L形截面外包钢加固柱抗震性能试验研究
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摘要
对3根损坏的钢骨混凝土L形截面柱和1根损坏的钢筋混凝土L形截面柱进行外包角钢加固,并对加固后的试件进行低周反复加载试验,考察了加固后L形截面柱的破坏形态、滞回曲线、耗能能力、延性和退化刚度。结果表明,加固试件均呈现为腹板自由端混凝土被压碎的破坏形式,滞回曲线相对饱满,具有良好的抗震性能。
This paper describes an experimental research on 3 damaged steel reinforced L shape section concrete columns and a damaged normal L shape section concrete column strengthened by steel encasement under horizontal low cyclic loading.Based on the test results,failure mode,the hysteretic curves,energy dissipation,ductility and stiffness degradation were examined.The results indicated that,the failure mode of the column enhanced by steel encasement was concrete crush of the web of the columns,and their hysteretic curves were plump,and they performed good seismic performance.
This paper describes an experimental research on 3 damaged steel reinforced L shape section concrete columns and a damaged normal L shape section concrete column strengthened by steel encasement under horizontal low cyclic loading.Based on the test results,failure mode,the hysteretic curves,energy dissipation,ductility and stiffness degradation were examined.The results indicated that,the failure mode of the column enhanced by steel encasement was concrete crush of the web of the columns,and their hysteretic curves were plump,and they performed good seismic performance.
引文
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[4]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.
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[2]邵永健.型钢混凝土异形柱轴压力系数限值的试验与理论分析[J].建筑结构学报,2007,28(6).
[3]吴佳杰.钢骨混凝土L形截面柱在低周反复荷载作用下的试验研究[D].扬州:扬州大学,2008.
[4]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.
[5]朱伯龙.结构抗震试验[M].北京:地震出版社,1989.
[6]朱伯龙,张瑶联.建筑结构抗震设计原理[M].上海:同济大学出版社,1994.
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