| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a floor slab height changing method capable of reducing construction cost and also preventing excessive stress from occurring in a structure of an existing building.SOLUTION: By using a floor slab height changing method, a height of at least a part of a floor slab 10 of an existing building 1 is changed, and when forming a floor structure 3 with the floor slab 10 as a height changing target and a trussed girder 20 supporting the floor slab 10, the method includes: steps S1 to S3 of building a new column 30 extending along an existing column 2 to which the floor structure 3 is joined and supporting the floor structure 30 from below, and installing a hydraulic jack 40 for supporting the new column 30 on a floor surface of a floor slab 6 on the lower floor of the floor structure 3; step S4 of cutting off the floor structure 3 from the existing column 2; and step S5 of lowering a height of the new column 30 by driving the hydraulic jack.</p> |
