Seismic behavior of precast sleeve-connected CFST column to RC beam connection

被引：0
|
作者：
Xu S. [1 ]
Li Z. [1 ]
Liu H. [1 ]
Jiang J. [1 ]
Jiao A. [1 ,2 ]
机构：
[1] Colleage of Civil Engineering, Chongqing University, Chongqing
[2] China Construction Seventh Engineering Division Co., Ltd., Zhengzhou
来源：
Li, Zhengliang (lizhengl@hotmail.com) | 2016年 / Harbin Institute of Technology卷 / 48期
关键词：
Concrete filled steel tubular column; Earthquake resistance; Finite element model; Precast composite connection; Sleeve connection;
D O I：
10.11918/j.issn.0367-6234.2016.06.020
中图分类号：
学科分类号：
摘要：
Combining the advantages of precast connections and concrete filled steel tubular (CFST) column to reinforced concrete (RC) beam connections, a stiffened precast sleeve-connected CFST column to RC beam connection was proposed. Considering axial compression ratio, connected angle and location of the connection, pseudo-static experiments were conducted to investigate the earthquake resistance of the connections, whose failure mode, failure mechanism, hysterical behavior, envelop curve, ductility and energy-dissipating capacity were analyzed. Fine finite element models were built and verified by ABAQUS. The results show that: this type of connection could exhibit “strong CFST column-weak RC beam” and “strong connection-weak member” failure mechanisms and have excellent load carrying capacity, specimens fail due to the fracture of longitudinal reinforcement up until vertical displacement of beam-end reaches to 3-4.5 times of yield displacement; this type of connection also has excellent energy dissipating capacity and ductility, ductility coefficients of the connections with a 45 degree connected angle and 90 degree connected angle are respectively greater than 3 and 4. © 2016, Editorial Board of Journal of Harbin Institute of Technology. All right reserved.
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页码：124 / 131
页数：7
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