Grout sleeve with function of coordination deformation with concrete for prefabricated components

A technology of prefabricated components and grouting sleeves, applied to building components, structural elements, building reinforcements, etc., can solve problems such as structural damage, large cracks in concrete components, hindering the coordinated deformation of concrete and steel bars, etc., and reduce the shear capacity , the effect of reducing the axial stiffness

Inactive Publication Date: 2018-04-10
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the existing grouting sleeve is that the part where the two parts of the concrete member is connected is reinforced at the same time, which hinders the coordinated defo

Method used

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  • Grout sleeve with function of coordination deformation with concrete for prefabricated components
  • Grout sleeve with function of coordination deformation with concrete for prefabricated components
  • Grout sleeve with function of coordination deformation with concrete for prefabricated components

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1:

[0025] Such as figure 1 As shown, a grouting sleeve for a prefabricated component that is deformed in coordination with concrete includes a sleeve body 3, the sleeve body 3 is provided with a grouting port 1 and a grout outlet 2, and the sleeve body 3 A convex groove 5 and a reinforcing rib 4 are provided on the side wall.

[0026] Made of nodular cast iron, the sleeve body 3 has a total length of 240mm and is used to connect steel bars with a diameter of 12mm. The sleeve body 3 has an inner diameter of 26mm and a barrel shape. The outer wall is provided with a convex groove 5, the wall thickness of the convex part is 5mm, and the concave part wall The thickness is 1mm, the protruding part is perpendicular to the circumference of the sleeve and surrounds the sleeve, each section is 10mm wide along the axis, and the groove is 2mm wide along the axis. In order to avoid the stress concentration affecting the strength of the sleeve, a smooth arc can be used near th...

Example Embodiment

[0028] Example 2:

[0029] Such as figure 2 As shown, a grouting sleeve made of two materials with a total length of 240mm is used to connect steel bars with a diameter of 12mm. The sleeve body 3 is a PVC drum with an inner diameter of 26mm and a thickness of 2mm. The convex groove 5 is a PVC cylinder with multiple sections of steel at the end of the vertical circumference, the steel wall thickness is 5mm, each section is 10mm wide along the axis, and a gap of 2mm wide is left between each section of the steel.

[0030] In this embodiment, vertical reinforcing ribs 4 are provided. The reinforcing ribs 4 have a width of 5 mm and a thickness of 4 mm, and are evenly distributed along the outside of the sleeve. The reinforcing rib material can be metal or carbon fiber. The reinforcing ribs can be evenly distributed along the circumference of the sleeve or non-uniformly distributed throughout the sleeve to meet the different requirements for the tensile force of the sleeve.

Example Embodiment

[0031] Example 3:

[0032] Such as image 3 As shown, a grouting sleeve made of ductile cast iron with a total length of 320mm is used to connect steel bars with a diameter of 16mm. The inner side of the sleeve is in the shape of a barrel with a diameter of 30mm. The wall thickness of the inlet part is 1mm, and the protruding part is perpendicular to the circumference of the sleeve to surround the sleeve, each section is 10mm wide along the axis, and the groove is 2mm wide along the axis. In order to avoid the stress concentration affecting the strength of the sleeve, a smooth arc can be used near the junction of the concave and convex parts.

[0033] In order to increase the vertical rigidity of the sleeve, a vertical stiffening rib 4 is added in this case. The reinforcing ribs 4 have a width of 5 mm and a height of 4 mm, and are evenly distributed along the outside of the sleeve.

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Abstract

The invention relates to the field of civil construction engineering, in particular to a grout sleeve with a function of coordination deformation with concrete for prefabricated components. The groutsleeve comprises a sleeve body, a grouting port and a grout outlet are formed in the sleeve body, and a convex groove and a reinforcing rib are arranged on the side wall of the sleeve body. Under thepremise that the ring rigidity of the sleeve is not affected basically, the grout sleeve with the decreased vertical rigidity and shearing rigidity can be used for a connecting position of the concrete prefabricated components. The rigidity of the positions, at the sleeve, of the prefabricated components (plate, beam, column and the like) is prevented from being increased excessively, component deformation is prevented from being excessively concentrated on concrete of the two ends of the sleeve accordingly, and a large crack is prevented from occurring to the concrete at the two ends of the sleeve; and the phenomena of short columns and deep beams can also be avoided.

Description

technical field [0001] The invention relates to the field of civil construction engineering, and more particularly relates to a grouting sleeve for a prefabricated component that deforms in harmony with concrete. Background technique [0002] In the traditional cast-in-place concrete structure, the steel bars are often connected by mechanical connection methods such as lap joints, welded joints or extrusion sleeves. The construction of the steel bar connection is relatively complicated, and the steel bar connection must be completed before pouring the concrete, which cannot The connection of steel bars between prefabricated parts makes it impossible to carry out prefabricated construction. [0003] The grouting sleeves currently used in the connection of concrete prefabricated components are all solid sleeves, such as figure 1 shown. The disadvantage of the existing grouting sleeve is that the part where the two parts of the concrete member is connected is reinforced at th...

Claims

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Application Information

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IPC IPC(8): E04C5/16
CPCE04C5/165
Inventor 于国友苗青
Owner DONGGUAN UNIV OF TECH
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