碳纤维布加固低强度空斗墙试验研究
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摘要
进行了2片未加固和4片碳纤维布加固的低强度空斗墙的水平低周反复荷载试验,研究了空斗墙加固前后的破坏形态、承载能力和极限变形能力等抗震性能。试验结果表明,三斗一眠空斗墙的抗震性能优于全空斗墙体;采用X交叉形式对空斗墙进行抗震加固能取得较好加固效果。建议实际工程中采用X交叉形式对空斗墙进行抗震加固,两端粘贴竖向碳纤维布加固空斗墙的效果有待进一步研究。
Two unstrengthened low strength cavity wall and four cavity walls strengthened with CFRP were tested under low frequency cyclic horizontal load.The seismic behaviors of the walls were analyzed,such as the failure mode,ultimate strength and deformability and so on.The experimental results show that,the sesimic behaviors of the walls with horizontal bricks are better than the all-rowlock cavity walls,and the sesimic capacity of the cavity wall can be improved when it is strengthened with "X" style-pasted CFRP.It is suggested that "X" style CFRP can be pasted on the wall for seismic strengthening in the project.The strengthening effect of walls with vertical CFRP pasted on the both side of the cavity wall needs further research.
Two unstrengthened low strength cavity wall and four cavity walls strengthened with CFRP were tested under low frequency cyclic horizontal load.The seismic behaviors of the walls were analyzed,such as the failure mode,ultimate strength and deformability and so on.The experimental results show that,the sesimic behaviors of the walls with horizontal bricks are better than the all-rowlock cavity walls,and the sesimic capacity of the cavity wall can be improved when it is strengthened with "X" style-pasted CFRP.It is suggested that "X" style CFRP can be pasted on the wall for seismic strengthening in the project.The strengthening effect of walls with vertical CFRP pasted on the both side of the cavity wall needs further research.
引文
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[2]赵冬,韩用兵,叶建青.2006年2月浙江泰顺—文成地震震群震害特征[J].震灾防御技术,2006,1(2):169-171.
[3]刘沩.高性能水泥复合砂浆钢筋网薄层(HPFL)加固农村民居空斗砌体抗震性能试验研究[D].长沙:湖南大学,2009.
[4]田世民,廖娟.钢板网片在空斗墙加固中的应用[J].住宅科技,2000(6):35-38.
[5]汤伟民,周坚毅,吴策,等.空斗墙加固后的抗震性能试验研究[J].结构工程师,2011,27(S1):201-205.
[6]王卓琳,蒋利学.高强钢绞线-聚合物砂浆加固低强度空斗墙的试验研究[J].工业建筑,2011(11):60-65.
[7]中国建筑科学研究院.JGJ101—96建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.
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