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20 December 1998, Volume 17 Issue 4 Previous Issue    Next Issue

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Estimation on Natural Frequency of Laterally Loaded Pile Cai Jing, Wu Hengli 1998, 17(4): 1-4.  Abstract ( )   PDF (51KB) ( )   It is very important to determinate the natural frequency of single lateral loaded pile by a simple and convenient method in seismic design of pile structure. A formulation of calculating the frequency is given in the paper, and is then demonstrated. References | Related Articles | Metrics

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Key Mechanical Problems of Super-Long-Span Cable-Supported Bridges Fang Mingshan, Xiang Haifan, Xiao Rucheng 1998, 17(4): 5-9.  Abstract ( )   PDF (52KB) ( )   This paper discusses some key mechanical problems of super-long-span bridges, which is aimed to give valuable reference to the design of the bridges to be built in the future. References | Related Articles | Metrics

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The Reaserch and Application of Construction Plan on Uncontinous Box Beam of the Hanchuan-Hanjiang River Bridge Chen Guangxin,　He Yuwei, Cai Mingzheng, Liu Zhong, Fen Ming 1998, 17(4): 10-13.  Abstract ( )   PDF (70KB) ( )   This paper introduces the cast-in-place cantilever construction technology used in uncontinous box beam of the Hanchuan-Hanjiang River Bridge. References | Related Articles | Metrics

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The Formulas of Singular Integrals in BEM for Problems of Thick-Plate on Two-Parameter Foundation Chen Xichang, Deng Anfu, Zou Yunming 1998, 17(4): 14-23.  Abstract ( )   PDF (81KB) ( )   In accord with the characteristics of singular integrals in boundary element method for solving problems of thick plates on two-parameter foundation, all formulas for calculating singular integrals are set up by selecting the displacements and stresses which satisfy the governing differential equations in this paper, on the principle of virtual energy. Thus, the problem of calculating of high-order singular integrals in the BEM is solved successfully. References | Related Articles | Metrics

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Analysis on Stresses of Flexible Pavement Surface Sun Lu, Zheng Kai 1998, 17(4): 24-28.  Abstract ( )   PDF (65KB) ( )   The stresses of flexible pavement surface are analyzed using multilayered media program. The data are taken as samples to regress a general formula which is expressed by basic function. In this way, engineers can get surface stress of pavement without depending on dignal computer and this formula is useful in backcalculation algorithm for falling weight deflection. References | Related Articles | Metrics

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Discussing Interchange Aesthetics (Ⅱ) ———Overall-modelling of Interchange Wu Guoxiong, Sun Jiasi 1998, 17(4): 29-33.  Abstract ( )   PDF (61KB) ( )   Study of interchange aesthetics involoves interchange overall-modelling, alignment geometry, bridge ortunnel, surroundings cordination, partial modelling and decoration. This paper elaborates interchange overall-modelling including meaning, basic characteristics, basic technique, evaluation and step of modelling to reflect the relations between interchange aesthetics and interchange overall-modelling. References | Related Articles | Metrics

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Using Method of DTM to Get Cross Section Ground Line after Alignment Moving on Paper Gao Jianping 1998, 17(4): 34-38.  Abstract ( )   PDF (57KB) ( )   In the process of highway surveying and designing, it is of ten required to make alignment moving on paper, After the moving, how to get the cross section ground line quickly and accurately is important, so it is a concern of the desig ners. In this paper, a method of DTM (Digital Terrain Model) is given. References | Related Articles | Metrics

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Some Discussions about the Paper “An Approximation Method of Calculating Alignments' Intersections in Interchanges Horizongtal Alignment Design” Wang Fujian,　Zeng Xuegui 1998, 17(4): 39-44.  Abstract ( )   PDF (63KB) ( )   The view points and methods in the paper “An Approximation Method of Calculating Alignments 'Intersections in Interchange' s Horizontal Alignment Design” are discussed and analysed, then some vague ideas and errors in the meationed paper are pointed out and clarified. The correctness of every calculation method must be proved by not subjective suppositions but strict mathematical analyses and proofs. References | Related Articles | Metrics

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Optimum Design for Proportioning of Pavement Concrete Mixing Fly Ash in Mechanical Sl ip-form Execution Cao Xiaofeng 1998, 17(4): 45-48.  Abstract ( )   PDF (45KB) ( )   This article introduce the optimum design for the proportioning of pavement concrete mixing fly ash through the orthogonal design method in the mechanical slip-form execution of expansion construction of National Highway 106 and the verification of its wearability .The design could be used for reference in other projects for its good effect in the practice. References | Related Articles | Metrics

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Investigation on Methods of Enhancing the Early Strength of Lime pfa Mixture Zhang Lin, Teng Yun 1998, 17(4): 49-52.  Abstract ( )   PDF (48KB) ( )   The paper presents the testing results on using cement and chemical additive (chemically pure agent and industrial waste fluid) to enhance the early strength of lime pfa mix ture. The conclusion obtained is that the cement is the best additive in enhancing the early strength of lime pfa mix ture. References | Related Articles | Metrics

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Field Test of Rotary Jet Grouting Pile on Soft Ground Liao Shirong 1998, 17(4): 53-58.  Abstract ( )   PDF (68KB) ( )   This paper presented the behavior of rotary jet grouting pile on soft ground. The field test showed that the density of soil at the pile end could be increased, and the bearing capacity of composite ground consisting of the pile and soil could also be increased. Vertical and lateral bearing capacity of the reinforced rotary jet grouting pile would be increased by 3 % or wore in comparison with that of the unreinforced rotary jet grouting pile. References | Related Articles | Metrics

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The Principle and Design of Retaining Piles with Prestressing Cables Tian Jinggui, Fan Caoyuan 1998, 17(4): 59-64.  Abstract ( )   PDF (75KB) ( )   The principle and analysis method of retaining piles with prest ressing cables are introduced. Its application and testing are given in the paper. Some problems are discussed at the end of the paper. References | Related Articles | Metrics

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The Properity of Slope in Chuda Highway Fan Caoyuan, Liu Dejing, Zan Chengzhong 1998, 17(4): 65-70.  Abstract ( )   PDF (82KB) ( )   The paper out lined the property of geology and soil in chuda highway, yunnan. a few methods of controling slope are introduced. References | Related Articles | Metrics

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Research on Macroscopic Control of Urban Road Traffic System Zhu Shunying,　Wang Wei, Wang Yi, Yang Tao, Han Bin 1998, 17(4): 71-76.  Abstract ( )   PDF (59KB) ( )   The transportation system macro-control is a function of transportation management and transportation plan management. It's also the essential prerequisite to keep the transportation system working smoothly. This paper discussed the conception, feature and content of the transportation system macro-control and set up models of population control, vehicle possession control and traffic model control. The method of controlling land use is briefly discussed . References | Related Articles | Metrics

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Service Level of Evaluation of Urban Road Network Zhu Shunying,　Wang Hong, Wang Yi 1998, 17(4): 77-80.  Abstract ( )   PDF (52KB) ( )   Researches of service level were reviewed, and physical, operative and administrative characteristics of urban road network were analysed. The authors put forward a new method calculating service level of network in average speed of network, and profoundly discussed principles, methods, two kinds of incorrect tendencies and psychological control factors of tripers determining minimum acceptable service level of network in which city planners and administrators of city develepment are interested most. References | Related Articles | Metrics

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The Dynamic Manage in Contract Liu Jie 1998, 17(4): 81-84.  Abstract ( )   PDF (43KB) ( )   In the supervise of the constraction, we institute dynamic manage, to make supervision agency regulate the composition by oneself, improve members'zeal, initiative, so, the benefits of the work can give full play. This can be consulted by supervisors. References | Related Articles | Metrics

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Harmonic Balance Method for Solving a Class of Non-linear Oscil lation Problems Yuan Yiwu, Xu Kai 1998, 17(4): 85-86.  Abstract ( )   PDF (35KB) ( )   In this paper, using the harmonic balance method, the author seeks to solve the problems for a class of nonlinear oscillations which subject to parameter and forced excitation. We only relate to seek to solve the nonlinear algebraic equations, a need not seeking to solve any differential equation. The problem studied in Ref.[1] is only the special case of this paper. References | Related Articles | Metrics

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The Regulation and Research on Sediment in the Brabch-shoal along Chuanjiang River Cheng Changhua, Wang Shiyi 1998, 17(4): 87-90.  Abstract ( )   PDF (71KB) ( )   The article mainly analyses the regulation methods and results of all kinds of branch-shoals. According to the classification of flow and sediment transportation, the less quantity of work can get the more benefitial result of regulation by the specical regulation struction with the application of physical and mathematical models to the regulation of branch-shoals. References | Related Articles | Metrics

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The Comprehensive Analysis of the Special Property at the Tributary Junction of Mountain River Lan Bo 1998, 17(4): 91-96.  Abstract ( )   PDF (83KB) ( )   According to the collected data of mountain river confluences, some conclusions are obtained. Distributed density of the mountain river confluences is lower than that of the plain river, Incoming water and sendiment is concent rated at the freshest period, the change from the low flow to the flood flow. The ratio of tributary discharge is increased; there are river islands near the junction, and the postion of the junction is concerned to the confluent patten and the position of the tributary junction, etc. These properties are helpful for the genetic analysis and the regulation of the shoal at a tributary mouth. References | Related Articles | Metrics

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The Mark Measurement of Resettlement Area for Three Gorges Project Yang Shiling 1998, 17(4): 97-102.  Abstract ( )   PDF (52KB) ( )   The Three Gorges Project is the cross century and the most famous water conservancy project in the world. The resett lement has great influence on the Three Gorges Project. Mark measurement of resett lement area, the basic equipment, is very important to the resett lement. The mark mearsurement of resett lement area for Three Gorges Project is introduced in this paper. References | Related Articles | Metrics

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Research on Hydraulic Jump's Differential Grades Froude Number and Internal Motional Formula Shen Bo 1998, 17(4): 103-107.  Abstract ( )   PDF (75KB) ( )   This paper has determined and proved the distinguished grades hydraulic jump froude number by weight wave theory, and sets out the internal motion formula and changing process with Froude number. References | Related Articles | Metrics

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The Theory Method of Counting Hydraulic Jump Surface Profile Shen Bo 1998, 17(4): 108-111.  Abstract ( )   PDF (53KB) ( )   Through analysis of internal activity of hydraulic jump. This paper has built up the counting method of hydraulic jump profiles, and proved it with experiment data. References | Related Articles | Metrics

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An Approach of Group Decision Making with Efficiency and Equity Zhou Lingling, 　Yang Lei 1998, 17(4): 112-117.  Abstract ( )   PDF (58KB) ( )   There does not exist a continuous group utility function which results in decisions that obey both the Pareto optimality and equity criterin (Kirkwood, 1979). This paper presents away to build model which can solve efficiency and equity in group decision, the dissertation decomposes the group decision into internal decision and external decision. The former is decision about fairness, and the latter is decision about efficiency. The decision model enables the group to take into account equity consideration without sacrificing Pareto optimality. The individual utility function is aggregated to form a group utility function for the vector of pay offs, and this latter function is, in turn, used to generate a group utility function for the overall group payoff and a sharing rule for dividing the group payoff into individual payoffs. The resulting group decisions are Pareto optimal in utility space, and are equity in payoff space. References | Related Articles | Metrics