基础隔震结构考虑摆动的弹塑性时程分析

Elasticity and Plasticity Time Domain Analysis of Base-isolated Structures with Swing

基础隔振结构的弹塑性时程分析大多只考虑了结构的平动,对于受竖向荷载较大的结构,其所采用的隔振橡胶垫可能因受力而产生竖向变形,导致结构摆动.通过推导考虑摆动的运动方程,并采用Matlab编制的弹塑性时程分析程序对结构进行分析计算.结果表明,较低层结构考虑摆动时顶层位移与不考虑摆动时相差不大,计算时可忽略其摆动.

Elasticity and plasticity time domain analysis of base-isolated structures is only done for the horizontal translation analysis.For the structures loaden the big vertical load,base-isolated rubber possibly has an obvious vertical displacement,it can cause structure swing.Using the equation of motion which consider structure′s swing and the Matlab programming,the analysis is done for the structure.The conclusion suggests that the lower structures′ top layer displacement with swing is nearly the same with the...