CONSTRUCTION METHOD OF PERMANENT STRUCTURE UNDERGROUND EXTERIOR WALL AND EARTH RETAINING WALL HEAD IN INVERTED CONSTRUCTION METHOD

摘要

PURPOSE: To reduce amount of deformation of an earth retaining wall by forming the first floor slab ends and an earth retaining wall head together as a unit so that flexural rigidity of the first floor slab ends is the approximately same as that of the earth retaining wall head. CONSTITUTION: When the first floor slab ends 2 of reinforced concrete construction are connected to the head of a continuous underground wall 1 of cast-in-place reinforced concrete, the same amount of reinforcement as that of the continuous underground wall 1 is arranged, and after placing reinforcing bars in a beam 3, concrete is placed to construct the first floor slab ends 2. When the first floor slab ends of steel framed concrete construction are connected to a column strip wall 6 constructed by a soil cement method, concrete is placed to construct the first floor slab ends after the reinforcing bars of the beam 3 and steel frames 5 of the first floor slab ends are installed to the tops of H-shape steels 4 of core materials of the colum strip wall 6. By the construction of the earth retaining wall head, bending moment distribution occurring in the earth retaining wall is decreased over the entire length, and amount of deformation of the earth retaining wall is decreased because of having good balance.