Liquefaction Remediation Near Existing Lifeline Structures.
Liquefaction Remediation Near Existing Lifeline
Andrus, R. D.; Chung, R. M.
Technical Report NCEER-96-0012; NCEER Task Number
Japan/U.S. Workshop on Earthquake Resistant Design of
Lifeline Facilities and Countermeasures Against Soil
Liquefaction, 6th Proceedings. National Center for
Earthquake Engineering Research. June 11-13, 1996,
Tokyo, Japan, National Center for Earthquake Engg. Res.,
NY, Hamada, M.; O'Rourke, T., Editor(s)(s), 457-476 pp,
earthquakes; building technology; ground improvement;
lifelines; permanent ground deformation; soil
Organized and systematic studies on the phenomenon of
liquefaction began after the 1964 Niigata earthquake.
Great progress has been made through research, much of
it conducted by researchers in Japan and U.S., to
develop a fundamental understanding of the mechanism of
liquefaction. A number of in-situ ground improvement
methods have been developed to reduce the vulnerability
of ground susceptible to liquefaction. Many of these
methods were developed empirically, and some are very
costly to implement. This paper examines the critical
factors that influence the effectiveness of five ground
improvement techniques which are most suitable for
remedial work near existing lifeline structures.
Expected cost of using these methods are given, even
though the cost data from cases examined is scarce.
Advantages and constraints of each of these methods are
presented. Eight case histories of remedial work near
existing lifeline structures are reviewed.