Based on a slope located at the S214 Simao-Jiangcheng second class highway

the dynamic module of finite difference software FLAC3D is used to study the dynamic response of bolting shallow red clay slope under seismic loading. Based on the interaction and coordination of ground and supporting structure

a three-dimensional finite difference model which takes the damping and dynamic boundary into consideration is established. The dynamic response pattern of shallow red clay slope and the supporting effect of bolt under earthquake are analyzed. It is found that both the bolt axial force of each layer and the shear stress in mortar increase during earthquake. However

with variant increment in each layer of bolt axial force and uneven distribution along length direction

the axial force reaches maximum value at the junction of soil and bedrock. While the shear stress shows an overall increasing trend; and its peak value position approaches the slope surface. The minimum value positions of shear stress before and after earthquake are both located at the junction of soil and bedrock. Anchors’ support outstandingly constrains the deformation of slope and increases the ductility of ground under earthquake

which renders good aseismic behavior. Moreover

permanent displacement of slope is generated after the earthquake; and the seismic acceleration inside the slope increases with the raise of vertical elevation. While the platform setting weakens the increasing trend of slope surface acceleration

contributes in alleviating seismic effects. The research has certain reference value for seismic design and dynamic analysis of slope supported by anchor bolts.