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22 June 1987, Volume 6 Issue 3 Previous Issue    Next Issue

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The Analytical And Experimental Work of GRP Cable-Stayed Pedestrian Bridge Tang Guodong 1987, 6(3): 1-12.  Abstract ( )   PDF (746KB) ( )   The GRP, glass fiber-reinforced plastic, cable-stayed pedestrian bridge with a maximum span of 27 meters was completed in last September. The Properties of this kind of material, the future and signidicance of the GRP bridge are researched and described in this paper based on the author's analytical and experimental work. Related Articles | Metrics

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Constitutive Relation And Residual Stress of Composite Laminates in the Linear Hygrothermal Field Wang Shijie, Zhang Ruixian 1987, 6(3): 13-22.  Abstract ( )   PDF (590KB) ( )   This paper investigates the constitutive equations and residual stress of composite laminates in the steady linear hygrothermal field. Formulas of internal force-strain, residual strain and residual stress for the laminates-has been obtained under the influence of temperature and humidity. Related Articles | Metrics

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The Strength Properties And the Fatigue Safety Factor of Soil-Cement Ling Tianqing 1987, 6(3): 23-31.  Abstract ( )   PDF (635KB) ( )   The statistical relations between compressive and tensile strengths of soil-cement is analyzed in this paper. And the law of bending strain, radius of curvature and the elasticity modulus of soil-cement under repeated loading change with number of load applications is studied. Also the law of fatigue destruction of soil-cement is summed up. Related Articles | Metrics

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Crack Control in Reinforced Concrete Members Ni Zonglian 1987, 6(3): 32-41.  Abstract ( )   PDF (843KB) ( )   This paper gives a general review on the theories about cracks in reinforced concrete members and the methods of crack control. The author also states briefly the evaluations on the methods. Related Articles | Metrics

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The Analysis of Shear Lag in Prestressed Concrete Truss Bridge Deck Hong Guozhi 1987, 6(3): 42-51.  Abstract ( )   PDF (569KB) ( )   This paper presents a simple way of calculation shear lag in prestressed concrete truss bridge deck which is subjected to horzontal axial forces, vertical force, and moments from diagonal web members and external loads. Governing differential equation for shear lag is obtained by variational approach under the combined action of horizontal force and vertical force, and the stress of considerating shear lag is obtained on linear condition by means of superposition principle. A calculation example is illustrated and compared with test result. Related Articles | Metrics

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The Mechanics Model of Semi-Bind interface And Its Application in Calculation of Rigid Pavement Wang Kai 1987, 6(3): 57-64.  Abstract ( )   PDF (601KB) ( )   In this paper, a new mechanics model and corresponding formulae for computing the semi-bind interface is proposed on the basis of analysis of the distribution law of shear stress on the interface at three binding states: fully continuous, fully smooth, and semi-bind. By means of a developed computer program, the calculation and analysis of single- and two-course concrete pavements are given respectively. Related Articles | Metrics

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A Solution of Stress Boundary Value Problem in A Half-Infinite Elastic Solid by Hankel Transformation Tan Junyu, Luo Shiyu 1987, 6(3): 65-76.  Abstract ( )   PDF (605KB) ( )   In this paper, the stress boundary value problem of axis symmetry of a half-infinite elastical solid under the action of circular line loads and circular, or ring,distributed loads on the boundary plane is studied. Using Hankel transformation, formulae of all stresses and displacements at an arbitrary point in the half-infinite solid are given in the form of the complete elliptic integrals. Particularly, on z=0 plane and symmetric axis r=0, all stresses and displacements can be obtained. Finally, operations and results of several integrals are also given, and some cases studied in the paper are discussed. Related Articles | Metrics

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Problem in Design of A Great Quantity of Detonate in Slope Topography of Highway Engineering Xiong Jigao 1987, 6(3): 77-81.  Abstract ( )   PDF (384KB) ( )   To analyze the influence of errors of the minimun resistance line w and the ground falling gradient a to a great quantity of detonate in highway construction, and the problem in design of a great quantity of detonate in the slope topogtaphy, the author proposes a design method that can be used to make a more reasonable, more economical and safer great quantity of detonate in the slope topography. Related Articles | Metrics

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Research on Application of Waste Rubber Powder in High-Type Road Fan Tongjiang 1987, 6(3): 82-93.  Abstract ( )   PDF (898KB) ( )   This paper concerns the evaluation of the stability of asphalt mixtures which are added to a appropriate amount of waste rubber powder under the high temperature. Based on a lot of data obtained from the experiment, the effective properties of the waste rubber powder have been particularly explained to the stability of common bitumen mixtures under the high temperature. Also the methods of preparing and testing asphalt mixtures containing the waste rubber powder is stated. Related Articles | Metrics

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Determination of Vehicle-Equivalence Han Zi 1987, 6(3): 94-102.  Abstract ( )   PDF (500KB) ( )   It is a very important for a researcher how to determine vehicle-equivalence in calculating the capacity of a signalized junction by vehicle-equivalence method. The type of vehicles, the movements and the vehicle order affect vehicle-equivalence. In previous researches, the influence of the vehicle order have not been taken into account. In this paper, the author begin with headway by probability method, and deduce some formulae and conclusions in the end. Related Articles | Metrics

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The Design Calculation of Shear Resistance of Reinforced Concrete Beams Yuan Guogan 1987, 6(3): 106-114.  Abstract ( )   PDF (545KB) ( )   This paper gives the notes on the basic design formulae of shear resistance used in the Chinese "Design Code of Reinforced And Prestressed Concrete for Highway Bridges" (JTJ-023-85). And an illustrative design example is also included. Related Articles | Metrics

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A Note on the Vandermonde Determinant Wang Bin 1987, 6(3): 115-116.  Abstract ( )   PDF (115KB) ( )   Using Vandermonde determinant, we can prove the following theorem: Assume z1, z2, …, zn∈C satisfying: z1+z2+…+zn=0,z12+z22+…+zn2=0,…z1n+z2n+…+znn=0, then z1=z2=…=zn=0, Where C is the field of complex number. Related Articles | Metrics

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Some Suggestions for the Technical English Course Zhou Sniping 1987, 6(3): 117-120.  Abstract ( )   PDF (347KB) ( )   Some suggestions for technical English course in dept. of highway and bridge are developed in this report. Related Articles | Metrics