ABSTRACT
T.Tsuchida, Y.Watabe & M.S.Kang Port and Airport Research Institute, Yokosuka, Japan
ABSTRACT: In recent years, as the scale of structures has been enlarged and the construction works have been carried out in deeper sea areas, the loads due to constructions has become close or larger than the consolidation yield stress, pc, of the Pleistocene clay layer at large depth. The author’s research group has been carried out a series of studies on the mechanical properties of aged clays having structures that were formed during the process of long-term sedimentation and consolidation. In the former part of this report, the compression and shear characteristics of aged clay, at first, are reviewed with related to the case study on Kansai International Airport project. In the latter part, the method for evaluating the degree of structure is newly proposed, and a unique consolidation behavior of structured clay is shown.
