Geotechnical Engineering Journal of the SEAGS & AGSSEA ISSN 0046-5828
Vol. 49 No.2 June 2018
Settlement of River Dykes and Their Adjacent Residences on Soft Clay Deposits After the Tohoku-Pacific Ocean Earthquake in 2011
By K. Yasuhara, S. S. Yang, I. Horikawa and H. Yamane
ABSTRACT: Among the extensive infrastructure collapses which resulted from the cataclysmic earthquake that struck off the eastern coast of Japan on March 11, 2011, long-term settlement and deformation of clay deposits during the earthquakes has sometimes been overlooked. This paper describes a case history of post-earthquake settlement of clay deposits underlying river dykes and their adjacent residences. Particularly, an attempt is made to assess reactive countermeasures designed to mitigate damage from such settlement and deformation.
KEYWORDS: Land subsidence, Earthquake, Clay deposit, Countermeasure
