| 摘要 |
A tube is inserted in an opening of a girder web. Grooves formed in edges of the opening are mated with grooves on the tube, and a pair of reinforcing plates are attached to the tube so as to sandwhich the girder web. An auxiliary force applicator is inserted in an axial force introduction hole of the reinforcing plates, and in a state where one reinforcing plate is fixed, a load is applied to the other reinforcing plate in the rotational axial force direction, and as it is rotated greater force is applied, and the girder web and the pair of reinforcing plates are friction grip connected. The auxiliary force applicators are pulled out from the axial force introduction holes and the axial holes are plug welded, further fixing the reinforcing plates and the girder web.
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