CONSTRUCTION METHOD FOR INCREASING RIGIDITY OF GIRDER, AND GIRDER MEMBER

摘要

PROBLEM TO BE SOLVED: To easily increase the rigidity of an existing girder in a location where the rigidity of the girder should be increased.;SOLUTION: Firstly, in a scraping step, a top surface 7 of a wheel guard 5 is scraped in a rectangular wave-like cross-sectional shape, and a plurality of rectangular grooves 8 are formed at predetermined depths. Next, in a drilling step, a hole 9 is formed at the wheel guard 5 by performing drilling in the position in which a reinforcing bar 6 is embedded of the wheel guard 5. After that, in a joining step, a precast plate 10 at which a protrusion is formed is joined to the wheel guard 5 so that the protrusion can be fitted into the groove 8 of the wheel guard 5. Subsequently, in a core material arrangement step, a reinforcing bar 14 is inserted into the hole 9 of the wheel guard 5 and a through-hole 13 of the precast plate 10. After that, in a filling step, mortar 15 is placed in the hole 9 and the through-hole 13 from an upper opening of each through-hole 13. Thus, since the mortar 15 placed in the hole portion 9 and the through-hole 13 is hardened, the precast plate 10 is integrally connected to the girder member 3.;COPYRIGHT: (C)2010,JPO&INPIT