Effects of aging and environmental conditions on seismic response of continuous beam bridges with seismic isolation

doi:10.16058/j.issn.1005-0930.2016.04.018

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Effects of aging and environmental conditions on seismic response of continuous beam bridges with seismic isolation
	Shi, Yan 1,2; Wang, Dongsheng 3; Chen, Baokui 3; Sun, Zhiguo 3
刊名	Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering
	2016-08-01
卷号	24 期号:4 页码:827-839
关键词	Bearings (structural) Concrete bridges Damping Mechanical properties Nonmetallic bearings Piers Rubber Seismic response Bridge engineering Displacement demand Environmental conditions Incremental dynamic analysis Isolated bridges Rubber bearing
ISSN号	10050930
DOI	10.16058/j.issn.1005-0930.2016.04.018
英文摘要	To count for the effects of aging and environmental conditions on mechanical properties of the bridge bearing, the property modification factors, system property adjustment factors and bounding analysis are proposed by some scholars and guide specifications. Combined with characteristics of the rubber bearing in China, the modification procedure to consider the effect of aging and environmental conditions on mechanical properties of the bearing is suggested. Taking 12 continuous beam bridges with different layout features as examples, three designing schemes for isolated bridges, including bridges isolated with lead rubber bearings (LRBs) high damping rubber bearings (HDRBs), and super high damping rubber bearings (SHDRBs) on all piers and abutments, are proposed. 3-D nonlinear dynamic models of the isolated bridges were developed based on the computational platform OpenSees. The seismic response of isolated bridges under different PGAs of ground motions is analyzed using the technology of incremental dynamic analysis (IDA). The displacement response of varied height piers and its discrete state in different bridges are investigated. The nonlinear time history analysis method is conducted using actual ground motions. The analysis results indicated that the seismic response of isolated bridges is susceptible to influences of aging and environmental conditions, especially for lower piers when the isolated bridges are under the ground motion of PGA from 0.2g to 0.4g; If the effect of aging and environmental conditions are not considered, the displacement demand of lower piers was underestimated by about 10%, 50%, 100% and over, when the LRBs, HDRBs, SHDRBs are adopted in the isolated bridges. © 2016, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
语种	中文
出版者	Editorial Board of Journal of Basic Science and
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113408]
专题	土木工程学院
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.The Key Laboratory for Health Monitoring and Control of Large Structures, Shijiazhuang; 050043, China; 3.Institute of Road and Bridge Engineering, Dalian Maritime University, Dalian; 116026, China
推荐引用方式 GB/T 7714	Shi, Yan,Wang, Dongsheng,Chen, Baokui,et al. Effects of aging and environmental conditions on seismic response of continuous beam bridges with seismic isolation[J]. Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering,2016,24(4):827-839.
APA	Shi, Yan,Wang, Dongsheng,Chen, Baokui,&Sun, Zhiguo.(2016).Effects of aging and environmental conditions on seismic response of continuous beam bridges with seismic isolation.Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering,24(4),827-839.
MLA	Shi, Yan,et al."Effects of aging and environmental conditions on seismic response of continuous beam bridges with seismic isolation".Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering 24.4(2016):827-839.