天津君临大厦超高层结构设计

Structural design of super high-rise building of Tianjin Junlin Building

天津君临大厦是集商业、展览及办公等于一体的超高层综合性大楼。该楼采用钢筋混凝土剪力墙结构,建筑高度239.2m,远超规范7度抗震设防区B级高度150m限值,为此需对结构采用抗震性能化设计方法。采用两种软件对结构进行反应谱分析并对比,采用SATWE软件进行弹性时程分析及中震不屈服分析,利用PKPMEPDA程序对结构进行弹塑性时程分析。根据结构自身的特点以及分析结果对结构薄弱部位采取加强措施,保证了中震时结构薄弱部位及重要部位不屈服,大震时结构薄弱部位及重要部位满足弹塑性变形要求。

Tianjin Junlin Building is a super high-rise comprehensive building,which contains business,exhibition,office and so on. It adopts reinforced concrete shear wall structure with the building height of 239. 2m,which is far more than the limit of the code that is B-level height of 150 m in 7 degree seismic fortification zone. For this reason,structural performance-based seismic design method was conducted. Using two programs,response spectrum analysis of the structure and comparison were conducted,as well as elastic time-history history analysis and the yield analysis under intermediate earthquake using SATWE software. Elastic-plastic time-history analysis of the structure was conducted using PKPM-EPDA software. Based on the characteristics of the structure and analysis results,the structural weak positions were strengthened by some measures,which ensure structural weak parts and important parts not to yield under medium earthquake,and to meet the requirements of elastic-plastic deformation under rare earthquake.