Model Test Study of the Synergistic Interaction between New and Existing Components of Sheet Pile Walls

New and existing components of retaining structures are often combined in the width section. When combining design use requirements new structures, synergistic interactions between working conditions require clarification. In conjunction with an actual project, a sheet pile wall consisting is proposed to retain embankment. Indoor model tests were carried out simulate excavation compaction investigate changes earth pressure, bending moment, shear force, load-sharing ratio walls at different stages. The results show that pressure cantilever section piles increases increase fill volume or upper uniform load. An inflection point observed curve halfway top ground due sudden soil stiffness. moment decreases distance from under conditions, maximum occurred 0.485 0.9 m bottom pile, respectively. lateral displacement pile. Due adjustment structural force reaction front curves similar anchored initially larger for than but then becomes both piles. condition 5, was 6.531 mm, exceeding control value (5.6 mm). earth-pressure-sharing filling material load applied, 0.451, indicating reasonable.