LATERAL FRAME STRUCTURE AND REINFORCING MEMBER INSTALLATION METHOD

PROBLEM TO BE SOLVED: To provide a reinforcing method for beams or girders of a new RC viaduct, by which a process for filling a clearance between a reinforcement object portion and a reinforcing member with a binding material can be simplified.SOLUTION: A reinforcing member 21 with a U-shaped cross-section is applied to a vertical beam 6 to be reinforced, and through bolts 25 are penetrated through both side parts of the reinforcing member and the vertical beam 6 and they are connected together. A clearance between the reinforcing member 21 and the vertical beam 6 (a side clearance D1, a bottom clearance D2, a bolt outer periphery clearance D3) is filled with grout as a binding material and thus a grout layer 28 is formed. The quality of material of the grout, the side clearance D1, the bottom clearance D2, the bolt outer periphery clearance D3, that is, a diameter of a through-hole 6h for the through bolt 25 are set such that: before the grout made to flow down from the side of one side portion of the side clearance D1 passes through the bottom clearance D2, rotates around to the side of the other side portion, and reaches an opening of the side of the other side portion of the through-hole 6h, the grout having passed through the through-hole 6h flows out from an opening of the side of the other side portion.