Calculation Method of Arc-arranged Occluding Pile Considering Arch Effect

The occluding pile has excellent anti-seepage and water-sealing performance, and the arc-supporting structure has a strong anti-pressure ability and good integrity.The combination of the two will become a new economical and practical support system.Based on structural mechanics, this paper equates the arch effect of arc-arranged occluding piles support structure and the passive soil resistance to spring and presents a simplified calculation method.Taking the foundation pit of the No.14 arch abutment of the Minjiang grand bridge as a background, this method is used to calculate the deformation of piles and compared with the monitoring data, numerical simulation, and standard method.The feasibility and calculation accuracy of this method are discussed.The horizontal displacements of the piles calculated using this method and the monitoring results show the trend of the cantilever pile deformation and the difference of the displacement of the top of the pile is small, which shows the effectiveness and practicability of this method in the design and calculation of arc-shaped occluded pile and can provide a design basis for related engineering.