Soil-cement walls with H-shaped steels used as retaining walls can be used as piles to support vertical loads of buildings by extending the pile tip (H-shaped steel tip) into the bearing layer and controlling soil-cement strength. On the other hand, the lateral resistance, especially in-plane resistance, may cause the H-steels to break apart into strips and rapidly reduce the lateral rigidity. Therefore, cyclic lateral loading tests were conducted on the in-plane walls of the soil-cement with H-shaped steels. The initial stiffness was the shear stiffness of the entire soil-cement wall. However, at a deformation angle of about 0.5/1000 rad, the lateral bearing capacity determined by the adhesion strength between the H-steel and soil-cement was reached, after which the stiffness dropped rapidly. It was also found that the lateral bearing capacity increased when stud connectors were attached to the H-steel. After the adhesion reached the ultimate resistance, the lateral stiffness became the stiffness of the H-steels only, and the behavior was stable until about 10/1000 rad, when the steel yielded.
