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Design method of ultrahigh-strength steel sleeve for prefabricated concrete structure and grouting connection device

A concrete structure, prefabricated assembly technology, applied in the direction of design optimization/simulation, calculation, data processing applications, etc., can solve the problems of small sleeve inner diameter error, sleeve material consumption, disadvantages, etc., to achieve the function of restoring bearing capacity, super strong Flexibility, yield strength improvement effect

Inactive Publication Date: 2021-12-07
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing commonly used semi-grouting sleeve steel bar connection method has problems such as excessive cost of manufacturing sleeve materials, too small allowable sleeve inner diameter error, cumbersome factory threading connection process, and too small elongation of the connection node.
These problems are not conducive to the realization of "rapid assembly and high assembly rate" of prefabricated buildings, are not conducive to the realization of "resilient cities" in high-intensity areas, and are not conducive to the realization of the goal of "carbon peak, carbon neutrality"

Method used

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  • Design method of ultrahigh-strength steel sleeve for prefabricated concrete structure and grouting connection device
  • Design method of ultrahigh-strength steel sleeve for prefabricated concrete structure and grouting connection device
  • Design method of ultrahigh-strength steel sleeve for prefabricated concrete structure and grouting connection device

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Embodiment Construction

[0037]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0038] The invention provides a technical solution: a method for designing an ultra-high-strength steel sleeve for a prefabricated concrete structure, comprising the following steps:

[0039] S1: Refer to the design content of the prefabricated concrete structure, select the diameter of the steel bar that needs to be anchored, and determine the design value of the yield strength of the selected steel bar correspondingly. According to the design value of the compressi...

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Abstract

The invention discloses a design method of an ultrahigh-strength steel sleeve for a prefabricated concrete structure, and belongs to the technical field of prefabricated concrete structures. The design method comprises the following steps of calculating anchoring length needed by a stressed steel bar; determining the optimal wall thickness of the wall of an ultrahigh-strength sleeve; calculating the number and the size of shear keys; designing a welding end face and a welding process; the ultrahigh-strength steel sleeve is adopted, the yield strength of steel is greatly improved, the use amount of sleeve steel can be greatly reduced, emission of carbon dioxide in the steel production process is reduced, the designed sleeve size can greatly reduce the wall thickness of the sleeve, and under the condition that it is guaranteed that the outer diameter of the sleeve is not changed, the inner diameter of the ultrahigh-strength steel sleeve is larger than that of a common sleeve, the allowable error of the inner diameter of the sleeve is greatly increased, the mortar structure formed by pouring the super-hydrophobic flexible grouting material has super-high flexibility, the welding technology is adopted, and complex program steps are avoided.

Description

technical field [0001] The invention relates to the technical field of prefabricated assembled concrete structures, in particular to a design method of an ultra-high-strength steel sleeve for a prefabricated assembled concrete structure and a grouting connection device. Background technique [0002] The mechanical properties of the steel bar connection in the prefabricated concrete structure determine the overall performance of the prefabricated structure and the force transmission effect of the steel bar, and different sleeve connection methods will also affect the speed and cost of the prefabricated assembly. With the rapid development of prefabricated buildings in my country, semi-grouting sleeve connection is gradually becoming a main form of steel bar connection in precast concrete components, mainly used in prefabricated shear walls, prefabricated frame columns, prefabricated decorative panels and other component reinforcements connect. One end of the semi-grouting sle...

Claims

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Application Information

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IPC IPC(8): G06F30/13G06F30/20C04B28/00G06Q50/08G06F119/14
CPCG06F30/13G06F30/20C04B28/00G06Q50/08G06F2119/14C04B14/06C04B18/146C04B2103/302C04B2103/50C04B2103/0068
Inventor 孔正义刘全威曹现雷贾冬云
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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