Experimental investigation on seismic performance of assembled concrete-filled double-skin steel tube-steel beam frames

被引：0
|
作者：
Zhao J. [1 ]
Hu Y. [1 ,2 ]
Zhang D. [1 ]
Chen C. [1 ]
机构：
[1] School of Civil Engineering, Chang'an University, Xi'an
[2] School of Civil Engineering, Central South University of Forestry and Technology, Changsha
来源：
Hu, Yi (hyi_1991@163.com) | 1600年 / Science Press卷 / 41期
关键词：
Composite structure; Concrete-filled double-skin steel tube; Fabrication; Quasi-static experiment; Seismic performance;
D O I：
10.14006/j.jzjgxb.2018.0688
中图分类号：
学科分类号：
摘要：
In this paper, a structural system that could realize fully-assembled construction of concrete-filled double-skin steel tube (CFDST) frames was proposed. The system includes assembled CFDST column-to-column connections and assembled block-type beam-to-column connections. To evaluate the effects of these proposed connections on the seismic performance of CFDST frames, quasi-static test on three 1: 2 scaled frame models(including a frame with weld-bolt beam-to-column joint, a frame with assembled beam-to-column joint and a frame with assembled column and beam-to-column joint) was conducted. The failure modes, hysteretic performance, ductility, strength and stiffness degradation of these specimens were obtained. All of these specimens exhibit good lateral resistance and ductility, the maximum inter-story drift and the displacement-based ductility coefficient of most of the test specimens exceed 4% and 4, respectively. The results show that: both of CFDST frames with traditional and with proposed connections have good seismic performance; the proposed column-to-column connection is reliable and has little influence on lateral resistance, lateral stiffness and ductility of the CFDST frames; the proposed block-type beam-to-column connection could improve the ductility of the CFDST frames, and it could slightly increase the lateral resistance of the CFDST frames. © 2020, Editorial Office of Journal of Building Structures. All right reserved.
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页码：88 / 96
页数：8
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