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Liquefaction Remediation Near Existing Lifeline Structures.

pdf icon Liquefaction Remediation Near Existing Lifeline Structures. (1107 K)
Andrus, R. D.; Chung, R. M.

Technical Report NCEER-96-0012; NCEER Task Number 95-2702A;

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, 1996.


earthquakes; building technology; ground improvement; lifelines; permanent ground deformation; soil liquefaction


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.