GFRP抗剪加固二次受力混凝土梁的纤维应变

The strain of GFRP in the shear strengthed RC beam subject to second load

对卸荷后的带有预制裂缝的9根钢筋混凝土外伸梁采用GFRP进行加固处理,并实施二次受力破坏试验.通过分析外贴纤维条带的应变发展和受力特点,总结了斜截面纤维应变分布规律以及相关因素对应变分布的影响.

A total of 9 concrete cantilever beams are fully unloaded and strengthened by GFRP.By analyzing the characteristic of strain development and internal force in exterior fiber strips,the distribution of strains in GFRP is summarized.