开封国际金融中心写字楼结构设计

Structure design on the office tower of Kaifeng international financial center

开封国际金融中心写字楼为36层的超高层建筑,结构体系为钢框架-钢筋混凝土核心筒。主要屋面结构总高度148.7m,核心筒高度157.1m,超过A级混凝土结构最大适用高度限值(130m)18.7m,约14.4%,低于B级高度限值(180m)和混合结构的最大使用高度限值(160m)。采用SATWE和MIDAS BUILDING软件进行了小震整体模型的弹性分析计算,验算了结构在中震下的承载力;采用MIDAS BUILDING软件进行了大震动力弹塑性时程分析。双筒间楼盖跨度达到了16.1m,采用MIDAS GEN软件分析了双筒之间大跨度楼板的舒适度。在大量分析计算的基础上,提出了相应的设计措施,使结构实现了预定的抗震性能化设计目标。目前,工程已顺利通过初步设计和施工图审查。

The office tower of Kaifeng international financial center is a 36-storey high-rise building,its structural system is steel frame-reinforced concrete core wall. The structural height of its main roof is 148. 7m,and the height of core wall is 157. 1m. The height is beyond the height limit of grade A( 130m) concrete structure 18. 7m,about 14. 4%,but under grade B height limit( 180m),and the height limit of mixed structure( 160m). General elastic analysis under frequent earthquake were performed by SATWE and MIDAS BUILDING,the bearing capacity of the structure under fortified earthquake was checked,the elastic-plastic time-history analysis under rare earthquake is carried by MIDAS BUILDING. The floor span between two core walls is 16. 1m,using the MIDAS GEN to analyze its comfort level. Based on the analysis,the corresponding structural measures were used to reach the target of performance-based seismic design. At present,the project has passed the preliminary design and construction drawing review.