拉挤型GFRP方管抗压性能试验研究

玻璃纤维增强复合材料(GFRP)具有比重小,强度高,造价低廉等优点,被广泛应用于各工程结构。本文通过对12根不同宽厚比的拉挤型GFRP试件进行轴心受压试验,分析试件的破坏形式和极限承载力。结果表明:试件在破坏前基本遵循线弹性,单纯增大构件横截面积不能有效的提高拉挤型GFRP方管的极限承载力;宽厚比变化会对破坏形式和承载力产生很大影响。

Glass fiber reinforced composite material(GFRP)has the advantages of small specific gravity,high strength and low cost,which is widely used in various engineering structures.In this paper,12 pultruded GFRP specimens with different width-thickness ratios are subjected to axial compression tests to analyze the destruction form and ultimate bearing capacity of the specimens.The results show that the specimen basically follows linear elasticity before destruction,and simply increasing the cross-sectional area of the member cannot effectively improve the ultimate bearing capacity of the pultruded GFRP square tube;the changes in the width-thickness ratio will have a great impact on the destruction form and bearing capacity.