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Bridge pier consolidating method and device

A bridge pier reinforcement and bridge pier technology, applied in the direction of bridge reinforcement, bridges, bridge parts, etc., can solve the problems of low reinforcement strength and complex process, and achieve the effects of convenient construction, good integrity, and easy transportation.

Inactive Publication Date: 2011-06-29
NANJING UNIV OF TECH
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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 invent a composite material bridge pier reinforcement method and its device based on the three-dimensional braiding technology, which not only reinforces the bridge pier, but also aims at the problems of low reinforcement strength and complicated process in the existing composite material reinforcement method. At the same time, it has a protective effect, making the bridge piers more durable, and improving and enhancing the ductility of concrete piers

Method used

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  • Bridge pier consolidating method and device
  • Bridge pier consolidating method and device
  • Bridge pier consolidating method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 shown.

[0046] A kind of composite material pier reinforcement method, it comprises the following steps:

[0047] (1) The fiber material is three-dimensionally woven into a circular or rounded rectangular sleeve with openings with a height of not less than 10 cm (preferably 10 to 50 cm). The inner wall of the sleeve is a ring-shaped rib 9, which can be It can be arranged longitudinally or horizontally along the inner wall, and can also be arranged irregularly. The height and spacing of the reinforcing ribs can be designed according to the stress situation to meet the actual requirements to the greatest extent.

[0048] (2) Put the composite material sleeve as a permanent formwork on the surface of the pier, pour concrete (preferably epoxy mortar) between the sleeve and the outer wall of the existing pier, so that the sleeve and the pier are connected as a whole, and the sleeve strengthens at the same time Ribs can greatly improve the cohesion of the ...

Embodiment 2

[0055] Such as Figure 2-6 , 12 shown.

[0056] A kind of bridge pier strengthening device, it comprises some circular hoop type composite material sleeves 2 (such as figure 2 ), the composite material can be a single glass fiber, carbon fiber, basalt fiber, aramid fiber, etc., or it can be mixed and woven from the above fibers. You can choose different angles and colors when weaving. The sleeve 2 is set on the pier 1, and an epoxy mortar protective layer 10 is cast between the pier 1 and the sleeve 2 ( figure 1 b), the composite material sleeve 2 is braided by a three-dimensional weaving process, and it has an opening 3 that is convenient for fitting on the pier (such as image 3 ), the opening 3 of each sleeve 2 should be provided with a lap edge ( figure 1 b), the width of the overlapping edges is about 5 cm, and the overlapping edges can be connected by bonding so that the sleeves form a whole ring structure, and the inner wall of each sleeve 2 is provided with a rais...

Embodiment 3

[0063] Such as Figure 7-12 shown.

[0064] A kind of bridge pier strengthening device, it comprises several rectangular hoop type composite material sleeves 5 (such as Figure 7 ), the composite material can be a single glass fiber, carbon fiber, basalt fiber, aramid fiber, etc., or it can be mixed and woven from the above fibers. You can choose different angles and colors when weaving. The sleeve 5 is set on the rectangular pier 4 ( Figure 8 ), an epoxy mortar protective layer 10 is cast between the pier 4 and the sleeve 5 ( figure 1 a. Figure 8 ), the composite material sleeve 5 is braided by a three-dimensional weaving process, and it has an opening 6 that is convenient to fit on the pier (such as Figure 7 , 8 ), the opening 6 of each sleeve 5 should be provided with a lap edge ( figure 1 a, 8), the width of the overlapping edges is about 5 cm, and the overlapping edges can be connected by bonding so that the sleeves form an overall ring structure, and the inner ...

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Abstract

The invention discloses a bridge pier consolidating method and a bridge pier consolidating device. The device is characterized by comprising a plurality of composite material sleeves of which the shape is matched with that of the cross section of the bridge pier; the sleeves are sleeved on the pier; an epoxy mortar protective layer is poured between the bridge pier and the sleeves; the sleeves are manufactured by a three-dimensional weaving process and have openings for convenient sleeving on the pier; the opening of each sleeve has an overlapped edge; the overlapped edges are connected by bonding, so that the sleeves form a whole annual structure; the inner wall of each sleeve has a raised annular rib structure; reinforcing ribs are poured in the epoxy mortar for reinforcing the bonding strength of the sleeves and the epoxy mortar; the openings of the adjacent sleeves form equal angles; each opening is bonded with a piece of strip fiber cloth along the height direction of the pier for covering the opening; and the pieces of strip fiber cloth connect the sleeves along the length direction of the pier into a whole structure. The device has the advantages of high strength, long service life and convenience for construction.

Description

technical field [0001] The present invention relates to a bridge pier reinforcement method and its device, in particular to a method and device for reinforcing bridge piers with composite materials, specifically to a method and device for reinforcing existing reinforced concrete and prestressed concrete bridge piers with composite materials. A bridge pier strengthening method and device for improving the seismic ductility and anti-collision performance of bridge piers. Background technique [0002] In recent years, there have been several major bridge accidents around the world. In 1994, the Seongsu Bridge in South Korea was catastrophically damaged. In 2007, the Minneapolis City Highway Bridge in the United States collapsed. In 1999, a large number of bridge piers were damaged in the Chiji earthquake in Taiwan, causing the bridge to collapse sideways. At the same time, with the rapid increase of traffic volume, there are more and more large-tonnage vehicles. Due to insuffic...

Claims

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Application Information

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IPC IPC(8): E01D22/00E01D19/02
Inventor 刘伟庆张建东王俊方海陆伟东赵慧敏
Owner NANJING UNIV OF TECH
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