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中文摘要：
岩石锚杆已经在岩体边坡和隧道开挖加固中得到了成功的应用，但锚杆锚固段内的具体受力分析仍然没有得到清楚的解决．从锚固段受力连续性理论出发，采用界面剪应力重分布假设，定义出剪切剐度的软化曲线，并利用ABAQUS软件自带的弹簧模型，对典型拉拔试验进行了数值分析，表明多种因素通过改变砂浆层的尺寸和强度对锚杆最大拉拔荷载产生影响．与实际试验结果相比，数值解和实测值有相当的一致性．
英文摘要：
The rock bolt is successfully applied to the reinforcement of rock slope and tunnel excavation. To analyze the specific stress in the sector of the bolt, by departuring from the continuity theory of the force in the anchoring segments, the softening curve of the shear stiffness is defined based on the assumptions of interracial shear stress redistribution. Through the ABAQUS software with spring model, a numerical model of a typical pull-out test is built whose results are compared with actual test ones, which shows that the maximum pull-out load is influenced by many factors which change the dimension and strength of the grout. The above results also confirm the consistency between the simulation results and actual ones.
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