高速公路路基砂土液化处理研究

Research on Treatment of Sand Liquefaction on Highway Subgrade

在高速公路工程建设中,砂土液化是一种较为常见的不良路基类型,会带来严重的危害。如果没有对砂土液化区域进行精准预测与处理,一旦发生地震,会带来灾难性破坏。基于此,分析了路基砂土液化机理(包括形成机理、类型),进而提出了冲击碾压技术、振动沉管挤密碎石桩技术、强夯施工技术等常见的路基砂土液化处理方法,并结合某工程案例探究路基砂土液化的施工方案(包括项目概况介绍、施工准备、施工工艺、注意事项)。结果表明:砂土液化处理手段能够有效提高高速公路路基的稳定性,降低砂土液化的风险,为保障高速公路的安全与畅通提供了重要的技术支持。

In the construction of highway engineering,sand liquefaction is a common type of poor roadbed,which can cause serious harm.If there is no precise prediction and processing of the liquefaction area of sand,once an earthquake occurs,it will bring catastrophic damage.Based on this,this article analyzes the liquefaction mechanism of foundation sand(including the formation mechanism and types),and proposes common treatment methods for the liquefaction of subgrade sand,including Impact Rolling technology,Vibration Sinking Tube Compaction Gravel Pile technology,and Dynamic Compaction construction technology.Combined with a certain engineering case,the construction plan for liquefaction of subgrade sand is explored(including project overview introduction,construction preparation,construction technology,and precautions).The results indicate that sand liquefaction treat-ment methods can effectively improve the stability of highway subgrade,reduce the risk of sand liquefaction,and provide important technical support for ensuring the safety and smoothness of highways.