砂砾桩在公路软土地基处理中的试验研究

Soft soil foundation's characteristics, such as low bearing capacity, have great influence on the normal safety use of the highway. T As a result, the general construction on soft soil foundation requires reinforcement of soft soil foundation. This article is based on the principle of gravel pile treatment of soft soil foundation, combined with the site engineering geological, hydro geological characteristics and construction conditions of the actual project, it suits measures to local conditions to put forward the method to treat the engineering foundation by using the sand-gravel pile. In addition, through some in-situ tests such as the loading test, dynamic penetration test, etc, to check the efficiency of the treatment. Site tests' results show that, the efficiency through the sand-gravel pile treatment on this soft soil foundation is obvious, it can achieve the purpose of increasing foundation capability and reducing the foundation deformation. This research's results provide certain engineering test experience in similar conditions of soft soil foundation treatment.