芳纶纤维增强塑料筋混凝土劈裂粘结应力的理论分析

A Theoretical Analysis on Splitting Failure in Concrete Reinforced with AFRP Rods

基于Tepfers受均匀内压力作用的厚壁圆筒力学模型和混凝土材料的软化性能，视芳纶纤维增强塑料筋为横观各向同性材料，同时考虑了芳纶纤维增强塑料筋与混凝土之间的摩擦力和机械咬合力，建立了芳纶纤维增强塑料筋与混凝土之间劈裂粘结应力的计算方法，其理论值与试验值符合较好。

A theoretical model for splitting stress based on the Tepfers model of thick - wall cylinder subjected to the internal pressure and fracture mechanics properties of concrete is presented. Assuming that the AFRP rods is transversely isotropic material, the mechanical interaction and the frictional action are taken into account. Good agreement is observed between the values using the experiments and the calculated results.