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REPRODUCTION ANALYSIS OF SHAKE TABLE TEST ON LIQUEFIED GROUND AROUND UNDERGROUND STRUCTURE AND EVALUATION OF STRAIN HISTORY

Local subsidence damage on the airport taxiway right over the ground nearby the underground structure occurred during the 2011 off the Pacific coast of Tohoku Earthquake. The authors consider that local subsidence is due to the dynamic interaction between the ground and underground structures, and are investigating the mechanism of ground surface subsidence. From the results of shake table tests of a large model in 1g gravitational field in which an underground structure model was installed in a sand ground, the relationship between the accumulated shear strain of the ground and the amount of ground subsidence caused by the dynamic interaction between the ground and the underground structure has been demon-strated. In this study, as a fundamental study of numerical analysis, we focused on strain history evaluated in shake table tests, compared the analysis results of