Abstract
A shaking table test for a bridge foundation reinforced by anti-slide piles on a silty clay landslide model with an inclined interlayer was performed. The deformation characteristics of the bridge foundation piles and anti-slide piles were analyzed in different loading conditions. The dynamic response law of a silty clay landslide with an inclined interlayer was summarized. The spacing between the rear anti-slide piles and bridge foundation should be reasonably controlled according to the seismic fortification requirements, to avoid the two peaks in the forced deformation of the bridge foundation piles. The “blocking effect” of the bridge foundation piles reduced the deformation of the forward anti-slide piles. The stress-strain response of silty clay was intensified as the vibration wave field appeared on the slope. Since the vibration intensified, the thrust distribution of the landslide underwent a process of shifting from triangle to inverted trapezoid, the difference in the acceleration response between the bearing platform and silty clay landslide tended to decrease, and the spectrum amplitude near the natural vibration frequency increased. The rear anti-slide piles were able to slow down the shear deformation of the soil in front of the piles and avoid excessive acceleration response of the bridge foundation piles.
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This research was supported by the Sichuan Science and Technology Program (Grant No. 2023NSFSC0894) and Major Project of the Science and Technology Research and Development Program of the Ministry of Railways of China (Grant No. Z2012-061).
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Supported by: Sichuan Science and Technology Program under Grant No. 2023NSFSC0894, Major Project of the Science and Technology Research and Development Program of the Ministry of Railways of China under Grant No. Z2012-061
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Lei, D., Xiao, H., Ran, J. et al. Experimental study on seismic reinforcement of bridge foundation on silty clay landslide with inclined interlayer. Earthq. Eng. Eng. Vib. 23, 193–207 (2024). https://doi.org/10.1007/s11803-024-2233-0
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DOI: https://doi.org/10.1007/s11803-024-2233-0