黄土地层市政道路改扩建路基沉降变形规律研究

Research on Subgrade Settlement and Deformation Laws of Reconstruction and Expansion of Municipal Roads in Loess Strata

在黄土地层中开展道路施工易引起不均匀沉降,造成路基开裂变形,给交通运输安全带来挑战。为此,针对黄土具有易湿陷沉降的问题,文章依托黄土地层市政道路改扩建工程,采用Flac 3D数值计算分析方法,研究了黄土地层市政道路改扩建施工过程中填土沉降变形规律,对地基沉降变形现象进行了分析总结,揭示黄土地层对道路改扩建的影响效应,为类似工程提供参考。

Road construction in loess strata is easy to cause uneven settlement,resulting in subgrade cracking and deformation,which poses challenges to transportation safety.Therefore,in view of the problem that loess is prone to collapsibility and settlement,this paper relies on the reconstruction and expansion project of municipal roads in loess strata,and adopts Flac 3D numerical calculation and analysis method to study the settlement and deformation laws of filling soil in the reconstruction and expansion process of municipal roads in loess strata.The settlement and deformation phenomenon of foundation is analyzed and summarized,and the influence of loess strata on road reconstruction and expansion is revealed,which provides references for similar projects.