WALL STRUCTURE USING PRECAST CONCRETE PANEL WITH RIB ROWS

An underground external wall structure using a rib type precast concrete panel is provided to reduce the time and cost required for construction by excluding the necessity of an additional formwork by installing rib type precast concrete panels on the inside of a slurry wall and placing concrete between the rib type precast concrete panels. An underground external wall structure using a rib type precast concrete panel contains a slurry wall(100) installed under the ground to form the outside of an underground external wall and to prevent the breaking of rear soil during underground excavation, a multi-rib panel wall(200) composed of many rib type precast concrete panels(20) and installed to the inside of the slurry wall, inner concrete(300) placed in the multi-rib panel wall and reinforcing bars(350) buried in the inner concrete. Many strands(24) are arranged in the precast concrete panel.