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15 March 2002, Volume 21 Issue 1 Previous Issue    Next Issue

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Current situation and development of study on seismic performance of long-span arch bridge ZHAO Can-hui,GAO Yan-mei 2002, 21(1): 1-5.  Abstract ( )   PDF (153KB) ( )   In this paper,first,the simulation of asynchronous excitation is introduced.Second the existing research method and work on long span arch bridge are summarized and discussed.Finally some shortcoming in existing research is showed References | Related Articles | Metrics

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Curve simulate method on digital terrain model YAN Qiang WU Guo-xiong SUN-Si 2002, 21(1): 6-8.  Abstract ( )   PDF (145KB) ( )   This paper researches on the theory and method of curve simulation which has been successfully utilized in the field of plane,automobile and ship design,and exerts curve simulate method to set up digital terrain model in highway alignment CAD.By this method we can easily get digital terrain model References | Related Articles | Metrics

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The 2nd order complete formula with ralationship of strain and displacemant in the thin plate and three dimensions body WU Heng-li,SUN Jun-ning 2002, 21(1): 9-11.  Abstract ( )   PDF (111KB) ( )   In this paper we gave the 2nd order complete formulae with ralationship of strain and displacement in the thin plate and three dimensions body as formulae (1),(6)and (7) with (9) in text.In the meantime this paper discussed the T.V.Kármáns formulae of large deflection thin plate References | Related Articles | Metrics

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The equilibrium analysis for differential multi-road line with stochastic choice in transportation network WEI Lian yu,PANG Jian xun 2002, 21(1): 12-14.  Abstract ( )   PDF (138KB) ( )   This paper analyses a market equilibrium model for differential multi road with stochastic choice between one OD pairs.The multinomial logit model is used as the probabilities of the stochastic choice and the supply of differentiated roads is subjected to the total demand function of all roads.A modified method of successive average is proposed and an illustrative example is employed effectively in this paper References | Related Articles | Metrics

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Road pricing under user equilibrium for mixed traffic networks GU Qiang,LI Zhi-chun 2002, 21(1): 15-19.  Abstract ( )   PDF (169KB) ( )   Road pricing,an effective means of managing traffic demand,has been advocating in many countries and regions.The problem discussed in this paper is how to determine road pricing under user equilibrium for mixed traffic networks.The model which satisfies wardrop UE principle and modal split is proposed.An algorithm and a numerical example are also given. References | Related Articles | Metrics

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Urban transportation construcion scale of sustainable developmet ZHU Shun-ying,WANG Hong 2002, 21(1): 20-22.  Abstract ( )   PDF (135KB) ( )   The requirements of urban transportation and the significance of construction scale are discussed in this paper,ie. sustainable developments. The ideas and method determining the sustainabl devlopment urban transportation construction scale is brought forward,basic ally on analyzing its main factors References | Related Articles | Metrics

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Internet-based project management and project management system LIU Wei-jun,YUAN Jian-bo 2002, 21(1): 23-26.  Abstract ( )   PDF (143KB) ( )   The application of internet gives powerful support to the reform of project management.This paper first analyzes the reform of using internet in implementation of project management.Then,it aiscusses the project management system that is designed based on internet References | Related Articles | Metrics

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Application of artificial neural network theory in optimizing indexes LI Ji-rui,ZHANG Sheng-rui 2002, 21(1): 27-29.  Abstract ( )   PDF (143KB) ( )   Combined with the limitation of optimizing indexes theory of comprehensive evaluation,this paper studied the contribution analysis of output value with artificial neural network,then it deletes the indexes which not important or weak influence. It takes important accordance of optimizing indexes in creating model,comprehensive evaluation and making policy etc. References | Related Articles | Metrics

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Research on the expansion force in the anchored end of the continuously reinforced concrete pavement(CRCP) ZHANG Hong-liang,HU Chang-shun 2002, 21(1): 30-33.  Abstract ( )   PDF (141KB) ( )   In this paper,the expansion force in the anchored end of the continuously reinforced concrete pavement (CRCP) caused by the rise of the temperature is calculated with section iterative method,and the corresponding calculation program is edited,and the influence of the allowable movement of the end,the linear expansion coefficient of the concrete and other parameters are analyzed References | Related Articles | Metrics

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On the treatment of censored data in fatigue test of cement concrete WU Shi-sheng,WU Jian-min 2002, 21(1): 34-37.  Abstract ( )   PDF (135KB) ( )   The fatigue test data often include some censored data,which are commonly omitted when treating them,while the authors believe is unreasonable.Accordingly,assuming the data follow the normal (or logarithm normal) distribution,a method on the treatment of such problems is derived on the basis of statistics,and then an example is given with the method.It is found that the method is viable to treat the fatigue test data involved some censored data References | Related Articles | Metrics

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Fly ash modified pavement concrete WANG Rui-yan 2002, 21(1): 38-40.  Abstract ( )   PDF (131KB) ( )   As industrial solid waste,fly ash is of potential activity.When excited by alkali,it can be changed into cementing material.By analyzing the effect of volcanic ash on fly ash concrete,we can determine the most reasonable fly ash content and exceeding quantity coefficient according to materials used in concrete.So we can use the activity of fly ash to the full.At the same time,concrete can have the best properties for pavement and have the best benefits of economy and environment References | Related Articles | Metrics

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Practical design method to the vacuum-mounding combined preload on expressway embankments FU Guang-qi,AI Ying-bo,LI Zhen 2002, 21(1): 41-45.  Abstract ( )   PDF (169KB) ( )   The vacuum mounding preloading method to improve soft ground is a new technique to soft ground improvement.This method is developed from vacuum preloading and mounding preloading.A practical calculation method to predict the settlement in the period of the vacuum mounding preloading has been put forward in this paper to calculate the settlement of the expressway embankment.This calculation method is a amended method of earth preloading method is a amended method of earth preloacling method References | Related Articles | Metrics

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An investigation on the influence of reinforcement structure on the shearing strength of reinforced soil YANG Xi-wu,ZHONG Yi-ming 2002, 21(1): 46-50.  Abstract ( )   PDF (166KB) ( )   Three kinds of reinforced soil with different structures of reinforcement (strap,perpendicular strap and net ) are tested in triaxl test on their shearing strength.The mechanism of the influence of reinforcement structure on the shearing properties of reinforced soil is analyzed.It is suggested that the elastic plastic model can be used as the model representing the stress strain relation for reinforced soil.And the parameters of elastic plastic models for three reinforced soils are given in References | Related Articles | Metrics

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The field test study of high embankment foundation compaction in Panzhi-hua airport HE Zhao-yi,ZHOU Hu-xing,WU Guo-xiong 2002, 21(1): 51-55.  Abstract ( )   PDF (169KB) ( )   With regard to the field tests of foundation compaction in Pan Zhi Hua airport high embankment,impact method with impact energy of 2000kN·m,3000kN·m and impact compaction spot in shape of 4 equal sides is studied and the consolidation effect of foundation after impact is evaluated.Finally,the reasonable impact compaction parameters are recommended. References | Related Articles | Metrics

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Research on industrial waste stabilized soil PENG Bo,LIU Jian,DAI Jing-liang 2002, 21(1): 56-58.  Abstract ( )   PDF (108KB) ( )   In this paper,based on systematic research on industrial waste stabilized soil,the mechanism of stabilized soil strength is analyzed,and the road performance of industrical waste stabilizer soil and lime stabilized soil are compared.The paper indicates that the function of industrial waste stabilizer soil is much better than that of lime stabilized soil References | Related Articles | Metrics

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An introduction to some non-conventional processes in subgrade construction LUO Tao 2002, 21(1): 59-61.  Abstract ( )   PDF (102KB) ( )   To solve the specific problem by using non conventional construction process confirmed that it is benefiial for quality assurance and quality control in the field.The So called non conventional process is not against conventional process or operation procedure but obeys the same principle and solve specific problems with specific treatment.It is also a useful aid to the conventional procedure References | Related Articles | Metrics

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The self-support structure system in cut slope of urban road TENG Qian-liang 2002, 21(1): 62-64.  Abstract ( )   PDF (139KB) ( )   Integrating road cut slope engineering of Chongqing City of China,the author studies new type support structure of cut slope (self support structure system),its mechanics calculation model and method of design,and construct art etc References | Related Articles | Metrics

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A brief introduction on the design and construction of ISS solidified soilbed CHEN Shi-wen 2002, 21(1): 65-67.  Abstract ( )   PDF (129KB) ( )   This paper introduced the design and construction method of the ISS(Ionic Soil Stabilizer) roadbed at the Zengcheng Guangzhou 1st round road,which can be reference for the other designer and constructer References | Related Articles | Metrics

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Preliminary probe of high side slope reinforcing control project on coal stratum gob road highway fault trough HUANG Xiao-hua,HUANG Ru-xiang,LIU Jie 2002, 21(1): 68-73.  Abstract ( )   PDF (198KB) ( )   This article takes the Yangmei Mountain(K16+930K17+260) fault trough high side slope control project on the Jing Zhu Expressway Guangdong Section North Part B Stake coal stratum gob as example and introduces the comprehensive control engineering practice on high side slope by the supporting and retaining structure such as reinforced concrete hand hole digging no skid pile and prestressed anchor line ground beam,and the slope face protection measures such as full paved paste building schistose References | Related Articles | Metrics

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The test of application of the three-dimensional vegetation net grass-planting revetment in the banks of expressway QIU Guo-feng,WANG Meng-xia 2002, 21(1): 74-76.  Abstract ( )   PDF (101KB) ( )   In view of situation of sandy terrene slope surface and semi efflorescent landslide lithoid excavation banks which are easy to be landslide,the protecting banks used in Xihui taishan Expressway belongs to a kind of new type of the three dimensional vegetation net grass planting revetment as testing which is an efficient,relative low cost way to timely support the shaped banks,and a kind of protecting method of bank to improve the highway landscape efficiently References | Related Articles | Metrics

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A brief discussion on the engineering quality control in construction site LIU Lang,FU Yuan-song 2002, 21(1): 77-79.  Abstract ( )   PDF (102KB) ( )   Based on the engineering practice,this paper discusses the main factors of engineering quality control and six aspects that must be controlled in the construction site.It will be a guiding that how to do well with the quality control in construction site for a contractor References | Related Articles | Metrics

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Quality control of pump concrete ZHAO Shi-hua 2002, 21(1): 80-83.  Abstract ( )   PDF (126KB) ( )   The paper discusses and analysls all the segments of quality control in the construction of pump concrete,based on the construction of continuous beam of BAIJIA cloverleaf junction in N contract section of CHENGDU ring highway.The paper also proposes how to settle each element in the mix proportion and affect the quality due to the mix proportion. References | Related Articles | Metrics

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Key problems to synthetical prevention of Wufengshan landslide in Yunyang Chongqing YUAN Jian-yi,CHEN Hong-kai,WENG Qi-neng,WANG Kai 2002, 21(1): 84-87.  Abstract ( )   PDF (173KB) ( )   In this paper the author analyzes possible factors in the system which can result in the gliding of the Wufengshan landslides through the researches to the engineering and geological character istics in site,proposes a new hamessing system which consists of anchor pile,shell and steel net.The researching thought and method have some value to the synthetical prevention of the landslides in site References | Related Articles | Metrics

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Calculation for side earth-fill of a concrete box culvert WANG Rong,CHEN Hong-kai 2002, 21(1): 88-92.  Abstract ( )   PDF (174KB) ( )   This paper,based on the analysis of site construction and cracks in the experimental concrete box culvert under ShaBin road,draws a deduction that when the side earth fill has some settlement,there will be two failure surfaces in the earth fill which are above the box culvert and exist side friction pointing to earth.Moreover,calculation for the box culvert under the load which based on the deduction is given in the paper References | Related Articles | Metrics

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Analysis of geotechnical physical mechanics parameters to the loose earth in Chongqing reservoir TANG Hong-mei 2002, 21(1): 93-96.  Abstract ( )   PDF (166KB) ( )   Based on tests in Lab to weathering loose earth of the Jurassic Period in Chongqing reservoir,the author approaches some basic relationship among natural unit weight,strength parameters,seepage coefficient and water content.Variation of both cohesion and friction angle with natural unit weight and water content are discussed in this paper.testing results settle a parameter foundation for the analysis of start up and stability of loose landslides References | Related Articles | Metrics

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Analysis of the rational scale of highway construction company WANG Li-ming,CHEN You-lin,LU Yi-zhao,LIU Tang-zhi,SUN Gao-lie 2002, 21(1): 97-101.  Abstract ( )   PDF (166KB) ( )   This paper puts forward the aim of researching the rational constrction scale of highway pavament,then studies the cost of highway pavament,finds the cost related to the construction scale mixing plant instation cost and mixture transportation cost,and anlysizes these costs.It puts forward method and theory of determining the rational construction scale when the contract is certain by analysizing a plenty of engineering cases then desctibes the rational constrction scale of highway pavement wit References | Related Articles | Metrics

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Study on the set-dot of concrete-mixer in maintenance of expressway and the economic radius JIA Lian-sheng,CHENG De-hong,GUO Xiao-hong 2002, 21(1): 102-104.  Abstract ( )   PDF (106KB) ( )   To exert the economy of scale of project of maintenace and to reduce the unit cost of maintenace,this paper discusses how to orient the set dot of concrete mixer and how to calculate the economic radius in the maintenance of expressway References | Related Articles | Metrics

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Study on choice of the stabilized course paving machinery from the perspective of opportunity cost LIU Tao,CHEN Bing 2002, 21(1): 105-107.  Abstract ( )   PDF (148KB) ( )   Starting nith economic liewpoint,using the theory of opportunity cost,connecting the engineering characteristics of Dian Zhan Expressways pavement,We analyse the choice of the base course paving machine for this pavement project to meet the demands from different quarters References | Related Articles | Metrics

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The application of field layout in mountain highway plane curve by the baseline offset method HE Qing-yun,CAO Ren-qing,XU Ji-jiang 2002, 21(1): 108-111.  Abstract ( )   PDF (139KB) ( )   This paper introduced the application of baseline offset method used on the field layoul in mountain highway plane curve References | Related Articles | Metrics

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Experiment of sailing condition of the E Gongyan bridge ZHAO Zhi-zhou 2002, 21(1): 112-115.  Abstract ( )   PDF (190KB) ( )   According to the data from the hydraulic model of E Gongyan bridge,analysis of the navigation clearance,effects on water condition of downbound & upbound and channel dimensions,we draw the conclusions that the building of the bridge has effects on sailing and that the location and pattem of E Gongyan bridge are reasonable References | Related Articles | Metrics

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Numerical modeling of branch stream YANG Sheng-fa,ZHAO Zhi-zhou,YANG Bin 2002, 21(1): 116-120.  Abstract ( )   PDF (174KB) ( )   In this paper,based on disposal means that conquer complex boundary of branch stream,2 D stream mathematical model have been established.The means obtained the preferable effect example for the velocity of flow & water level of Meizizhou References | Related Articles | Metrics

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Determination of automobile maintenance cycle and study of optimization analysis LI xian-min,XU Shuang-yin 2002, 21(1): 121-124.  Abstract ( )   PDF (140KB) ( )   On the basis of prevention policy,this paper decides maintenance cycle and part of the normal route by analyzing predetermined confidence leveland and by establishing and solving mathematics model.Meanwhile the notion of optimization is applied to its determination and to its analysis process.By approaches of technique economy,regress probability,and economy probability,revision is made to meet different demands and purposes,thereby the optimized maintenance cycle is achieved References | Related Articles | Metrics

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A study on the corrosion of concrete by domestic waste water ZHOU Fu-chun 2002, 21(1): 125-128.  Abstract ( )   PDF (134KB) ( )   This paper first studies the characteristic of concrete,including the compsition of concrete and the structure,then based on the composition of domestic sewage by doing expriment(seeing table 1),it discusses how domestic sewage corrodes concrete pipelines,lastly it obtains five conclusions References | Related Articles | Metrics

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MBF-new development direction of flocculant YANG Yan-mei,ZHOU Fu-chun 2002, 21(1): 129-132.  Abstract ( )   PDF (132KB) ( )   This paper beginning with describing the classification,development and application of flocculant aims at introducting the advantages of Microbial flocculant and researches being conducted on it both home and abroad and illustrates the keys to exploting Microbial flocculant in future References | Related Articles | Metrics

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The homogenous magnetic field produced by two coplanar concentric circular coils ZENG Xiao-ying 2002, 21(1): 133-134.  Abstract ( )   PDF (73KB) ( )   Analyzing the structure of magnetic field by a current carrying circular coil,the author proposes the principle and design method of two coplanar and concentric coils producing homogenous magnetic field.Its magnetic field has the homogeneity of magnetic field such as that produced by Helmholtz' coils References | Related Articles | Metrics