平面変形状態における粘土のせん断特性について(2)

Abstract

A bye-axial compression apparatus by which one could measure plane strain cha-racteristics of clay convenientry was constructed. And undisturbed Osaka alluvial claywas tested by this apparatus and unconfied compreesion apparatus.Test results are:1) Axial strain ~at failure under plane strain conditon is less than one underunconfined condition. But T4s-=eI-ss at failure of two tests are almost equal.2) Axial strength under plane strain condition is slightly less than one under un-confined condition. It would be refered to higher pore pressure set up which is causedby intermediate principal stress in the plane strain test.