Seismic performance of 3-D steel beam to concrete-encased CFST column joints: Tests
Seismic performance of 3-D steel beam to concrete-encased CFST column joints: Tests
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DOI：
10.1016/j.engstruct.2020.111793
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发表时间：
2021-04
影响因子：
5.5
通讯作者：
Wei Li;Li-Feng Xu;Wei-Wu Qian
中科院分区：
文献类型：
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作者：
Wei Li;Li-Feng Xu;Wei-Wu Qian
对钢梁-外包钢管混凝土节点的抗震性能进行了试验研究。共设计了12个内节点，包括6个平面内节点和6个三维内节点，并进行了试验。记录并分析了节点的破坏形态、滞回关系、变形和应变分布。从延性和能量吸收的角度对这些试件的抗震性能进行了评估。结果发现，平均层间位移角在破坏点的测试节点为0.033拉德。此外，三维节点的强度和延性比平面节点低。
Experimental investigations were conducted on the performance of steel beam to concrete-encased concrete-filled steel tubular (CFST) joints with reinforced concrete (RC) slab under seismic loading. A total of 12 interior joints, including six planar ones and six 3-D ones, were designed and tested. Failure patterns, hysteretic relations, deformation and strain distributions of these joints were recorded and analyzed. The seismic performance was evaluated from ductility and energy absorption perspectives for these specimens. It was found that the average inter-story drift angle at failure point for the tested joints was 0.033 rad. Moreover, the 3-D joints presented comparatively lower strength and ductility than planar counterparts.