Analysis Model and Seismic Behavior of Repaired RC Bridge Piers After Earthquakes by Using CFRP

被引：0
|
作者：
Sun Z. [1 ]
Guan L. [1 ]
Zhao T. [2 ]
Si B. [3 ]
Niu J. [3 ]
机构：
[1] School of Civil Engineering, Institute of Disaster Prevention, Beijing
[2] School of Civil Engineering, Southeast University, Nanjing
[3] Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian
来源：
| 1600年 / Editorial Board of Journal of Basic Science and卷 / 28期
关键词：
CFRP; Numerical simulation; RC bridge piers; Repair after an earthquake; Seismic design of bridges;
D O I：
10.16058/j.issn.1005-0930.2020.04.011
中图分类号：
学科分类号：
摘要：
To study the seismic behavior of repaired RC (Reinforced Concrete, RC) bridge piers by using CFRP (Carbon Fiber Reinforced Polymer, CFRP) sheets after an earthquake, a numerical analysis model for the repaired RC bridge piers considering the confining effect provided by the CFRP and initial damage to the piers was proposed.The accuracy of the model was verified by comparing with the test results for two circular bridge piers repaired using CFRP sheets.Then, the analysis models for an undamaged RC pier, a repaired RC pier and a repaired RC pier with longitudinal unbonded prestressing tendons were built.The incremental dynamic analysis (IDA) was conducted for all the piers under both the near-fault and far-fault ground motions.The seismic behavior of all the three piers was compared with each other.The results show that the proposed numerical model could simulate the seismic behavior of the repaired RC piers well.The maximum drift ratio and residual drift ratio of the repaired RC pier are larger than that of the undamaged RC pier.The near-fault ground motion would induce a large residual displacement for the repaired RC bridge pier.The repaired RC pier with unbonded prestressing tendons shows small residual displacement after a major earthquake. © 2020, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
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页码：878 / 889
页数：11
相关论文
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