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20 February 1989, Volume 8 Issue 1 Previous Issue    Next Issue

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The Research on the Examination of Load Carrying Capacity of Old Bridges by Vehicular Load Test Zou Lijin, Wang Jieke 1989, 8(1): 1-12.  Abstract ( )   PDF (774KB) ( )   This paper describes the static and dynamic test of the three reinforced concrete simply supported T-beam bridges by vehicular load test. The dynamic methods can be used to measure the bridge coefficient of lateral distribution and vertical deflection, etc. To show the static results. in the paper, the impact coefficient of the live load of the running vehicle is measured and analysed. At last, the stiffness relation is studied and load carrying capacity of old bridges is analysed. Examples are given for reference. Related Articles | Metrics

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Basic Theories for Scour of Spurs and Computation of Local Scour Zhao Shiqiang 1989, 8(1): 13-21.  Abstract ( )   PDF (588KB) ( )   In this paper, the flow state around spurs and the basic theories for local scour of spurs are discussed. And the formula of local scour is obtained as hB=[(3(n+1)/n)(h/3Dn)0.75(U0/Us)Dn-h]KθKm According to experiment data the factors of Km, Kθ are given. Related Articles | Metrics

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The intuitionistic Fuzzy Set Chen Guozhen 1989, 8(1): 26-35.  Abstract ( )   PDF (571KB) ( )   We discuss parties of intuitionistic negation in derail. In this paper, we introduce the concept of fuzzy as and its measure in intuitionistic fuzzy sets. Related Articles | Metrics

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Bonding Characteristics of Tendons under Sustained and Repeated Loads Lu Liandi 1989, 8(1): 36-43.  Abstract ( )   PDF (563KB) ( )   This paper discussed in detail the bonding characteristics of reinforced and prestressed steel under sustained and repeated loads and also the calculation of bonding stresses. Related Articles | Metrics

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Flow Assignment in Freeway Luo Xia 1989, 8(1): 44-51.  Abstract ( )   PDF (503KB) ( )   A newly-built freeway needs the reconstruction of a distribution model for the network flow, This paper its to establish a distribution model of freeway flow in the new network by the analysis of the relationship between the generation effect of the newly-built freeway flow and that of the original network flow. Theoretical basis is provided for the planning, design and evaluation of the freeway system. Related Articles | Metrics

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Structural Stiffness Evaluation of Flexible Pavement Deng Xuejun, Tang Boming 1989, 8(1): 52-57.  Abstract ( )   PDF (425KB) ( )   A framework of structural stiffness evaluation for flexible pavement, which is based on the deflection basin, is presented. By analysing the character of surface deflection basins, a conception of deflection sections is proposed, a self-iterative model is used to calculate the stiffness, and a computer program is developed. Related Articles | Metrics

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General Solution of Axisymmetric Problems for a Long Thick-Walled Pipe Wang Tiangeng 1989, 8(1): 58-63.  Abstract ( )   PDF (283KB) ( )   In this paper, the general solution of a long thick-walled pipe under axisymmetric stress boundary condition is obtained by use of the method of Fourrer Transforms,which was used to the circular tunnel problem by reference 3. This solution is much more useful for application to localized load problems. Related Articles | Metrics

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Basic Theory of Cement Colouring Liu Wanzhen, Jiang Yihua 1989, 8(1): 72-80.  Abstract ( )   PDF (728KB) ( )   This article,according to the technological process of production of colour cement based on colour mixture technique and direct scorifying technique, advances the basic-theory of cement colouring, which deals with mixture, disrecsion, spread, coordination field, solid solution and lattice defect, etc. On the basis of the aforesaid theory and actual conditions of cement colouring, the authors have made first exploration, and pointed out two different viewpoints of explanation of cement colouring mechanism. They have also made a brief introduction to their views. Related Articles | Metrics

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Analysis of Calculating Method to Lock-Head Floor of Dock Mode Lu Honggen 1989, 8(1): 81-90.  Abstract ( )   PDF (683KB) ( )   Through the model experiment and computation analysis of three-dimentional finite element of the lock-head on the basis of editing lock design code as well as of the data observed at the construction site, this paper demonstrates the problem and condition in simplified calculation of dock and lock-head floor in present engineering, and studies reasonable calculation methods still further. Related Articles | Metrics

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Understanding Channel Regulation of the Jiaojiang River Ji Yonghua 1989, 8(1): 91-96.  Abstract ( )   PDF (411KB) ( )   The changes of the plane pattern and the part landform are discussed in this paper. On the basis of the law of the Jiaojiang River's fluvial process, this paper puts up a new pattern for the Jiaojiang River, which fits in with that in 1933. The Jiaozhi Sands in the middle of the Jiaojiang River is unsteady. Since 1960, it has got smaller and smaller. The depth of the harbour is decreased with the Jiazhi Sands shrinking. Now the harbour isn't working well. In this paper, we discuss the possibility of bringing back the Jiazhi Sands, and give some opinions on the channel regulation of the Jiaojiang River. Related Articles | Metrics