Liquefaction of Subsurface Soils During Earthquakes
Department of Civil Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
The following article summarizes the results of studies on liquefaction of sandy ground during earthquakes, which have been conducted by the author over the past few years. Case history studies on this subject made for the major earthquakes in Japan are described first, and then three soil profiles most prone to liquefaction are suggested. Principles and methods of laboratory studies on liquefaction are briefly introduced, and typical examples of recent test data are shown. In Section 3, methods and techniques of field investigations are described in detail and. their interpretation in relation to liquefaction prediction is suggested. Finally, a predictive method is suggested in which the laboratory test data are incorporated into analyses using the wave propagation method.