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Nonlinear Finite-Element Analysis of the Seismic Behavior of RC Column-Steel Beam Connections with Shear Failure Mode
| 题名： | Nonlinear Finite-Element Analysis of the Seismic Behavior of RC Column-Steel Beam Connections with Shear Failure Mode |
| 正文语种： | eng |
| 作者： | Tao, Yuchen;Zhao, Weijian;Shu, Jiangpeng;Yang, Yuanzhang |
| 作者单位： | Zhejiang Univ Coll Civil Engn & Architecture Hangzhou 310058 Peoples R China;Zhejiang Univ Coll Civil Engn & Architecture Hangzhou 310058 Peoples R China;Zhejiang Univ Coll Civil Engn & Architecture Hangzhou 310058 Peoples R China;Zhejiang Univ Coll Civil Engn & Architecture Hangzhou 310058 Peoples R China |
| 关键词： | RC column-steel beam (RCS) connections;Finite-element analysis;Seismic behavior;Shear failure;Cyclic loading |
| 摘要： | RC column-steel beam (RCS) systems, a novel type of hybrid structure, have been used widely in recent decades owing to their excellent seismic performance and simple fabrication process. However, due to the effects of variable strengthening configurations on force-transfer mechanisms, the mechanical behavior of RCS connections has not been fully understood by existing experimental studies. This paper proposes a reliable finite-element model of RCS connections and investigated the effects of different strengthening configurations and design parameters on the seismic performance and shear mechanism. A detailed three-dimensional finite-element model was developed and validated against previously obtained experimental results, including load-displacement relationships and cracking patterns. Parametric studies based on the validated model were conducted. The studies showed that the axial load ratio significantly affects the failure mode and ductility of the connection. The load-carrying capacity of the connection is enhanced significantly when the concrete strength is increased. Furthermore, additional yield capacity of steel plates and transverse reinforcements has limited effects on crack propagation and strain state when adequate resistance can be provided. |
| 出版年： | 2021 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 147 |
| 期： | 10 |
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