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24 June 1996, Volume 15 Issue 3 Previous Issue    Next Issue

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Calculation of Stream Drag of the Flatbridge's Surface during the Flood Yang Bin, Zheng Yingong, Wu Wu, Xiao Shengxie 1996, 15(3): 1-4,10.  Abstract ( )   PDF (308KB) ( )   In this paper, calculation equation of stream drag of the flat bridge's surface during the flood is derived by friction drag calcularion equation of plane wall flow and shape drag calculation method of 2-dimensions rectangle cylinder, ran don characteristic and numeral stativstics feature of stream drag are discussed, and instantaneous maxium value of strearn drag of the flat bridge's surface is got. Related Articles | Metrics

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Anti-Cracking Shear Calculation of Inclined Section of Partially Prestressed Concrete Beams with Tendons Zhao Canhui, Gong Shanglong, Chen Sitian, Jiang Ringzhang 1996, 15(3): 5-10.  Abstract ( )   PDF (346KB) ( )   Based on the test result of 35 boams this paper analyses the influence of the degree of prestress and shear span-depthratio on the anti-cracking capacity of inclined section of beams.on the hasis of the analysis of theory and stUdy of test,a formula for the anti-cracking shaer of P.P.C beam with unbended tendons is proposed, simple and aucurate. Related Articles | Metrics

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The Principle of Setting up Expansion Joint Construction of Expansion Joint of Roller competed Concrete Pavement with Asphalt Concrete Overlay Yu Jianrong, Chen Rongsheng 1996, 15(3): 11-17.  Abstract ( )   PDF (437KB) ( )   This peper analyst the expanding and contracting processes of roller compacted concrete pavement with asphalt concrete overlay. the concept of in ihahve tharmal press temperature,effective thermal press temperature and the average highest temperature in the Plate. haed on the analysis results of thermal press deformahon and thermal stress,the principle of setting up expansion joint of RCCP with asphalt concrete overlay is derived. A formula of evaluahng the width of expansion joint is given.The construction of expennion joint of RCCP with asphalt concrete overlay is proposed. Related Articles | Metrics

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Grading Studies on the Granular Material He Zhaoyi, Huang Wei, Tan Changqing 1996, 15(3): 18-22.  Abstract ( )   PDF (307KB) ( )   In this paper,the maximum dry density, optimum moistUre content and the volume of CBR of different graded granular material are studied.Besides the grading type of the granular material, the maximum grain size,5 mm and 0. 074 mm possing content of the material are important which affect their strength. Related Articles | Metrics

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About the Definiton of Degree of Time-Space Saturation in the Network of Urban Road and Its Practical Calculation Formula in Peak Hour Zhou Xizhao, Yang Peikun, Yu Chaoming 1996, 15(3): 23-29.  Abstract ( )   PDF (408KB) ( )   In this paper, we give the concept of degree of rime-space saturaton and think this concept is a development of degree of traditional saturation, then we study car-following mcxlel in peak hour in urban road, at last we obtain the calculation formula of degree of time-space saturation in peak hour in the network of urban road. Related Articles | Metrics

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Traffic Parameters Analysis on Flexible Pavement Shuai Xiangping, Huang Xiaoming 1996, 15(3): 30-35.  Abstract ( )   PDF (363KB) ( )   On the basis of the investigations and measures of traffic Parameters,the distribution of total equivalent standardaxle loads over the pavement design pened are derived firstly. then the standard deviahon and variability are obtained.effects of traffic parameters to cavement depth design are analyzed. The results presented in thes peper are useful to fleasble pavement design haed on the reliability principles. Related Articles | Metrics

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Analysis on Dmlt Span of Cable-Stayed Bridges Wu Xiaoguang 1996, 15(3): 36-38.  Abstract ( )   PDF (175KB) ( )   In this paper, according to bridges shap, structual factor, consruction material etc.,limit span of cable-stayed bridges is analysed in the category of technique. Related Articles | Metrics

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Research of Theory and Approach on the Previous Economic Evaluation of Highway Project Hong Wei, Huang Daan 1996, 15(3): 39-47.  Abstract ( )   PDF (589KB) ( )   This paper discusses deeply.the concepts, principles,methods and steps in economic evaluation of highway project,points out the existing problem about evaluation theory and practice,proposes the relative way of thinking,It has certain reference value for development the feasibility research of the highway project. Related Articles | Metrics

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Micro-Features and Formation studies on Creep Debris Flow Chen Hongkai, Li Jijun, He Bin 1996, 15(3): 48-54.  Abstract ( )   PDF (1478KB) ( )   This paper expounds in detail micro-features on creep debris flow taken from Huarna beside 212-road in electron microscope. The analytical results identifies that microscope textures includ mixed mass-hold texture, partical mass-hold texture, massive texture and screening texture, and microscropic structures include microslide structure, microl and slide structure,tumbling structure, microbedding siructure,microscraping giooves,crack structures, by-flow structure and coherentmass feature etc.in advance,creep debris flow is a catastrophic geomorphologic process between landslide and general dehos flow. Related Articles | Metrics

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Evaluation Analysis on Highway Envronmental Landscape Wang Hong 1996, 15(3): 55-58,64.  Abstract ( )   PDF (325KB) ( )   Landscape sensitivity is a measure of landscape around road which noted by persons. Because there is no united and objective quantitative criterion before, in this paper, landscape sensitivity is suggested a basic criterion of route environ mental landscape evaluation and design, and principle and method of landscape evaluation are also studied. In addition to this, related mathematic models are also built. Related Articles | Metrics

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Briefly Discussing on the Management of the “Four-self” Highway Engineering Shen Qiming 1996, 15(3): 59-64.  Abstract ( )   PDF (420KB) ( )   This poper Briefly discusses the meaning of the "Four-self" highway engineering,it's characteristics and how to do well in the management and constructions and the usage of the "Four-self" highway engineering. Related Articles | Metrics

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The Modification on Modulus Formula of Sand's Fineness Tian Wenyu 1996, 15(3): 65-66,71.  Abstract ( )   PDF (183KB) ( )   Sand's fineness will influence the properties of concrete.This paper provides a critical review on the developmsnt of sand's fineness modulus formula and presents a modified formula which more accurately inaicates sand's fineness. Related Articles | Metrics

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The Water Rasources Synthetic Utilization and Shipping Development of Sichuan Huang Guocai, Chen Dezhang 1996, 15(3): 67-71.  Abstract ( )   PDF (374KB) ( )   In this paper, the characterietics of water resources and river system distribution of sichuan are analysed and waterresources synthetic utilization and shipping deaelopment of this region are proposed. Related Articles | Metrics

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A Method Determining the Worst Stage of Rapids Xu Guangxiang, Deng Chuanwei, Zhou Zhenglu 1996, 15(3): 72-75.  Abstract ( )   PDF (237KB) ( )   Because maximum velocity V and maximum slope I don't occur in the same date,the worst stage of rapids is very difficult to determine.This poper provides a method determining the worst stage for rapids according to synthetical index V2I reflecting navigation resistance of shapping.the results of calculation about yangiiaeqi rapids in wujiang river shows this method represent practice. Related Articles | Metrics

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Several Problems on Navigation Lock of Water Control Project in the Cut-off River Luo Jialing, Chen Mingdong, Liu Yiahui 1996, 15(3): 76-84.  Abstract ( )   PDF (556KB) ( )   This paper raises the principal problems existed in navigation lock in cut-off River Ejigineering projects, in the light of Dong Xiguan project.and presents corresponding improving measures based on hydraulic model test and navgation ship model test, an important reference for design and building of similar engineering projects will be given in the paper. Related Articles | Metrics

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The Study on the Characteristics of Wave Generator System in 70 m Water Flume Wu Wu 1996, 15(3): 85-91.  Abstract ( )   PDF (408KB) ( )   The repeataion, stability and uniform of water generated by the wave generator system in a wave flume which is 70 m long have been studied in this paper, The maximum wave height for different water depths and wave periods have been obtained.It shows that present results may be used for further application and development on this wavegeneretor system. Related Articles | Metrics

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The Numerical Simulation of Berthing Velocity of Inland Fleet Yang Chenyu, Peng Zaipin 1996, 15(3): 92-102.  Abstract ( )   PDF (642KB) ( )   Based on the field data of berthing velocity for 2 kinds typical inland fleets (1500 t and 2000 t),the berthing velocities have been numerically simulation by using of Mime Carlor method in this peper.After the statistical tests, it shows that the maximum values of the berthing velocity follow a Gummer distribution, and the probability curies of ide efficacy for the means of maximum values are also obtained. obtained The present results have been compared with the ones determined by specification of Harbor Engineering,China and othar ones as well. Related Articles | Metrics

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Preliminary Analysis on the Loss of Stabilization and the Slide on the Western Main Dam of the Grey Site of Mawan Power Plant Wang Zhenggen 1996, 15(3): 103-109.  Abstract ( )   PDF (413KB) ( )   In this peper,the method of the buildina dam on the soft foundation near seaboch is briefly intreducted. If the loadlug is too fast in the construction stage, the dam dody slide is easily cause. The method of the correct loading of the dam body can be defined through the oborvation and analyais of the settlement on the degree of consolidation. Related Articles | Metrics

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An Application of a Nonlinear Differential Equation in Physics Zou Changwen 1996, 15(3): 110-119.  Abstract ( )   PDF (541KB) ( )   In this peper,an extensive numerical inveshgahon of the classical equation of mtoion of the simple pendulum with viscous damping driven by a periodic external force x"(t)+rx'(t)+bsin(x)=k1cos(t) is reported. Chaotic solutionsas function of the damping conestant and amplitude are found. our motive for this study is to predict quanhtativiy the chaotic behaviours of bend crystal channel under the action of periodic field. Related Articles | Metrics

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Advantages of Diesel Engine in the Use of Fuels Duan Tailal 1996, 15(3): 120-125.  Abstract ( )   PDF (320KB) ( )   In this Paper, the conclusion got from the practics and theory, proves that diesel engine is surperior to gasolijce englue in the hands of saving fuels. Related Articles | Metrics

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Approaches for rainfall to effect on Catashophlc Geologic Processes——Taking landslides and debris flows in sichuan bain and regions near the basin as an example Xiao Hanzhong 1996, 15(3): 126-130.  Abstract ( )   PDF (346KB) ( )   Taking landslides and debris flows in sichuan basin and regions near the boin as an example.it is opproached for rain tall to effect on catastrophic geollgic processes in this paper, i. e. earlier raintall is an ample condition for the processes to develope, and rainfall tenjaty is a necessary conditions for the processes to develope. Related Articles | Metrics