道路工程工后沉降影响因素及处理研究

Study on the Influencing Factors and Treatment of Post-work Settlement in Road Project

道路工程是城市基础设施建设的关键组成部分,然而,工程完工后出现软土地基的沉降问题会对道路的安全性产生不利影响。以昆明地区某道路工程为例,采用钻探及原位测试手段,结合已有监测资料,旨在探讨道路工程工后沉降的影响因素以及有效的处理方法。结果发现,产生超限工后沉降的原因与填土层的密实度、硬壳层和软土层的厚度有关,采用高压旋喷桩配合长螺旋钻孔灌注桩进行加固处理,可以显著减少工程工后沉降,并延长道路的使用寿命。

Road engineering is a crucial component of urban infrastructure construction.However,the settlement problem of soft soil foundations after project completion can adversely affect road safety.Takes a road project in Kunming as an example and utilizes drilling and in-situ testing methods,combined with existing monitoring data,to explore the influencing factors and effective treatment methods for postconstruction settlement in road projects.It has been found that settlement after excessive construction work is related to the density of the fill layer,thickness of the hard layer,and the soft soil layer.The utilization of high-pressure jet grouting piles and long auger bored piles for reinforcement can significantly reduce post-construction settlement and extend the road's service life.