CFRP布加固木构件抗压性能试验研究

Wood compressive test study on reinforcement CFRP cloth

针对古、旧原木构件加固,对采用CFRP布环箍加固的木结构受压构件的抗压性能进行了对比试验,初步研究了CFRP布加固不同长细比旧木柱的效果。试验结果表明:CFRP布环箍约束旧木柱的膨胀变形,能够提高木柱的初始刚度,显著改善其延性,并能在一定程度上提高木柱的承载力(约5%~20%);传统木柱修复加固技术与CFRP布环箍约束作用相结合,可以大幅提高有缺陷木柱的抗压承载力,并显著改善其延性。

In this paper,the experiments of comparative wood structure by compressive hoop reinforcement have been carried out for the ancient timber structure reinforcement. The preliminary effect on CFRP reinforced with different slenderness ratio of old timber column has been obtained. The test results show that the swelling deformation of CFRP cloth hoop constraint old timber column can improve the initial stiffness and ductility. It also can improve the bearing capacity of the columns from 5% to 20% in a certain extent. The traditional wooden repair reinforcement technology and CFRP cloth hoop constraint combination can significantly improve the compressive capacity of the wood defects and the ductility.