［摘要］太原博物馆主楼为弱连体结构，结构形式采用钢框架与钢筋混凝土剪力墙的混合结构，其特点为扭转不规则、凹凸不规则、楼板不连续等，属于超限工程。采用基于性能的设计方法，确定了重点部位的性能目标，抗震加强措施采取设置楼面水平支撑和加强墙体约束边缘构件等方法。针对弱连体结构，对整体结构进行非线性时程分析，结果表明弱连接连廊对主楼影响较小，可以采用单塔的反应谱分析结果作为主要构件的设计依据。针对薄弱部位，要求独立承担本区域的多遇地震作用。同时进行了静力弹塑性推覆分析、竖向地震分析、斜柱引起的钢梁轴力以及钢梁与剪力墙的连接节点分析。结果表明在各种地震水平下结构和构件能够满足预定的性能目标。
［关键词］连体结构；基于性能的抗震设计；静力弹塑性推覆分析；隔震支座
中图分类号：TU318.82文献标识码：A文章编号：1002-848X(2011)09-0028-06
Analysis and design on the connected structure of Taiyuan Museum
Zhu Ming, Wang Chunlei, Zhang Xu(Beijing Institute of Architectural Design, Beijing 100045, China)
Abstract:Taiyuan Museum is a weakly connected structure, with a structural system of steel frame and reinforced concrete shear wall. It has the characteristics of torsion irregularity, uneven irregularity and discontinuity of floor, etc., thus it is a structure beyond limits of China codes. Performance-based design was applied and performance objectives were made according to important parts of the structure. Measures are taken including setting horizontal braces of floor and reinforcing the restrained boundary elements of shear walls. According to the weakly connected structure, nonlinear time-history analysis is applied for the whole structure, which shows that the weak connection has little influence on the main structure, and results of response spectrum analysis for single tower can be used for design of most members. Structure of local weak area is required to bear the seismic action of frequently occurred earthquakes independently. Pushover analysis, analysis of vertical earthquakes, analysis of axial force in steel beam caused by inclined columns and analysis of connecting joint between steel beam and shear wall are also carried out. The results show that the structure and its members can realize the pre-defined performance objectives under earthquake of various levels.
Keywords:connected structure; performance-based design; pushover analysis; isolation bearings
作者简介：朱鸣，硕士，高级工程师，Email:bj610@163.com。
参考文献
［1］北京市建筑设计研究院. 太原博物馆超限建筑工程抗震设防专项审查报告［R］.北京，2010.
［2］JGJ3—2002高层建筑混凝土结构技术规程［S］． 北京：中国建筑工业出版社，2002.
［3］北京金土木软件技术有限公司. ETABS中文版使用指南 ［M］． 北京：中国建筑工业出版社，2004.
［4］北京金土木软件技术有限公司. CSI分析参考手册（适用于SAP2000，ETABS，SAFE） ［M］．2007.
［5］FEDERAL EMERGENCY MANAGEMENT AGENCY. Nehrp guidelines for the seismic rehabilitation of buildings (FEMA 273) ［S］．1997.
［6］APPLIED TECHNOLOGY COUNCIL. Seismic evaluation and retrofit of concrete buildings Volume 1 (ATC 40) ［S］．1996.
［7］北京迈达斯技术有限公司. MIDAS/GEN分析与设计原理 ［M］． 2010.