- 摘 要
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［摘要］太原博物館主樓為弱連體結(jié)構(gòu)，結(jié)構(gòu)形式采用鋼框架與鋼筋混凝土剪力墻的混合結(jié)構(gòu)，其特點為扭轉(zhuǎn)不規(guī)則、凹凸不規(guī)則、樓板不連續(xù)等，屬于超限工程。采用基于性能的設計方法，確定了重點部位的性能目標，抗震加強措施采取設置樓面水平支撐和加強墻體約束邊緣構(gòu)件等方法。針對弱連體結(jié)構(gòu)，對整體結(jié)構(gòu)進行非線性時程分析，結(jié)果表明弱連接連廊對主樓影響較小，可以采用單塔的反應譜分析結(jié)果作為主要構(gòu)件的設計依據(jù)。針對薄弱部位，要求獨立承擔本區(qū)域的多遇地震作用。同時進行了靜力彈塑性推覆分析、豎向地震分析、斜柱引起的鋼梁軸力以及鋼梁與剪力墻的連接節(jié)點分析。結(jié)果表明在各種地震水平下結(jié)構(gòu)和構(gòu)件能夠滿足預定的性能目標。
［關(guān)鍵詞］連體結(jié)構(gòu)；基于性能的抗震設計；靜力彈塑性推覆分析；隔震支座
中圖分類號：TU318.82文獻標識碼：A文章編號：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
作者簡介：朱鳴，碩士，高級工程師，Email:bj610@163.com。
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