高层建筑的墙体应用有限元分析时,为了考虑孔洞削弱的影响,需要加密网格,这就会出现节点未知数太多,特别是按整体空间分析时,计算机资源远远不能满足要求。本文用“等价膜”模型来考虑孔洞削弱的影响,借此先求得整幢高层建筑有关各点位移,然后再利用指定位移的办法求出开孔墙的内力。文中主要讨论“等价膜”模型概念,并给出计算实例。 When applying the finite element analysis to the wall of a high-rise building, in order to take into account the impact of hole weakening, an encrypted mesh is needed. This leads to too many unknown nodes, especially when the analysis is based on the overall space. Computer resources are far from meeting the requirements. This paper uses the “equivalent film” model to consider the effect of hole weakening, so as to first obtain the displacement of the entire high-rise building relative to each point, and then use the specified displacement method to find the internal force of the opening wall. In this paper, the concept of “equivalent film” model is discussed and a calculation example is given.