海口中心主塔楼钢结构方案分析与设计

Analysis and design of steel structure scheme for main tower building of Haikou Center

海口中心主塔楼采用带加强层及斜支撑的钢框架-核心筒结构体系,采用SATWE和ETABS软件对结构进行了多遇地震下的反应谱分析和时程分析,并对计算结果进行了对比;为达到结构抗震多道防线设防的目的,对框架和支撑之间以及外框架和核心筒之间的水平剪力和倾覆力矩的分配关系分别进行了统计分析,并相应进行了剪力调整;对结构设定适宜的性能目标,完成了结构在设防烈度地震下的计算分析,采用ABAQUS有限元分析软件对结构进行罕遇地震作用下的动力弹塑性时程分析,从而实现结构的性能化设计。

The main tower building of Haikou Center adopts steel frame-corewall structural system with strengthening layers and inclined supports.Programs of SATWE and ETABS were used to conduct response spectrum analysis and time-history analysis on the structure under frequent earthquake respectively and the calculation results were compared.In order to reach the goal of multiple seismic defense lines of the structure,statistical analyses were conducted on the distribution relations of the horizontal shear force and overturning moment between the frame and supports,between outer frame and corewall.The corresponding shear force adjustment was conducted.Appropriate performance objectives were set for the structure.Calculation and analysis of the structure were completed under fortification earthquake.ABAQUS finite element analysis software was adopted for dynamic elastic-plastic time-history analysis on the structure under rare earthquake,so as to realize the performance-based seismic design of the structure.