CONSTRUCTION OF SUPPORT FOR BRANCH PART IN CYLINDRICAL WALL BODY USED IN EXCAVATED HOLE COVERING WORK

摘要

PURPOSE:To improve the operation efficiency by placing a support which supports the branching segments of a cylindrical wall body, between them and forming this support from a pair of support legs stuck to the branching segments. CONSTITUTION:Main wall parts 10, 10 are constructed in such a way that branching segments 11 are placed below a cylindrical wall body and RC segments 14 are tightened at the left and the right position of this segment 11 with bolts circumferentially. Then the segment 11 is set between the upper end parts of the main wall parts 10, 10 and the segment 14 of the main wall part 10 is bolted to the segment 11. Support legs 15, 16 are mounted to the segments 11, 11 placed on and under the cylindrical wall body via PC steel members 17, respectively and the base parts 15a, 16a of the upper and the lower support legs 16 are joined with each other via a joint tool 5. Thus the operability and the installation performance may be improved.