楼梯对结构整体设计影响分析

Analysis on the Influence of Stairs to the Overall Structure Design

随着建筑业的迅猛发展,传统楼梯设计中的不足在地震中一次次凸显。滑动支座楼梯日益得到发展。本文在结合工程实例的基础上对有楼梯、无楼梯和楼梯间不同滑动支座布置形式对结构抗震性能的影响进行了分析。设计了楼梯参与结构整体计算模型、框架楼梯间设滑动支座模型以及无楼梯模型。运用PKPM软件,得到三种模型在相同工程背景下的最大楼层位移、层间位移角、周期、楼层剪力、倾覆弯矩,对比分析楼梯对结构整体设计的影响。

With the rapid development of construction industry, the deficiency of traditional stair design highlights in the earthquake.On the basis of project, the model of staircase together with building structure, the structural model of frame-staircase with sliding supports and the model without stairs are designed. Using PKPM software, the maximal storey drift, inter-laminar displacement angle, period, story shearing force, overturning moment of these three models under the same project background are obtained. Then, compareing these analysis,it is concluded that the stairs have a great influence on the integral structural design.