高强预应力管桩在悬臂式挡土墙工程中的计算分析

Calculation and Analysis of High-Strength Prestressed Tube-Pipe in Cantilever Retaining Wall Engineering

以某悬臂式挡土墙工程为例,结合现场工程地质条件,采用了高强预应力管桩作为悬臂式挡土墙基础,形成了桩基托梁挡土墙这一种新型支挡结构,通过验算挡墙承载力、桩基水平承载力、桩基竖向承载力及挡土墙稳定性,得出桩基托梁挡土墙的承载力主要由其水平承载力控制,设计要验算其竖向承载力及水平承载力是否同时满足要求,应当将挡土墙和桩基托梁作为一个整体进行稳定性验算。本文通过对桩基托梁挡土墙的分析计算,为类似挡土墙工程项目提供了借鉴和参考。

Taking a cantilever retaining wall project as an example,combined with on-site engineering geological conditions,highstrength prestressed tube-pipe were used as the foundation of the cantilever retaining wall,forming a new type of retaining structure called pile foundation supporting beam retaining wall.Through checking the bearing capacity of the retaining wall,horizontal bearing capacity of the pile foundation,vertical bearing capacity of the pile foundation,and stability of the retaining wall,it was found that the bearing capacity of the pile foundation supporting beam retaining wall is mainly controlled by its horizontal bearing capacity,The design should verify whether both the vertical and horizontal bearing capacities meet the requirements,and the stability of the retaining wall and pile foundation support beam should be checked as a whole.Provides reference and analysis for similar retaining wall engineering projects through the analysis and calculation of pile foundation support beam retaining walls.