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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

Active Publication Date: 2021-03-30
FUJIAN UNIV OF TECH +1
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Problems solved by technology

[0009] ① When the concrete constitutive model is used to replace the constitutive model of the special grouting material for the sleeve, this method is only for the compression constitutive model of the special grouting material, and there is no further research on its tensile constitutive model, and the sleeve The special grouting material is essentially a cement-based mortar material without coarse aggregate, which does not match the material properties of concrete, resulting in a discrepancy between the results of the finite element simulation and the actual situation

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

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Embodiment Construction

[0043] In order to make the features and advantages of this patent more obvious and easy to understand, the following specific examples are given together with the accompanying drawings and described in detail as follows:

[0044] 1 grouting material raw material

[0045] The raw material of the grouting material in this embodiment is the special high-strength grouting material for sleeves produced by Beijing Sida Jianmao Technology Development Co., Ltd., and it is prepared according to the water consumption required by the product specification. Its basic properties are shown in Table 1.

[0046] Table 1 Grout material properties

[0047]

[0048] 2 Experimental design

[0049] The test design of this embodiment uses 24 cube test blocks with a size of 70.7mm×70.7mm×70.7mm, 6 cube test blocks with a size of 100mm×100mm×100mm and 6 prisms with a size of 100mm×100mm×300mm test block. The specific information is shown in Table 2. The specimens were demoulded 1 day after f...

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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.

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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06Q50/08G06F119/14G06F111/10
CPCG06F30/20G06Q50/08G06F2119/14G06F2111/10
Inventor 吴琛麻胜兰李道松黄成峰丁冬林钟诚张杰林国良杨超郑志煌项洪肖晓菲范思炜
Owner FUJIAN UNIV OF TECH
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