PERFORMANCE OF BUILDING FOUNDATION WITH GRID-FORM GROUND IMPROVEMENT DURING THE 2011 TOHOKU PACIFIC EARTHQUAKE

Abstract

In this paper, two building foundations improved by the grid-form ground improvement method are introduced. The field investigation results of the ground around the building after the 2011 earthquake are presented. The effect of the liquefaction prevention of the grid-form ground improvement ground is discussed based on the dynamic nonlinear analysis for foundation soil layers with an actual acceleration record. Comparing the field investigation result with the simulation analysis, it is concluded that the grid-form ground improvement prevented the liquefaction of the original soil surrounded by the grid-form walls during the 2011 earthquake.