十字形钢管混凝土芯柱在不同约束条件下侧向冲击作用的动力响应分析  

DYNAMIC RESPONSE ANALYSIS OF THE CROSS-SHAPED CONCRETE-FILLED STEEL TUBE CORE COLUMN WITH DIFFERENT BOUNDARY RESTRAINTS UNDER LATERAL IMPACT

作　　者：于璐[1] 徐亚丰[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《工程力学》2012年第A02期201-204,共4页Engineering Mechanics

基　　金：辽宁省重点实验室开放基金项目(JG-200904);辽宁省教育厅科学研究项目(LS2010131)

摘　　要：研究十字形钢管混凝土芯柱在侧向冲击作用下的动力响应与约束条件的关系。利用有限元分析软件ABAQUS对4根十字形钢管混凝土芯柱构件在侧向冲击作用下的动力响应进行了模拟和分析比较。通过构件的位移时程曲线可知,除悬臂构件的最大侧向位移出现在自由端外,其余构件最大侧向位移都出现在冲击部位。比较分析不同约束条件下构件的位移时程曲线可以总结出,随着约束的减弱,构件侧向位移随之增大。The purpose of this paper is to investigate the relationship between dynamic response and boundary restraints of the cross-shaped concrete-filled steel tube core column under lateral impact. The dynamic response of 4 columns under lateral impact was simulated and analyzed by means of the finite element analysis software ABAQUS. Through the displacement-time curves of the columns we observed that except the cantilever column whose maximum displacement occurred at the free end, the maximum displacement occurred at the position where lateral impact applied for all the other the columns. By comparing the column displacement under different constraints, it was demonstrated that the weaker the constraints, the larger the maximum displacement.

关 键 词：结构工程 动力响应 数值模拟 侧向冲击 钢管混凝土 约束条件 

分 类 号：TU398.9[建筑科学—结构工程]