摘要
为研究机场建设中冲击碾压对不均匀软弱地基的处理效果,在试验区进行了现场冲击碾压试验,通过观测冲击碾压在试验区不同位置产生的沉降量、碾压后场地的回弹模量值分析冲击碾压改善软弱地基不均匀性的效果;通过对比处理前后试验区内的静力触探与标准贯入试验结果分析其对软弱地基的加固效果。研究结果表明,采用冲击碾压结合碎石垫层处理技术处理大面积软弱地基能够有效地消除地基的不均匀性,减小地基的差异沉降,同时可以使处理后地基具有足够的均匀刚度。
To study the effect of the uneven soft ground treatment with impaction and grind method in construction of airport runway,a field test was conducted. During the test the settlements and resilience modulus at different position were observed to study the effect of Impaction and Grind Method on the unevenness of soft ground. CPT and SPT test were conducted before and after the treatment to study the improvement of the soft soil ground. The result shows that the impact and grind method in combination with crush stone bed treatment can relieve the uneven settlement of soft ground efficiently and an enough stiffness of the ground can be obtained after the treatment.
出处
《地下空间与工程学报》
CSCD
2008年第2期310-315,共6页
Chinese Journal of Underground Space and Engineering
关键词
机场
冲击碾压
软弱地基
回弹模量
airport
Impaction and Grind Method
soft ground
modulus of resilience
