding. Based on the proposed yield function and element, an efficient nonlinear analysis method for steel frame with trilinear model is proposed. The proposed element has the same nodal degrees of freedom as conventional beam-column element by condensing the non-nodal degrees of freedom. Other factors influence the capacity of steel frames, such as shear deformation, residual stress, geometric and material nonlinearity are explicated. The efficiency and accuracy of the proposed approach are demonstrated through the numerical example.
Flexural Behavior of Hybrid Double-Skin-Tubular Beams
Authors: Idris Yunita , Ozbakkaloglu Togay
Published: November 2013

This paper reports on part of an ongoing experimental program at The University of Adelaide on the flexural behavior of FRP-high-strength concrete (HSC)-steel double-skin tubular beams (DSTBs). The results from three circular DSTBs that were tested as simply supported beams in a four-point bending setup under monotonic loading are presented. The experimental study investigated the influences of the inner steel tube diameter and the use of mechanical connectors on the steel tube on the flexural behavior of DSTBs. The results indicate that DSTBs are capable of developing very high inelastic flexural deformations. However, the results also indicate that slip between the concrete and the steel tube of the DSTB can be relatively large, unless the bond between concrete and steel tube is enhanced through the use of mechanical connectors. It was also observed that the flexural behavior of DSTBs is influenced significantly by the diameter and thickness of the inner steel tube.
Finite Element Analysis of Beam-Column Connection with Cantilever Beam Splicing
Authors: Pan Jian Rong , Wang Zhan , Zheng Lin Qiang , Yang Zheng Ting
Published: November 2013

Beam-column connection with cantilever beam bolted-splicing is also known as the joint of column-tree moment-resisting frame. The study is still relatively small for the semi-rigid behavior and rotational stiffness of the joint. This paper deal with four specimens of the joints with cantilever beam splicing and four specimens of the welded joints by using three dimensional finite element model analysis. The strain, stress, yield and ultimate loads, yield and ultimate deformations had been compared between the joint with cantilever beam splicing and the welded joint. The analysis results show that, when the splicing area of the joint with cantilever beam splicing was designed more strongly, the stress distribution, the load-displacement curves in elastic working stage, and the initial rotational stiffness are good agreement between the joint with cantilever beam splicing and the welded joint. The hysteresis curves of the joint with cantilever beam splicing were inverse S-shaped, indicating that there was greater slipping deformation because of bolt splicing. The welded joint had no slipping phenomenon.
Analysis for Floor Slabs of Wall-Slab System
Authors: Zhang Li Ying , Yang Xiao Dong , Pan Wen
Published: November 2013

The structure of Wall-slab is composed of slab and shear wall, and only in the outer wall part are the shear wall connected by a coupling beam. The floor and shear wall can bear vertical force and horizontal lateral force together. While under the situation of irregular bearing form shear wall and irregular partition loads, tablet computing becomes an urgent problem. Aiming at this problem, the model which is one layer of floor of Wall system has been used for analysis through the Safe software. In the condition of different thickness of slabs, exploratory results can get about the slab deformations, stresses and reinforcement ratios. The paragraph provides the basis to determine the optimal thickness of plate.
Optimization Research on Wall Thickness of a Double-Wall Steel Insulation Silo with Multiple Bolted Joints
Authors: Tang Gan , Pan Chao Hui , Yin Ling Feng , Li Yong
Published: November 2013

This paper introduces a new double-wall fabricated steel insulation silo with multiple bolted joints. The software ANSYS is utilized to model a 1000-ton double-wall fabricated steel insulation silo with multiple bolted joints and calculate its stress and displacement. The silo is optimized by adjusting the wall thickness of the silo. The model which uses the original thickness is defined as Model 1. The optimized model is defined as Model 2. The stress and deformation of these two models were comparatively analyzed. The results show that the maximum stress and the maximum displacement of Model 2 are both smaller than the specified values. Furthermore,it saves about 40.7% with the steel quantity compared with Model 1.
Research on the Performance of the Cement Stabilized Gravel with Rubber Particles
Authors: Yang Ruo Chong , Li Kai , Zhu Ji Peng , Ya Shu Kai , Zheng Dong
Published: November 2013

The primary objective of this paper was to study the mechanical properties and durability of the cement stabilized gravel which added rubber particles by using macroscopic and microscopic test. Through tests of compression, splitting and frost resistance, relationships between mechanical properties of samples and rubber particles content were studied. Scanning electron microscope (SEM) was applied to analyze the micro-morphology and elemental composition of samples, X-ray diffraction (XRD) was engaged to identify the product phases. The tests results showed that compressive strength of mixtures decreased with the rubber particles content increasing and the early strength effect was obvious, splitting strength decreased slightly. It also indicated that the addition of rubber particles can improve the frost resistance of the mixtures. As a result, the frozen stability coefficient (K) of samples was improved from 0.89 to 0.97. XRD and SEM analyses showed that calcium silicate hydrate (CSH) was resultant and the interface bonding between sand and CSH was better than rubber particles and CSH, which the latter had interface cracks.
Structure Composition and Mechanical Principle of Assembled Self-Supported Warehouse
Authors: Yin Ling Feng , Tan Long , Tang Gan , Zhang Min , Zheng Zhao Xin
Published: November 2013

This paper describes the structure composition and characteristic of assembled self-supported warehouse. And its mechanical principle is introduced and compared with both the assembled pallet rack and the building structure. The assembled self-supported warehouse combines the two structure systems effect. The longitudinal horizontal load is transferred to foundation by means of roof truss and multi-pan portal rigid frame and the lateral horizontal load is transferred by means of spine bracing system and semi-rigid frame. Load on roof and goods load are transferred separately from roof truss and beams to columns, then these loads are transferred to foundation.
Study on Impact-Resistant Performance of Structural Wall with Different Protective Layers
Authors: Yang Run Lin , Zhao Li , Zhou Juan Hua , Li Yuan
Published: November 2013

Traditional design of structural members is considered less collision effects, so it may be possible to cause damage due to impact loads. In view of this, impact-resistant performance of the concrete wall with different protective layers was analyzed. In the process of the numerical simulation, the observed walls with three different measures including the unprotected, the rigid protective and the flexible protective one were considered separately. Protective effects of the different measures were compared and analyzed by observing the stress, the strain, the velocity and acceleration of the target wall. Numerical results show that the flexible protective system works better. The flexible protective layer of the wall may have a significant impact on the protective effect such as suppression of the peak impact response.
Finite Element Analysis on Lateral Deformation of Foundation Pit Influenced by Prestress of Fish-Bellied Beam Support
Authors: Feng Tu Gen , Tong Tao , Cao Ya Jun , Xiong Zhong Hua
Published: November 2013

The problem of loss of prestress and compensation of prestress of Fish-Bellied Beam Support exist in foundation pit construction but seldom be considered in design. Finite Element Analysis on an existed foundation pit engineering of prestressed Fish-Bellied Beam Support by using finite element software ABAQUS. Discussed the influence on lateral deformation of foundation pit caused by loss of prestress and compensation of prestress.The results show that the influence on lateral deformation of foundation pit caused by loss of prestress and compensation of prestress is remarkable, and existing a critical loss percentage, lateral deformation of foundation pit will be well controlled by adjusting compensation of prestress in terms of considering the critical loss percentage.
Safety Distance Analysis about Electricity Transmission Tower Set on the Loess High Slope
Authors: Li Bin , Hu Yun Rui , Zhang Wei Hong , Chen Jing , Zhou Bao
Published: November 2013

The stress, strain and stability of slope would be changed if an Electricity transmission tower built on loess slope. In this paper, the distribution of stress, strain characteristic and stability of loess slope in condition of 30 meters height and 45 °slope triggered by action of Electricity transmission tower should be studied, the result shown that stability of loess slope dominated by the initial stress states, elastic modulus, and Poisson's ratio, strength and shape, structure and load condition etc. the stability distance of transmission line tower be located on loess slope governed by the stability of initial slope and the effect range triggered by tower load, in condition of 30 meters height and 45 °loess slope, the stability distance nearly 20m to 25m.
Numerical Simulation Study on Ground Stress Distribution around Thrust Fault
Authors: Song Lu Sheng , Li Shu Gang , Yan Ting Xu
Published: November 2013

Based on geological conditions of working face 25110 in YiMa coal mine, the ground stress distribution around thrust fault is simulated by using FLAC3D. In the fault profile, the intersection of fault footwall profile and the middle of coal seam tendency dip profile, ground stress distribution are analyzed. Distress is not continuous because of faults. Coal and rock show different stress states under high stress because of different physical and mechanical properties, and the maximum principal stress and the minimum principal stress distribute consistently with the z axis and the x axis. It provide basis on optimal design of outburst prevention of coal seam with impulsion pressure risk.
Finite Element Analysis and Investigation of Double-Row Piles Supporting Structure
Authors: Gu Liang
Published: November 2013

The double-row piles supporting structure is a new type of supporting and protecting for deep foundation excavation. It is widely used to in design of deep foundation pit. Now how to simply and effectively design the structure of double-row piles is in a research and discuss stage. Using the Midas GTS finite element method, the displacement and stress distribution of double-row piles in the different stages of excavation are obtained, and the horizontal displacement and stress distribution of double-row piles in the different stages of excavation are calculated. The results of Midas GTS finite element analysis as follows: (1) after the excavation of foundation pit, the horizontal displacement of pile-top is maximum. The horizontal displacement decreases gradually with depth increases. And the displacement of front row piles is larger than that of back row piles; (2) the maximum shear stress is at the distance 5m to the foundation basement. The higher bending moment at the pile-top and the distance 10m to the foundation basement are consistent with the actual monitoring date. (3) the results of finite element analysis is close to the Richard software and actual monitoring data. It is show that using the finite element analysis to analyze the double-row piles supporting structure with is veritable and credible.
Research on Modeling Technology for Three-Dimension Analysis of Irregular Slope Stability in Surface Mines and its Application
Authors: Liu Wen Sheng , Kong Jing , Liu Bai
Published: November 2013

At present, the most direct and extensive research method which in the field of engineering geology and rock soil mechanics is a numerical analysis method .But the numerical analysis method is developing from two-dimensional to three-dimensional . The slope stability not only has something to do with engineering geological condition , but also with the concave and convex extent of the slope. The text tries to present the three-dimensional effect of the slope by the three-dimensional model, and takes the example of Jilinguole 2 strip mine irregular three-dimensional slope, researching the three-dimensional model method of the irregular slope stability by AUTOCAD and ANSYS, founding the FLAC3D.This paper analyzes the stability of the Jilinguole 2 strip mine south slope by numerical simulation analysis.
Analysis of the Damage Evolution Characteristics of Liaoxi Frost Sandy Soil on Dynamic Load
Authors: Zhang Shu Guang , Chen Pei Pei , Sun Jun Tong
Published: November 2013

To analyze the damage evolution characteristics of Liaoxi frost sand soil on dynamic load , firstly in the foundation of frozen soil damage theory,micro-strength and dynamic modulus are introduced to analyze the damage evolution characteristics of Liaoxi frost sandy soil .Then ,based on the dynamic triaxial test ,respectively analyze the influences made to dynamic modulus by confining pressure and initial water content . Some regular patterns are summarized .The greater the confining pressure, the greater the dynamic modulus of frost sand soil is ,and with the increase of dynamic strain the dynamic modulus under different confining pressure trend to be same .The bigger quantity of initial water content ,the greater the dynamic modulus is and the change rate of frost sand soil`s dynamic modulus with different initial water content are approximately equal .That initial water content has more significant effects on the dynamic modulus is found by the comparison of the effects caused by confining pressure and initial water content .
Analysis and Research the Influence about the Control from the Excavation Way to Deformation of Foundation Pit
Authors: Wang Dong , Feng Chun Lei , Sun Jian Bo
Published: November 2013

Different excavation methods present different influence on the deformation of foundation pit.Combining with engineering example,it analyzes and researches the excavation way of the reserved soil after foundation pit excavation.And through the application of the finite element software MIDAS GTS,it carries on the numerical simulation for the impact of section excavation sequence and different section length on the deformation.Ultimately it determines the optimal excavation sequence and length,and achieves the purpose of control deformation during construction.
Numerical Simulation on the Sinking Process of Open Caisson with Particle Flow Code (PFC)
Authors: Wang Jian , Chai Li Sha , Wu Hao
Published: November 2013

Sidewall pressure is important to open caisson design. However, FEM simulation for the sinking process of open caisson is quite difficult due to extremely large deformation including soil flow and solid boundary movement. In order to overcome this problem, Particle Flow Code (PFC), which is based upon discrete element method (DEM), was applied to simulate the whole sinking process of an open caisson using proposed load servo mechanism, and the variations of the sidewall pressure with sinking depth and elevation were investigated. The outcomes agree well with the in-situ observation data and the indoor experiment data, which verifies the feasibility of modeling the sinking process of open caissons using PFC and further studying their soil-structure interaction mechanisms from the microscopic prospect.
Study on Reinforcement Methods Based on Different Disintegration Mechanism of Red Sandstone Landslides in Changji Highway
Authors: Ma Li , Hu Yi Fu
Published: November 2013

Based on the engineering properties of red sandstone, especially hydraulic mechanical properties, red sandstone slopes are taken as examples. Polarized microscope, powder X-ray diffraction and several general experimental analyses are conducted to get some basic physical indices and microstructure parameters. By summarizing and comparing to other scholars research results, this paper analyzes the disintegration mechanism and failure mechanism of the red sandstone Slope. Several examples of slopes reinforcement projects of Changji highway in Hunan province are taken for the analysis of red sandstone rock properties deeply. Meanwhile, a comprehensive analysis is carried out between three red sandstone slopes instability mechanisms. Finally, some more practical reinforcement methods will be discussed in this article which would do favor to provide scientific basis for disaster prevention and mitigation.
The Researches on the Mechanism of the Concrete under Low Temperature Frost Injury
Authors: Zhang Bin , Su Peng , Dong Li Tao
Published: November 2013

Through the study of the frost injury mechanism and characteristics of concrete, the main factors that affect the frost resistance of concrete are described, and put forward measures to improve the frost resistance of concrete performance.