Half-thread glue injection type connecting sleeve design method, thread glue injection type steel bar connecting sleeve, and mounting method thereof

A technology for connecting sleeves and connecting sleeves of steel bars, applied in structural elements, building components, building reinforcements, etc., can solve problems such as safety accidents, difficulty in adopting, and difficulty in controlling and detecting grouting quality

Inactive Publication Date: 2021-05-07
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently commonly used steel connectors such as straight thread sleeves, tapered thread sleeves, grouting sleeves, and extruded sleeves have various deficiencies in practical engineering applications: (1) Straight thread sleeves or tapered thread sleeves must ensure that At least one connecting steel bar can move and rotate freely, so it cannot be applied to the connection between two steel bars that have been fixed separately; (2) Extrusion sleeve connection cons

Method used

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  • Half-thread glue injection type connecting sleeve design method, thread glue injection type steel bar connecting sleeve, and mounting method thereof
  • Half-thread glue injection type connecting sleeve design method, thread glue injection type steel bar connecting sleeve, and mounting method thereof
  • Half-thread glue injection type connecting sleeve design method, thread glue injection type steel bar connecting sleeve, and mounting method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The outer surface of the steel sleeve (1) is an equilateral octagonal prism face, and the opposite side dimension is 44mm, and the length of the thread matched with the first steel bar (2) is 70mm, and the length of the thread matched with the second steel bar (3) is 25mm. And set a horn-shaped opening with a length of 10mm, the total length of the steel sleeve is 120mm; the longitudinal slope of the cone surface of the horn-shaped opening is 1:2; the thread corresponding to the steel sleeve and the first steel bar (2) is Tr28 trapezoidal thread, and the tooth type adopts Tr28X3 Trapezoidal thread specification, the width of the thread groove bottom is 4.1mm, the pitch is 6mm, and the lead is 6mm; The distance is 6mm; the inner middle side of the steel casing (1) is provided with a 3mm diameter circular glue injection hole 11;

[0030] The first steel bar (2) is a ribbed steel bar with a diameter of 25. The external thread is processed after the pier head at the end. Th...

Embodiment 2

[0040] The outer surface of the steel sleeve (1) is an equilateral hexagonal prism, and the opposite side dimension is 36mm. The length of the thread matched with the first steel bar (2) is 50mm, and the length of the thread matched with the second steel bar (3) is 20mm. The total length of the sleeve is 80mm; the thread corresponding to the steel sleeve and the first steel bar (2) is Tr23 trapezoidal thread, the tooth type adopts Tr23X3 trapezoidal thread specification, the width of the bottom of the thread groove is 4.1mm, the pitch is 6mm, and the lead is 6mm; The double-line trapezoidal thread corresponding to the steel sleeve and the second steel bar (3) is Tr29×6 (P3), the pitch is 3mm, and the lead is 6mm; the inner middle side of the steel sleeve (1) is provided with a 3mm diameter circular glue injection hole 11;

[0041] The first steel bar (2) is a ribbed steel bar with a diameter of 20. The external thread is processed after the pier head at the end. The length of ...

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PUM

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Abstract

The invention discloses a half-thread glue injection type connecting sleeve design method, a half-thread glue injection type steel bar connecting sleeve, and a mounting method thereof. The half-thread glue injection type connecting sleeve is formed by combining a steel sleeve, two steel bars with threads at the ends, and an adhesive. One end of the inner surface of the steel sleeve and the outer surfaces of the ends of the corresponding reinforcing steel bars are machined into threads which are in weak engagement. After the steel sleeve is screwed with the two reinforcing steel bars, internal gaps between the steel sleeve and the reinforcing steel bars are filled with the adhesive, and the two reinforcing steel bars are connected into a whole after the adhesive is cured. Thread pitch of the weak occlusion threads is long, and thread teeth are narrow, so that the steel sleeve can connect two steel bars at any interval, and the other ends of the weak occlusion threads are in weak occlusion connection. After the gaps between the steel sleeve and the weakly-engaged reinforcing steel bars are filled with the adhesive, the strong connection between the two reinforcing steel bars by the connecting sleeve can be realized; and the required connecting strength index can be met by adjusting the length of a connecting thread section between the steel sleeve and the weakly-engaged steel bars.

Description

technical field [0001] The application belongs to the technical field of civil engineering and mechanical engineering, and in particular relates to a half-thread glue-injection steel bar connecting sleeve and an installation method thereof. Background technique [0002] In the process of civil engineering construction, it is necessary to reliably connect two independent steel bars, exposed steel bars of two-section fabricated components, and steel bars in two-section steel cages. Currently commonly used steel connectors such as straight thread sleeves, tapered thread sleeves, grouting sleeves, and extruded sleeves have various deficiencies in practical engineering applications: (1) Straight thread sleeves or tapered thread sleeves must ensure that At least one connecting steel bar can move and rotate freely, so it cannot be applied to the connection between two steel bars that have been fixed separately; (2) Extrusion sleeve connection construction requires large hydraulic t...

Claims

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Application Information

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IPC IPC(8): E04C5/16E04C5/18
CPCE04C5/165E04C5/18
Inventor 黄庆华
Owner TONGJI UNIV
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