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20 February 1999, Volume 18 Issue 1 Previous Issue    Next Issue

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Study on Prognostic Model and Parameter of Highway Traffic Volume Huo Yamin 1999, 18(1): 1-4,22.  Abstract ( )   PDF (189KB) ( )   This paper studies mainly the prognostic model which causes the growth of economy, coefficient of elasticity and the demarcate method of transfer rate in the forecast of highway traffic volume.In the prognostic model which causes the growth of economy, besides dealing with the common time and distance model, it puts forward the adoption of analogous model which is more reasonable when the shortening of the time and space distance of the project is not obvious.As to the demarcate method of transfer rate, it advances the forward and converse quadratic transfer curve and discusses the choosing of the index of the coefficient of elasticity, which provides theoretical principles for calculating the traffic flow accurately. Related Articles | Metrics

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Project Conceit to Bid for Structural Design of Egongyan Yangtze River Bridge in Chongqing Wang Fumin, Han Daojun, Ou Mingxing 1999, 18(1): 5-11.  Abstract ( )   PDF (257KB) ( )   The Egongyan Yangtze River Bridge in Chongqing is the 4th highway bridge to connect Nanping with Yangjiaping in the city.In the light of symbol building and landscape, the suspension bridge is chosen This paper presents the features of the project, its design principle, the choosing of the type and difficulty in constructing 3 span suspension bridge on the site, for isosporous reference. Related Articles | Metrics

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Discussing Interchange Aesthetics (Ⅲ)-interchange alignment aesthetics Wu Guoxiong, Sun Jiasi 1999, 18(1): 12-16.  Abstract ( )   PDF (187KB) ( )   Alignment is the skeldton and outline, and its continuity, smoothness, flow ability and coordination are the key to interchange aesthetics.Interchange alignment is made up of horizontal alignment, vertical alignment and space alignment.According to the characteristics of interchange alignment aesthetics, this paper summarizes the content and demand of alignment aesthetics from horizontal, vertical, and space and sets forth the design method which can meet alignment aesthetics, in order to put forward good geometry alignment for traffic. Related Articles | Metrics

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Establishment of the Fatigue Damage Equation of the Concrete Material Zhao Yongli, Sun Wei 1999, 18(1): 17-22.  Abstract ( )   PDF (225KB) ( )   Damage mechanics has been a new trend of solid mechanics since the sixties and seventies.With the basic concept of damage mechanics, the fatigue process of concrete is theoretically analyzed.The concept of actual stress proportion is proposed, and the fluctuation law of the actual stress during the fatigue process is discussed.From this, the fatigue damage variable is defined, and the fatigue damage equation is obtained based on the fatigue lifetime equation of the concrete materials.Furthermore, the equation that can predicts the strength excess of the concrete materials is also obtained. Related Articles | Metrics

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The Theory of Composite Box-Beam Wu Zulie, Zhang Peiyuan 1999, 18(1): 23-27,32.  Abstract ( )   PDF (215KB) ( )   In this paper, we established the general theory of composite box-beam under the combinational deformation of tension, compression, bending and torsion, discussed the equivalent constitutive equations, and gave the equivalent elastic coefficients about two kinds of typical thin-walled beams. Related Articles | Metrics

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Dynamic Unconfined Compressive Characteristics of Cement-Soil Wang Xudong, Guo Dajin, Sha Aimin 1999, 18(1): 28-32.  Abstract ( )   PDF (197KB) ( )   Based on dynamic single-axle compressive test, the relations between load and deformation of the cement-soil under dynamic loading are analyzed in this paper.Nonlinear vibration characteristics of cement-soil are investigated, and the vibration characteristic model with hard spring components are proposed. Related Articles | Metrics

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Industrial Location Superiority of Transport Corridor in Transaction Cost Huang Chengfeng 1999, 18(1): 33-39.  Abstract ( )   PDF (248KB) ( )   On analysis of division and peculiarity of transaction cost of transport, this paper brings to light its effect on the establishment of industrial location superiority and supply structure and development of transport corridor. Related Articles | Metrics

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Research on Evaluation of the Efficiency of TDM Zhu Shunying, Wang Wei, Wang Yi, Yang Tao 1999, 18(1): 40-45,54.  Abstract ( )   PDF (243KB) ( )   The efficiency evaluation of TDM is one of the important steps to carry out TDM projection.It is a far-reaching significance to the accumulation of TDM in experience and making transportation plan.This paper briefly introduced the research trend and purposed to classify it into three kinds.We placed a full discussion on evaluation of the first type, and briefly discussed the evaluation methods of the second type, and finally numerated three evaluation parameters of the third type. Related Articles | Metrics

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Study of Electronic Automation Charging System without Car Stopping on the Road and Bridge Chen Alin, Yuan Congwu 1999, 18(1): 46-49.  Abstract ( )   PDF (157KB) ( )   The electronic automation charging system without car stopping is a part of the modernization of highway traffic.This paper presents the research result of the electronic automation charging system without car stopping on the road and bridge. Related Articles | Metrics

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The Prediction of the Present Quantity of Vehicles and the Needs of Maintenance in Chongqing Lin Haitao, Shao Yiming, Zheng Yu, Liang Xiongyao 1999, 18(1): 50-54.  Abstract ( )   PDF (180KB) ( )   This paper analyses the methods of the prediction of the present quantity of vehicles and the needs of maintenance. The prediction has been made through analysing and synthesizing the past original data, which provides with the scientific foundation for the development and scheme-making of the modern vehicle maintenance business in Chongqing. Related Articles | Metrics

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Estimation of Equivalent Standard Axleload and Error Analysis Wei Lianyu, Li Qiaoru 1999, 18(1): 55-60.  Abstract ( )   PDF (217KB) ( )   By using the measured parameters, such as initial mixed traffic volume, axleload type, axleload distribution, etc., this paper introduces the method of evaluating the ESAL of mixed traffic during road expectancy life.Also, according to the error analysis and error transfer theory, by using the errors of the statistical measured parameters above, the synthetic error of ESAL is analyzed.The result obtained can be used for analysis of road reliability and road design. Related Articles | Metrics

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Mathematical Method of Geometrical Component Analysis of Member Systems Yang Decan, Lin Wei 1999, 18(1): 61-67.  Abstract ( )   PDF (241KB) ( )   As to structural engineers who intend to choose the forms of structures, they must at first explore the geometrical component of systems, and then consider other factors.However, so far the normal analysis methods of geometrical component can not yet analyze all sorts of structures.The mathematical method of geometrical component analysis of member systems is proposed in this paper.This method can analyze the geometrical component of all sorts of structures, especially the complex structures.It clears away the obstacles in use of complex structures in actual engineering and expands the range that limits the development of complex structures. Related Articles | Metrics

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Numerical Modeling of Channel Flow Variations Due to Flood Embankment Works Zhou Huajun 1999, 18(1): 68-74,112.  Abstract ( )   PDF (288KB) ( )   Variations of flow condition and their influences on navigation and flood control, caused by the flood embankment in Beibei reach of the Jialing river, are investigated by means of quasi-two dimensional numerical model. Changes in water surface its gradient, flow velocity in mainstream thread, and flow velocity in upbound sailing line are analysed.A reasonable and feasible project alternative are proposed. Related Articles | Metrics

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The Present Hydraulic Study Development and Engineering Applied Experience on Culvert Compound Port in Ship Lock Liu Pingchang 1999, 18(1): 75-85.  Abstract ( )   PDF (397KB) ( )   In this paper, the content, the methods and the development on Culvert Compound port in ship lock was described briefly.The engineering applied experience was introduced, analysed principal problems and the research tendency in this field in future. Related Articles | Metrics

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Numerical Analysis of Utilizable Hydraulic Head for Downstream River Course at Wu Jia Jie Power Station Yin Chongqing, Miao Jilun, Zhang Xujin 1999, 18(1): 86-92.  Abstract ( )   PDF (261KB) ( )   Based on energy equation, new scheme of dredging and training for downstream river course at Wu Jia jie power station is calculated.In case of a variety of schemes for excavated trough, the relation between increment of utilizable hydraulic head and engineering quantity of downstream river course at the power station is studied.Optimum utilizable hydraulic head and corresponded engineering quantity of downstream river course are analyzed.Evolution and stability of downstream river course are expounded as well. Related Articles | Metrics

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Upper Engineering Effect on Rate of Flow Rate in Braided River Yang Shengfa 1999, 18(1): 93-98.  Abstract ( )   PDF (223KB) ( )   Main factors effecting on flow rate in braided river is gardient of anabranch, area of water, roughness and velocity.And the general factors effecting on flow rate in braided river is angle of anabrach, flow rate and upper engineering.Based on the typical model investigation of hydrodynamical, this paper analyses upper engineering effect on rate of flow rate in braided river. Related Articles | Metrics

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The Estimation of Flood Detention Rate at the Sandaoguai Gorge Range of Lan Changmekon River Tuo Yao 1999, 18(1): 99-103.  Abstract ( )   PDF (194KB) ( )   The reason for the hinder of navigation manipulating by the Manting water way of lan Chang-Mekon River is mainly because of the dammed water and flood detention effect due to the exist of san-dao-guai gorge range in the period of flood water.Based on the relationship between roughness and flow rate and the relationship between bed slope and water level.we calculated the different flowing abilities of Manting water way at various water levels.And obtained the flood detention rate of san-dao-guei gorge range at different water levels. Related Articles | Metrics

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Application of Random Analysis on Stability of Reinforced Soil Slopes Wu Wenxue, Ouyang Zhongchun 1999, 18(1): 104-112.  Abstract ( )   PDF (310KB) ( )   A limit state equation on random analysis of the stability of reinforced soil slopes and a solution of the equation is presented.By case study, the comparison of definite analysis against random analysis of reinforced soil slopes is discussed, together with the regularity and the effect of factors on its random analysis. Related Articles | Metrics

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Behaviours of Stability and Settlement of Embankment in Mountainous land with Different Regions and Filling Rates Deng Weidong 1999, 18(1): 113-120.  Abstract ( )   PDF (314KB) ( )   Using the FEM program with Duncan nonlinear elastic model, this paper analyses the behaviours of stability and settlement of embankment in mountainous land with different treatment regions and filling rates, and finally, the author analyses the settlement behaviours of three embankment in longitudinal and transverse direction. Related Articles | Metrics

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Stability Analysis of Slopes of Road Base and Associated Graphic Processing Technique Lan Bo, Wang Guohua 1999, 18(1): 121-126.  Abstract ( )   PDF (240KB) ( )   In this paper, a program is composed to analyze the stability of the slope of road base by use of the Bishop's simplified method of slice.The calculation result and the process which the most dangerous sliding surface is studied are showed on drawing by means of AutoCAD and professional data processing software.The result shows that the program and the associated graphic processing are reliable and practical in road designing. Related Articles | Metrics

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Information Research on Normal Pool Level Demonstration of Three Gorges Engineering Li Baodi 1999, 18(1): 127-130.  Abstract ( )   PDF (152KB) ( )   Several decades were expended in demonstnating the normae pool level of Three Gorges Dam Based on information research, the allthor discusses importance.Complication and scientic valne of the demonstration in this paper. Related Articles | Metrics

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Nonempty Intersection Theorems with Applications in H-Spaces Wang Dacheng 1999, 18(1): 131-134.  Abstract ( )   PDF (160KB) ( )   In this paper, some new types of monempty intersection theorems are proved in H-spaces.Also applications, some vector-valued minimax theorems and fixed point theorems are obtained, and the equilibrium problems for abstract economies are studied.The results presented in this paper contain the corresponding results in [1-3] as their special cases. Related Articles | Metrics