(中衡设计集团股份有限公司, 苏州 215123)

摘要: 苏州合景太湖新城商务中心地块一的裙房为 7 层商业,主楼为 39 层办公楼,主楼偏置于建筑平面北侧,结构平面在 7 层处有较大收进. 主楼采用钢筋混凝土框架-核心筒结构体系,裙房部分采用框架-剪力墙结构体系,裙房与主楼采取不设缝方案. 该项目为超限高层建筑,结构具有扭转不规则、塔楼偏置、局部穿层柱以及楼板不连续四项平面不规则项. 根据结构不规则判别结果,针对抗震薄弱部位及关键构件选用适当的抗震性能目标,依据不同抗震性能目标采取一系列针对性抗震加强措施. 采用 SATWE 对结构进行了小震弹性时程分析,并采用、MIDASBuilding 进行了小震弹性时程补充分析ꎻ采用 SAUSAGE 对结构进行大震弹塑性时程分析. 结果表明,该项目的结构体系选择合理,具有良好的抗震性能,能够达到预定的抗震性能目标.

关键词: 超高层结构;不设防震缝结构;抗震性能目标;抗震性能水准;抗震性能设计;体型收进

中图分类号:TU318.2 文献标志码:A 文章编号:1002-848X(2022)20-0099-05

DOI:10.19701 / j.jzjg.ZJ220097

Performance-based seismic design and analysis of super high-rise structure in Suzhou Hejing Taihu New Town Business Center

ZHOU Huixin, HAO Shengqun, LI Tao, ZHANG Wang, WANG Xuecheng, WANG Gan

(ARTS Group Co. , Ltd. , Suzhou 215123, China)

Abstract:The podium of plot 1 in Suzhou Hejing Taihu New Town Business Center is a 7-story commercial building, andthe main building is a 39-story office building. The main building is located on the north side of the plane, and thestructural plane has a larger shape retraction at the 7th floor. The main building adopts reinforced concrete frame-core tubestructure system, and the podium part adopts frame-shear wall structure system, and the podium and the main buildingadopt the scheme of no seam. The project is an out-of-code high-rise building, and the structure has four planeirregularities, namely, torsional irregularity, tower offset, local cross-layer column, and floor slab discontinuity. Accordingto the results of structural irregularity discrimination, appropriate seismic performance targets were selected for the weakseismic parts and key components, and a series of targeted seismic strengthening measures were taken according to differentseismic performance objectives. SATWE was used to conduct elastic time history analysis of the structure under smallearthquake, and MIDAS Building was used to conduct elastic time history supplementary analysis of the structure undersmall earthquake. SAUSAGE was used to conduct elastic-plastic time history analysis of the structure under rareearthquake. The analysis results show that the structural system of the project is reasonably selected, has good seismicperformance, and can achieve the predetermined seismic performance targets.

Keywords: super high-rise structure;structure without anti-vibration seam;seismic performance objective;seismicperformance level;performance-based seismic design;shape retraction

∗中衡设计集团科研项目(2019-S3):超高层结构体系与设计技术研究.

第一作者:周慧鑫,硕士,高级工程师,一级注册结构工程师,主要从事商业综合体及超高层结构设计,Email: zhouhuixin@artsgroup. cn.

[引用本文] 周慧鑫,郝胜群,李韬,等. 苏州合景太湖新城商务中心超高层结构抗震性能化设计与分析[J]. 建筑结构,2022,52(20):99-103,142. ZHOU Huixin,HAO Shengqun,LI Tao,et al. Performance-based seismic design and analysis of superhigh-rise structure in Suzhou Hejing Taihu New Town Business Center [J]. Building Structure,2022,52(20):99-103,142.