Seismic behavior analysis of steel-concrete composite frame structure system

被引：0
|
作者：
Liu, Jing-Bo [1 ]
Liu, Yang-Bing [2 ]
Guo, Bing [1 ]
机构：
[1] Department of Civil Engineering, Tsinghua University, Beijing 100084, China
[2] College of Civil Engineering, Chongqing University, Chongqing 400045, China
来源：
Beijing Gongye Daxue Xuebao/Journal of Beijing University of Technology | 2010年 / 36卷 / 07期
关键词：
Concretes - Composite beams and girders - Rare earths - Structural frames - Elastoplasticity - Seismic response;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
To investigate the seismic behavior of the steel-concrete composite frame structure system, a 4 poly-line plastic hinge model of the composite beam is suggested for the elastic-plastic analysis of the composite frame. And the analytic models of CB-CFST, SB-CFST, CB-ETRC, SB-ETRC and RC frame structures are separately created. Then the mode analysis, spectrum and the elastic time history analysis under frequent earthquake, elastic-plastic analysis under server earthquake of these structures are carried out. Results illustrate that compared with SB-CFST, the integral stiffness of CB-CFST is enhanced; natural periods are shortened; displacement responses are decreased overall. Compared with the CB-RC frame, under rare earthquakes, RC columns can not satisfy the demand of no collapsing with strong earthquake. And after increasing dimensions and reinforcement ratios of columns, the plastic hinge is also found at the end of columns.
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页码：934 / 941
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