端部成束筒约束RC柱
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摘要
对于钢筋混凝土(RC)框架结构,在地震发生时框架底层RC柱易发生纵向受力钢筋局部屈曲与受压区混凝土压碎。为了改善RC柱的抗震性能,提出一种端部成束筒约束的新型RC柱设计理念。通过4根成束筒约束方形截面RC柱的轴心受压试验研究,结果表明成束筒约束RC柱的残余承载力与变形能力均得到有效提高,但是其峰值承载力下降了近30%。
For reinforced concrete frames subjected to seismic action,the base reinforced columns are prone to occur local buckling of steel bars and crushed concrete.In order to improve the mechanical behavior of seismic performance of RC column,a new design concept concerning RC column with bundle confinement tube at its ends was put forward.Four RC columns with bundle confinement tube at ends were investigated under axial compression.The results show residual loadcarrying capacity and deformation capacity of this kind of RC column with bundle confinement tube,compared to the RC column without that,are effectively improved,but the peak load decreases by about 30 percent.
For reinforced concrete frames subjected to seismic action,the base reinforced columns are prone to occur local buckling of steel bars and crushed concrete.In order to improve the mechanical behavior of seismic performance of RC column,a new design concept concerning RC column with bundle confinement tube at its ends was put forward.Four RC columns with bundle confinement tube at ends were investigated under axial compression.The results show residual loadcarrying capacity and deformation capacity of this kind of RC column with bundle confinement tube,compared to the RC column without that,are effectively improved,but the peak load decreases by about 30 percent.
引文
[1]陈忠范.高层建筑结构[M].南京:东南大学出版社,2008.
[2]中国建筑科学研究院.2008年汶川地震建筑震害图片集[M].北京:中国建筑工业出版社,2008.
[3]王亚勇.汶川地震建筑震害启示——抗震概念设计[J].建筑结构学报,2008,29(4):20-25.
[4]王亚勇.概论汶川地震后我国建筑抗震设计标准的修改[J].土木工程学报,2009,42(5):1-12.
[5]林旭川,潘鹏,叶列平,等.汶川地震中典型RC框架结构的震害仿真与分析[J].土木工程学报,2009,42(5):13-20.
[6]张敏政.从汶川地震看抗震设防和抗震设计[J].土木工程学报,2009,42(5):21-24.
[7]冯远,刘兰花,易勇,等.多层钢筋混凝土框架柱震害调查分析与启示[J].土木工程学报,2010,43(10):63-72.
[8]ATC 40 Seismic evaluation and retrofit of concrete buildings[S].Applied Technology Council,1996.
[9]DOOLEY K L,BRACCI J M.Seismic evaluation of column-to-beam strength ratios in reinforced concrete frames[J].ACI Structural Journal,2001,98(6):843-851.
[10]敬登虎.钢筋混凝土框架强柱弱梁屈服机制问题的分析[J].土木工程与管理学报,2011,28(3):254-258.
[11]尹衍樑.矩形混凝土柱新的约束型式之研发(I)一笔箍、格网箍筋及电焊方箍[J].土木工程学报,2004,37(8):1-11.
[12]尹衍樑.矩形混凝土柱新的约束型式之研发(Ⅱ)外方内圆、组合螺箍及其衍生型式[J].土木工程学报,2004,37(10):1-12.
[13]尹衍樑,翁正强,王瑞祯,等.预铸复合螺箍SRC柱之轴压行为研究[J].中国工程科学,2006,8(12):16-30.
[14]尹衍樑,翁正强,王瑞祯,等.新型五螺箍SRC柱的反复载重抗震试验[J].中国科学,2008,38(9):1414-1439.
[15]李忠献.钢筋混凝土分体柱理论与技术[J].工程力学,2005,22(S):128-141.
[16]曹新明,杨力列,朱国良.区域约束混凝土轴心受压矩形柱受力性能研究[J].重庆建筑大学学报,2008,30(3):83-86.
[17]曹新明,肖常安,肖建春,等.区域约束混凝土浅析[J].工程抗震与加固改造,2008,30(5):112-115.
[18]曹新明,席晓云.纵向钢筋对矩形混凝土轴心受压柱延性的影响[J].贵州工业大学学报,2002,31(5):68-74.
[19]张大长,张怀亮,韩丽婷.塑性铰区埋入高阻尼隔震橡胶后RC柱抗震性能的试验研究[J].工程力学,2009,26(10):102-110.
[20]LAMBERT-AIKHIONBARE N,TABSH.S W.Ductility enhancement of high strength concrete column with welded wire mesh[C]//Proceedings of Structures Congress.ASCE,2004.
[21]WU Y F,ZHOU Y W,WEI Y Y.Improving the ductility of RC columns via compression yielding[C]//Proceeding of the International Symposium on Life-Cycle Performance of Bridges and Structures.Changsha,2010:507-513.
[22]TOMII M.Non-hooped reinforced concrete columns and beam-column connections laterally confined in bellows square steel tube[C]//Proceedings of Tom Paulay Symposium.La Jolla,California,1993:383-402.
[2]中国建筑科学研究院.2008年汶川地震建筑震害图片集[M].北京:中国建筑工业出版社,2008.
[3]王亚勇.汶川地震建筑震害启示——抗震概念设计[J].建筑结构学报,2008,29(4):20-25.
[4]王亚勇.概论汶川地震后我国建筑抗震设计标准的修改[J].土木工程学报,2009,42(5):1-12.
[5]林旭川,潘鹏,叶列平,等.汶川地震中典型RC框架结构的震害仿真与分析[J].土木工程学报,2009,42(5):13-20.
[6]张敏政.从汶川地震看抗震设防和抗震设计[J].土木工程学报,2009,42(5):21-24.
[7]冯远,刘兰花,易勇,等.多层钢筋混凝土框架柱震害调查分析与启示[J].土木工程学报,2010,43(10):63-72.
[8]ATC 40 Seismic evaluation and retrofit of concrete buildings[S].Applied Technology Council,1996.
[9]DOOLEY K L,BRACCI J M.Seismic evaluation of column-to-beam strength ratios in reinforced concrete frames[J].ACI Structural Journal,2001,98(6):843-851.
[10]敬登虎.钢筋混凝土框架强柱弱梁屈服机制问题的分析[J].土木工程与管理学报,2011,28(3):254-258.
[11]尹衍樑.矩形混凝土柱新的约束型式之研发(I)一笔箍、格网箍筋及电焊方箍[J].土木工程学报,2004,37(8):1-11.
[12]尹衍樑.矩形混凝土柱新的约束型式之研发(Ⅱ)外方内圆、组合螺箍及其衍生型式[J].土木工程学报,2004,37(10):1-12.
[13]尹衍樑,翁正强,王瑞祯,等.预铸复合螺箍SRC柱之轴压行为研究[J].中国工程科学,2006,8(12):16-30.
[14]尹衍樑,翁正强,王瑞祯,等.新型五螺箍SRC柱的反复载重抗震试验[J].中国科学,2008,38(9):1414-1439.
[15]李忠献.钢筋混凝土分体柱理论与技术[J].工程力学,2005,22(S):128-141.
[16]曹新明,杨力列,朱国良.区域约束混凝土轴心受压矩形柱受力性能研究[J].重庆建筑大学学报,2008,30(3):83-86.
[17]曹新明,肖常安,肖建春,等.区域约束混凝土浅析[J].工程抗震与加固改造,2008,30(5):112-115.
[18]曹新明,席晓云.纵向钢筋对矩形混凝土轴心受压柱延性的影响[J].贵州工业大学学报,2002,31(5):68-74.
[19]张大长,张怀亮,韩丽婷.塑性铰区埋入高阻尼隔震橡胶后RC柱抗震性能的试验研究[J].工程力学,2009,26(10):102-110.
[20]LAMBERT-AIKHIONBARE N,TABSH.S W.Ductility enhancement of high strength concrete column with welded wire mesh[C]//Proceedings of Structures Congress.ASCE,2004.
[21]WU Y F,ZHOU Y W,WEI Y Y.Improving the ductility of RC columns via compression yielding[C]//Proceeding of the International Symposium on Life-Cycle Performance of Bridges and Structures.Changsha,2010:507-513.
[22]TOMII M.Non-hooped reinforced concrete columns and beam-column connections laterally confined in bellows square steel tube[C]//Proceedings of Tom Paulay Symposium.La Jolla,California,1993:383-402.
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