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实腹式型钢混凝土T形柱恢复力模型试验研究
Experimental study on restoring force model of solid-web steel reinforced concrete T-shaped columns
投稿时间: 2016-10-08  最后修改时间: 2017-04-08
DOI:
中文关键词:  型钢混凝土  异形柱  低周反复加载试验  骨架曲线特征点  恢复力模型
英文关键词:steel reinforced concrete  special-shaped column  low cyclic loading test  characteristic point of skeleton curve  restoring force model
基金项目:
作者单位E-mail
刘祖强 西安建筑科技大学 liuzuqiang0081@126.com 
薛建阳 西安建筑科技大学  
杨青峰 西安建筑科技大学  
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中文摘要:
      为研究型钢混凝土T形柱的力学性能,完成了5个试件的低周反复加载试验,获得了滞回曲线和骨架曲线,分析了轴压比和配钢率对承载力和变形性能的影响。结果表明:实腹式型钢混凝土T形柱滞回曲线饱满对称,延性好;轴压比增大,承载力变化较小,延性降低;配钢率增大,承载力和延性均提高。基于试验及理论分析,提出了实腹式型钢混凝土T形柱骨架曲线的屈服点、峰值点和破坏点特征值计算方法,进而建立了三折线恢复力模型,为该类型结构的弹塑性地震反应分析提供依据。
英文摘要:
      In order to study the mechanical properties of solid-web steel reinforced concrete T-shaped columns, low cyclic loading test was conducted on 5 specimens. Hysteretic curves and skeleton curves were obtained,and the influence of axial compression ratio and shaped steel ratio on the bearing capacity and deformation performance was analyzed. The test results show that the hysteretic curves of the solid-web steel reinforced concrete T-shaped columns are plump and symmetry,and the ductility is good. The ductility of the column decreases with the increment of axial compression ratio, but there is no obvious change in the bearing capacity. With the increment of steel ratio, the bearing capacity and ductility of the column are improved. Based on the test and theoretical analysis, the calculation methods about characteristic value of the yield point,peak point and failure point at the skeleton curve of the solid-web steel reinforced concrete T-shaped columns were proposed, and then the trilinear restoring force model is established, which could provide reference for the elastic-plastic seismic response analysis of the steel reinforced concrete column structures.
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