空腹式型钢混凝土异形柱中框架拟静力试验及有限元分析
|
摘要
通过1榀缩尺比为1/2.5的两跨三层的空腹式型钢混凝土(SRC)异形柱中框架在水平反复荷载作用下的试验研究,获得其荷载-位移滞回曲线及最终破坏形态,分析其结构延性、层间位移角及耗能性能。结果表明,空腹式SRC异形柱中框架滞回曲线饱满,弹塑性层间变形能力强,延性及耗能能力良好。基于试验研究结果,采用ABAQUS软件对该结构进行了非线性有限元分析,研究空腹式SRC异形柱框架的承载力、刚度退化以及出铰机制。有限元分析得出的结果与试验实测结果吻合较好;在此基础上对该结构进行参数分析,研究轴压比、混凝土强度、型钢屈服强度、柱肢高肢厚比、梁柱线刚度比以及梁柱屈服弯矩比等参数对其力学性能的影响。结果表明:增大混凝土强度、柱肢高肢厚比、梁柱线刚度比以及梁柱屈服弯矩比,能够提高结构的水平承载力和弹性刚度,但对结构延性的影响不大;随着轴压比和型钢屈服强度的增大,结构弹性刚度均变化不大,但增大轴压比,结构水平承载力和延性均降低,增大型钢屈服强度,能够同时提高结构水平承载力和延性。
Based on the experimental study on a 1/2.5-scaled model of two-bay and three-story middle frame consisting of reinforced concrete beams and lattice steel reinforced concrete(SRC) special-shaped columns under low cyclic reversed loading,the load-displacement hysteretic loops and the final failure mode of the structure were obtained.The ductility,inter-story drift and energy dissipation of the structure were analyzed.The results show that the hysteretic loops are in a plump-shape,the capacity for elastic-plastic inter-story deformation is high,and the ductility and energy dissipation of the structure are good.Based on the previous experimental study,nonlinear finite element models were used to analyze the mechanical properties of the structure using ABAQUS.The load-displacement curves,stiffness degradation and subsequence of plastic hinges were investigated.The finite element analysis results agree with the experiments.Parametric analysis of the structure was carried out based on the theoretical analysis.The axial compression ratio,concrete strength,yield strength of steel,limb height-thickness ratio,stiffness ratio of beam to column and yield bending moment of beam to column were all considered as analysis parameters.The results show that: with the increment of the concrete strength,limb height-thickness ratio,stiffness ratio of beam to column and yield bending moment of beam to column,the horizontal load-bearing capacity and the elastic stiffness of the structure are improved,but there is no significant effect on the ductility.With the increment of the axial compression ratio and the yield strength of steel,there is no obvious change in the elastic stiffness of the structure,but the horizontal load-bearing capacity and the ductility of the structure decreased with the increment of the axial compression ratio;with the increment of the yield strength of steel,the horizontal load-bearing capacity and the ductility of the structure are improved.
Based on the experimental study on a 1/2.5-scaled model of two-bay and three-story middle frame consisting of reinforced concrete beams and lattice steel reinforced concrete(SRC) special-shaped columns under low cyclic reversed loading,the load-displacement hysteretic loops and the final failure mode of the structure were obtained.The ductility,inter-story drift and energy dissipation of the structure were analyzed.The results show that the hysteretic loops are in a plump-shape,the capacity for elastic-plastic inter-story deformation is high,and the ductility and energy dissipation of the structure are good.Based on the previous experimental study,nonlinear finite element models were used to analyze the mechanical properties of the structure using ABAQUS.The load-displacement curves,stiffness degradation and subsequence of plastic hinges were investigated.The finite element analysis results agree with the experiments.Parametric analysis of the structure was carried out based on the theoretical analysis.The axial compression ratio,concrete strength,yield strength of steel,limb height-thickness ratio,stiffness ratio of beam to column and yield bending moment of beam to column were all considered as analysis parameters.The results show that: with the increment of the concrete strength,limb height-thickness ratio,stiffness ratio of beam to column and yield bending moment of beam to column,the horizontal load-bearing capacity and the elastic stiffness of the structure are improved,but there is no significant effect on the ductility.With the increment of the axial compression ratio and the yield strength of steel,there is no obvious change in the elastic stiffness of the structure,but the horizontal load-bearing capacity and the ductility of the structure decreased with the increment of the axial compression ratio;with the increment of the yield strength of steel,the horizontal load-bearing capacity and the ductility of the structure are improved.
引文
[1]薛建阳,陈宗平,赵鸿铁.型钢混凝土异形柱结构的性能、设计方法及其工程应用[M].北京:中国建筑工业出版社,2011:1-2.(XUE Jianyang,CHENZongping,ZHAO Hongtie.The performance,designingmethod and engineering application of steel reinforcedconcrete special-shaped column structure[M].Beijing:China Architecture&Building Press,2011:1-2.(inChinese))
[2]陈宗平,薛建阳,赵鸿铁,等.型钢混凝土异形柱抗震性能试验研究[J].建筑结构学报,2007,28(3):53-61.(CHEN Zongping,XUE Jianyang,ZHAOHongtie,et al.Experimental research on seismicbehavior of steel reinforced concrete special-shapedcolumns[J].Journal of Building Structures,2007,28(3):53-61.(in Chinese))
[3]曹万林,樊太,张维斌,等.异形截面钢骨混凝土柱抗震性能试验研究[J].世界地震工程,2004,20(2):64-69.(CAO Wanlin,FAN Tai,ZHANGWeibin,et al.Experimental research on seismicbehavior of special shaped SRC columns[J].WorldEarthquake Engineering,2004,20(2):64-69.(inChinese))
[4]薛建阳,刘义,赵鸿铁,等.型钢混凝土异形柱框架节点抗震性能试验研究[J].建筑结构学报,2009,30(4):69-77.(XUE Jianyang,LIU Yi,ZHAOHongtie,et al.Experimental study on seismic behaviorof steel reinforced concrete special-shaped column-beamjoints[J].Journal of Building Structures,2009,30(4):69-77.(in Chinese))
[5]向平.钢骨混凝土异形柱钢筋混凝土梁节点低周反复荷载试验研究[D].南宁:广西大学,2006:31-40.(XIANG Ping.Experimental research on joints of steelreinforced concrete special-shaped column andreinforced concrete beam under double-direction low-cyclic reversed loading[D].Nanning:Guang XiUniversity,2006:31-40.(in Chinese))
[6]杨涛,张喜德.T形截面钢骨混凝土异形柱框架抗震性能[J].土木建筑与环境工程,2009,31(2):33-37.(YANG Tao,ZHANG Xide.Research on seismicbehavior of frame with T-shaped SRC columns[J].Journal of Civil,Architectural and EnvironmentalEngineering,2009,31(2):33-37.(in Chinese))
[7]薛建阳,刘祖强,葛鸿鹏,等.实腹式型钢混凝土异形柱中框架抗震性能试验研究[J].建筑结构学报,2011,32(11):82-88.(XUE Jianyang,LIU Zuqiang,GE Hongpeng,et al.Seismic behavior of solid steelreinforced concrete middle frame with special-shapedcolumns[J].Journal of Building Structures,2011,32(11):82-88.(in Chinese))
[8]刘祖强,薛建阳,倪茂明,等.实腹式型钢混凝土异形柱边框架拟静力试验及有限元分析[J].建筑结构学报,2012,33(8):23-30.(LIU Zuqiang,XUEJianyang,NI Maoming,et al.Quasi-static test andfinite element analysis on solid-web steel reinforcedconcrete exterior frame with special-shaped columns[J].Journal of Building Structures,2012,33(8):23-30.(in Chinese))
[9]姚谦峰,陈平.土木工程结构试验[M].北京:中国建筑工业出版社,2001:219-220.(YAO Qianfeng,CHEN Ping.Civil engineering structural experiment[M].Beijing:China Architecture&Building Press,2001:219-220.(in Chinese))
[10]王铁成,张学辉,赵海龙.纤维增强混凝土异形柱框架抗震性能的试验研究[J].地震工程与工程振动,2008,28(6):178-185.(WANG Tiecheng,ZHANGXuehui,ZHAO Hailong.Experimental study on seismicbehavior of RC frames with specially shaped columnsreinforced by fiber[J].Journal of EarthquakeEngineering and Engineering Vibration,2008,28(6):178-185.(in Chinese))
[11]庄茁,由小川,廖剑晖,等.基于ABAQUS的有限元分析和应用[M].北京:清华大学出版社,2009:114.(ZHUANG Zhuo,YOU Xiaochuan,LIAO Jianhui,et al.Finite element analysis and application based onABAQUS[M].Beijing:Tsinghua University Press,2009:114.(in Chinese))
[12]陈宗平.型钢混凝土异形柱的基本力学行为及抗震性能研究[D].西安:西安建筑科技大学,2009:177-181.(CHEN Zongping.Study on basic mechanicalbehavior and seismic performance of steel reinforcedconcrete special-shaped columns[D].Xi’an:Xi’anUniversity of Architecture and Technology,2009:177-181.(in Chinese))
[13]钟善桐.钢管混凝土结构[M].3版.北京:清华大学出版社,2003:212-213.(ZHONG Shantong.Concrete-filled steel tubular structures[M].3rd ed.Beijing:Tsinghua University Press,2003:212-213.(in Chinese))
[2]陈宗平,薛建阳,赵鸿铁,等.型钢混凝土异形柱抗震性能试验研究[J].建筑结构学报,2007,28(3):53-61.(CHEN Zongping,XUE Jianyang,ZHAOHongtie,et al.Experimental research on seismicbehavior of steel reinforced concrete special-shapedcolumns[J].Journal of Building Structures,2007,28(3):53-61.(in Chinese))
[3]曹万林,樊太,张维斌,等.异形截面钢骨混凝土柱抗震性能试验研究[J].世界地震工程,2004,20(2):64-69.(CAO Wanlin,FAN Tai,ZHANGWeibin,et al.Experimental research on seismicbehavior of special shaped SRC columns[J].WorldEarthquake Engineering,2004,20(2):64-69.(inChinese))
[4]薛建阳,刘义,赵鸿铁,等.型钢混凝土异形柱框架节点抗震性能试验研究[J].建筑结构学报,2009,30(4):69-77.(XUE Jianyang,LIU Yi,ZHAOHongtie,et al.Experimental study on seismic behaviorof steel reinforced concrete special-shaped column-beamjoints[J].Journal of Building Structures,2009,30(4):69-77.(in Chinese))
[5]向平.钢骨混凝土异形柱钢筋混凝土梁节点低周反复荷载试验研究[D].南宁:广西大学,2006:31-40.(XIANG Ping.Experimental research on joints of steelreinforced concrete special-shaped column andreinforced concrete beam under double-direction low-cyclic reversed loading[D].Nanning:Guang XiUniversity,2006:31-40.(in Chinese))
[6]杨涛,张喜德.T形截面钢骨混凝土异形柱框架抗震性能[J].土木建筑与环境工程,2009,31(2):33-37.(YANG Tao,ZHANG Xide.Research on seismicbehavior of frame with T-shaped SRC columns[J].Journal of Civil,Architectural and EnvironmentalEngineering,2009,31(2):33-37.(in Chinese))
[7]薛建阳,刘祖强,葛鸿鹏,等.实腹式型钢混凝土异形柱中框架抗震性能试验研究[J].建筑结构学报,2011,32(11):82-88.(XUE Jianyang,LIU Zuqiang,GE Hongpeng,et al.Seismic behavior of solid steelreinforced concrete middle frame with special-shapedcolumns[J].Journal of Building Structures,2011,32(11):82-88.(in Chinese))
[8]刘祖强,薛建阳,倪茂明,等.实腹式型钢混凝土异形柱边框架拟静力试验及有限元分析[J].建筑结构学报,2012,33(8):23-30.(LIU Zuqiang,XUEJianyang,NI Maoming,et al.Quasi-static test andfinite element analysis on solid-web steel reinforcedconcrete exterior frame with special-shaped columns[J].Journal of Building Structures,2012,33(8):23-30.(in Chinese))
[9]姚谦峰,陈平.土木工程结构试验[M].北京:中国建筑工业出版社,2001:219-220.(YAO Qianfeng,CHEN Ping.Civil engineering structural experiment[M].Beijing:China Architecture&Building Press,2001:219-220.(in Chinese))
[10]王铁成,张学辉,赵海龙.纤维增强混凝土异形柱框架抗震性能的试验研究[J].地震工程与工程振动,2008,28(6):178-185.(WANG Tiecheng,ZHANGXuehui,ZHAO Hailong.Experimental study on seismicbehavior of RC frames with specially shaped columnsreinforced by fiber[J].Journal of EarthquakeEngineering and Engineering Vibration,2008,28(6):178-185.(in Chinese))
[11]庄茁,由小川,廖剑晖,等.基于ABAQUS的有限元分析和应用[M].北京:清华大学出版社,2009:114.(ZHUANG Zhuo,YOU Xiaochuan,LIAO Jianhui,et al.Finite element analysis and application based onABAQUS[M].Beijing:Tsinghua University Press,2009:114.(in Chinese))
[12]陈宗平.型钢混凝土异形柱的基本力学行为及抗震性能研究[D].西安:西安建筑科技大学,2009:177-181.(CHEN Zongping.Study on basic mechanicalbehavior and seismic performance of steel reinforcedconcrete special-shaped columns[D].Xi’an:Xi’anUniversity of Architecture and Technology,2009:177-181.(in Chinese))
[13]钟善桐.钢管混凝土结构[M].3版.北京:清华大学出版社,2003:212-213.(ZHONG Shantong.Concrete-filled steel tubular structures[M].3rd ed.Beijing:Tsinghua University Press,2003:212-213.(in Chinese))
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心