（北京维拓时代建筑设计股份有限公司， 北京 100025）

［摘要］对某大底盘单塔偏置超限高层结构进行多软件小震反应谱对比分析、小震弹性时程分析、中震不屈服验算以及大震下静力弹塑性分析，了解结构的地震响应特点以及塑性铰发展规律，对薄弱部位采取相应的加强措施；并对穿层柱进行屈曲分析，对裙房顶部楼板以及连桥与裙房连接位置楼板进行小震下楼板拉应力分析。分析结果表明结构具有良好的抗震性能，完全能满足预定性能目标的要求，也能满足“小震不坏，中震可修，大震不倒”三水准的设计要求，可为同类大底盘单塔偏置建筑的结构设计提供参考。

［关键词］大底盘单塔偏置； 性能目标； 静力弹塑性分析； 楼板拉应力

中图分类号：TU398-7文献标识码：A文章编号：1002-848X(2019)16-0031-06

Structural design of an out-of-code high-rise eccentric single-tower building with large base

Liu Qingjiang, Li Yazhou, Xie Shuaitao, Li Hongqiu

（Beijing Victory Star Architecture & Civil Engineering Design Co., Ltd., Beijing 100025, China）

Abstract:The multi-software comparative response spectrum analysis under frequent earthquake, elastic time history analysis under frequent earthquake, non-yielding checking calculation under moderate earthquake and static elastic-plastic analysis under rare earthquake were analyzed for an out-of-code high-rise eccentric single-tower building with large base. The seismic response characteristics and development law of plastic hinge of the structure were understood and corresponding strengthening measures were taken for weak parts. Buckling analysis of cross-story columns was carried out, and tensile stress analysis of the roof slab of podium and the floor slab between the bridge and the podium under frequent earthquake was carried out. The analysis results show that the structure has good seismic performance and can fully meet the requirements of predetermined performance objectives and can also meet the three-level design requirements of “no damage under frequent earthquake, repairable under moderate earthquake, no collapse under rare earthquake”, providing for the structural design of similar eccentric single-tower building with large base.

Keywords:eccentric single-tower building with large base; performance objective; static elastic-plastic analysis; tensile stress of floor slab

作者简介：刘庆江，学士，高级工程师，一级注册结构工程师，Email：liuqingjiang@vtjz.com。