（中国建筑西南设计研究院有限公司， 成都 610042）

［摘要］科创园1号地项目由地下2或3层、地上13～19层的5栋高层办公塔楼及裙房、6栋地上1层商业组成。建筑造型复杂，结构整体表现为上部楼层U形平面和下部楼层独立分块的多塔，中间6～8层采用16.8，33.6m跨转换桁架形成回字形的强连接体。基于上述情况，进行了包括结构单体划分、结构布置、转换桁架形式和位置等结构方案比选，尽可能地减少了结构超限程度；  针对存在的扭转不规则、凹凸不规则、侧向刚度突变、竖向构件间断4项超限类型的典型超限结构单体，进行了性能化设计分析，并提出了加强措施。 结果表明，结构各阶段的性能水准均能满足设定的性能目标，抗震加强措施可靠可行。

［关键词］结构方案比选；  超限分析；  大跨转换桁架；  性能化设计

中图分类号：TU375-5文献标识码：A文章编号：1002-848X(2020)19-0098-09

Schemes comparison and out-code analysis of Kechuangyuan No.1 complex structures

XIONG Yaoqing, ZHOU Jinwei, WU Xiaobin, ZHANG Linfeng, MA Yanjie, TU Yu, YAO Songbai

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

Abstract:Kechuangyuan No. 1 project is composed of 5 high-rise office towers with 2 or 3 levels basement and 13～19 floors super structure and 6 commercial buildings with 1 floor super structure. The architectural form is complex. The upper and lower floors are multi towers with U-shaped plane and independent blocks respectively. The middle 6～8 floors form a annular shaped strong connector with 16.8m and 33.6m span transfer trusses. In view of the above situation, structural schemes were compared and selected including structural monomer division, structural layout, transfer truss form and position, so as to reduce the out-code degree of structure as much as possible. In view of typical out-code structural units with four out-code types of torsional irregularity, concave convex irregularity, lateral stiffness mutation and vertical component discontinuity, the performance-based design and analysis were carried out,  and strengthening measures were proposed. The results show that the performance level of each stage of the structure can meet the set performance objectives, and the seismic strengthening measures are reliable and feasible.

Keywords:comparison of structure schemes; out\|code analysis; large-span transfer truss; performance-based  design

作者简介：熊耀清，博士，高级工程师，一级注册结构工程师，Email：82023350@qq.com。