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《Journal of Chongqing Jiaotong University(Natural Science)》 2011-06
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Seismic Performance of Circular Reinforced Concrete Bridge Columns(Ⅱ):Evaluation of Experimental Results

LI Gui-qian1,2,ZHENG Gang2,WANG Jun3(1.Communications Planning,Survey & Designing Institute of Guangxi Zhuang Autonomous Region,Nanning 530011, Guangxi,China;2.State Key Laboratory of Bridge Structural Dynamics,Chongqing Communications Research & Design Institute, Chongqing 400067,China;3.School of Civil Engineering & Architecture,Chongqing Jiaotong University,Chongqing 400074,China)  
According to the failure phenomenon and test data in the orthogonal quasi-static test,the characteristics of deformation and flexural strength of circular reinforced concrete bridge columns are studied.And the displacement ductility,effective stiffness,stiffness degradation and capacity of accumulative energy dissipation to ultimate displacement state of bridge columns subjected to low-cyclic loading have been evaluated,so as to investigate the influence of factors such as shear-span ratio,axial-load ratio,and longitudinal reinforcement ratio and spiral reinforcement ratio on ductility performance of bridge columns.Finally,some useful conclusions are found out for the ductile anti-seismic design of highway bridges.
【Fund】: 交通运输部西部交通建设科技项目(2007 318 822 33);; 重庆市杰出青年科技基金资助项目(CSTC 2008BA6039)
【CateGory Index】: U443.22
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