Seismic performance of joint between steel H‐beam and rectangular concrete‐filled hot‐rolled‐steel tubular column

Hanqin Wang, Qing Jiang, Zhipeng Huang, Junqi Huang, Xun Chong
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Abstract

In this paper, a new connection between the H‐beam and rectangular concrete‐filled hot‐rolled‐steel tubular column (CFHRSTC) was proposed to prevent the steel beam‐column joint protruded from the inside wall in residential buildings. The quasi‐static test and finite element analysis were conducted on four new joints to study the influence of the haunch stiffener configuration, internal steel plate thickness, and axial force on the failure mode, load‐carrying capacity, ductility, energy dissipating capacity, and stiffness degradation of the joint. The results revealed that the hysteretic curve of every joint was full. The damage to the joint was concentrated in the H‐beam, and the CFHRSTC remained elastic. The joint configuration could realize a weak beam‐strong column and joint core connection. Using the haunch stiffener on two sides of the H‐beam flange could effectively optimize load transfer at the end of the H‐beam and joint core. As the axial force increased, the ultimate load‐carrying capacity and ductility gradually decreased. Reducing the thickness of the internal steel plate did not significantly influence the seismic performance of the joint. Compared with the use of cover plate joints, the use of haunch stiffeners can effectively enhance the seismic performance of joints.
钢 H 型梁与矩形混凝土填充热轧钢管柱连接处的抗震性能
本文提出了一种 H 型钢与矩形混凝土填充热轧钢管柱(CFHRSTC)之间的新型连接,以防止住宅建筑中钢梁-柱连接处从内墙突出。对四种新型接头进行了准静力试验和有限元分析,研究了支撑加劲件配置、内部钢板厚度和轴向力对接头破坏模式、承载能力、延性、耗能能力和刚度退化的影响。结果表明,每个接头的滞后曲线都是饱满的。接头的损坏集中在 H 型梁,而 CFHRSTC 仍保持弹性。该连接构造可实现弱梁-强柱和连接核心筒的连接。在 H 型梁翼缘板两侧使用拱形加劲件可有效优化 H 型梁端部和连接核心筒的荷载传递。随着轴向力的增加,极限承载能力和延性逐渐降低。减小内部钢板的厚度对接头的抗震性能没有明显影响。与使用盖板连接相比,使用拱形加劲件可有效提高连接的抗震性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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