柱式柔性墩隔震梁桥结构地震易损性分析

Abstract
Figure/Table
References (16)
Related Citation (9)

Download: PDF (2067 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Lower member of smaller stiffness , such as flexible column pier, has become the most widespread structure in small or medium-span bridge. For this type of bridge, using the LRB bilinear restoring force characteristics by adjusting the overall stiffness of the bridge substructure to change the seismic force distribution between different piers can improve the overall seismic capacity. Five states of bridge injury are defined, quantitative indicators based on curvature ductility to determine the level of these five kinds of damage are summarized, and with the bridge pier top displacement associated. Typical bridge is selected to establish finite element model for dynamic elastic-plastic analysis, pier top displacement probability demand and seismic vulnerability of the bridge before and after isolation were compared, the analysis shows that, for the adoption of the flexible column pier structure, after reasonable isolation transformation, as long as the system to ensure the normal operation of isolation bearings, bridge seismic level of overall improvement in the earthquake effect is evident.

Key words： Isolated bridge flexible column pier fragility analysis damage index LRB

Received: 22 August 2014 Published: 25 August 2015

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	ZHANG Yun1
	2
	TAN Ping1
	ZHENG Jian-xun1
	ZHOU Fu-lin1

Cite this article:

ZHANG Yun1,2,TAN Ping1, et al. Seismic fragility analysis for isolated bridges with flexible column pier[J]. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(16): 48-54.

URL:

http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2015/V34/I16/48

[1] 李圣,钟铁毅,张常勇. 基于概率地震需求分析的铅芯橡胶支座抗震性能研究[J]. 振动与冲击, 2013,32(7): 48-53.
LI Sheng，ZHONG Tie-yi，ZHANG Chang-yong. Aseismic performance of LRB based on probabilistic seismic demand analysis[J]. Journal of Vibration and Shock, 2013,32(7):48-53.
[2] Bessason B, Haflidason E. Recorded and numerical strong motion response of a base-isolation bridge[J]. Earthquake Spectra, 2004, 2: 309-332.
[3] 李黎,胡紫东,聂肃非,等. 基于近断层地震LRB桥梁支座屈服力优化 [J]. 振动与冲击, 2011, 30(6): 134-138.
LI Li, HU Zi-dong, NIE Su-fei,et al. Optimum yield strength of LRB for isolated bridges under near-fault earthquake[J]. Journal of Vibration and Shock, 2011, 30(6):134-138.
[4] 沈朝勇,周福霖,温留汉•黑沙. 不同桥梁隔震橡胶支座力学性能对比试验研[J]. 土木工程学报, 2012, 45(S1): 233-237.
SHEN Chao-yong,ZHOU Fu-lin,WENLIUHAN•Hei-sha. Test study on mechanical property of different type of isolators for bridge [J]. China Civil Engineering Journal, 2012, 45(S1):233-237.
[5] 龚一琼,胡勃,袁万城,等. 连续梁桥的减隔震设计[J]. 同济大学学报,2001,29(1):94-98.
GONG Yi-qiong, HU Bo, YUAN Wan-cheng,et al. Seismic isolation design of continuous girder bridges[J]. Journal of TongJi University,2001,29(1):94-98.
[6] 周福霖.工程结构减震控制[M].北京:地震出版社,1997.
[7] 杜修力,韩强,刘晶波. 多维地震作用下隔震桥梁地震反应(II)-理论分析与试验结果比较[J]. 振动与冲击, 2008, 27(9): 66-71.
DU Xiu-li, HAN Qiang, LIU Jing-bo. Seismic response of isolated bridges with LRB under muldi-directional earthquake part(II)-theoretical and comparative analysis [J]. Journal of Vibration and Shock, 2008, 27(9): 66-71.
[8] 范立础,王志强. 我国桥梁隔震技术的应用[J]. 振动工程学报, 1999,12(2):173-181.
FAN Li-chu, WANG Zhi-qiang. Application of seismic isolation technology for bridges in China [J]. Journal of Vibration Engineering, 1999, 12(2):173-181.
[9] 周锡元,李中锡. 规则型隔震桥梁结构的简化分析方法[J]. 土木工程学报, 2001, 34(3):53-58.
ZHOU Xi-yuan, LI Zhong-xi. Simplified formulas for seismic isolation regular bridge[J]. China Civil Engineering Journal, 2001, 34(3):53-58.
[10] Cornell C A, Jalayer F, Hamburger R O, et al． The probabilistic basis for the 2000 SAC/FEMA steel moment frame guidelines[J]． Journal of Structural Engineering, ASCE, 2002, 128( 4):526-533．
[11] 吕大刚,于晓辉. 基于地震易损性解析函数的概率地震风险理论研究[J].建筑结构学报,2013,34(10): 41-48.
LüDa-gang, YU Xiao-hui. Theoretical study of probabilistic seismic risk assessment based on analytical functions of seismic fragility[J]. Journal of Building Structures，2013,34(10):41-48.
[12] Hwang H，刘晶波.地震作用下钢筋混凝土桥梁结构易损性分析[J]. 土木工程学报,2004,37(6):47-51.
Hwang H, LIU Jing-bo. Seismic fragility analysis of reinforced concrete bridges [J]. China Civil Engineering Journal, 2004, 37(6):47-51.
[13] Papadrakakis M, Tsompanakis T, Lagaros N D, et al. Reliability based optimization of steel frames under seismic loading conditions using evolutionary computation[J]. Journal of Theoretical and Applied Mechanics, 2004, 42 (3):585- 608.
[14] 日本地震工学会基于性能的抗震设计研究委员会,编.王雪婷,译.基于性能的抗震设计-现状与课题[M].北京:中国建筑工业出版社,2012.
[15] Hueste M B D, Bai J W. Seismic retrofit of a reinforced concrete flat-slab structure: part II seismic fragility analysis[J].Engineering Structures, 2007, 29(6):1178- 1188.
[16] 日本建筑学会, 著. 刘文光, 译. 隔震结构设计[M]. 北京: 地震出版社,2006.