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Reinforcement structure and reinforcement method of main girder of reinforced concrete girder bridge

A technology for reinforced concrete and concrete structures, which is used in bridge reinforcement, bridges, bridge maintenance, etc., and can solve the problems of inconvenient construction, high investment cost, and poor reinforcement effect.

Active Publication Date: 2016-12-07
陕西中项建材科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a reinforcement structure for the main girder of a reinforced concrete girder bridge in view of the deficiencies in the above-mentioned prior art. The bridge reinforcement structure has problems such as construction inconvenience, high input cost, and poor reinforcement effect

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  • Reinforcement structure and reinforcement method of main girder of reinforced concrete girder bridge
  • Reinforcement structure and reinforcement method of main girder of reinforced concrete girder bridge
  • Reinforcement structure and reinforcement method of main girder of reinforced concrete girder bridge

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Embodiment Construction

[0081] Such as figure 1 , figure 2 The main girder reinforcement structure of a reinforced concrete girder bridge includes a reinforcement formwork located outside the lower part of the reinforced main girder 1, a cavity between the reinforcement formwork and the reinforced main girder 1 and formed by pouring concrete. The concrete structure 4 and the prestressing system arranged in the reinforcement formwork, the reinforcement formwork and the concrete structure 4 are arranged along the longitudinal bridge direction of the main girder 1 to be strengthened, and the cross-sectional shapes of both are concave.

[0082] The reinforcing formwork includes a beam bottom formwork 2 arranged at the bottom of the reinforced main beam 1 and two beam side formworks 3 respectively arranged on the left and right sides of the bottom of the reinforced main beam 1, and the beam bottom formwork 2 is arranged horizontally. The two beam side templates 3 are arranged vertically and symmetricall...

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Abstract

The invention discloses a reinforced concrete girder bridge girder reinforcing structure and method. The reinforcing structure comprises a reinforcing form board, a concrete structure located in a cavity between the reinforcing form board and a to-be-reinforced girder and a prestress system arranged on the reinforcing form board, wherein the reinforcing form board includes a girder-bottom form board and two girder-side form boards; the prestress system comprises two longitudinal prestress steel strands penetrating the reinforcing form board and a plurality of first transverse prestress steel strands penetrating the girder-bottom form board, four steel anchor boxes are disposed on the to-be-reinforced girder, and the two longitudinal prestress steel strands, two second transverse prestress steel strands and the four steel anchor boxes form the annular prestress system. The reinforcing method includes the steps of firstly, prefabricating the reinforcing form board; secondly, arranging anchor parts; thirdly, hoisting and fixing the reinforcing form board; fourthly, pouring concrete; performing prestress tension. The reinforcing structure and method is reasonable in design, simple in construction, good in reinforcing effect and capable of solve various problems of existing reinforcing methods.

Description

technical field [0001] The invention belongs to the technical field of bridge reinforcement, and in particular relates to a reinforced concrete girder bridge main girder reinforcement structure and a reinforcement method. Background technique [0002] When reinforcing reinforced concrete girder bridges, the current reinforcement methods mainly include reinforced concrete injection molding reinforcement method, steel plate or steel bar reinforcement method, fiber material reinforcement method, external prestressed reinforcement method, etc. Among them, the reinforcement effect of the external prestressing reinforcement method is obvious, but the construction difficulty is relatively high, the steel strands or steel bars are mostly exposed on the surface of the component, and the corrosion phenomenon is serious, which greatly affects the service life of the reinforcement structure, and the overall reinforcement effect is poor. . The common reinforced concrete injection moldin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D22/00
Inventor 李博渊
Owner 陕西中项建材科技有限公司
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