底部帶轉(zhuǎn)換桁架的鋼框架結(jié)構(gòu)設(shè)計(jì)與分析*
劉承亮，范圣剛，劉飛，尚春芳
- 摘 要
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劉承亮，范圣剛，劉飛，尚春芳（東南大學(xué)土木工程學(xué)院， 南京 210096）［摘要］轉(zhuǎn)換桁架是轉(zhuǎn)換結(jié)構(gòu)中常采用的一種結(jié)構(gòu)形式，也是結(jié)構(gòu)受力的關(guān)鍵部位。結(jié)合工程實(shí)際介紹了底部帶轉(zhuǎn)換桁架的鋼框架結(jié)構(gòu)的受力性能與設(shè)計(jì)方法。基于靜力彈塑性方法對(duì)結(jié)構(gòu)進(jìn)行抗震性能化分析，給出了結(jié)構(gòu)的能力譜和需求譜，分析了結(jié)構(gòu)的出鉸機(jī)理，得出了結(jié)構(gòu)在性能點(diǎn)處的彈塑性層間位移角。針對(duì)底層V形分叉柱柱腳鑄鋼節(jié)點(diǎn)進(jìn)行了有限元分析，以確保關(guān)鍵節(jié)點(diǎn)具有足夠的承載力?；谏鲜鼋Y(jié)構(gòu)分析結(jié)果，給出了背景工程的結(jié)構(gòu)安全評(píng)定及設(shè)計(jì)建議。［關(guān)鍵詞］轉(zhuǎn)換桁架; 結(jié)構(gòu)設(shè)計(jì); 靜力彈塑性分析; 抗震性能; 節(jié)點(diǎn)分析中圖分類號(hào)：TU393 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2013)19-0069-05Design and analysis of steel frame structure with transfer trussLiu Chengliang, Fan Shenggang, Liu Fei, Shang Chunfang(School of Civil Engineering, Southeast University, Nanjing 210096, China)Abstract: Transfer truss is often used in transfer structures and it is also the key position of the structure. Mechanical behavior and design methods of the steel frame structure with a transfer truss based on a relevant project were introduced. Seismic performance design was conducted based on the Pushover analysis, and the capacity spectrum and demand spectrum were given. At the same time, the appearance pattern of yield hinges was analyzed and the elastic-plastic inter-story drift angle of the structure at the performance point was given. The cast steel joints at the bottom of the V-shaped bifurcate columns were analyzed by the finite element method to ensure the sufficient bearing capacity. Based on the results of structure analysis, safety assessment and design suggestion of the relevant project were given.Keywords: transfer truss; structure design; Pushover analysis; seismic behavior; node analysis*江蘇省產(chǎn)學(xué)研前瞻性聯(lián)合研究項(xiàng)目（BY2012200）。通訊作者：范圣剛，博士，副教授，Email:101010393@seu.edu.cn。參考文獻(xiàn)［1］GB 50009—2012 建筑結(jié)構(gòu)荷載規(guī)范［S］. 北京：中國(guó)建筑工業(yè)出版社，2012.［2］GB 50011—2010 建筑抗震設(shè)計(jì)規(guī)范［S］. 北京：中國(guó)建筑工業(yè)出版社，2010.［3］GB 50017—2003 鋼結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］. 北京：中國(guó)計(jì)劃出版社，2003.［4］魏璉，王森，王志遠(yuǎn)，等. 靜力彈塑性分析方法的修正及在抗震設(shè)計(jì)中的應(yīng)用［J］. 建筑結(jié)構(gòu)，2006，36(1):97-102.［5］ATC-40 Seismic evaluation and retrofit of concrete building［S］. Redwood City: Applied Technology Council：1996.［6］FEMA-273 NEHRP guidelines for the seismic rehabilitation of buildings［S］.Washington,D.C., 1997.［7］JGJ 99—98 高層民用建筑鋼結(jié)構(gòu)技術(shù)規(guī)程［S］. 北京：中國(guó)建筑工業(yè)出版社，1998.［8］GB/T 14408—93 一般工程與結(jié)構(gòu)用低合金鑄鋼件［S］. 北京：中國(guó)標(biāo)準(zhǔn)出版社，1993.
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