2011 Volume 67 Issue 1 Pages 130-144
The effect of partial soil improvement by the Chemical Grouting Method (called as CGM) is investigated for liquefiable runway ground in this paper. Especially, the partial soil improvement by CGM is proposed as a countermeasure against lateral flow of liquefiable runway ground. The effect of the countermeasure is verified by the laboratory experiment, in which the behavior of lateral flow is simply assumed as a static sliding problem, under 1G gravitation condition. In addition, a parametric study conducted for a model runway ground in numerical analysis. As a result of analytical examination, it is clarified that the inclination of pavement side have significant influence on occurrence of lateral flow. Moreover, the lateral flow can be mostly restrained using partial soil improvement, and it can be prevented completely by making on the both ends of an improvement layer to non-liquefiable layer.
