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目前建筑工程中,楼梯多按照简支梁或简支板来设计,未充分考虑地震破坏作用,文章结合“安徽轻工国际贸易及研发中心”项目,提出梯段无缝的滑动支座现浇板式楼梯施工技术,并采用有限元分析软件MIDAS建立模型,基于地震反应谱法计算结果,对比分析不布置楼梯、布置普通板式楼梯和布置滑动支座楼梯三个模型,结果表明,滑动支座楼梯可以减小楼梯构件对整体抗震的不利影响,即在地震作用中只要保证结构的主体不倒塌,就可以发挥楼梯的疏散通道作用。
In the current construction projects, the stairs are mostly designed according to simply supported beams or simply supported plates, and the damage caused by the earthquake is not fully taken into account. Based on the project “Anhui Light Industry International Trade and R & D Center”, the article proposes a seamless slide support Cast-in-place stairway construction technology, and established the model by the finite element analysis software MIDAS. Based on the seismic response spectrum method, the three models were built, including the staircase without staircases, ordinary slab stairs and sliding support stairs. The results show that the sliding branch Staircase stairs can reduce the adverse impact of the overall anti-seismic components, that is, as long as the role of the earthquake to ensure that the main structure does not collapse, you can play the role of the stairs evacuation channel.