高强型钢混凝土柱抗震性能影响因素研究
|
摘要
通过对已完成试验的7根型钢混凝土柱在低周反复荷载下的受力性能模拟分析,验证OpenSees非线性有限元软件能够对高强钢混凝土柱截面的抗震性能进行分析。采用OpenSees软件建立了考虑型钢和箍筋对混凝土约束作用的有限元分析模型,以剪跨比、轴压比、配箍率和含钢率为参数,对21个高强型钢混凝土压弯滞回试件进行抗震性能影响因素参数分析。结果表明,大剪跨比、低轴压比、高配箍率及高含钢率的高强钢SRC柱试件滞回环更趋于较为饱满的梭形,试件极限变形能力更强:随着剪跨比的提高,试件极限承载力显著下降,延性性能先大幅提高再逐渐降低;随着轴压比的增大,试件极限承载力小幅下降,而延性性能下降显著;随着配箍率和含钢率的提高,试件的极限承载力和延性性能均有所提高,且变化幅度均较小。
Based on the test results of seven high-strength steel reinforced concrete columns(referred to as HSSRC columns)under cycle loading,the OpenSees software is adopted to analyze influencing factors of the seismic performance for HSSRC columns,and verify the numerical model.Considering the concrete confinement exerted by steel,parameter analysis based on 21 finite element(FE)models is conducted to find the impact of shear span ratio,axial load ratio,stirrup ratio and steel ratio on the seismic behavior of HSSRC columns.It shows that the hysteretic loops of columns with bigger shear span ratio,lower axial load ratio,higher stirrup ratio and higher steel ratio tend to be full,and the deformation capacities of them tend to be increased.With the increase of shear span ratio,the bearing capacity drops significantly,and the ductility increases significantly then decreases gradually.With the increase of axial load ratio,the bearing capacity decreases slightly and the ductility decreases significantly.With the increase of stirrup ratio and steel ratio,both the bearing capacity and the deformation capacity improve slightly.
Based on the test results of seven high-strength steel reinforced concrete columns(referred to as HSSRC columns)under cycle loading,the OpenSees software is adopted to analyze influencing factors of the seismic performance for HSSRC columns,and verify the numerical model.Considering the concrete confinement exerted by steel,parameter analysis based on 21 finite element(FE)models is conducted to find the impact of shear span ratio,axial load ratio,stirrup ratio and steel ratio on the seismic behavior of HSSRC columns.It shows that the hysteretic loops of columns with bigger shear span ratio,lower axial load ratio,higher stirrup ratio and higher steel ratio tend to be full,and the deformation capacities of them tend to be increased.With the increase of shear span ratio,the bearing capacity drops significantly,and the ductility increases significantly then decreases gradually.With the increase of axial load ratio,the bearing capacity decreases slightly and the ductility decreases significantly.With the increase of stirrup ratio and steel ratio,both the bearing capacity and the deformation capacity improve slightly.
引文
[1]施刚,班慧勇,石永久,等.高强度钢材钢结构的工程应用及研究进展[J].工业建筑,2012,42(1):1-7,61.DOI:10.13204/j.gyjz2012.01.010.SHI Gang,BAN Huiyong,SHI Yongjiu,et al.Engineering application and recent research progress on high strength steel structures[J].Industrial Construction,2012,42(1):1-7,61.DOI:10.13204/j.gyjz2012.01.010.(in Chinese)
[2] MIKI C.Engineering use and application of high-performance steels for steel structures[M].Zurich:IABSE,2005.
[3] GRAHAM P.High strength steel use in Australia,Japan and the US[J].Structural Engineer,2006,11:27-30.
[4]李正良,刘红军,张东英,等.Q460高强度钢在1000kV杆塔的应用[J].电网技术,2008,32(24):1-5.DOI:10.13335/j.1000-3673.pst.2008.24.012.LI Zhengliang,LIU Hongjun,ZHANG Dongying,et al.Application of high-strength steel Q460 in 1000kV transmission towers[J].Power System Technology,2008,32(24):1-5.DOI:10.13335/j.1000-3673.pst.2008.24.012.(in Chinese)
[5]邱林波,刘毅,侯兆新,等.高强结构钢在建筑中的应用研究现状[J].工业建筑,2014,44(3):1-5,47.DOI:10.13204/j.gyjz201403001.QIU Linbo,LIU Yi,HOU Zhaoxin,et al.State application research of high strength steel in steel structures[J].Industrial Construction,2014,44(3):1-5,47.DOI:10.13204/j.gyjz201403001.(in Chinese)
[6]逄靖华,吴宏磊,邱林波.高强度钢材在郑州绿地中央广场中的应用分析[J].工业建筑,2014,44(3):43-47.DOI:10.13204/j.gyjz201403009.PANG Jinghua,WU Honglei,QIU Linbo.Design application of high strength steel in Greenland Central Plaza in Zhengzhou[J].Industrial Construction,2014,44(3):43-47.DOI:10.13204/j.gyjz201403009.(in Chinese)
[7] MAZZONI S,MCKENNA F,SCOTT M H,et al.Open Sees users manual[R].Berkeley:University of California,Berkeley,2004.
[8]刘祖强.型钢混凝土异形柱框架抗震性能及设计方法研究[D].西安:西安建筑科技大学,2012.LIU Zuqiang.Research on seismic performance and design method of steel reinforced concrete frame with special-shaped columns[D].Xi’an:Xi’an University of Architecture and Technology,2012.(in Chinese)
[9] ELWOOD K J.Shake table tests and analytical studies on the gravity load collapse of RC frames[D].Berkeley:University of California,Berkeley,2002.
[10]高嵩.基于OpenSees的钢筋混凝土非线性有限元分析及试验对比[D].合肥:合肥工业大学,2010.GAO Song.Nonlinear finite element analysis of reinforced concrete based on opensees and experimental comparesion[D].Hefei:Hefei University of Technology,2010.(in Chinese)
[11]朱雁茹,郭子雄.基于OpenSEES的SRC柱低周往复加载数值模拟[J].广西大学学报(自然科学版),2010,35(4):555-559.DOI:10.13624/j.cnki.issn.1001-7445.2010.04.017.ZHU Yanru,GUO Zixiong.Numerical simulation of SRC column under low-cyclic loading based on OpenSEES[J].Journal of Guangxi University(Natural Science Edition),2010,35(4):555-559.DOI:10.13624/j.cnki.issn.1001-7445.2010.04.017.(in Chinese)
[12]杨怡亭.高强型钢混凝土组合柱承载力与抗震性能研究[D].北京:北京科技大学,2016.YANG Yiting.The bearing capacity and seismic performance of high strength steel reinforced concrete column[D].Beijing:University of Science and Technology Beijing,2016.(in Chinese)
[13] KENT D C.Inelastic behavior of reinforced concrete members with cyclic loading[D].Christchurch:University of Canterbury,1969.
[14] SCOTT B D,PARK R,PRIESTLEY M J N.Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates[J].Journal of the American Concrete Institute,1982,79(1):13-27.
[15] PARK R,PRIESTLEY M J N,GILL W D.Ductility of square-confined concrete columns[J].Journal of the Structural Division,1982,108(4):929-950.
[16] MENEGOTTO M,PINTO P E.Method of analysis for cyclically loaded reinforced concrete plane frames including changes in geometry and nonelastic behavior of elements under combined normal force and bending[C]//Proceedings of IABSE Symposiumon Resistance and Ultimate Deformability of Structures.Lisbon,1973:15-22.
[17]陈才华.型钢混凝土压弯试件试验研究及数值计算[D].北京:中国建筑科学研究院,2007.CHEN Caihua.Experimental study and numerical analysis on steel reinforced concrete compression-bending members[D].Beijing:China Academy of Building Research,2007.(in Chinese)
[18]殷小溦,吕西林,卢文胜.大比尺高含钢率型钢混凝土柱滞回性能试验[J].土木工程学报,2012,45(12):91-98.DOI:10.15951/j.tmgcxb.2012.12.017.YIN Xiaowei,LYU Xilin,LU Wensheng.Experimental study on hysteretic properties of large-size SRC columns with high ratio of encased steel[J].China Civil Engineering Journal,2012,45(12):91-98.DOI:10.15951/j.tmgcxb.2012.12.017.(in Chinese)
[2] MIKI C.Engineering use and application of high-performance steels for steel structures[M].Zurich:IABSE,2005.
[3] GRAHAM P.High strength steel use in Australia,Japan and the US[J].Structural Engineer,2006,11:27-30.
[4]李正良,刘红军,张东英,等.Q460高强度钢在1000kV杆塔的应用[J].电网技术,2008,32(24):1-5.DOI:10.13335/j.1000-3673.pst.2008.24.012.LI Zhengliang,LIU Hongjun,ZHANG Dongying,et al.Application of high-strength steel Q460 in 1000kV transmission towers[J].Power System Technology,2008,32(24):1-5.DOI:10.13335/j.1000-3673.pst.2008.24.012.(in Chinese)
[5]邱林波,刘毅,侯兆新,等.高强结构钢在建筑中的应用研究现状[J].工业建筑,2014,44(3):1-5,47.DOI:10.13204/j.gyjz201403001.QIU Linbo,LIU Yi,HOU Zhaoxin,et al.State application research of high strength steel in steel structures[J].Industrial Construction,2014,44(3):1-5,47.DOI:10.13204/j.gyjz201403001.(in Chinese)
[6]逄靖华,吴宏磊,邱林波.高强度钢材在郑州绿地中央广场中的应用分析[J].工业建筑,2014,44(3):43-47.DOI:10.13204/j.gyjz201403009.PANG Jinghua,WU Honglei,QIU Linbo.Design application of high strength steel in Greenland Central Plaza in Zhengzhou[J].Industrial Construction,2014,44(3):43-47.DOI:10.13204/j.gyjz201403009.(in Chinese)
[7] MAZZONI S,MCKENNA F,SCOTT M H,et al.Open Sees users manual[R].Berkeley:University of California,Berkeley,2004.
[8]刘祖强.型钢混凝土异形柱框架抗震性能及设计方法研究[D].西安:西安建筑科技大学,2012.LIU Zuqiang.Research on seismic performance and design method of steel reinforced concrete frame with special-shaped columns[D].Xi’an:Xi’an University of Architecture and Technology,2012.(in Chinese)
[9] ELWOOD K J.Shake table tests and analytical studies on the gravity load collapse of RC frames[D].Berkeley:University of California,Berkeley,2002.
[10]高嵩.基于OpenSees的钢筋混凝土非线性有限元分析及试验对比[D].合肥:合肥工业大学,2010.GAO Song.Nonlinear finite element analysis of reinforced concrete based on opensees and experimental comparesion[D].Hefei:Hefei University of Technology,2010.(in Chinese)
[11]朱雁茹,郭子雄.基于OpenSEES的SRC柱低周往复加载数值模拟[J].广西大学学报(自然科学版),2010,35(4):555-559.DOI:10.13624/j.cnki.issn.1001-7445.2010.04.017.ZHU Yanru,GUO Zixiong.Numerical simulation of SRC column under low-cyclic loading based on OpenSEES[J].Journal of Guangxi University(Natural Science Edition),2010,35(4):555-559.DOI:10.13624/j.cnki.issn.1001-7445.2010.04.017.(in Chinese)
[12]杨怡亭.高强型钢混凝土组合柱承载力与抗震性能研究[D].北京:北京科技大学,2016.YANG Yiting.The bearing capacity and seismic performance of high strength steel reinforced concrete column[D].Beijing:University of Science and Technology Beijing,2016.(in Chinese)
[13] KENT D C.Inelastic behavior of reinforced concrete members with cyclic loading[D].Christchurch:University of Canterbury,1969.
[14] SCOTT B D,PARK R,PRIESTLEY M J N.Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates[J].Journal of the American Concrete Institute,1982,79(1):13-27.
[15] PARK R,PRIESTLEY M J N,GILL W D.Ductility of square-confined concrete columns[J].Journal of the Structural Division,1982,108(4):929-950.
[16] MENEGOTTO M,PINTO P E.Method of analysis for cyclically loaded reinforced concrete plane frames including changes in geometry and nonelastic behavior of elements under combined normal force and bending[C]//Proceedings of IABSE Symposiumon Resistance and Ultimate Deformability of Structures.Lisbon,1973:15-22.
[17]陈才华.型钢混凝土压弯试件试验研究及数值计算[D].北京:中国建筑科学研究院,2007.CHEN Caihua.Experimental study and numerical analysis on steel reinforced concrete compression-bending members[D].Beijing:China Academy of Building Research,2007.(in Chinese)
[18]殷小溦,吕西林,卢文胜.大比尺高含钢率型钢混凝土柱滞回性能试验[J].土木工程学报,2012,45(12):91-98.DOI:10.15951/j.tmgcxb.2012.12.017.YIN Xiaowei,LYU Xilin,LU Wensheng.Experimental study on hysteretic properties of large-size SRC columns with high ratio of encased steel[J].China Civil Engineering Journal,2012,45(12):91-98.DOI:10.15951/j.tmgcxb.2012.12.017.(in Chinese)