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北京鲜活农产品项目消能减震设计
于森林,张盟,李博宇,王然,束伟农
摘 要

(北京市建筑设计研究院有限公司, 北京 100045)

[摘要]北京鲜活农产品项目为北京市重点项目,通过结构方案的优选,采用了混凝土框架结构体系+屈曲约束支撑及剪切型阻尼器结构形式。采用性能化设计,对结构进行了小震、中震分析,并采用MIDAS/Gen程序进行了罕遇地震作用下的弹塑性动力分析。计算分析结果表明,屈曲约束支撑及剪切型阻尼器的引入能有效降低结构的地震反应,很好地起到了第一道防线的作用。屈曲约束支撑及剪切型阻尼器的屈服先于主体结构屈服,从而耗散了地震能量,保护了主体框架结构,很好地起到了结构耗能“保险丝”的作用。

[关键词]屈曲约束支撑; 剪切型阻尼器; 性能化设计; 混凝土框架结构; 弹塑性动力分析

中图分类号:TU352-1文献标识码:A文章编号:1002-848X(2017)08-0064-05

 

Energy-dissipated design of Beijing Fresh Agricultural Products Project

Yu Senlin, Zhang Meng, Li Boyu, Wang Ran, Shu Weinong

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

Abstract:Beijing Fresh Agricultural Products Project is the key project of Beijing City. Through the optimization of the structural schemes, it adopts the concrete frame structural system with buckling restrained braces and shear-typed dampers. Based on the performance-based design, the structure was analyzed under frequent and fortification earthquakes, and MIDAS/Gen program was used to carry out the elastic-plastic dynamic analysis under the rare earthquake. The calculation and analysis results show that the introduction of  buckling restrained braces and  shear-typed dampers can effectively reduce the seismic response of the structure, and can effectively play the role of the first line of seismic resistance. Buckling restrained braces and  shear-typed dampers yield before the main body structure, which dissipates the seismic energy and protects the main frame structure. Buckling restrained braces and  shear-typed dampers play a good role of “fuse”in the structure energy dissipation.

Keywords:buckling restrained brace; shear-typed damper; performance-based design; concrete frame structure; elastic-plastic dynamic analysis

 

作者简介:于森林,本科,工程师,一级注册结构工程师,Email:pingglong111@126.com。

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