Experimental investigation of a high strength steel frame with curved knee braces subjected to extreme earthquakes

被引：60

作者：

Zhou, Zeyu ^{[1
,2
]}

Chen, Yiyi ^{[1
,3
]}

Yam, Michael C. H. ^{[2
,4
]}

Ke, Ke ^{[5
]}

He, Xiuzhang ^{[1
,2
]}

机构：

[1] Tongji Univ, State Key Lab Disaster Reduct Civil Engn, Shanghai, Peoples R China

[2] Hong Kong Polytech Univ, Dept Bldg & Real Estate, Hong Kong, Peoples R China

[3] Shanghai Sanda Univ, Engn Sch, Shanghai, Peoples R China

[4] Hong Kong Polytech Univ, Chinese Natl Engn Res Ctr Steel Construct, Hong Kong Branch, Hong Kong, Peoples R China

[5] Chongqing Univ, Sch Civil Engn, Chongqing, Peoples R China

来源：

THIN-WALLED STRUCTURES | 2023年 / 185卷

基金：

中国国家自然科学基金;

关键词：

Shaking table tests; Hybrid structures; Steel frames; Curved knee braces; High strength steel; Extreme earthquakes; SEISMIC PERFORMANCE; BEHAVIOR;

D O I：

10.1016/j.tws.2023.110596

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this research, the seismic performance of a half-scaled three-storey high strength steel frame with curved knee braces (HSSF-CKB) under extreme earthquakes was investigated through shaking table tests. The test results demonstrated that the test structure maintained an encouraging recentring capacity under extreme earthquakes. By replacing the damaged curved knee braces, the structural stiffness was recovered to a certain extent. The failure mode of the test structure was governed by fracture of high strength steel beams, buckling of curved knee braces, and concrete crushing. Furthermore, a previously proposed analytical model for HSSF-CKBs was further validated by the test data.

引用

页数：16

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