基于刚度退化和滞回耗能的圆钢管混凝土柱损伤模型
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摘要
由于现有的钢管混凝土柱损伤模型中存在损伤计算不收敛、缺乏对构件不同性能水平量化分析等问题,本文结合64个圆钢管混凝土试件,以试件钢管破坏现象、承载力变化和侧移等指标,建立了钢管混凝土柱试件损坏程度、破坏现象与损伤指数对应关系,并提出基于刚度退化与滞回耗能指标的S-E双参数损伤模型(S与E分别为stiffness和energy的缩写),最后通过低周反复试验试件、低周疲劳试验试件以及一榀框架结构试验试件验证了S—E损伤模型的合理性。结果表明,本文提出的损伤模型计算曲线与试件实际损伤曲线吻合良好,能合理评估构件不同阶段的损坏程度,为进一步研究地震作用下钢管混凝土柱的损伤评估提供参考。
As the calculation of concrete-filled circular steel tube( CFST) damage models can't match the real damage states and there is no performance levels for CFST members,in the paper experimental data of 64 CFST columns were extensively studied,and the relationship between the damage conditions of the CFST columns and the damage indexes was built by considering the failure of the steel-tube,bearing capacity and lateral drift of the columns,then a new damage model,S-E damage model,which was based on stiffness degradation and hysteretic energy dissipation,was proposed. Finally,the new S-E damage model was verified by experiments of some low cyclic,low-cycle fatigue specimens and a CFST frame structure. Results show that the damage index curve calculated by using the S-E damage model was in good agreement with the practical damage curve of the specimens,and the damage conditions corresponding to different stages could be assessed reasonably,which provided references for the further study of damage assessment of CFST columns under seismic excitations.
As the calculation of concrete-filled circular steel tube( CFST) damage models can't match the real damage states and there is no performance levels for CFST members,in the paper experimental data of 64 CFST columns were extensively studied,and the relationship between the damage conditions of the CFST columns and the damage indexes was built by considering the failure of the steel-tube,bearing capacity and lateral drift of the columns,then a new damage model,S-E damage model,which was based on stiffness degradation and hysteretic energy dissipation,was proposed. Finally,the new S-E damage model was verified by experiments of some low cyclic,low-cycle fatigue specimens and a CFST frame structure. Results show that the damage index curve calculated by using the S-E damage model was in good agreement with the practical damage curve of the specimens,and the damage conditions corresponding to different stages could be assessed reasonably,which provided references for the further study of damage assessment of CFST columns under seismic excitations.
引文
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[3]郭蓉.加固方钢管混凝土框架的抗震性能试验与理论研究[D].天津:天津大学建筑工程学院,2007.GUO Rong.Experimental andtheoretical research on seismic behavior of strengthened concrete-filled square tubular frame[D].Tianjin:Tianjin University school of Civil Engineering,2007.(in Chinese)
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[7]隋海燕.圆钢管高强混凝土柱低周疲劳性能试验与理论研究[D].大庆:东北石油大学,2011.SUI Haiyan.Experimental andtheoretical research on low cycle fatigue performance of high-strength concrete filled circular steel tubular columns[D].Daqing,Northeast Petroleum University,2011.(in Chinese)
[8]P.Gajalakshmi,H.Jane Helena.Behaviour of concrete-filled steel columns subjected to lateral cyclic loading[J].Journal of Constructional Steel Research,2012,75:55-63.
[9]于海祥,武建华,张国彬.一种新型的混凝土结构双参数地震损伤模型[J].重庆建筑大学学报,2004,10.YU Haixiang,WU Jianhua,ZHANG Guobin.A new earthquake damage model for RC structure[J].Journal of Chongqing Jianzhu University,2004,10.(in Chinese)
[10]林松.高性能钢管混凝土柱在水平低周反复荷载作用下的试验研究[J].铁道科学与工程学报,2006,3(1):22-26.LIN Song.Experimental studies on horizontal low-cyclic loading of high-performance concrete columns filled steel tubular[J].Journal of Railway Science and Engineering,2006,3(1):22-26.(in Chinese)
[11]韩林海,姜绍飞,曹宇清,等.大轴压比情况下钢管混凝土柱滞回性能的试验研究[J].钢结构,1999,14(4):14-18.HAN linhai,JIANG shaofei,CAO yuqing,et al.Experimental studies on the hysteric behavior of concrete filled steel tubular columns subjected to high compressive Load[J].Steel structure,1999,14(4):14-18.(in Chinese)
[12]伊新富,方鸿强.钢管高强混凝土压弯构件抗震性能的试验研究[J].建筑钢结构进展,2004,6(2):23-32.YI Xinfu,FANG Hongqiang.Experimentalstudy on the seismic performance of concrete filled steel tubular columns[J].Progress in Steal Building Structures,2004,6(2):23-32.(in Chinese)
[13]王湛,甄永辉.钢管高强混凝土压弯构件滞回性能的研究[J].地震工程与工程振动,2000,20(4):51-55.WANG Zhan,ZHEN Yonghui.Research on hysteretic behavior of high strength concrete filled steel tubular member under compression and bending[J].Earthquake Engineering and Engineering Vibration,2000,20(4):51-55.(in Chinese)
[14]张春梅,阴毅,周云.钢管高强混凝土柱抗震性能的试验研究[J].地震工程与工程振动,2004,24(4):86-89.ZHANG chunmei,YIN yi,ZHOU yun.Experimentalstudy on seismic behaviors of high strength concrete filled steel tube columns[J].Earthquake Engineering and Engineering Vibration,2004,24(4):86-89.(in Chinese)
[15]窦立军,钟善桐.钢管混凝土低周疲劳的实验研究[J].哈尔滨建筑工程学院学报,1991,24:81-87.DOU Lijun,ZHONG Shantong.The experimental research of low-cycle fatigue for CFST[J].Journal of Harbin University of Civil Engineering and Architecture,1991,24:81-87.(in Chinese)
[16]韩林海,杨有福,游经团,等.圆钢管混凝土压弯构件滞回性能的试验研究与理论分析[J].中国公路学报,2004,17(3):51-56.HAN Linhai,YANG Youfu,YOU Jingtuan,et al.Experimental andtheoretical studies on the hysteretic behavior of beam-columns of concrete-filled circular steel tubes[J].China Journal of Highway and Transport,2004,17(3):51-56.(in Chinese)
[17]何文辉.约束钢管混凝土柱抗震性能的试验与理论研究[D].湖南:湖南大学,2004.HE Wenhui.Experimental andtheoretical research of seismic behavior of confined concrete filled tubular columns[D].Hunan:Hunan University,2004.(in Chinese)
[18]Yan Xiao,Zhongxin Zhang,Jianhua Hu,et al.Seismic behavior of CFT column and steel pile footings[J].Journal of Bridge Engineering,2011,16:576-586.
[19]Julia Marson,Michel Bruneau,M.Cyclic testing of concrete-filled circular steel bridge piers having encased fixed-based detail[J].Journal of Bridge Engineering,2004,9:14-23.
[20]GB 50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.GB 50011-2010 Code for Seismic Design of Buildings[S].Beijing:Building Industry Press of China,2010.(in Chinese)
[21]杜修力,欧进萍.建筑结构地震破坏评估模型[J].世界地震工程,1991,7(3):52-58.Du Xiuli,Ou Jinping.Seismicdamage assessment of building structures[J].World Earthquake Engineering,1991,7(3):52-58.(in Chinese)
[22]吴轶,杨春,郑军光,等.带耗能腋撑型钢混凝土梁转换结构抗震性能研究[J].土木工程学报,2012,45(6):74-82.WU Yi,YANG Chun,ZHENG Junguang,et al.Preliminary study on seismic behavior of SRC beam transfer structures with supplemental energy dissipation haunch braces[J].China Civil Engineering Journal,2012,45(6):74-82.(in Chinese)
[2]邱法维,杨卫东,欧进萍.钢管混凝土柱滞回耗能和累积损伤的实验研究[J].哈尔滨建筑大学学报,1996,29(3):41-45.QIU Fawei,YANG Weidong,OU Jinping.Testing research for the dissipated hysteric energy and accumulated damage of CFST column[J].Journal of Harbin University of Civil Engineering and Architecture,1996,29(3):41-45.(in Chinese)
[3]郭蓉.加固方钢管混凝土框架的抗震性能试验与理论研究[D].天津:天津大学建筑工程学院,2007.GUO Rong.Experimental andtheoretical research on seismic behavior of strengthened concrete-filled square tubular frame[D].Tianjin:Tianjin University school of Civil Engineering,2007.(in Chinese)
[4]杜喜凯.往复荷载作用下钢管混凝土柱性能试验及理论分析[D].天津:天津大学建筑工程学院,2010.DU Xikai.Experimental research and theoretical analysis of seismic behavior of concrete-filled steel tube beam-columns under cyclic loading[D].Tianjin:Tianjin University school of Civil Engineering,2010.(in Chinese)
[5]阎宇.低周反复水平荷载作用下方钢管混凝土柱损伤模型的研究[D].青岛:青岛理工大学,2010.YAN Yu.Research of damage model of concrete-filled Steel tube under low cyclic[D].Qingdao:Qingdao Technological University,2010.(in Chinese)
[6]张国伟.钢管混凝土柱在地震作用下的累积损伤性能研究[D].湖南:湖南大学,2009.ZHANG Guowei.Research oncumulative seismic damage of CFT columns[D].Hunan:Hunan University,2009.(in Chinese)
[7]隋海燕.圆钢管高强混凝土柱低周疲劳性能试验与理论研究[D].大庆:东北石油大学,2011.SUI Haiyan.Experimental andtheoretical research on low cycle fatigue performance of high-strength concrete filled circular steel tubular columns[D].Daqing,Northeast Petroleum University,2011.(in Chinese)
[8]P.Gajalakshmi,H.Jane Helena.Behaviour of concrete-filled steel columns subjected to lateral cyclic loading[J].Journal of Constructional Steel Research,2012,75:55-63.
[9]于海祥,武建华,张国彬.一种新型的混凝土结构双参数地震损伤模型[J].重庆建筑大学学报,2004,10.YU Haixiang,WU Jianhua,ZHANG Guobin.A new earthquake damage model for RC structure[J].Journal of Chongqing Jianzhu University,2004,10.(in Chinese)
[10]林松.高性能钢管混凝土柱在水平低周反复荷载作用下的试验研究[J].铁道科学与工程学报,2006,3(1):22-26.LIN Song.Experimental studies on horizontal low-cyclic loading of high-performance concrete columns filled steel tubular[J].Journal of Railway Science and Engineering,2006,3(1):22-26.(in Chinese)
[11]韩林海,姜绍飞,曹宇清,等.大轴压比情况下钢管混凝土柱滞回性能的试验研究[J].钢结构,1999,14(4):14-18.HAN linhai,JIANG shaofei,CAO yuqing,et al.Experimental studies on the hysteric behavior of concrete filled steel tubular columns subjected to high compressive Load[J].Steel structure,1999,14(4):14-18.(in Chinese)
[12]伊新富,方鸿强.钢管高强混凝土压弯构件抗震性能的试验研究[J].建筑钢结构进展,2004,6(2):23-32.YI Xinfu,FANG Hongqiang.Experimentalstudy on the seismic performance of concrete filled steel tubular columns[J].Progress in Steal Building Structures,2004,6(2):23-32.(in Chinese)
[13]王湛,甄永辉.钢管高强混凝土压弯构件滞回性能的研究[J].地震工程与工程振动,2000,20(4):51-55.WANG Zhan,ZHEN Yonghui.Research on hysteretic behavior of high strength concrete filled steel tubular member under compression and bending[J].Earthquake Engineering and Engineering Vibration,2000,20(4):51-55.(in Chinese)
[14]张春梅,阴毅,周云.钢管高强混凝土柱抗震性能的试验研究[J].地震工程与工程振动,2004,24(4):86-89.ZHANG chunmei,YIN yi,ZHOU yun.Experimentalstudy on seismic behaviors of high strength concrete filled steel tube columns[J].Earthquake Engineering and Engineering Vibration,2004,24(4):86-89.(in Chinese)
[15]窦立军,钟善桐.钢管混凝土低周疲劳的实验研究[J].哈尔滨建筑工程学院学报,1991,24:81-87.DOU Lijun,ZHONG Shantong.The experimental research of low-cycle fatigue for CFST[J].Journal of Harbin University of Civil Engineering and Architecture,1991,24:81-87.(in Chinese)
[16]韩林海,杨有福,游经团,等.圆钢管混凝土压弯构件滞回性能的试验研究与理论分析[J].中国公路学报,2004,17(3):51-56.HAN Linhai,YANG Youfu,YOU Jingtuan,et al.Experimental andtheoretical studies on the hysteretic behavior of beam-columns of concrete-filled circular steel tubes[J].China Journal of Highway and Transport,2004,17(3):51-56.(in Chinese)
[17]何文辉.约束钢管混凝土柱抗震性能的试验与理论研究[D].湖南:湖南大学,2004.HE Wenhui.Experimental andtheoretical research of seismic behavior of confined concrete filled tubular columns[D].Hunan:Hunan University,2004.(in Chinese)
[18]Yan Xiao,Zhongxin Zhang,Jianhua Hu,et al.Seismic behavior of CFT column and steel pile footings[J].Journal of Bridge Engineering,2011,16:576-586.
[19]Julia Marson,Michel Bruneau,M.Cyclic testing of concrete-filled circular steel bridge piers having encased fixed-based detail[J].Journal of Bridge Engineering,2004,9:14-23.
[20]GB 50011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.GB 50011-2010 Code for Seismic Design of Buildings[S].Beijing:Building Industry Press of China,2010.(in Chinese)
[21]杜修力,欧进萍.建筑结构地震破坏评估模型[J].世界地震工程,1991,7(3):52-58.Du Xiuli,Ou Jinping.Seismicdamage assessment of building structures[J].World Earthquake Engineering,1991,7(3):52-58.(in Chinese)
[22]吴轶,杨春,郑军光,等.带耗能腋撑型钢混凝土梁转换结构抗震性能研究[J].土木工程学报,2012,45(6):74-82.WU Yi,YANG Chun,ZHENG Junguang,et al.Preliminary study on seismic behavior of SRC beam transfer structures with supplemental energy dissipation haunch braces[J].China Civil Engineering Journal,2012,45(6):74-82.(in Chinese)
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