Centrifugal Model Test and Design Method for Temporary Retaining Wall Using Soil Buttress as Displacement Suppression

抄録

It is important to suppress the displacement of temporary retaining wall when excavating in urban areas close to existing structures. Soil buttresses have economic advantages compared to struts, such as in large-scale excavation works. On the other hand, a challenge in designing such temporary retaining walls is needed to consider displacement suppression mechanism using methods such as FEM. In this paper, we clarified the displacement suppression mechanism of soil buttresses using centrifuge model tests with excavation. Cutout shaped soil buttresses were proposed based on the test knowledge. In addition, we proposed a design method of temporary retaining walls using soil buttresses to suppress the displacement.