bluuebunny/crossref_metadata_2025 huggingface dataset:
Steel Structure Building Market Demand and Applied Talents on Teaching Reform for the Course of Steel Structure
Authors: Chu Yun Peng , Yao Yong , Zhou Li Li
Published: October 2011

Some domestic colleges and universities have been made some effect in the steel structure teaching reforms, but there are some deficiencies in China in the new period. In view of the new era of our steel structures has increased, The design, construction and technical personnel is a serious shortage of steel , and can’t meet the number in current design institute and the construction units. So puts forward the teaching material, the demand in classroom teaching mode, teaching content and graduation design for the reform, the steel structure to provide a reference for personnel training of the new situation.
Mechanical Performance of Bridge Structures under the Random Dense Vehicle Loads
Authors: Hu Bo Xue , Zhang Jian Ren , Yin Xin Feng , Peng Hui
Published: October 2011

Based on the investigation of vehicle loads, the model of the random dense vehicle load was simulated, and three different degree dense vehicle loads were obtained with the simulated model. The calculated results show that the random dense vehicle loads moving on the bridge structures is very dangerous for the security of the structures.
Research and Statistic Analysis on Construction Loads of Multistory Frame R.C Buildings
Authors: Zhao Nan , Hu Chang Ming , Yan Wen
Published: October 2011

In order to control the safety of R.C structure, the construction loads of multistory frame reinforced concrete buildings in xi’an were selected as the research objective. Based on the characteristic of construction loads, the survey on the work site had carried on during the construction progress. Variation of concrete dead weight had been discussed. And the mathematics models of live loads in different stages of construction process for reinforced concrete buildings were proposed through statistic analysis. The standard values of construction live loads were suggested at last.
Study on Seismic Behavior of T-Shaped Concrete-Filled Steel Tube Compound Column under Different Axial Compression Ratios
Authors: Xu Ya Feng , Song Jian , Sun Peng Ju
Published: October 2011

In this paper, the large-scale finite element software ABAQUS is used to study seismic behavior of T-shaped concrete-filled steel tube compound columns with different axial compression ratios. We determine the appropriate type of unit, measure off rational mesh, choose rational algorithm, through this simulation analysis. And we can get the hysteresis curves and skeleton curves of the columns with dies and management. The destruction and the deformation pattern of the whole columns can be seen different axial compression rations. The results show that the difference of axial compression rations has great impact on seismic behavior of T-shaped concrete-filled steel tube compound column.
Research on Industrial Restructuring — Based on Low-Carbon Economy Perspective
Authors: Liu Shu Ru , Li Hai Juan
Published: October 2011

Low-carbon economy has become a hot research field in all walks of life currently. As a way to achieve low-carbon economy, industrial restructuring has been widely studied. In order to promote research in the field, and lead to the development of China's low-carbon economy, this article will give us a summary and a brief review of representative research achievements referring to industrial structure low-carbon adjustment in China's academia. They contain four aspects: intensions of industrial restructuring from the perspective of low-carbon economy, influence of industrial restructuring on carbon emissions, low-carbon industries, and strategies of industrial restructuring from the low-carbon economy aspect.
Optimal Sensor Placement for High-Rise Building via Genetic Algorithms and Improved Information Matrix Criterion
Authors: Zhan Shu Lin , Huang Fang , Lai Jun Ying
Published: October 2011

To improve the accuracy of parameter identification and to reduce the test cost in the high-rise structure health monitoring systems , the paper proposes an optimal placement method combines genetic algorithms with improved information matrix criterion (GA-IIM). With traditional improved effective independent method (EFI-DPR), it is easily trapped into bureau of optimum solution, and the proposed method can resolve this problem. The solutions were coded by a two-dimensional integer array, each line stored a feasible solution and compulsory mutation was adopted to avoid the solution reappeared in the same position. To improve the convergence speed, each generation of optimal group was kept to the next one to participate in the competition. With the improved information matrix criterion embedded in the genetic algorithms, the placement design was produced. This technique was used to optimize the sensor placement of a nineteenth layer frame structure. Comparing the optimized sensor placement of the proposed method with that of improved effective independent method by the modal assurance criterion and the mean square error, the proposed method performs better.
Research of Yan’an Red Base Area Architecture from 30 Years to 40 Years in 20 Century
Authors: He Wen Min , Wang Jun
Published: October 2011

The dissertation analyzed Architecture of Yan’an revolutionary from 30 years to 40 years in 20 Centuries architecturally. Based on the investigation on site and analysis of relative literatures, the paper acquired feature of Yan’an Architecture. The feature played a significant role on protecting the History、Art and Scientific value of Yan’an during the revolutionary period. Yan’an is not only the foothold of Chinese revolution but also the jumping-off place of Chinese revolution. It is also the import historical turning point of Chinese revolution. Yan’an, as a halidom of Chinese revolution, is a famous city because of historical contribution on the Chinese revolution. Lots of revolutionary site is representation of Heroism Spirit and Yan’an Spirit and spirit treasure of Chinese Communist and Chinese people. Centuries-old history and great contribution of Chinese Revolutionary history decided that cultural site of Yan’an must be plentiful and not be replaced. In conclusion, the red base building from 30 years to 40 years in 20 century in Yan'an has significant meaning of its history, culture, development and continuation. The red base building in Yan’an area has also become a major architectural feature and plays an important role nowadays . We should protect them better.
Approach to Amalgamation of Green Spaces and Emergency Shelters — Thinking after Wenchuan Earthquake
Authors: Hu Dong Xiang , Tang Jun
Published: October 2011

This paper discusses the possibility of amalgamation of urban green spaces and emergency shelters, according to their characters of design and construction with the recent earthquake tendency. The approach to amalgamation of them have been suggested, which is suitable for city development of China. Those are the references to research and construction of emergency shelters in urban green spaces in the future.
Study on the City Integrity from the Prospect of Spatial Planning of the Marginal Areas in Harbin
Authors: Xue Bin Xia , Zhao Zhi Qing , Liu Sheng Jun
Published: October 2011

Based on the planning patterns of spatial planning both at home and abroad, this paper has analyzed the importance of maintaining the integrity with the central city and its methods in the spatial planning of marginal areas in Harbin. Additionally to keep the spatial structure of city marginal areas and the integrity with the downtown are also regarded as the basic premise of enhancing vitality and sustainable development ability in the new areas.
Planning Vegetation on Rural-Urban Fringes for the Green Space System of Extended Built-up Area: Strategies and Measures
Authors: Gong Zhao Xian , Deng Yi
Published: October 2011

Urban green space is vital for the livability of a city. It is important how to utilize the vegetation on rural-urban fringes to improve the green space system of an extended built-up area. In this paper, based on the analysis of the features about vegetation on fringes in its types, dynamics, and potentials, it is argued that keeping the vegetation patches be much more indigenous, well distributed and connected, and remain this status during all the transition period should be included in the planning goals at all levels; and all the planning efforts need to be taken through an approach integrated into the planning system according to particular type or level planning could take. Some key planning strategies or measures were developed, which include functioning with the ecological potentials, embedding the ecological assessment through all the planning process, and more detailed in planning.
Application and Analysis of Archetype Coupling in Urban Design — Taking the Special Planning for the Space Layout of Xishui City, Guizhou Province for Example
Authors: Wei Hao Yan , Ding Wei Ting
Published: October 2011

Currently, the feature crises derived from complicated reasons faced by cities in China are very common in the urban planning circle. This paper brings forward a hypothesis: Ignorance of spatial archetype is one of the fundamental factors for loss of urban features in urban design dimensions. Based on that, this paper discusses how to develop spatial features in cities starting from the concept of "archetype" by taking "spatial archetype" as the work object, "archetype coupling" as the operating approach, and Xishui City of Guizhou Province as an implementation case.
The Research of the Tendency of Architectural Morphological Formation of Large-Scale Sports Stadiums in Contemporary China
Authors: Lu Shi Liang , Xing Kai
Published: October 2011

The motivation and new tendency hidden in the representation of the large-scale sports stadiums is thoroughly dug from form representation, structure representation, architectural symbolization and other aspcets through the analyses of the large-scale sports stadiums. Also, the contingency and inevitablity of the tendency is revealed through the discussion of the modern aesthetic trends in order to provide a source of reference to the creation of sports stadiums in contemporary China.
The Application of FBG-Based Overweight Vehicle Recognition for Existing Bridge
Authors: Chen Biao , Li Sheng
Published: October 2011

In order to know the operation condition of bridges when they’re under the action of overweight vehicles, it’s necessary to collect the testing information of bridges under the overloaded condition. Based on the high-speed demodulation instrument, the optical fiber grating (FBG) sensor system can realize the continuous collection for the dynamic strain of structure. According to the analysis of the collected data, auto-sorting and recognition for overweight vehicles can be realized. The introductive system has been applied to the health monitoring system of no.2 Wuhan Bridge over Yangtze River (N2WB). The result showed that not only it’s able to recognize whether or not there was an overweight vehicle passing the bridge, but also it could auto-sort the grade of overweight vehicles, which was an effective overweight vehicle monitoring tool for the existing large span bridges.
Experimental Study on Seismic Behavior of Meshwork Cold-Formed Thin-Wall Steel RC Shear Wall
Authors: Chen Liang , Chen Zhong Fan
Published: October 2011

CTSRC structure is a new composite structural system for residential buildings and it consists of walls and floors which are made of the prefabricated steel skeleton and the infill of concrete. Four pieces of CTSRC shear wall specimens and one piece of RC shear wall specimen are tested under low cyclic lateral loads to study the final failure modes and analyze its structural seismic performance. It shows that the CTSRC shear wall structure possess adequate bearing capacity, fine seismic performance and ductility. CTSRC shear walls are better than RC shear walls in the seismic behavior, and it could replace traditional shear walls structure applying to practical engineering. Inserting ring used for connecting profile steel can transfer stress well and it is recognized as a reasonable construction measure.
Choice of Optimum Scheme for Bridge Strengthening by Using Analytic Hierarchy Process
Authors: Zhang Peng , Weng Guang Yuan
Published: October 2011

Bridge strengthening technology is a new hot spot of bridge engineering now, and choice for a scientific strengthening scheme is an important presupposition to ensure the effectiveness and quality of a project. In order to decide the optimum strengthening scheme reasonably, in this paper, the factors such as the technological feasibility, the effect reliability, the economic reasonability and the work’s convenience which influence the appraisal for bridge strengthening schemes are summarized; based on the basic objective for the optimum scheme, two levels comprehensive appraisal index system of strengthening scheme are established, and the dividing levels are analyzed by using the principles of Analytic Hierarchy Process (AHP); and the judgment matrix and the appraisal matrix are listed, then, the method and process of choice for optimum scheme are set up, and a project example is given to verify their practicality and feasibility.
Use Performance Analysis on the Reinforced Concrete Simply Supported Beam in-Service by CFRP Reinforcing
Authors: Zhou Yong Chao , Li Liang Liang , Sun Tie Jun
Published: October 2011

Based on a secondary load, the formula of calculating the cross-section stress and stiffness of the reinforced concrete simply supported beam by CFRP reinforcing in normal use is derived. Through the comparison and analysis of the load test data before and after the concrete simply supported beam in-service is reinforced, it is showed that CFRP can be coordinated with the concrete in normal use so that the carrying capacity of concrete beam is increased by about 17% to 19%, the stiffness is increased by about 50%, and it is consistent with the formula calculated results.
Experimental Research on the Seismic Behavior of the SRC Short-Pier Shear Wall with Layered Braces Structures
Authors: Lan Wen Wu , Peng Xiu Ning , Huang Xiao Hua , Lei Yu
Published: October 2011

A new type of construction employing shaped steels as boundary elements and layered braces of RC(Reinforced Concrete) short-pier shear wall is put forward. The braces are in X shape and are erected in a multi-storied form. They are embedded in the boundary zone and the web of SRC (Steel Reinforced Concrete) short-pier shear wall respectively to make it possible to improve the bearing capacity and ductility of this shear wall and to improve its seismic performance. Three half-scale specimens of the SRC short-pier shear wall are tested under reversed cyclic loading. High design axial load radio of 0.5 is used. The failure processes and modes of the specimens are observed. The law about bearing capacity and displacement ductility of the specimens influenced by the layered braces structures is revealed. The experimental results show that the displacement ductility is closely related to the amount of stories of braces. The specimens with layered braces structures have better ductility and larger bearing capacity, and therefore the layered braces structures effectively improve the seismic performance of the SRC short-pier shear wall.
Study on the Bearing Mechanism of Squeezed Branch Pile Based on BOTDR
Authors: Piao Chun De , Qu Yong Zhao
Published: October 2011

Based on BOTDR distributed optical fiber sensing technology, this paper studies the variation law of branch pile axial force under the action of pile head loads and the action characteristic of pile side resistance during static load test. The result shows that: the branch of squeezed branch pile, as the major load-carrying object, bears most of the pile head loads and its function gradually emerges with increasing pile head loads. Under the action of pile head loads, the settlement and compression value of branch pile is elevated, which gradually brings about free face between branch and its overlaying soil layer. When the load exceed certain amount, the overlaying soil body of branch cracks under pile-soil interaction, and gradually loses its structural properties, because of which its settlement emerges and negative friction subsequently generated. Thus, during the design of branch pile, one should improve the properties of the soil layer around branch pile, enhance the strength of pile shaft, and lessen pile compressing deformation and settlement, so as to elevate the bearing capacity of branch pile.
Effect of Soil Conditions on the Seismic Response of Spatial Structure
Authors: Xue Su Duo , Luan Xiao Bing , Li Xiong Yan
Published: October 2011

This paper is to study the seismic response of spatial structure incorporating the soil structure interaction (SSI). The SSI model for the long-span spatial structure with supporting substructure is proposed and the relevant soil parameters according to the IBC code are presented. A procedure for calculating the total damping ratios for one DOF system is used in the seismic analysis of spatial structure including SSI. The displacement and the axial force in the member under different soil conditions are compared and some important conclusions are drawn.
Aseismic Test and Finite Element Analysis of Light-Weight Steel Portal Frame with Tapered Members
Authors: Wang Zhen Shan , Su Ming Zhou , Song An Liang , Pang Zhen , Shen Lin
Published: October 2011

To study on the failure model, ductility, energy dissipation capacity, structural displacement, and stiffness of the portal frame structures on the effect of earthquake force, a pseudo-static experiment with a 1/3 scaled model has been completed. Based on the test result, though the ductility and the energy consumption capacity of the structure are poor, the requirement on aseismatic bearing capacity is satisfied, because the structure suffers the smaller seismic force as the deadweight of structure is light. Built up a finite element model according to the test specimen, then performed finite element analysis, the results showed that the finite element model can be used for seismic analysis of the portal frame.
Excavation Deformation Analysis of Deep-Cutting High Rock Slope
Authors: Nie Lin , Zhou De Pei
Published: October 2011

The mainly purpose of the paper is to investigate the slope excavation deformation of the rock slope at the deep-cutting valley under different load conditions. As an example of the rock slope at the intake of the sluice tunnel of Jinping hydropower station, whose slope deformation characteristics was system analyzed by numerical method during different construction conditions. The dead weight, rain, seism and theirs combination were involved in the numerical analysis. The numerical results could give a reference for the excavation stability of the high rock slope, and it is the basis to determine the reasonable construction method and to optimize the design of the strengthening and enhancing engineering.
An Improved Direct Stiffness Calculation Technique for Damage Detection of Bending Structures
Authors: Yang Yang , Liu He , Mosalam Khalid M.
Published: October 2011

In this paper, a practical application for a continues beam-type bridge, the Truckee river bridge, California, to test the validity of the improved DSC method in the identification of the bridge damage after severe loading such as that caused by an earthquake was discussed. Comparing the calculated stiffness from the improved DSC method with that from design data of the bridge based on the numerical simulation with different damage scenarios in consideration of measurement errors, the location and severity of the damage in the bridge can be accurately and reliably detected. The pushover and seismic damage assessment analysis shows that the improved DSC is valid and efficient for damage detection in highway bridges.
Ultrasonic Detection Algorithm Research on the Damage Depth of Concrete after Fire
Authors: Yu Jiang Tao , Liu Yuan , Lu Zhou Dao , Zhao Peng
Published: October 2011

To measure the depth of fire-damaged concrete by ultrasonic method, it was traditionally assumed that the concrete of the fire-damaged structural member could be simply classified into damaged layer and undamaged layer. Based on it, the damage depth can be calculated with a series of single-sided ultrasonic measured data. This method is simple and convenient but less accurate in the practical application. To improve the algorithm, hyperbola curves are adopted to simulate the varying of damage with depth in this paper. And parabolic curves are adopted to simulate the traces of ultrasonic wave in different measured distances. Therefore, the minimum propagation time can be obtained under different damage conditions. Through comparing the calculating results and measured data in different measured distances, the most likely damaged trend can be determined with least square method. At the end of this paper, examples are demonstrated to prove this algorithm feasible and more accurate than the traditional one.
The Role of the New Era of Construction Enterprises of Scale Analysis and its Perfect Reflection
Authors: Wang Li Mei , Yan Xi Kang
Published: October 2011

Quota for the construction of enterprise management an increasingly important role, so their problems through the analysis made clear the principles of its preparation and improvement of measures.
The Experimental Study and Finite Element Analysis on Deflection of RC Two-Way Slabs Reinforced with CFRP
Authors: Li Wen Sheng , Wang Xiao Wei , Deng Xiao Wu
Published: October 2011

The rule of stiffness and deflection change of reinforced concrete two-way slabs strengthened by CFRP was discussed after test research. The results were analyzed with ANSYS finite element software and compared with test results, and the ANSYS finite element analysis results agreed well with test results. It shows that CFRP can improve the flexural stiffness of reinforced concrete two-way slabs and effectively restrain deflection deformation of them. So ANSYS analysis results can provide reference for the test and engineering.
Damage Alarming Method Based on Statistics to a Benchmark Structure
Authors: Song Yan Sheng , Sun Zong Guang , Gu Fan
Published: October 2011

This paper addresses a new damage alarming method of structural health monitoring (SHM) which utilizes statistic method on information in frequency domain. The emphasis in this paper is on the application of this method to the benchmark structure by introduced an abnormal index. The results show this method could indicate the abnormity of corresponding test cases clearly.
Rapid Detection Method of Dr Value of Large Particle Size Filter Materials in Earth Rock-Filling Dam of NuoZhadu
Authors: Li Jian Feng , Zhou Yun Xian , Ning Zhan Jin , Zhu Qi Qin
Published: October 2011

On construction quality detection in high earth rock-filling dam, it is difficulty for testing the relative density Dr Value of large particle size filter materials. In this paper, we have effectively controlled the filling quality of filter material II in Nuozhadu core dam, and at the same time, explored and applied the rapid detection method of Dr Value of filter material II. Then studied the relationship between maximum, minimum dry density of the different grade material in the case of same compacted function and soil gradation parameters, and put forward a method of maximum and minimum dry density associated with particle composition, fitting relation curve between dry density and particle content less than 5mm(S5). By detecting the content of S5, it can be directly reached maximum and minimum dry density, and then calculate the Dr Value.
The Analysis of Building Subsidence Prediction Based on Grey Model Combined with Radial Basis Neural Network
Authors: Bai Yan , Ren Qing Chang , Zeng Fan Kui
Published: October 2011

In this paper, a new prediction model named RBNN-GM(1,1) (Radial Basis Neural Network-Grey Model) model was constructed and used for the analysis of building subsidence prediction for the Palms Together Dagoba in Famen Temple in Shaanxi Province in China. The constructed model can make full use of the advantages of few samples and little information predicting in Grey Theory and swift and self-learning in RBNN. The prediction results show that the combined model is more effective than the common grey model. The proposed combined model for building subsidence prediction may offer scientific rationale for estimating whether the building transmutation exceeds the criterion and provide reference for taking the corresponding safety measures.
The Status and Prospect of Long Span Bridges Detection
Authors: Zhang Bin Bin , Cao Wan Lin , Yu Hong Yue , Wang Hai Cheng
Published: October 2011

This paper introduces the status of long span bridge detection, the current detection system, the specifications and the main evaluation methods; analyzes the present existing problems of bridge test; and puts forward the development direction of large-span bridge test, i.e. seeking new detection system and modifying the original specifications and evaluation methods.
Nonlinear Finite Element Analysis on Seismic Behavior of Concrete Filled Square Steel Tube Planar Frames
Authors: Wang Xian Tie , Ma You Su Fu , Luo Gu Qiu
Published: October 2011

This paper presents a nonlinear numerical analysis on the seismic behavior of concrete filled square steel tube (CFST) columns and steel beam planar frame with through bolt-endplate beam-column connection, by using the finite element analysis modeling with ABAQUS. Parametric studies were conducted to investigate the influence of axial load ratio and beam-to-column linear stiffness ratio on the seismic behavior of composite frames. The analysis results were in good agreement with the experiment results. The analysis results showed that CFST frame with through bolt-endplate beam-column connection had good seismic behavior. The increase of axial load ratio will degrade the horizontal load bearing capacity and increase the energy dissipation capability. The increase of beam-to-column linear stiffness ratio will increase the horizontal load bearing capacity and degrade the energy dissipation capability.
Application of MGM(1,N) on Concrete Temperature Prediction of RCC Dam
Authors: Zhao Yu Qing , Tong Yu Ping
Published: October 2011

The basic modeling principal and method of grey mathematics model is introduced , taking the case of JiangYa RCC gravity dam, on the basis of the interior of dam concrete temperature monitoring data , According to Multi-Variables grey principal, model is founded , change character of concrete temperature is analyzed, and the development tendency of interior concrete temperature is predicted on the basis of the influencing factor-water temperature, air temperature and rock temperature by Multi-Variables grey principal. It is proved that the model founds successfully and it’s goodness-of-fit is very well. calculation base for the temperature stress of dam concrete is provided by founding ,scientific evidence is offered to prevent the temperature crack and ensure the dam safe operation ,the model has some engineering valuable significance.
A Novel FRP-ERBG-Asphalt Concrete Pavement System for Steel Bridge Decks
Authors: Zhang Xi Xiang , Zhang Chao
Published: October 2011

This paper presents a novel FRP-ERBG-asphalt concrete pavement system for steel bridge decks. Based on the preliminary results of theoretical analyses and laboratory tests, this new system offers superior structural performance to conventional asphalt concrete pavement systems. Once trial tested in practice, it may well represent a new generation of reliable and economic pavement system for steel bridge decks.
Nondestructive Test on Typical Roadway Supports of a Mine via Drilling Core and Ground Penetrating Radar
Authors: Han Jian Ping , Liu Hai Peng
Published: October 2011

Temporary or permanent supports are necessary in underground construction for maintaining the stability and limiting the damage of surrounding rock. Due to the uncertainty of geological structure, the specificity of the underground environment as well as other factors, the quality and performance of supporting structure are often difficult to satisfy the design requirements, which not only seriously affects the normal construction and operation of mines but also has the potential threat to the safety of underground production. In order to investigate the influence of the unfavorable geologic environment on supporting concrete and evaluate the real performance of roadway supports of a mine, 17 typical projects were chosen and the strength of supporting concrete was detected by nondestructive drilling core method. The result shows that the strength is widely less than the design value. Furthermore, 4 projects of them were investigated by the ground penetrating radar (GPR) in order to evaluate the feasibility of GPR in the performance investigation of the roadway supports of a mine. The results indicate that ground penetrating radar is capable of measuring the thickness of the support, the distribution of rebars and the defects of the surrounding rock.
Modal Analysis of Brick Walls Reinforced with Concrete Wall
Authors: Zhou Ming Ru , Wang Qiang , Li Jun Pu , Guo Shi Gang
Published: October 2011

Based on finite-element analysis and some other theoretical analysis methods, the modal analysis of one pin masonry wall reinforced with the concrete wall have been researched with comparison, the results of two methods are well matched. The results showed that the modal analysis of brick walls reinforced with concrete wall could be analyzed with ANSYS software while the appropriate modle was chosen. Reference can be provided for the study of dynamic characteristics of the structure.
Assessment Method of Stress Reliability Based on Effective Prestress Testing for Existing PC Bridge
Authors: Yan Lei , Liu Ying Chen
Published: October 2011

In order to investigate the emergency capacity of the full prestress and A-class components under normal service conditions, vertical tensioned increment method was be applied to study the statistic discipline of effective prestress for existing PC bridges. The results showed that the statistical parameters of effective prestress obey normal distribution and ~N(0.97,0.09). On this basis, the stress-resisting probabilistic models of two kinds of components were constructed. The dead load effect probabilistic model and the vehicle load probabilistic model considering evaluation base period were established. Based on the research above, the assessment method of stress reliability for PC bridge under normal service conditions was presented.
Unloading Analysis and Real-Time Monitoring of Steel Reticulated Shell in China University of Petroleum
Authors: Deng Peng , Wang Lai , Han Na , Liu Yan
Published: October 2011

Hyperbolic paraboloidal latticed shell, with a span of 93.6m, is adopted in the gymnasium of China University of Petroleum. Single-layer shell of the inner 9 circles adopts crossed web bars to increase its stiffness and bearing capacity, and double-layer shell of the outer 3 circles is used to bear horizontal action. Elastic support is employed to simulate hydraulic support of the shell, beam element to chords, and truss element to crossed web bar. Thus unloading program, from inside to outside and multiple cycles, is raised. To master the influence of unloading on the shell’s security, vibrating string extensometer and total station are used to monitor stress and vertical displacement of key points. By comparing theoretical data with monitoring results, it is proved that the shell’s stress and deformation comply with the design requirements, and indicated the success of unloading.
Stability Test on Aluminum Alloy Round Pipe for Structure
Authors: Gao Yong Tao , He Ting , Fu Peng Bin
Published: October 2011

For the aluminum alloy pipe stable form and buckling capacity, axis compressing test for 4 sections which each specification in three members, total 36 members, thus, we work out the ultimate bearing capacity for a little slenderness ratio alloy round pipe and relation between slenderness ratio and coefficient of stability, to provide test data for drawing pillars curve of the same type member. Through observed aluminum alloy compressing member changing with test process, record test phenomenon, and combined with instruments of test data record, providing the basis for further theoretical analysis.
Analysis of Pipe Pile-Pile Cap-Superstructure Ground Motion Response
Authors: Liu Chun Yuan , Han Ming Feng , Sun Dong Kun
Published: October 2011

Measure the test points of the natural frequencies, the Fourier amplitude spectrum, power spectrum and other parameters by enter different types and frequencies of seismic waves and the stimulation of white noise in the pile shaking table test and seismic wave propagation in the model pipe. Analysis of the transfer law of seismic waves in the pipe pile-pile cap-superstructure lead to the dynamic characteristics result of the test point. Besides, the thesis studies the dynamic characteristics and dynamic response of the pipe pile-pile cap-superstructure under the action of earthquake and the propagation law of seismic waves in the system of the pipe pile-pile cap-superstructure.
Power Gaining in Modern Nantong Planning
Authors: Yu Hai Yi
Published: October 2011

This paper focuses on the power gaining in Nantong planning (1895-1926), and the role that an individual could play in local city planning issues. This study analyzes the evolution of Zhang’s power gaining in four periods through reviewing literatures, investigating historical remains, and interviewing the scholars studying on Zhang. The conclusions are as follows: Firstly, Zhang inherited the power in deal local issues as local elite. Secondly, he tried for new powers by borrowing the concept of Local Self-governance from the west. Thirdly, he also could make new powers through business approaches.
Architecture Concrete Mesostructure Analysis Based on CT Image Fracture Process
Authors: Zhao Liang , Li Chang Hua , Dang Fa Ning , Chen Deng Feng
Published: October 2011

Scanning observation on meso evolution of fracture in concrete is carried out by means of computerized tomography (CT) on uniaxial compressive condition. The cracks in the mortar expansion, in particular, the bond of mortar and aggregate which is key regions of concrete damaged, are drawn out through CT image and CT data, and the destruction process of the concrete can be divided into four stakes, compression, enlargement, the expansion of the CT crack,and destruction. According to the character of CT image，MMD is used to analyze the CT images of the concrete specimens in 4 stages of deformation. The components of the CT images are classified and the spatial distributions of crack or cavity, mortar and aggregate are obtained. The variation process of the relationship between distributions of crack or cavity magnitude and stress are obtained from classification maps. The specimens experienced the process of condensed, volume expansion, crack propagation, coalescence and failure. The method can not only reflect the spatial distribution of the materials but also simplify the following analyses that follow.
3D-DDM Simulation of Crack Propagation of Non-Linear Deformation Structural Plane
Authors: Li Ke , Wang Ying Yi , Huang Xing Chun
Published: October 2011

Structural plane is different from common crack, as it is often under pressure and has non-linear normal and tangential deformation behavior. This paper simulates the propagation of non-linear deformation structural plane by 3D displacement discontinuity method (DDM). Through least square regression of the elements near the tip, the stress intensity factor (SIF) of the tip is obtained. Maximum energy release rate criterion is adopted to be the fracture criterion in this paper, assuming the propagation occurred in the normal plane of the front edge, KI is modified to consider the effect of mode Ⅲ crack. The structural plane model is considered as a hyperbolic non-linear model, the Barton-Bandis model is adopted as the normal deformation model, the Kulhaway model is adopted as the tangential deformation model, and the Mohr-Coulomb criterion is adopted as the shear strength criterion. The result shows that the propagation direction is along the direction of the load, DDM could efficiently trace this process.
Analysis of Application and Development of Diagram in Architecture Creation
Authors: Wu Min , Ma Zhi Liang
Published: October 2011

As a significant tool in architecture design nowadays,the diagram’s development has gone through a long history.In recent years,the developing of diagram theories make architects pay more attention to the relationship between the diagram and architecture design.This text introduces the development of the diagram in architecture design briefly and discuss the mechanism of the diagram works in an architect design process elaborate.The forth part of the text introduces the new technique’s application in the diagram.
Model Test Research of the Influences of Rock-Fall Impaction on Deformation of the Cut-and-Cover Tunnel Structure
Authors: Wang Yu Suo , Zhao Ju Mei , Tang Jian Hui , Li Guo Qing
Published: October 2011

On conditions of different weight，height, shape and the property of slope surface, the tunnel portal structure’s deformation evoked by rock-fall impaction has been researched in laboratory by using a 1/30 scale similar model. The study shows that there is a simple linear relationship between the structure’s deformation , the rock weight and the rockfall height when the slope gradient is 1:0.5 and the slope surface is slippery and the multiple linear relationship between the structure’s deformation , the rock weight and the rockfall height has been obtained. Effect of the shape of the rockfall and the property of slope surface on structure’s deformation has been comparative analyzed.
Numerical Simulation Study on Size Effect of Dynamic Properties of Coarse Materials
Authors: Yang Gui , Gao Qi Yin , Gao De Qing , Liu Yan Chen
Published: October 2011

Though the test level has improved highly, the original grading curve of coarse materials should be reduced in some scale in dynamic triaxial test. This method must affect the difference between the test results and the real results, which is called scale effect. In this paper, the scale effect was studied by using particle flow code (PFC) based on dynamic triaxial tests. The relationship between microscopic shear modulus and the maximum particle diameter can be simulated by hyperbolic function. The results show that the dynamic shear modulus and damping ratio are increased with the sample size increase. The normalized dynamic shear modulus vs. normalized dynamic shear strains of different size samples are located in a narrow space which can be simulated by modified Hardin-Drnevich model formula. The parameters of maximum shear modulus and damping ratio of different sample size can be simulated by power functions.
A Viscoelastic Analysis on Saturated Axial Symmetrical Problem
Authors: Zhang Bin , Zhao Ying Hua
Published: October 2011

Explicit equations of stress, displacement and pore-water pressure are derived by solving Biot’s consolidation equations through Laplace and Hankel transforms. A numetical analysis is developed on the semi-infinite viscoelastic body with Burgers model. Reasonable results show that the present theory is correct and with high accuracy and efficiency.
The Application of Cast-in-Place Pile in Fanhe Harbor Bridge
Authors: Tang Bin , Liu Ya Guang , Zhang Xiao Xin
Published: October 2011

Cast-in-place pile with its strong adaptability, cost moderate, construction simple and its high bearing capacity, can penetrate through the soft soil layer, facilitate underwater construction and the settlement is small and other characteristics are widely used in bridge engineering field. But the changeful gulf climate, tidal fluctuations bring a lot of inconvenience to bridge foundation construction, and sea water features affect the durability of the bridge foundation, so cast-in place pile foundation construction are difficult technical at gulf environment. This paper introduces a successful practice about cast-in-place pile engineering in the bay bridge. Combined with the Fanhe Harbor Bridge engineering practice, based on the special hydrological, geological conditions, this paper expounds the gulf cast-in-place pile construction and key technology.
Top-down Excavation of a Metro Station in Soft Clay
Authors: Lu Ye , Tan Yong
Published: October 2011

This study examines the performance of a deep metro excavation constructed by top-down technique in Shanghai clay deposits. The monitoring items included deflections of diaphragm walls, vertical movements of steel columns, and axial forces of the struts. Based on analysis of the field measurements, some interesting findings were obtained, which will be useful for both practitioners and researchers.
Study on the Vertical Rational Structure of Tunnel Lining in the Fault-Rupture Zone
Authors: Li De Wu
Published: October 2011

Related to the actual project in the new Qi Daoliang tunnel between Lanzhou and Lintao highway, select 300-meter calculation range along the tunnel vertically including fault-rupture zone and effect fault-rupture zone, utilize 8 -node, 6-plane block element to scatter the calculating range, at the same time, use the deduced 8 -node, three dimensional jointed element to imitate the transformation gap of the tunnel lining, employ three-dimensional elasto-plastic static finite element program to analyze stress and transformation state of surrounding rock and lining in different construction stages of the new Qi Daoliang tunnel. Through the analysis and comparison of the calculation result of the three conditions: not placing transformation gap through, placing one transformation gap in the middle of the fault-rupture zone, placing two transformation gaps in the beginning and the end of the fault-rupture zone etc, we can get the following points: ①The gallery transformation in the fault-rupture zone and the plastic area in the surrounding rock are obviously bigger than the non-fault-rupture zone. ②Owing to the effect of fault-rupture zone, the increasing range of internal force of the initial support and twice lining is about 10% to 30%. ③Placing the transformation gap in the fault-rupture zone can obviously play a role in releasing lining internal force and transformation energy in the surrounding rock. ④In the start and end changing point of fault-rupture zone, the transformation gap should be placed in the tunnel lining.
Study on Construction Blasting Vibration Control and Effect of Space Coupling of the Large Cavern under High Crustal Stress
Authors: Lei Sheng Xiang , Gao Bo
Published: October 2011

Taken extremely complex and specific underground chamber excavation of TBM assembly in Jinping Ⅱ Hydropower Station as the background, the research was done on construction blasting vibration effects and control technology in the large cavern under high crustal stress. Combined theoretical analysis with field trials and other methods, chamber controlled blasting program and its parameters of better control of blasting vibrations were set in regard with the geological conditions of TBM assembly chamber, cross-section shape and size, chamber body structure and sequence of construction methods. The blasting vibration test program under complex conditions and measuring points were arranged appropriately. The result is that the blasting vibration attenuation coefficient values and was 1.24 and 0.56. Practice shows that the impact of blasting vibration on rock and underground structures is lesser, therefore the chamber driving speed and construction safety can be ensured by the chamber controlled blasting technology for construction. The blasting vibration attenuation that is deduced from the practice can better reflect the effect of blasting vibration chamber: according to the correlation between dose and level distance of blasting, safe construction blasting can be guided. In addition, there is a greater relevance between blasting vibration control method, materials and strength of underground structures. As blasting dose is the same, with increased age and strength of concrete, its ability to withstand the intensity of blasting vibration is also increased dramatically.
Main Points about Blasting Demolition of a Building at Lin'an
Authors: Hu Jin , Xin Zhen Kun , Liu Gui Chun , Tang Xiao Ping
Published: October 2011

Lin'an City, a building located in the downtown, surrounding and supermarkets, banks, residential quarters, office space and many other enterprises and adjacent companys.Complex building is difficult to remove. The direction of the main building collapsed requires accurately, to ensure blasting construction safety and the safety of the adjacent environment. To this end, on the basis of the removal program design,construction specific issues that need attention and contingency plans were discussed. Such blasting and demolition projects control points and the problem should pay attention to are summarized.
Cultural Continuity of the Traditional Elements in Architecture
Authors: Zhang Xiao Rui
Published: October 2011

The way of “building high hathpaces” occupies a unique position in traditional Chinese architecture. According to the research, the ancient hathpace can not only increase the volume, raise the building height, make the buildings look more magnificent, but also help ascend for look far and widen your horizon, meanwhile, be beneficial to damp-proofing and ventilation for the hathpace itself. This is the thousands of years’ intelligence gathering of Chinese traditional architecture. In the design of “Hathpace of Stone Drum Pavilion in Baoji”, the designers take “inheriting Chinese architectural and cultural heritage” as its aim, use modern aesthetic view to elaborate the measurement and proportion, consequently, surpass the boundary of age and style, and refine the historical and cultural quintessence by innovating and developing which is wrapped up in traditional architecture. Meanwhile, material is the basic quality of architecture. The culture differences in the building of various nationalities and times came on materials. So, the using of stone can increase historical culture and feature of urban texture for “building high hathpaces”. A new approach to formal language, contemporary materials, and building technology will make “Hathpace of Stone Drum Pavilion in Baoji” become information carrier of traditional culture, communication platform between traditional building Stone Drum Pavilion and modern city, and unique building cultural phenomenon for the city of Baoji who will retain its graceful bearing and display the culture in Chou-Qin Dynasties, moreover, provide a new way of thinking for how to inherit the culture of traditional architecture.
The System of Evaluation Indicators for Urban System Planning
Authors: An Lei , Zhang Pei
Published: October 2011

Evaluation of urban system planning is to build its index system to evaluate the results of planning. First, from scale level, functional structure, spatial structure, network organizations, social development, and environment assessment, these 6 major -level evaluation systems separate into 9 secondary indicator issues and 33 tertiary evaluation indicators. After that, give each indicator a specific weight by AHP and linear algebra knowledge, then build the system of evaluation indicator for urban.
Character and Social Interpretation of Local Architecture in the South of Shaanxi
Authors: Yan Jie , Wang Jun
Published: October 2011

Analyses the types and characters of the local architecture in the south of Shaanxi Province.Unscrambles the producing process and forming reason from the view of sociology.Uncovers the information existed in buildings.Spreads research method and scope to provide theoretical and practical foundations for the reconstruction and creation of architectural culture.