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15 February 2006, Volume 25 Issue 1 Previous Issue    Next Issue

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Influence of webs inclination on mechanical behaviors of box girder with corrugated steel webs HU Xu-hui， GU An-bang， XU Jun-lan 2006, 25(1): 1-3.  Abstract ( )   PDF (166KB) ( )   The box girder with corrugated steel webs is a new type of composite steel- concrete structure. Combine to it' s structure feature, analysis the mechanical behaviors of the different inclination of webs according to the finite element program. Compared with the finite element model' s deflection、f lexural stress and shear stress in different inclination of webs, it can make some conclusions that can provide theoretical foundation for bridge design and construction in future. References | Related Articles | Metrics

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The analysis of initial stress about stability and bearing capacity of Zhongshan Bridge YU Hong-gang， ZHOU Shui-xing， CHEN Qiang， XIAO Jun-liang 2006, 25(1): 4-7.  Abstract ( )   PDF (217KB) ( )   In terms of constitutive relation of existed initial stress concreted??filled steel tubular, author analyses the influence of initial stress in concrete-filled steel tubular arch bridges. The results show initial stress reduces stability and bearing capacity of concrete-filled steel tubular arch bridge; the influence of initial is not equal to different load conditions. These conclusions offer reference for thorough study of the initial stress in large span concrete??filled steel tubular arch bridges in future. References | Related Articles | Metrics

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Discussion for design and principles conformation measures of durability of concrete bridges WU Hai-jun，PENG Zuo-jun， LU Ping 2006, 25(1): 8-10.  Abstract ( )   PDF (162KB) ( )   It has been verified that key factor influencing structural durability is the defect in structural conformation and system except for the material durability. But the problem is seldom mentioned in the durability study for concrete structures. In this paper, suitable approaches and measures for the robustness, repairability, examinability and waterproofing performance of bridges are discussed to ensure the durability of con?? crete bridges. References | Related Articles | Metrics

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Analysis of abutment sidewall failure mechanism for solid arch bridge on curve LIU Wen-fang， XIAO Sheng-xie，WANG Zhao-hui 2006, 25(1): 11-13.  Abstract ( )   PDF (154KB) ( )   According to the condition of a bridge, a finite element was established to explore the potential failure mechanism of abutment sidewall cracking and sliping. Soil pressure was combined with live load and potential centrifugal force that might be generated due to small radius curve at the beg inning of the bridge, to simulate the most critical load condition. The results indicated ex cessive tension stress due to bending might had caused initial cracking and sliping in service. References | Related Articles | Metrics

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The disease analyze and reinforcement enhance of a truss stone arch bridge ZHANG Min，CHEN Shi-min，HU Mian-yi 2006, 25(1): 14-18.  Abstract ( )   PDF (262KB) ( )   The reinforced concrete and pre-stressed concrete truss arch bridges were 1argely built in China，otherwise truss stone arch bridge was rarely constructed．The inherent causes have been discussed for Tianchi Bridge which is atruss stone bridge．The method of adding to reinforced concrete arch with 3-fibs to reinforce and strength the orginal arch bridge was put forward according to approximate formula about one order self-vibration frequency．To ensure the excellent link with the two arch interfaces。the method with firstly remove pavement then recon struct it was adopted．The capacity standard was impmved from truck-10 to truck-20．The static and dynamic calculation for before and after reinforce have been performed by Nastxan．The results show the self-vibration frequency was effectively improved and the capacity was achieved．At last．the construction key was given． References | Related Articles | Metrics

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Simply discussing the drill fiat roof construction technique character of Sutong bridge’s north main pier ZHANG Gang，LI Kang，WU Jin-liang，SHEN Gang 2006, 25(1): 19-23.  Abstract ( )   PDF (385KB) ( )   In allusion to SuTong dridge’s condition of deep water and rapid flow，This paper summarizes a character giving up traditional steel pipe stake supporting flat rod，using steel canister as supporting component directly and using cantilever orientation guide frame to construct plat roof．This character has paid important role to ensure bridge quality and shorten time limit for the project． References | Related Articles | Metrics

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Monitoring during the exit NATM constretion of dongmenguan tunnel XU Lin-sheng 2006, 25(1): 24-26.  Abstract ( )   PDF (157KB) ( )   The site monitoring was made during the exit construction of Dongmengnan highway tunne1.By means of the monitoring and detailed analysis for eaeh construction stage，feedback controlling desin is realized and the NATM construetion is controlled． References | Related Articles | Metrics

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Determination of rock resistant coeficient in road tunnel based on unified strength theory TU Zhong-ren 2006, 25(1): 27-30.  Abstract ( )   PDF (151KB) ( )   Based orithe unified strength theory，the formula for calculating rock resistant coefficient is given in the paper,which can be adopted to consider the intermediate principle stress effect and to obtain rock resistant coefficient in other situations or strength thoeries simply by as． sumed the parameter in the formula．So the formula can be applied in kinds of rock conditions． References | Related Articles | Metrics

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Study of polypropylene fiber at controlling concrete crack LV Yu-rong，LIANG Nai-xing 2006, 25(1): 31-34.  Abstract ( )   PDF (306KB) ( )   Since there is cement ooncrete，the crack problem have had been obsessing people．The existence of crack not only affects the appearance the building，but also influences the rigidity ofthe construction number and the capability of the whole structure，pursuantly it affeets the normlal usage of the building．So how to resolve this problem becomes the focus of people's attention gradually．This text has analyzed the concrete crack type and the cause of the crack in brief，and given an experiment on the cement sand syrup，the result has proved that the effection of the polypropylene fiber is remarkable． References | Related Articles | Metrics

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Outline of research in the reason of the rural cement concrete pavement fissure an d the prevent BIAN Jia-min，HAO Xiu-min 2006, 25(1): 35-37.  Abstract ( )   PDF (229KB) ( )   This paper comprehensively introduce the outline of research in the reason of the rural cement concrete pavement fissure and introduee something about the prevent in rural cement concrete pavement． References | Related Articles | Metrics

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Causation of cement concrete pavement damage and countermeasure against it WANG De-hong 2006, 25(1): 38-39.  Abstract ( )   PDF (181KB) ( )   Based upon detailed analysis of the causadon of cerment concrete pavement damage．this paper focuses on the countermeasure against it．To solve the problem，the author proposes 3 ways，which are tacking a layer of asphalts concrete，grouting neat cement or cement mortar under the pavement slab，rehabilitation of the broken pavement slabs． References | Related Articles | Metrics

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The study about technique standard of the village highway in developing and protecting YE Qiao-ling，ZHANG Ming-qing 2006, 25(1): 40-43.  Abstract ( )   PDF (237KB) ( )   This text primarily introduced the problem and characteristics of the current village highway，for make the funds of build road to get the reasonable and valid exploitation．to distribute to flick its function，and sive the favor to the farmer，we must choose the seasonable technique standard in the work of developments and protection． References |