Dynamic Torsional Shear Tests of Ottawa F-65 Sand for LEAP-ASIA-2019

The Liquefaction Experiments and Analysis Projects (LEAP) is an international collaborative project that aims to verify, validate, and quantify the uncertainty of numerical liquefaction models. Within this project, a series of hollow cylinder cyclic torsional shear tests were performed at the Disaster Prevention Research Institute facility at Kyoto University. These tests focused on examining how the relative density affects the cyclic response of Ottawa F-65 sand. The obtained results will contribute to a dependable database for the ongoing and future verification and validation processes of liquefaction models. This paper presents the details of the model preparation and test results, as well as a brief discussion on the influence of the relative density and the tests’ repeatability.