Jacking-up device null for concrete edition level adjustment construction method

摘要

PURPOSE: To reduce the initial cost and easily cope with a part of a concrete floor on the ground or the whole floor thereof, when en uneven settlement has arisen in a concrete floor on the ground of a runway or the like of airport facilities constructed on a soft ground and the repair work of the floor level in a short time has been required. ;CONSTITUTION: A coupling tool 9 for hoist in which three pipes 7 are arranged at the Y-shaped top position of the periphery around a support 6 with a screw hole 6a bored for a lifting bolt, is buried in the uppermost layer block slab 2a of a triple-layer structure. When an uneven settlement has arisen, a reaction bolt 12 is erected in the pipe 7 by use of the coupling tool 9 and a lifting bolt 17 is connected with a screw to the support 6 and upper and lower two reaction plates 13, 14 are assembled. The upper reaction plate 13 is jacked up as a receiving use of a jack 20 and the lower reaction plate 14 is jacked up as a temporary receiving use.;COPYRIGHT: (C)1996,JPO