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A flexible anti-freezing and thawing treatment method for expansion joints of expressway bridges in seasonally frozen soil regions

A technology of expressway and treatment method, applied in bridges, bridge parts, bridge maintenance, etc., can solve problems such as poor maintenance effect and damage to expansion joints of highway bridges, achieve simple technology, prevent water seepage and soil leakage, and improve anchorage performance. Effect

Active Publication Date: 2016-06-29
吉林省银河水利水电新技术设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a flexible anti-freezing and thawing treatment method for the expansion joints of expressway bridges in seasonally frozen soil areas, so as to solve the problem that the expansion joints of highway bridges are frequently damaged and the maintenance effect is not good

Method used

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  • A flexible anti-freezing and thawing treatment method for expansion joints of expressway bridges in seasonally frozen soil regions
  • A flexible anti-freezing and thawing treatment method for expansion joints of expressway bridges in seasonally frozen soil regions
  • A flexible anti-freezing and thawing treatment method for expansion joints of expressway bridges in seasonally frozen soil regions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Include the following steps:

[0046] 1. Chisel out the damaged concrete in the original anchorage area, remove the original concrete material, and pour high-performance anti-corrosion concrete 5. The high-performance anti-corrosion concrete includes the following raw materials in parts by weight:

[0047]

[0048] The composite material comprises the following raw materials in parts by weight:

[0049]

[0050] (2) Flexible filling material between the expansion joints of side beams

[0051] (1) Use a steel wire brush to brush the liquid steel surface rust removal and phosphating agent between the Mauler expansion joints of the side beams, rust removal and phosphating, once;

[0052] The liquid iron and steel surface derusting and phosphating agent is composed of the following raw materials in parts by mass:

[0053]

[0054] (2) Remove the residue on the surface of the Mauler expansion joint, and apply the interface agent;

[0055] Described interfacial ag...

Embodiment 2

[0071] Include the following steps:

[0072]1. Chisel out the damaged concrete in the original anchorage area, remove the original concrete material, and pour high-performance anti-corrosion concrete 5. The high-performance anti-corrosion concrete includes the following raw materials in parts by weight:

[0073]

[0074] The composite material comprises the following raw materials in parts by weight:

[0075]

[0076] (2) Flexible filling material between the expansion joints of side beams

[0077] (1) Use a steel wire brush to brush the liquid steel surface rust removal and phosphating agent between the Mauler expansion joints of the side beams, rust removal and phosphating, once;

[0078] The liquid iron and steel surface derusting and phosphating agent is composed of the following raw materials in parts by mass:

[0079]

[0080] (2) Remove the residue on the surface of the Mauler expansion joint, and apply the interface agent;

[0081] Described interfacial age...

Embodiment 3

[0098] Include the following steps:

[0099] 1. Chisel out the damaged concrete in the original anchorage area, remove the original concrete material, and pour high-performance anti-corrosion concrete 5. The high-performance anti-corrosion concrete includes the following raw materials in parts by weight:

[0100]

[0101] The composite material comprises the following raw materials in parts by weight:

[0102]

[0103]

[0104] (2) Flexible filling material between the expansion joints of side beams

[0105] (1) Use a wire brush to brush the liquid steel surface rust removal and phosphating agent between the Maole expansion joints of the side beams, rust removal and phosphating, twice;

[0106] The liquid iron and steel surface derusting and phosphating agent is composed of the following raw materials in parts by mass:

[0107]

[0108] (2) Remove the residue on the surface of the Mauler expansion joint, and apply the interface agent;

[0109] Described interfac...

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Abstract

The invention relates to a flexible freeze-thaw resistance treatment method for highway bridge expansion joints in a seasonal frozen soil region and belongs to a maintenance and treatment method for the traffic road bridge broken maurer joints. The method includes: chiseling off the broken concrete of the original anchorage zone, clearing the original concrete materials, pouring the high-performance wear-corrosion resistance concrete, filling the flexible filling materials in the boundary beam maurer expansion joints, wherein the initial setting time of the filleting materials is 3-5 hours, and the consolidation time is 25-30 days, and ending the treatment. The flexible freeze-thaw resistance treatment method for the highway bridge expansion joints in the seasonal frozen soil region can improve the anchorage performance of the maurer joints, resists the freeze and thaw, prevents the water seepage and earth leakage, solves the problem that the expansion joints of the road bridge often occur, achieves the joint sealing purpose by direct embedding of the flexible wear-corrosion resistance filler in the joints, is simple in treatment method, and not only can prevent the water seepage and earth leakage of the expansion joint, but also is free of freeze and thaw in winter.

Description

technical field [0001] The invention belongs to a maintenance and treatment method for damaged maule joints of traffic road bridges. Background technique [0002] The expansion joints of expressway bridges in seasonally frozen soil areas are generally Maurer expansion joints 1’, such as figure 2 , including the anchorage area 5 and the bridge deck pavement layer 7. In the anchorage area, there are pre-embedded steel bars 11, structural bars 8 and anchoring steel bars 10. The steel plate 9 is fixedly connected to the anchoring steel bar, and the side beam 4 is fixedly connected to the steel plate. There is a V-shaped waterproof sealing strip 3' between the side beams. The two design principles of Maurer expansion joints are "rigid anchorage" and "sealing and waterproofing". The above question: [0003] 1. Rigid anchoring has the problem of poor anchoring effect, and sometimes the edge beam of the expansion joint is tilted, which not only affects the operation of the vehicle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/06E01D22/00C04B28/04
Inventor 郑铎周继元杨金良
Owner 吉林省银河水利水电新技术设计有限公司
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