层间隔震结构隔震层位置对下部结构的影响

On influence of isolation floor position of interlayer seismic isolation structure on lower structure

以某框架剪力墙结构的层间隔震建筑为例,利用有限元分析软件Etabs 2013非线性版建立了其简化分析模型,通过改变隔震层位置,对比分析了隔震层分别设置在第一层柱顶和第四层柱顶时,该模型的隔震层以下结构在大震下的动力特性,指出在设计隔震层位置时,宜低不宜高。

Taking some interlayer isolation building of some framework shearing structure as the example,based on the finite element analysis software Etabs 2013 nonlinear edition established its simplified analysis model,through changing the isolated layer position,the paper compares and analyzes the dynamic features of the lower structure under the seismic isolation structure of the model when the seismic isolation layers are located at the first-floor and fourth-floor column tops,and points out the position should be lower in the design of the seismic isolation layer.