bluuebunny/crossref_metadata_2025 huggingface dataset:
Prediction Model for Dam Displacement Based on Decoupling Analysis Using Wavelet Packet Energy Spectrum
Authors: Cheng Lin , Zheng Dong Jian , Zou Yong Chao
Published: October 2011

This paper presented an approach of decoupling the system represented by a time series of dam monitoring data into a series of subsystems and modeling these subsystems with non-linear models. The decoupling analysis of original system was achieved using wavelet packet energy spectrum (WPES). The non-linear models used here is augmented mixed regression (AMR) model. Some detail problems such as how to find the scale for fine wavelet packets, the modeling of sub system, how to choose a forecast model and the data de-noising were studied in this paper. Through the analysis on the monitoring data of a roller compacted concrete (RCC) gravity dam, it proved the good performance of this model in data prediction.
Dynamic Elasto-Plastic Analysis on the Steel Spatial Arch Truss with 60m Span and 0.1 Rise-Span Ratio
Authors: Li Hai Wang , Li Kai , Liu Jing
Published: October 2011

In this paper, the elasto-plastic dynamic analysis on the steel spatial arch truss with 60m span and 0.1 rise-span ratio is carried out under earthquake wave with SAP2000. In the analyses, the geometric and material nonlinear effects are considered at the same time based on the plastic-hinge theory. Under the action of EL wave with the peak increasing gradually, its elasto-plastic dynamic responses have been obtained. The results show that its failure mode under the earthquake action is elasto-plastic dynamic buckling; that its critical peak acceleration of EL earthquake wave when applied in horizontally direction is 678gal, and is 624gal when applied in vertically direction; The ratio of its maximal node horizontal and its structural height is 1/961, and its displacement ductility coefficient is 1.14 and the ratio of its bars with plastic hinge appearing when buckling is 2.15% when EL-Centro waves applied on structure in X direction; The ratio of its maximal node vertical and its structural span is 1/660, and its displacement ductility coefficient is 1.17 and the ratio of its bars with plastic hinge appearing when buckling is 6.09% when EL-Centro waves applied in Z direction.
Elastave Bucking of Whole-Corrugate Web H-Beam
Authors: Chen Yong , Zhang Chun Yu
Published: October 2011

Contradiction between thin wall and stability of H-beam is a kind of problem in engineering field, the corrugated web H-beam researched in this paper relieve the contradiction to some extent. This paper apply finite element method of variable section beam and high programming language of MATLAB to analyze buckling strength under axis pressure and effect of critical load of parameter of whole-corrugated web H-beam and contrast to constant cross section H-beam, declaration superiority of whole-corrugated web H-beam with example, supply theory to this kind of H-beam in engineering application.
Study on Ground Motion Parameters of Seismic Appraisal for Existing Structures Based on Residual Service Life
Authors: Zhou Xiao Long , Li Ying Min
Published: October 2011

Research status of ground motion parameters of seismic appraisal for existing structures is analyzed. According to the theory of the probabilistic distribution of seismic intensity which fits Extreme Value Type Ш, the relation of multi-value seismic intensity to seismic basic intensity from different seismic hazard characteristic zone is studied in this paper. Under the principle of all the seismic actions of each fortification level have the same exceeding probability, the basic intensity for seismic assessment of buildings with different residual service lives is given to each zone. At last, after giving full consideration to the seismic hazard differences to different areas, the modification factors of seismic action of buildings at the three zones with different seismic hazard characters are given in this paper. At last, this paper provides a base for the structure designers to choose a rational seismic action during the seismic appraisal for existing structures.
Effect of Initial Geometry Defects and Crane Runway Partiality on Security of Single Layer Steel Structural Workshop
Authors: Zhang Yong Li , Hu Xiao Peng , Zhang Xin
Published: October 2011

External components loss injuries caused by various defects of steel material performance, design, production and construction, and adverse factors such as overloading, repeated load, high-temperature, corrosive media or mismanagement, direct impact on security of steel structure in the course of subsequent use. Based on the investigation of single layer steel structure industry workshop, from two aspects of nature and quantify, the effect of initial geometry defect on bear of axle pressure component and crane runway partiality on bear of crane beam system is analyzed, which is the basis of regularity uses、consolidating and monitors of the building. The result shows that through the computation of axle pressure component with initial geometry defect or crane runway partiality, the component's bearing capacity reduces many and the effect of security is big, and when the initial geometry defect or crane runway partiality surpasses the standard stipulation the certain proportion, bearing capacity will continue to reduce, the structure will be more unsafe. The effect of crane runway partiality on the crane beam web plate upper extreme edge's intensity and web plate horizontal stiffening rib's intensity is little.
Cyclic Behavior of the Steel Plate Reinforce Concrete Shear Walls Built at the Aspect Ratio Is 2
Authors: Wang Wei , Gao Jun Jie , Chen Yun Chao
Published: October 2011

The steel plate reinforced concrete shear wall (abbreviated as SPRCW) is an innovative type of lateral force resisting structural member potentially used in steel-concrete composite structures, especially in high-rise buildings. This paper presents an experimental study on seismic behavior of such kind of shear walls. The test specimens include five SPRCW models and one ordinary specimen RCW-1 built at the aspect ratio is 2. The combination of the following wall parameters is varied: thickness of the steel plate, thickness of the SPRCW, axial compression ratio, and detailing such as lateral ties cross the steel plate. The experimental program is developed to evaluate the damage patterns, hysteretic response, strength, stiffness and ductility behavior of the walls under axial compressive loads and cyclic horizontal forces. In addition, the experimental results are analyzed in comparison with those of anthoer ordinary RC shear walls. The investigation shows that this type of shear wall has the potential to offer strength adequate for resisting forces from earthquake and stiffness appropriate for limiting drift for tall buildings with less size than ordinary RC walls. It is also observed that steel plate encased in the wall plays a major role in bearing loads, while concrete provides lateral restraint for steel plate, and hence increasing global stability and deformation capacity of the wall.
Application of Equal Strength Substitution Method on Concrete Beams Strengthened with Steel Plates
Authors: Zuo Hong Liang , Zhuang Chao , Zhu Lin Lin
Published: October 2011

To research the applicability of equal strength substitution method applied to concrete beams with steel plates, the effects on application range of equal strength substitution method by the initial reinforcement ratio and the strengthened moment design value are discussed．In this paper, the calculation methods of equivalent substitution and Design Code for Strengthening Concrete Structure are adopted to calculate five kinds of single-reinforced rectangular cross-section concrete beams of typical section size by adjusting the initial reinforcement ratio and the strengthened moment design value．The dosage of steel plates is obtained through the comparison of the equal strength substitution and code calculation methods, which is used to obtain the relationship of initial reinforcement ratio, the area ratio of steel plates calculated by the equal strength substitution and code calculation methods and the moment ratio of strengthened and initial ultimate moment． The result shows that equal strength substitution method is not applicable universally, which is feasible only within the scope of certain．
The Construction Measure Control Technology of the Pylon of Sutong Bridge
Authors: Xie Xu Yang
Published: October 2011

In this paper, the operating methods that the total station and the GPS as well as other equipments are employed to carry out the construction measure control have been briefly described, which have well met the needs of tower column, beams, supports and others as well as had the higher lofting precision and the obvious operating efficiency in the process of the pylon’s construction measure of Sutong Bridge. At the same time, they have also provided the technical reference for other similar projects.
Mechanical Performance of Settlement-Reducing Pile Foundation with Cushion
Authors: Zhang Hao , Shi Ming Lei
Published: October 2011

The main objective of adding piles to a raft is sometimes for settlement control. In design, the number of piles for reduce settlements under work load to a tolerable limit is usually small. This often results in a high stress in piles that may impede the application of this foundation due to the limits on raft stress or pile stress in practice. An alternative is to install a cushion between piles and raft. In this paper, the performance of disconnected settlement-reducing piles is studied. Based on some simplifications, a mechanical model of pile penetration into cushion and a calculation method of pile-soil interaction are respectively formulated. In consideration of stress-deformation coordination of pile-soil-cushion, a calculation method of pile-soil stress ratio is presented. Optimization design of disconnected settlement-reducing piles can be performed with this method.
Analysis of Parameters Sensitivity to Mechanical Properties of Large Section Tunnel in Soil
Authors: Liu Sheng , Liu Tong , Liu Bang Zhe , Dong Zi Chao
Published: October 2011

In order to analyze the mechanical properties parameters sensitivity of large section soil tunnel, this paper designs numerical test program of the degree of influence on mechanical properties by the change of physical and mechanical quantities based on the orthogonal experiment design. Depending on two-dimensional elastic-plastic finite element method, in this paper, multiple loading conditions numerical simulation has been carried out to level V wall rock large section tunnel in soil through double side drift construction method, and according to the numerical simulation results, the sensitivity extent wall rock parameters to the tunnel mechanical properties and stability, which may provide a basis for large section tunnel design calculation and construction.
Model Test Study on the Effect of Horizontal Load on the Vertical Bearing Capacity of Disk Pile
Authors: Lu Cheng Yuan , Li Jin Jin , Meng Fan Li
Published: October 2011

A group of model tests were designed to study the effect of horizontal load on the vertical bearing capacity of disk pile. Three double-disk piles were used in the test, and the distance of the two disks is 5 times as the disk diameter. Drew a horizontal load H=100N/200N/300N on the top of pile1/2/3 respectively, and put on the vertical load stage by stage, then studied the differences of three piles’ bearing properties such as changes of the pile bending moment, the horizontal and vertical deformation on the top, and soil pressure around the pile. Experiment showed that when the horizontal load is quite small, the existence of horizontal load has little to do with vertical bearing capacity. When the load reached a certain level, the p-∆ effect under the vertical load will significantly affect the vertical bearing capacity of the pile. Especially during the initial time while there is a large horizontal displacement or rotation generated by the horizontal load, the pile’s bearing capacity is controlled by the horizontal displacement.
The Finite Element Model Determination in the Loess Regions under Subway Vibration Loads
Authors: Meng Zhao Bo , Cui Shi Cai , Zhao Teng Fei , Jin Liu Qin
Published: October 2011

According to measured shear wave velocity of Xi’an Bell Tower area (Loess Area), the dynamic parameters of site soil are determined by using the relationship between shear wave velocity and compression wave velocity. Using Matlab program, the finite element size for low frequency subway vibration is obtained by analyzing soil dispersion phenomenon. On this basis, two-dimensional model with viscous - elastic boundaries is established by using the ANSYS program. The load-time history of the train is applied to the right tunnel, and the effects of the depth and breadth of the different models on the ground vibration velocity are discussed. Finally, the dimensions and element sizes of finite element model are obtained for the Xi'an No. 2 Metro Line with 15m depth in the loess regions.
Experimental Study on Reasonable Distance of Tunnels with Small Spacing
Authors: Wen Xian Min , Yang Jian Hui , Zhu Han Hua
Published: October 2011

An experimental methods was used to study the reasonable distance of tunnels with small spacing, four tunnels were located in a model, the distances between them were 0.5D, 1.0D and 1.5D respectively. The results show that the stress is concentrated in the folder of rock due to the superimposed stress fields, intensive vertical cracks emerged in the folder rock, then folder rock buckled, finally, the crown area of the tunnel sank. The thickness of the folder rock is the crucial factor for the stability of the tunnel, when the thickness is less than 0.5D, the folder rock failed first, when the thickness is as much as the span of the tunnel, the individual dilapidated area in the folder rock will not intersected with each other, the middle area of the folder rock is still in a stable state, as a result, the folder rock can maintain in a stable state.
The Applicable Span-Height Ratio of Steel Reinforced Concrete Cross Beam Based on Deflection Control
Authors: Zhang Jing Shu , Wang Hai Cui , Wu Sheng Zhi , Mo Yong , Huo Hong , Wang Da Jun
Published: October 2011

Steel reinforced concrete (SRC) cross beam has high stiffness and seismic resistance capability, but it is difficult to determine a reasonable beam span-height ratio in engineering applications because there is no general theory in this area. In this paper, we developed a numerical model for SRC cross beam deflection simulation, in which the effect of cast-in-situ concrete floor on the beam has been taken into consideration as an effective flange of the beam. We also investigated the effect of the beam cambering limits in construction on beam deflection under different span-height ratios. The numerical results shows that seismic action and wind load have little effect on the span-height ratio, while beam cambering in construction is very favorable to decrease beam deflection. In addition, steel stiffness has great influence on the deflection of cross beam, and elastic deflection is only one fourth of the actual deflection. Therefore, the reasonable span-height ratio of SRC cross beam should be 20 to 30.
Three-Dimension Rheological Model and Parameters Solving for Unsaturated Soil
Authors: Tian Guan Feng
Published: October 2011

Based on the three-dimension rheological model for unsaturated soil the constitutive equations are deduced by Laplace transformation. Then the time-dependent analytic expressions of vertical strain and lateral total stress in confined compression situation are also obtained. The modified confined rheological test has been carried out to get time-varying data of vertical strain and lateral total stress. Thus all the model parameters in the constitutive model can be calculated by the methods of curve fitting and formula inversion. At last, the method of the parameters solving is proved reasonable by an example.
Comparative Analysis of Schemes for Metro Station Built by Enlarging Large-Diameter Shield Tunnel
Authors: Yan Mei , Yang Xiu Ren , Li Ai Min , Wang Wen Jun , Ding De Yun
Published: October 2011

With the speedy development of Beijing mass transit, the land for metro engineering construction is becoming more and more insufficient; moreover, more and more complicated building environment problems are coming forth in future. In a complex building environment, how to choose available construction method to fast, safely and economically build metro engineering is worthy to be urgently studied in Beijing mass transit. Taking the experiment project of Beijing metro line No.14 as an engineering background, a new construction method that a running tunnel is firstly built by large-size shield method and then a metro station is constructed by shallow mining method to enlarge existing large-diameter shield tunnel is presented in this paper. Based on the building conditions of the experiment project, three architectural design schemes for the metro station and two kinds of construction plans are briefly introduced, and their advantages and disadvantages are analyzed as well. The new construction method can be used as a reference for the design and construction of metro engineering in China in the future.
Analysis of the Design Method of Shield Tunnel Lining Based on the Characteristic Parameters
Authors: Li Li Xin , Geng Xiao Long , Li Man
Published: October 2011

The internal force and deformation of shield tunnel segment lining are influenced by many kinds of characteristic parameters. By the elastic foundation circle method, this paper takes the example of the first phase of the project of the Shenyang metro line 2, analyzing the influence of each characteristic parameter on internal force and deformation of the lining, and summarizing rules for the design of shield tunnel lining.
Influence of Ground Structure on the Seismic Response of Underground Subway Station in Soft Site
Authors: Long Hui , Chen Guo Xing , Zhuang Hai Yang
Published: October 2011

This paper selected representative soft site along the subway lines and created two-dimensional overall finite element analysis model about nonlinear dynamic interaction among soil, underground subway station, and ground structure based on Nanjing underground subway station. It explored the seismic response influence of neighboring high-rise structure on the two-layer and three-span island-type underground subway stations. The results showed that the structure near the subway station had a significant constraint effect on the deformation of subway station which is oriented to the structure, and the influence of deformation of subway station which is backward to the structure is related to vibration characteristics of the soil-underground structure interaction system. The influence of neighboring ground structure on the strain stress response of subway station is useful in most part of important nodes. However, this influence is disadvantageous in the outer part of connections of side walls and plates and middle plate-interior column connections.
Controlled Blasting for Subgrade Near Bridge Abutment
Authors: Yang Xue Xiang
Published: October 2011

The subgrade at the end of a bridge near some important buildings,such as bridge abutment and 500KV transmission line. To meet of the demand of construction period, Different technique of blasting benches were adopted in different district. And meanwhile，safety control was also strengthened in the blasting operation. The blasting successfully made the bridge abutment and the fly-rock under control.
Effects of Underground Structure on Acceleration Response of Site
Authors: Sun Chao , Wang Qing
Published: October 2011

Through numerical simulation，the article analyzes the difference of ground surface acceleration response under the condition of free site and underground structure. The result shows: compared with free site, the underground structure has a greater influence on the peak value of ground surface acceleration and response spectrum. The paper also presents the influencing regularities.
Calculation Method Comparative of Vertical Stresses under Embankment
Authors: Xiao Hong Bing , Jiang Guan Lu
Published: October 2011

In China subgrade engineering practice, for embankment settlements, there were often greatly different between calculated values and the measured values. The discrepancy of actual vertical stresses distribution and calculation vertical stresses distribution under embankment may result the difference. The vertical stresses distribution under some embankments were measured, and which were compared with the vertical stresses calculated by three different methods. The differences and relationships among the four kinds of vertical stresses was analyzed. The applicable conditions of the various calculation methods were put forward.
The Force Impact Analysis of Steel Bridge Deck Pavement Layer Modulus and Pavement Thickness to Pavement System
Authors: Yang San Qiang , Hao Pei Wen , Tang Li Qun , Liu Tao
Published: October 2011

This epoxy asphalt used by the U.S., Japan Epoxy Asphalt two steel bridge deck pavement materials at different thickness analysis of pavement deformation force. Pavement derived the maximum tensile stress, shear stress and elastic modulus, pavement thickness of mathematical models. The results showed that: Pavement maximum tensile stress, shear stress, pavement elastic modulus with available four times a polynomial equation fitted, pavement surface transverse maximum stress increases as the pavement thickness decreases, horizontal maximum shear stress between layers does not increase with the pavement thickness decreases, but the thickness of the pavement at 40-50mm have a peak, then gradually increases with the thickness decreases.
Experimental Study on Shear Strength of Intact Loess at Different Stress Paths
Authors: Su San Qing , Deng Bo Tuan , Hou Jun Feng , Lv Zhen
Published: October 2011

The conventional triaxial compression(CTC), triaxial compression(TC) and reduce triaxial compression(RTC) of ordinary loess in Xi，an Ba He was conducted with GDS stress path tests and the strength behavior and deformation capacity of loess was studied. The experimental results showed that the larger the initial moisture content, the smaller the shear strength. The strength characteristic of loess varied under different stress path. Relationships between σ and ε was strain hardening model. The peak strength of CTC is larger than that of TC and the peak strength of RTC was smaller.
Analysis on the Development Trend of the Longitudinal Cracks During Tunnels Construction Based on the Strength Reduction Theory
Authors: Gao Xin Qiang , Rong Gang , Zhu Yong Quan
Published: October 2011

This article used the elastic-plastic finite element analysis method based on strength reduction theory and researched the regularity of longitudinal formation cracks during the loess tunnel construction. It analyzed the development trend of the crack dips and the distance between the surface crack and the tunnel center by different depth conditions when using the full section method and the bench cut method during the construction. From that it can get the boundary value of tunnel depth that the longitudinal crack can reach the ground. The result shows that: (1) Through the finite element analysis of the continuum structural model, it is feasible and effective to use the method, which is based on the area including the shear stress greater than the cohesive stress, the mutant horizontal displacement, and the change trend of the vertical displacement, to analyze the trend and the scope of longitudinal cracks after the excavation of the loess tunnels. (2) When using the full section method, the longitudinal cracks can reach the ground as long as the buried depth is less than 50m.With the increase of the buried depth, both of the depth of the cracks and the distance between the cracks and the tunnel center are all increased and the crack dips are changeable whose range is 56º~67º. However when the buried depth is more than 50m, the cracks can’t reach the ground and develop from the vault to the ground. The slip tendency near the ground is diminished. With the increase of the buried depth, the dips get larger, but the distance between the cracks and the tunnel center and the crack depth are invariable. (3) When using the-bench-cut method, the development trend of the formation crack is similar to that of the full section method. The cracks can reach the ground when the depth is less than 40m, and the range of the cracks is 56º~62º, or else the cracks can’t reach the ground. (4) From controlling the surface cracks, the bench cut method is superior to the full section method.
Study on Unsaturated Mechanism of Loess Compaction
Authors: Lv Qing Feng , Zhao Jing Wen , Wang Sheng Xin , Zhao Yan Xu
Published: October 2011

The soil-water characteristic curve is an important constitutive feature of unsaturated soils, defining the relationship between the soil suction and moisture content. Mineral component and pore space topology are the most important physical factors affecting the soil-water characteristic, and that dry density synthetically reflects the mineral component and pore space topology. Compaction is a classical application involving unsaturated soil, and dry density represents the pore structure at special moisture content. Soil water characteristic curve for compacted loess is studied by test, and the effect of dry density on soil water characteristic curve is discussed. Based the soil-water characteristic curve and compaction curve, mechanism of compaction is explained. Research results show that the soil-water characteristic curves for all dry density soil intersect at the point, which is optimize moisture content, and suction is the most important factor affecting the compaction.
The Exploration of Regional Characteristics of Architecture Based on Historical Context Inheritance and City Characteristics Shaping
Authors: Li Ze Xin , Zhou Li Li , Luo Xian Zheng
Published: October 2011

This paper discusses the relationship of the regional characteristics of architecture based on historical context and the characteristics of city, summarizes the response to the losing characteristics of regional architecture and the inheritance of the characteristics in the modern conditions, to give help on the protection of the regional characteristics of architecture, the city characteristics and historical context.
Simple Harmonic Excitation Numerical Analysis and Experimental Study of Space Bidirectional Beam String Structure
Authors: Ye Cheng Jie , Gao Zao Liang
Published: October 2011

In this paper,a two-way winding-beam space-harmonic excitation beam string under the action of the dynamic response has been studied to capture the dynamic response of the structure of the law, identify the structure of the weak components,and for the design and construction to provide the necessary theoretical data. Using ANSYS finite element software to numerical analysis and reduced scale quarter ratio of model test research methodology to study,using experimental test results and finite element numerical analysis of mutual authentication.Numerical analysis taking into account the geometric non-linear structure,carried out static analysis,modal analysis,harmonic analysis and transient response time-history analysis. Experimental studies of the dynamic signal acquisition and analysis and processing, through the comparative analysis of data, master of the winding space for a two-way steel beam string dynamic response law obtained structural response of the frequency response range,weak location and distribution of components of type of structural design and construction process were proposed.
Discussion on the Supplying Merchanism of the Supporting Public Facilities of the Urban Edges Residential Area
Authors: Peng Yan , Chen Yi
Published: October 2011

The construction of the new urban fringe residential area is developing very fast during the urban process, but the construction and management of the public products and service in this area are relatively slow. Start with the supply classify, we hope to set up a new, perfect supplying mechanism of the public products and service from the planning, construction, and the management.
Research on Supply and Demand of Xi'an Real Estate Market
Authors: Meng Zhou Ji , Zhou Tao , Gao Shu Hua
Published: October 2011

In the passage, the indicators of supply and demand of real estate market in Xi'an are established, and such indicators are synthesized into a class of synthetic indicators using “principal component analysis”. After the spectral analysis of synthetic indicators, periodic change of supply and demand of real estate through spectral density could be determined. Through the analysis, great randomness existed in supply and demand of real estate in Xi’an. Furthermore, in the medium term, a 3.3 years’ secondary cycle still existed in synthetic indicators of demand, while randomness existed in synthetic indicators of supply. Such findings suggest a declined trend existed in real estate price in medium term of Xi’an.
Study of the Rural Infrastructure Project Evaluation Index System Based on Sustainable Development
Authors: Hu Yun Xiang , Sai Yun Xiu , Li Hui Min , Tian Wei
Published: October 2011

Under field research in Shaanxi province, the rural infrastructure project evaluation index system based on sustainable development is proposed to promote the sustainability of the project during decision and regulate the construction of rural infrastructure. Corresponding to the structure entropy weight method defining the index weight, the system consists of 9 evaluation factors and 46 evaluation indexes from economic, social, environmental and technical is built up, and taking Shannan district and Guanzhong district in Shaanxi province as examples to do empirical analysis. The result exhibits the local development rational, which proves the validity of rural infrastructure project evaluation index system based on sustainable development.
Derivation of Geometrieal Nonlinear Stiffness Matrix for Space Beam Element
Authors: Wang Wei Shuo , Bao Guang Jian
Published: October 2011

A space beam element is derived for geometrically nonlinear analysis based on the principle of minimum potential energy principle. The impact of high-order nonlinear is considered by introducing the axial deformation into the stiffness matrix. The large displacement matrix is divided into four and the initial stress matrix into three submatrix
Public Transportation Dynamic Guidance Model and Algorithm
Authors: Zou Liang , Zhu Ling Xiang
Published: October 2011

The current public transportation guidance models are static and based on travel times, travel distance and travel costs. However latest survey shows that travel time has become the key factor for passenger travel route selection in big cities. Dynamic public transportation guidance model based on travel time and waiting time was proposed and the effectiveness of this model is proved in this paper. To solve this model efficiently, this paper proposed the application of A* algorithm in dealing with this models using straight line distance between two bus stops in electronic maps as Priori knowledge. Finally, the developed model and algorithm were implemented with 50 random OD pairs based on Guangzhou’s public transportation networks (containing 471 public transportation routes and 1040 stops) and Guangzhou’s electronic map. Their computational performance was analyzed experimentally. The result indicates that the models and algorithm proposed in this paper are very efficient. The average computation time of the algorithm proposed in this paper is 0.154s and the average number of nodes selected of this algorithm is 194.2.
Application of Structural Lightweight Aggregate Concrete in the Pearl River Delta
Authors: Zhu Guo Fei , Cui Hong Zhi
Published: October 2011

In this paper, the research on properties of existing main structural lightweight aggregate (LWA) in the China Pearl River Delta as well as the application of corresponding structural lightweight aggregate concrete (LWAC) were introduced. In the application of structural LWAC, this paper emphasizes the design, manufacturing, construction and economic analysis for application of precast LWAC facade of Hong Kong. As the research deepens, structural LWAC has been gradually accepted by construction industry in Pearl River Delta. Experiment research and engineering practice has proved that the mechanical properties and durability of structural LWAC can completely meet the engineering requirements.
On the Application of Design of Urban Public Environmental Facilities in Natural Disasters
Authors: Li Xuan , Wu Bao Na , Chen Qian Yu , Wang Jing , Shen Ying Ying , Liu Chen Jie
Published: October 2011

Recently, natural disasters happen frequently and people are more aware of the importance of building a safe living environment. While giving concern on safety precaution of city architectures, people should also bring the factor of natural disasters into the design of city public facilities since they belong to the design of safety precaution. For example, city public facilities will take effect when disasters happen.
The Analysis of Xi'an Real Estate Investment's Contribution on Regional Economic Development
Authors: Zheng Cheng Hua , Li Wen Jing
Published: October 2011

This paper studies the historical data (1999-2009) of the real estate investment and development in Xi'an City and the relevant data of the national economy of China. The paper uses the production function (C-D function) for the analysis. It uses double logarithmic form of the linear model and statistical analysis software package Eviews3.1 for the quantitative analysis. The purpose of this research is to study the contribution of the real estate investment in Xi'an City to the regional economical development.
The Fault Diagnosis of Tower Crane Based on Genetic Algorithm and BP Neural Network
Authors: Yuan Si Cong , Shang Jing Qiang , Wang Xiao Yu , Li Chao
Published: October 2011

As the most important architectural engineering mechanics in the processing of architectural construction, the progress of construction will be put off by the appearance of the fault of Tower Crane, so it is absolutely crucial to take the monitoring and diagnosis of the condition. BP Neural Network ,which is optimized by Genetic Algorithm, is constructed to have the prediction and identification of the fault of Tower Crane, and it proved that it is effectively and precisely to justify the fault of Tower Crane through using the structure of improving BP Neural Network.
Study on the Evaluation Principle of Xi'an Urban Rail Transit Network from the Perspective of Historic City Conservation
Authors: Chang Hai Qing
Published: October 2011

At present, China has entered a rapid developed stage of urban rail transit. As of the end of 2010, China approved the urban rail transit construction in 28 cities, of which 75% of the city is a state-level historic city. In this article, the author researches the Xi’an cultural resources and the experiences of historic city conservation planning of Xi'an, analyzes the Xi'an urban rail transit planning, and expresses the opinion that the historic city should be attached importance to the heritage impact assessment studies of urban rail transit network. Final the author summaries the evaluation principle of Xi'an urban rail transport planning from the perspective of historic city conservation, and hopes that all these experiences can be used by other historic city.
Changing Traffic Mode and its Impact on Pedestrian Network: Analysis of the Historic Town Tong-Li, China
Authors: Chen Yong , Ni Li Hong , Dai Xiao Ling
Published: October 2011

In the history, water towns in the southeast of China had undergone a traffic mode change from waterborne traffic to road traffic. This research took Tong-li as an example, explored how this change has its effect on various aspects of the town: spatial structure, land-use distribution and the emerged and went down of commercial streets. The method applied here are literature review, historical map analysis, site observation and space syntax. It is found that the changing traffic mode has an far-reaching impact on the pedestrian network of Tong-li.
The Research on the Contemporary City’s History Context Inherited in Speed Time
Authors: Wang Tao , Wang Fu Rong , Zhang Rui , Nie Fei
Published: October 2011

The city’s history context inherited is very important topic in today’s city plan and design. National and local features, following the life of today and fashion design are the needs in the speed time. Combining the examples, the author researched the main strategies about it, which are slow life strategy as the soul, emphasizing to inherit the whole regional space character, emphasizing the openness of the public space and creating the fashion about the city space’s history context.
To Explore Campus Spirit — A Research on the Campus Renewal Design of Chengdu Xindu No. 2 Middle School
Authors: Wang Wei , Dong Liang , Wang Xiao Jun , Hou Pu
Published: October 2011

The campus should be a spiritual place, which is full of cultural significance. Adhered to the search of campus spirit, used for reference of the valuable experience on the school reconstructions after 5.12 Wenchuan earthquake, this paper studies certain main points in the campus renewal design process of Xindu No.2 middle School. Through literature research, questionnaires, surveys, local observe, visit research, the historical evolution and the space form related information have been grasped. The campus problems to be solved by renewal design have been found through the present situation analysis. Based on the overall construction of the campus environment, the school has to renew the integrity design systems, sets up and follows the three design strategies, namely, "spatial distribution reflects the concept of sustainable development", "morphological mutant to continue the traditional & historical context," "detailed designs to highlight the geographical and cultural characteristics", to ensure the creation of the great campus spirit.
On Modern Landscape Design Integrating Chinese Traditional Spiritual Culture
Authors: Liao Qi Peng
Published: October 2011

Chinese concept of landscape design originates from Chinese traditional culture, which is based on the basic framework integrating Confucianism, Taoism and Buddhism and embodied in the design of many classic ancient landscapes. However, spiritual culture is seriously missing in Chinese modern landscape construction, which affects landscape design and shaping. It is urgent to restore spiritual culture in modern landscape design. The development of landscape design shall give more priority to the harmony of human, culture and the nature, and emphasize Chinese spiritual culture in modern landscape design. Only those landscape designs that embody the connotation of Chinese spiritual culture can have real vitality, and only those designs that embody the features of Chinese spiritual culture can actually give people spiritual comfort and a sense of belonging. Giving priority to creating and presenting spiritual culture and images of Chinese landscape and seeking for landscape designs that present Chinese features is the path for innovative development of Chinese landscape design.
Simple Discussion on Creating a Historical and Cultural Concept on City Square Design — Exemplified by Hundred Miles of the Yellow River in Lanzhou
Authors: Ye Ming Hui , Meng Xiang Wu , Zhang Han
Published: October 2011

City square, as a major public urban space. By a sense of spiritual civilization, it should be a window of the city and essential building space to daily life of local residents; it also bears an important heritage city in cultural context responsibility. Based on the Yellow River in Lanzhou City, Barry style line design concept of the study, analyzed and summarized, presented the concept of square designs to create a historical and cultural context of urban culture, the importance of heritage and modern artistic expression should be on urban history and culture diversity to interpretation, to make people re-establish the cultural identity for the city to gain ownership of the spirit.
Integration Method for Information System with Cloud Computing
Authors: Liu Jie , Qin Xian Sheng
Published: October 2011

This work proposes a method of information integration based Cloud Computing. Users can ask for services through application layer, using the open source Hadoop and implementing medical image data storage and analysis. The functional level of this system is on the basis of service. In our experiments, using the MapReduce framework, efficiently implement the DCM format medical data convert to JPEG format picture. We are working on the function to directly read the medical data which is stored in PACS.
Humble Opinion about the Chinese Medicine and Local Architecture Creation
Authors: Wang Shao Rui , Liu Ke Cheng , Li Mei Chen , Yi Han
Published: October 2011

Local architecture is a complex system with historical and dynamic evolution, having formed in the superposed action of regional natural, social environment and the other more factors. The evolution of its development is a dynamic symbiosis process restricted by many factors mentioned above. Facing to the complex phenomenon of regional architecture, local architecture creation is always to be fettered which confining to the architecture body analysis and solving. Thus, it’s hard to break through it in most cases. This paper attempts to merges the traditional Chinese medicine theory into the theoretical study of the local architecture. From the concept of traditional Chinese medicine such as the whole system balance philosophy, harmony between human being and nature idea, this paper analyses and discusses the concept and consciousness of local architecture through the review of the origins of local architectural and characteristics. Then, it also put forward some methods of the local architectural creation by the inspiration of traditional Chinese medicine diagnosis concept.
A Simplified Evaluation of the Influence of the Bond Pattern on the Brickwork Limit Strength
Authors: Bacigalupo Andrea , Cavicchi Andrea , Gambarotta Luigi
Published: October 2011

The influence of the bond pattern on the in-plane limit strength of masonry is analyzed through a simplified procedure based on the application of the safe theorem of limit analysis to the unit cell that generates the whole masonry by periodic repetition. The limit strength domains of running bond, English bond and herringbone bond masonry are obtained with different orientations of the mortar bed joints with respect to the principal directions of the average stress. The effects of different brick geometries are analyzed and comparisons between strength properties of different masonry patterns are made.
Reproduction of Traditional Architectural Form — Design of Engineering Teaching Group as an Example, Yunnan University
Authors: Cao Ying , Yang Jin Peng
Published: October 2011

This paper aims to discuss design methods to reproduce traditional architectures through typology research by engineering teaching group of Yunnan University and points out that the so-called reproduction of traditional architectural form is to present its type and the architectural form created in the design must be a new form based on the corresponding realistic conditions.
Artistic Characteristics of Harbin Middle East Railway Employees’ Apartments
Authors: Zhang Jun , Liu Da Ping , Zhang Yi
Published: October 2011

This article analyzes the artistic characteristics of Harbin Middle East Railway employees’ apartments from the aspects of abundant architectural styles and unique aesthetic perspectives, focusing on illustrating the aesthetic inclination of the residential buildings of the employees of Harbin Middle East Railway from three aspects, namely the harmony of variety and unity, coordination of chic and national traits, and combination of natural and artificial works.
Resource Pattern and Active Adjustment：an Updated Research in the “applicable Technology”of Vernacular Architecture in Arid Area
Authors: Li Yu , Wang Jun , Cui Wen He
Published: October 2011

According to analyzing the basic pattern of construction resources in arid area, this paper summaries a series of coping strategies about the traditional vernacular architecture under the limited construction resources. It points out that regional “applicable technology” plays an important positive role in developing the traditional vernacular architecture, supporting and sustaining the ecological security pattern of rural settlement. The thesis updates the direction of possibly existed earth applicable technology with contemporary applicable technology’s development and the study of cases. It is a positive way to vernacular architecture in arid area for reference in the future.
Study on Earthquake Shelters Planning and Construction in Downtown Area — a Case of Xianyang
Authors: Zhou Chao
Published: October 2011

According to regional seismic activity in Xianyang downtown development and construction trends and needs，use of relevant indicators, to determine the scale of urban shelter-building; The establishment of shelter-level evaluation index system and the use of Layer analysis methods, to cover a radius based on the layout of urban shelter planning; The use of OVD、WVD method, Xianyang downtown with other relevant factors, areas of responsibility of shelter space for the scope and amendments divided; By Wei-Bin Park shelter facilities planning and construction, and explore urban planning and construction of shelter method.
A Preliminary Study on Saving Parking Lot
Authors: Liu Jun , Zhang Wei Xian
Published: October 2011

Along with the development of society and the popularity of private cars, more and more parking lots are to be needed. Consequently, large sized parking lots will be built in many cities. But the traditional parking lots were paved by a large area of concrete. So much concrete will be bound to create heat pollution. Meanwhile, a large area of parking lot occupies mass openspace. The existing parking lots lead to a waste of resources. This paper introduces a new term of saving parking lot and presents some key principles that stem from a wide range of contributions. The newfashioned parking lot may also give rise to the sustainable development.
Analysis on Urban-Rural Integration Planning Practice for Resource-Based Towns in Northern Shaanxi
Authors: Li Fan , Wang Xiao Min
Published: October 2011

This paper starts with the current development of urban-rural integration planning concerning resource-based towns in Northern Shaanxi. Through the analysis on characteristics of towns in Northern Shaanxi, this paper tries to apply the principle and means of urban-rural spatial coordination to effectively integrate the urban and rural space, and achieve the purpose of coordinated development of urban and rural space. It is also hoped by virtue of practical study on the integrated planning of urban and rural towns in Zhidan County, Yan’an City to provide reference for the development of emerging resource-based towns in Northern Shaanxi and its adjacent areas.