| 摘要 |
PROBLEM TO BE SOLVED: To provide a base-isolating method of an existing building excellent in workability, capable of also shortening a construction period, and capable of reducing cost.SOLUTION: When interposing a base-isolator on a cross-sectional square-shaped column 1 in an existing building, bar arrangement and a form for placing increasingly placing concrete 11 are constructed on the outer periphery of upper and lower parts 1a and 1b while leaving a range H to insert the base-isolator of the column 1, and an axial force transfer steel plate 4 whose upper and lower parts 4a and 4b respectively constitute a part of the form, is provided by being arranged over the range H on opposed two surfaces of the column 1, and next, after forming reinforcement parts 12 in the upper and lower parts by placing the increasingly placing concrete in the form, the upper and lower parts 4a and 4b of the axial force transfer steel plate 4 are fixed by being brought into pressure contact with the reinforcement parts 12 by connection means, and next, the range H to interpose the base-isolator of the column 1 is cut off, and the axial force transfer steel plate 4 is removed after inserting the base-isolator 17 into the cutoff part. |
