中文摘要：

通过全螺纹GFRP锚杆的改进拉拔试验，测试与分析全螺纹GFRP锚杆在锚固工程中与岩体的黏结性能，并推导出GFRP锚杆的锚固承载力设计公式，给出GFRP锚杆锚固设计各参数的确定方法，以便于全螺纹GFRP锚杆在工程中的应用。试验测试项目包括砂浆强度、锚固长度、锚杆直径等对于全螺纹GFRP锚杆锚固力的影响，以及GFRP锚杆杆体黏结应力分布。测试发现：锚固力随砂浆强度、锚固长度、锚杆直径的增大而增大；黏结强度则随砂浆强度等级增大，但随锚固长度和锚杆直径的增大而减小。分析认为：采用全螺纹GFRP锚杆进行工程锚固时，全螺纹GFRP锚杆的直径可取12-32mm，锚固长度应大于20倍的锚杆直径，锚固砂浆的强度等级为M15以上。

英文摘要：

Through the experiments on the improved pull-out tests of full-thread glass fiber reinforced plastic （GFRP） anchor bolts, the bonding behavior between the bolts and rock mass is studied. By studying the anchorage force of different GFRP anchor bolts, the parameters for application of GFRP anchor bolts to engineering practice are proposed. The testing results indicate that the anchorage force of the bolts increases with the increases of bolt diameter, anchorage length and mortar strength; the bonding strength of bolts increases with the increase of mortar strength, but decreases with the increases of bonding length and bolt diameter. And the results are explained with the bonding stress distribution of the GFRP anchor bolts. By the results, several conclusions are drawn： （1） the recommend diameter of the GFRP anchor bolts in engineering is 12 - 32 mm; （2） the anchorage length of the GFRP bolt should be larger than 20 times of its diameter; and （3） the compressive strength of the mortar used as anchor agent should be more than 15 MPa.