Additional viscous dampers for double-column rocking bridge system: Seismic response and overturning analysis

被引：13
|
作者：
Zhou, Yu-Long [1 ]
Han, Qiang [2 ]
Du, Xiu-Li [2 ]
Zhang, Jin-Quan [1 ]
Cheng, Shou-Shan [1 ]
Chen, Jing-Yi [2 ]
机构：
[1] Minist Transport, Res Inst Highway, Beijing, Peoples R China
[2] Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing, Peoples R China
来源：
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2021年 / 141卷
基金：
中国博士后科学基金; 国家重点研发计划; 中国国家自然科学基金;
关键词：
Rocking bridge system; Double-column bent; Viscous damper; Seismic response; Overturning analysis; PIERS; BEHAVIOR;
D O I：
10.1016/j.soildyn.2020.106504
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Rocking systems have proved to be an attractive alternative for seismic resilience under strong earthquakes. In order to investigate the seismic response and overturning of double-column rocking bridge system with viscous dampers (VDs), a multi-block analytical model considering additional VDs is developed in this paper. Compared with the free-rocking system and monolithic system, the seismic response of damped rocking system was analyzed to validate the benefits of VDs for rocking system. The effect of damped system parameters on the seismic response of double-column rocking bridge were also investigated. The analysis illustrates the sensitivity of the overturning to the long distinct pulses of near-field ground motions. Finally, dimensionless overturning spectra for pulse excitations were generated to provide insight into the overturning mechanisms of the damped rocking bridge system and the beneficial effect of viscous dampers on preventing from overturning.
引用
收藏
页数：12
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