Concrete bridge crack reinforcement device

A reinforcement device and concrete technology, which is applied in the direction of bridge reinforcement, bridge, bridge maintenance, etc., can solve the problems of low tensile strength, formwork, support is not fixed firmly, and water evaporates too fast, so as to achieve good reinforcement performance and increase the scope of use , the effect of its own firm structure

Pending Publication Date: 2018-04-20
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the concrete material itself has defects such as easy shrinkage and cracking, low tensile strength, etc., resulting in a large number of bridge diseases in the later use of concrete bridges, and bridge cracks are one of the main causes of diseases, and the reasons for cracks are various. , mainly divided into three types: temperature cracks, shrinkage cracks and cracks caused by external forces. The main reasons are uneven settlement of the foundation under the structure and components; the formwork and support are not fixed firmly; the concrete is subjected to severe vibration when the formwork is removed; the environment or concrete The temperature difference between the surface and the interior is too large; the concrete is poorly cured and the water in it evaporates too quickly, etc.
[0003] At present, there are many reinforcement devices for concrete bridges, but the current reinforcement devices have the following disadvantages: 1. They cannot be installed quickly, especially for some bridges, which have many cracks and a large amount of construction. The geographical location of the bridge is not suitable for on-site installation with a large workload; 2. The use is not flexible, and the device cannot be adjusted according to the size of the crack, resulting in a single purpose of the reinforcement device

Method used

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  • Concrete bridge crack reinforcement device
  • Concrete bridge crack reinforcement device
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Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1: as figure 1 and figure 2 It shows that a reinforcement device for concrete bridge cracks according to the present invention includes a fixed body, a curved rod 1 and a mounting piece, the curved rod 1 is arranged at both ends of the fixed body, and the fixed body is respectively connected to one end of the curved rod 1 through the first nut 3 , the other end of the bent rod 1 is connected with the mounting part 2 through the second nut 4 . Such as image 3 As shown, the bending rod is bent at 90°. Such as Figure 4 As shown, the two ends of the bent rod contain key grooves, which allow positioning and rotation of the first nut 3 and the second nut 4, and the key grooves are used to limit the axial displacement of the nuts. The mounting part is composed of a bolt 21, an expansion tube 22, a hex nut 23, a spring washer 24 and a flat washer 25 connected in sequence, and forms a detachable connection with the second nut 4. In this embodiment, the mounting...

Embodiment 2

[0027] Embodiment 2: as Figure 8 As shown, when the crack of the bridge is large, the fixing device fixes the anchor rod 8 in the middle of the cylindrical casing 5; the anchor rod and the cylindrical casing are connected by detachable threads, and the other end of the anchor rod extends to the bottom of the crack. The anchor rod can play a better role in supporting the crack.

Embodiment 3

[0028] Embodiment 3: as Figure 8 The shown anchor rod is provided with reinforcing ribs 9, and the reinforcing ribs 9 are welded on the anchor rod 8. The reinforcing ribs are divided into transverse ribs and longitudinal ribs. The anchor rods are parallel, and the longitudinal ribs are arranged equidistantly. When the cracks are large, the device of the present invention adds anchor rods and reinforcing ribs, and pours concrete into the cracks, so that the cracks can be further repaired and the service life of the bridge can be increased.

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Abstract

The invention discloses a concrete bridge crack reinforcement device which comprises a fixing body, bending rods and a mounting part. The bending rods are arranged at two ends of the fixing body, thefixing body is connected with one end of each bending rod through a first nut, the other end of the bending rod is connected with the mounting part through a second nut, the fixing body comprises a cylinder type sleeve and adjusting rods positioned at two ends of the sleeve, and the cylinder type sleeve is connected with the adjusting rods in a threaded manner. Time and labor are saved when the reinforcement device is mounted, an overall implementation process is safe and convenient, and the reinforcement device is application to reinforcement of concrete bridge cracks. The device is particularly applicable to bridge plates with fewer cracks, convenient in construction and low in cost.

Description

technical field [0001] The invention relates to a concrete bridge, in particular to a concrete bridge reinforcing device. Background technique [0002] Concrete has the characteristics of abundant raw materials, low price and high compressive strength, so its usage is increasing. Reinforced concrete bridges are the main structural form of bridges at present. However, the concrete material itself has defects such as easy shrinkage and cracking, low tensile strength, etc., resulting in a large number of bridge diseases in the later use of concrete bridges, and bridge cracks are one of the main causes of diseases, and the reasons for cracks are various. , mainly divided into three types: temperature cracks, shrinkage cracks and cracks caused by external forces. The main reasons are uneven settlement of the foundation under the structure and components; the formwork and support are not fixed firmly; the concrete is subjected to severe vibration when the formwork is removed; the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00
CPCE01D22/00
Inventor 谢发祥缪亚丽谢民滇陈欣高翔吉伯海
Owner HOHAI UNIV
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