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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.