市政给排水管道地基承载能力分析及处治

Analysis and Treatment of Foundation Bearing Capacity of Municipal Water Supply and Drainage Pipeline

为确保城市给排水管道系统的稳定性和长期运行,文章围绕某园区给排水管道工程的地基承载能力不足问题,采用水泥土搅拌桩复合地基、预制微型管桩复合地基以及换填垫层法三种地基处理技术,通过对这三种技术的承载力特征值进行比较分析,结果显示所有方案均能满足设计要求的70 kN/m2承载力标准,其中换填垫层法因施工周期短、成本低而显著。本研究为地基处理方案的选择、后期沉降监测和预防提供了指导,为城市给排水系统的可持续发展提供了理论与实践支持。

In order to ensure the stability and long-term operation of the urban water supply and drainage pipeline system,this paper focuses on the problem of insufficient bearing capacity of the foundation of a water supply and drainage pipeline project in a park.Three kinds of foundation treatment technologies,cement soil mixing pile composite foundation,prefabricated micro pipe pile composite foundation and replacement cushion method,are adopted.Through the comparative analysis of the bearing capacity characteristic values of these three technologies,the results show that all the schemes can meet the design requirements of 70 kN/m2 bearing capacity standard.Among them,the replacement cushion method is remarkable because of its short construction period and low cost.This study provides guidance for the selection of foundation treatment schemes,post-settlement monitoring and prevention,and provides theoretical and practical support for the sustainable development of urban water supply and drainage systems.