（启迪设计集团股份有限公司， 苏州 215021）

［摘要］介绍了某树形建筑的结构设计思路、结构布置、传力路径、结构设计特点和关键节点设计，采用PMSAP和ETABS软件进行了悬挑结构人行舒适度分析和性能化设计。讨论了树形建筑的结构性能及不同施工顺序下结构显著不同的受力结果，并介绍了相应的基础设计。结果表明，树形建筑能够实现抗震延性目标，并能提供足够的抗震承载力，可以保障结构安全。

［关键词］成束核心筒； 扭转效应； 楼板应力； 施工顺序； 抗震性能

中图分类号：TU318文献标识码：A文章编号：1002-848X(2017)20-0001-08

Out-of-code structural design of a tree-shaped building

Dai Yaping, Zhao Hongkang, Wu Chuanchuan, Ding Lei， Shi Weijian

(Tus\|Design Group Co., Ltd., Suzhou 215021, China)

Abstract:The design thought, structure layout, load transfer path, structural design characteristics and key nodes design of a tree-shaped building were introduced. PMSAP and ETABS software were used for pedestrian comfort analysis and performance design of the cantilever structure. The structural performance of the tree-shaped building and the different mechanical results of the structure under different construction sequences were discussed, and the corresponding foundation design was introduced. The results show that the tree-shaped building can realize the seismic ductility target, and can provide enough seismic bearing capacity, so that the structure is safe.

Keywords:bundle corewall; torsion effect; floor stress; construction sequence; seismic performance

作者简介：戴雅萍，硕士，教授级高级工程师，Email: yaping.dai@siad-c.com。