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15 December 1994, Volume 13 Issue 4 Previous Issue    Next Issue

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Near Crack Line Elastc Plastic Analysis of a Cracked Plate Loaded by Antiplane Point Forces Yi Zhijian 1994, 13(4): 1-6.  Abstract ( )   PDF (289KB) ( )   The near crack line analysis method has been used in this paper to analyze the elastc plastic fea-ture of a center cracked plate with infinite demensions loaded by a pair of antiplane point forces at thecenter of the crack surfaces in a perfect elastc plastic material. The small scale yielding conditions havebeen abandoned,so the solutions are sufficiently precise. References | Related Articles | Metrics

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Mechanical Combination & Working Quota in Mechnical Execution System of Asphait Paving(Ⅰ)── Working Law &Mathematical description of Asphalt“Mixing-Spreading-Paving” Guo Xiaohong,Guo Jiayin,Du Zhende 1994, 13(4): 7-16.  Abstract ( )   PDF (489KB) ( )   By the working of mechancial execution system of the asphalt paving in the constructing ofCheng-Yu expressway. This paper analyzes the working law of asphalt mixer,dump trucks and asphaltpavers,and gives a anailable mathematical description of the law. References | Related Articles | Metrics

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Mechanical Combination & Working Quota in Mechnical Execution System of Asphait Paving(Ⅰ)── Working Law &Mathematical description of Asphalt“Mixing-Spreading-Paving” Guo Xiaohong,Guo Jiayin,Du Zhende 1994, 13(4): 17-23.  Abstract ( )   PDF (346KB) ( )   By the working of mechancial execution system of the asphalt paving in the constructing ofCheng-Yu expressway. This paper analyzes the working law of asphalt mixer,dump trucks and asphaltpavers,and gives a anailable mathematical description of the law. References | Related Articles | Metrics

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Discussion on Relationships between Geological Environments and Waste-waterings of Highway in Sichuan Area Chen Hongkai,Tang Hongmei,WuChengping,Bei Zhipei,Hu Deyuan 1994, 13(4): 24-33.  Abstract ( )   PDF (557KB) ( )   This paper mainly discusses the basic relationshipe between geological environments and waste-wa-tering of highway in Sichuan area. The results identify that:(1),the rock group composed of hard-soft mid-thick bedded limestone or dolomite with Sand-mudstone phyllite, and slate and the rock 8roupcomposed of hard-soft thin-mid-thick bedded sand-mudstone,limestone and mudstone are the groupes oc-curing wastes easily,whose potential precentage to trigger the waste is 63.6%,and(2),the sectionsto cause the waste always develop in the crossing sites of gecatructures or in the sites paralleling to thegeostructures,whose frequence for highway to occur waste-watering are 41.7%and 58.3%respec-tively.The results(v. S)will have important values in the protects and constructions of highway insichuan area. References | Related Articles | Metrics

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Researches on Developmental Mechanism of Base-wasting of Highways in Mountain Area一Taking Base-wasting of Highways in Sichuan Area as a Example Chen Hongkai,Tang Hongmei,Bei Zhipei 1994, 13(4): 34-40.  Abstract ( )   PDF (434KB) ( )   Base-wasting of highways,one of the typical wastings of highway in mountain area,is quitewidespread in Sichuan area, On the basis of the researches about base-wasting of highways in Sichuanarea,this paper canvasses the basically developmental mechanism of wasting.The wasting can be divid-ed into four types,,i.e. Scouring-downcut,deforming-push,shear rupture and hitting rupture,TheclasSification has important interests in the theory and application for the prevention and cure of wast-ing in mountain area. References | Related Articles | Metrics

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Mathematics Simulation and Programming for Hydraulic Calculations of Waterway Regulation Engineering Cheng Changhua,Xu Guangxiang,Yu zhuohua 1994, 13(4): 41-47.  Abstract ( )   PDF (406KB) ( )   An optimizing program,including calculating and drawing,has been designed in this paper for thehydraulic calculations of waterway regulation projects. It is verified with the finished chuangjiang wa-terway regulation projects and can be broadly applied to the practical engineering. References | Related Articles | Metrics

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Influence on Water-Surface-Profile at the Reach of River with Spur-dike Xu Guangxiang,Cheng Changhua,Liu Jianxin 1994, 13(4): 48-53.  Abstract ( )   PDF (340KB) ( )   In this paper,a lot of test data of stage varying with width contraction by dike has been obtainedby experiments, including many sets of discharge and and contraction percentage of area,On the basis of analysing changes of stage at the reach of river,relationships between changes of stage at upetream anddownstream reach and contraction percentages of area have been given. By comparsion our cwn calcula-tion with the teet dam-up value at upotream section and the calculation value of others,the result in thispaper is relatively satisfactory,Simple formula for eetimating length of upstream dam-up has been alsomade. References | Related Articles | Metrics

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Influence of Channel Bed-Changes to Velocity Distribution Liu Jianxin;Cheng Changhua 1994, 13(4): 54-60.  Abstract ( )   PDF (380KB) ( )   Based on the special model test,the energy transtormation of flow vertical dispersion,characteris-ties of hydarul ic-jump shape, formation of whirlpool zone and the in tersecting face between upper flowand whirlpool zone are investigated.The results show:(1)changed-pool is the main cause of energytransformation;(2)hydraulic-jump shape is relevent to Z(pre-pool depth) and H(pool-ridgehigh);(3)whirlpool scope,shape and strengenth are relevent to Z,H and L(pool length);(4)intersect-ing face change show a distinct regulation,The study gives some uesful data for the waterway regula-tion and canai engineering. References | Related Articles | Metrics

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Influence of Channel Bed-Changes to Velocity Distribution Liu Jianxin,Cheng Changhua 1994, 13(4): 61-67.  Abstract ( )   PDF (390KB) ( )   Based on the special model test,the energy transtormation of flow vertical dispersion,characteris-ties of hydarul ic-jump shape, formation of whirlpool zone and the in tersecting face between upper flowand whirlpool zone are investigated.The results show:(1)changed-pool is the main cause of energytransformation;(2)hydraulic-jump shape is relevent to Z(pre-pool depth) and H(pool-ridgehigh);(3)whirlpool scope,shape and strengenth are relevent to Z,H and L(pool length);(4)intersect-ing face change show a distinct regulation,The study gives some uesful data for the waterway regula-tion and canai engineering. References | Related Articles | Metrics

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On social Environmental and Economical Benefit of Urban Traffic Mangement and Supervision System Project Li Shuqing,Li Zhengyi 1994, 13(4): 68-77.  Abstract ( )   PDF (528KB) ( )   This paper, basing on the preeess of Traffic Management and Supervision System Project ofChongqing City,has studied the evaluation index system, survey method and benefit calculation modelof Social,environmental and economical benefit of urban traffic management and supervision systemproject. References | Related Articles | Metrics

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Numerical Analysis of Reinforced Earth Retaining Structure Shi Minlei,Yao Dailu 1994, 13(4): 78-84.  Abstract ( )   PDF (404KB) ( )   This paper deals with application of nonlinear finite element method to the analysis of a rein-forced earth wall with sand backfill reinforced with polyropylene stripe,Numerical calculations are com-pared with the results of in-situ obeervations,The analytical results of the wall rupture surface show asimilar condition with that of the classical rankine failure plane. The resulting earth pressure shows afamiliar linear distribution and the eatreal pressure at the base of the wall is less than that obtainedfrom the classiCal theory. Noreover,special attention is paid to the effect of the dilatancy property. References | Related Articles | Metrics

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Computation of a Continuous Rib Arch Bridge in Consideration of Horizontal Distribution of Load Wu Bo 1994, 13(4): 85-90.  Abstract ( )   PDF (316KB) ( )   Nowadays the computation theory of continuous rib arch bridge in consideration of horizontal dis-tribation of load is not researched in considerable detail by engineers and scholars. Basell on the designof Jinglan Bridge in Liuzhou, this paper puts forward a computation method of continuous rib archbridge in consideration of horizontal distribution of load.The mothed is considerably simple and useful. References | Related Articles | Metrics

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System Simulation of Subgway Station Luo Xia,Gao Shilian 1994, 13(4): 91-95.  Abstract ( )   PDF (279KB) ( )   In order to find out the optimal design of subbway station ,we have developed a simulating modeland related soflware,The theories of random service,network and dynamic planning are adopted to ana-lyze the passenger’s floating process in subway station,and the intensity equation of passenger(in orout)and time equation of state replace are obtained, According based on these equations,a commonsoftware is set up for system simulation of subway station. References | Related Articles | Metrics

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An Accurate Solution for Middle-Thickness Plate Bending on Homogeneous Elastic Semi-Infinite Space Type Foundation Xia Yongxu,Zhai Wuquan 1994, 13(4): 96-102.  Abstract ( )   PDF (333KB) ( )   An accurate solution of the bending problem for a middle thickness circular plate under a centricconcentrated load with free edge on a foundation of homogeneous elastic semi-infinite space type is ob-tained and numerical examples are givern in this paper. References | Related Articles | Metrics

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Resonances and Global Birurcations in Superlattice System Luo Shuyu,shao Mingzhu 1994, 13(4): 103-110.  Abstract ( )   PDF (381KB) ( )   The resonances in a superlattice system are discussed by the nonlinear theory,and the global bifur-cations are ivestigated using MeInidov method.It shows that resonance channeling and resonancedechanneling will exist in the system, when the path of a perticle through out a layer equals to nλ and(2n+1)λ/2。 References | Related Articles | Metrics

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A Study on Intelligent Vehicle Fault Diagnosis System ANN-based Yan Lei,zhou Lingling 1994, 13(4): 111-117.  Abstract ( )   PDF (362KB) ( )   A intellisent vehicle faul diagnosis system ANN-based has been developed and related self-learn-ing algorithm of the syStem has been given Comparing with ES of vehicle fault diagnosis,the ANN-based dlagnosis system for Vehicle fault is better in Knowledge representation and inference procedureA actual ANN-based intelligent diagnosis system for vehicle motor faults has been designed,which in-cludes two hidden layers,The network has been trained for 500 times using 24 groupe of trainin8 vec-tor pairs,the results show that the success rate for fault diagnosis is more than 90%; References | Related Articles | Metrics

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Parameter Analysis of Controlled Differential Transmission Unit Wu Yongxiu 1994, 13(4): 118-126.  Abstract ( )   PDF (481KB) ( )   The paper is aimed to study certain issues of transmission parameters of controlled differentialtransmission unit,Geometric analysis and related theory are applied to obtain the characteristic diagramwhich shows the motion state of the unit and illustrates the conditions,scope and mutual relations sub-jected by the transmission parameters. Through derivation of the diagram the transmission parametersneeded can be obtained. The analytic method, simple and visualized, can serve as a reference for designing the controlleddifferential transmission unit and analysing its characteristics. References | Related Articles | Metrics