| 摘要 |
<p>A method of removing part of a concrete structure, in which reinforcing bars extending upward from a lower remaining portion are buried inside a portion to be removed present above the lower remaining portion, the method comprising the steps of forming cutting sections for forming separation portions in the reinforcing bars, applying a force in a direction of separating from each other the opposite surfaces of cutting sections for moving a portion to be removed to break the boundary surface side of the portion to be removed and move it, and removing the moved portion to be removed. A platy jack which comprises two metal plates, has a flow inlet, and generates a large force by being expanded when a fluid is force-fed via the flow inlet, and which works as a device suitable for breaking the boundary surface side of the portion to be removed.</p> |
