【摘要】 从工程设计应用出发提出一种高层建筑结构三维直接动力分析方法．该方法通过利用子结构技术将高层建筑结构规模庞大的空间整体分析模型沿垂直方向划分成若干个规模相对很小的竖向子结构，从而最大限度地降低了三维动力分析中整体结构动力平衡方程的阶数．方法物理概念明确，通用性强，计算速度快．工程实例表明，采用本文方法可在一般微机上完成高层建筑结构的三维直接动力分析，计算结果能较好地反映出建筑物在地震作用下的三维动力特性，并可取得较高的计算精度．更多还原

【Abstract】 This paper presents a method of 3 D dynamic analysis for tall building structures.By the vertical substructure technique,the 3 D analysis model of tall building is sub divided into a few relatively small vertical substructures.Thus,the degrees of freedom of dynamic equations are greatly reduced.This method is clear in physical definition and it can be used for general purpose.What’s more,the CPU time it requires is only a fraction of those needed in the standard procedure.3 D seismic response analysis of tall building structures can be done on micro computers by means of this method.Finally,the reliability of the method is demonstrated with an example of real structure and some conclusions and suggestions are given.更多还原