Analysis on the Seismic Response of RC Bridge Piers Under Long-duration Earthquake Ground Motions

被引：0
|
作者：
Sun Z. [1 ]
Li X. [1 ]
Li H. [2 ]
Wang D. [3 ]
机构：
[1] Key Laboratory of Building Collapse Mechanism and Disaster Prevention, Institute of Disaster Prevention, China Earthquake Administration, Beijing
[2] State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian
[3] School of Civil and Transportation Engineering, Hebei University of Technology, Tianjin
来源：
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | 2023年 / 31卷 / 01期
关键词：
Cloud chart method; Cumulative damage; Long duration ground motions; Numerical analysis; Reinforced concrete bridge pier; Seismic design of bridges; Vulnerability;
D O I：
10.16058/j.issn.1005-0930.2023.01.012
中图分类号：
学科分类号：
摘要：
Reinforced concrete (RC) bridge piers may be affected by long duration earthquake ground motions, and the piers may be seriously damaged.Seismic analysis model for the piers considering the cumulative damages to the concrete and reinforcement was built by using the OpenSees platform.A total of 100 groups of long-duration and matched short-duration earthquake ground motions were selected according to the principle of spectrum matching method. The influence of the ground motion duration on the pier response was studied. The fragility analysis was conducted for the piers under different ground motions by cloud chart method. The results show that, for the piers with aspect ratio of 6, the maximum drift ratio, the residual drift ratio and the curvature ductility factor of the piers under long duration ground motions are 1.2-1.3 times, 1.6-1.7 times and 1.5-1.6 times of that under short duration ground motions.For the piers with aspect ratio of 4, the maximum drift ratio, the residual drift ratio and the curvature ductility factor of the piers under long duration ground motions are 1.6-1.7 times, 2.3-2.9 times and 2.1-2.6 times of that under short duration motions.Under the ground motions with the same PGA, the exceedance probability of piers with different damage states under long-duration ground motions are greater than that under short-duration ground motions.Long duration ground motions would lead to more significant damage to bridge piers. The influence of ground motion duration should be considered in the seismic behavior evaluation of bridges. © 2023, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
引用
收藏
页码：154 / 169
页数：15
相关论文
共 22 条
  • [1] Ou Y C, Song J W, Wang P H, Et al., Ground motion duration effects on hysteretic behavior of reinforced concrete bridge columns, Journal of Structural Engineering, ASCE, 140, 3, (2014)
  • [2] Hancock J, Bommer J J., A state of knowledge review of the influence of strong-motion duration on structural damage[J], Earthquake Spectra, 22, 3, pp. 827-845, (2006)
  • [3] Chandramohan R, Baker J W, Deierlein G G., Quantifying the influence of ground motion duration onstructural collapse capacity using spectrally equivalent records[J], Earthquake Spectra, 32, 2, pp. 927-950, (2016)
  • [4] Han J P, Sun X Y, Zhou Y., Duration effect of spectrally matched ground motion records on collapseresistance capacity evaluation of RC frame structures[J], The Structural Design of Tall and Special Building, 26, 18, pp. 1-12, (2017)
  • [5] Hou H T, Qu B., Duration effect of spectrally matched ground motions on seismic demands of elasticperfectly plastic SDOFS[J], Engineering Structures, 90, 1, pp. 48-60, (2015)
  • [6] Han Jianping, Cheng Shiyan, Yu Xiaohui, Et al., Effect of ground motion duration on fragility and seismic performance of RC frame structures, Journal of Building Structures, 42, 11, pp. 116-127, (2021)
  • [7] El-Bahy A, Kunnath S K, Stone W C, Et al., Cumulative seismic damage of circular bridge columns:benchmark and low-cycle fatigue tests[J], ACI Structural Journal, 96, 4, pp. 633-641, (1999)
  • [8] Zhu Jichao, Gong Jinxin, Xiong Liangjun, Et al., Experimental study on the seismic behavior of reinforced concrete bridge piers under varied loading cycles, Journal of Southeast University (Natural Science Edition), 49, 4, pp. 652-663, (2019)
  • [9] Sun P Y, Zhai C H, Wen W P., Experimental investigationon the damage accumulation of reinforced concrete columns under mainshock-aftershock sequences[J], Earthquake Engineering and Structural Dynamics, 50, 15, pp. 4142-4160, (2021)
  • [10] Chen Liang, Li Jianzhong, Guan Zhongguo, Et al., Influence of strong-motions duration on seismic inelastic demand for columns of RC bridges, Journal of Vibration and Shock, 27, 11, pp. 154-159, (2008)
123