Remediation methods against liquefaction which can be applied to existing structures

Abstract

Many kinds of remediation methods against liquefaction have been developed and applied to structures since the 1964 Niigata earthquake. However, only a few remediation methods which can be applied to existing structures have been developed. A huge number of old structures in the world have not been treated to resist liquefaction. Recently, several new techniques to treat existing structures have been developed. In this paper, restrictions to be considered in remediation techniques for existing structures are discussed first. Then recent remediation methods for existing raft foundations, pile foundations, embankments, sea walls, and buried structures are introduced together with the principle of remediation. Remediation methods for liquefaction-induced flow are also introduced. © 2007 Springer.