USE OF GEOSYNTHETICS TO IMPROVE SEISMIC PERFORMANCE OF EARTH STRUCTURES

Abstract

This paper summarizes in Japanese the contents of the Mercer Lecture 2011-2012. After reviewing seismic performance of earth structures based on case histories in Japan and relevant model test results, advantages of using geosynthetics in improving their seismic performance are demonstrated. As one of successful applications, geosynthetic-reinforced soil retaining walls are highlighted, focusing on several influential factors such as facing rigidity, arrangement and properties of reinforcements, and backfill and subsoil conditions. In addition, further applications of the reinforcement method using geosynthetics are introduced, which include combination with other reinforcement methods, application to bridge abutments and piers, and application to ballasted railway tracks.