Method for reinforcing reinforced concrete beam by utilizing fiber reinforced concrete slab

Abstract

The invention relates to a method for a reinforcing reinforced concrete beam by utilizing fiber reinforced slab, comprising the following steps: a, preparing a steel fiber reinforced concrete slab, and reserving holes on the slab; b, removing partial concrete at the part to be sheared of the reinforced concrete beam to be reinforced, thus forming a notch, and implanting a steel bar in the notch; executing the step a and the step b in no particular order and then executing the step c; c, embedding the steel fiber concrete slab prepared in the step a into the notch formed in the step b, cohering the joint surface of the steel fiber concrete slab and the reinforced concrete beam to be reinforced by building structure glue, penetrating through the holes formed in the step a by the steel bar in the step b, and fastening the end part of the steel bar by nuts. In the invention, reinforcing by embedding the steel fiber reinforced concrete slab into the reinforced concrete beam to be reinforced is realized, thus solving the problem of material differentiation in the prior art, causing material property of the steel fiber reinforced concrete slab to be almost consistent with that of the reinforced concrete beam to be reinforced, and producing no spalling.

Description

technical field [0001] The invention relates to the technical field of reinforcing reinforced concrete structures, in particular to a method for reinforcing reinforced concrete beams with fiber concrete slabs. Background technique [0002] Concrete structures have come a long way since the introduction of Portland cement in the 1820s. With the passage of time, a large number of early-built small and medium-sized bridges and protective constructions have exceeded their design life, and some existing structures need to be rebuilt and reinforced due to functional changes and potential safety hazards. The concrete strength of these buildings is generally low, so whether it can be effectively repaired and reinforced to improve its bearing capacity and safety has become a new topic for structural engineers. [0003] In traditional reinforcement methods, a problem is unavoidable: the difference in properties between the reinforcement materials (such as steel, fiber) and the concre...

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Problems solved by technology

[0003] In traditional reinforcement methods, a problem is unavoidable: the difference in properties between the reinforcement materials (such as steel, fiber) and the concrete structure materials to be reinforced leads to waste of reinforcement materials or prominent reinforcement secondary problems, such as reinforcement materials Bond spalling caused by the inconsistency of the deformation of the concrete structure to be reinforced, etc.

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