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[1]孙广俊,吴炳延,李鸿晶.考虑轴压比影响的钢筋混凝土圆形桥墩位移角地震损伤指标研究[J].南京工业大学学报(自然科学版),2020,42(03):302-311.
 SUN Guangjun,WU Bingyan,LI Hongjing.Study on seismic damage index of displacement angle of reinforced concrete circular bridge pier considering axial compression ratio influence[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2020,42(03):302-311.
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考虑轴压比影响的钢筋混凝土圆形桥墩位移角地震损伤指标研究()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
42
期数:
2020年03期
页码:
302-311
栏目:
出版日期:
2020-05-20

文章信息/Info

Title:
Study on seismic damage index of displacement angle of reinforced concrete circular bridge pier considering axial compression ratio influence
文章编号:
1671-7627(2020)03-0302-10
作者:
孙广俊吴炳延李鸿晶
南京工业大学 土木工程学院,江苏 南京 211800
Author(s):
SUN Guangjun WU Bingyan LI Hongjing
College of Civil Engineering, Nanjing Tech University, Nanjing 211800, China
关键词:
钢筋混凝土桥梁 桥墩 地震 损伤指标 桥墩位移角 轴压比
Keywords:
reinforced concrete bridge bridge pier earthquake damage index displacement angle of bridge pier axial compression ratio
分类号:
U442.55
文献标志码:
A
摘要:
桥墩的抗震性能对于整个桥梁而言具有举足轻重的作用,对其损伤状态进行合理评估是桥梁地震损伤评估的一个关键问题。首先,选取桥墩位移角作为桥墩地震损伤的评估指标,通过对来自不同试验数据库的混凝土圆形桥墩抗震试验数据的统计分析和分布拟合,确定不同损伤状态下的桥墩位移角限值。其次,考虑轴压比的影响,对桥墩位移角损伤指标进行修正。最后,选取高烈度地区具有代表性的桥墩进行循环荷载下的抗震性能数值模拟,并采用未用于统计分析的试验结果,对所给出的桥墩位移角损伤指标取值进行验证。结果表明:所提出的混凝土圆形桥墩地震损伤评估指标合理,相比于其他非位移角指标,采用考虑轴压比修正的桥墩位移角作为评估指标可以方便且更合理地评价桥墩在地震中的损伤情况,为评估桥梁整体地震损伤状态提供依据。
Abstract:
The seismic behaviors of bridge piers played a decisive role for the whole bridge seismic performance and reasonable assessment of their damage status was a key problem in the evaluation of seismic damage of bridges. Firstly, displacement angle of bridge pier was selected as the evaluation index of earthquake damage, and then by statistical analysis and distribution fitting of seismic experimental data of concrete circular piers from different data bases, the limit values of bridge pier displacement angles under several different damage states were determined. Then, considering the influence of axial compression ratio, the damage indexes of bridge pier displacement angle were revised. Finally, numerical simulation of seismic performance of representative bridge piers under cyclic loading were carried out and the test results not used for statistical analysis were selected to verify the displacement angle damage indexes of bridge pier. Results showed that the seismic damage evaluation indexes of circular bridge pier based on displacement angle proposed were reasonable in this study. Comparing with other damage indexes, application of bridge pier displacement angle considering the axial compression ratio influence as the evaluation index may easily and more reasonably give rise to the evaluation of bridge pier seismic performance in earthquake, which would provide a basis for whole seismic damage assessment of bridges.

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备注/Memo

备注/Memo:
收稿日期:2019-12-02
基金项目:国家自然科学基金(51878347,51308293); 江苏省建设系统科技项目(2015ZD75)
作者简介:孙广俊(1979—),男,博士,副教授,E-mail:gjsun2004@163.com.
引用格式:孙广俊,吴炳延,李鸿晶.考虑轴压比影响的钢筋混凝土圆形桥墩位移角地震损伤指标研究[J].南京工业大学学报(自然科学版),2020,42(3):302-311.
SUN Guangjun, WU Bingyan, LI Hongjing. Study on seismic damage index of displacement angle of reinforced concrete circular bridge pier considering axial compression ratio influence[J].Journal of Nanjing Tech University(Natural Science Edition),2020,42(3):302-311..
更新日期/Last Update: 2020-05-31