Archive

22 June 1999, Volume 18 Issue 3 Previous Issue    Next Issue

---

For Selected:

Download Citations EndNote Ris BibTeX

Toggle Thumbnails

Select

Aerostatics Behaviors of Large-span Suspension Bridge with Advanced Composite Cables FANG Ming-shan, XIANG Hai-fan, XIAO Ru-cheng 1999, 18(3): 1-6.  Abstract ( )   PDF (234KB) ( )   In this paper, nonlinear aerostaitcs stability theory and presented program has been applied to analysis aerostatics behaviors of large-span suspension bridges with advanced composite main cables.Some important results have been obtained. Related Articles | Metrics

Select

Geometric Form Analysis of Suspension Bridge Free Cable LI Xiao-zhen, QIANG Shi-zhong 1999, 18(3): 7-13.  Abstract ( )   PDF (261KB) ( )   A new method, which is based on the force equilibrium condition and the geometrical compatibility condition of cable, according to the constant unstressed length of cable, is presented in this paper to determinate the geometric of suspension bridge free cable.Numerical examples with Humen suspension bridge are given to demonstrate the effectiveness and the validity of the proposed method. Related Articles | Metrics

Select

The Numerical Method for Studying the Interaction Vibration between Bridge and Vehicle SHAN De-shan, LI Qiao 1999, 18(3): 14-20.  Abstract ( )   PDF (259KB) ( )   The interaction vibration between bridge and vehicle is an important problem in bridges of highway and railway.The numerical methods now usually used need much more time to complete the analysis.With the aim of increasing the computation efficiency, a numerical method which is based on the nonlinear vibration theory is proposed to study the dynamics between vehicle and curved bridge in high-speed railway.The program BSNDS is composed to evaluate the method.The simulation proves that the method can decrease the computation time greatly then other models without losing accuracy. Related Articles | Metrics

Select

Research on Highway's Cross Section CAD Development PEI Da-ming, WANG Fu-jian 1999, 18(3): 21-25,41.  Abstract ( )   PDF (242KB) ( )   To counter the geometrical complexity of highway's cross section, the concise, flexible, united and universal geometrical definition model for highway's cross section is researched, then the development methods for the CAD software used for cross section's geometrical design is also studied to deal with a lot of actural design circumstances. Related Articles | Metrics

Select

BP Neural Network Based Highway Cross Section's Fill and Cut Information Obtaining Method and Its Applications PEI Da-ming, WANG Fu-jian 1999, 18(3): 26-29.  Abstract ( )   PDF (167KB) ( )   BP neural network based on highway cross section's fill and cut information obtaining method is researched.The approximate fill area Af and cut area Ac with different heights of fill or cut H at an arbitrary stake can be calculated quickly by the method, and the diagrams H~Af and H~Ac can be drawn on highway longitudinal profile drawing for better knowledge of the fill and cut distributions of the whole route or a section, which are very helpful to highway longitudinal profile design.The method is applied easily in highway CAD system to enhance the automation and intelligence of highway survey and design. Related Articles | Metrics

Select

Investigation and the Equations on the Length of Bridge Opening ZHOU Yu-li, WANG Ya-ling, LUO Na 1999, 18(3): 30-34.  Abstract ( )   PDF (179KB) ( )   According to investigation data of designing for bridge opening in China, in this paper the equations for estimating length of bridge opening have been established.The equations can be the reference for revising "Norm of Investigation and Design of Highway Engineering on Hydrology". Related Articles | Metrics

Select

The Wavelet-Fourier Analysis of Blasting Seismic Signal ZHAO Ming-jie, YE Xiao-ming, WU De-lun 1999, 18(3): 35-41.  Abstract ( )   PDF (288KB) ( )   The Wavelet-Fourier transformation is applied for to analyzing the time-frequency properties of blasting seismic signals in this paper.The blasting seismic signal was decomposed into muli-frequency channel signals, and the true frequency feature of the blasting seismic signal was gained after analyzing muli-frequency channel signals.The Wavelet-Fourier transformation method is an effective analyzing means for constituting velocity-frequency criteria. Related Articles | Metrics

Select

Regression Formulas of Displacement and Tensile Stress of Asphalt Pavements LI Chao-yang 1999, 18(3): 42-48,68.  Abstract ( )   PDF (293KB) ( )   To facilitate the design, teaching and research of asphalt pavements, the article founded the models of displacement and tensile stress of three-layer system by using separation of variables, analysis and synthesizer.Based on the analysis of common pavement structures and their equivalent conversion, the regression formulas of displacement and tensile stress are obtained successfully, furthermore the formulas applied in multi-layer system are checked.A great number of results of regression formulas show good accuracy for engineering application and theory research. Related Articles | Metrics

Select

Study on the Road Performance of CaO and Fly-ash Stabilizing Aggregate XU Jiang-ping, SHEN Ai-qin, ZHANG Deng-liang 1999, 18(3): 49-54.  Abstract ( )   PDF (231KB) ( )   In this paper, the road performance of CaO and Fly-Ash Stabilizing aggregate is discussed, in terms of strength, strength at low temperature, postponing shaping time, and cracking resistance. Related Articles | Metrics

Select

Research and Application of the Mechanical Construction System Theory of the Cement Concrete Pavement(Ⅱ)——Design and Evaluation of the System HU Jun-hong, ZHANG Hai-jun, NIE Chun-sheng 1999, 18(3): 55-61.  Abstract ( )   PDF (252KB) ( )   Based on the description of the motion law of the mechanical construction system using the mathematical model, this paper presents the standard methods and steps to design and evaluate the mechanical construction system of the cement concrete pavement.At the same time, it offers an example to evaluate the practice of Shen-Shan highway. Related Articles | Metrics

Select

Research and Application of the Mechanical Construction System Theory of the Cement Concrete Pavement(Ⅲ)——Dynamic Optimizing the System ZHANG Hai-jun, NIE Chun-sheng, HU Jun-hong 1999, 18(3): 62-67.  Abstract ( )   PDF (222KB) ( )   By analysing the intrinsic factor of the varing state of mechanical construction system and conbining the experience of 106 highway, this paper presents the methods and program of the dynamic optimizing the system at the terms of varing work condition. Related Articles | Metrics

Select

Monte-carlo Method in Probability Analysis of Settlement ZHANG Zhi 1999, 18(3): 69-74.  Abstract ( )   PDF (223KB) ( )   In this paper, Monte-carlo method is applied in the probability analysis of settlement for the first time.Some specific problem in this method are discussed, and the settlement probability results are also analysed.This is meaningful for the probability analysis problem of settlement and the application of Monte-carlo method in other engineering. Related Articles | Metrics

Select

Global Positioning System (GPS) Control Survey for Fengshun Lianhua Mountain Tunnel Engineering CHEN Ke-zhan, QU Guo-wan 1999, 18(3): 75-80.  Abstract ( )   PDF (224KB) ( )   Fengshun Lianhua Mountain tunnel engineering is the key point of 206 national highway alteration.The founded construction survey net by GPS, not only has exact precision, but economize cost improve work efficiency, and lighten labor intensity.The advantage of GPS technology has been proved by practice.It offered useful practical experience for control measure of long great tunnel engineering in the future. Related Articles | Metrics

Select

Design and Analysis of Geosynthetic Reinforced Flyash Retaining Wall SHI Ming-lei, SHAO Li, YAO Dai-lu 1999, 18(3): 81-89.  Abstract ( )   PDF (333KB) ( )   The approach for the design and the beharvioural mechanisms of reinforced soil structures are presented in this paper.The Limit State Approach and aspects of partial factors for the design of geosynthetic reinforced soil structures are described emphatically.Application of the method for the design of a certain wall of flyash reinforced by geosynthetics, and the characteristic values and partial factors are discussed.This documentation is directly towards researchers and practionaires, and gives guidance for future research and development of codes for reinforced soil wall. Related Articles | Metrics

Select

The Light-retaining Structures for Controlling Damaged Highway Slope HUANG Xiao-hua 1999, 18(3): 90-94,109.  Abstract ( )   PDF (237KB) ( )   This paper introduces four typical light-retaining structures.They are frame girder with prestressed anchor ropes, antislide pile with preslressed anchor ropes, anchored nelwork with jetting concrete and retaining wall with root piles.These structures are successfully applied to the national highway No. 107 in Guangdong Province. Related Articles | Metrics

Select

Fuzzy Evaluation on Safety Quality of Highway Culvert SHEN Bo 1999, 18(3): 95-99.  Abstract ( )   PDF (185KB) ( )   This paper sets up highway culvert safety quality fuzzy evaluation's model, and use it to evaluate highway culvert safety quality. Related Articles | Metrics

Select

Measurement and Analysis for Drainage Effectiveness of Upward and Plumb Drainage Hole at Permanent Shiplockes in the Three-Gorge Project XU Guang-xiang 1999, 18(3): 100-104.  Abstract ( )   PDF (195KB) ( )   Drainae discharge of upward and plumb drainage hole at Permanent Shiplockes in the Three-Gorge Project was measured in situ.Result shows that drainage effectiveness of upward hole has an obvious advantage over that of plumb hole.We have analyzed discontinuities in drainage gallery and numbers that drainasge hole pass through discontinuities in terms of theory.Theroretical result is the same as the measured result in situ. Related Articles | Metrics

Select

The Testing Research of River Bank-Protecting Project for Gan Lanba River Reach of Lanchang-Mekon River TUO Yao, XU Guang-xiang, SU Yu-qing 1999, 18(3): 105-109.  Abstract ( )   PDF (204KB) ( )   The paper is based on detailed analysis of the cause for the cave of Gan Lanba river bank of Lanchang-Mekon River.It is suggested that the control of flow direction median during the low water level period plays a leading role in the river bank.Training considering navigation, flood proof and bank paving comprehensively, through Model-testing research various constructing methods adopted according to this regulation is proved to be practicable. Related Articles | Metrics

Select

The Interpolation Perturbation Method for Solving A Class of Weakly Nonlinear Differential Equations YUAN Yi-wu, LI-Yong chun, XU Ji-jiang 1999, 18(3): 110-114.  Abstract ( )   PDF (178KB) ( )   In this paper, the authors study the initial value problems of a class of weakly nonlinear differential equation.The first and the second order approximate solutions are obtained.Their accuracies are high and the more the approximate order is high, the more the accuracy is high.If the regular perturbation method is used to solve the same problems, then, when the independent variable is big, so is the error of the solution. Related Articles | Metrics

Select

Condition Monitoring Analysis and Diagnosis System of Oil Pumping Unit TANG Bao-ping, ZHENG Zhao-yun, LI Bi-rong, WEN Dai-gang 1999, 18(3): 115-120.  Abstract ( )   PDF (489KB) ( )   A condition monitoring, analysis and diagnosis system of oil pumping unit is introduced.The purpose of developing this system is to grasp the running condition of oil pumping unit in good time, and to provide suggestion for preventive maintenance.The paper introduces the composition of system and the principles of measurement.The design of software and its application are discussed.The software based on Windows-NT network platform has a friendly graphic user interface, in which many functions such as dynamic data display, automatic accidents alarm, timed report print, field special knowledge help and fault diagnosis are successfully implemented. Related Articles | Metrics

Select

Study on the Technology of Oil and Water Separater Device CAO Yuan-wen 1999, 18(3): 121-123,128.  Abstract ( )   PDF (160KB) ( )   In this paper as to the intrinsic character of condensation water, construct form and new type separate method of installation suitable to condensation water treatment is found through theoretical and technological anglysis, by the proof of the centrifugal force separate、superfilter、greater drop separate as a whole optimum combination. Related Articles | Metrics

Select

The Social Efficiency of Comprehensive Utilization items of Resource by Gradation Analysis LIAO Feng-hua 1999, 18(3): 124-128.  Abstract ( )   PDF (178KB) ( )   Resource is the material basis of social production.With the development of the society, the reaquest for resource will increase.But resource is limited so that comprehensive utilization of resource has become one of the major subjects now.The comprehensive utilization items of the resource have remarkable social efficiency, which can make it possible that each feasible scheme of items has the quantitative basis in selection, so that policymakets can select the best scheme. Related Articles | Metrics

Select

The Existence of Postitive Solutions for Elliptic Equation with Singular Nonlinearity and Singular Boundary Value Problem LI Jian-zhang 1999, 18(3): 129-134.  Abstract ( )   PDF (221KB) ( )   In this paper, by the method of subsolutions and supersolutions, for smooth boundary domain Ω of Rn, the existence of positive solutions for singular nonlinear elliptic boundary value problem Δu+f(x, u, Du)=0, u|∂Ω=0, has been obtained.By the transformation u=v-p(p>2/(q-1)), the existence of positive solutions for Δv=Cvq(C>0, q>1), v|∂Ω=+∞, has also been obtained. Related Articles | Metrics

Select

A Study on the Directions of Management and Service for the Books-information of Jiaotong Colleges and Universities in the Knowledge Economy Times LI Xiao-ling 1999, 18(3): 135-138.  Abstract ( )   PDF (151KB) ( )   The general concept of the knowledge economy is firstly introduced.Then, the directions of management and service for the books-information of Jiaotong colleges and universities are systematically investigated.The open library must be put into practice, and the computer network control should be established to enjoy in common resources.To fitin with the needs of knowledge economy, the reform step of Jiaotong colleges and universities should be quicken around the centre of information service. Related Articles | Metrics