2022 Volume 78 Issue 3 Pages 235-250
Ground improved by penetration grouting method to prevent liquefaction of sandy ground has spatial variability in shear strength compared to naturally deposited ground due to non-uniformity of chemical penetration and spatial variability of soil properties. In this paper, the deformation behavior due to the dissipation of excess pore water pressure after liquefaction is stochastically and statistically investigated for a runway of an airport which was improved by penetration grouting method, by expressing the spatial variability of the shear strength by random field theory and modeling the existence of liquefaction of the ground during an earthquake. A novel performance-based evaluation method for bearing capacity and flatness is proposed, which are the performance index values required for runways after an earthquake by using the obtained results.
