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19 April 1993, Volume 12 Issue 2 Previous Issue    Next Issue

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A Theoretical Study on Evolution of Transport Structure Zhao Yiping, Hu Anzhou 1993, 12(2): 1-8.  Abstract ( )   PDF (602KB) ( )   In the viewpoint of development, this paper has analysed the general trend in the evolution of transport structure, on the basis of which we have brought to light the internal factors of evolution about transport structure. It has also studied the rational criteria of transport structure under certain conditions. Related Articles | Metrics

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Studies on the Tax Policy of Highway Transport Industry (I)——Analyses About Taxation Structure Huang Chengfeng, Xu Qingbin 1993, 12(2): 9-15.  Abstract ( )   PDF (498KB) ( )   The taxation structure of highway transport industry is studied, and suitability between the policy and the industry is discussed as well. Related Articles | Metrics

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Studies on the Tax Policy of Highway Transport Industry (Ⅱ) Policy Reform Advice Huang Chengfeng, Xu Qingbin 1993, 12(2): 16-22.  Abstract ( )   PDF (520KB) ( )   Three effects of Tax Policy of Highway transport industry are studied in this paper. Related Articles | Metrics

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Studies on the Tax Policy on Highway Transport Industry (Ⅲ)——Policy Reform Advice Huang Chengfeng, Xu Qingbin 1993, 12(2): 23-28.  Abstract ( )   PDF (457KB) ( )   The specialities of the tax policy on highway transport industry are studied, and some policy advices are also given. Related Articles | Metrics

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Correlation Analysis of Mass Transit Volume to Various Factors in Xian City Zhou Wei, Zhang Shusheng 1993, 12(2): 29-35.  Abstract ( )   PDF (446KB) ( )   By means of grey relative degree and correlative coefficient, this paper systematic ally analyses the action of various factors, such as area expansion, economics development and passenger traffic pattern, on the mass transit volume, abtains some results worth while reference, and suplies basis for further quantitative analysing and decision. Related Articles | Metrics

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An Optimal and Practical Method to Analyse the Reliability of Asphalt Pavement He Zhaoyi, Zhang Gaofeng, Deng Xuejun 1993, 12(2): 36-41.  Abstract ( )   PDF (357KB) ( )   In this paper, we have a discussion about an optimal method to analyse asphalt pavement reliability. The relevent program has been developed. The program can be used in calculating both design-checking computation points and reliability index β. The results has proved to be efficient and practical in comparison with other analysis methods. Related Articles | Metrics

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Mix-compaction Time of Lime Soil Li Yiming, Yu Jianrong 1993, 12(2): 42-46.  Abstract ( )   PDF (322KB) ( )   In the field of lime soil investigtion the concept of mix-compaction time and space network structure is put forward first in the paper. The decay law of effective lime dose in the mixture of lime soil was studied after the formation mechanism of lime soil strength has been discussed. A decay mathematical model is proposed according to the testing results. The calculation formulation of mix-compaction time on different designing lime in dose ibased on the model. Related Articles | Metrics

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Mechanical Properties of Glass Fiber Reinforced Concretes For ARC-3 Type Jiang Jianming, Ling Tianqing 1993, 12(2): 47-53.  Abstract ( )   PDF (432KB) ( )   In this paper, based on the experimental studies, the effects of the ARC-3 glass fiber for the improvement of the flexural tensile and the unconfined compressive of the concrete are analysed. Further statistical relations between flexural tensile strength, volume ratio of fiber and curing time, and a mathmatical model of the flexural tensile is presented. Finally, the optimum fiber volume ratio in the concrete is presented. In this paper, a mathematical model of the volation between the flexural tensile strength and the compressive strength is given. The plastic and the cracking, coompressive elasticity modulus of the concrete is also anslysed. Related Articles | Metrics

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Simply Creeped Calculation for Indeterminate Bar System Structures Li Youxing, Xiao Fangchun 1993, 12(2): 54-57.  Abstract ( )   PDF (222KB) ( )   In this paper, by using Noutong's and Bailei's experimental formulas and elastic anslogy method, the total complement energe function of bar system structures is obtained. Meanwhile when Lagrangians are intruduced the conditional minimax problems of the complement energe function may be changed into unconditional minimax problems of Lagrange function, and by means of which the creeped stress of indeterminate bar system structures is computed. Examples are also given to describe its applications. With clear concepts and convenient calculation, the paper has practical value. Related Articles | Metrics

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The Approach of the Relations between the Water Destruction of Mingjiang River Navigation Water Channel and the Neotectonic field Chen Hongkai, Bai Zipei, Li Yaxin 1993, 12(2): 58-63.  Abstract ( )   PDF (390KB) ( )   This paper mainly discusses some basic relations between channel water destruction and neotectonic field in Mingjiang river with the Scheidegger method and Dephel method. The results indicate that channel water destriction is a function of relations between neotectonic field and orient distribution of the channel, direction of realignment buildings in the channel. On the basis of that we provide a potential approval model of channel water destruction:P=147(kxi+kyi+kzi)-93. The model has proved reasonable after computations of some typical shoals in Mingjiang river. The total value of the channel in the model is 85. So we can conclude that Mingjiang navigation channel is likely to be easily destroyed by water. Related Articles | Metrics

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Experimental Studies on the Sediment and Navigation For Yong-an Hydro-power Station Zhao Shiqiang, Wei Daijun 1993, 12(2): 64-73.  Abstract ( )   PDF (627KB) ( )   Yong-an hydro-power station is a key water control project, which has multipurposes both in power and navigation. This paper studies sediment movement and shape of eraded riverbed before and after the project is built. By comparing the model test with the built project, the authorities to solve different problems about sedimentproof regulation of the channel, reasonable arrangement of navigation constructions and some engineering measures about preventing sediment and inproving navigation conditions. The key project was built 5 years ago, it has been proved that these engineering measures of the project are quite successful. Related Articles | Metrics

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Preliminary Research on Computer Aided Locked Design Liu Hua, Lian Jie 1993, 12(2): 74-88.  Abstract ( )   PDF (761KB) ( )   The preliminary research on the programming of navigation lock design is presented in this paper, In view of the ways of CAD (computer aided design), the hydraulic calculation and structural calculation of lock engineering are discussed. According to the investigation of the delivery system and the dock structure of the lock chamber with floor, the way to automatize the navigation lock design is studied. Related Articles | Metrics

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The Application of Orthogonal Fitted-Body Co-ordinate Systems in Flow Computation in Rivers Huang Bishan 1993, 12(2): 89-97.  Abstract ( )   PDF (520KB) ( )   2-D orthogonal fitted-body co-ordinate systems generated by a set of Laplace Equations is employed in computation of 2-D plane flow in river. It not only can overcome the defects that retangular mesh of finite difference had a poorer adaptability to complicated shape of natural river boundary and topography, but also it is easy to form general code for computation of flow in rive. It extends a capacity of finite difference in computation of flow. The lacation of mesh generated can be controlled by us. Therefore, it is a useful method to engine ring. The method has been verified by practical data. Better results can be obtained. Related Articles | Metrics

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The Arrangement Problem of Bid Evaluation in Port and Waterway Engineering Li Guochen 1993, 12(2): 98-103.  Abstract ( )   PDF (322KB) ( )   Bid evaluation in port and waterway engineering is a comprehensive problem including subjects such as technologyt economics, safety and management. This paper introduces qxiantity model for bid evaluation by using Grey correlation principle-Examples are also given. Related Articles | Metrics

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The Turbulence Characteristics in the Cylinder of an Engine Liang Xiongyao 1993, 12(2): 104-109.  Abstract ( )   PDF (366KB) ( )   The turbulence movement of an engine cylinder is very important to the combustion process, if we can make it under good control we can economize the engine and improve the exhaustion. This paper presents a systematic analysis of the factors which affect the turbulence movement in an engine. Related Articles | Metrics

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Beam Crystallizations Luo Shiyu, Shao Mingzhu 1993, 12(2): 110-115.  Abstract ( )   PDF (413KB) ( )   In this paper the appearance, development and prospect for beam crystallization have been summarized. Related Articles | Metrics