【作者】 任庆新； 孙明海； 贾连光； 刘德清；

【Author】 REN Qing-xin,SUN Ming-hai,JIA Lian-guang,LIU De-qing(School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China)

【机构】 沈阳建筑大学土木工程学院；

【摘要】 本文利用有限元软件ABAQUS建立了圆锥形中空钢管-钢筋混凝土叠合短柱轴压力学性能分析的有限元计算模型,并进行了12个圆锥形中空钢管-钢筋混凝土叠合短柱轴压试验。有限元计算与试验所得的荷载-位移全过程曲线及破坏形态吻合较好。在此基础上对其受力全过程中内钢管及混凝土应力分布情况进行了分析,同时给出了内钢管与混凝土之间的相互作用,并对锥度、材料强度、空心率、配筋率等参数对轴压时叠合短柱初始刚度、极限承载力及荷载-位移曲线的影响进行了比较。更多还原

【Abstract】 A finite element analysis(FEA) model for conical hollow steel tube-reinforced concrete laminate stub columns subject to axial compression is developed by ABAQUS,which is common FEA software.The corresponding tests of 12 stub columns under axial compression are conducted.The predicted load versus deformation relationship curves and failure modes are in good agreement with the measured results.The FEA model is then used to investigate the mechanisms of such composite columns further.The stress distribution of each component and the interactions between the inner steel tube and the reinforced concrete are analyzed.And then,the main parameters influencing on the initial stiffness,ultimate strength and load-deformation relationship curves such as taper,strength of the materials,hollow ratio and reinforcement ratio are investigated.更多还原