Abstract
Some effects, which the existence of suction has upon shear strength and the transmission of pore pressure in clay beds, are considered in this paper.
Shear strength becomes strong on account of existence of suction, but a drop of shear strength becomes remarkable when clay loses suction owing to contained water.
The transmission of pore pressure is approximated by the equation of thermal conduction into which suction is introduced as negative pore pressure. Suction delays an appearance of positive pore pressure and makes pore pressure smaller, but it increases the quantity and the rate of increase of pore pressure.
Further, if Darcy's law and other some assumptions are set up, swelling strain can be explained, too.
