Flexural Capacity Evaluation of High-strength New-shape Composite Pile (S-Pile) for the Soldier Pile in the C.I.P Method

주열식공법 엄지말뚝을 위한 고강도 신형상 합성파일 (S-Pile)의 휨성능 평가

In Korea, many buildings are built with underground spaces and cast-in-place pile method is mostly applied in the temporary retaining walls for the underground space construction. A H-shaped steel section is generally embedded in the soldier pile in the C.I.P method. In this study, a new and economical section with high strength steel replacing the H-shaped section was proposed and its flexural capacity was evaluated experimentally. The new section is the concrete-filled composite section with pentagonal thin plate and thick flange plate. Test results showed that the proposed section has an excellent flexural strength and ductility.