预应力钢带加固钢筋混凝土短柱抗震性能试验研究
|
摘要
为研究预应力钢带加固钢筋混凝土短柱的抗震性能,对6个预应力钢带加固钢筋混凝土短柱试件和3个对比试件进行低周反复荷载试验。结合试验研究结果,分析预应力钢带加固柱的破坏形态、滞回曲线、位移延性系数、骨架曲线、耗能性能和刚度退化;研究轴压比、剪跨比、钢带间距对加固试件抗震性能的影响。试验结果表明,采用预应力钢带加固钢筋混凝土短柱可以明显改善其延性、变形能力和耗能性能,并且能显著提高短柱的抗剪承载力,抗震性能得到显著提高和改善。
In order to investigate the seismic performance of reinforced concrete short column retrofitted by prestressed steel strip( abbreviated to PSRC column),low-cyclic reversed loading tests of six PSRC column specimens and three comparison specimens were conducted,in which the columns were vertically loaded and horizontally cycle-loaded.During the tests,the final failure patterns,hysteresis curves,displacement ductility coefficient,skeleton curves,energy consumption values and stiffness degradation of these PSRC column specimens were fully analyzed. And the influences of the key parameters such as axial compression ratio,shear span ratio and steel strip space on the seismic behavior of the strengthened specimens were studied. From the experimental results,it was shown that the ductility,shear carrying capacity,and energy dissipation were improved obviously,and it was verified that seismic performance of PSRC column had been successfully improved by the prestressed steel strips,this new retrofitted method was effective and reliability.
In order to investigate the seismic performance of reinforced concrete short column retrofitted by prestressed steel strip( abbreviated to PSRC column),low-cyclic reversed loading tests of six PSRC column specimens and three comparison specimens were conducted,in which the columns were vertically loaded and horizontally cycle-loaded.During the tests,the final failure patterns,hysteresis curves,displacement ductility coefficient,skeleton curves,energy consumption values and stiffness degradation of these PSRC column specimens were fully analyzed. And the influences of the key parameters such as axial compression ratio,shear span ratio and steel strip space on the seismic behavior of the strengthened specimens were studied. From the experimental results,it was shown that the ductility,shear carrying capacity,and energy dissipation were improved obviously,and it was verified that seismic performance of PSRC column had been successfully improved by the prestressed steel strips,this new retrofitted method was effective and reliability.
引文
[1]孟繁杰.钢筋混凝土粘钢加固技术的研究与工程应用[D].天津:天津大学,2012.
[2]黄兴棣.建筑物鉴定加固与增层改造[M].北京:中国建筑工业出版社,2009:25-33,185-280.
[3]郭子雄,张杰,杨勇.设置外包预应力钢板箍RC短柱抗震性能研究[J].哈尔滨工业大学学报,2006,38(1):140-144.
[4]郭子雄,张杰,李传林.预应力钢板箍加固高轴压比框架柱抗震性能研究[J].土木工程学报,2009,42(12):112-117.
[5]郭子雄,吴毅斌,曾建宇.预应力钢板箍加固RC短柱抗剪承载力试验研究[J].工程力学,2010,27(3):138-144.
[6]周小真,姜维山.高轴压作用下钢筋混凝土短柱抗震性能的试验研究[J].西安冶金建筑学院学报,1985,42(2):103-119.
[7]陈家夔.钢筋混凝土框架柱的抗震性能[J].西南交通大学学报,1990(2):23-32.
[8]Chen W F.Plasticity in Reinforced Concrete[M].New York:Mc Graw-Hill,1982.
[9]Nielsen M P.Limit Analysis and Concrete Plasticity[M].Englewood Cliffs,New Jersey:Prentice-Hall,1984.
[10]Zhang J P.Diagonal Cracking and Shear Strength of Reinforced Concrete Beams[J].Magazine of Concrete Research,1997,49(178):55-65.
[11]赵彤,周晓洁,谢剑.用碳纤维布改善钢筋混凝土极短柱抗震性能的试验研究[J].地震工程与工程震动,2002(1):84-91.
[12]Design Guidance for Strengthening Concrete Structures Using Fiber Composite Materials[S].European Committee for Standardization,2000.
[13]杨坤,史庆轩,赵均海,等.高强箍筋约束高强混凝土柱的抗轴压性能[J].工业建筑,2013,43(2):9-13,28.
[14]郭子雄,曾建宇,黄群贤,等.预应力钢板箍加固RC柱轴压性能试验研究[J].建筑结构学报,2012,33(11):124-131.
[2]黄兴棣.建筑物鉴定加固与增层改造[M].北京:中国建筑工业出版社,2009:25-33,185-280.
[3]郭子雄,张杰,杨勇.设置外包预应力钢板箍RC短柱抗震性能研究[J].哈尔滨工业大学学报,2006,38(1):140-144.
[4]郭子雄,张杰,李传林.预应力钢板箍加固高轴压比框架柱抗震性能研究[J].土木工程学报,2009,42(12):112-117.
[5]郭子雄,吴毅斌,曾建宇.预应力钢板箍加固RC短柱抗剪承载力试验研究[J].工程力学,2010,27(3):138-144.
[6]周小真,姜维山.高轴压作用下钢筋混凝土短柱抗震性能的试验研究[J].西安冶金建筑学院学报,1985,42(2):103-119.
[7]陈家夔.钢筋混凝土框架柱的抗震性能[J].西南交通大学学报,1990(2):23-32.
[8]Chen W F.Plasticity in Reinforced Concrete[M].New York:Mc Graw-Hill,1982.
[9]Nielsen M P.Limit Analysis and Concrete Plasticity[M].Englewood Cliffs,New Jersey:Prentice-Hall,1984.
[10]Zhang J P.Diagonal Cracking and Shear Strength of Reinforced Concrete Beams[J].Magazine of Concrete Research,1997,49(178):55-65.
[11]赵彤,周晓洁,谢剑.用碳纤维布改善钢筋混凝土极短柱抗震性能的试验研究[J].地震工程与工程震动,2002(1):84-91.
[12]Design Guidance for Strengthening Concrete Structures Using Fiber Composite Materials[S].European Committee for Standardization,2000.
[13]杨坤,史庆轩,赵均海,等.高强箍筋约束高强混凝土柱的抗轴压性能[J].工业建筑,2013,43(2):9-13,28.
[14]郭子雄,曾建宇,黄群贤,等.预应力钢板箍加固RC柱轴压性能试验研究[J].建筑结构学报,2012,33(11):124-131.
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