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通过对采用玄武岩纤维布加固的15根杨木矩形长柱进行偏压试验,研究不同粘贴方式、不同层数玄武岩纤维布加固长柱的承载性能。试验结果表明:与未加固杨木矩形长柱比较,采用玄武岩纤维布间隔贴1层、2层及玄武岩纤维布满贴1层、2层加固木柱时,木柱极限承载力分别提高8.70%、19.56%、23.91%、30.43%,纵向粘贴纤维布能够有效提高木柱的抗弯承载力。木柱破坏形式多为受压区内木材顺纹方向木纤维的压屈,玄武岩纤维布能较好地约束木柱横向变形,进而产生受拉区纤维拉断,加固后的试件应变增加幅度较大。
By carrying out the bias tests on 15 long-legged poplar columns reinforced with basalt fiber cloth, the bearing capacity of long columns reinforced with basalt fiber cloth with different layers and different layers was studied. The results show that the ultimate load carrying capacity of wood columns is increased by 8.70% when using basalt fiber cloth with 1 layer, 2 layers and basalt fiber covered with 1 layer and 2 layers of reinforced wood columns compared with the unreinforced rectangular column of poplar wood. , 19.56%, 23.91% and 30.43%, respectively. Longitudinal pasting of fiber cloth can effectively improve the flexural capacity of wood columns. Most of the wood column failure forms are the buckling of the wood along the grain direction in the compression zone. The basalt fiber cloth can restrain the lateral deformation of the wood column well, which leads to the tensile strain of the tensile fiber in the tension zone and the increase of strain after reinforcement Larger.