Fiber composite-reinforced anti-corrosion anti-collision wall for bridge and preparation method of wall

Abstract

The invention discloses a fiber composite-reinforced anti-corrosion anti-collision wall for a bridge and a preparation method of the wall. According to the anti-collision wall, a reinforcing layer is arranged on base concrete, and the base concrete is anti-collision wall concrete of an original bridge; and the reinforcing layer comprises a metal plate, fiber reinforced cloth 1, fiber reinforced cloth 2 and surface damping particles in sequence. The fiber reinforced cloth adopted by the invention has higher impact resistance and can effectively resist impact; and the fiber reinforced cloth is combined with a bottom metal plate and the surface rubber particles, so the impact resistance of the anti-collision wall can be effectively improved. The fiber reinforced cloth and the metal plate are directly bonded through the impregnating adhesive, an impregnating system is an epoxy resin adhesive system, and a cured material of the impregnating adhesive is excellent in mechanical property, high in density and excellent in corrosion resistance. The anti-collision wall has excellent impact resistance and corrosion resistance at the same time, and the durability and safety of the bridge can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of bridge anti-collision walls, in particular to a fiber composite reinforced anti-corrosion bridge anti-collision wall and a preparation method thereof. Background technique [0002] The "Code for Design of Highway Traffic Safety Facilities" and "Code for Design of Urban Bridges" stipulate that anti-collision barriers should be installed on both sides of highway bridges and urban bridges. At present, one of the main application forms of anti-collision barriers is ordinary reinforced concrete. Ordinary reinforced concrete has "inherent" defects such as insufficient durability and poor compactness, which lead to its low impact resistance, peeling off of the surface during use, and exposed corrosion of steel bars, which affect its use. In cold winter areas, in order to deal with accidents and disasters caused by snowfall and freezing, deicing salts such as sodium chloride and calcium chloride are often sprayed...

AI Technical Summary

Problems solved by technology

Ordinary reinforced concrete has "inherent" defects such as insufficient durability and poor compactness, which lead to its low impact strength, peeling off of the surface during use, and exposed corrosion of steel bars, which affect its use.

In cold winter areas, in order to deal with accidents and disasters caused by snowfall and freezing, deicing salts such as sodium chloride and calcium chloride are often sprinkled to cause salt freezing damage to bridge anti-collision walls and reduce the ability of components to resist impacts

At present, the solution to the problems of the protective layer of the anti-collision wall falling off and the corrosion of steel bars is mainly to use mortar to plaster the surface or apply anti-corrosion coating in the later stage. These measures can alleviate the problems of steel bar corrosion and surface layer falling off, but they cannot fundamentally solve them.

[0003] Ordinary reinforced concrete anti-collision walls mainly have two problems: one is that the concrete itself has low strength, poor compactness, and poor impact resistance; the other is that due to poor compactness, its resistance to H 2 O.CO 2 , Cl - Plasma has poor erosion ability and is prone to damage