CONSTRUCTION METHOD OF UNDERGROUND STRUCTURE USING COMPOSITE WALE

摘要

The present invention relates to a construction method of an underground structure using a sheathing wall and a supporting strut. In particular, the construction method of the underground structure using a composite wale allows lateral earth pressure, which is applied to the sheathing wall, to be equally transferred to a weir and a slab of the underground structure, facilitates connection of the weir thereof, and performs a concrete construction of an underground outer wall. The weir of the underground structure is used as the supporting strut for a sheathing timbering during the excavation construction of the same when building the underground structure, and used as an original structure after the excavation completion thereof so the construction method of the underground structure can prevent an excessive plan of the weir thereof by the lateral earth pressure to be applied to the sheathing wall and can omit a molding work.