Shaking table test for seismic performance of rock slope reinforced by C&S–R anchor cables

Abstract

To investigate the seismic reinforcement performance of compression and self-recovery (C&S–R) anchor cables, a series of shaking table comparison tests were conducted on rock slopes reinforced by two types of anchor cables: C&S–R anchor cables and conventional anchor cables, under different seismic intensities. During the tests, multiple accelerometers, displacement meters and strain gauges were synchronously arranged to monitor the strain of anchor cables and the dynamic response of the anchored slopes. The test results reveal that C&S–R anchor cables had better seismic performance. Compared to conventional anchor cables, C&S–R anchor cables had a peak axial strain reduction of approximately 23.0% and an increase in seismic intensity of 0.1g–0.2g. The final natural frequencies of the slope reinforced by C&S–R anchor cables and that of the slope reinforced by conventional anchor cables were 31.25 Hz and 26.1 Hz, respectively, confirming that C&S–R anchor cables reduce the internal damage of the anchored slopes during earthquakes. The results provide guidance and basis for the seismic optimization design of anchored slopes.