STRUT OPERATING TOOL IN EARTH RETAINING SUPPORT STRUCTURE OF EXCAVATED GUTTER

摘要

PROBLEM TO BE SOLVED: To provide a strut operating tool capable of surely and smoothly carrying out rolling operation of a strut. SOLUTION: A waiting operating tool 7B has a first strut corbel 21 and a second strut corbel 22 as one body on the lower end of a bar material 15. The first strut corbel 21 is narrow and has an upward projection on the front end (wale member 3 side) and an arc-shaped corbel surface on the bar material 15 side. The second strut corbel 22 is formed in the shape of a plate and has the upward projection on the front end. When the waiting operating tool 7B is pulled out by placing a strut corbel 20 thereof under a strut 4, the strut 4 is lifted up by the first strut corbel 21 of the strut corbel 20 and the second strut corbel 22 and, at the same time, it is rotated upward with a second horizontal hinge bearing shaft 8d of the basic end bearing section 8 as the center. The strut 4 falls down from the first strut corbel 21 of the strut corbel 20 and the projection of the second strut corbel 22 in proper timing to put on the wale member 3 by rotating at an angle of 90 deg.. By the constitution, the strut 4 is sheltered on the wale member 3 to enable an embedded pipe to lower from above.