基于均匀土层的剪切梁理论，得到了边坡在水平地震作用下的动力响应。根据土钉本身质量很小，将土钉受到的惯性力忽略。其在压力注浆后形成“狼牙棒”与周围土体一起运动，运动受周围土体控制，其破坏取决于土钉所能承受的变形大小，而并非惯性力，因此将土钉简化为一维无质量的弹性杆，通过变形协调和虎克定律得到了土钉轴力地震响应。将提出的计算方法应用于一个工程案例，进行了地震动力分析与抗震验算。为了验证提出的计算方法的合理性，通过ADINA软件进行了对比分析，结果表明这种计算方法对土质较均匀的边坡动力抗震设计和分析是安全、可靠、合理的。这种计算方法给土钉支护结构的地震分析及抗震设计提供了理论依据。

Based on shear beam theory, the seismic response of the slope is obtained under the condition of horizontal earthquake excitation. Because mass of soil nailing is small compared to one of soil, inertia force can be ignored. The movement of soil nailing and soil is nearly in phase and damage of soil nailing depends on the size of the deformation to withstand but not inertia force, so the soil nailing is simplified for one dimension elastic rod without mass. The seismic response of soil nailing is derived through compatibility of deformation and Hooke’s law. The method is applied to a project case to carry out seismic analysis and design. Using finite element software (ADINA) to verify the proposal method the results show that the design and the analysis are safe and credible. The calculation method provides theoretical basis for earthquake analysis and seismic design of soil nailing supporting structure.