某超高层关键构件中震作用下承载力及转换桁架抗连续倒塌验算

Calculation of bearing capacity and continuous collapse resistance of transfer truss for key components of a super high-rise building under moderate earthquake action

对超高层的关键构件转换桁架、支承转换桁架的柱、核心筒底部加强区剪力墙,转换桁架所在楼层及其上下层核心筒剪力墙及转换桁架上下弦杆所在楼层的连梁,进行设防烈度地震弹性验算。并对转换桁架进行抗连续倒塌验算。考察在偶然作用工况下,主要承重结构在一段时间内不发生连续倒塌的可靠度。

The transfer trusses,the columns supporting the transfer trusses and the shear walls in the reinforced area at the bottom of the core tube were studied,the shear walls of the core tube and the coupling beams of the upper and lower chords of the truss are converted to the floors where the truss is located.The continuous collapse resistance of the transfer truss is checked.The reliability of the main load-bearing structure without continuous collapse in a period of time was investigated.