Study on earthquake rotation mechanism and skew degree influence on three-span simply supported skewed girder bridge

doi:10.11990/jheu.201702015

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Study on earthquake rotation mechanism and skew degree influence on three-span simply supported skewed girder bridge
	Wang, Junwen 1; Zhan, Min 2; Deng, Qin 3; Shi, Yan 4
刊名	Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University
	2018-08-05
卷号	39 期号:8 页码:1357-1362
关键词	Earthquakes Modal analysis Seismic response Structural dynamics Vibration analysis Pounding Rotation mechanism Seismic Simply supported Skewed bridges Time history analysis method
ISSN号	10067043
DOI	10.11990/jheu.201702015
英文摘要	To determine the influencing factors on the deck rotation of a three-span simply supported skewed girder bridge (SSGB) under earthquake excitation, the OpenSees software was used to create a simplified dynamic calculation model of three-span SSGB. By modal analysis and time-history analysis methods, the structural dynamic characteristics and nonlinear seismic responses were calculated The occurrence mechanisms of the deck rotation and the influence of the skew degree on the deck rotation were analyzed from vibration modes and dynamic responses. The results show that the dynamic structural characteristics determine the seismic responses of the side span and the middle span for the three-span SSGB; without pounding effect, the rotational amplitude of the side span is larger than that of the middle span, and the translation amplitude of the side span is smaller than that of the middle span. The longitudinal pounding moment aggravates the deck rotation, and the transverse pounding moment restrains the deck rotation. Therefore, the deck rotation is smaller when considering only the longitudinal pounding effect than when considering both longitudinal and transverse pounding effects. The deck rotation of the middle span is attributed to the pounding moment while that of the side span is attributed to both the dynamic characteristics of the structure and the pounding moment. Moreover, the pounding moment is the main factor when the skew is greater than 0°. © 2018, Editorial Department of Journal of HEU. All right reserved.
语种	中文
出版者	Editorial Board of Journal of Harbin Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114975]
专题	土木工程学院
作者单位	1.School of Civil Engineering, Shijiazhuang Railway University, Shijiazhuang; 050043, China; 2.China Railway Fifth Survey and Design Institute Group Co., Ltd., Beijing; 102600, China; 3.Beijing MTR Operation Administration Corporation, Beijing; 100068, China; 4.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Wang, Junwen,Zhan, Min,Deng, Qin,et al. Study on earthquake rotation mechanism and skew degree influence on three-span simply supported skewed girder bridge[J]. Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University,2018,39(8):1357-1362.
APA	Wang, Junwen,Zhan, Min,Deng, Qin,&Shi, Yan.(2018).Study on earthquake rotation mechanism and skew degree influence on three-span simply supported skewed girder bridge.Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University,39(8),1357-1362.
MLA	Wang, Junwen,et al."Study on earthquake rotation mechanism and skew degree influence on three-span simply supported skewed girder bridge".Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University 39.8(2018):1357-1362.