强夯法结合抛石挤淤法在高速公路软基施工处理中的运用

Application of Dynamic Compaction Method Combined with Riprap and Silt Squeezing Method in Soft Foundation Construction Treatment of Expressway

在现阶段中,施工单位在进行高速公路工程施工过程中遇到黏性土、砂土、湿陷性黄土等软土路基时,可以选用多种软基处理方法处理软基,能够有效提高地基的承载能力,降低软土的压缩系数,提高高速公路的整体施工质量。根据大量工程实践经验可知,选用强夯法结合抛石挤淤法,能够较好地处理淤泥质土或者淤泥。以某一高速公路工程为例,首先阐述了几种软基处理方案,然后提出了强夯法结合抛石挤淤法施工方案,最后详细阐述了强夯法结合抛石挤淤法的施工技术要点,具有重要意义。

At this stage,when the construction unit encounters soft soil subgrade such as cohesive soil,sandy soil and collapsible loess during the construction of expressway project,it can choose a variety of soft foundation treatment methods to treat the soft foundation,which can effectively improve the bearing capacity of the foundation,reduce the compressibility coefficient of soft soil and improve the overall construction quality of expressway.According to a large number of engineering practice experience,the selection of dynamic compaction method combined with riprap compaction method can better deal with muddy soil or silt.Taking an expressway project as an example,this paper first expounds several soft foundation treatment schemes,then puts forward the construction scheme of dynamic compaction combined with riprap and silt squeezing method,and finally expounds the key points of construction technology of dynamic compaction combined with riprap and silt squeezing method in detail,which is of great significance.