GFRP加固钢筋混凝土梁界面剥离破坏分析模型

众所周知,纤维增强聚合物塑料(FRP)可以有效增强混凝土构件的强度和刚度,但是对于其界面剥离破坏却很少有人研究。因此,我们对采用GFRP加固的梁进行了理论分析,依据弯曲裂缝宽度临界值和非线性分析得出了一个半经验公式。此公式不仅可以用来预测相关试件的剥离破坏荷载,还可以用于GFRP加固钢筋混凝土梁的分析和设计。

GFRP Steel Reinforced Concrete Beam Interface Delaminating Damage Analysis Model

As we know,the fiber reinforced polymer plastic(FRP) may effectively improve strength and rigidity of concrete members,however little studies were paid to its damage of interface delaminating.This paper gives a theoretic analysis to GFRP reinforced beam,and concludes a semi-experience equation according to the critical value of curve crack width and non-linear analysis.This equation may not only be used to forecast delaminating damage load on relevant test samples,but also can be applied on GFRP steel reinforced concrete beam analysis and design.