| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for preventing the occurrence of fatigue crack simply without removing an existing soleplate and to provide a cutting device used in this method. SOLUTION: Although the bridge girder 1 of a bridge is installed on an abutment 3 through a support 2, the soleplate 5 like a flat plate is fixed between the bridge girder 1 and the support 2 by fillet welding usually. A welded joint part of the soleplate 5 and a lower face of a lower flange 1a is horizontally cut by the cutting device 10 in which a disc grinder having a flat upper face is loaded on an XY table 12 to cut and remove the soleplate 5 from the lower flange 1a and exchange a mounting bolt 8 tightening the soleplate 5 on the lower flange 1a with a mounting bolt having such strength that does not necessitate fillet welding. COPYRIGHT: (C)2005,JPO&NCIPI
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