某超限高层建筑转换梁及其支撑柱设计

Design of Transfer Beams and Support Columns for an Ultra-high Rise Building

某工程西侧和南侧入口大堂处转换梁为方钢管,其支撑柱为方钢管混凝土穿层柱。作为该超限高层建筑中的关键构件,转换梁及其支撑柱采用了考虑竖向地震作用的切榀模型进行设计,并验算了穿层支撑柱的承载能力。此外,利用ANSYS软件对转换梁、柱节点的承载力进行了有限元分析。计算结果表明,入口大堂处的转换梁及其支撑柱设计可靠,满足预期的抗震性能目标。

The transfer beams at the west and the south entrance lobbies in this building are squared hollow steel sections and the support columns are consist of concrete-filled squared steel tubes,which are cross layer columns.To design these key structure members,i.e.,the support columns and the transfer beams in this ultra-high rise building,cutting truss models considering vertical seismic action were applied.The capacity of the cross layer support columns was also checked.In addition,finite element analysis on transfer beam-column joints was carried out by using ANSYS.The calculation results show that the design of the transfer beams and the support columns is reliable and can achieve the expected performance-based seismic design objectives.