鋼筋混凝土框架結(jié)構(gòu)輕鋼加層中柱連接節(jié)點(diǎn)試驗(yàn)研究
陳道政，何池和，謝冰花
- 摘 要
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(合肥工業(yè)大學(xué)土木與水利工程學(xué)院， 合肥 230009)［摘要］ 在輕鋼加層中，新鋼柱與原混凝土柱之間的連接能否滿足設(shè)計(jì)要求是其成功的關(guān)鍵。以實(shí)際工程為例，結(jié)合外包柱腳的構(gòu)造形式，提出了先在原柱頂面增加滿足柱腳錨栓錨固高度的混凝土柱，再在其上固定鋼柱并設(shè)置鋼柱外包鋼筋混凝土柱的方法。結(jié)合有限元軟件及試驗(yàn)分析了該柱腳連接節(jié)點(diǎn)與鋼柱直接加層柱腳連接節(jié)點(diǎn)在循環(huán)荷載下的失效模式及耗能特性。結(jié)果表明，所設(shè)計(jì)的柱腳具有良好的承載能力和耗能能力，該柱腳的試驗(yàn)值與理論分析基本一致，再次證明了該柱腳的可靠性。［關(guān)鍵詞］輕鋼加層; 連接節(jié)點(diǎn); 有限元分析; 耗能能力; 滯回曲線中圖分類號(hào)：TU317.1 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2014)23-0085-04Experimental study on middle-column connecting nodes of light-steel adding-story in reinforced concrete frame structureChen Daozheng, He Chihe, Xie Binghua（College of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China）Abstract: If the connection between new steel column and original concrete column could meet the design requirements or not is the key to success of light-steel adding-story project. Based on an actual project, combined with the form of encased column base, a method is proposed as adding a concrete column on original column top to meet the height requirement of column foot anchoring bolt and then fixing the steel column on new concrete column with set of encased reinforced concrete. Analyses of failure mode and energy dissipation capacity under cyclic loading were carried out on connecting node of proposed column base and connecting node of steel column directly set on the concrete column respectively by finite element program and experiment. The results show that proposed column base has well bearing capacity and energy dissipation capacity. The experiment results of proposed column base are basically consistent with theoretical analysis, which proves the reliability of the proposed column base again.Keywords: light-steel adding-story; connecting node; finite element analysis; energy dissipation capacity; hysteretic loop作者簡(jiǎn)介：陳道政，博士，教授，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email:cdztai@163.com。參考文獻(xiàn)［1］陳道政, 李愛(ài)群. 樓頂鋼結(jié)構(gòu)塔樓的抗震分析及設(shè)計(jì)建議［J］. 建筑結(jié)構(gòu), 2004, 34(5): 33-35.［2］麻建鎖,張濤.鋼筋混凝土框架頂部鋼結(jié)構(gòu)加層的抗震性能分析［J］.地震工程與工程振動(dòng),2006,26(3):118-120.［3］駱甜.輕鋼加層結(jié)構(gòu)的地震反應(yīng)分析及研究［D］.合肥:合肥工業(yè)大學(xué),2007.［4］張濤,王元清,石永久.多層建筑頂部輕鋼加層柱腳節(jié)點(diǎn)的設(shè)計(jì)與構(gòu)造［J］.施工技術(shù),2005,34 (10):36-38.［5］陳道政,高鵬,謝冰花.一種多層混凝土框架結(jié)構(gòu)頂部的加層鋼框架柱腳節(jié)點(diǎn)及其施工方法:中國(guó), 201310753370［P］.2014-03-26.［6］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.［7］莊茁.ABAQUS非線性有限元分析與實(shí)例［M］.北京:科學(xué)出版社,2005.［8］楊刻亞,楊春梅,吳慶文.GFRP管混凝土圓形管柱抗震性能試驗(yàn)研究［J］.長(zhǎng)春工程學(xué)院學(xué)報(bào)：自然科學(xué)版, 2008,9(2):18-20.［9］周起敬,姜維山,潘泰華.鋼與混凝土組合結(jié)構(gòu)設(shè)計(jì)施工手冊(cè)［M］.北京:中國(guó)建筑工業(yè)出版社,1991.
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