四肢圆钢管混凝土格构柱恢复力模型研究.pdf

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1、第３３卷第３期建筑科学与工程学报Vol．３３No．３２０１６年５月JournalofArchitectureandCivilEngineeringMay２０１６文章编号：１６７３‐２０４９（２０１６）０３‐００４２‐０８四肢圆钢管混凝土格构柱恢复力模型研究１１１２１１陈伯望，邹艳花，唐楚，罗瑶，李频，党晓冰（１．中南林业科技大学土木工程与力学学院，湖南长沙４１０００４；２．中南大学土木工程学院，湖南长沙４１００７５）摘要：为了探究钢管混凝土格构柱的弹塑性地震反应以便进行构件非线性理论分析，对２根四肢圆钢管混凝土格构

2、柱进行了低周反复加载试验，并收集了１２根四肢圆钢管混凝土格构柱低周反复荷载作用下的试验资料。通过理论分析及试验结果回归分析，提出了钢管混凝土格构柱的退化三折线恢复力模型，确立了构件轴压比、等效长细比及材料比例系数等主要参数与模型之间的关系，并将模型计算结果与试验结果进行了对比分析。结果表明：计算结果和试验结果吻合较好，且该恢复力模型计算方法简单，便于进行结构地震反应分析及工程应用。关键词：钢管混凝土格构柱；恢复力模型；轴压比；等效长细比；材料比例系数；骨架曲线；滞回规则中图分类号：TU３１２文献标志码：AStudy

3、onResilienceModelsofCircularFour‐tubeConcrete‐filledSteelTubularLacedColumns１１１２１１CHENBo‐wang，ZOUYan‐hua，TANGChu，LUOYao，LIPin，DANGXiao‐bing（１．CollegeofCivilEngineeringandMechanics，CentralSouthUniversityofForestryandTechnology，Changsha４１０００４，Hunan，China；２．Schoo

4、lofCivilEngineering，CentralSouthUniversity，Changsha４１００７５，Hunan，China）Abstract：Inordertoexploreelastic‐plasticseismicresponsewiththeaimofcomponentnonlineartheoreticalanalysisofconcrete‐filledsteeltubularlacedcolumn，twocircularfour‐tubeconcrete‐filledsteeltubul

5、arlacedcolumnsweretestedunderlowcyclicload，andtheexperimentalresultsoftwelvecircularfour‐tubeconcrete‐filledsteeltubularlacedcolumnsunderlowcyclicloadwerecollected．Thedegenerationthree‐lineresiliencemodelsofconcrete‐filledsteeltubularlacedcolumnwasproposedthro

6、ughtheoryanalysisandregressionanalysisoftestresults．Therelationshipsbetweenthemodelandthemainparameters，suchasaxialcompressionratio，equivalentslendernessratio，materialproportioncoefficient，wereestablished．Comparativeanalysisofthecalculationresultsofmodelandthe

7、experimentalcurveswascarriedout．Theresultshowthatcalculationresultsagreewellwithexperimentalresults，andthecalculationmethodofresiliencemodelissimple．Theresiliencemodelproposedcanbeconvenientlyappliedinstructureseismicresponseanalysisandengineeringapplication．K

8、eywords：concrete‐filledsteeltubularlacedcolumn；resiliencemodel；axialcompressionratio；equivalentslendernessratio；materialproportioncoefficient；skeletoncurve；hystereticrule收稿日期：２０１５‐