EFFECTS OF PRE-SHEAR HISTORY ON REPEATED LIQUEFACTION BEHAVIOR OF DENSE SAND USING HOLLOW CYLINDRICAL TORSIONAL SHEAR APPARATUS

摘要

The liquefaction resistance of dense sand is influenced by the pre-shear history considerably and the increase in cyclicnumbers of pre-shear seems to have larger effect rather than the increase in strain amplitude. Large strain history seemedto have different effects to the following stages of liquefaction compared with that of small strain history.