AFRP加固砖砌体双剪试件抗剪承载力
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摘要
从HFRP加固砖砌体双剪试件的受力模型入手,从理论上分析试件的加固受力机理,推导抗剪承载力计算公式,并进行芳纶纤维复合材料(AFRP)加固砖砌体双剪试件的验证性试验研究。结果表明,所推导的理论计算公式与试验结果吻合较好。并得出影响AFRP布加固砖砌体抗剪极限承载力的主要因素是:有效发挥系数γ、摩擦系数μ和AFRP布条带轴线与灰缝方向的夹角θ。
It takes from the force model of masonry wall double shear specimen strengthened with AFRP,and analyzes it's reinforcement mechanism,then deduces the compute formula of the shear-resistant,and takes a validation study of double shear specimen.The results express that the calculation formula has good accordance with the experiment results.It gets the main factors that influence the ultimate shear-resistant of masonry wall strengthened with AFRP: valid exertive coefficient γ,coefficient of friction μ,the included anger of the AFRP axis and the mortar joint θ.
It takes from the force model of masonry wall double shear specimen strengthened with AFRP,and analyzes it's reinforcement mechanism,then deduces the compute formula of the shear-resistant,and takes a validation study of double shear specimen.The results express that the calculation formula has good accordance with the experiment results.It gets the main factors that influence the ultimate shear-resistant of masonry wall strengthened with AFRP: valid exertive coefficient γ,coefficient of friction μ,the included anger of the AFRP axis and the mortar joint θ.
引文
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[3]MOHAMED A.ELGAWADY,PIERINO LESTUZZI,MARCBADOUX.Aseismic retrofitting of unreinforced masonry walls usingFRP,Composites Part B:Engineering,2006,37:148-162.
[4]赵彤,张晨军,谢剑等.碳纤维布用于砖砌体抗震加固的试验研究[J].地震工程与工程振动,2001,21(2).
[5]张祥顺,谷倩,管克俭等.碳纤维布加固砌体结构试验研究[J].武汉理工大学学报,2002,24(11).
[6]王欣,陆洲导,吕西林.碳纤维技术在砌体结构抗震加固中的试验研究[J].工业建筑,2003,(9).
[7]陈瑶艳,阮积敏,王柏生等.普通玻璃纤维布加固多孔砖砌体的抗震性能试验研究[J].工业建筑,2004,(7).
[8]林磊,叶列平.FRP加固砖砌体墙的试验研究与分析[J].建筑结构,2005,(3).
[9]砌体基本力学性能试验方法标准(GBJ129—90)[S].北京:中国建筑工业出版社,1990.
[10]钱长庚.纤维增强复合材料(FRP)与烧结普通砖粘结性能的试验研究[D].华侨大学,2007.
[11]钱义良,施楚贤主编.砌体结构研究论文集(砌体结构规范GBJ3—88背景资料)[M].湖南大学出版社,1989.4.
[12]骆万康,李锡军.砖砌体剪压复合受力动、静力特性与抗剪强度公式[J].重庆建筑大学学报,2000,(4).
[13]砌体结构设计规范(GBJ3—88)[S].中国建筑工业出版社,1988.
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