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15 August 2005, Volume 24 Issue 4 Previous Issue    Next Issue

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The effect to the dynamic charecteristics of long-span trussed combination arch bridge by damage of the structure SONG Lei ， ZHOU Zhi-xiang， ZHOU REd 2005, 24(4): 1-5.  Abstract ( )   PDF (294KB) ( )   Based on the dynamic test of Yanjin river bridge in Guizhou province,the paper calculates the dynamic charecteristics of long-span trussed combination arch bridge with damage and without damage,and analyzes the effect of the damage of the structure on the dynamic charecteristics of trussed combination arch bridge References | Related Articles | Metrics

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Analysis with determining cable tension of cable-stayed bridges DUAN Bo， ZENG De-tong， LU Jiang 2005, 24(4): 6-8.  Abstract ( )   PDF (181KB) ( )   It is summarized detailed several main methods on examining cable tension today. After that, in the text, it is discussed some theory problems of the cable tension by vibration method, which is applied the most extensively, in the fact of principle and applying. Finally, it is raised some main thinking to deal with mentioned problems References | Related Articles | Metrics

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Mechanism study of a gravity abutment crack ZHOU Shui-xing， HU Juan， ZHANG Min 2005, 24(4): 9-12.  Abstract ( )   PDF (178KB) ( )   Aiming at the case that a gravity abutment often cracked during construction and use stage, the abutment dimension and the appropriate for condition have been discussed according to the current specification. The formulas of soil pressure with the limited slide surface of wall were given in this paper. The value of soil pressure was acted on the forward wall and side wall as surface load. The numerical analysis by Nastran finite element program has been made for the actual gravity abutment. The References | Related Articles | Metrics

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Cracking control of PC continuous box girder bridges form the design point of view SHI Ying, ZHANG Jian-qun 2005, 24(4): 13-18.  Abstract ( )   PDF (314KB) ( )   The cause that cracking procreate of PC continuous box girder bridges are many, In the final analysis,There are design?construction?manage and material. And that the design is mostly root, Therefore ameliorate the design thinking and Structure, so that reduce or control crack References | Related Articles | Metrics

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Research on web cracking control of long span PC box girder bridge LIU Shah-hong ， QIAN Yong-jiu 2005, 24(4): 19-22.  Abstract ( )   PDF (201KB) ( )   How to control the web cracking of long span prestressed concrete(PC) box girder bridge from two aspects of design and construction effectively is discussed in this paper, and the partial test results of prestressing on longitudinal strands of continuous rigid frame bridge under construction is given out. It is urged to improve the prestressing procedure of jaw vice anchorage and the defects of prestressing facilities. The technique of unbonded tendons on vertical prestressing becomes an effecti References | Related Articles | Metrics

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The application of the finite element to the bridge deck overlay mechanics analysis ZHONG Hai-hui WANG Ji 2005, 24(4): 23-26.  Abstract ( )   PDF (226KB) ( )   The Finite Element Analysis program software is one of the widely used in the bridge engineering. Through using and understanding the software, the writer uses it to prove the stress state when the bridge deck overlay imperfectly contacts with the bridge deck and prove the impact of the ratio of the bridge deck overlay material elasticity module to the bridge deck elasticity module on the bridge deck overlay stress References | Related Articles | Metrics

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Dynamic analysis of the light-rail-station viaduct of Chongqing Yuanjiagong induced by moving vehicles SHAN De-shaIl， LI Qiao， YANG Xing-wang 2005, 24(4): 27-30.  Abstract ( )   PDF (187KB) ( )   In this paper, a study on dynamic analysis of light-rail-station viaduct under moving vehicles is presented. Moving vehicles are idealized as a number of moving loads. The overhead and multi-stories’ light-rail-station viaduct is modeled by the three-dimensional finite element model. A fully computerized approach is used to assemble the equations of the motion of the dynamic system. Then based on these models and applying the time-integration to the dynamic system, the equations of motion are ef References | Related Articles | Metrics

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Analysis of concrete aging effect in long-span RC arch bridge ZHANG Yong-shui 2005, 24(4): 31-34.  Abstract ( )   PDF (178KB) ( )   The aging effect of concrete influences structural behavior of long-span arch. the effects of creep and shrinkage of concrete on inner force, deformation and stress redistribution of main arch, the effects of shrinkage of concrete on self-stress of concreting in lifts are discussed-for example, Xugou bridge. The results can be reference for other bridges. References | Related Articles | Metrics

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The rational evaluation system of damaged condition for aged cement pavement XIA Wen-jun ， XIE Xu-feng ， YANG Xi-wu 2005, 24(4): 35-39.  Abstract ( )   PDF (208KB) ( )   A rational method of evaluation for aged cement concrete pavement has an important effect on countermeasure of pavement maintenance. Compared the methods of PCI,HBL,LBL evaluation with the Fuzzy evaluating method, the advantages and deficiencies of all the evaluating ways are presented. With the purpose of establishing a further objective rational system to evaluate damaged concrete pavement, a operative method and index are given to provide theoretical basis for the rational pavement maintenanc References | Related Articles | Metrics

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Research on water damage of concrete pavement and how to resolve it QUAN Kai， CHEN Si-lai 2005, 24(4): 40-43.  Abstract ( )   PDF (177KB) ( )   This paper firstly analyses the phenomenon and reason why concrete pavement leads to water damage, then supply some ways to resolve water damage, such as how to deny water into pavement?how to let water out from pavement and how to strength the ability of base pavement which resists the water damage References | Related Articles | Metrics

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Study on the application of grading theory Cheng Zhong-da， YUAN Wan-jie ,， ZHENG D0ng-qi 2005, 24(4): 44-48.  Abstract ( )   PDF (195KB) ( )   By studying the maximum density curve theory,particle interfering theory and different grading calculus,the varying i method and calculating formula were put forward to grading design.Then the ranges of i were presented to AC-16,SMA-16 and Sup-12.5 according to contrast aggregate gradations from varying i method with AC-16,SMA-16, Sup-12.5 and skeleton dense structure gradation designed on particle interfering theory.Furthermore,it was verified by applying the varying i method to the grading des References | Related Articles | Metrics

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Control and evaluating of the compact quality of soil-stone embankment in highway HUANG Wei-dong， ZHAO Ming-jie， WEI Gang 2005, 24(4): 49-54.  Abstract ( )   PDF (243KB) ( )   Based on deformation controlling and density testing and wave testing technique, the compact quality of soil-stone embankment in Wushen-Hechuan highway was controlled and evaluated. The analysis results of testing dada show that wave testing technique is a simple and quick and economical embankment testing method in the compact quality controlling of soil-stone embankment References | Related Articles | Metrics

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Comprehension introduction about the earth pressure calculation theories for high embankment culverts in mountainous place YANG Xi-wu 2005, 24(4): 55-61.  Abstract ( )   PDF (383KB) ( )   Some main earth pressure calculation theories and test researching fruits for high embankment culverts are introduced and comments on the characteristics of these theories and fruits are given in the paper. Four subjects should be researched including the earth pressure theories and construction for high embankment culvert are suggested to improve the safety of structure of high embankment culvert and save money References | Related Articles | Metrics

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Analysis on the fatigue and flexure-tension resistant performance of semi-rigid roadbase material reinforced by soil engineering grid ZHI Xi-lan， HAN Bing 2005, 24(4): 62-66.  Abstract ( )   PDF (247KB) ( )   The flexure-tension resistant performance and flexural fatigue life of semi-rigid roadbase cement stablilized crushed stone medium beam is investigated experimentally in this paper. The influence on the stress?deformation and fatigue is comprehensively analyzed while soil engineering grid is laid at the bottom of semi-rigid base material .The results show that the Flexure-tension resistant performance and fatigue life is much more nicer than that of common semi-rigid base material References | Related Articles | Metrics

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Influence of clay contaminated aggregate on water stability of asphalt mixture ZHENG Xiao-guang， LU Wei-min 2005, 24(4): 67-70.  Abstract ( )   PDF (228KB) ( )   Moisture damage occurs primarily because of loss of adhesion between asphalt and aggregate. By analyzing data of water stability experiment, the paper discusses how clay contaminated aggregate influences water stability of asphalt mixture .The results indicate that the surface cleanness of coarse aggregate has an influence on the adhesion of asphalt .The clay in the fine aggregate reduces the water stability of asphalt mixtures. Baghouse dust with high plasticity index is detrimental to the asph References | Related Articles | Metrics

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Research on the aging of geosynthetics ZHENG Zhi-neng,， LING Tian-qing， DONG Qiang 2005, 24(4): 71-73.  Abstract ( )   PDF (192KB) ( )   The aging of geosynthetics is a problem concerned by civil engineers. In the article, the aging theory of geosynthetics, the influence factor and the aging law under each factor are discussed. After discuss, some disciplinarian of geosynthetics aging are obtained References | Related Articles | Metrics

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Prediction of the retaining rate of geosynthetics strength through using theory of reaction kinetics ZHENG Zhi-neng,， LING Tian-qing， DONG Qiang 2005, 24(4): 74-76.  Abstract ( )   PDF (146KB) ( )   It is a ultimate concern to predict the strength retain rate of geosynthetics. In the article, reaction kinetics, Arrhenius law and accelerated aging data are utilized to predict the retaining rate of geosynthetics strength References | Related Articles | Metrics

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The analysis of mountainous highway’s conceptions of landscape and ecosystem HE Bing， LI Zu-wei 2005, 24(4): 77-79.  Abstract ( )   PDF (211KB) ( )   According to the situations of recent years’ highway construction development, the pressure of ecosystem protection and construction cost increase, the income of mountainous highway decrease. The paper puts forwad the conceptions that how to penetrate in the phases of highway design and planning efficiently. The author calls on selecting routes geologically and environmentally, changing the economy-centered thoughts, and analyses the improper perspectives, raises some good ways and thoughts to s References | Related Articles | Metrics

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Highway landscape the local special feature design the solid example analysis HE Yue ． LU Bei 2005, 24(4): 80-83.  Abstract ( )   PDF (187KB) ( )   This text introduced the highway landscape the local special features the quest experience that design, and combine to aim at the solid example to design the inside the of special features local to make out now to highway landscape detailed study the analysis References | Related Articles | Metrics

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Research Oil numerical simulation of damage—firacture process of control fissure in unstable rock TANG Hong-mei ， YE Si-qiao ， CHEN Hong-kai , 2005, 24(4): 84-88.  Abstract ( )   PDF (300KB) ( )   Hitherto，unstable rock is the weakest one to study in disasters，speclany也咖 and fracture of control fissure under loads is one key technique in study ofdevelop mecl1anism ofumtable rock．Based Oil scale identification and也唧pst'anlete,l's solution,fdamage zone in control fi~-ure end，the allIhol'~make a lot of numerical simulationtO control fissure in FEN method under nature state，continue rRime~dl state and caith~ e b-'t~e．Spare constant offracture tenacity ofcontrol fissure in every loads eonslitute aIe o0m Irable with stabaity eoettieient of ilnst~ e roc References | Related Articles | Metrics

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Research on highway cost examination methods WANG Yuan-qing， CHEN Tong-sheng， LI Shao-yan 2005, 24(4): 89-92.  Abstract ( )   PDF (153KB) ( )   Through analyzing the present engineering cost examination methods, step-by-step comprehensive examination method, based on quantitative and qualitative analyses, was advanced, and data flow chart was constructed, meanwhile, an analytical analyzing method was applied to confirm index weight, and ascertain engineering resemble degree through add right Haiming distance, and choose resemble project. Finally, basing on the method, cost examination system was formed, and cost examination was carried References | Related Articles | Metrics

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Research on basic theory of the investment about highway construction bring along gross economy ZHANG Zhi-min， WANGYuan-qing， ZHOU Wei 2005, 24(4): 93-96.  Abstract ( )   PDF (180KB) ( )   In order to answer the effect of the economy crisis of Southeast Asia, our country carries out positive financial policy on the investment of highway construction to bring along the increasing of gross economy. But the research about highway construction investment dragging gross economy is not mature. On this basic, this paper analysis the relation of highway construction investment and gross economy and basic theory and establishes the foundation on the embedded research of highway constructio References | Related Articles | Metrics

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Macroscopic dynamic optimal model of traffic industry structure YAO Xin-sheng， LU0 Xia， WU BO 2005, 24(4): 97-100.  Abstract ( )   PDF (246KB) ( )   The structural component and influential factor are indicated, from the macroscopic, middle-scope and microscopic structural hierarchy, the reasonable structure and evolvement trend are analyzed; the objective and main measure of the structural adjustment of the traffic industry in our country are shown. Then, the macroscopic dynamic optimal model is founded, which offers a academic reference for the structural regulation of traffic industry in our country References | Related Articles | Metrics

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Questions discussion on BT model of municipal infrastructure projects WAN Xian-jin 2005, 24(4): 101-104.  Abstract ( )   PDF (193KB) ( )   In this article, universal questions are discussed and analyzed in the construction process of municipal infrastructure projects by means of BT model,and resolutions are put forward. References | Related Articles | Metrics

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A improvable method of calculation of inner revenue rate WANG Yu， Liu Wei， YAN G Zhuan-yun 2005, 24(4): 105-106.  Abstract ( )   PDF (79KB) ( )   usually, the calculative method of inner revenue rate is acquired by linear interpolation, It is easy to understand, but its error will be large. In this article, author bring forward a new non-linear iterative method. This method can improve calculating accuracy largely without additional calculation References | Related Articles | Metrics

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Analysis of traffic potential danger characteristics in Hongshuang segment of national highway 210 and their rehabilitating measurements ZHU Shun-ying， WANG Hong， ZHA0 Xin-cai 2005, 24(4): 107-109.  Abstract ( )   PDF (147KB) ( )   The traffic accidents phenomena happened in Hongshuang segment (Air Station Road) of National Highway 210 are representative of passageway roads in mountainous-cities. Author detailedly analyses its changes in traffic circumstance and traffic flow characteristics. And the potential danger factors and reasons of traffic accidents happened are particularly studied. In the end, some measurements to eliminate the latent dangers are brought forward References | Related Articles | Metrics

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How to accomplish the customer resource integration in logistics enterprises LIU Wei-hua， JI Jian-hua 2005, 24(4): 110-113.  Abstract ( )   PDF (179KB) ( )   This paper analyzes the importance of the customer resource integration in logistics enterprises, and summarizes the fail factors of customer resource integration from three procedures which is ’plan-act-supervision & control’. Then, it puts forward the four-side construction model to accomplish the customer resource integration, discusses the key factors including people, technology, procedures and customers. At last, this paper discusses the five basic steps to accomplish the customer reso References | Related Articles | Metrics

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Compare of regional freight volume forecast methods CHENG Li -fen 2005, 24(4): 114-116.  Abstract ( )   PDF (165KB) ( )   Based on the description of theory and process of freight volume forecast, the paper introduces and compares several typical regional freight volume forecast methods, and emphatically analyzes the principle of regional freight volume forecast based on industrial structure measurement. Empirical analysis indicates that the method preferred in paper is more effective than other micro freight volume forecast methods currently used References | Related Articles | Metrics

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Discussing about how to choose the link-banked structure of inland upright wharf XIE Dian-wu ， LIU Pu-jun， LIU Jian-guo， WANG Duo-yin 2005, 24(4): 117-120.  Abstract ( )   PDF (178KB) ( )   Through analysis on the type and characteristic of disaster in high-piled wharf after earthquake, the paper discuss how to choose the link-banked structure of inland upright wharf, and then puts forward a more reasonable one. So the using of this structure can advance the wharf’s ability of antiearthquake and application , and reduce the expense for maintenance. References | Related Articles | Metrics

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Predicting model of annual maximum water level WANG Miao-lin,， FU Hua, LIU De-chun 2005, 24(4): 121-123.  Abstract ( )   PDF (131KB) ( )   The change of annual maximum water level at Cuntan section in the Yangtze River was analyzed. It was found that an obvious decrease since 1970. Grey Markov Model was developed and used to analyze the change of annual maximum water level in the basin. And it was concluded that the predictions were coincident with the actual case. So the model can be spread and applied in the long-term hydrological predictions References | Related Articles | Metrics

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Research of the investment departure neural network prediction model of infrastructure project ZHOU Gao-ping， ZHOU Zhi， CHEN Yuan-xiang 2005, 24(4): 124-128.  Abstract ( )   PDF (215KB) ( )   Applying the theory of earned value management, the implementation phase investment departure of infrastructure project is depicted quantificationally in this paper. Then, applying the theory of neural network, the neural network prediction model of investment departure of infrastructure project is constructed. Using this model, the implementation phase investment departure of infrastructure project can be forecasted, and it provides basis for the investment risk early-warning References | Related Articles | Metrics

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The research of application of constructional engineering cost estimation by neural network ensemble ZHOU Qi-ming， WANG Miao， REN Hong 2005, 24(4): 129-132.  Abstract ( )   PDF (212KB) ( )   Engineering cost and main quantities are the important economy index evaluating construction projects. It is important to quickly estimate engineering cost and main quantities since July.1 2003 when the Bill of Quantity is put into practice in our country. In this paper, neural network ensemble, a new method, is presented to estimate the cost and main quantities. Matlab 6.1 is used in this research to analyze the evaluation model. It is accurate and valuable in practice testified by the prototyp References | Related Articles | Metrics

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An analysing on the situations and fetures of GIS’s application FENG Xiao ， CHEN Hua一 gang， LIU Guo-dong 2005, 24(4): 133-137.  Abstract ( )   PDF (258KB) ( )   The definition and genaral identities of GIS software or function are discussed, priciple schemes for GIS functions are researched. On the bases of functional comparing on functions between some knoun GIS softwares, some usefull suggestions are improved References | Related Articles | Metrics

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The design of control network control system based on LAN／Control Net／Fiddbus of hierarchy architecture LING Ying,， WANG Xiao-xu， LIU Chang 2005, 24(4): 138-141.  Abstract ( )   PDF (203KB) ( )   It is generally divided a8 3 layers to network architecture of control system for Large-seale workshope n production line． Aimed at background on control System reconstruction in some enterprise，it is discussed to the related technology problems based on Melsec Nefl0 o0n． networkforworkshop control system inthis paper． Themain problem is such a8 control scheme co~ on between controlnetwork andloeal al'ea，network for enterprise management，system operation mode and so on． References | Related Articles | Metrics

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Theory and application of "IP Over SDH" to access networks LIU Yi-fan 2005, 24(4): 142-144.  Abstract ( )   PDF (166KB) ( )   In recent years, knowledge management has become an increasingly important topic in the fields of both information technologies and business management. Many organizations have formally set up knowledge management as a pressing task in their current business objectives. This paper intends to discuss some important concepts in the domain of knowledge management, such as Explicit and Tacit Knowledge, Community of Practice and Ontology, etc. It also summarizes some applications of modern informatio References | Related Articles | Metrics

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Knowledge management and the development of information technology LU0 Chuan 2005, 24(4): 145-148.  Abstract ( )   PDF (300KB) ( )   In recent years, knowledge management has become an increasingly important topic in the fields of both information technologies and business management. Many organizations have formally set up knowledge management as a pressing task in their current business objectives. This paper intends to discuss some important concepts in the domain of knowledge management, such as Explicit and Tacit Knowledge, Community of Practice and Ontology, etc. It also summarizes some applications of modern informatio References | Related Articles | Metrics

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The reliability and optimization design of cycloid pinwheel planetary gear transmission system YI Li 2005, 24(4): 149-151.  Abstract ( )   PDF (136KB) ( )   This paper discusses the method of applying reliability design to optimization design for cycloid pinwheel planetary gear transmission system ,and an objective function of reliability and optimization design for obtaining a least gearbox volume was set up with analysis and computation due to an example References | Related Articles | Metrics

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Screening of microbial flocculant-producing bacteria and optimal incubation conditions research YANG Yan-mei 2005, 24(4): 152-156.  Abstract ( )   PDF (289KB) ( )   Among the 194 bacterial strains isolated from three representative sludge samples, 14 bacteria, which could produce efficient MBF, were obtained after screening and rescreening. The MBF produced by these 14 strains had shown positive effects on treatment of pharmaceutic sewage, domestic sewage, blue ink and ink sewage (0.2%). However, most of the strains lost their abilities in producing effective MBF except the I-41 strains after over 10 times of regeneration in about half a year. I-41 is a bac References | Related Articles | Metrics

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Application of AHP in the postgraduate reexamination quality guarantee system BAI Rong, 2005, 24(4): 157-159.  Abstract ( )   PDF (157KB) ( )   Basing on the problems presently existing in the postgraduate reexamnation ,this article introduces the comperativly mature mathmatic toul--The Analytic Hierarchy Process(The AHP)into the establishment of the postgraduate reexamnation quality guarantee system to quantitate the weights of score judgement index.The AHP provides scientific basis for the perfecting of the postgraduate reexamnation quality guarantee system to ensure the postgraduate reexamnation quality References | Related Articles | Metrics

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Some parametric non-compact KKM theorems with applications to economic equilibrium problem in topological spaces without linear structure WANG Da-cheng， REN yuan 2005, 24(4): 160-164.  Abstract ( )   PDF (181KB) ( )   We establish some parametric non-compact KKM theorems for set-valued mappings in generalized interval spaces, more general topological spaces without linear structure. As applications, we utilize the results to study the minimax problem and the equilibrium problem for generalized economy References | Related Articles | Metrics

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A remark on the proof of sampling distribution Theorem HU Bi-jin 2005, 24(4): 165-166.  Abstract ( )   PDF (60KB) ( )   A constructed proof of sampling distribution theorem is designed as a remark of the proof of related theorem in References | Related Articles | Metrics

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Fixdd point theorems in MC-spaces WANG Tong 2005, 24(4): 167-170.  Abstract ( )   PDF (130KB) ( )   Some fixed point theorems with weaker coercive conditions in MC—spaces fire proved ．These theorems include 8oine known fix ed point theorems． References | Related Articles | Metrics