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31 December 2001, Volume 20 Issue S1 Previous Issue    Next Issue

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Linearity and non-linearity stabilty analysis of the long-span Pre-stressed concrete cable-stayed bridges GU An bang,XIANG Zhong fu,XU Jun lan,SUN Shu hong 2001, (S1): 1-6.  Abstract ( )   PDF (206KB) ( )   This paper draws a reasonable conclusion by calculation on the stability of the long span pre stressed concrete cable stayed bridges.All of the results are based on a finite element calculating model,in which the cables only tensioned property was simulated and the effects of the pre tension cables and pre stressed reinforcement are included.Furthermore,the effects of the geometric non linearity and material nonliearity are studied together. References | Related Articles | Metrics

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Lagrange Equation for solving the flexible ship-bridge multi-body system’s collision dynamics XIAO Sheng xie ,PENGKai ,CAI Ru zhe , ZHOU Kai fa 2001, (S1): 7-11.  Abstract ( )   PDF (169KB) ( )   Based on the detailed analysis of the flexible ship bridge multi body system,a model of discrete concentrated masses linked with elastic elements is built up in this paper,and the Lagrange Equation for the model is given according to the coordinates in broad sense. In turn,the paper discusses the solutions for the equation and the expression of the colliding forces as well as the judgment of the ending time of the colliding process. References | Related Articles | Metrics

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The theory and practice for construction control in large CFST arch bridges ZHOU Shui xing,ZHANG Yong shui,GU An bang,WU Guo song 2001, (S1): 12-16.  Abstract ( )   PDF (190KB) ( )   It is introduced in this paper that the construction control theory for large CFST arch bridges,including analyz method and parameter identification,calculating of control level in segmental erection and adjusting technology of concrete which was constructed.It put forward the emphasis of construction control and the stage of parameter identification.Its applied to JianHan fiveth bridge as so. References | Related Articles | Metrics

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Structural analysis during the course of construction of arch bridge with the aid of centring XIANG Zhong fu,XU Jun lan,WANG Yin hui,GU An bang,HE Hai qun 2001, (S1): 17-22.  Abstract ( )   PDF (193KB) ( )   The analytical method and model of structure during the construction of arch bridge with the aid of centring is studied in the paper.The feasibility of the analytical method and model and the importance of the structural analysis during the course of construction are testified by the comparison of the result from theoretical analysis,simulation test and measurement on the bridge. References | Related Articles | Metrics

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Simplified analysis on elasto-plastic instability of bridges’ compression members under concentrated transverse loads PENG Kai , XIAO Sheng xie ,SHI Shang wei ,WUWu 2001, (S1): 23-25.  Abstract ( )   PDF (113KB) ( )   A general static model of the bridges compression members under concentrated transverse loads is set up in simulation of the simple model supporting the Shanley Theory which can satisfactorily explain the behavior of the axially loaded compression member in elasto plastic instability.The analysis based on the model gives the new concept of critical transverse loads as well as the worst acting location of the transverse loads. References | Related Articles | Metrics

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A probe into mechanism and standards of bridges’ consolidating ZHOU Jian ting 2001, (S1): 26-28.  Abstract ( )   PDF (133KB) ( )   Based on facts,the author analyses the mechanism of bridges consolidating.The three standards of bridges consolidating presented in this paper will be useful to get rid of the false viewpoints about bridges consolidating in practices. References | Related Articles | Metrics

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The summary of the research on the vertically tensioned prestressed concrete ZHOU Zhi xiang ,XUMou ,LI Zhu wei ,ZHANG Tai xiong 2001, (S1): 29-33.  Abstract ( )   PDF (156KB) ( )   Based on the comprehensive analysis of the strong and weak points of the present major prestressed concrete technology,the first author puts forward a completely new prestressed concrete technology the vertically tensioned prestressed concrete(VTPC).The theory of the technology,the method of the construction and the existing research work have been introduced briefly in this paper.It has been made known by research and practice that the Vertically Tensioned Prestressed Concrete can economize steel products,simplify technology,improve work efficiency besides maintaining the good mechanical properties of the normal Post tensioned Prestressed Concrete.So the Vertically Tensioned Prestressed Concrete is provided with distinct technical and economic benefit. References | Related Articles | Metrics

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Basic failure types of cement concrete pavement caused by interaction between the surface course and the base course YI Zhi jian ,TANG Bo ming ,LI Zu wei , YANG Qing guo ,WU Zu lie 2001, (S1): 34-38.  Abstract ( )   PDF (198KB) ( )   The bad effect to cement concrete pavement influenced by joint sawing and temperature has been analyzed from a new perspective.The interaction between the surface course and the base course causes three basic failure types,which lead to further failure of pavement.Such basic failures can be avoided when setting a kind of intermediate layer between the surface course and the base course,and as a result the failure of pavement can be reduced to the utmost. References | Related Articles | Metrics

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The new technique in freeway construction in a mountainous area LING Tian qing , WANGYan , TANG Qing qian 2001, (S1): 39-44.  Abstract ( )   PDF (192KB) ( )   Based on the scientific research and engineering practice in recent years the authors summarize the new technique in freeway construction in a mountainous area.The new technique comprises reinforced earth technique,anchored slope,semi rigid type pavement material and construction technique etc.Application status of the new technique is also recommended. References | Related Articles | Metrics

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Study on the effect of fatigue cracks in cement concrete pavement by vehicle-road interaction WU Guo xiong ,YIAO Ling kan 2001, (S1): 45-47.  Abstract ( )   PDF (140KB) ( )   There are many factors which influence cracks of cement concrete pavement.First,this paper analyzes the dynamic response by moving vehicle,and constructs a dynamic model of a slab(beam) rested on a viscoelastic foundation.Then the effects of displacement and strain and fatigue cracks in pavement slab by vehicle road interaction are discussed.The aim of the paper is to provide methods to prevent cement concrete pavement from cracking. References | Related Articles | Metrics

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The condition of the overload transportation in Chongqing and analysis on the influence of the pavement life caused by the overweight vehicles HE Zhao yi , TAN Bo ming ,CHENG Jun yi , MO Chang chun 2001, (S1): 48-52.  Abstract ( )   PDF (188KB) ( )   Combined with the main roads which were built by our country or Sichuan province and which pass through Chongqing,this paper proposed the regulation of the axel load distribution after the survey of axel load table on some main roads mentioned previously on the spot.Based on results of the survey,the influence of the pavement fatigue life caused by the overload vehicles was primarily analyzed.The results of the survey will play an important role in the following research that will focus on the destroy of the overweight vehicles as well as the countermeasures. References | Related Articles | Metrics

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The test research on stabilized soil base (subbase) in the middle areas of sichuan HE Zhao yi ,WANG Chuan fu ,DINGXia 2001, (S1): 53-56.  Abstract ( )   PDF (166KB) ( )   In this paper,lime.Cement and Lime flyuash stabilization soil base (Subbase )are studied in the middle areas of Si chuan province.Its strength of compress and split and modulus of resilience are analysed.Eventually,the designed parameter value of three stabilized soil base (Subbase) are proposed. References | Related Articles | Metrics

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Horizontal alignment design for mountain road reconstruction GAO Jian ping,LIUYan 2001, (S1): 57-60.  Abstract ( )   PDF (138KB) ( )   In the period of high development for road construction,reconstruction is an important part.How to survy and design the road reasonable and quickly in order to improve the quality of design and reduce its cost is worth to study.In this paper,several new methods,especially suitable for computer aided design proper for horizontal alignment design of mountain road reconstruction,are given. References | Related Articles | Metrics

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An study on cement Fa-bound hoggin for roadbase XIAOGeng ,LIANG Nai xing ,YANG Chao jie ,SHANGGang ,CAO Shu ben 4,GAO Ai min 5 2001, (S1): 61-65.  Abstract ( )   PDF (162KB) ( )   By the experimental study of cement FA bound hoggin for roadbase,the variational law of its physical and mechanical performance is analyzed in the paper so that its performance for highway is evaluated.The conclusion will give directions to practical engineering. References | Related Articles | Metrics

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The appraisal about bidders of highway construction ZHOUZhi ,LIU Xu hua , CHEN Yuan xiang ,LIU Fang qiang ,AO Jian hua 2001, (S1): 66-68.  Abstract ( )   PDF (106KB) ( )   According to the situation that there is short of the theory about appraising bidders,the author raises the method of appraising bidders by grey ralation.The method provides a scientific basis for the selection and assessment of bidders. References | Related Articles | Metrics

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On "three supervisions" in engineering project construction HUANG Xian gui,CAO Zhi xiang 2001, (S1): 69-72.  Abstract ( )   PDF (129KB) ( )   This paper discusses the current situation and functions of the "three supervisions" in engineering project construction.emphasizes the necessities of carrying out"three supervisions" according to the contract stantard to make our supervision approaching the advanced world level.It is of theoretical and practical values to the supervision in the engineering project construction. References | Related Articles | Metrics

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The scale maintenace of expressway and the social maintenance enterprise GUO Xiao hong , JIA Lian sheng ,CHENG De hong 2001, (S1): 73-76.  Abstract ( )   PDF (150KB) ( )   There are some important problems in expressway scale maintenance,such as the existence of scale income,the optimal scale of maintenance construction,the maintenance ability and its token of maintaining enterprise,the relation between construction scale and maintenance ability scale,and the necessity of setting up a social company in Chongqing area,etc.This paper probes into these problems at large. References | Related Articles | Metrics

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The total process nonlinear analysis of lateral loaded pile and witch controlled design——composite stiffness principle with biparameter method WU Heng li 2001, (S1): 77-82.  Abstract ( )   PDF (190KB) ( )   In this paper gave the total process nonlinear analysis of lateral loaded pile and witch controlled design by composit stiffness principle with biparameter method.Above principle and method gave by the author of this paper (1985) .In the meantime the author gave the parameter values:composite stiffness EI and biparameter 1n with m for controlled design. References | Related Articles | Metrics

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The reinforced earth retaining wall deterioration mechanism and the methods of reinforcing YANG Xi wu, ZENG De rong,WU Guo xiong,OUYANG Zhong chun 2001, (S1): 83-85.  Abstract ( )   PDF (135KB) ( )   The reinforced earth retaining wall deterioration mechanism is analyzed and the methods of reinforcing these reinforced earth retaining wall in deterioration are presented in the paper.A demonstration project,in which the anchor rope frame system is used to reinforce the reinforced earth retaining wall in deterioration,is introduced to explain the methods of reinforcing the reinforced earth retaining wall in deterioration with anchor rope frame system. References | Related Articles | Metrics

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Study of the ultrasonic tomographic model in the concrete damage ZHAO Ming jie 2001, (S1): 86-90.  Abstract ( )   PDF (214KB) ( )   Based on the propagation theory of ultrasonic in the concrete,a theoretical model employed in the testing of damage in the concrete structure have been presented in this paper.The calculation results of the models indicated that the theoretical modeling has good resolution ration and anti disturbance power. References | Related Articles | Metrics

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Development of the andyzation of vehicle innernoise and noise control technology SHAO Yi ming, WANG Wen xing 2001, (S1): 91-94.  Abstract ( )   PDF (126KB) ( )   This paper studied the passive and active control techniques of vehicle inner noise,summarized the development and current situation of analyzing and calculating methods of vehicle inner noise. References | Related Articles | Metrics

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Study on standards and policies of motor vehicle’s emissions FENGXiao 2001, (S1): 95-99.  Abstract ( )   PDF (146KB) ( )   In this paper,based on consideration of controlling technologies and policies on the motor vehicles in recent 30 years,harmness of the air pollution caused by motor vehicles emissions are studied and summed.Researches on the key problems about the policies and reasonable standards of controlling are made and some useful points of view are given. References | Related Articles | Metrics

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Thermoload analysis of ChangAn JL465Q1 engine JIAN Xiao chun,DUAN Tai lai 2001, (S1): 100-103.  Abstract ( )   PDF (138KB) ( )   JL465Q1 engine is the engine equided in ChangAn mini bus SC6331 which takes a leading role.But in actual use,it produced over high cooling water temperature,when it runsidly with air conditioner.This paper analyses the cause of the appearance through calculating the engine thermoload and the cooling intensity of cooling system,and supplies ways to improve it. References | Related Articles | Metrics

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Development and application of compressed natural gas vehicles JIAN Xiao chun,SHAO Yi ming 2001, (S1): 104-108.  Abstract ( )   PDF (162KB) ( )   At present,compressed natural gas vehicles(CNGV) are getting widespread application in China and throughout the world, for the requirements of protecting environment and saving oil fuel.This paper elucidates principle of operation on CNGV,analyses its performance,and goes further into CNGV technique and new development. References | Related Articles | Metrics

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Investigation of the characteristics of multi-phase rupture destructive action and emulation on the regulating structures at mountain ous rivers WANG Ping yi ,RONG Xue wen ,CHENG Chang hua ,HE Xiao chun 2001, (S1): 109-111.  Abstract ( )   PDF (133KB) ( )   This paper investigates the characteristics of multi phase rupture destructive action among solid,liquid and gas states,concepts and relations of and emulation models.All the discussion in the paper can be a guide to deep research of the water damage. References | Related Articles | Metrics

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Investigation on the wind-wave effects on reservoir wharf CHENG Chang hua,DENG Bo qiang 2001, (S1): 112-115.  Abstract ( )   PDF (131KB) ( )   Based on the model test and analysis of field data,the relation between the windwave and the collapse of reservoir wharf bank has been derived.Some useful figures and data are obtaioed by means of attentive analysis. References | Related Articles | Metrics

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Curve classified and its regulation measure of tidal channel in Zhujiang delta XU Guang xiang,ZHENG Yin gong 2001, (S1): 116-120.  Abstract ( )   PDF (174KB) ( )   Chencun waterway is a tidal river in the center of Zhujiang Delta.There are many curves which radial is very sharp in the waterway.In order to improve grade of channel,regulation measures of alonge curve and river mouth curve and compound curve have been tested in this paper. It is important significance in channel regulation that this paper gives regulation method suit for different curve types. References | Related Articles | Metrics

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The basic principle of disposition design about structure crossing over river above the navigable river WANG Duo yin , YANG Hong , CHEN Ming dong 2001, (S1): 121-123.  Abstract ( )   PDF (128KB) ( )   This paper discusses the bsaic principle of disposition design about structure crossing over river above the navigable river,and some engineering problem,in order to reduce the affecting of the structure crossing over river to the navigable river to a minimum. References | Related Articles | Metrics

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Application of finite element analysis in structure analysis and computer simulation HANXi,ZHONGLi,LIBo 2001, (S1): 124-126.  Abstract ( )   PDF (99KB) ( )   This paper briefly introduces the current situation and development about finite element analysis application in structural analysis and computer simulation. References | Related Articles | Metrics

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Generation of orthogonal co-ordinate system for the two connexity area YANG Sheng fa , YOUTian , LIUYan 2001, (S1): 127-130.  Abstract ( )   PDF (161KB) ( )   Through solving the Laplace equations about physics co ordinate to transform plane,a numerical method of determining the grid points had been successfully used to generate the orthogonal co ordinate system.the disposal means of the boundary condition & the numerical method for the two connexity area had been advanced .The means obtained the preferable effect for generation of the orthogonal co ordinate system in the Meizizhou reach. References | Related Articles | Metrics

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Study on solving information encryption problems by using permutation groups CAO Jian qiu,HUANGYing 2001, (S1): 131-132.  Abstract ( )   PDF (76KB) ( )   In this paper,a method of solving the information encryption problems by using the permatation groups is presented.The algorithms of encryption and decrytion with permutation groups are demonstrated,and the encryption key and decryption key are explained.Besides,the authors point out there may be some problems while using the permutation groups to solve information encryption problems. References | Related Articles | Metrics