（中国建筑西南设计研究院有限公司， 成都 610042）

［摘要］介绍了某建筑高度约345m的超高层建筑外立面收进结构的实现方法。对于三种实现方式的转换柱（斜柱、楔形柱、矩形搭接柱）及转换区楼面梁和剪力墙的受力进行了比较分析，重点介绍了转换区构件的传力路径、应力、变形、损伤等力学特征，并考察了不同形式转换柱对结构整体性能的影响。分析结果表明，转换区局部楼层刚度的变化对整体结构影响不大，但转换柱截面尺寸对层间受剪承载力的影响较大，同时会导致转换区框架承担的剪力比例高于普通楼层。最后针对转换区核心筒墙体在重力和地震荷载作用下在水平方向均存在较大拉力的情况，采取了特别的结构加强措施以抵消对核心筒墙体受力的不利影响。

［关键词］超限高层建筑；  斜柱转换；  楔形柱转换；  矩形搭接柱转换

中图分类号：TU318+.2文献标识码：A文章编号：1002-848X(2020)19-0056-06

Design and research on transfer column of a 345m super high-rise building structure

SONG Taowei, FENG Yuan, HE Jianbo, XIAO Kejian, FENG Zhongwei, LI Yingjun, LIAO Zuoxia, XU Liwen

(China Southwest Architectural Design and Research Institute Co., Ltd., Chengdu 610042, China)

Abstract:The realization methods of the structural setbacks in elevation of a 345m super high-rise building were introduced. The forces of components in three realization methods were analyzed and compared, including transfer columns (inclined columns, wedge-shaped columns and rectangular overlap columns) and the floor beams and shear walls of the transfer areas. The mechanical characteristics of the force transmission path, stress, deformation, and damage of the components in the transfer area were introduced emphatically, and the influence of different types of transfer columns on the overall performance of the structure were investigated. The analysis results show that the change of local floor stiffness in the transfer area has little effect on the overall structure, but the cross-sectional size of the transfer column has a greater impact on the shear bearing capacity between floors, and at the same time it will cause the frame of the transfer area to bear a higher proportion of shear force than ordinary floors. Finally, in view of the large tensile force in the horizontal direction of the corewall in the transfer area under the action of gravity and seismic load, special structural strengthening measures were taken to offset the adverse effects on the corewall.

Keywords:out-of-code high-rise building; inclined column transfer; wedge-shaped column transfer; rectangular overlap column transfer

作者简介：宋涛炜，硕士，高级工程师，一级注册结构工程师，Email：16403112@qq.com。