Dynamic response analysis of isolated curved beam bridge under multi-dimensional non-stationary random excitation considering the torsion component

doi:10.1088/1742-6596/2158/1/012014

IR > 土木工程学院

	Dynamic response analysis of isolated curved beam bridge under multi-dimensional non-stationary random excitation considering the torsion component
	Li, X.M.1,2 ; Wang, J.C.1,2; Pu, K.1,2; Mu, B.H.3
	2022-01-18
会议名称	14th International Conference on Intelligent Computation Technology and Automation, ICICTA 2021
会议录名称	Journal of Physics: Conference Series
卷号	2158
期号	1
会议日期	September 25, 2021 - September 26, 2021
会议地点	Virtual, Online
会议录编者/会议主办者	Changsha University of Science and Technology ; Hunan City University ; Tongji University
出版者	IOP Publishing Ltd
摘要	The coupling effect of bending and torsion caused by plane irregularity of the isolated curved beam bridge makes its seismic response more complex than that of the isolated straight beam bridge. In order to study the influence of multi-dimensional non-stationary random excitation considering torsion component on seismic response of tqiongw@mls.sinanet.comhe isolated curved beam bridge. The classical Bouc-Wen model was used to simulate the hysteretic characteristics of the curved beam bridge, and the nonlinear dynamic equation considering the eccentricity of superstructure was established. The pseudo excitation was transformed into harmonic external load by Euler formula, and combining with the precise integration method, the precise integration forms of the special solution under different modulation functions were derived. By using these integral forms to solve the response at each time, the time-varying variance of displacement of the isolated curved beam bridge under multi-dimensional non-stationary random excitation was obtained, and the law of time-varying variance of displacement, including the upper and lower structures of the isolated curved beam bridge, was analyzed with different deck width, curvature radius and yield ratio of bearing. The results show that the multi-dimensional non-stationary random excitation with torsion component has significant influence on the seismic response of the isolated curved beam bridge. Under the rare non-stationary random excitation, the dynamic response of the isolated curved beam bridge presents strong non-stationarity, and the time-lag phenomenon is apparent. For the isolated curved beam bridge with large deck width and small yield ratio of bearing, the influence of non-stationary random excitation on the structure is particularly obvious. The influence of non-stationary random excitation considering torsion component on dynamic response of the isolated curved beam bridge with large deck width, small curvature radius and large yield ratio of bearing is more significant. © 2022 Institute of Physics Publishing. All rights reserved.
关键词	Bridges Curved beams and girders Dynamic response Integration Nonlinear equations Bouc Wen model Curved beam bridge Isolated curved beam bridge Multi dimensional Multi dimensional non stationary random excitation Nonstationary Stationary random excitation The precise integration method Torsion component
DOI	10.1088/1742-6596/2158/1/012014
收录类别	EI
语种	英语
EI入藏号	20220711616237
EI主题词	Torsional stress
EI分类号	401.1 Bridges ; 408.2 Structural Members and Shapes ; 921.2 Calculus
ISSN	1742-6588
引用统计	无
文献类型	会议论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/158075
专题	土木工程学院
作者单位	1.Western Engineering Research Center of Disaster Mitigation in Civil Engineering, Lanzhou University of Technology, Gansu, Lanzhou; 730050, China; 2.Institute of Earthquake Protection and Disaster Mitigation, Lanzhou University of Technology, Gansu, Lanzhou; 730050, China; 3.China Municipal Engineering Northwest Design & Research Institute Co. Ltd, Gansu, Lanzhou; 730050, China
第一作者单位	兰州理工大学
推荐引用方式 GB/T 7714	Li, X.M.,Wang, J.C.,Pu, K.,et al. Dynamic response analysis of isolated curved beam bridge under multi-dimensional non-stationary random excitation considering the torsion component[C]//Changsha University of Science and Technology, Hunan City University, Tongji University:IOP Publishing Ltd,2022.