Abstract
The anti-liquefaction ground improved by cement-mixing and permeable-grouting shows the spatial variability in soil properties such as shear modulus and liquefaction strength resulting from the spatial variability of soil profile in original ground, the non-uniformities of mixing and grouting, etc. It is expected that liquefaction resistance and nonlinear seismic response of anti-liquefaction ground are affected by the spatial variability, however, the liquefaction properties of anti-liquefaction ground with a large spatial variability in soil properties have not been fully clarified. In order to investigate effects of percent defective of ground improvement, a risk-based method was proposed to assess the liquefaction-induced damage against the anti-liquefaction ground.
