鋼管混凝土T,L形柱在反復(fù)荷載作用下的抗震性能分析研究
李學(xué)平1,呂西林2
- 摘 要
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(1 同濟(jì)大學(xué)建筑設(shè)計(jì)研究院;2 同濟(jì)大學(xué)土木工程防災(zāi)國(guó)家重點(diǎn)實(shí)驗(yàn)室,上海 200092)[摘要]在現(xiàn)有T,L形鋼管混凝土柱試驗(yàn)研究基礎(chǔ)上,針對(duì)T,L形鋼管混凝土柱的受壓約束承載機(jī)理,提出了內(nèi)填混凝土的等效單軸本構(gòu)模型,建立了懸臂柱在反復(fù)荷載作用下的滯回全過(guò)程分析模型,編制了T,L形鋼管混凝土柱的滯回全過(guò)程分析程序,將全過(guò)程滯回?cái)?shù)值分析結(jié)果與試驗(yàn)結(jié)果進(jìn)行了對(duì)比,驗(yàn)證了模型和分析程序的正確性。對(duì)T,L形鋼管混凝土柱中有代表性混凝土和鋼單元應(yīng)力應(yīng)變發(fā)展全過(guò)程進(jìn)行了數(shù)值模擬,結(jié)果表明模型能用于T形、L形鋼管混凝土結(jié)構(gòu)的非線性分析。[關(guān)鍵詞]T,L形鋼管混凝土柱;?本構(gòu)關(guān)系;?全過(guò)程分析;?試驗(yàn)驗(yàn)證Seismic Analysis and Experimental Verification for Modelling of ConcretefilledSteel Tubular Columns with L or T SectionsLi Xueping1,Lü Xilin2(1 Architectural Design and Research Institute,Tongji University,Shanghai 200092,China;2 State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)Abstract:Concrete filled steel tubular columns with L or T sections are analyzed. According to the confining mechanism,the stress-strain constitutive model is put forward,and calculated results are compared with experimental records. The hysteretic rules for the in-filled concrete were constructed aiming at the analysis on the seismic behavior of composite members. The simulation analysis is performed by programming it in Fortran code. The models can be applied in the program of time history analysis on tall buildings with concrete-filled steel tubular columns with L or T sections.Keywords:composite column; constitutive model; seismic behavior analysis; experimental verification作者簡(jiǎn)介:李學(xué)平(1971-),博士,一級(jí)注冊(cè)結(jié)構(gòu)工程師,zzlxp@tjadri.com參考文獻(xiàn)[1]王丹,呂西林. T形,L形鋼管混凝土柱抗震性能試驗(yàn)研究[J]. 建筑結(jié)構(gòu)學(xué)報(bào),26(4):39-44.
[2]陳之毅. 矩形鋼管混凝土結(jié)構(gòu)施工工藝及異形柱承載力的研究[D].上海:同濟(jì)大學(xué),2003.
[3]李學(xué)平,呂西林,郭少春. 反復(fù)荷載下矩形鋼管混凝土柱的抗震性能:Ⅱ分析研究[J]. 地震工程與工程振動(dòng),2005,25(5),104-111.
[4]呂西林,金國(guó)芳,吳曉涵. 鋼筋混凝土結(jié)構(gòu)非線性有限元理論與應(yīng)用[M]. 上海:同濟(jì)大學(xué)出版社,1997.
[5]VARMA A H,RICLES J M,SAUSE R,LU L W. Experimental behavior of high strength square concrete-filled steel tube beam-columns[J]. Journal of Structural Engineering,ASCE,2002,128(3):309-318.
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