中承式钢管混凝土拱桥弹塑性地震时程分析

doi:10.13229/j.cnki.jdxbgxb201406016

吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (6): 1633-1638.doi: 10.13229/j.cnki.jdxbgxb201406016

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Elastic-plastic time-history analysis of half-through CFST arch bridge

YUN Di¹, LIU He², ZHANG Su-mei³

1.School of Civil Engineering, Jilin Jianzhu University, Changchun 130118, China;
2.Jilin Vocational Technical College of Agricultural Engineering, Siping 136000, China;
3.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

Received:2014-03-23 Online:2014-11-01 Published:2014-11-01

Abstract

Abstract: Elastic-plastic time-history analysis on a large span half-through Concrete-Filled Steel Tubular (CFST) arch bridge was conducted using ANSYS. Taking the acceleration record of El-Centro earthquake as the originally inputted wave, a series wave of different peak accelerations was produced. Then, the relationship between peak acceleration and following responses, such as the maximal displacement, strain energy of elements and ductility factor, were obtained. Finally, the dynamic stability ultimate bearing capacity and the aseismic behavior of the CFST arch bridge were determined. The analysis results have some theoretical significance to aseismic design of CFST bridges. The analysis shows that dynamic bucking of the structure is resulted from the development of both displacement and plasticity of the arch rib. The maximum displacement indubitably occurs near the arch crown and plasticity development always begins from the spring. It is concluded that the application with various responses is more necessary and reasonable in the research of aseismic behavior and dynamic stability of large span CFST arch bridges.

Key words: civil architectural structure, CFST, arch bridge, elastic-plastic time-history analysis, dynamic stability

CLC Number:

TU378

YUN Di, LIU He, ZHANG Su-mei. Elastic-plastic time-history analysis of half-through CFST arch bridge[J].吉林大学学报(工学版), 2014, 44(6): 1633-1638.

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