带滑动支座板式楼梯设计技术措施

Technical Measures for Design of Slab-Stairs with Slide Bearing

对于钢筋混凝土框架结构,楼梯构件与主体结构整体浇筑时,梯板起到斜支撑的作用,对结构刚度、承载力、规则性的影响较大,按照相关规范,应参与抗震计算。如果采取措施,如梯板滑动支承于平台板,这样楼梯构件对结构刚度、承载力、规则性的影响较小,是否参与整体抗震计算差别不大,此种情况下可以不参与整体计算。本文主要介绍了带滑动支座楼梯的设计要点,由于带滑动支座楼梯设计简便、结构合理,得到了广泛的应用。

For the reinforced concrete frame structures,when the stair and the main structure are integral concreted,the slab plays the role of inclined support,which has a great influence on the rigidity,bearing capacity and regularity.According to relevant specifications,it should participate in seismic calculation.If measures are taken,such as the sliding support of the ladder plate on the platform plate,the influence of the stair on the structural rigidity,bearing capacity and regularity is small,and whether there is little difference in the overall seismic calculation is involved.In this case,the integral calculation may not be involved.This paper mainly introduces the design points of the stairs with sliding support.Because of the simple design and reasonable structure of the sliding support,it has been widely used.