Repair reinforcing structure of steel bridge deck and repair reinforcing method of repair reinforcing structure

Abstract

The invention discloses a repair reinforcing structure of a steel bridge deck and a repair reinforcing method of the repair reinforcing structure. The repair reinforcing structure comprises the steel bridge deck, and is characterized in that the upper surface of the steel bridge deck is welded with a plurality of longitudinal steel ribs and a plurality of transverse steel ribs, the longitudinal steel ribs and the transverse steel ribs are mutually staggered to form a gridding supporting structure, crushed aggregates are filled in rectangular grooves of the gridding supporting structure, steel cover plates are arranged above the rectangular grooves and are fixedly welded with the longitudinal steel ribs and the transverse steel ribs, the adjacent steel cover plates are connected in a welded manner, epoxy resin cement paste is filled in a gap between the steel bridge deck and each steel cover plate and gaps among the crushed aggregates, and a cold-mixing resin bituminous concrete bridge deck paving layer is paved on the steel cover plates. The repair reinforcing structure of the steel bridge deck has the advantages that the repair reinforcing structure of the steel bridge deck is reliable in quality, convenient in construction, relatively low in comprehensive manufacturing cost and convenient in repair.

Description

technical field [0001] The invention relates to a repair and reinforcement structure for pavement, in particular to a repair and reinforcement structure for a steel bridge deck and a repair and reinforcement method thereof. Background technique [0002] In the early and middle period of reform and opening up, my country began to build long-span steel box girder bridges. Due to the lack of prediction of the overload situation of my country's transportation industry and the consideration of cost, the deck steel plates of the steel bridges built at that time were relatively thin. Usually 12 mm thick steel plate is used. In the case of high flow and super axle load operation for more than ten years, the bridge deck steel plates of many steel bridges have fatigue cracks prematurely. These cracks continue to expand under the continuous heavy traffic, seriously affecting the bridge. The safe use and long service life of the steel bridge also threaten the 100-year design service lif...

AI Technical Summary

Problems solved by technology

Under the condition of large flow and over-axle load operation for more than ten years, the bridge deck steel plates of many steel bridges have fatigue cracks prematurely. These cracks continue to expand under the continuous heavy traffic, seriously affecting the bridge. The safe use and long service life of the steel bridge also threaten the 100-year design service life of the bridge. Therefore, this steel bridge structure must be reinforced and repaired

[0003] The deck steel plates of existing steel bridges are usually connected by welding or by U-shaped stiffeners and vertical and horizontal diaphragms and other support structures. The structure is very complicated, so it is not easy to remove the panels from the support structure. Closed traffic for a long time has a huge impact on the society and is also difficult to afford economically, and these steel bridges are usually burdened with heavy traffic flow, simply digging out the welding cracks in the bridge deck pavement will not change the stress of the original structure, Often new cracks will appear soon, and it is difficult to play an effective repair role

Images