1.湖南科技大学土木工程学院,湖南 湘潭411201
2.湖南省智慧建造装配式被动房工程技术研究中心,湖南 湘潭411201
3.中南大学土木工程学院,湖南 长沙410075
黄志(1984—),男,副教授,硕导,博士。主要从事组合结构抗震性能研究。E-mail: huangzhi@hnust.edu.cn
收稿:2023-07-01,
修回:2023-08-16,
纸质出版:2024-12-15
移动端阅览
黄志,俞科辰,陈俊炟等.四肢钢管混凝土格构柱‑箱梁节点抗震性能试验研究与优化分析[J].防灾减灾工程学报,2024,44(06):1368-1376.
HUANG Zhi,YU Kechen,CHEN Junda,et al.Experimental Study and Optimization Analysis of Seismic Performance of Four‑limb Concrete‑filled Steel Tube Lattice Column‑box Girder Joints[J].Journal of Disaster Prevention and Mitigation Engineering,2024,44(06):1368-1376.
黄志,俞科辰,陈俊炟等.四肢钢管混凝土格构柱‑箱梁节点抗震性能试验研究与优化分析[J].防灾减灾工程学报,2024,44(06):1368-1376. DOI: 10.13409/j.cnki.jdpme.20230701001.
HUANG Zhi,YU Kechen,CHEN Junda,et al.Experimental Study and Optimization Analysis of Seismic Performance of Four‑limb Concrete‑filled Steel Tube Lattice Column‑box Girder Joints[J].Journal of Disaster Prevention and Mitigation Engineering,2024,44(06):1368-1376. DOI: 10.13409/j.cnki.jdpme.20230701001.
为探究四肢钢管混凝土格构柱‑箱梁节点的破坏特征和塑性耗能性能,进行了三个四肢钢管混凝土格构柱‑箱梁节点的低周往复荷载试验。得到了其荷载-位移滞回曲线和骨架曲线。在试验研究基础上利用ABAQUS有限元软件建立了四肢钢管混凝土格构柱组合箱梁节点有限元模型,并与拟静力试验结果进行了对比验证,吻合较好。对节点核心区不同构造形式的四肢钢管混凝土格构柱‑组合箱梁节点进行了优化设计,探讨了节点核心区构造是否对称、核心区不同构造形式等因素对其耗能能力的影响。结果表明:核心区构造为横隔板的节点具有最佳的塑性耗能能力;核心区构造越对称,节点的塑性耗能能力越好;节点核心区的构造形式对节点的刚度退化影响较小;不同核心区构造的节点的残余变形率均较大,表现出良好的塑性性能。试验的研究成果为四肢钢管混凝土格构柱与组合箱梁节点的核心区部位的抗震性能分析提供了参考。
In order to investigate the failure characteristics and plastic energy dissipation performance of four-limb concrete-filled steel tube (CFST) lattice column-box girder joints
low-cycle reciprocating load tests were conducted on three different CFST lattice column-box girder joints. Load-displacement hysteresis curves and skeleton curves were obtained from the tests. Based on the tests
finite element models of four-limb CFST lattice column-box girder joints were established using ABAQUS
and the results were compared and validated with the quasi-static test results
showing good agreement. Optimization designs were conducted for the core region of the joints with different configurations
and the influence of factors such as the symmetry of the core region and different configurations on the energy dissipation capacity were investigated. The results indicated that the joints with a transverse diaphragm in the core region exhibited the best plastic energy dissipation capacity. The greater the symmetry of the core region
the higher the plastic energy dissipation capacity of the joint. The configuration of the core region had a minor influence on the stiffness degradation of the joint. Joints with different core region configurations showed significant residual deformation
demonstrating good plastic performance. The research findings of the tests provide reference for the seismic performance analysis of the core region of four-limb CFST lattice column-box girder joints.
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