串联隔震结构的抗连续倒塌性能

Progressive collapse resistance performance of serial vibro-isolation structures

以某工程串联隔震结构为工程背景,对串联隔震结构进行抗连续倒塌性能研究.采用非线性有限元软件MSC.Marc建立该串联隔震结构精细化有限元模型,运用非线性动力拆除构件法研究该结构,并根据DOD2013所提出结构连续倒塌的失效准则进行评价.研究结果表明:串联隔震结构角柱区域为整个结构抗连续倒塌性能最薄弱环节,隔震层角柱和角柱隔震垫需进行加强和保护;随着楼层的增高,串联隔震结构抗连续倒塌性能逐渐变差.

Taking serial vibro-isolation structure in a project as engineering background,its progressive collapse resistance of serial isolation structure performance is studied.Its fine-structure finite element model is established with nonlinear finite element software MSC.Marc.A nonlinear dynamic component removal method is used to study this structure and its result is evaluated according to the failure criterion presented by DOD2013for the progressive collapse resistance of serial vibro-isolation structure.The study result shows that the area around corner column of the serial vibro-isolation structure will be the weakest link in the whole structure,so that the corner column of vibro-isolation storey and isolation bearing will need to be strengthened and protected.With the increase of storey,the progressive collapse resistance performance of the serial vibro-isolation structure will gradually be deteriorated.