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15 October 2005, Volume 24 Issue 5 Previous Issue    Next Issue

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Research on brittleness wreck of prestressed concrete box-beams ZHOU Rui ，ZHOU Zhi-xiang ， SHAO Xiao-kang ， SONG Lei 2005, 24(5): 1-4.  Abstract ( )   PDF (233KB) ( )   Based on the experiment of a 30m-span prestressed concrete box-beam, the brittleness destroy when load less then high-point one has been analysied. It is suggested that the disadvantaged effect of reaction from the prestressed steel to the box because of the distortion must be numbered in the prestressed concrete box-beam which prestressed steel was placed in the soleplate.And based on this theory, a suggested computationsal formula of the thickness of the safeguard concrete above the prestresse References | Related Articles | Metrics

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The project design for repairing and strengthening of the reinforced concrete beam of the Yaan bridge CAO Lie-fang,ZHOU Zhi-xiang 2005, 24(5): 5-9.  Abstract ( )   PDF (181KB) ( )   In city development of economy and structre bring traffic and carrying capacity of vehicle on increasingly. The reinforced concrete beam of the YaAn Bridge couldn’t bear actual load. In order to improve bearing capacity of the YaAn Bridge,augment the steel ratio of the reinforced concrete beam. In this paper ,the project design for repairing and strengthening of the reinforced concrete beam is introduced References | Related Articles | Metrics

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A special application of temporary steel bridge in heavy-cargo transportation QIAN Hong，MENG Yun，ZHANG Hui-li，LIU Yah-ke 2005, 24(5): 10-13.  Abstract ( )   PDF (203KB) ( )   There are 120 bridges and culverts in the way of the heavy-cargo transportation of Kaixian Baihe Powerplant, Chongqing,57 bridges of them were used the co-bearing pass program of Prestressed Temporary Steel bridge combined with Partly Bearing Pier.The pass program saved much consolidating cost.The paper introduced the details of the program to deal with the less stiffness of 20m span Prestressed Temporary Steel bridge and the whole calculation of the design References | Related Articles | Metrics

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Application of fuzzy comprehensive evaluation method in arch technology condition ZHANG Yong-shui 2005, 24(5): 14-17.  Abstract ( )   PDF (150KB) ( )   Through summing up main defects of arch, check items,standard and weight number of arch technology condition are defined. the paper estimated classification of arch technology condition. Providing a new method of assessment arch technology condition for maintainer References | Related Articles | Metrics

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Research on the prediction of stable displacement and unstable time on highway tunnel XU Lin-sheng 2005, 24(5): 18-20.  Abstract ( )   PDF (159KB) ( )   According to the features of displacement-time curves, we use grey Verhulst model of creature increase to forecast the stable displacement and use Verhulst inverse-function model to forecast the unstable time of highway tunnel surrounding rock. Examples are applied to check and prove the prediction models,the construction is controlled References | Related Articles | Metrics

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Concerning structural research of asphalt substance state JING Yan-ping 2005, 24(5): 21-24.  Abstract ( )   PDF (167KB) ( )   This paper according to different appearance state and its property of asphalt under the different environment temperature condition, by the GPC, DMA and IR to analyze , bring upped the new viewpoint to asphalt molecular structure, the Substance state structure of asphalt, expounded the variety relation of the structure and temperature of asphalt from the asphalt molecule lay References | Related Articles | Metrics

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A Rustics opinion on ductility of SBS modified asphalts YUAN Jian—an 2005, 24(5): 25-28.  Abstract ( )   PDF (211KB) ( )   In this paper, significance of ductility of SBS modified asphalts is explained through contrast difference in ductility of modified asphalts and asphalt. There is some discussion about SBS modified asphalts mechanism, and several factor that effect on ductility of SBS modified asphalts is analyzed in this paper References | Related Articles | Metrics

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Research on nonlinear property and granular cushion modulus of granular cushion asphalt pavement LI Hai-yuan，ZHENG Chuan-chao 2005, 24(5): 29-33.  Abstract ( )   PDF (241KB) ( )   In the paper,based on the multi-layer elastic system theory and nonlinear material constitutive model of granular cushion,the resilient moduli of granular cushion is analysed.Simultaneously,the computing program is designed and programmed,which computes the resilient moduli of special points in granular cushion.In addtion,the contour of the resilient moduli are drew in granular cushion.Eventually,finite element program is employed to carry out the linear analysis and nonlinear analysis of semi-r... References | Related Articles | Metrics

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Framework design of pavement management dystem nased on GIS LI Ming ，LI Tei-qiang 2005, 24(5): 34-38.  Abstract ( )   PDF (216KB) ( )   According to design principle and function requirements of system, based on simple introduction on the definition of pavement management system and geographical information system, framework structure of system was designed. At the same time, structure and function of module of the system were described in detail References | Related Articles | Metrics

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Application of ground penetrating radar in the survey of the layer thickness in road DENG Chun-wei，XU Hong-WU，SHAO Yan 2005, 24(5): 39-41.  Abstract ( )   PDF (170KB) ( )   This paper briefly introduces the application of Ground Penetrating Radar(GPR) in testing the subsurface layers thickness. By testing example, it not only tells us that this method is true in practice, but also gives us a new way in testing subsurface layer thickness References | Related Articles | Metrics

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Numerical simulation study on the law of earth pressures on the culvert beneath high embankment and the factors of effect on the earth pressures YANG Xi-WU 2005, 24(5): 42-47.  Abstract ( )   PDF (259KB) ( )   The law of earth pressure on the culvert changing with the height of fills and the arch action are investigated by model test and numerical simulation. The results of model testing and numerical simulation indicate that as the fills on the culvert reach a higher of height the arch action will come and the earth pressures increase non-linearly with the height of fills, and in addition the earth pressures can be indirectly affected by the boundary condition of culvert sitting . It is also confirme References | Related Articles | Metrics

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Research on performance test of lime-flyash stabilized coal spoil used as the base of pavement HUANG Wei-rong1， CHEN Kai ， HE Zhao-yi，RAN Long-fei 2005, 24(5): 48-52.  Abstract ( )   PDF (202KB) ( )   In this paper, physis-mechanics property of lime-flyash stabilized coal spoil is studied . through the research, lime-flyash stabilized coal spoil and lime-flyash stabilized coal spoil and shale soi used as pavement base of county road in lacking aggregate district is superiority and reasonable References | Related Articles | Metrics

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The influence and analyse of fly ash with high sulphur content on expansion cracks of lime-fly ash base GAO Yan-long ， HUANG Xing ， LIU Feng 2005, 24(5): 53-55.  Abstract ( )   PDF (194KB) ( )   The sulfur amount of fly ash has a substantial influence on the intensity and stability of road base course. Elicited from an engineering case, this paper discusses and analyzes the mechanism of road base course expansion cracks,intensity decrease, and final destruction caused by high sulfur content fly ash, which is testified by indoor and outdoor experimentations. And it is also given as a reference of others professionals References | Related Articles | Metrics

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Research on performance test of inorganic cement stabilized coal spoil used as base of county road XU Ran-an ，HUANG Wei-rong ，CHEN Wei ， HE Zhao-yi，RAN Long-fei 2005, 24(5): 56-61.  Abstract ( )   PDF (260KB) ( )   In this paper, physis-mechanics property of cement-flyash or cement or lime-flyash stabilized coal spoil is studied and construction report of experimental road. through the research, inorganic cement stabilized coal spoil used as pavement base of county road in lacking aggregate district is superiority and reasonable References | Related Articles | Metrics

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Research on control design case to sliding unstable rock in FEM TANG Hong—mei 2005, 24(5): 62-64.  Abstract ( )   PDF (173KB) ( )   Hitherto, as one of typical geologic disaster, unstable rock is the coarsest in studies, especially it is in description or semi-quantity stage that identification and classification of unstable rock, stability analyses and control effectively. According to unstable model unstable rock can be classified into three, i.e. sliding unstable rock, toppling unstable rock and falling unstable rock. Up to now, three case usually are provided in stable analyses, i.e. case 1(composed of weight of unstable References | Related Articles | Metrics

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Current Situation of determination methods of shear strength parameters of rock-mass discontinuities and new thoughts LIU Ming-wei, ， FU Hua， WU Jin-liang 2005, 24(5): 65-67.  Abstract ( )   PDF (162KB) ( )   The paper roundly elaborates current situation of determination methods of shear strength parameters of rock-mass discontinuities and synthetically comments. With the progress of experimental instrument and calculation technique, aiming at different engineering demands and limit conditions (funds, techniques), it presents the new thoughts of determination methods of shear strength parameters of rock-mass discontinuities References | Related Articles | Metrics

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Review of Solution Methods of Seepage Free Surface of Slope GUAN Ming-fang．CHEN Hong-kai， 2005, 24(5): 68-73.  Abstract ( )   PDF (332KB) ( )   Certain method of seepage free surface is main contents of seepage calculation, this text synthesizely discuss current domestic and international method of seepage free surface, to the analyze method, the number method, the seepage model method, having no the unit method proceeded the analysis and compares, aiming at the current applied extensive number method, limited unit method particularly, this text proceeded to expatiates it Special References | Related Articles | Metrics

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Experiment of compacted loess disintegration LI Jia-chun，TIAN Wei-ping 2005, 24(5): 74-77.  Abstract ( )   PDF (190KB) ( )   Analyzed the influence factors of soil disintegration under water from point of view of microcosm, it is pointed out that moisture and level of compaction are two main parameters controlling soil disintegration. With SOIL DISINTEGRATION INSTRUMENT developed by Li Jia-chun, we finished series of experiments of compacted loess disintegration. It was presented that disintegration rate decreased with the moisture and level of compaction increasing until the maximal disintegration moisture. Soil disi References | Related Articles | Metrics

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Analysis of the flexible system for protecting highway slope and its technology ZHENG Zhi-neng， ， LING Tian-qing ，DONG qiang 2005, 24(5): 78-81.  Abstract ( )   PDF (209KB) ( )   The specification of flexible system for protecting highway slope which was compiled by the authors have issued in 2004. Its components, design and construction of the system are set forth by this article in order to promote the wide use of the system References | Related Articles | Metrics

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Study on deformation of the reinforced earth retaining wall ZHENG Zhi-neng , ，LI Tei-qiang ， DONG Qiang 2005, 24(5): 82-83.  Abstract ( )   PDF (145KB) ( )   The deformation and the stress of the reinforced earth retaining wall are discussed in this article. It is found that stress is affected by many factors and it has a nolinear distrubation characteristic. And several models of lateral failure of the reforced earth retaining wall are summarized, and the article gives out the reanson of each failure model References | Related Articles | Metrics

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A pursuit of planting methods of vetiver grass at different sections of highway XU Ji-jiang，XIAO Yu-lin ，XU Hui 2005, 24(5): 84-87.  Abstract ( )   PDF (184KB) ( )   Planting methods of vetiver grass at highway slope mostly are the contour planting and un-sesonal planting. There are no relatively good planting method to one single highway. With different soil、inner and external、bend of sections of highway、upper slope and down slope of sections of highway、how to plant at same high earth fill slope of sections of highway. Seeding to the previous four kinds of sections of highway, author through fertilizing diverse manure, discussed certain. Engineering measure References | Related Articles | Metrics

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The best regressive analysis and application in engineering XU Xi，ZENG Fan—xiang 2005, 24(5): 88-90.  Abstract ( )   PDF (119KB) ( )   Making regressive analysis in applications, the regressive models often have errors. By way of advancing regressive precision making right regressive forecast and the expiating errors of investigating regressive models, This article made a method about checking and expiating models. lt is one of the best ways for regressive analysis References | Related Articles | Metrics

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Culture of modern architecture vs traditional cultural venation LUO YUan 2005, 24(5): 91-92.  Abstract ( )   PDF (154KB) ( )   Modern architectural design should be sustainable, comprehensive, and have Multiform. There are also multiform and diversities in its ploys and ideas. However, there is no exception to have the cultural stigmas or cultural marks in any diverse or distinctive designs. Traditional design emblems and elements are fading away. A lot of designers try hard to seek their own positions in Chinese and foreign cultures. In this paper, we proposed that it should be designers’ persistent goal to create a mo References | Related Articles | Metrics

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The management and control of cost of local road network in Xiangfan City ZHAO Yan-xin ，WANG Shou-XU，CHEN Fei-jie ，XIE Fu-jun 2005, 24(5): 93-96.  Abstract ( )   PDF (238KB) ( )   Along with the local road network construction development of the Xiangfan City, the scale of investment is becoming more and more big. According to measuring data of road network post evaluation. This article not only answers the problems that how to control effectively the investment scale and benefit and do well management work of the cost of road network build. But also discusses the cost management and method of controling investment for city and county’s road network construction References | Related Articles | Metrics

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The fulfiling research on the cost control of design stage about Xinjiang highway engineering CHEN Fei-jie ，CHEN Chang-WU，XIE Fu-Jun 2005, 24(5): 97-100.  Abstract ( )   PDF (234KB) ( )   Although the highway construction of Xinjiang municipality was late commenced, it is investment scale increasingly increase, how to control cost in reason and dominate whole process of engineering construciton is becoming more and more important. This article startes from highway design work. And its aim is to research existent problems and solving methods. References | Related Articles | Metrics

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Deducing of new method application in economical transportation distance of road foundation soil and rock LV Quan-ju 2005, 24(5): 101-103.  Abstract ( )   PDF (141KB) ( )   The volume of soil and rock is a major part in Transportation engineering, the reasonable dispenses of digging and filling could lower cost and promote income, the economical transportation distance is also a major part in dispenses of soil and rock. For this article, considering shortage of land resource, deduces a modified formula about economical transportation distance, and apply for dispenses of Han-Xiao High way, so a good conclusion is available References | Related Articles | Metrics

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The equilibrium analysis model include effects of bike and walk LI Mao-sheng， 2005, 24(5): 104-109.  Abstract ( )   PDF (270KB) ( )   The effects which traffic flow suffer from bike and walk have two attributes of stochastic and predictability. The parts of predictability attributes would cause predictable network’s link degradation and is different from perceptive errors of stochastic use equilibrium. In this article the cause of link travel ability degrade is classified into two parts: over-travel-flow degrade link travel ability and other reasons come from outside of traffic flow. Further more en-route travel time is classi References | Related Articles | Metrics

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Research of the corporation strategy ecological system ZHOU Gao—ping，DU Cheng，ZHANG Yi 2005, 24(5): 110-112.  Abstract ( )   PDF (201KB) ( )   Strategy ecological system is the research core of strategy ecology. This paper researches the composition, the structure and the evolvement of strategy ecological system. It provides a important tool to identify the construction and the development stage of the corporation References | Related Articles | Metrics

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Optimal incentive mechanisam with asymmetry information in road transportation market management LI Jian—zhang 2005, 24(5): 113-118.  Abstract ( )   PDF (289KB) ( )   This paper investigate the optimal incentive contract with adverse selection and moral hazard in road transportation market management.The result has been used to analyse incentive effect for one type of monitoring form in management of transportation qulity References | Related Articles | Metrics

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Transaction costs and optimal mechanisam design for auction of civil engineering LI Jian—zhang 2005, 24(5): 119-122.  Abstract ( )   PDF (180KB) ( )   Abstract：This paper investigate the optimal mechan isam design for auction of civil engineering in the existen ce of transaction costs．The conclusion is that the optimal auction shoud accept the combine scoreboard．Th e specil case is that the lowest bidding pricing wins the bid for the nonexistenc oftran saction costs References | Related Articles | Metrics

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Bt project risk analysis WAN Xian-jin 2005, 24(5): 123-126.  Abstract ( )   PDF (229KB) ( )   In this article, universal questions are discussed and analyzed in the construction process of municipal infrastructure BT projects, risk prevention and control methods are put forward. References | Related Articles | Metrics

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Development of in-use vehicle inspection and maintenance database administration system SHU Hai-bo ， SHAO Yi-ming ，TAN Dan-ping 2005, 24(5): 127-129.  Abstract ( )   PDF (245KB) ( )   Inspection and maintenan ce program of in—USe vehicle is the valid method of in-USe vehicle emission contro1．The information administration system is a key to guaran tee I／M program implementation．Th is paper passes to study the I／M inform ation management system inside database construction an d need the inform ation problem．establishing the I／M inform ation database,combined to develop the head application procedure．The system service capacity such as the increasing ofdata,renews, inquiry an d statistics，satisfy the fast,safety，the dependable inform ation han ds over with each other purpose，gall guarantee the I／ M program puts effectively into practice． References | Related Articles | Metrics

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River model study of sailing condition of the cut-off works scheme for Guangyuan reach of Jialinjiang river ZHAO Zhi-zhou，DENG Gui-xiang，ZHOU Hua-jun，XIE Yuan-Hua 2005, 24(5): 130-134.  Abstract ( )   PDF (222KB) ( )   The GuangYuan reach of Jialinjiang River form with continuous curved section.The Periodical flood didn’t pass unimpeded,cause huge lose of the people aside the reach. For raising the city’s ability of the flood-control ,the multi-purpose regulations scheme are investigated on the basis of measured date in river model test. The project alternative divide to two kinds, i.e. unitary shortend section of river,and two chanel to coexist. Flood-control of the river, navigation and evolution of the rive. References | Related Articles | Metrics

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The study of ship model experiment on chengbeizun reach in Yangzi river shoal regulation CAI Chuang,CAI Ru—zhe 2005, 24(5): 135-139.  Abstract ( )   PDF (254KB) ( )   Chengbeizun shoal lies in Luzhou-Chongqing Reach upstream Yangzi river, near Mituo town of Luxian county. It is a well-known curve and shallow dangerous shoal, adjacent to a sharp bend with a radius 220m upstream tightly. The ship model experiment on Chengbeizun Reach in Yangzi River shoal regulation is introduced, it shows both the scheme of 80 and 60 m channel width can be true of navigation by 1000t ship teams. The velocity in channel 80m width is faster slightly than channel 60m width, so sh References | Related Articles | Metrics

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Flood forecasting system based on Browser／Server structure WANG Miao-lin, ， FU Hua 2005, 24(5): 140-142.  Abstract ( )   PDF (193KB) ( )   It was concluded that the flood forecasting system based on the Browser／Server structure is predicted to be the future trend by comparison with the Client／Server structure．Th e flood forecasting system based on Browser／Server structure is designed an d applied in the Jiangkou hydropower station in Wujiang Basin．The component and characteristics of the system and the design scheme were introduced References | Related Articles | Metrics

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Actuality and development technique of ships’ prevention collision in the reservoir district DING JI-min， YANG Jian-guo 2005, 24(5): 143-147.  Abstract ( )   PDF (259KB) ( )   Implementation of Ships’ Routeing Scheme indicates that technology of the vessels’ prevention collision obtains a great breakthrough from the angle of the maritime safety management in the reservoir of three gorges. It provides the basic that future technique for preventing collision will develop toward ITS. This text discusses the present condition and development about the ships’ preventing collision technology according to the past technique in the reservoir of three gorges References | Related Articles | Metrics

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The ecological revetment and It’s development prospect XU Fang， YUE Hong-yan 2005, 24(5): 148-150.  Abstract ( )   PDF (217KB) ( )   Revetments are not only the important engineering measures in the planning of controlling river regime, but also the segments of flooding control system. The revetments can be classified many forms according to the difference of layouts, structures, types, materials and the relations with the flow. In the paper, the characteristics and application principals of the ecological revetment are analyzed. Its development prospect is discussed and studied, which will benefit to the research and prevent References | Related Articles | Metrics

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Deal with some main points in structural design of ship based on CCS rules YU Jia-hu 2005, 24(5): 151-153.  Abstract ( )   PDF (164KB) ( )   Usually, structural design of merchant ship is achieved to rely on CCS Rules. It is necessary to pay attention to dealing with some key technical problems meeting in ship design properly for the, some of my viewpoints on ship design practice are described in this paper References | Related Articles | Metrics

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The evolution of river bed and the scheme of water way regulation for tunaozi shoal on the Sichuan section of the Yangtze River FU Hua， LUO Hong ， YANG Yun-yun， HUANG Chao 2005, 24(5): 154-156.  Abstract ( )   PDF (191KB) ( )   Tunaozi shoal is one of the famous sediment depositing shoals on the Sichuan section of Yangtze River. It’s on the fluctuation backwater area of the Three Gorges Project. While it is completed, the problem of the accumulative deposition will be more and more severe as deposited sediment on high-water period will not outwashed completely. In this study the regularity of erosion & siltation of the reach under natural condition on 135m, 156m,175m water level. The regulation works on the shoal a... References | Related Articles | Metrics

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The study of model-driven instruction plan in intelligent tutoring system LI Yi-cai，ZHANG Xiao-zhen 2005, 24(5): 157-161.  Abstract ( )   PDF (233KB) ( )   Intelligent tutoring system is an important domain in computer technology and artificial intelligence. It is an important researching direction to establish intelligent tutoring system that can tutor student individually. This paper proposes a new knowledge model and curricula architecture model based on constructivism, and uses it to drive the designing of instruction plan. This method is successful in experimental system References | Related Articles | Metrics

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Prediction and analyse for structure human resources XIA Li 2005, 24(5): 162-163.  Abstract ( )   PDF (85KB) ( )   Application Markov model, the structure of human resources is analysed and forecasted. The paper is provide scientific basis and application reference for generalizing Marlov model and prediction of talent structure References | Related Articles | Metrics

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The existence of periodic solutions for a group of delay partial functional differential equations FENG Chun 2005, 24(5): 164-166.  Abstract ( )   PDF (89KB) ( )   In this paper, we inverstigate a group of delay partial functional differential equations by proving two theorems. For A.F haoing different properties we assert the existerce of periodic solution for these equations and their respective integral equations References | Related Articles | Metrics

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Comparison of two methods of proof on Radon-nikodym theorem HU Bi-jin 2005, 24(5): 167-168.  Abstract ( )   PDF (75KB) ( )   In the paper, the proof of R．一N．theorem is discussed by using Riesz·Banach theorem．The proof of the theorem in[I]is improved．There are two methods of proof on R．·N．theorem ．which have diferent ways and it is worth to research References | Related Articles | Metrics

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Theorems about equivalent s-orthogonal matrices ZHANG Bo-chun 2005, 24(5): 169-170.  Abstract ( )   PDF (67KB) ( )   In this paper，the decomposition of a o~hogonal matrix into the products of Householder matrices are discussed．BaSed on this equivalent theorems about S-orthogonal matrices are given an d proved References | Related Articles | Metrics