高层结构楼梯参与整体作用的有限元分析

Finite element analysis of the overall role of the stairs involved in high-rise structures

研究了由台风引起的结构的顺风向风场,考虑脉动风的竖向相关性以及风速谱沿高层竖向位置变化的特点,采用不随高度变化的台风风谱,模拟出多点的脉动风速时程。将时程荷载施加在结构上,并分析了高层结构楼梯参与结构整体计算时的楼梯在结构中的作用。计算结果表明,在台风作用下,框架结构考虑楼梯及其周边构件时,对结构的顺风向最大位移和最大加速度都会有所影响,因此,整体分析应考虑楼梯构件的影响。通过一个实例计算结果比较,说明了楼梯构件参与结构整体工作的必要性。

Studies the structure caused by the typhoon wind to the wind farm,given the fluctuating vertical wind velocity spectra of relevance and vertical changes in position along the high-level features,using non-typhoon winds change with height spectrum,the pulse of simulated multi-point wind speed time cheng.The time-load exerted on the structure,and analyzes the structure of high-rise structures involved in the overall calculation of the stairs when the stairs in the structure of role.The results show that the typhoon frame structure under the action of the stairs and around the components to consider when the structure of the wind to the maximum displacement and maximum acceleration will be affected,so the overall analysis should take into account the impact of the staircase components.In this paper,an example calculation of comparison,shows the overall structure of the staircase components involved in the need.