Method for machining shock-resistant self-locking type half grouting sleeve and method for machining concrete member

A technology of semi-grouting sleeves and processing methods, which is applied in the direction of building components, building reinforcements, structural elements, etc., which can solve the problems of large area of ​​reinforcement densification, difficult control of quality standards, sleeve wall thickness, etc., and achieve control of threaded connections quality, ease of threading quality, effect of increased shear strength

Inactive Publication Date: 2018-07-20
HEFEI CONSTR ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prefabricated concrete structure refers to the concrete structure assembled by prefabricated concrete components through a reliable connection method, and then the prefabricated concrete structure is integrated with the post-cast concrete and cement-based grouting materials on site to form an integrated concrete structure. Its core And the difficulty is the quality of the steel bar connection, that is, the existing technology and process are difficult to guarantee the coaxial butt joint of the steel bars to be connected. At present, non-shrinkage or micro-expansion cement-based grouting materials are usually poured into the semi-grouting or full-grouting sleeves to realize prefabricated components. The connection between them, but the existing construction technology is difficult to ensure that the sleeve is filled with grouting material, and it is difficult to ensure that the grouting is dense, and there is no effective technical means to detect the grouting density in the specific engineering construction. Therefore, the prefabricated building The development and use in areas with high seismic fortification requirements are limited. Therefore, in order to realize the universal applicability of prefabricated construction technology, it is necessary to address the above problems and improve the connection structure and construction technology in a targeted manner.
[0003] Due to the large geometric size of the full-grouting sleeve, the grouting workload is large, the construction is difficult, and the reinforcement area around the connection node is large. At present, half-grouting sleeves are commonly used

Method used

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  • Method for machining shock-resistant self-locking type half grouting sleeve and method for machining concrete member
  • Method for machining shock-resistant self-locking type half grouting sleeve and method for machining concrete member
  • Method for machining shock-resistant self-locking type half grouting sleeve and method for machining concrete member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Such as figure 1 , figure 2 , image 3 As shown, an anti-seismic assembled self-locking semi-grouting sleeve, including a sleeve 5, a steel pipe transition section 7, and a self-locking steel skeleton 4;

[0057] The sleeve 5 includes a non-grouting connection section 51 and a grouting connection section 52; the non-grouting connection section 51 is a conical cylindrical structure, and the grouting connection section 52 is a cylindrical structure; the small diameter end of the non-grouting connection section 51 and the grouting connection section 52 One end of the connection is connected, and the connection is rounded. One end of the grouting connection section 52 away from the non-grouting connection section 51 is provided with a grouting hole 521, and the other end extends a vent hole 511 toward the non-grouting connection section 51. The vent hole 511 can specifically be: Offer an air hole that is first vertical and then horizontal on the cone, and this air hole ...

Embodiment 2

[0065] A method for processing an anti-seismic assembled self-locking semi-grouting sleeve: comprising the following steps:

[0066] Step 1. Grouting sleeve 5 processing

[0067] The grouting sleeve 5 is processed by casting and integrally formed; one end is treated with internal thread, and multiple mounting holes are opened on the cylinder for standby;

[0068] Step 2. Steel pipe transition section 7 processing

[0069] Select a steel pipe of suitable length and thickness as the transition section 7 of the steel pipe; one end of the transition section 7 of the steel pipe is processed as an external thread for standby;

[0070] Step 3. Self-locking steel skeleton 4 processing

[0071] First, a plurality of longitudinal guiding steel bars 41 and a plurality of circumferential fixed steel rings 43 are welded into a cylindrical keel, and then a plurality of oblique steel branches 42 are radially and obliquely welded on multiple circular sections of the keel to form inner barbs...

Embodiment 3

[0075] A method for processing a prefabricated concrete member, comprising the following steps:

[0076] Step 1. Binding of reinforced skeleton of prefabricated concrete members

[0077] One end of the first steel bar 11 to be connected is bound and fixed with other steel bars to form a reinforced skeleton of the fabricated concrete member. The other end of the first steel bar to be connected is inserted into the rolling section 71 of the steel pipe transition section 7, and the steel pipe transition section 7 is realized by rolling machinery. The connection with the first steel bar 11 to be connected, so that the self-locking semi-grouting sleeve 5 is pre-installed in the reinforced skeleton of the prefabricated concrete member;

[0078] Step 2. Pouring of prefabricated concrete elements

[0079] Connect the plastic pipe 8 to the grouting hole 521 and the vent hole 511 on the side wall of the sleeve 5 and lead it out of the component formwork, then the concrete placing machi...

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PUM

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Abstract

The invention provides a method for machining a shock-resistant assembly self-locking type half grouting sleeve and a method for machining a concrete member. The method for machining the shock-resistant assembly self-locking type half grouting sleeve comprises the steps that (1) the grouting sleeve is machined in a casting mode and integrally formed, one end of the grouting sleeve is subjected toinner thread treatment, and a plurality of mounting holes are formed in a sleeve body for standby application; (2) one end of a steel pipe transition section is subjected to outer thread treatment forstandby application; (3) firstly, a plurality of longitudinal guiding steel bars and a plurality of circumferential fixing steel rings are welded to form cylindrical keels, then a plurality of inclined steel branches are welded on a plurality of annular sections of the keels in emissive and inclined modes to form inner barbs and outer barbs for standby application; and (4) assembly is conducted.All parts of the grouting sleeve are machined and manufactured correspondingly and then assembled, mass production is achieved, and the quality of all the parts is easy to control; connection of the grouting sleeve and the steel pipe transition section is operated by machines in a factory, the threaded connection quality is easy to control, a first to-be-connected steel bar and the steel pipe transition section directly adopt the rolling mode, thus the connecting working procedure is simple, and the lengths of the steel bar parts inserted into the sleeve are easy to control; and a self-lockingtype steel skeleton is adopted, so that pulling preventing is achieved.

Description

technical field [0001] The invention belongs to the field of prefabricated building construction, in particular to a processing method for an anti-seismic self-locking semi-grouting sleeve and a processing method for concrete components. Background technique [0002] From the perspective of the global environment, it is imperative for the construction industry to develop into prefabricated construction. The continuous progress of prefabricated concrete building construction technology provides a technical basis for improving the performance of prefabricated prefabricated structures and realizing the housing industry. The prefabricated concrete structure refers to the concrete structure assembled by prefabricated concrete components through a reliable connection method, and then the prefabricated concrete structure is integrated with the post-cast concrete and cement-based grouting materials on site to form an integrated concrete structure. Its core And the difficulty is the ...

Claims

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Application Information

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IPC IPC(8): E04C5/18
CPCE04C5/18
Inventor 郑志涛刘国福王玉国
Owner HEFEI CONSTR ENG GRP
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