Research on the Displacement Monitoring and Prevention Techniques of Bridge Foundation on Landslide

The pile and abutment stability introduce a design challenge when highway or railway bridge is constructed within a landslide in mountainous regions or hilly land. Aiming at the deformation of bridge foundation caused by the movement of the landslide, the displacement feature of the pile and the abutment were tracked and measured by setting measuring spots at the bridge pier. Based on the analysis of observed data and theoretical analysis, the paper proposes a combination treatment using prestressed anchor cable and prestressed slide resistant pile, and the method for calculating anchoring force is given. Length of anchor cable and prestress force value are designed base on the results of field testing. Practical application shows that the method is effective and can be referenced in engineering practice.