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Carbon fiber cloth composite concrete bridge deck seamless expansion joint

A technology of carbon fiber cloth and seamless expansion and contraction, which is applied in the direction of bridges, bridge parts, bridge materials, etc., can solve the problems of reducing crack growth speed and development, low availability, high price, etc., to enhance anti-reflection crack performance, prevent Creates and extends the effect of improving overall tensile strength

Active Publication Date: 2020-04-28
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(1), (2), (3) By improving the performance of the material, the occurrence time of reflective cracks can be effectively delayed, and the expansion speed and development of cracks can be reduced, but the impact of

Method used

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  • Carbon fiber cloth composite concrete bridge deck seamless expansion joint
  • Carbon fiber cloth composite concrete bridge deck seamless expansion joint
  • Carbon fiber cloth composite concrete bridge deck seamless expansion joint

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0043] Example 1:

[0044] See figure 1 , figure 2 with image 3 , The present invention provides a technical solution: a carbon fiber cloth composite concrete bridge deck seamless expansion joint, including concrete bridge deck 1, steel embedded parts 2, asphalt overlay 3, expansion joint filler 4, PAN-based carbon fiber Cloth 5, steel plate 6, groove 7 and U-shaped groove 8. The concrete bridge deck 1 is placed under the asphalt overlay 3, the concrete deck 1 is placed on both sides of the trench 7, and the lower end of the embedded steel bar 2 is placed at In the concrete bridge deck 1, the upper end of the embedded steel bar 2 is set in the asphalt overlay 3. The embedded steel bar 2 includes an upper cross bar 21, a lower cross bar 22 and a vertical bar 23, an upper cross bar 21 and a lower cross bar 22 In a parallel structure, the vertical rods 23 are provided on both sides of the upper horizontal rod 21 and the lower horizontal rod 22. The upper horizontal rod 21, the low...

Example Embodiment

[0045] Example 2:

[0046] See Figure 4 , Figure 5 with Image 6 , The present invention provides a technical solution: a carbon fiber cloth composite concrete bridge deck seamless expansion joint, aimed at the structure (3 layers) of the bridge seamless expansion joint reconstruction technology when the 11cm asphalt overlay is added, including the concrete deck 1, Reinforcement embedded parts 2, asphalt overlay 3, expansion joint filler 4, PAN-based carbon fiber cloth 5, steel plate 6, groove 7 and U-shaped groove 8, concrete bridge deck 1 is set under asphalt overlay 3 , The concrete bridge deck 1 is set on both sides of the trench 7, the lower end of the steel bar embedded part 2 is set in the concrete bridge deck 1, the upper end of the steel bar embedded part 2 is set in the asphalt overlay 3, the steel bar embedded part 2 includes the upper cross The rod 21, the lower cross rod 22 and the vertical rod 23. The upper cross rod 21 and the lower cross rod 22 are in parallel ...

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Abstract

The invention discloses a carbon fiber cloth composite concrete bridge deck seamless expansion joint. Concrete bridge deck slabs are arranged below an asphalt paving layer; the concrete bridge deck slabs are arranged on the two sides of a groove; the lower ends of steel bar embedded parts are arranged in the concrete bridge deck slabs; the upper ends of the steel bar embedded parts are arranged inthe asphalt paving layer; the steel bar embedded parts comprise a left steel bar embedded part and a right steel bar embedded part; the steel plate is arranged between the left steel bar embedded part and the right steel bar embedded part, the steel plate is arranged above the groove, the U-shaped grooves are bilaterally symmetrical along two sides of the groove, PAN-based carbon fiber cloth is wound on the left steel bar embedded part and the right steel bar embedded part, and the rest parts outside the groove are expansion joint fillers. According to the structure construction method for enhancing the anti-reflection crack performance of the bridge seamless expansion joint starting from the source of crack generation, the high-elasticity high-modulus fiber cloth is used for bearing thetransverse tensile stress of the seamless expansion joint, generation and expansion of reflection cracks are prevented, and then reflection cracks of an additionally-laid asphalt surface layer are reduced or prevented.

Description

technical field [0001] The invention relates to the technical field of bridge and road engineering, in particular to a carbon fiber cloth composite concrete bridge deck seamless expansion joint. Background technique [0002] Compared with traditional expansion joints, seamless expansion joints have the advantages of alleviating bridge deformation, improving bridge deck smoothness and reducing driving noise. At present, the expansion joints of bridges in many regions or cities in my country are facing maintenance and renovation, and the most commonly used method is to use seamless expansion joints to replace traditional expansion joints. Due to the mechanical properties of the bridge seamless expansion joint itself, within a period of time, excessive temperature difference changes will cause reflection cracks to appear at the bottom of the elastic joint of the seamless expansion joint. Relevant studies have shown that the causes of reflection cracks in seamless expansion joi...

Claims

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Application Information

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IPC IPC(8): E01D19/06E01D19/08E01D101/30E01D101/26
CPCE01D19/065E01D19/067E01D19/083E01D2101/26E01D2101/266E01D2101/30
Inventor 徐勋倩杨威项宏亮杨霄顾钰雯周井玲洪俊青
Owner NANTONG UNIVERSITY
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