考虑楼板组合作用的钢管混凝土柱-钢梁节点抗震性能研究
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TU398. 903

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国家自然科学基金项目(面上项目,重点项目,重大项目),创新研究群体科学基金,中国石油科技创新基金


Study on Seismic Behavior of Concrete Filled Steel Tubular Columns with Consideration of Floor Combination
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    摘要:

    为研究在楼板组合作用下钢管混凝土节点的抗震性能,本文按照1:2比例制作了两个不同梁柱线刚度比的带楼板钢管混凝土柱钢梁节点试件。试验利用MTS液压加载系统对节点梁端施加循环往复荷载进行拟静力试验,并利用ABAQUS软件建立有限元模型进行数值模拟分析。通过试验与有限元模拟,得到了节点的滞回曲线、骨架曲线、延性系数、强度退化和刚度退化等性能参数。结果表明:两个节点试件在楼板组合作用下,滞回曲线饱满,节点表现出良好的抗震性能;在轴压比不变的情况下,随着梁柱线刚度比的增加,节点的延性、强度和刚度均有所提高;有限元模拟结果与试验结果吻合较好,验证了有限元模型的准确性,为参数分析提供了依据。

    Abstract:

    In order to study the seismic performance of concrete-filled steel tubular joint under the action of floors, two different beam-column stiffness ratios of steel-reinforced concrete column steel beam joints were made according to the 1:2 ratio. The quasi-static test was carried out by applying the cyclic reciprocating load to the beam end of the joint using the MTS hydraulic loading system, and the finite element models were established by ABAQUS software for numerical simulation analysis. The hysteresis curve, skeleton curve, ductility, strength degradation and stiffness degradation of the joints were obtained by experiments and finite element simulations. The results show that the specimens have full hysteresis curve under the action of floor and show good seismic performance. When the axial compression ratio is constant, the ductility, strength and stiffness of the joints are improved. The finite element simulation results are consistent with the experimental results, which verify the accuracy of the finite element models and provide a basis for parameter analysis.

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徐晋东,田江平,廖恒,等. 考虑楼板组合作用的钢管混凝土柱-钢梁节点抗震性能研究[J]. 科学技术与工程, 2020, 20(26): 10864-10870.
xujindong, tianjiangping, 杜国锋. Study on Seismic Behavior of Concrete Filled Steel Tubular Columns with Consideration of Floor Combination[J]. Science Technology and Engineering,2020,20(26):10864-10870.

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历史
  • 收稿日期:2019-04-11
  • 最后修改日期:2020-06-09
  • 录用日期:2019-07-08
  • 在线发布日期: 2020-10-21
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