Influence of the relative density and K0 effects in the cyclic response of Ottawa F-65 sand - cyclic Torsional Hollow-Cylinder shear tests for LEAP-ASIA-2019
Ruben R. Vargas, Kyohei Ueda, Kazuaki Uemura
Abstract
The Liquefaction Experiments and Analysis Project (LEAP) is a joint international project that pursues the verification, validation and uncertainty quantification of numerical liquefaction models. As part of this project, twenty-three Hollow Cylinder Cyclic Torsional Shear Tests were conducted in the installations of the Disaster Prevention Research Institute at Kyoto University, focusing on the influence of the relative density and the K0 effects in the cyclic response of Ottawa F-65 Sand. The results are intended to compose part of a reliable database in the development of current and future V&V processes of liquefaction models. The paper presents the characteristics of the model preparation, test development, and a brief discussion of (1) the influence of the relative density and the K0 effects, (2) the volumetric strain due to post-cyclic reconsolidation, and (3) the repeatability and consistency of the tests.