中文摘要：

基于界面黏滑本构模型假定,推导土层锚杆锚固力学微分方程及其解析解,给出土层缺陷锚杆锚固迭代计算方法与求解步骤,并结合已有锚杆拉拔试验资料,通过计算对比分析,验证该方法的可行性;对缺陷锚杆锚固特性进行分析,同时,对土层缺陷锚杆分别从空腔大小、空腔位置以及拉拔荷载3方面进行锚固特性的参数影响分析。结果表明：空腔的存在对缺陷锚杆前段锚固段影响较大,而后段则影响较小;土层缺陷锚杆锚固特性分析及其参数影响规律研究可为锚杆锚固质量后评价提供理论指导。

英文摘要：

Based on the assumption of stick-slip constitutive model of interface, the differential equation of soil anchorage mechanics and analytic solutions were presented, the iterative computational method and calculation procedure were given for soil imperfect anchorage system, and with the anchor pullout test data, the feasibility of method was verified by calculation and contrastive analysis. The anchorage characteristics of imperfect anchor were analyzed. In addition, the anchorage characteristics of soil imperfect anchor were analyzed under the influence of different parameters, which comprises cavity sizes, cavity positions and pullout loadings. The results show that the cavity has greater impact on the front anchorage section, and little effect on the posterior anchorage segment. The study of anchorage characteristics and parameter influence regulations of soil imperfect anchor can provide theoretical guidance for post-evaluation of anchor quality.