论文部分内容阅读
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。
Studying the bond-slip behavior between fiber reinforced material (FRP) anchor and mortar has important theoretical significance for the drawing performance, design theory and engineering application of rock bolt and anchor structure. Through the experiment on the bond property of the glass fiber reinforced plastic (GFRP) anchor and mortar interface, the internal force distribution of anchor and the variation of bond stress and slippage at any point of the anchor interface were obtained. The interface function of composite function was proposed to describe the properties of GFRP Single peak non-linear displacement softening characteristics of the interface, and through the ABAQUS subroutine FRIC numerical simulation GFRP mortar anchor pull test. The results show that the interface model can reflect the ultimate shear strength, residual shear strength and interface stiffness of GFRP mortar anchor. The physical meaning of model parameters is clear.