基于CBC 2007的南加州醫(yī)院結(jié)構(gòu)抗震設(shè)計*
伍云天1,2, 李英民1,2，蔣薇3，肖巖4
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伍云天1,2, 李英民1,2，蔣薇3，肖巖4(1 重慶大學山地城鎮(zhèn)建設(shè)與新技術(shù)教育部重點實驗室，重慶400045；2 重慶大學土木工程學院，重慶 400045；3 中冶賽迪工程技術(shù)股份有限公司，重慶 401122；4 南加州大學土木與環(huán)境工程系，洛杉磯 CA90089）[摘要] 地處美國加利福尼亞州南部地震區(qū)的一幢醫(yī)院結(jié)構(gòu)采用屈曲約束支撐框架作為抗側(cè)力體系。介紹了該工程的結(jié)構(gòu)布置、兩階段分析、平面不規(guī)則驗算與冗余度計算、屈曲約束支撐框架設(shè)計以及樓蓋和基礎(chǔ)設(shè)計等主要分析設(shè)計結(jié)果。據(jù)此，總結(jié)出南加州抗震設(shè)計的基本思路是選取合理的耗能構(gòu)件并保證其發(fā)揮作用，以及構(gòu)建抗側(cè)力體系各結(jié)構(gòu)構(gòu)件間可靠的傳力路徑。有助于我國抗震設(shè)計人員了解南加州抗震設(shè)計實踐的基本思想與特色。[關(guān)鍵詞] 醫(yī)院；屈曲約束支撐框架；抗震設(shè)計；耗能構(gòu)件；傳力路徑中圖分類號：TU391 文獻標識碼：A 文章編號：1002-848X(2012)12-0037-07Seismic design of hospital structure in Southern California based on CBC 2007Wu Yuntian1,2, Li Yingmin1,2, Jiang Wei3, Xiao Yan4(1 Key Lab of Chinese Education Ministry for Construction and New Technology of Mountain Cities, Chongqing University, Chongqing 400045, China; 2 School of Civil Engineering, Chongqing University, Chongqing 400045, China; 3 CISDI Engineering Co., Ltd., Chongqing 401122, China; 4 Department of Civil and Environmental Engineering, University of Southern California, Los Angeles CA90089, USA)Abstract: The lateral force resisting system of a hospital structure located in Southern California consists of buckling restrained braced frames (BRBF). The main aspects of the seismic design of the hospital structure were introduced, including the structural plan, two stage analysis, plan irregularity check and redundancy factor calculation, BRBF design, diaphragm and foundation design. The design philosophy governing the seismic design of overall structural system in Southern California can be reflected in the selection of appropriate energy dissipating structural component and ensuring reliable load transfer path among various structural components of the lateral force resisting system. It can be helpful for understanding seismic design philosophy and characteristics of the well known seismic region of Southern California.Keywords: hospital; buckling restrained braced frame; seismic design; energy dissipating component; load path*國家自然科學基金項目（51108484），重慶市科委自然科學基金計劃項目（CSTC2011BB6092）。作者簡介：伍云天，博士，副教授，美國加利福尼亞州注冊土木工程師，Email:yuntianwcqu@gmail.com.參考文獻［1］ CBC 2007 California building code［S］. Sacramento, California, USA: California Standards Commission, 2007.［2］ IBC 2006 International building code［S］. Washington D.C., USA: International Code Council, 2006.［3］ ASCE 7-05 Minimum design loads for buildings and other structures ［S］. Reston, VA, USA: American Society of Civil Engineers, 2005.［4］ ACI 318-05 Building code requirements for reinforced concrete and commentary ［S］. Farmington Hills, Michigan, USA: American Concrete Institute, 2008.［5］ AISC 360-05 Specification for structural steel buildings ［S］. Chicago, Illinois, USA: American Institute of Steel Construction, 2005.［6］ AISC 341-05 Seismic provisions for structural steel buildings ［S］. Chicago, Illinois, USA: American Institute of Steel Construction, 2005.［7］ GB 50011-2010 建筑抗震設(shè)計規(guī)范［S］. 北京：中國建筑工業(yè)出版社，2010.
