| 摘要 |
<p>The present invention relates to a steel wire supporting unit, a hydraulic jack for tensioning a steel wire, and a flexural member-variable support method using the same which are used when the hydraulic jack tensions the steel wire at the center of a flexural member so that a compressive force can be induced in the flexural member. According to the present invention, the steel wire supporting unit supporting the steel wire arranged on the lower side of a slab longitudinally by being coupled to the lower side of the longitudinal center of the slab comprises: a fixed plate attached to the lower side of the slab; a first supporting bar and a second supporting bar coupled to the lower side of the fixed plate, separated from each other at a certain interval, having the steel wire therebetween, and having multiple fixing holes formed on the mutually corresponding positions thereof and vertically separated from each other at regular intervals; a pressurizing plate coupled to the other ends of the first and the second supporting bar; and a steel wire supporting body installed between the first and the second supporting bar, having both sides coupled to a pair of the fixing holes corresponding to each other, and supporting the steel wire in the downward direction of the slab. According to the present invention, the compressive force is applied to the flexural member by a simple structure and method whereby the steel wire is pulled while the pressurizing plate of the steel wire supporting unit is pressurized after the hooks of steel wire tensioning bars mounted on both sides of a piston are hooked on the center of the steel wire anchored on both ends of the flexural member, thereby obtaining a definite reinforcing effect.</p> |
