吊杆式钢楼梯的设计和研究

Design and Research of Steel Stairs with Suspender

出于空间无遮挡的视觉要求,对苏州大剧院中北部的半室外钢楼梯采用了无梯柱的吊杆支撑形式。对该吊杆式钢楼梯进行静力分析、自振模态分析、地震响应分析,以及人行激励荷载下的舒适度分析,发现该楼梯的最大应力比、最大挠度、最大水平位移、层间位移角、前三阶模态的频率、舒适度等均满足设计规范的要求。

In order to meet the visual requirements of space without shelter,the semi outdoor steel stairs in the north central part of Suzhou grand theater are supported by suspenders without ladder columns.The static analysis,self-vibration modal analysis,seismic response analysis and comfort analysis under pedestrian excitation are carried out for the suspender type steel staircase.It is found that the maximum stress ratio,maximum deflection,maximum horizontal displacement,inter-story displacement angle,frequency of the first three modes,and comfort level of the staircase all meet the requirements of the design specification.