Shaking table tests of a single-span freestanding rocking bridge for seismic resilience and isolation

被引:15
作者
Du, Xiu-Li [1 ]
Zhou, Yu-Long [1 ]
Han, Qiang [1 ]
Jia, Zhen-Lei [1 ]
机构
[1] Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
关键词
double-column bent; freestanding rocking bridge; seismic isolation; seismic response; shaking table test; PIERS; DAMAGE;
D O I
10.1177/1369433219859410
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Rocking philosophy has advantages to maintain a preferable post-earthquake serviceability as an alternative of seismic resistant systems. This article presents an experimental study on the seismic behavior of a rocking bridge with freestanding columns capped with a freely supported deck. A 1/10 scaled, single-span double-column freestanding bridge was constructed and tested on a shaking table. The experimental results showed that the bridge model could undergo large rocking with enough stability under earthquakes and presented excellent post-earthquake resilience after earthquakes with limited damage and negligible residual displacement. The rocking bridge model also exhibited expected isolation efficiency, which increases as the level of excitations becomes more severe. In addition, an analytical model based on multi-block rocking mechanisms was used to calculate the displacement response. Compared with the experimental results, this analytical model well predicts the peak displacement of the rocking bridge model.
引用
收藏
页码:3222 / 3233
页数:12
相关论文
共 23 条
[1]  
[Anonymous], 1992, Matlab Users Guide
[2]  
Cheng, 1997, NCEER970014 STAT U D
[3]   Shaking table tests of a self-centering designed bridge substructure [J].
Cheng, Chin-Tung .
ENGINEERING STRUCTURES, 2008, 30 (12) :3426-3433
[4]  
Cormack L.G., 1987, IPENZ ANN C CHRISTCH, P1
[5]   Dimensionless fragility curves for rocking response to near-fault excitations [J].
Dimitrakopoulos, Elias G. ;
Paraskeva, Themelina S. .
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 2015, 44 (12) :2015-2033
[6]  
Dowdell DJ, 2000, BEHAVIOUR OF STEEL STRUCTURES IN SEISMIC AREAS, P319
[7]   Hysteretic behavior investigation of self-centering double-column rocking piers for seismic resilience [J].
Han, Qiang ;
Jia, Zhenlei ;
Xu, Kun ;
Zhou, Yulong ;
Du, Xiuli .
ENGINEERING STRUCTURES, 2019, 188 :218-232
[8]   Seismic damage of highway bridges during the 2008 Wenchuan earthquake [J].
Han Qiang ;
Du Xiuli ;
Liu Jingbo ;
Li Zhongxian ;
Li Liyun ;
Zhao Jianfeng .
EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION, 2009, 8 (02) :263-273
[9]  
Ingham T.J., 1995, P NAT SEISM C BRIDG
[10]   Assessment on required separation length between adjacent bridge segments to avoid pounding [J].
Jia, Hong-Yu ;
Lan, Xian-Lin ;
Zheng, Shi-Xiong ;
Li, Lan-Ping ;
Liu, Cheng-Qing .
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING, 2019, 120 :398-407