Study On Reinforcement Mechanism And Calculation Method Of Stabilizing Piles Connected With Beams In Landslide Control

Stabilizing pile is one of the main engineering measures in landslide control. This paper proposes a new type of anti-slide structure which is called stabilizing piles connected with beams. This structure improves the stability of landslide by connecting the beam and adjacent stabilizing piles, which is available in landslide and some slope projects. Depending on a typical slope project in expressway from Guangyuan to Bazhong, this paper explores the reinforcement mechanism and calculation method through Theoretical analysis and numerical simulation. The main research contents and results are as follows:(1) This paper puts forward the reinforcement mechanism of this structure and builds mechanical analytic model. This new structure is divided into loading segment and anchoring segment. We can view loading segment as plane rigid frame structure and derive the calculation formula of internal stress. Anchoring segment is calculated by elastic foundation beam method.(2) The function of the beam and structure characteristics are analyzed. Pile top produce the counter bending moment because of the beam. The beam makes the whole structure work cooperatively and reduces the bending moment.(3) Influence rule of internal force is related to the length of the beam. The counter bending moment of pile top increases with the increase of the length, the bending moment of pile bottom increases a little. The longer the beam is, the deeper the point of contraflexure is. The length of the beam has a little influence in anchoring segment(4) Building the model about a typical slope project in expressway from Guangyuan to Bazhong. We can verify the accuracy of theoretical formula by comparing the numerical simulation results and theoretical results, The longer the beam, the smaller the factor of safety is.This paper puts forward the calculating analysis method of a new structure of stabilizing piles, which provides guidelines and reference to landslide and some slope projects.