METHOD OF BUILDING UNDERGROUND CONTINUOUS WALL IN PILE SUPPORT BUILDING HAVING UNDERGROUND FLOOR AND CAST-IN-PLACE CONCRETE PILE

摘要

PURPOSE:To reduce a cost, by a method wherein a reinforcing cage for an underground continuous wall and a reinforcing cage for a cast-in-place concrete pile are erected after partition are installed so that concrete is prevented from entering around a post-construction underground body part. CONSTITUTION:A reinforcing cage 7a for an underground wall is overlapped with a reinforcing cage 8a for a cast-in-place concrete pile for integral formation to form a reinforcing cage 9a, and partitions 10 and 11 are installed so that concrete is prevented from entering around a joint between post-construction underground body parts. After the reinforcing cage 9a is erected in an excavated hole 9, concrete is placed. This enables building of a concrete pile simultaneously with placing of concrete for a continuous wall, resulting in possibility to eliminate a work to refill with excavated soil and reexcavate a ground after formation of the concrete pile. Further, this enables reduction of the degree of need for reinforcement of an underbeam.