(青岛理工大学土木工程学院, 青岛 266033)

摘要: 为研究新型全装配式钢骨混凝土组合柱的抗震性能,采用 ABAQUS 软件对新型装配式组合柱进行了数值分析,基于试验研究结果,验证了有限元分析的可靠性。 通过建立 6 个不同参数变量的有限元模型,研究了连接模块核心方钢管板厚与轴压比对其抗震性能的影响规律。 结果表明:各试件的破坏模式主要集中在连接模块和柱脚处,并形成塑性铰,位移延性系数均值为 2. 98,极限位移角均值为 1 / 17,表现出良好的变形能力;随着轴压比的增大,模型的水平承载力、刚度及同级加载位移角下的耗能能力均明显提高,但延性降低;方钢管板厚的差异对模型的抗震性能影响较小。 虽然新型全装配式钢骨混凝土组合柱的抗震性能因模型设计参数的不同而有所差异,但总体上表现出良好的抗震性能。

关键词: 新型全装配式柱; 连接模块; 干式连接; 抗震性能; 有限元分析

中图分类号:TU398 文献标志码:A 文章编号:1002-848X(2022)13-0015-06

DOI:10. 19701 / j. jzjg. 20201184

Study on seismic performances of a new fully assembled steel-reinforced concrete composite column

WU Chenglong, WANG Chuanyi, WANG Qihui, LI Shaohui, LIU Jiming

( School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China)

Abstract:To study the seismic performance of new fully assembled steel-reinforced concrete composite column, themABAQUS software was used to carry out the numerical analysis of the new assembled composite column. Based on the results of experimental study, the reliability of the finite element analysis was proved. By establishing six finite element models with different parameters, the influence of the core square steel tube thickness of the connecting module and axial compression ratio on its seismic performance were studied. The results show that the failure mode of each specimen is mainly concentrated at the connecting module and the column foot, where the plastic hinge was formed. The average displacement ductility coefficient is 2. 98, and the average limit displacement angle is 1 / 17, showing good deformability. With the axial compression ratio increases, the horizontal bearing capacity, stiffness and energy dissipation capacity of the finite element models under the same level of loading displacement angle are significantly improved, but the ductility is reduced. Although the difference of the square steel tube thickness has little effect on the seismic performance of the model. The seismic performance of the new fully assembled steel-reinforced concrete composite column varies due to different model design parameters, it shows good seismic performance on the whole.

Keywords:new fully assembled column; connecting module; dry connection; seismic performance; finite element analysis