Steel combination structure, method of constructing earth retaining wall, and method of removing upper pile for earth retaining wall

摘要

PROBLEM TO BE SOLVED: To provide a method for constructing a core material and a retaining wall, which enables quick and easy removal work of an upper pile of a core material for an earth retaining wall. SOLUTION: An upper pile 10 and a lower pile 20 are detachably connected to each other by a connecting means 30, and the connecting means 30 is a sheath member 31 attached to the upper pile 10 and the lower pile 20. , A pillar member 32 inserted into the space defined by the sheath member 31 is provided. The upper pile 10 and the lower pile 20 are connected by inserting the pillar member 32 into the space defined by the sheath member 31. Further, when the upper pile 10 is removed, the connection state with the lower pile 20 is released by pulling the upper pile 10 upward. [Selection diagram] Fig. 3