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(青島理工大學(xué)土木工程學(xué)院, 青島 266033)

摘要: 為研究新型全裝配式鋼骨混凝土組合柱的抗震性能,采用 ABAQUS 軟件對(duì)新型裝配式組合柱進(jìn)行了數(shù)值分析,基于試驗(yàn)研究結(jié)果,驗(yàn)證了有限元分析的可靠性。 通過建立 6 個(gè)不同參數(shù)變量的有限元模型,研究了連接模塊核心方鋼管板厚與軸壓比對(duì)其抗震性能的影響規(guī)律。 結(jié)果表明:各試件的破壞模式主要集中在連接模塊和柱腳處,并形成塑性鉸,位移延性系數(shù)均值為 2. 98,極限位移角均值為 1 / 17,表現(xiàn)出良好的變形能力;隨著軸壓比的增大,模型的水平承載力、剛度及同級(jí)加載位移角下的耗能能力均明顯提高,但延性降低;方鋼管板厚的差異對(duì)模型的抗震性能影響較小。 雖然新型全裝配式鋼骨混凝土組合柱的抗震性能因模型設(shè)計(jì)參數(shù)的不同而有所差異,但總體上表現(xiàn)出良好的抗震性能。

關(guān)鍵詞: 新型全裝配式柱; 連接模塊; 干式連接; 抗震性能; 有限元分析

中圖分類號(hào):TU398 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):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