Experimental study on seismic behaviour of the outrigger truss-core wall spatial joints with peripheral CFST columns

doi:10.1016/j.istruc.2022.05.066

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Experimental study on seismic behaviour of the outrigger truss-core wall spatial joints with peripheral CFST columns
	Rui, Jia 2; Xian, Wei 1,2; Wang, Wen-Da 1,2; Zhu, Yan-Peng 1,2; Wang, Jing-Xuan 1,2
刊名	STRUCTURES
	2022-07-01
卷号	41 页码:1014-1026
关键词	Outrigger truss Seismic performance Failure mechanism Hysteresis curves Energy dissipation capacity
ISSN号	2352-0124
DOI	10.1016/j.istruc.2022.05.066
英文摘要	To understand the feasibility and seismic behaviour of the outrigger truss-core wall joints with peripheral concrete-filled steel tubular (CFST) columns, this paper presented an experimental study on outrigger trussconcrete shear wall joints under quasi-static cyclic loading. Two joint specimens with various details, namely, the length of the shear wall, were tested and intensively compared. The failure mode, load versus displacement hysteretic curve, strain distribution, failure mechanism and the key indexes reflecting the seismic behaviours, i. e., strength degradation, stiffness degradation, ductility and energy dissipation capacity of joints were analysed, respectively. The results show that the failure process of joints can be divided into three stages, namely, stress stages of shear wall and outrigger truss, outrigger truss and concealed column system, and failure stage of truss system, and the energy consumption of joints mainly occurs in the second stage. The failure of the two joints are located at the connection of outrigger truss and concealed column in shear wall. The length of wall has limited influence on the peak bearing capacity of joints, and the concentrated load of chord and web members of outrigger truss is transferred to shear wall through concealed column connection. The reasonable transition of stiffness of the connection between the shear wall and the outrigger truss should be adopted in the joint design, and the increase of the distance from the concealed column to the edge of the shear wall is beneficial to improve the mechanical performance and ductility of joints. The average ductility factor of two tested joints under the positive and negative loading is 1.67. The average value of the equivalent viscous damping coefficient of tested joints is 0.23, which is 130% higher than that of reinforced concrete joints of 0.1. These indicate that the tested joint exhibits a superior seismic performance and energy dissipation capacity.
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000814561800004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158869]
专题	土木工程学院
作者单位	1.Western Ctr Disaster Mitigat Civil Engn, Minist Educ, Lanzhou 730050, Peoples R China 2.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	Rui, Jia,Xian, Wei,Wang, Wen-Da,et al. Experimental study on seismic behaviour of the outrigger truss-core wall spatial joints with peripheral CFST columns[J]. STRUCTURES,2022,41:1014-1026.
APA	Rui, Jia,Xian, Wei,Wang, Wen-Da,Zhu, Yan-Peng,&Wang, Jing-Xuan.(2022).Experimental study on seismic behaviour of the outrigger truss-core wall spatial joints with peripheral CFST columns.STRUCTURES,41,1014-1026.
MLA	Rui, Jia,et al."Experimental study on seismic behaviour of the outrigger truss-core wall spatial joints with peripheral CFST columns".STRUCTURES 41(2022):1014-1026.