EARTH PRESSURE SUPPORTING METHOD OF A WALL TRENCH FOR THE CONSTRUCTION OF A TRENCHLESS UNDERGROUND STRUCTURE CAPABLE OF FACILITATING THE ARRANGEMENT OF REINFORCING BARS

摘要

PURPOSE: An earth pressure supporting method of a wall trench for the construction of a trenchless underground structure is provided to safely support earth pressure even after a support for supporting a precast panel is removed.;CONSTITUTION: An earth pressure supporting method of a wall trench for the construction of a trenchless underground structure is as follows. Precast panels(20) are arranged and assembled on both sides of an excavated wall trench(10) to support earth pressure. Horizontal supports(30) for a panel are installed in a height direction and support the precast panels. A pair of vertical piles(40A,40B) facing each other are arranged in the longitudinal direction of the wall trench. Horizontal supports(30a) for a pile are installed in a height direction and support the vertical piles. The top and bottom ends of the vertical piles are supported in a horizontal direction through upper and lower horizontal struts(50A,50B), and the installed horizontal supports are removed.;COPYRIGHT KIPO 2013