Abstract
A simplified procedure for estimating the maximum shear stress in the ground during earthquakes was proposed. In the procedure, the same parameters as conventional method and supplemental parameter SI were used and no precise parameters such as stiffness of the ground or depth of the base ground was necessary. In order to clarify the validity of the procedure, maximum shear stress ratios and liquefaction potentials were estimated for actual ground profiles of Port Island in Kobe-city, Akune-city and Sendai-city in Kagoshima-prefecture by using accelerograms recorded at the surface of each locations, and the results were compared with that of the conventional method.
