A Study on Flexural Rigidity of Two-row Overlap Pile Wall for Deep Excavation Support

초록

Two - row Overlap Pile wall is a novel retaining wall system with high flexural rigidity and waterproofing for deep excavation support currently being developed in Korea. The Two - row Overlap Pile wall is constructed by making an overlap between consecutive four - axis (or two - axis) auger piles which themselves are overlapped and arranged in zigzag manner. In this study, the flexural rigidity of the Two - row Overlap Pile wall, including the effect of cross - sectional shape, was examined using both theoretical and numerical approaches. The results of investigation suggested that the Two - row Overlap Pile wall formed with two - row piles exhibit greatly higher flexural rigidity than conventional one - row pile walls such as Cast in place pile (CIP) and Secant pile wall (SPW), whereas the effect of overlap length between piles on the flexural rigidity is relatively minimal.

키워드