[1]赵建锋,孙伟帅,李刚.不同轴压比钢筋混凝土圆柱桥墩地震易损性分析[J].世界地震工程,2018,34(04):031-37.
 ZHAO Jianfeng,SUN Weishuai,LI Gang.Seismic vulnerability analysis of cylindrical RC bridge piers with different axial compression ratios[J].,2018,34(04):031-37.
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不同轴压比钢筋混凝土圆柱桥墩地震易损性分析
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《世界地震工程》[ISSN:/CN:]

卷:
34
期数:
2018年04期
页码:
031-37
栏目:
出版日期:
2019-01-30

文章信息/Info

Title:
Seismic vulnerability analysis of cylindrical RC bridge piers with different axial compression ratios
作者:
赵建锋 孙伟帅 李刚
青岛理工大学 土木工程学院, 山东 青岛 266033
Author(s):
ZHAO Jianfeng SUN Weishuai LI Gang
School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China
关键词:
循环往复Pushover增量动力分析(IDA)地震易损性轴压比超越概率
Keywords:
cyclic Pushover analysis methodincremental dynamic analysis (IDA)seismic vulnerabilityaxial compression ratioexceedance probability
分类号:
TU352.1+1
摘要:
以墩顶漂移率为指标运用ABAQUS有限元软件对钢筋混凝土桥墩进行地震易损性分析。对钢筋混凝土桥墩模型进行精细网格划分,运用循环往复Pushover方法模拟钢筋混凝土桥墩破坏界限值,以此界限值为标准对轴压比为0.20、0.22、0.24、0.26和0.30钢筋混凝土桥墩进行增量动力分析(IDA)。研究结果表明:结构的破坏超越概率,随着轴压比的增大而增大;考虑钢筋混凝土桥墩延性抗震性能,设计轴压比不宜超过0.30;轴压比为0.24~0.26时,钢筋混凝土桥墩破坏概率增加不大,宜为合理的轴压比。
Abstract:
Finite element analysis software ABAQUS was used to analyze seismic vulnerability of reinforced concrete (RC) bridge piers based on drift ratio of the top of piers. The model of the RC bridge piers was divided into fine meshes, and the cyclic Pushover method was used to simulate the failure limit values of the piers. With these limit values as the standard, incremental dynamic analysis (IDA) was carried out for the RC bridge piers with axial compression ratios of 0.20, 0.22, 0.24, 0.26 and 0.30. The results are as follows. The exceedance probability of the structure failure increases with the increase of the axial compression ratios. Considering ductility seismic performances of the RC bridge piers, the design axial compression ratio of structure should not exceed 0.30. When the axial compression ratios range from 0.24-0.26, the failure probability of the RC bridge piers increases slightly, which proved the range is reasonable.

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备注/Memo

备注/Memo:
收稿日期:2017-6-28;改回日期:2018-5-15。
基金项目:国家自然科学基金项目(51778314,51508295)
作者简介:赵建锋(1976-),男,博士,副教授,主要从事结构抗震方面研究.E-mail:zhaojf@bjut.edu.cn
更新日期/Last Update: 1900-01-01