碳-芳混杂纤维布加固木梁抗剪性能分析  

Shear behavior of timber beams strengthened with CFRP/AFRP hybrid FRP sheet

作　　者：淳庆[1] 潘建伍[2] 

机构地区：[1]东南大学城市与建筑遗产保护教育部重点实验室,江苏南京210096 [2]南京航空航天大学航空宇航学院,江苏南京210016

出　　处：《解放军理工大学学报（自然科学版）》2011年第6期654-658,共5页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金重点资助项目(51138002);国家自然科学基金资助项目(51008059)

摘　　要：为研究碳-芳混杂纤维布加固矩形木梁的抗剪性能,进行了12根试件的抗剪试验,包括4根未加固梁,4根粘贴1层碳-芳混杂纤维布的加固梁,4根粘贴2层碳-芳混杂纤维布的加固梁,其中松木和杉木试件各占一半。试验结果表明:相比未加固木梁试件,木梁经碳-芳混杂纤维布加固后,其抗剪承载力有了明显的提高,提高幅度约为6.9%～109.6%(松木)和11.9%～103.6%(杉木)。并分析了破坏形式、荷载与应变关系等规律。最后,基于试验数据拟合,建立了碳-芳混杂纤维布加固矩形木梁抗剪承载力的计算公式。To study the shear behavior of timber rectangle beams strengthened with carbon fiber reinforced polymer（CFRP）/aramid fiber reinforced polymer（AFRP） hybrid FRP（HFRP） sheets,shear test on 12 specimens were carried out,including four unstrengthened specimens and four specimens strengthened with one layer of HFRP sheet and four specimens strengthened with two layers of HFRP sheets in this experiment.The number of specimens about deal and fir are half each.The results show that compared with the unstrengthened specimens,there is great improvement in the shear capacity of the specimens strengthened with HFRP sheet.The shear capacity of the deal specimens improves by 6.9%～109.6%,and the shear capacity of the fir specimens improves by 11.9%～103.6%.The failure modes and loading-strain curves were also analyzed.Based on the experimental data,the computing formulas of the shear capacity of timber rectangle beams made of deal and fir strengthened with HFRP were presented.

关 键 词：混杂纤维布 木梁 抗剪承载力 加固 

分 类 号：TU366.2[建筑科学—结构工程]