外墙外保温结构的抗震有限元分析

Finite Element Analysis on Seismic Action for the Structure of Outer Wall Insulation

外墙外保温结构因其良好的保温隔热性能而得到广泛的应用,目前我国已经出现了很多这样的结构,但是有关外墙外保温结构在地震作用下抗震性能的研究成果很少。本文主要应用大型有限元软件ANSYS,根据模拟实际的砖砌体、保温层和瓷砖贴面,建立三维模型,分析外墙外保温结构的抗震性能。研究结果表明:在罕遇地震作用下,保温层与基层墙体会发生脱离,从而易导致黏结在其上的瓷砖面层也随之脱落,因此,保温层结构在遭受罕遇地震作用时存在安全隐患。

The structure of out heat preservation of external wall is widely used because of its favorable heat preservation.Up to now,there have been a great mount of buildings using this structure in China,but the references relating with the structure of outer insulation wall are quite few.In this paper,by the means of establishing the three dimensional model,the seismic behavior of the structure is analyzed by use of ANSYS.The result shows that the heat preservation layer separated with the external wall under the rare earthquake,and the heat preservation layer has hidden danger.