Dynamic responses of base-isolated concrete liquid storage structure under two types of resonances

doi:10.21595/jve.2019.20645

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Dynamic responses of base-isolated concrete liquid storage structure under two types of resonances
	Jing, Wei 1,2; Wang, Jingxuan 1,2
刊名	Journal of Vibroengineering
	2019-09-01
卷号	21 期号:6 页码:1574-1586
关键词	Concretes Dynamic response Fluid structure interaction Harmonic functions Resonance Shear flow Velocity Vibration analysis Water waves Dynamic coordinate systems External excitation frequency Initial and boundary conditions Isolation Liquid storage Nonlinear characteristics Resonance amplification Structure displacement
ISSN号	13928716
DOI	10.21595/jve.2019.20645
英文摘要	One important characteristic of base-isolated liquid storage structure (LSS) is that the vibration periods of structure and liquid are different, namely, there are two kinds of periods in the system. As a result, structure or liquid resonance may occurs under external excitation. In order to reflect the nonlinear characteristics of liquid sloshing, subsonic potential-based element is used to simulate the liquid. The governing equations of liquid field and fluid-structure interaction (FSI) equations are established; the initial and boundary conditions of liquid sloshing in dynamic coordinate system are obtained. Harmonic functions used to conduct time history analysis are generated by the first order vibration frequencies of structure and liquid respectively. The dynamic responses of base-isolated rectangular liquid storage structure (RLSS) under two types of resonance are studied comparatively. Results show that when the external excitation frequency is equal to the first order vibration frequency of isolated structure or liquid sloshing, wall tensile stress, structure displacement, base shear force and liquid sloshing wave height will appear resonance amplification phenomenon. The dynamic responses of structure itself caused by structure resonance are greater than that of liquid resonance; while the liquid sloshing wave height caused by liquid resonance is greater than that of structure resonance. Under structure resonance, the wall is prone to be cracked; and under liquid resonance, the liquid velocity field will become unusually violent, and liquid overflow will be caused easily. © 2019 Wei Jing, et al.
WOS研究方向	Engineering
语种	英语
出版者	JVE International
WOS记录号	WOS:000488761000006
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113914]
专题	土木工程学院
作者单位	1.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Jing, Wei,Wang, Jingxuan. Dynamic responses of base-isolated concrete liquid storage structure under two types of resonances[J]. Journal of Vibroengineering,2019,21(6):1574-1586.
APA	Jing, Wei,&Wang, Jingxuan.(2019).Dynamic responses of base-isolated concrete liquid storage structure under two types of resonances.Journal of Vibroengineering,21(6),1574-1586.
MLA	Jing, Wei,et al."Dynamic responses of base-isolated concrete liquid storage structure under two types of resonances".Journal of Vibroengineering 21.6(2019):1574-1586.