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A three-dimensional fiber grid bar reinforced concrete structure

A technology of fiber grid bars and reinforced concrete, which is applied in the field of plate members, three-dimensional fiber grid bars reinforced concrete structural parts, and beams. It can solve the problems of limited increase in bearing capacity, electromagnetic signal interference, and large capacity, and achieve weight reduction, Effect of increasing tensile and flexural strength

Active Publication Date: 2016-03-23
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ordinary concrete is a brittle material with poor tensile and bending properties and a large volume
Although conventional reinforced concrete has improved a lot of its defects, after the concrete cracks, the steel bars are easy to corrode and the bulk density is also large, especially in the harsh environment of marine corrosion and other reinforced concrete components, after the steel bars are corroded, the concrete components are easy to crack; and There are metal materials in reinforced concrete members, which are easy to interfere with electromagnetic signals
However, if chopped fibers are used to reinforce concrete, the chopped fibers are prone to agglomeration and uneven dispersion in the concrete matrix, and the short fibers can only increase the bearing capacity of concrete components to a limited extent.

Method used

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  • A three-dimensional fiber grid bar reinforced concrete structure
  • A three-dimensional fiber grid bar reinforced concrete structure
  • A three-dimensional fiber grid bar reinforced concrete structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 , 2 , Shown in 5 and 6: the three-dimensional fiber grid bar reinforced concrete structure of the present invention, it comprises two layers of fiber grid bars 2, the fiber grid bars 2 adopts grid rib 10mm, mesh side length 90mm, thickness 5mm. The bottom fiber grid bars 2 are 100mm away from the bottom surface of the concrete 1, and the upper layer fiber grid bars 2 are 80mm away from the top surface of the concrete 1. The two layers of fiber grid bars 2 are connected by connecting rods 3, and the connection direction is vertical. The connecting rod 3 is in the form of a "bow" rod 5, and the "bow" rod 5 is connected to the fiber mesh bar 2 through the "bow" rod elbow 7 and structural glue, and the concrete 1 is ordinary concrete.

Embodiment 2

[0027] Such as image 3 and 4 As shown, the three-dimensional fiber grid bars reinforced concrete structure of the present invention includes fiber grid bars 2, and the fiber grid bars 2 adopts grid ribs of 15 mm, mesh side length of 135 mm, and thickness of 6 mm. The bottom layer of fiber grid bars 2 is 80mm away from the bottom surface of concrete 1, the upper layer of fiber grid bars 2 is 80mm away from the top surface of concrete 1, and the two layers of fiber grid bars 2 are connected by connecting rods 3. The form of the connecting rod 3 adopts the form of the bolt rod 4. When the connection direction is vertical: the bolt rod 4 and the reserved hole 6 on the fiber mesh rib 2 are bonded with structural glue. When the connection direction is oblique: the bolt rod 4 It is directly connected to the fiber grid reinforcement 2 through structural glue, and the concrete 1 is made of epoxy resin concrete.

Embodiment 3

[0029] Such as Figure 7 and 8 As shown, the three-dimensional fiber grid bars reinforced concrete structure of the present invention includes fiber grid bars 2, and the fiber grid bars 2 adopts grid ribs of 10 mm, mesh side length of 90 mm, and thickness of 5 mm. The bottom fiber grid bars 2 are 100mm away from the bottom surface of the concrete 1, the upper fiber grid bars 2 are 80mm away from the top surface of the concrete 1, and the two layers of fiber grid bars 2 are connected by connecting rods 3. The form of the connecting rod 3 adopts the form of the "I" character rod 8, and the "I" character rod 8 is connected with the fiber grid bar 2 through structural glue, and the concrete 1 adopts steel fiber concrete.

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Abstract

The invention discloses a three-dimensional fiber gird bar reinforced concrete structural part, which comprises concrete and fiber grid bars, wherein the fiber grid bars are arranged in the concrete and fall into double layers or multiple layers; every two adjacent layers of the fiber grid bars are connected through connecting rods; and the connecting direction is the vertical direction or the inclined direction. The three-dimensional fiber gird bar reinforced concrete structural part has the advantages that one three-dimensional fiber grid bar is added in the concrete structural part, so the tensile strength, the bending strength, the toughness and the crack-resistant performance of the concrete structural part can be improved; the weight can also be reduced; corrosion resistance and electromagnetic interference prevention are achieved; and the three-dimensional fiber gird bar reinforced concrete structural part is applicable to the fields of bridges, pavements, buildings and the like.

Description

technical field [0001] The invention relates to the technical field of concrete structures, in particular to a three-dimensional fiber grid reinforced concrete structure, which is especially suitable for beams and slabs, and can be used in structures such as road decks, bridge decks, steel bridge deck pavement, and building beam-slab columns. Background technique [0002] Ordinary concrete is a brittle material with poor tensile and bending properties and a large volumetric capacity. Although conventional reinforced concrete has improved a lot of its defects, after the concrete cracks, the steel bars are easy to corrode and the bulk density is also large, especially in the harsh environment of marine corrosion and other reinforced concrete components, after the steel bars are corroded, the concrete components are easy to crack; and There are metal materials in reinforced concrete members, which are easy to interfere with electromagnetic signals. However, if chopped fibers a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C5/07E04C5/20
Inventor 方海刘伟庆钱震庄勇
Owner NANJING TECH UNIV