Study on dynamic response distribution of excavated highway slope under dynamic action

In order to study the dynamic response distribution law of highway foundation pit slope under seismic dynamics, the dynamic response distribution law of cutting slope at different grading heights was compared and studied, and the dynamic instability model under gravity instability and seismic disturbance was established by using UDEC700 software, and the simulation calculation was carried out. The difference between static instability and dynamic instability of fractured rock slope is compared and analyzed, and the post-earthquake stress is greater than that before the earthquake. Under the action of power, the velocity at the top of the slope is greater than the velocity at the bottom of the slope, the velocity outside the upper platform is greater than the velocity inside, and the velocity inside the lower platform is greater than the velocity outside. This provides a new perspective for understanding the dynamic response of highway foundation pit slope under seismic dynamics.