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21 February 2000, Volume 19 Issue 1 Previous Issue    Next Issue

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Dynamic Analysis of Continuous-beam Bridge under Moving Vehides LIN Mei, XIAO Sheng-xie 2000, 19(1): 1-5.  Abstract ( )   PDF (197KB) ( )   On the basis of structural dynamics,the paper analyses the continuous-beam bridge dyramic behavior under moving vehicles.By simutating with computer,the paper also discusses how the bridge dynamic behavior change with different velocities,types,loads of vehicles.And with the calculation,the prime factors about bridge dynamic behavior are brought out. Related Articles | Metrics

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Research into the Curved Bridge with large Curvature and Small-siged Girders YANG Shi-jin, GONG Ren-ming, DAI Li-min, JIA Li-jun 2000, 19(1): 6-10.  Abstract ( )   PDF (216KB) ( )   In this paper a series of problems concerning the design,theoretical analysis,model test and real structure test of small-sized simply-supported curved box-girder bridge are studied.The bending and torsion in the bridge are both fitted according to the theoretical calculation of curved girders,thus providing a practical design method with enough precision for engineering practice.A set of construction technology for the erection of prefabricated box-girders which suits our national condition are developed during construction of real bridges.The research would put a basis for the analysis of the curved structure converted from simply-supported condition. Related Articles | Metrics

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Calculations of the concrete-filled Steel Tube Skeleton with I-type Arch Rib During Construction ZHAO Lei, BU Yi-zhi 2000, 19(1): 11-16.  Abstract ( )   PDF (237KB) ( )   Considering geometric nonlinearation of the bridge during construction,structural behavior of the concrete-filled steel tube stiff skeleton of Jinhe bridge over Yalong River in Yanyuan with a span of 170m is analyzed,with the aid of the mixed structure model with the shell,truss and beam-member using finite element method.The internal force,deformation and stability during construction of the arch rib of the bridge are also discussed in detail. Related Articles | Metrics

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Construction Technology of Bearing Platform of West Tower of Haicang Suspension Bridge of Xiamen SHI Wen-xian, QIAO Gang 2000, 19(1): 17-22.  Abstract ( )   PDF (258KB) ( )   This paper introduces the whole process of construction of bearing platform of west tower of Haicang Suspension Bridge by using open cassion. Related Articles | Metrics

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The Application of in 3-Dimensional Modeling and Motion Image of Arch Bridges CHENG Zheng-bing, BAI Kai, MA Jian, SUN Xi 2000, 19(1): 23-28.  Abstract ( )   PDF (277KB) ( )   After the design of a bridge is completed with CAD,the practical image of the very bridge can be achieved by employing the object modeling,material design and animation approaches 3Ds.Max so as to produce a real,vivid and directly perceiving effect.The writer has made some fruitful experiments in using 3Ds.Max to establish mult-dimensonal designing spaces and redesign the bridges. Related Articles | Metrics

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Simplified Calculation for the Lowest Symmetrical Vibration Natural Frequency of Arch JIANG Zhi-gang 2000, 19(1): 29-30,37.  Abstract ( )   PDF (134KB) ( )   Based on the approximate vibration functions,which meet with the boundary conditions and symmetry of deflection vibration of arch,the simplified equations for calculating the lowest symmetrical vibration natunal frequency are derived by enengy method.When f/l≥0.2,the frequency results from the simplified method are nearly the same as from finite element method. Related Articles | Metrics

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Test Investigations of the Capacity of the Large Bored Pile SHI Ming-lei, JIAN Zheng-xiong, WU Kai, FU Guo-hua 2000, 19(1): 31-37.  Abstract ( )   PDF (289KB) ( )   The static load test for the large bored pile and the measurement of the pile shaft stress were presented in this paper.The behaviour of the friction-bored pile's capacity-settlement was analysed emphatically,and the ultimate values of the pile shaft friction resistance and the ultimate tip resistance were discussed thoroughly.The documentation gives guidance for future research and development of codes for large bored pile. Related Articles | Metrics

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Optimization Model and Algorithm about General Lay-out Plan of Key Highway Station-Yary System YAN Qi-peng 2000, 19(1): 38-42.  Abstract ( )   PDF (203KB) ( )   The characters of key highway station-yard are discussed in this paper.The optimization model of the general Lay-out plan about key highway station-yard is constructured.The method forming judgement matrix,the algorithm about the consistency and hierarchy ordering weights are put forward.The framework of program is given. Related Articles | Metrics

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Discussing Interchange Aesthetic (Ⅴ)——coordination of interchange and surroundings WU Guo-xiong, SUN Jia-si 2000, 19(1): 43-46.  Abstract ( )   PDF (200KB) ( )   This paper discusses the relations between interchange aesthetic and surroundings,and expounds the main points,emphasizing the method of the corrdination of interchange and surroundings.At last,the evaluation of coorclination is posed in order to make interchange and swrroundings be in perfect harmony. Related Articles | Metrics

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Mechanical Analysis on Geogrid-Reinforced Asphalt Concrete Pavement CAO Dong-wei, HAO Da-li, HAN Rui-min 2000, 19(1): 47-52.  Abstract ( )   PDF (251KB) ( )   Structural responses of Geogrid-Reinforced asphalt concrete pavement are analyzed in this paper based on principles of composite material mechanics and finite element method(FEM).The calculation about stress and displacement,with different load positions and different conditions of the base course,indicates the rational geogrid position in pavement structure,its anti-cracking effects and its reinforcement mechanism. Related Articles | Metrics

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Recognition and Arithmetic on General Relations between Ground Attributes Areas FENG Xiao, HE Zhao-yi, LIU Shan-hong 2000, 19(1): 53-57.  Abstract ( )   PDF (212KB) ( )   The concepts of ground attributive basic arithmetic and current main problems are introduced.The computer algorithms of recognition and arithmetic on general relations between attributive areas are put forward,by which the problems of multiple-hole-areas analysis are successfully resolved. Related Articles | Metrics

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Analysis on Plan for Disposition of Mixing Machines in Dian-Zhan Expressway's Pavement Engineering CHEN Chu-xuan, LIU Tao, DAN Shu-ying 2000, 19(1): 58-60.  Abstract ( )   PDF (127KB) ( )   Form an economic viewpoint,this paper analyses three plans for disposition of mixing machines which should be adopted in pavement engineering,giving considerations to features of Dian-Zhan Expressweay's pavement engineering we undertake.It also issues the principles and methods to choose mixing machines for the objective that the choice should be economically reasonable and technologyically well matched.The conclusion can supply references for similar projects. Related Articles | Metrics

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The study of High Side Slope Stability and Reasonable Support at Highway WU Heng-li, XU Ji-jiang 2000, 19(1): 61-66.  Abstract ( )   PDF (237KB) ( )   In this paper we described the study of high side slope stability and reasonable support at highway. Related Articles | Metrics

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Effect of the Interaction between Modifier and Asphalt on the Properties of Modified Asphalt YUAN Jian-an 2000, 19(1): 67-71,79.  Abstract ( )   PDF (227KB) ( )   This paper discusses the interaction mechanism between modifier and asphalt,and points out several kinds of factors that affect the properties of modified asphalt. Related Articles | Metrics

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Research on the Optimum Proportioning and Construction Method of Cement-Emulsified Bitumen Mixture ZHANG Si-yuan, WEI Jian-min 2000, 19(1): 72-75.  Abstract ( )   PDF (174KB) ( )   According to the material composing and the characteristics of strength of Cement-Emulsified Bituminous Mixture.The author has advanced the revised marshall test and the suit order of mix round.The optimum content of bitumen and rational content of cement are defined.This paper has also built up the construction method for cementemulsified bitumen mixture pavement. Related Articles | Metrics

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A New method to Build the Model of Highway on that of Digital Terrain Model WANG Hong 2000, 19(1): 76-79.  Abstract ( )   PDF (164KB) ( )   This paper utilizes the theory of Space Analysis.Geometry,and advances a new and effective method to build the model of highway on that of Digieal Terrain model,which makes it more integrated to combine the two models. Related Articles | Metrics

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The Judgement of the Quality of Municipal Engineering by Using Fuzzy Evaluation YU Gui hua, WU Guo xiong 2000, 19(1): 80-83,101.  Abstract ( )   PDF (193KB) ( )   There are many factors influencing the construction of municipal engineering.In order to judge the quality of construction and management,and to give reasonable bonus and forfeit,this paper uses fuzzy evaluation to judge the quality of municipal engineering,and so the judgement will be more reasonable and fair and the construction unit will be given fairly bonus and forfeit. Related Articles | Metrics

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Setting up and Testing the Theory Method of Counting Bridge Pier Clear Water Equilibrium Scouring Depth SHEN Bo 2000, 19(1): 84-87.  Abstract ( )   PDF (173KB) ( )   This paper,through ideal liquid circling bridge pier connected with local initial scouring experimental velocity data,has set up the bridge pier circling velocity theory counting method.And then according to the Bridge pier circling velocity this paper has built up the theory counting method of the clear water equilibrium scouring depth and tested with model experimental data. Related Articles | Metrics

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Fluvial Processes of Shoals in Upper Jingjiang Reach before and after Construction of Three Gorges Project in Yangtze River XIONG Zhi ping 2000, 19(1): 88-91.  Abstract ( )   PDF (170KB) ( )   Firstly,the general situation of the shoals in uppper Jingjiang Reach were described in this paper.The Fluvial processes of the sand bed shoal and the gravel bed shoal of the reach were discussed based on the Lujiahe waterway and the majiazui waterway.Finally,the change of the two kinds of shoals in upper Jingjiang were estimated after the construction of the project. Related Articles | Metrics

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Visualization Research on Anisotropy of Rock Mass in Rock Project——Taking the Slope Engineering of Permanent Shiplocks of the Three Gorges Project as an example CHEN Hong-kai, TANG Hong-mei 2000, 19(1): 92-97.  Abstract ( )   PDF (259KB) ( )   Anisotropy is one of the important problems in rock project,which controls generally all mechanical and hydraulic behaviors in rock mass.In this paper the authors discuss basic visualization of anisotropy of rock mass from the slope engineering of permanent shiplocks of the Three Gorges Project,Anisotropy of rock are shown in geostress,neotectonic stress field,macro- and micro-structure features of rock mass and parameters of rock mechanics and hydraulics.Variation of values and main directions of geostress along depth are obvious.Geometric features of rock structures in macro- and micro-scale are random with systematic rules. Related Articles | Metrics

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Research on Calculation of Critical Submerged Criterion for Broad-crested Weirs YU Hua-qian 2000, 19(1): 98-101.  Abstract ( )   PDF (168KB) ( )   Based upon the basic principle of hydraulics and the critical submerged theory presented,a critical submerged flow for broad-crested weirs is studied,and the theoretical formula of critical submerged criterion for broad-crested weirs which the results of computation coincide with the present experimental criterion is obtained in this paper. Related Articles | Metrics

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The Exactly Nonlinear Geometry Formular of Beam Element WU Wu 2000, 19(1): 102-103.  Abstract ( )   PDF (98KB) ( )   This paper presents the exactly nonlinear geometry formular of beam element,and can be refered for future referrence. Related Articles | Metrics

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The Importance of Developing Logistics Service Company WANG Shu-yun 2000, 19(1): 104-107.  Abstract ( )   PDF (164KB) ( )   This paper analyses the significance of developing logistics service company and the problems related but unsettled. Related Articles | Metrics

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The Global Existence for High-Dimensional Burgers-Type Nonlinear Parabolic Equations in Traffic Flows LI Jian-zhang 2000, 19(1): 108-112.  Abstract ( )   PDF (216KB) ( )   In this paper,the global existence for high-dimensional Burgers-type nonlinear parabolic equations ut-Δu=(n)∑(i=1)Ci(∂)/(∂xi)u1+αi(t,x) in traffic flows has been obtained for αi≥1 and small initial value. Related Articles | Metrics