Construction method of uniaxial stress-strain constitutive model of grouting material special for sleeve

A constitutive model and uniaxial stress technology, applied in the fields of engineering and architecture, can solve problems such as inconsistency, inconsistency in concrete material properties, and no further research, and achieve the effect of avoiding errors and accurate elastic modulus
CN112580192AActive Publication Date: 2021-03-30FUJIAN UNIV OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FUJIAN UNIV OF TECH
Publication Date
2021-03-30

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Abstract

The invention provides a construction method of a uniaxial stress-strain constitutive model of a special grouting material for a sleeve. The construction method comprises the following steps: S1, obtaining a relational expression of peak strain and compressive strength of the grouting material according to a compression test and a splitting tensile test; S2, determining a relational expression between the compressive elasticity modulus and the strength of the special grouting material for the sleeve according to a static compressive elasticity modulus test method; S3, determining a uniaxial compressive stress-strain constitutive model of the special grouting material for the sleeve according to the compressive test; S4, determining a uniaxial tensile stress-strain constitutive model of thespecial grouting material for the sleeve according to data obtained by the splitting tensile test. The constitutive relation curve of the grouting material special for the sleeve can be effectively,accurately and quantitatively constructed, and the method can be used for constructing a constitutive model of the grouting material special for the sleeve in a fabricated building.
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Description

technical field

[0001] The invention relates to the fields of architecture and engineering, in particular to a method for constructing a uniaxial stress-strain constitutive model based on special grouting materials for sleeves. Background technique

[0002] Explanation of terms:

[0003] Peak stress: The maximum stress required for the specimen to fail.

[0004] Peak strain: The peak strain is the strain corresponding to the peak stress.

[0005] Modulus of Elasticity: Stress in a unidirectional stress state divided by the strain in that direction.

[0006] The stress-strain relationship of special grouting materials for sleeves reflects the basic mechanical properties of grouting materials, and is also the basis for experimental research and numerical simulation of steel sleeve connection. However, the constitutive relation of special grouting materials for sleeves has not yet matured so far, and there is no suitable existing model for direct use in research or engineeri...

Claims

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