挖方与填方工程中双排桩的性质对比分析

Comparative Analysis of the Properties of Double-Row Piles in Excavation and Filling Engineering

基于有限元方法,探讨了参数相同情况下填方工程与挖方工程中双排桩的受力区别,计算结果表明:填方工程中的土体与桩体变形、前后排桩的轴力与弯矩均远远大于挖方工程的相应值,填方工程中连系梁的弯矩与剪力比挖方工程大。故填方工程中前排桩、后排桩与连系梁的截面尺寸与配筋比挖方工程相应值大,造价相对更高。

Based on the finite element method,this paper discusses the difference in force between double-row piles in embankment projects and excavation projects under the same parameters.The calculation results show that:the deformation of soil and piles,the axial force and bending moment of front and back piles in embankment projects are much greater than the corresponding values in excavation projects,and the bending moment and shear force of tie beams in embankment projects are greater than those in excavation projects.Therefore,the section size and reinforcement of the front piles,back piles and tie beams in embankment projects should be greater than the corresponding values in excavation projects,and the cost is relatively higher.