| 摘要 |
PURPOSE: A bridge repairing method and a structure are provided to prevent collapse of a bridge, to drain and evaporate rain water infiltrated into the bridge, and to check the state of cracks conveniently by sticking carbon fiber sheets in a lower concrete surface of the bridge in repairing the crack. CONSTITUTION: Cracks in a lower part of a bridge(1) and a concrete surface(3) of a column(2) are eliminated to repair the bridge. Primer(4) of 0.3kg/m2 is manufactured with mixing epoxy resin and a hardening agent, and spread two or three times. Adhesive resin(5) of 0.5kg/m2 is spread after curing the primer over 25 hours. A carbon fiber sheet(6) is stuck on the adhesive resin to expose the lower part of the bridge and the concrete surface of the column, and impregnation resin(7) is spread. The carbon fiber sheet is stuck, and the impregnation resin is spread repeatedly to stack more than two carbon fiber sheets. The impregnation resin is hardened for 2 weeks at the temperature of 10 deg.C and for a week at the temperature of 20 deg.C, and paint(8) is spread on the resin. The width of the carbon fiber sheet is controlled selectively according to the state of crack. The bridge and the column are repaired, and reinforced with stacking multiple carbon fiber sheets.
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