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

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
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Example Embodiment

[0044] Example one.

[0045] Such as figure 1 Shown.

[0046] A composite material bridge pier reinforcement method, which includes the following steps:

[0047] (1) The fiber material is three-dimensionally knitted into a round or rounded rectangular sleeve with a height of not less than 10 cm (preferably 10-50 cm) with an opening. The inner wall of the sleeve is a ring-shaped reinforcing 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 maximize the actual requirements.

[0048] (2) Sleeve the composite material sleeve as a permanent template on the surface of the bridge pier, pour concrete (preferably epoxy mortar) between the sleeve and the outer wall of the existing bridge pier, so that the sleeve and the pier are connected as a whole, and the sleeve is strengthened Ribs can greatly improve the adhesio...

Example Embodiment

[0054] Example two.

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

[0056] A bridge pier reinforcement device, which includes a plurality of 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 a hybrid woven of the above fibers. Different angles and colors can be used when weaving. The sleeve 2 is sleeved 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 woven by a three-dimensional weaving process, and it has an opening 3 that is convenient to fit on the pier (such as image 3 ), the opening 3 of each sleeve 2 should be provided with lap edges ( figure 1 b) The width of the overlapping edges is about 5 cm. The overlapping edges can be connected by bonding so that the sleeve forms an integral annular structure. The inner wall of each sleeve 2 is provided with a conv...

Example Embodiment

[0062] Example three.

[0063] Such as Figure 7-12 Shown.

[0064] A bridge pier reinforcement device, which includes a plurality of 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 a hybrid woven of the above fibers. Different angles and colors can be used when weaving. The sleeve 5 is sleeved on the rectangular pier 4 ( Picture 8 ), an epoxy mortar protective layer 10 is cast between the pier 4 and the sleeve 5 ( figure 1 a. Picture 8 ), the composite material sleeve 5 is woven by a three-dimensional weaving process, and it has an opening 6 (such as Figure 7 , 8 ), the opening 6 of each sleeve 5 should be provided with lap edges ( figure 1 a, 8) The width of the overlapping edges is about 5 cm. The overlapping edges can be connected by bonding so that the sleeves form an integral ring structure. The inner wall of each sleeve 5 is provided with a rais...

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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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