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Sleeve joint tension capacity evaluation method taking grouting compactness into consideration

A technology of sleeve joints and bearing capacity, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of huge influence on the overall mechanical properties, and achieve the effect of preventing catastrophic consequences

Active Publication Date: 2017-06-13
FUZHOU UNIV
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

The density of grouting has a great influence on the overall mechanical properties of sleeve joints and prefabricated buildings, but there is no report on the evaluation method of tensile bearing capacity of sleeve joints based on grout density.

Method used

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  • Sleeve joint tension capacity evaluation method taking grouting compactness into consideration
  • Sleeve joint tension capacity evaluation method taking grouting compactness into consideration
  • Sleeve joint tension capacity evaluation method taking grouting compactness into consideration

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0047] This embodiment provides a method for evaluating the tensile bearing capacity of sleeve joints considering the grouting compactness, which is a grouting sleeve of an actual fabricated structure ( A method for evaluating and calculating the tensile capacity of steel bars).

[0048] First, the key parameters A and B are given according to the test, and then the actual steel-grouting bond force P is calculated through the proposed steel-grouting material bond force slip model b , and calculate the tensile bearing capacity T of the joint steel bar according to the tensile bearing capacity calculation formula b , and finally by comparing the reinforcement-grouting material bonding force P b and the tensile capacity T of the joint reinforcement b Give the tensile bearing capacity P of the sleeve joint u .

[0049] Specifically, wherein, the tensil...

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Abstract

The invention relates to a sleeve joint tension capacity evaluation method taking grouting compactness into consideration. The sleeve joint tension capacity evaluation method taking the grouting compactness into consideration includes providing values of key parameters A and B according to a test, computing actual steel bar-grouting material bonding force according to a steel bar-grouting material bonding force slip model, computing tension capacity of jointed steel bars according to a jointed steel bar tension capacity computational formula, and providing sleeve joint tension capacity by comparing the steel bar-grouting material bonding force with the jointed steel bar tension capacity. The sleeve joint tension capacity evaluation method taking the grouting compactness into consideration is capable of evaluating the sleeve joint tension capacity through sleeve and steel bar design parameters.

Description

technical field [0001] The invention relates to the field of calculating the tensile bearing capacity of sleeve joints, in particular to a method for evaluating the tensile bearing capacity of sleeve joints considering the compactness of grouting. Background technique [0002] In recent years, with the development of structural industrialization, prefabricated buildings have become one of the main structural forms that are vigorously promoted and developed by current architectural industrialization. However, compared with cast-in-place buildings, the integrity and connection quality of prefabricated buildings are still hot issues of concern, and the wet connection in the existing connection methods mainly uses grouting sleeve joints. Grouted sleeve joints use non-shrink grout as the bonding material to connect the reinforcement to ensure continuity of load transfer. The sleeve is usually manufactured by casting process or machining process. The grouting material is cement a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F2119/06
Inventor 姜绍飞蔡婉霞
Owner FUZHOU UNIV
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