UNDERGROUND CONTINUOUS WALL CONSTRUCTION WORK

摘要

PURPOSE:To facilitate drawing-out of partition plates before formation of succeeding walls by a method in which a connecting plate, a side plate, and a partition plate are interposed in the joints of continuous walls, and under a condition that concrete for preceding wall is in a semi-hardened state, the connecting plate and the side plate are drawn out. CONSTITUTION:A reinforcing bar cage 3 is set in a preceding excavated hole 1a, and a filler 12, e.g., crushed stones, etc., is packed between the outside end of a joint box 10 and the side end of the hole 1a. Under a condition that concrete for forming preceding wall is in a semi-hardened state, the connecting plate 10a and side plate 10b of the joint box 10 are drawn out, and a hole 1b for succeeding wall is excavated in the side of the filler 12. After the partition plate 10c is drawn out, a reinforcing bar cage for succeeding wall is inserted into the hole 1b by overlapping it with the cage 3, and concrete for following wall is placed. The removal of the partition wall can thus be made easier, and the continuous wall can be easily constructed.