深圳某高层塔楼的钢筋混凝土框筒方案设计

The RC Core-wall-frame Structure Design of High-rise Building in Shenzhen

深圳某主塔楼结构高度298 m,结构体系采用无加强层的钢筋混凝土框架-核心筒结构体系,低区采用圆钢管叠合柱,低区剪力墙设置型钢进行加强。通过对结构剪力墙与外框架柱基于轴压比进行截面细化,使减少自重并其达到一定刚度从而实现无需设置伸臂桁架与腰桁架。采用ETABS和SATWE软件进行结构设计与分析,各项指标满足规范要求。并采用Perform-3D对结构进行大震弹塑性时程分析与构件性能评估。最后介绍了应用于项目的2种叠合柱-混凝土梁的节点做法及相关设计方法。通过工程实例说明在7度区,核心筒占比较大,接近300 m的钢筋混凝土塔楼经过合理设计,在不需要设置加强层的情况下仍能满足刚度要求。叠合柱相对于型钢混凝土具备较好的经济性,文章对类似的工程项目具备一定的参考意义。

The main tower of Shenzhen project of is 298 m high-rise building,and its structural system is a reinforced concrete frame core wall structure system without outriggers and belt trusses.A Laminated column and SRC wall are applied in the low zone structure.In this paper,by the method optimizing the structural wall and column size to achieve the acceptable lateral stiffness,finally,avoid applying the outriggers or belt trusses on structure.ETABS and SATWE program are used for structural elasticity analysis.Structural system meets the specification requirements according to codes.Program Perform-3D is used for the nonlinear time history analysis under severe earthquake lev‐el and checking of member performance.The design and analysis method for two types of RC beam-laminated column connections are in‐troduced in this paper.This paper shows the RC frame tube system for building in 7-degree zone with larger core,nearly 300 m height which has been reasonably designed can still meet the stiffness requirements without outriggers and belt trusses,laminated columns have bet‐ter economic efficiency compare to SRC column.This paper has certain reference significance for similar projects.