SOUNDPROOFING METHOD FOR CONCRETE BRIDGE GIRDER CUTTING WORK

摘要

PROBLEM TO BE SOLVED: To provide a soundproofing method for precast concrete bridge girder cutting work, which enables inexpensive execution of work and effective soundproofing by using a lightweight and inexpensive material.SOLUTION: In concrete cutting work using a concrete cutter for a side surface or a bottom surface of a concrete bridge girder 2, a plurality of sound insulation panels 20 having an open-cell foamed synthetic resin plate coated with an impervious material are arranged and formed into sound insulation walls 11, 12 and 13, and a cutting work location is surrounded by the sound insulation walls to reduce a value of a noise reaching a neighborhood.SELECTED DRAWING: Figure 1