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Asphalt concrete seamless retractor device and construction method thereof

An asphalt concrete, seamless expansion and contraction technology, used in the erection/assembly of bridges, bridge parts, bridges, etc., can solve the problems affecting the bridge structure itself, the discomfort of bridge passers, and achieve good engineering application value, smooth driving and comfort. Good, well-designed effects

Active Publication Date: 2019-05-31
唐峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are small defects or deficiencies in the design and construction of the bridge expansion joint device, which will cause early damage, cause discomfort to bridge passers-by, and sometimes affect the bridge structure itself. Therefore, this invention proposes an asphalt concrete seamless expansion joint. Device and its construction method

Method used

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  • Asphalt concrete seamless retractor device and construction method thereof
  • Asphalt concrete seamless retractor device and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] refer to figure 1 , an asphalt concrete seamless expansion device of the present invention, comprising an asphalt concrete pouring layer 1, a seam span 2, an isolation layer 3 and a pavement transition zone 5, and the seam span 2 is laid between two bridge ends 7 or Above the expansion joint formed between the back wall of the abutment and the end of the bridge, the length of the seam span plate 2 exceeds the width of the expansion joint by not less than 4cm, and the pavement transition belt 5 is arranged on the bridge deck pavement layer to expand and contract in 6 directions. The side where the seam extends, the isolation layer 3 is laid on the bottom surface of the post-cast slot formed between the two pavement transition belts 5, the isolation layer 3 is arranged on the top surface of the seam-spanning plate 2, and the asphalt The concrete pouring layer 1 is arranged in the post-casting slot above the isolation layer 3, and the surface of the pavement transition zon...

Embodiment 2

[0028] refer to figure 2 The difference from Example 1 is that there is no asphalt layer 4, and the top surface of the pavement transition zone 5 and the asphalt concrete pouring layer 1 is flush with the top surface of the bridge deck pavement layer 6.

[0029] refer to figure 1 , a construction method of an asphalt concrete seamless expansion device, comprising the steps of:

[0030] Step 1. Pouring construction of the pavement transition zone 5: when the bridge deck pavement layer 6 is asphalt concrete, it is necessary to design a separate reinforcement design or section steel reinforcement design for the pavement transition zone 5, and to correct the corrugated surface on the side of the asphalt concrete Customized individual formwork is formed, and then the pavement transition zone 5 is cast in place, and the bridge deck asphalt concrete can be poured after the pavement transition zone 5 reaches the required strength; when the bridge deck pavement layer 6 is cement conc...

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Abstract

The invention discloses an asphalt concrete seamless retractor device and a construction method thereof. The asphalt concrete seamless retractor device comprises an asphalt concrete pouring layer, joint-crossing plates, an isolated layer and paving transition belts, wherein the joint-crossing plates are laid above an expansion joint formed between the ends of two bridges or between a bridge abutment back wall and the end of a bridge, the number of the joint-crossing plates is more than one, the length of the joint-crossing plates is larger than the width of the expansion joint, the paving transition belts are arranged at the sides, extending to the expansion joint, of bridge face paving layers, the isolated layer is laid on the bottom face of a rear pouring port formed by two paving transition belts, the isolated layer is arranged at the top faces of the joint-crossing plates, the asphalt concrete pouring layer is arranged in the rear pouring port above the isolated layer, and the surfaces of the sides, in contact with the asphalt concrete pouring layer, of the paving transition belts are set in a wave shape. The asphalt concrete seamless retractor device and the construction method thereof have the advantages that the design is reasonable, the construction is convenient, under the condition of satisfying the telescopic deformation of a bridge structure, the driving comfort isimproved, the repair and maintenance of a telescopic device are reduced, and the engineering application value is good.

Description

【Technical field】 [0001] The invention relates to the technical field of bridge engineering expansion joint design and construction, in particular to an asphalt concrete seamless expansion device and a construction method thereof. 【Background technique】 [0002] With the rapid development of my country's economy, the traffic volume of roads has increased sharply, the speed of vehicles on roads and the load of vehicles have continued to increase, and people's requirements for driving comfort have become higher and higher. Therefore, in the past, insufficient attention was paid to bridge design and construction. The problems related to the expansion joint device, such as the damage of the expansion joint, the blockage of the slot, the jamming and the fracture of the expansion joint, the driving safety accidents, the corrosion of the anchor head of the prestressed steel bar and the water damage of the support, etc., have become more and more serious. protrude. [0003] The expan...

Claims

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Application Information

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IPC IPC(8): E01D19/06E01D21/00
Inventor 唐峰
Owner 唐峰
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