中文摘要：

研究纤维增强材料（FRP）锚杆与砂浆的黏结-滑移行为对岩土锚杆结构的拉拔性能、设计理论及工程应用具有重要的理论意义。通过对玻璃纤维增强材料（GFRP）锚杆与砂浆界面黏结性能的试验，获取锚杆内力分布规律及锚杆界面任一点的黏结应力与滑移的变化规律，提出组合函数界面模型用来描述GFRP界面的单峰值非线性位移软化特性，并通过ABAQUS的子程序FRIC对GFRP砂浆锚杆的拉拔试验进行数值模拟。结果表明：该界面模型能反映GFRP砂浆锚杆的极限抗剪强度、残余抗剪强度及界面的变刚度特性，模型参数物理意义明确。

英文摘要：

It is of important theoretical significance and practical value to research the bond behavior between FRP bolt and mortar for tensile performance, design theory and engineering application of bolt support structure. A number of pullout tests of GFRP bars to mortar were conducted for investigating the bond behavior. The experimental results of internal force distribution and average bond stress-slip relationship of FRP bars to mortar under direct pullout were analyzed. In addition, a new model was proposed and used to describe characteristics of single peak and nonlinear displacement softening for the interface between the GFRP bolt and mortar. The proposed model was programmed into FRIC subroutine of ABAQUS. The results showed that the interface model could reflect the ultimate shearing strength and residual shear strength and interface variable stiffness.