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系统介绍了大中里项目超高层钢筋混凝土框架-核心筒建筑T2塔楼的结构抗震设防目标和计算分析。采用SATWE、ETABS进行结构内力和位移计算;采用SATWE中的弹性动力时程分析进行验算;补充静力弹塑性推覆分析(EPSA)和动力弹型性时程分析(MIDAS)。然后对T2塔楼的结构超限项进行判定和通过抗震设防专项审查。最后按要求进一步完善和加强抗震措施。结果表明T2塔楼结构设计满足规范相关要求,达到抗震设防目标。
This paper systematically introduces the structural seismic fortification objectives and calculation analysis of the T2 tower of the super high-rise RC frame-core building in Dazhongli Project. The structure internal forces and displacements were calculated using SATWE and ETABS. The calculation was performed by using elastic dynamic time-history analysis in SATWE. The static elastic-plastic pushover analysis (EPSA) and dynamic elastic modeling time history analysis (MIDAS) were supplemented. Then T2 tower structure of the overrun to determine and through the seismic fortification special review. Finally, according to the requirements to further improve and strengthen seismic measures. The results show that T2 tower structure design to meet the relevant requirements of the code to achieve the goal of seismic fortification.