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20 September 1998, Volume 17 Issue 3 Previous Issue    Next Issue

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A Discussion on Vibration Analysis Theories of Highway Bridges and Vehicles Lin Mei,　Xiao Shengxie 1998, 17(3): 1-9.  Abstract ( )   PDF (74KB) ( )   In this paper the classical and modern theories of bridges and vehicles vibration analysis are summarized, and some calculation theories are also given, moreover, the characteristics of each theory are discussed. References | Related Articles | Metrics

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Application of Terminal System Operating Simulation of Highway Freight Transportation Yan Qipeng,　Ye Huaizhen 1998, 17(3): 10-12.  Abstract ( )   PDF (45KB) ( )   The operating simulation program of freight transportation terminals written by means of simulation optimizatial theory is effective by test. A simulation example is given. The simulation program can be applied in evaluation and adjustment of lay-out plan and the design of rational operation while confirmed terminal system. References | Related Articles | Metrics

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Grouping and Application of Water-conduction Fracture in Permanent Shiplocks of the Three Gorges Project Chen Hongkai,　Tang Hongmei 1998, 17(3): 13-20.  Abstract ( )   PDF (84KB) ( )   Seepage and drainage in fractured rockmass are important investigative topics on slope stability and deformation in permanent shiplocks of the Three Gorges Project, whose basis is founding the seepage model used in seepage and drainage studies. Discontinuum seepage model can be formed objectively with typical water-conduction fractures. On the basis of investigation in-situ, water-conduction fractures in slope rockmass can be divided into 11 groups in permanent shiplocks of the project, in which NE-NEE with steep dip angles are dominant water-conduction fractures. Hereby applications are reasonable on calculating of rockmass equivalent permeabilities and identifying of optimal design of drainage holes. References | Related Articles | Metrics

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Study on the Width of Regime Channels Liu Yahui 1998, 17(3): 21-24.  Abstract ( )   PDF (117KB) ( )   In this paper, a number of approaches related to the study of the width of regime channels are analyzed and discussed. Then, the relation of the distribution of total shear stress on the bed and banks of a channel and the width of regime channels is presented and calculated with the measured data. According to the relation, the width of regime channels can be determined. References | Related Articles | Metrics

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Study on Resistance Coeff icient of the Culvert Sudden Enlargement Type Behind the Valve in Ship Lock Liu Pinchang 1998, 17(3): 25-30.  Abstract ( )   PDF (75KB) ( )   Based on local model experiment, the resistance coefficient ξvn on valve section under the variant sudden enlargement direction、ratio、 initial point behind the valve in flush gallery is studied, and we establish a widely applying range emprical calculated formula, which can be referred to by people engaged in education, research and project designing. References | Related Articles | Metrics

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Dynamic Fatigue Reliability of Highway Bridge Under Vehicles Action Wang Junli,　Ma Chunyan 1998, 17(3): 31-37.  Abstract ( )   PDF (61KB) ( )   Based on the stochastic dynamics and damage cumulation analysis, this paper anslyses the dynamic responses of highway bridge under driving vehicles action, its repeating stresses and strains make the structure fatigue damage cumulation. From the fatigue resistance and stress spectrum of bridge structure, the dynamic fatigue reliability of highway bridge is studied. References | Related Articles | Metrics

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Discusing Interchange Aesthetics (Ⅰ) Wu Guoxiong,　Sun Jiasi 1998, 17(3): 38-41.  Abstract ( )   PDF (45KB) ( )   With the development of interchange, interchange aesthetics is becoming a popular subject. Interchange aesthetics is a mixed discipline of architecture aesthetics、 road aesthetics、 bridge aesthetics and traffic aesthetics. Based on analysis of the formation and function, this paper summarizes the characteristics and construction rules of interchange aesthetics, in order to supply with relative know ledge of interchange aethetics and create better interchange. References | Related Articles | Metrics

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Evaluation System of the Quality of Highway Interchange Alignment Cao Rongji,　Sun Jiasi 1998, 17(3): 42-47.  Abstract ( )   PDF (55KB) ( )   Interchanges are essential components of freeways, and their alignments have great impact on traffic functions. By analysing the running state of vichcles, this pape discusses the design theory of speed change lane, and establishes speed model of running vehicle and presents method to evaluate the quality of interchanges by using speed ratio, vehicle fuel comsumption, and alignment co-ordinating coefficient of ramps as evaluation index. The result of this research is of great significance in interchange plan designing, choosing or in existing interchanges post-evaluating and remarking. References | Related Articles | Metrics

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Freeway Landscape Design Pan Hai 1998, 17(3): 48-53.  Abstract ( )   PDF (50KB) ( )   Freeway is the facility which serves people with fast, safe and comfort transportation. Landscape analysis and design is an important part of freeway design and a new problem. This paper expounds landscape compostion, and rules、 points and content of freeway landscape design in order to set forth basis for design and analysis or evaluation of freeway landscape. References | Related Articles | Metrics

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Choice of Interchange Type in Mountainous City Jin Shubin 1998, 17(3): 54-59.  Abstract ( )   PDF (51KB) ( )   Choice of interchange type which is an important task of interchange design decides synthetical function and utilizing efficiency of interchange. First this paper analyses the characteristics of mountainous city and expounds the demands and principle, then sets forth some rules which choose interchange type, at last gives steps to choose interchange type, in order to supply information for designers to design interchange type. References | Related Articles | Metrics

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The Optimization of Three-Dimensional Highway Alignment by Stochastic Dynamic Programming and HSAP Program Computational Example Feng Chun, Tian Jinggui 1998, 17(3): 60-64.  Abstract ( )   PDF (55KB) ( )   In this paper an optimization method with stochastic dynamic programming is studied, the three-dimensional method is introduced by using three-dimensional intersecting point to specify highway alignment in space, and the concrete optimization method and program is shown, at last the primary application of the program (HSAP)shows that the program is effective and practical. References | Related Articles | Metrics

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The Local Bearing Strength of High-Strength Concrete Under the Square Load Li Ziqing, Li Zichun, 　Zhang Shuzen 1998, 17(3): 65-71.  Abstract ( )   PDF (81KB) ( )   The paper is focused on the study of the influence of the factors such as the bearing area ratio. and its eccent ricity on the local bearing strength of high-strength concrete. Using the theoretical formula derived as reference, the equations for practical computation are established. A linear relationship between the eccetricity ei and the local bearing strength factor β as well as the simplified method calculation Ad are determined for the case of eccetric load. References | Related Articles | Metrics

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Research on the Application of Commodity Concrete in Municipal Road Surface Engineering Liu Dachao, Tang Shaodong 1998, 17(3): 72-77.  Abstract ( )   PDF (53KB) ( )   Applying commodity concrete in municipal read surface engineering, there are many features—— reliable quality guarantee, fast constructien, smaller envirenmental pollution and noise, as well as no table social-economic benifit. In this paper, some features, such as the lange density, flowing of commodity concrete, have been discussed. And some apt operatirg measures have been pointed out, through tests in labs and practices in construction fields. References | Related Articles | Metrics

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The First Experimentation of the Applying of the Water-reducing Agent to the Concrete Roads Deng Jingguo, Xu Jijiang,　Kuang Moyou 1998, 17(3): 78-85.  Abstract ( )   PDF (55KB) ( )   This article is for the reference of the highway constructors. It is full of references to the first experimentation of the applying of the water-reducing agent to the concrete road paving, giving a lot of data available of saved cement. The authors have found out the effects of water-reducing agent on the hardness of concrete road and the best compound proportioning, and the best opportunity to cut the crack closing as well. References | Related Articles | Metrics

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Weak Ground Construction Control of No.4 Contract Section in Shenzhen to Shantou Highway Tong Degong,　Mao Guodong, Zhou Chun'er 1998, 17(3): 86-93.  Abstract ( )   PDF (84KB) ( )   In this paper, it analyses and discusses that the system engineering construction of building express highway in deepooze ground and the stabilization control standards of loading and draining in weak ground construction, based on the analysis and supervision the weak ground construction of No.4 contract section in Shenzhen to Shantou Express Highway. References | Related Articles | Metrics

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Harm and Prevention of Uncompacted Areas in Highway Subgrade Zhou Weiqiao 1998, 17(3): 94-97.  Abstract ( )   PDF (50KB) ( )   In this paper the harm of uncompacted areas in highway subgrade is analysed. The reasons are summed up for forming uncompacted areas in constraction of subgrade. According to practial experience of highway engineering, the technical measures and inspection method are advanced in order to prevent forming uncompacted areas. References | Related Articles | Metrics

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The study of Theory Length of Hydraulic Jump Shen Bo 1998, 17(3): 98-101.  Abstract ( )   PDF (47KB) ( )   According to some suppositions, this paper has built up the theory length formula of hydraulic jump, and compared it with the experiment formula. References | Related Articles | Metrics

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Research on the Hydraulic Jumps Rotate Monument of Vortex and the Back Section Wave Shen Bo 1998, 17(3): 102-105.  Abstract ( )   PDF (49KB) ( )   This paper has set out and further analysesed the hydraulic jumps rotate monument of vortex and back wave. Hydraulic jump many complex situations such as rotate vortex and distinction point Froude number Fr1=1.7 have been discussed from theory. References | Related Articles | Metrics

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Effect of Underground Water on the Stability of Douyapeng Landslide in Wanxian, Chongqing Qu Shiqin,　Yang Chengyu 1998, 17(3): 106-111.  Abstract ( )   PDF (69KB) ( )   The present paper analyses the effect of runoff water and underground water on the stability of Douyapent landslide in Wanxian according to the site observations for two years. The analysis shows that landslide deformation is closely related to the runoff water and underground water. Excessive water to the landslide body softens soil and reduces resistant shear stress resulting in lower stability of landslide. An appropriate method of cutoff ditch located along up-edge of the landslide can lower underground water level dramatically. Later, almost digging pile-holes show that up and bottom interfaces of the landslide became dry and healed, and the stability of landslide could increase about more than 1.7 times. References | Related Articles | Metrics

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Probabilistic Analysis of Soil Properties and Its Application to Reliability of Slop Stability Qu Shiqin,　Yang Chengyu 1998, 17(3): 112-118.  Abstract ( )   PDF (69KB) ( )   The paper presents probability analysis of earth characteristics in territory of the Three Gorges Project with the help of 295 group data and shows that β distributinon of c and Ф may be more appreciated than the Normal Distribution. The example indicates that the stable earth slop determined by specified soil properties is an unstable with the aim of reliability theory. Due to the Three Gorges project smooth development, there is a need to collect more soil mechanics data to achieve assessment of soil properties and their distribution so as to assure earth slop stable for resident relocation, building, harbor and highway reconstruction. References | Related Articles | Metrics

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Regularization of Dasha River and Application of Rubber Dam Wang Zhenggen 1998, 17(3): 119-123.  Abstract ( )   PDF (49KB) ( )   In this paper, the situation on Dasha river regularization in Shenzhen city and the technical problems related to the application of rubber dam are briefly introduced. References | Related Articles | Metrics

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The Existence of Positive Solutions for Semilinear Elliptic equation with Singular Boundaiy Value Li Jianzhang, Huang Qinglong 1998, 17(3): 124-130.  Abstract ( )   PDF (61KB) ( )   In this paper, by the method of subsolutions and superstutions, the existence of positive solutions for semilinear elliptic equation Δu =uq (q >0) in a ball and Lu =uq (q >0) in the bounded domain with smooth bundary, with singular boundary value (i'eu(Ψ) = +∞), has been obtained. References | Related Articles | Metrics

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Proposition Concerned with the Sub-transposed Matrix Wang Wenhui 1998, 17(3): 131-134.  Abstract ( )   PDF (37KB) ( )   From the concept of sub-transpose and sub-symmetry of the matrix, the author deduces the related. Proposition that the inverse matrix of the sub-transposed matrix is similar to the subtransposed matrix. References | Related Articles | Metrics