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20 June 1998, Volume 17 Issue 2 Previous Issue    Next Issue

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Travelling-Wave Seismic Response of Long-Span Arch Bridges Xu Jinhua, Wang Xiangjian 1998, 17(2): 1-5.  Abstract ( )   PDF (63KB) ( )   In this paper, the travelling-wave effect on planar seismic responses of the long-span arch bridges is analysed based on the theory of multiple-support seismic excitations and the conception of pseudo-static displacement. The step-by-step integration method is applied considering the geomet rical nonlinearities and the p-Δeffect caused by the dead-load. The numerical result shows that the travelling-wave effect has serious influence on the long-span arch bridge and should be considered in engineering design. References | Related Articles | Metrics

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Terminal System Operating Simulation of Highway Freight Transportation Ye Huaizhen, Yan Qipeng 1998, 17(2): 6-10.  Abstract ( )   PDF (55KB) ( )   The operating characters of highway freight transportation terminal system are analysed in this paper. The operating simulation program of freight transportation terminal is written by means of simulation optimizatial theory and method, and simulation process is instructed in detail. References | Related Articles | Metrics

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The Design and Analysis of the Simple Beam-Arch Composite Bridge of the 100.5m Span Jin Xiaosi, Jin Chengdi 1998, 17(2): 11-19.  Abstract ( )   PDF (104KB) ( )   In the designing of the simple beam-arch composite bridge of the 100.5m span in the out Suzhou City Ring Road, Jiangsu Province, the results achieved by calculation, analysis of the structure, and test of the load on the real bridge is int roduced in this paper. We use steel pipe concrete for the arch rib, prest ressed concrete box beam for the stiffened girder, OVM anchorage and low relaxation tendon for the longitudinal prest ressed cable. In the construction of the bridge, the method of the beam first, the arch af terwards, and with little scaffords was used. The results of test have approximately coincide with the calculations and the chief section of the bridge had no crackles. References | Related Articles | Metrics

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A Nonlinear Analysis of the High-Pier with Support of Rubber Plate Tian 　Zhong chu Cheng Xiangyun 1998, 17(2): 20-25.  Abstract ( )   PDF (65KB) ( )   It is presented in this paper a suitable calculation model and methods of analysis of a high-pier bridge with supports of rubber plate and with multible simple supports and a continue deck (pavement). The solving of this problem will be helpful for the widely use of the high pier. References | Related Articles | Metrics

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The Stress-Dependency Model and Result of Repeated Load Triaxial Test for Subgrade Soil Ling Tianqing, Wang Shijie, Xu Zhihong, Wu Xiaofeng 1998, 17(2): 26-31.  Abstract ( )   PDF (69KB) ( )   It is evident that the responses of subgrade soil are non-linear and hence, with a large number of experiments and theoretical studies, this paper analyses the stress-dependency model of the resilient moduli and modifies the foreign widely-used model in existing deficiency and theorial inaccuracy. Based on the stress-dependency model, using the repeated load triaxial test, the paper analyses the stress-dependency of the subgrade soil resilient moduli for the first time in China. References | Related Articles | Metrics

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The Influence of Pavement Structure on Subgrade Settlement Zheng Chuanchao 1998, 17(2): 32-36.  Abstract ( )   PDF (58KB) ( )   In this paper, multilayer elastic system and summation method were employed to study the influence of pavement structure on subgrade settlement. The relationships among pavement structure, compressive modulus and subgrade settlement were established and analysed. Finally, measures to prevent subgrade settlement was proposed. References | Related Articles | Metrics

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Design and Stress Analysis on the Frame-Beared Shear Wall in the Turret of Tall Bulidings Tu Lin 1998, 17(2): 37-44.  Abstract ( )   PDF (50KB) ( )   This paper briefly introduces the structural design of the turret at the top of tall buildings while choosing a suitable structural scheme, stress analysis about the frame-beared shear wall is discussed in details. References | Related Articles | Metrics

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Testing Studies on Rock Loading Process Tang Hongmei, Chen Hong kai 1998, 17(2): 45-50.  Abstract ( )   PDF (76KB) ( )   In this paper, axial compressive and triaxial shear test ing in concrete mortar sample instead of rock, has been made which shows stress-strain curves under various conditions. Both σ1 -σ3 curve and (σ1 -σ3)/2 - (σ1 +σ3)/2 curve are shown to present a high positive correlation from testing results, which are important to rock mechanics. References | Related Articles | Metrics

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Discussing about Foundation Treatments in Lanzhou (Zhongchuan)Airport Tan Xiaogang 1998, 17(2): 51-55.  Abstract ( )   PDF (54KB) ( )   Based on collapsible loss foundation and the harmful geological conditions such as artificiallyformed sand drain, sand hole, cavity and so on in the airport, this paper discusses the adaptability of all kinds of foundationt reatments, and accordingly the method of deeply dynamic compaction is recommended. References | Related Articles | Metrics

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A Finite Element Analysis of Asphalt Pavement on Soft Soil Foundation Zhou Xingchun 1998, 17(2): 56-63.  Abstract ( )   PDF (78KB) ( )   In this paper, 8-point equation parameter finite elements method is presented, and the pavement structure additional stress caused by differential settlements of soft soil foundation is analysed. Consequently, the differential settlements value of soft soil foundation is proposed to ensure good performance of asphalt pavement on soft soil foundation. References | Related Articles | Metrics

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The Comparative Study of Three Systematic Evaluation Methods in Comprehensive Evaluation of Traffic Project Jin Shubin, Pan Hai 1998, 17(2): 64-69.  Abstract ( )   PDF (65KB) ( )   Based on analysing the evaluation model of traffic project and comparative study of the principles of three comprehensive methods such as AHP、 FRC、 FCE, we put forward a combinative method in order to evaluate traffic project. References | Related Articles | Metrics

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Study on Mode of Composition of Environment Evaluation and Transport-Line Planning Pan Hai, Jin Shubin 1998, 17(2): 70-73.  Abstract ( )   PDF (111KB) ( )   This paper analyses the relation of transport-line planning and environment evaluation, and emphasizes the evaluation content and program, in order to make a study on the mode of composition of environment evaluation and transport-line planning, and develop the suitableness, optimum line project and serve environment and economy. References | Related Articles | Metrics

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Research on the Application of Regional Logistics Theory in China Dong Qianli, Yan Min, Dong Ming 1998, 17(2): 74-80.  Abstract ( )   PDF (238KB) ( )   The paper analyses the theory of logistics development, and points out that logistics development from business to regions is an inevitable trends. The operation types of regional logistics are also discussed. The logistics system for economic growth pionts, and considerations and ways for automotive freight transport coporations as the third party taking part in regional logistics activities are studied, after summing up the application of logistics theory i n China. References | Related Articles | Metrics

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An Introduction to the development of Chengdu-Chongqing Expressway (Chongqing part) Database Li Shuqing 1998, 17(2): 81-89.  Abstract ( )   PDF (89KB) ( )   This paper has made a simple introduction to the process, system demand investigation analyses and design of the development of Cheng du-Chongqing expressway (Chongqing part) database, and the technical characters in developing it, such as the application of dynamic sectioning technology, the opening system design technology, graphic system processing technology and the application of GIS technology. References | Related Articles | Metrics

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Flow Features of Sharp Bend in Mountain River Zhou Huajun,　Deng Guixiang 1998, 17(2): 90-94.  Abstract ( )   PDF (64KB) ( )   Flow features of sharp bend in mountain river are investigated in this article. The theorectical relationships to predict the rise in the upstream flow depth and maximum width of backflow zone are derived on the basis of the energy and momentum principles. The proposed relationships are verified by the results of experiments for a right-angled sharp bend. It shows that the depth rise and maximum width of backflow zone depend on froude number and bend angle. And the explicit approximate relationships for calculating the depth rise and maximum width of backflow zone are presented. References | Related Articles | Metrics

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Study on Benefit-Delay of Investment in Capital Construction in Water Transport System Zhou Xizhao 1998, 17(2): 95-99.  Abstract ( )   PDF (46KB) ( )   Based on time-value of fund, we discuss model of benefit-delay of investment in capital construction in water transport system and give concrete examples to explain it. References | Related Articles | Metrics

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Current Study and Application of Silica Fume in Concrete Tian Wenyu 1998, 17(2): 100-107.  Abstract ( )   PDF (69KB) ( )   This paper describes the production, properties and current research of silica fume. This article not only introduces silica fumes application on civil engineering, but also proposes its existing problems. References | Related Articles | Metrics

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Qualities and Practices of a Qualified Supervisor on Highway Building Site Kuang Moyou,　Xu Jijiang 1998, 17(2): 108-113.  Abstract ( )   PDF (58KB) ( )   The four qualifications, including managing quality, knowledge of ecnomy, knowledge of law and the ten-technique of supervision, are discussed in this paper. And also some basic principles in practice are presented. The qualifications and principles can be used as reference for supervision. References | Related Articles | Metrics

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BOT and Its Applications in China's Infrastructure Constructions Wang Shuyun 1998, 17(2): 114-118.  Abstract ( )   PDF (44KB) ( )   This paper analyses the roles of BOT in Chinas infrastructure constructions and the relevant problems therein. At the same time, it devotes a discussion to some policies and countermeasures for China's applications of BOT in infrastructure constructions. References | Related Articles | Metrics

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Thoughts on Expressway Tree-Planting Engineering —— Gains from Approach Tree-Planting Engineering of Humen Bridge Chen Kezhan, Chen Jianping 1998, 17(2): 119-124.  Abstract ( )   PDF (74KB) ( )   According to the concrete instance of approach tree-planting engineering of Humen Bridge on Guangzhou-Shenzhen-Zhuhai Expressway, the auther summarizes the process, the principles, and the basic train of thoughts of approach tree-planting of Humen Bridge on the basis of theory analysis, and gives a rather complete account of the function of tree -planting on expressways. It is hoped that the info rmation can be used as reference for the tree-planting on expressways in the future. References | Related Articles | Metrics

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Expressway and the Modernization of Social Economy —— About Chengdu-Chongqing Expressway Opening for two Years Song Biao;　Qiao Lezhong 1998, 17(2): 125-130.  Abstract ( )   PDF (50KB) ( )   According to the data of Chengdu-Chongqing expressway opening two years, the paper inquires into the influence of expressway on the modernization of social economy of one district or one country. For traffic transportation, the different means have kept keen competitions so as to improve the transportation structures and the technical indexes of highway transportation, and become one key passageway of comprehensive transportation system. For the development of social economy, it has influenced the ideology, sped up person, information and commodity transportation, which has created a better opportunity for promoting efficiency and enlarging production socialization. It is beneficial to assemble the factors of production, improve investment environment, extend opening to the out side and accelerate developing national modernization. The intelligent transportation system has been used to change the life style and improve the life quality in future expressway system. References | Related Articles | Metrics

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A Complement of Extracting Solutions on Orr-Sommerfeld Equation about the Analysis of Hydrodynamic Stability Feng Chun 1998, 17(2): 131-134.  Abstract ( )   PDF (49KB) ( )   In this paper, a new solution Bk(z) of Airy equation related with the Orr-Sommerfeld equation is presented by modifying the laplaces method, and the generalization of Bk(z) is just the function Bk(z,p,q). Thus, it shows complementarily why the Bk(z,p,q) can expand the Orr-Sommerfeld equation for the uniformly valid asymptotic expansion of its two singular inviscial solutions in theory and complete extracting solutions on the Orr-Sommerfeld equation about the analysis of hydrodynamic stability . References | Related Articles | Metrics