软土地基修建路基的固结过程及稳定性分析

Consolidation Process and Stability Analysis of Subgrade Built on Soft Soil Foundation

近年来,中国道路规划和建设穿越了各种复杂地层,其中软土地基上的路堤填筑施工的风险较高,风险主要是由于路基填筑后没有充分固结导致完工后出现路面开裂、沉降、坍塌等事故,类似事故给当地交通带来了诸多不利影响。论文以某市软土地基上的路基填筑工程为研究对象,设置有无排水线两种工况,深入研究了路堤填筑固结过程中的沉降变化,分析了软土地基中的超空隙水压发展及消散规律,计算了路堤结构安全系数等,以期为类似工程施工提供参考。

In recent years,China’s road planning and construction have passed through a variety of complex strata,among which the risk of embankment filling construction on soft soil foundation is higher,the risk is mainly due to the roadbed filling is not sufficiently consolidated after the completion of the road cracking,settlement,collapse and other accidents,similar accidents to the local traffic has brought many adverse effects.This paper taking the subgrade filling project on a city soft soil foundation as the research object,sets two conditions with or without drainage line,deeply studies the settlement changes during the process of embankment filling and consolidation,analyzes the development and dissipation law of excess void water pressure in soft soil foundation,calculates the safety factor of embankment structure,etc.,in order to provide reference for the construction of similar projects.