| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and construction of vibration isolation for base section of reinforced concrete column, by which the floating allowable structure of a building setting a large aspect ratio with respect to rocking vibrations caused by earthquakes can be realized with a reinforced concrete(RC) column. SOLUTION: A steel sheet which is provided with a rising section that can sufficiently restrict the horizontal displacement of the RC column by supporting the column and is also used as the bottom plate of the form for the column being placed on the upper surface of foundation concrete, from which the main reinforcement of the column is protruded by a required length, and the main reinforcement is caused to stand up through the through holes of the steel sheet. Then the sheet is fixed to the foundation concrete, by means of fixing jigs and the edges of the contacting sections of the steel sheet with the RC column and build-up section of the main reinforcement are cut off. Thereafter, the RC column, which floats accompanying the rocking vibrations, is constructed by arranging reinforcing bars and assembling the form by placing concrete.
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