ABSTRACT
The authors studied the seismic behavior of the ground at Kobe Port Island during the 1995 Hyogo-ken Nanbu Earthquake. In this paper we focused on the seismic behavior of the alluvial clay layer and conducted cyclic simple shear tests using the stress wave inferred from array records. The specimen used in this study was the clay sampled in Rokko Island near Kobe Port Island. The clay was from the same clay layer that was at Kobe Port Island, but it was not as consolidated as the clay at Kobe Port Island. After consolidation with several confining pressure levels, we conducted a dynamic simple shear test under the same stress rates as the actual earthquake. We compared the shear strain time histories inferred from array records with those from simple shear test. The strain time history obtained from simple shear test gave good comparison to that obtained from array records.
