公路湿陷性黄土地基重夯法处治与分析

Analysis on Heavy Tamping Treatment for Highway Collapsible Loess Foundation

阐述了湿陷性黄土地基重夯加固机理,结合岢临高速公路地基处治案例,通过试夯确定施工参数,并通过试验检测地基重夯效果。在施工现场取样检测地基土重夯前后各指标的变化情况,开展试验检测夯沉量、压实度,并开展沉降监测确定施工后地基的沉降情况,分析试验结果得出重夯处治后地基土承载力明显提高,有效控制了沉降变形。

This paper expounded the heavy tamping mechanism of collapsible loess. Combined with the foundation treatment case of Kelin Expressway, the construction parameter was determined by trial tamping, and the effects of heavy tamping of the foundation was tested and checked. Selecting samples at the construction site to study the variation of each index of foundation soil before and after the heavy tamping, tests were performed to determine the ramming volume and compaction degree, and settlement monitoring was carried out to determine the foundation settlement after the construction. The result analysis showed that the bearing capacity of the heavy tamping treated foundation soil significantly increased, and the settlement deformation was effectively controlled.