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《Journal of Earthquake Engineering and Engineering Vibration》 2010-01
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Study on nonlinear seismic behavior of urban bridges with single-column pier

QIU Wenliang,JIANG Meng,ZHANG Zhe(School of Civil & Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China)  
Considering the shortcomings of the continuous girder bridge with single column pier usually used in city,two-span T-shaped rigid-frame bridge with single-column pier is put forward in this paper.Using the time-history analysis and considering the material nonlinearity of reinforced concrete of the pier,the nonlinear seismic responses of the two bridge structures subjected to horizontal seismic ground motion are analyzed,and the time histories of moments,shear forces,displacements and rotation angles of plastic hinges are presented.The results show that,compared with the continuous girder bridge,the shear forces of T-shaped rigid-frame bridge are bigger,the moments of T-shaped rigid-frame bridge are smaller,and the angle of plastic hinge of T-shaped rigid-frame bridge is even smalle.So the anti-seismic performance of T-shaped rigid-frame bridge is better than that of continuous girder bridge under the condition that the shear-resistant capacity of pier is remarkable.
【Fund】: 国家自然科学基金项目(50878037)
【CateGory Index】: U442.55
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