Oblique prestress bridge deck pavement structure and construction method thereof

A bridge deck pavement and construction method technology, which is applied to bridges, bridge parts, bridge materials, etc., can solve the problems of easy cracking of reinforced concrete pavement layer and unreliable performance of reinforced concrete bridge deck structure, and achieve the improvement of stress shape , increase the strength, increase the effect of force range

Pending Publication Date: 2020-05-08
陕西路桥集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the reinforced concrete pavement layer in the prior art is easy to crack and easily cause the unreliable performance of the reinforced concrete bridge deck structure, and provides a kind of oblique prestressed bridge deck pavement structure and its construction method

Method used

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  • Oblique prestress bridge deck pavement structure and construction method thereof
  • Oblique prestress bridge deck pavement structure and construction method thereof
  • Oblique prestress bridge deck pavement structure and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0070] Please refer to figure 1 As shown, a kind of oblique prestressed bridge deck pavement structure of the present embodiment comprises: concrete; The prestressed tendon pavement layer, the prestressed tendon adopts a steel strand with a diameter of 15.2mm; the structural steel bar 3, along the height direction, the structural steel bar 3 is horizontally arranged in the oblique prestressed tendon pavement layer, and the The structural reinforcement 3 is parallel to the long side of the oblique prestressed tendon pavement layer; the stirrup 4 is used to fix the structural reinforcement 3 and is perpendicular to the structural reinforcement 3.

[0071] Compared with the existing technology, the oblique prestressed bridge deck pavement structure of this scheme includes concrete, prestressed tendons, structural steel bars 3 and stirrups 4, and the oblique prestressed bridge structure is formed by prestressed tendons, structural steel bars 3 and stirrups 4. The basic skeleton s...

Embodiment 2

[0076] An oblique prestressed bridge deck pavement structure of this embodiment, compared with Embodiment 1, further, a beam plate is arranged under the oblique prestressed tendon pavement layer, and the beam plate is passed through a steel bar. The frame 8 is fixed with the oblique prestressed tendon pavement layer as a whole, which increases the strength of the bridge and effectively prolongs the service life of the bridge deck pavement structure; the steel frame 8 is an inverted U-shaped structure, and the inverted The U-shaped structure is arranged at the intersection of the upper layer prestressed tendons 6 and the lower layer prestressed tendons 5 at intervals, the upper part of the inverted U-shaped structure is respectively fixed with the upper layer prestressed tendons 6 and the lower layer prestressed tendons 5, and the lower part is fixed with the beam plate Fix it to ensure that the upper prestressed tendon 6 is 5.5cm away from the oblique prestressed tendon pavemen...

Embodiment 3

[0082] A kind of oblique prestressed bridge deck pavement structure of the present embodiment, compared with embodiment 2, further, combines Figure 4, also includes plate end reinforcing bars 7, the plate end reinforcing bars 7 are arranged at both ends of the bridge, and are arranged below the prestressed tendons, and the plate end reinforcing bars 7 are 30×30cm Single-layer steel mesh, and the diameter of the steel bar is 8mm.

[0083] Add plate end reinforcing steel bars 7 at both ends of the bridge, and set the plate end reinforcing steel bars 7 below the lower prestressed tendons 5. Due to the relatively large stress on the two ends of the bridge, additional The reinforcing bar 7 at the end of the slab consolidates the two ends of the bridge to prevent cracking at the two ends of the concrete. In addition, the slab end reinforcing steel bar 7 is designed as a 30×30cm single-layer steel mesh, and the diameter of each steel bar is 8mm. Dispersion increases the strength o...

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Abstract

The invention relates to the field of highway bridge construction, in particular to an oblique prestress bridge deck pavement structure and a construction method thereof. The oblique prestress bridgedeck pavement structure comprises concrete; multiple prestressed tendons which are horizontally laid and obliquely arranged with the length direction of the bridge deck as the reference to form an oblique prestressed tendon pavement layer, wherein steel strands with the diameter being 15.2 mm are adopted as the prestressed tendons; constructional steel bars which are transversely arranged in the oblique prestressed reinforcement pavement layer in the height direction, and parallel to the long edge of the oblique prestressed reinforcement pavement layer; and stirrups which are used for fixing the constructional steel bars and are perpendicular to the constructional steel bars. By the adoption of the oblique prestress bridge deck pavement structure and the construction method thereof, the problems that in the prior art, a reinforced concrete pavement layer is prone to cracking, and unreliable performance of a reinforced concrete bridge deck structure is prone to being caused are solved.

Description

technical field [0001] The invention relates to the field of highway bridge construction, in particular to an oblique prestressed bridge deck pavement structure and a construction method thereof. Background technique [0002] Bridge deck pavement is an important part of the bridge traffic system. On the one hand, it can disperse the load and participate in the force of the bridge deck. On the other hand, the quality and durability of the bridge deck pavement directly affect the safety of traffic. , comfort, durability and investment benefits of the bridge have a great influence on the performance of the bridge. At present, the deck pavement of highway concrete girder bridges generally adopts a structure of 8cm reinforced concrete pavement + 10m asphalt layer, but the reinforced concrete pavement is prone to cracking, which will cause damage to the pavement, which will seriously affect the performance of the reinforced concrete bridge deck. Durability and structural reliabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/12E01D21/00E01D101/28
CPCE01D19/125E01D21/00E01D2101/28
Inventor 任万鹏朱其涛秦杰杨武策陈超贾旭斌
Owner 陕西路桥集团有限公司
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