高层EPS格构式混凝土墙体地震响应分析

Seismic Response Analysis of High-Rise EPS Lattice Type Concrete Wall

为了更全面地研究高层水泥聚苯模壳格构式混凝土墙体结构的抗震性能,本文基于12层框架—EPS格构式混凝土墙体结构高层住宅,运用ANSYS大型有限元数值模拟软件对其进行地震响应分析,并对8度多遇、基本设防、罕遇地震下三种不同地震波对结构的加速度放大系数、层间位移角和底部剪力进行了比较。得出该结构门窗洞口、外围突出角部位置和纵墙底部属于结构薄弱部位;在不同设防烈度作用下,EL-Centro波对结构的地震响应最大;在8度多遇地震(0.07g)作用下该结构处于弹性变形阶段,在基本设防地震(0.20g)作用下,开始进入塑性阶段;在罕遇地震TAFT波和EL-Centro波作用下结构超出规范中层间位移的限值要求,而在人工波作用下,结构处于弹塑性阶段且满足最大层间位移角限值要求。

In order to study the seismic behavior of the high-rise cement polystyrene mould shell lattice type concrete wall structure comprehensively,based on a twelve layer frame—EPS lattice type concrete wall structure high-rise residential,the seismic response analysis is carried out by using the ANSYS large finite element numerical simulation software,and the structure acceleration amplification factor,the story drift angle and the base shear force are compared in the following circumstance： 8 degree frequent earthquake,basic fortification and rare earthquake. It is concluded that the doors and windows of the structure,peripheral projecting angle position and the bottom of the longitudinal wall are the weak parts of the structure; the seismic response of the EL-Centro wave to the structure is the largest under different seismic fortification intensity; under the condition of 8 degrees of frequent earthquake（0. 07g）,the structure is in the elastic deformation stage,and it enters the plastic stage under the basic fortification earthquake（0. 20g）; under the action of the TAFT wave and EL-Centro wave,the structure is beyond the requirements of the standard inter story drift under the rare earthquake,and under the action of the artificial wave,the structure is in the elastic-plastic stage and meets the requirement of the maximum story drift angle.