Numerical Simulation of Reinforcement of Multi-row Composite Piles in Large Bedding Rock Landslides
In order to explore the reasonable support and protection system of large-scale bedding rock landslides and ensure the stability of bedding rock slopes,based on a bedding landslide in Anhui Province,based on the numerical simulation method,the stress characteristics and retaining protection effect of the combined support system of"single row pile(or anchor pile)+h-type anti-slide pile"in bedding rock landslide are simulated and analyzed.Results show that the support of the free surface at the lower part of the landslide is related to the h-type pile in the middle and upper part of the landslide,and after the anchor cable is added to the lower single row pile,the displacement of the top and sliding surface of the h-type pile are obviously reduced,and the maximum bending moment and shear force also have a downward trend.The connection mode between the coupling beam of the h-type pile and the rear row pile has a certain influence on the supporting effect of the anti-slide pile,and the fixed connection effect is stronger than that of the hinged connection.The influence of the fixed/hinged connection mode of the coupling beam on the bending moment and shear force of the h-type pile supporting structure is much smaller than that of the single row pile with or without anchor cable on the bending moment and shear force of the h-type pile supporting structure;the combined support system of"single row piles(or anchor piles)+h-type anti-slide piles"can effectively control the deformation of the slope,and ensure that the bedding landslide is in a stable state after retaining.The research fingings can provide some theoretical references for the support management of such rock edge(sliding)slope.
bedding rock landslideanti-slide pileanchor cableh-type anti-slide pilenumerical simulation
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