内嵌碳纤维筋加固木梁抗弯性能试验  

Experiment on flexural behavior of timber beams strengthened with near-surface mounted CFRP rods

作　　者：淳庆[1] 张洋[2] 潘建伍[3] 

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]东南大学土木工程学院,江苏南京210096 [3]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）》2013年第2期190-194,共5页Journal of PLA University of Science and Technology(Natural Science Edition)

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

摘　　要：为研究碳纤维筋加固矩形木梁的抗弯性能,进行了12根试件的抗弯试验,包括4根未加固梁、4根梁底内嵌1根6mm碳纤维筋的加固梁、4根梁底内嵌1根8mm碳纤维筋的加固梁,其中松木和杉木各占一半。试验结果表明:内嵌碳纤维筋加固后的木梁抗弯承载力和延性均有一定的提高,抗弯承载力提高幅度分别为91%～169%(松木)和57%～216%(杉木)。木梁截面应变沿高度方向的分布基本符合平截面假定。最后,基于试验数据拟合,提出了内嵌碳纤维筋加固木梁抗弯承载力的计算公式。To study the flexural behavior of timber rectangle beams strengthened with near-surface mounted carbon fiber reinforced polymer （CFRP） rods, experiment on 12 specimens was carried out, including four unstrengthened specimens,four specimens strengthened with one ~6 mm CFRP rod and four specimens strengthened with one ~8 mm CFRP rod. The number of the specimens of deal and fir was half each. The results showed that compared with the specimens without being strengthened by CFRP rods, there is cer- tain improvement in flexural capacity and ductility of the specimens strengthened with near-surface mount- ed CFRP rods respectively. Flexural capacity of the deal specimens was increased by 9.1~16.9~, and that of the fir specimens was increased by 5. 7~21.6%. Based on the experimental data, the computing formulas of flexural capacity of timber rectangle beams made of deal and fir strengthened with near-surface mounted CFRP rods were presented.

关 键 词：内嵌碳纤维筋 木梁 抗弯承载力 破坏模式 

分 类 号：TU366.2[建筑科学—结构工程]