Study on reinforcing effect of arc row anti-slide piles with different forms in slope

Aiming at the disadvantage of the existing cantilever beam anti-slide pile, taking a slope project in Jiuzhaigou as the background, using the finite element method and strength reduction method, the stability safety factor of the slope under different forms were obtained, so as to study the reinforcement effect of the arc row piles with arc coupling beam on the slope under different structural forms. The results show that compared with linear anti-slide piles, arc row piles with arc coupling beam on pile top can effectively prevent the slope from sliding, reduce the development of plastic zone, and effectively control the displacement and deformation of anti-slide piles themselves. What’s more, it also can effectively reduce the plastic zone and shear strain increment of the slope, and effectively protect the stability of the slope. Connecting the coupling beam to the top of the anti-slide pile can effectively strengthen the interaction between the anti-slide piles, improve the stiffness of the whole structure and restrain the overall deformation of the structure. Increasing the concrete grade of cantilever beam anti-slide piles structure can effectively reinforce the slope. When the concrete grade is increased to a certain extent, the increase rate in the reinforcement effect of the slope is weakened. With the increase of rise-span ratio, the safety factor of slope increases gradually, which indicates that increasing the rise-span ratio of connecting beams can effectively limit the sliding of slope. For different anti-slide pile lengths, increasing the length of the anti-slide pile can effectively limit the slope slip within a certain range, but as the length continues to increase, the limiting effect is gradually weakened.