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Prestressed distributed anchoring device and method for concrete bridge

An anchoring device, distributed technology, applied in the direction of bridge reinforcement, bridges, bridge materials, etc., can solve problems such as bridge vibration and inability to guarantee the quality of colloidal construction, and achieve the effects of prolonging service life, obvious reinforcement effect, and uniform force

Active Publication Date: 2021-09-28
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the conventional viscose process can realize the reinforcement of the bridge without interrupting the traffic, it is worth noting that: the live load of the vehicle will cause the bridge to vibrate, and the colloidal construction quality cannot be guaranteed during the colloidal solidification process

Method used

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  • Prestressed distributed anchoring device and method for concrete bridge
  • Prestressed distributed anchoring device and method for concrete bridge
  • Prestressed distributed anchoring device and method for concrete bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In a typical implementation of the present application, such as figure 1 As shown, the present embodiment first proposes a bridge reinforcement device, including a mechanical anchor and a carbon fiber plate. The mechanical anchor is composed of a bottom steel plate and a top steel plate, 2 connecting bolts and 2 supporting pre-tightening nuts.

[0038] The bottom steel plate 7 and the top steel plate 8 are parallel to each other, and there is a gap between them; the carbon fiber plates pass through the gap in turn, and are bonded together with the bottom steel plate 7 and the top steel plate 8; the two connected One end of the bolt 6 is connected to the bottom steel plate 7 by welding, and the other end passes through the bolt hole (anchor connection hole 11) reserved in the top steel plate 8, and the side of the carbon fiber plate is pre-tightened by the pre-tightening nut 9, and the bolt is connected. 6 to ensure greater than the width of the carbon fiber plate 2; the...

Embodiment 2

[0044] Based on the above-mentioned device, this embodiment proposes a method for quickly strengthening bridges with distributed mechanical anchorage carbon fiber plates, including the following steps:

[0045] Step 1: If figure 1 figure 2 As shown, the distributed mechanical anchor 4 and the carbon fiber plate 3 are prefabricated and assembled in the factory according to the design drawings.

[0046] Step 2: If image 3 As shown, according to the design drawings, the base concrete is partially cut at the predetermined location of the distributed mechanical anchor 4 in the beam body, and a groove is reserved for installing the bottom steel plate 7 of the anchor, and the thickness of the groove is consistent with the thickness of the bottom steel plate 7. The bottom steel plate 7 is properly installed in the beam body of the beam 1 to be strengthened, so as to ensure that the carbon fiber plate 2 closely adheres to the concrete surface. According to the design drawings, hol...

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Abstract

The invention discloses a prestressed distributed anchoring device and method for a concrete bridge, which includes a mechanical anchor and a carbon fiber plate. The mechanical anchor is composed of a bottom steel plate and a top steel plate, connecting bolts and matching pre-tightening nuts. The bottom steel plate and the top steel plate are parallel to each other, and there is a gap between them; the carbon fiber plates pass through the gap in turn, and are bonded together with the bottom steel plate and the top steel plate; one end of the connecting bolt is welded to the bottom steel plate The other end passes through the bolt hole reserved on the top steel plate, and the side of the carbon fiber plate is pre-tightened through the pre-tightening nut; the bottom steel plate is smaller in length than the top steel plate, and the top steel plate also reserves There are 2 beam body chemical bolts passing through the holes, which are matched with the chemical bolts pre-implanted on the beam to be strengthened.

Description

technical field [0001] The invention relates to the technical field of bridge reinforcement construction, in particular to a prestressed distributed anchoring device and method for concrete bridges. Background technique [0002] At present, the commonly used bridge reinforcement methods mainly include pasting carbon fiber plate reinforcement, pasting steel plate reinforcement, and enlarging the cross-section. Among them, the pasting carbon fiber plate reinforcement method has very obvious advantages. It has been widely used in engineering, and the characteristics of carbon fiber plate reinforcement: ① high strength, high elastic modulus, thin thickness, light weight; ② material can be any length, any cross, adapt to any curved surface and any shape structure; ③ corrosion resistance Good; ④On-site construction operation is convenient, and has a very high engineering promotion and application value. However, existing studies have found that if the carbon fiber plate is direct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D22/00E01D19/14E01D101/30
CPCE01D19/14E01D22/00E01D2101/30
Inventor 周磊生张峰朱世超高华睿刘金义胡超迟朝明夏建平张轩瑜
Owner SHANDONG UNIV