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前言在侧向水平载荷作用下结构的内力分析是高层建筑结构设计中的一个很重要的问题。当前,对结构进行内力计算方法方面,国内外都作了许多工作。按一般的三维有限元计算,其基本未知量的数目非常多,计算工作量是相当大的。本文根据等效弹性薄膜的概念[1]、[2],将外框架简化为纵、横方向的平面框架,由等效性能的连续体来代替,并应用高次平面应力元的组合体来模拟;内部芯筒或纵横剪力墙体系也作为高次平面应力元的
Introduction The analysis of the internal forces of a structure under lateral lateral loads is a very important issue in the design of high-rise building structures. At present, a lot of work has been done at home and abroad in terms of methods for calculating internal forces of structures. According to the general three-dimensional finite element calculation, the number of basic unknowns is very large, and the computational workload is quite large. In this paper, based on the concept of an equivalent elastic film [1], [2], the outer frame is simplified to a vertical and horizontal plane frame, which is replaced by an equivalent performance continuum, and a combination of high-order plane stress elements is used. Simulation; internal core barrel or shear wall system also serves as high-order plane stress element