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Aluminium alloy bridge expansion and cotraction device and its manufacturing method

A technology of a telescopic device and a manufacturing method, which is applied to bridges, bridge parts, bridge construction, etc., can solve the problems of poor anti-corrosion performance, complicated installation and construction, and long period, and achieve the effects of small structure width, rapid construction, and easy installation and construction.

Inactive Publication Date: 2004-07-21
上海金环工程橡胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, like the steel structure type telescopic device, there are defects such as poor anti-corrosion performance, cumbersome installation and construction, and long cycle time.

Method used

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  • Aluminium alloy bridge expansion and cotraction device and its manufacturing method
  • Aluminium alloy bridge expansion and cotraction device and its manufacturing method
  • Aluminium alloy bridge expansion and cotraction device and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] According to attached figure 1 , an aluminum alloy bridge telescopic device with a stretching amount of 80mm, the total width is 320mm, the structural height is 65mm, the height of the aluminum alloy side beam 1 is 62mm, and the two aluminum alloy side beams 1 are respectively installed on the telescopic ditch beam body At the position of the beam body where the gap is reserved, epoxy concrete 3 is poured in the transition section between the side beam and the bridge asphalt surface layer 5. Since the joint surface of the side beam 1 and the epoxy concrete 3 is designed to have a concave-convex cross-sectional structure, the epoxy concrete 3 The concrete is embedded in the cross-sectional structure of the side beams to form a great bonding force, so that they cannot move in three-dimensional directions up and down, left and right, and front and back. This reasonable concave-convex structural section does not depend on the size, but on the Depending on the available bond...

Embodiment 2

[0039] According to attached image 3 The two aluminum alloy side beams 1 are respectively installed on the positions of the beam body at the reserved gap of the expansion ditch beam body, and the transition section between the side beam and the bridge asphalt surface layer 5 is poured with rapid high-strength concrete 3, and the beam end where the telescopic device is installed needs to be Pre-embedded anchor bolts 7 are set, and the anchor bolts 7 are used to fix and connect the aluminum alloy anchor plate 6 with the wedge groove. The connection between the high-strength concrete and the aluminum alloy edge beam not only depends on the concave-convex structural section of the joint surface, but also relies on the whole of the wedge groove aluminum alloy anchor plate, so the mutual bonding force is increased. The shape of the expansion groove and the grade of the aluminum alloy material are the same as in Example 1.

Embodiment 3

[0041] According to attached Figure 4 Two aluminum alloy side beams 1 are respectively installed on the positions of the beam body at the reserved gap of the expansion ditch beam body, and the transition section between the side beam and the bridge asphalt surface layer 5 is poured with high-strength concrete 3, and steel fibers 8 are mixed into the concrete, The end of the beam where the telescopic device is installed needs to be pre-embedded and bent into a "冂"-shaped steel bar 9. After one end of the anchor bolt 7 is threaded with the aluminum alloy side beam on the concrete joint surface, the anchor bolt is welded to the pre-embedded "" when the other end is installed. 冂”-shaped steel bar 9, so that the connection between the aluminum alloy edge beam and the concrete depends on the concave-convex structural section of the joint surface on the one hand, and on the other hand relies on the anchor bolt 7 and the pre-embedded steel bar 9 to increase the bonding force and attach...

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Abstract

An Al-ally expansion joint for bridge is composed of the side beam to form the expansion slot of bridge, the transition concrete segment, and the anchor part for said side beam. It features that said side beam is made of Al-alloy for light weight, and high rigidity and anticorrosion performance, said transition segment is made of expoxy concrete or high-strength concrete, and the join interface between side beam and transition segment has concave-convex cross-section structure.

Description

1. Technical field: [0001] The invention relates to a bridge expansion device, in particular to an aluminum alloy bridge expansion device and a manufacturing method thereof. 2. Background technology: [0002] The bridge expansion device is the main component of the bridge deck structure. It plays a very important role in the smooth running of the vehicle, the service life of the bridge, and the landscape of the bridge deck. Its main function is to adapt to the displacement of the beam body due to temperature difference, concrete drying shrinkage and creep, and load, and to seal the joints to protect the structure under the bridge. Its main performance is in stretch performance, vehicle driving performance, waterproof performance and durability. [0003] At present, there are basically the following types of domestic bridge expansion devices: [0004] 1. Rubber type telescopic device [0005] This type of telescopic device began in the early 1980s, and it has various model...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/06
Inventor 曹志国刘学政刘建华
Owner 上海金环工程橡胶有限公司
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