Centrifugal vibration model test of prestressed anchored slope subjected to earthquake load
As an important support method,prestressed anchor cable is widely used in slope reinforcement.However,the re-sponse mechanism of the anchored rock slope as well as the stress and deformation law of the anchor cable under seismic load are still unclear.In this paper,the key technologies of the centrifugal vibration model test were introduced,which included model simi-larity design,model manufacture,and application of seismic load.Based on the rocky inlet slope at the spillway tunnel of Zipingpu Reservoir,a centrifugal model test of the anchored rock slope under action of the simple harmonic seismic wave was performed.The test results were analyzed,and the main influencing factors of this trial were discussed.The results show that the prestressed anchor cable plays a strong role in passive support.The closer the prestressed anchor cable is to the sliding surface,the more obvi-ously the stress and strain response appears.There is also a significant change in the vertical displacement of the slope and the stress and strain response of the anchor cable as the seismic intensity changes.This study may provide an important reference for centrifugal vibration tests in the future.
prestressed anchor cablerocky slopeseismic loadcentrifugal vibration test
国家科技期刊平台
NSTL
万方数据
维普
