摘要
本文在系统总结和分析广东省数起公路软基病害处治工程实例的基础上,提出了一种基于裂缝调查和监测数据分析的软土路基稳定性综合判别方法。提出了变形裂缝、临滑裂缝、滑动裂缝以及滑塌裂缝等概念及判别方法。基于注浆量和侧向挤出量,提出了适用于注浆加固工程的路基稳定性判别方法,经工程验证该方法的实用性较好。当采用打入桩等具有挤土效应的方法处理软基时,也可以采用该法判别地基的稳定性。概括和提出了基于沉降、侧向位移、孔隙水压力、注浆量等监测数据的"视不排水软基稳定性判别法"。将裂缝调查法和"视不排水软基稳定性判别法"综合应用,可以较快速和准确地判断软土路基所处的变形阶段和稳定状况。
On account of systematic summary and analysis of dozens of highway soft soil foundation disease treatment works in Guangdong Province,the paper develops a comprehensive discriminating method of soft subgrade stability based on cracks survey and evaluation of monitoring data.The concepts and discriminating methods of deformation cracks,critically slippery cracks,sliding cracks and slump cracks are put forward.Based on the amount of grouting and lateral extrusion,a method suited for the subgrade sulbility discrimination in grouting reinforcement engineering is presented,which is proved to be practical and feasible by the engineering.This method can also be used to judge the stability of soft foundation when it is treated with squeezing soil effect.The paper summarizes and proposes "a quasi-undrained stability analysis method of soft soil foundation"based on settlement,lateral displacement,pore water pressure,grouting volume and other monitoring data.The stability and deformation characteristics can be estimated quickly and accurately by the combination of cracks survey and the proposed method.
作者
黄腾
高玉峰
Huang Teng;Gao Yufeng(CRCC Harbour & Channel Engineering Bureau Group Co.Ltd.,Zhuhai Guangdong 519070,China;Hohai University,Nanjing Jiangsu.210098,China)
出处
《铁道建筑技术》
2018年第12期9-14,109,共7页
Railway Construction Technology
基金
广东省交通运输厅科技项目(2011-02-013
2013-02-014)
关键词
路基
软土
裂缝
监测
稳定性
subgrade
soft soil
crack
monitoring
stability
作者简介
黄腾(1975-),男,教授级高级工程师,主要从事岩土工程方面的研究。
