2023 Volume 79 Issue 13 Article ID: 22-13012
Various equations have been proposed to evaluate shear modulus as a function of pore ratio and effective confining pressure for seismic response analysis, but most of them have been applied only to sand and clay with uniform grain size. In this study, we attempted to evaluate the shear modulus of local soils with varying fine-grain content (0-75%), which are presumed to have been liquefied by the 2018 Sulawesi earthquake, by conducting bender element tests on specimens of local soils with high non-plastic fine-grain content, and calculating shear modulus. The shear modulus of soil with a wide range of fine-grain content was evaluated using the equivalent skeletal pore ratio, which considers that a part of the fine-grain content contributes to the skeletal structure of the coarse-grain content, instead of the normal pore ratio.
