Combined reinforcement structure for solving cracked steel bridge deck by additionally arranging fiber-reinforced layer

Abstract

The invention relates to a combined reinforcement structure for solving a cracked steel bridge deck by additionally arranging a fiber-reinforced layer. The combined reinforcement structure for solvingthe cracked steel bridge deck by additionally arranging the fiber-reinforced layer is characterized in that the combined reinforcement structure for solving the cracked steel bridge deck by additionally arranging the fiber-reinforced layer comprises the fatigue cracked steel bridge deck, a fiber-reinforced composite material layer, shear connecting parts, steel fabrics and a concrete layer, wherein the shear connecting parts are arranged on the fiber-reinforced composite material layer, the fiber-reinforced composite material layer is laid to a cracked part of the fatigue cracked steel bridgedeck, the steel fabrics are placed on the fatigue cracked steel bridge deck, the concrete layer is arranged on the fatigue cracked steel bridge deck in a pouring mode, the shear connecting parts andthe steel fabrics are covered with the concrete layer, and the concrete layer is connected with the fatigue cracked steel bridge deck.

Description

technical field [0001] The invention relates to a bridge structure for steel bridge deck reinforcement, in particular to a combined reinforcement structure for solving cracked steel bridge decks by adding fiber reinforced layers. Background technique [0002] Since its inception, orthotropic steel decks have been favored by bridge designers for their light weight, large ultimate bearing capacity, wide application range, short construction period, high and low beam heights, and beautiful shapes, especially for long-span bridges. However, with the increase of the service life, due to the uneven rigidity of its own structure, coupled with the large traffic volume of bridges in our country, serious overloading, and the harsh environment of the bridge, its disadvantages have become increasingly prominent, and different fatigue cracks and pavements have appeared on the steel bridge deck. There are two major diseases of equipment damage. The main girders of the well-known Guangdon...

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Problems solved by technology

[0003] However, there are still many problems in the structure as follows: 1. Due to heavy traffic flow, serious overloading, and harsh external environment, the cracked bridge deck has not been reinforced, and the steel bridge deck has the risk of further corrosion, cracking or even damage; 2. The original patent The steel strips are spot-welded to the cracked bridge deck, which cannot be tightly combined with the cracked bridge deck, and there must be gaps, there is a risk of corrosion, and they cannot bear the same force with the original bridge deck; 3. The steel strips are dense and used too much The steel slats of the bridge will increase the self-weight of the bridge and reduce the bearing capacity; the ultra-high performance concrete used generally needs to be steamed at high temperature, and the construction process is complicated; 4. Welding a large number of studs on the cracked steel bridge deck will introduce welding residual stress and even form New cracks, further weakening the bearing capacity of the steel bridge deck

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