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Maintaining and reinforcing method of bridge steel-concrete composite segment

A steel-concrete combination and bridge technology, which is applied in bridge maintenance, bridge reinforcement, bridges, etc., can solve problems such as sudden changes in stiffness of steel-concrete joints and easy cracking, so as to reduce the risk of cracking, improve the stress on the bridge deck, and avoid corrosion and damage Effect

Inactive Publication Date: 2017-05-31
天津市交通科学研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution cannot effectively alleviate the problems of large sudden changes in stiffness and easy cracking of steel-concrete joints.

Method used

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  • Maintaining and reinforcing method of bridge steel-concrete composite segment
  • Maintaining and reinforcing method of bridge steel-concrete composite segment

Examples

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Embodiment Construction

[0034] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0035] A maintenance and reinforcement method for a steel-concrete joint section of a bridge, characterized in that the operation steps are as follows:

[0036] 1) Clean up the bridge deck: Remove the steel-concrete joint section 2 steel box girder deck 7 between the steel box girder section 1 and the concrete section 3 and the asphalt concrete layer originally laid on the bridge deck of the concrete beam section in the corresponding range to ensure the cleanliness of the bridge deck;

[0037] 2) Measurement and detection: After the cleaning is completed, accurately measure the flatness and slope of the bridge deck steel plate to determine the local deformation of the steel box girder roof, detect the steel-concrete joint section, and determi...

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Abstract

The invention relates to a maintaining and reinforcing method of a bridge steel-concrete composite segment. The method is characterized by include the following operation steps that (1) the bridge deck is cleaned; (2) measurement and detection are performed; (3) sand blasting for derusting is performed; (4) detection is performed; (5) spraying of an anti-corrosion layer is performed; (6) welding of shear nails is performed; (7) a shearing device is mounted; (8) glue injection is performed; (9) a reinforcing mesh is mounted; (10) a high-tenacity concrete layer is poured; (11) high-temperature steam curing is performed; (12) a water-proof bonding layer is laid; and (13) an asphalt layer is laid. The maintaining and reinforcing method of the bridge steel-concrete composite segment is scientific and reasonable in design and capable of effectively improving bridge deck stress, reducing concentrated stress of the steel-concrete composite segment, increasing the anti-shear capacity of the composite segment, preventing bridge deck fracture and ensuring driving safety.

Description

technical field [0001] The invention belongs to the technical field of civil engineering bridge construction, and relates to a maintenance and reinforcement method for a steel-concrete joint section of a bridge. Background technique [0002] During the bridge construction process, a steel-concrete composite girder bridge was designed to make the structure more stable. The steel-concrete bonded section of the steel-concrete bonded girder bridge is connected by two different materials, that is, the bonded connection between the prestressed concrete main girder and the steel main beam. nearby. When the bridge is built, the steel box girder is first installed in place, and the shear nails are arranged within the joint section inside the steel box girder, and then the concrete is poured. [0003] Due to construction and concrete hardening micro-shrinkage in the steel-concrete joint section, there will be gaps between the steel box girder roof and the concrete top surface, causi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00E01D19/12E01C7/18E01D101/26
CPCE01D22/00E01C7/187E01D19/125E01D2101/26
Inventor 闫燕红何立忠孙运国邓鸣齐怀展王蕊谢春光马爱静王甫友刘永亮张永宾胡惜亮王磊王振宇张珺
Owner 天津市交通科学研究院
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