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  李英民¹，劉建偉²，周自強(qiáng)³

  （1 重慶大學(xué)土木工程學(xué)院，重慶 400045； 2 重慶兩江新區(qū)管委會建設(shè)管理局，重慶 401147；3 江西省建筑設(shè)計研究總院，南昌 330046）

 

［摘要］對于抗震構(gòu)造措施不滿足現(xiàn)行規(guī)范的既有鋼筋混凝土結(jié)構(gòu)，采用傳統(tǒng)方法加固不便于工程實(shí)施。以某醫(yī)療建筑為例，介紹了基于性能的抗震加固設(shè)計思路及采取消能減震技術(shù)提高抗震性能的方法。主要針對結(jié)構(gòu)設(shè)防目標(biāo)和設(shè)計原則、阻尼器合理布置方案及減震效果等問題進(jìn)行了探討。研究認(rèn)為：提出的抗震加固設(shè)計方法更為經(jīng)濟(jì)合理，消能減震結(jié)構(gòu)的抗震性能明顯提高時，抗震構(gòu)造要求可適當(dāng)降低；合理布置阻尼器不僅可以降低水平剪力、層間變形，還可以控制結(jié)構(gòu)的扭轉(zhuǎn)反應(yīng)。

［關(guān)鍵詞］粘滯阻尼器；抗震加固；消能減震；基于性能

中圖分類號：TU352.02文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2012)07-0088-05

 

Li Yingmin¹, Liu Jianwei², Zhou Ziqiang³

(1 College of Civil Engineering, Chongqing University, Chongqing 400045, China；2 Bureau of Construction Administration of Chongqing Liangjiang New Area, Chongqing 401147, China；3 Jiangxi Province Architecture Design and Research Central Institute, Nanchang 330046, China)

 

Abstract: It is inconvenient for RC structures of which seismic measures are incomplete to be seismically retrofitted using traditional techniques. A medical building was taken as an example to illustrate the idea of performance-based seismic retrofit. The idea made use of nonlinear viscous damper to improve seismic behavior of structure. The problems including arrangement of viscous damper, reduction of seismic behavior and so on were chiefly discussed. The results show that performance-based seismic retrofit idea is economical and appropriate for structures whose seismic measures are incomplete. Seismic measures of such structures could reduce compatibly while seismic behavior improved obviously. Optimized arrangement of viscous dampers could not only decrease seismic shear and interstory drift, but also reduce torsional response of structures.

Keywords: viscous damper; seismic retrofit; energy dissipation; performance-based

*教育部新世紀(jì)優(yōu)秀人才支持計劃(NCET-06-0765),重慶市科技攻關(guān)項(xiàng)目(2011GGB127),重慶市建設(shè)科技項(xiàng)目(城科字2009第3號)。

作者簡介：李英民，博士，教授，Email：liyingmin@cqu.edu.cn。

 

［1］GB 50011—2001建筑抗震設(shè)計規(guī)范［S］. 2008年版. 北京: 中國建筑工業(yè)出版社，2008.

［2］GB 50223—2008建筑工程抗震設(shè)防分類標(biāo)準(zhǔn)［S］. 北京：中國建筑工業(yè)出版社，2008.

［3］GB 50023—2009建筑抗震鑒定標(biāo)準(zhǔn)［S］. 北京：中國建筑工業(yè)出版社，2009.

［4］KIM J K, CHOI H. Displacement-based design of supplemental dampers for seismic retrofit of a framed structure ［J］. Journal of Structural Engineering, 2006, 132(6): 873-973.

［5］蔣建，呂西林，翁大根. 附加黏滯阻尼器減震結(jié)構(gòu)基于性能的抗震設(shè)計方法［J］. 力學(xué)季刊，2009, 30（4）：577-586.

［6］周云. 粘滯阻尼減震結(jié)構(gòu)設(shè)計［M］. 武漢：武漢理工大學(xué)出版社，2006.