EFFECTS OF MULTI-DIRECTIONAL CYCLIC SHEAR ON THE POSTEARTHQUAKE SETTLEMENT OF GROUND

摘要

The effects of direction of cyclic shear on the properties of saturated sandy soil such as vertical effective stress reduction during earthquake, post-earthquake settlement and shear strength were investigated by using the multi-directional cyclic simple shear test apparatus. As a result, it is found that these properties are affected by the multi-directional cyclic shear compared with single-directional shear and that the granulated blast furnace slag (GBFS), which is substituted for a natural sand, shows less vertical effective stress reduction and less settlement, hence higher shear strength than the natural sand.