【作者】 陈鑫； 赵乃志； 李兵；

【Author】 CHEN Xin,ZHAO Nai-zhi,LI Bing(The 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】 本文应用Mander程序对不同肢长异型柱在低周往复水平荷载作用下的试验进行数值模拟,研究其破坏机理和破坏形式,与以前所做试验结果进行对比分析,验证不同肢长对异型柱抗震性能的影响。综合考虑异型柱构件的刚度、强度、延性、耗能等力学特性,提出简单、合理的异型柱恢复力模型;结果表明:在轴压比较大时,其承载力、侧移刚度较大,但延性较差;随着柱子肢长的增加,其承载力、侧移刚度随之提高,这对结构设计有一定的好处,但肢长应控制在一定的范围内,避免形成短柱。由于仅考虑单方向水平拉压的低周反复作用,而地震作用方向是随机的,今后对于多方向的周期反复荷载作用下异型柱的性能应进一步研究。更多还原

【Abstract】 The R.C.Frame with special-shaped columns is a new structure system developed from frame structure system,which mainly solves the problem that the corner stretch out of the wall when light-weight wall slab and air-entrained concrete building block,frame’s rectangular columns and square columns are changed to T-shaped,L-shaped and +-shaped columns.On this paper,the numerical simulation analysis on special-shaped columns with different flange under cyclic loading is calculated by Mander program.The failure mechanism and format are studied,and contrast with previous test figure.The mechanics characteristic,such as stiffness,strength,ductility and dissipation of energy,is considered.The simple and reasonable restoring force model is offered.The quantity conclusion about flange is provided.The affect on special-shaped columns’ earthquake-resistant behavior with different flanges is verified.更多还原