碳-芳混杂纤维布加固木柱轴心抗压性能试验研究  

Experimental Study on Mechanical Properties of Timber Columns Strengthened with CFRP/AFRP Hybrid FRP Sheets under Axial Compression

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]南京航空航天大学土木系,江苏南京210016

出　　处：《建筑材料学报》2011年第3期427-431,共5页Journal of Building Materials

基　　金：国家自然科学基金资助项目(51008059);中国博士后特别资助项目(201003543);中国博士后科学基金资助项目(20090450072);江苏省博士后科学基金资助项目(0901003c)

摘　　要：通过碳-芳混杂纤维布加固圆木柱(杉木和松木)的轴心抗压性能试验,研究了不同层数的碳-芳混杂纤维布加固圆木柱的破坏形式、轴心抗压强度、峰值压应变和荷载-应变曲线.结果表明:用碳-芳混杂纤维布加固后,圆木柱的轴心抗压强度和峰值压应变有了明显的提高,轴心抗压强度提高幅度约为6.6%～16.8%(松木)和5.0%～16.9%(杉木),峰值压应变提高幅度约为8.9%～60.2%(松木)和11.5%～56.8%(杉木).基于试验数据拟合,提出了碳-芳混杂纤维布加固圆木柱轴心抗压承载力的计算公式.Based on the experiment of timber circular columns made of deal and fir reinforced by CFRP/ AFRP hybrid FRP（HFRP） sheets under axial compression,the failure modes,axial bearing capacity, peak compression strain and loading-strain curves were investigated.The results show that comparing with the specimens without being reinforced by HFRP,the axial bearing capacity and peak compression strain of the specimens reinforced by HFRP are all improved.The axial bearing capacity of deal specimens is improved by 6.6%-16.8%,and the axial bearing capacity of fir specimens is improved by 5.0%-16.9%. The peak compression strain of deal specimens is improved by 8.9%- 60.2%,and the peak compression strain of fir specimens is improved by 11.5%- 56.8%.Based on experimental data,the computing formulas of axial bearing capacity of timber circular columns made of deal and fir reinforced by HFRP are presented.

关 键 词：混杂纤维布 圆木柱 轴心抗压强度 峰值压应变 

分 类 号：TU366.2[建筑科学—结构工程]