Seismic responses analysis of multi-story suspended floors system

doi:10.21595/jve.2020.21478

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Seismic responses analysis of multi-story suspended floors system
	He, Qingguang 1,2; Yin, Ao 1; Fan, Ziheng 1; He, Lei 1
刊名	JOURNAL OF VIBROENGINEERING
	2021
卷号	23 期号:1 页码:167-182
关键词	suspended structure Lagrange equation Newmark-beta method period ratio seismic performance
ISSN号	1392-8716
DOI	10.21595/jve.2020.21478
英文摘要	One of the forefront of structural engineering is to realize the good resistance of building structure to earthquake loads. The performance philosophy of design structure has recently changed from preventing collapse to controlling the damage of structures under earthquake loading, which requires the development of new structural systems with great potential. An innovative multi-story suspended floors system model is proposed and its seismic responses are analytically studied in this paper to investigate the seismic performance of the system under strong earthquake loading. The system comprises a reinforced concrete frame with floors suspended from the columns using hangar rods. The characteristic of this suspended structure is that the lifting points of suspended floors are set on the columns. The equations of motion for this system are derived through the Lagrange equation and the structural responses are calculated in time-domain by the Newmark-beta method. A comparison between seismic responses of the innovative system and conventional frame system shows that the multi-story suspended floors system has excellent seismic performances. By establishing the relationship between the period ratio and seismic response of the system, the optimal period ratio is found to improve the seismic performance of the whole system. Finally, structural parameters such as the hangar rod length, damping ratio, and stiffness provided by the cushioning devices, the mass of suspended floors are optimized, considering seismic responses of rooftop and suspended floors as optimization objectives. It is shown that suitable parameters can be found to improve seismic performance and vibration control of the whole system.
WOS研究方向	Engineering
语种	英语
出版者	JVE INT LTD
WOS记录号	WOS:000619809900012
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/147392]
专题	土木工程学院
作者单位	1.Lanzhou Univ Technol, Key Lab Disaster Prevent & Mitigat Civil Engn Gan, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Minist Educ, Western Engn Res Ctr Disaster Mitigat Civil Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	He, Qingguang,Yin, Ao,Fan, Ziheng,et al. Seismic responses analysis of multi-story suspended floors system[J]. JOURNAL OF VIBROENGINEERING,2021,23(1):167-182.
APA	He, Qingguang,Yin, Ao,Fan, Ziheng,&He, Lei.(2021).Seismic responses analysis of multi-story suspended floors system.JOURNAL OF VIBROENGINEERING,23(1),167-182.
MLA	He, Qingguang,et al."Seismic responses analysis of multi-story suspended floors system".JOURNAL OF VIBROENGINEERING 23.1(2021):167-182.