人工填土上某二级挡土墙破坏机理分析及加固处理

Failure Mechanism Analysis and Reinforcement of Two-Stage Retaining Wall on Artificial Filling Soil Field

某人工填土场地北侧采用二级挡土墙进行护坡,在场地上修建的多幢建筑物完工之后,施工方发现一级片石挡土墙、二级混凝土轻型挡墙及其承台梁产生多条裂缝。后经现场踏勘、设计图纸分析,对挡墙提出了护坡加固方案,并采用经典土压力理论对桩、墙进行理论分析计算。研究表明:加固后,桩、承台梁及挡土墙作为一个整体,其抗滑移能力,抗剪能力及抗倾覆能力均满足要求。经过一年的使用情况看,当时提出的简易护坡方案是合理的,达到了经济、实用的目的。

Two-stage retaining wall was adopted for an artificial filling soil field to protect slope on the north,multiple cracks were found by the construction organization on the slab stone retaining wall,secondary concrete wall and its ground beam after a few buildings were built on the soil field.The revetment reinforcing scheme was put forward after the scene inspection as well as design drawings analysis of retaining wall.The pressure of piles and walls is analyzed and calculated by using classical theory,which indicates that the sliding resistance ability,the shear capacity and the resistive overturning ability of piles,ground beam and retaining wall as a whole can satisfy requirements after reinforcement.The simple revetment scheme is reasonable,economic and practical after used for one year.