EVALUATION OF SHEAR MODULUS AND FINE CONTENTS OF LOCAL SOILS IN THE EARTHQUAKE AFFECTED AREA OF SULAWESI, INDONESIA IN 2018

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  • 2018年インドネシア・スラウェシ島地震の被災地における現地土のせん断弾性係数と細粒分の評価

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<p> 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.</p>

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