STUDY ON LIQUEFACTION-INDUCED ROAD SUBSIDENCE AND HAZARD MAP IN MIHAMA WORD, CHIBA CITY

Abstract

On March 11th, 2011 Off the Pacific Coast of Tohoku Earthquake caused severe liquefaction damage over the long stretch of reclaimed lands along the coast of the Tokyo Bay. After the earthquake, Kiyota laboratory have investigated the relationship between liquefaction potential and liquefaction-induced road subsidence, and developed a new liquefaction hazard map based on the relation. The present paper employs a similar approach to the previous study and conduct a case study in Chiba City where severe liquefaction damage occurred in the 2011 earthquake.