Abstract: The soldier pile and lagging with inclinedly inserted panel wall has a special configuration since the soil behind the wall can deform freely and the drainage path behind the wall is connected to the ambient environment. Therefore, the earth pressure distribution, magnitude and the soil arching behind the retaining wall are affected by its unique configuration. This paper presents the earth pressure estimation formula for the soldier pile and lagging with inclinedly inserted panel wall considering the soil arching effect. The earth pressures obtained by the recommended formula, physical model tests, and numerical analysis results by AQAQUS finite element analysis method are compared. It is concluded that the proposed formula can fairly estimate the earth pressure on this new retaining structure type.

Key words: Soldier Pile and Lagging with Inclinedly Inserted Panel Wall, Earth Pressures, Estimation Formulas