Stress and deformation analysis of the cellular steel sheet pile structure was carried out with FLAC2D.By comparing the computational soil pressure with the static soil pressure

the Rankine active soil pressure and Rankine passive soil pressure

the simplified calculation method of the fill soil pressure was given

it considers that front pile of the structure is subjected to Rankine active soil pressure

and soil pressure on back pile is divided into two parts by the point of zero displacement

pressure of constant value acting on the upper part

while pressure on the lower part increasing linearly to the static soil pressure.On the other hand

the development of shear strain increment shows that failure surface often occurs in the medial axis of the cellular cell

which is consistent with the conclusion of Terzaghi.