Freeway bridge crack repairing method based on carbon fiber plate

Abstract

The invention discloses a freeway bridge crack repairing method based on a carbon fiber plate. The method comprises the steps of detecting and specially analyzing a crack; preparing construction materials and construction equipment and building a construction bracket platform; cleaning an opening; implanting and cleaning a bolt and fixing the bolt into the opening through vegetable glue; conducting surface treatment on a concrete member, installing an anchor, installing a fixed-end limiting frame, installing the anchor into the fixed-end limiting frame, installing a tension-end limiting frame,and installing a wedge block so that the bottom of the wedge block is arranged under concrete; fixing the carbon fiber plate to the crack through the anchor. In the method, the pre-stressed carbon fiber plate is adopted to apply external pre-stress on the bottom of a box girder for reinforcement and strengthening, the strength and the stiffness of the structure can be improved, the deflection deformation of the structure can be reduced, and the development of the crack can be restrained; besides, with the combination of a crack sealing treatment measure, the durability of a bridge and the ultimate carrying capacity of the structure can be improved, and the emergency capacity of bridge running can be improved.

Description

technical field [0001] The invention relates to the field of bridges, in particular to a method for repairing cracks in expressway bridges based on carbon fiber plates. Background technique [0002] In the external prestressed reinforcement construction of other bridges, materials such as prestressed steel bars, steel strands, and high-strength steel wires are usually used to offset the internal force generated by external loads on the beam body by applying prestressed stresses, improve its ultimate bearing capacity, and suppress cracks. develop. Prestressed steel bars, steel strands, and high-strength steel wires are self-heavy, which increases the self-weight of the bridge, which is not conducive to the ultimate bearing capacity of the structure. Contents of the invention [0003] The object of the present invention is just to provide a kind of highway bridge crack repairing method based on carbon fiber plate in order to solve the above problems. [0004] The present i...

AI Technical Summary

Problems solved by technology

Prestressed steel bars, steel strands, and high-strength steel wires increase the self-weight of the bridge, which is not conducive to the ultimate bearing capacity of the structure

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