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A method and device for testing and analyzing the dynamic shear modulus of marine soil

A shear modulus, test and analysis technology, applied in the field of marine geotechnical engineering, can solve the problems of reducing the accuracy of analysis and calculation, the error of dynamic shear modulus test, and affecting the properties of soil samples, so as to improve the efficiency of test analysis and reduce the The effect of test error

Active Publication Date: 2022-06-03
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the sampling, transportation, storage and test process will cause disturbance of the soil sample, so that the obtained dynamic shear modulus is different from the actual one. The disturbance of the soil sample will affect the properties of the soil sample, resulting in the error of the dynamic shear modulus. Thereby reducing the accuracy of subsequent analysis and calculation

Method used

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  • A method and device for testing and analyzing the dynamic shear modulus of marine soil
  • A method and device for testing and analyzing the dynamic shear modulus of marine soil
  • A method and device for testing and analyzing the dynamic shear modulus of marine soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] In the specific implementation process, step S101 belongs to the "testing process", which specifically includes steps S10 to S20.

[0072]

[0078]

[0081]

[0082]

[0085]

[0086] Wherein: G1 is the dynamic shear modulus constant.

Embodiment 2

[0100] Control the cross plate shearing instrument to be inserted into the undisturbed soil sample of the marine soil, and control the cross plate shearing instrument to

[0102] According to the constant angular velocity ω shearing the undisturbed soil sample, the angular velocity ω is controlled below 0.1rad / s, shearing

[0105]

[0109]

[0112]

[0115]

[0120] an angular displacement sensor for measuring the rotation angle θ;

[0121] A transmission mechanism for precisely controlling the angular velocity ω.

[0123] If the plate head of the cross plate of the cross plate shearing instrument does not have a cone tip, the value of K is 12.57;

Embodiment 3

[0130] Based on the same inventive concept, as shown in FIG. 6, this embodiment provides a computer-readable storage medium 400, which

[0133] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer programs

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Abstract

The invention discloses a method for testing and analyzing the dynamic shear modulus of marine soil, which includes: using a cross-plate shearer to sample marine soil on site, and recording in real time the measured torque T of the cross-plate shearer for each sampling and rotation angle θ; based on the measured torque T and rotation angle θ of the cross-plate shearer, the dynamic shear modulus of the marine soil is obtained. The invention can complete the test and analysis of the dynamic shear modulus of marine soil, reduce the test error caused by the disturbance of the sample, and further improve the accuracy of the dynamic shear modulus. At the same time, the invention also discloses a test and analysis device for dynamic shear modulus of marine soil and a computer-readable storage medium.

Description

A method and device for testing and analyzing marine soil dynamic shear modulus technical field The present invention relates to marine geotechnical engineering field, relate in particular to a kind of marine soil dynamic shear modulus test analysis method and device. Background technique [0002] Dynamic shear modulus is often used as a dynamic parameter to evaluate the dynamic properties of soft soils. The traditional dynamic shear modulus test method is After sampling through ocean drilling, the geotechnical tests such as dynamic triaxial and resonance column are used to test it. Because the test of traditional shear modulus is obtained by performing dynamic triaxial, resonance column test in laboratory after sampling of. Because the sampling, transportation, storage and testing process will cause disturbance of the soil sample, the obtained dynamic shear modulus and There are differences in practice. The disturbance of the soil sample will affect the properties...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/24
CPCG01N3/24G01N2203/0003G01N2203/0025G01N2203/0202G01N2203/0682G01N2203/0676
Inventor 祁磊邓海峰许浩李春曹先凡赵开龙徐爽姚志广
Owner BC P INC CHINA NAT PETROLEUM CORP
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