GROUT INJECTION METHOD IN FIXING WORK OF STEEL FRAME EXPOSED TYPE COLUMN BASE PART AND WASHER OF BASEPLATE FASTENING NUT

PROBLEM TO BE SOLVED: To provide a grout injection technology in fixing work of a steel frame exposed type column base part, capable of restricting an unrequired overflow of a grout, by precisely and stably providing the air bleeding function for outwardly blowing off air staying under a baseplate when injecting the grout material and the confirming function for confirming a filling state of the grout with a simple constitution. SOLUTION: An opening part blocking-up member 14 with an overflow hole 19 can be attached to an opening part used for injecting the grout formed in a washer of a baseplate fastening nut fixed to a lower end part of a steel frame column. The plate thickness of a peripheral part of at least the overflow hole 19 of its opening part blocking-up member 14 is thinly formed. The size of the overflow hole 19 is set in the size capable of flowing out a liquid part 21 of the grout 20 and capable of restraining the outflow of the liquid part 21 by early causing clogging by a fine aggregate 22 in the grout 20. COPYRIGHT: (C)2006,JPO&NCIPI