（北京市建筑设计研究院有限公司， 北京 100045）

［摘要］中建三局北方总部大楼中庭为造型独特双V字斗形不落地空间，设计中对其结构体系进行对比论证，采用性能化抗震设计方法，并在计算分析中采用多种软件校核，计算结果按照多个模型包络设计，提出了详细的构造加强措施。详细分析了悬挂结构的竖向地震作用、施工模拟、防连续倒塌、关键节点等，并对整体结构采用ABAQUS软件进行了大震下弹塑性分析，对损伤严重部位进行补强设计。基础采用整体梁式筏板基础，有效控制悬挂支撑结构各部分的差异沉降。计算结果表明结构安全，设计合理。

［关键词］悬挂结构； 性能设计； 施工模拟； 防连续倒塌

中图分类号：TU398+.9文献标识码：A文章编号：1002-848X(2020)03-0028-06

Performance analysis and design of North Headquarters Building of China Construction Third Engineering Bureau

Liu Changdong, Lu Qinggang, Ge Dongdong, Liu Hua, Liu Yonghao, Huang Lin

（Beijing Institute of Architectural Design，Beijing 100045, China）

Abstract:The atrium of the North Headquarters Building of China Construction Third Engineering Bureau is a unique double-V-shaped funnel-shaped non-landing space. In the design, the structural system was compared and demonstrated, and the performance-based seismic design method was adopted. Multiple softwares were used to check in the calculation and analysis. The envelope design was conducted on the calculation results according to the multiple models, and detailed structural strengthening measures were proposed. The vertical seismic action, construction simulation, progressive collapse prevention and key nodes of the suspended structure were analyzed in detail. The elastic-plastic analysis of the whole structure under the rare earthquake was carried out by using ABAQUS software, and the reinforcement design was carried out for the parts with serious damages. The foundation adopted the integral beam raft foundation to effectively control the differential settlement of each part of the suspended structure. The results show that the structure is safe and the design is reasonable.

Keywords:suspended structure; performance design; construction simulation; prevention of progressive collapse

作者简介：刘长东，学士，工程师, Email:liuchangdong@biad.com.cn。