Fatigue & Fracture of Engineering Materials & Structures

Volume 46, Issue 10 pp. 3680-3698

ORIGINAL ARTICLE

A creep constitutive model for heterogeneous frozen clay soil considering the damage of cryostructure

Sheng Shi,

Corresponding Author

Sheng Shi

[email protected]

College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, PR China

Center for Balance Architecture, Zhejiang University, Hangzhou, PR China

Architectural Design and Research Institute, Zhejiang University, Hangzhou, PR China

Correspondence

Feng Zhang, School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, PR China.

Email: [email protected]

Sheng Shi, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, Zhejiang, PR China.

Email: [email protected]

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Feng Zhang,

Corresponding Author

Feng Zhang

[email protected]

School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, PR China

Correspondence

Feng Zhang, School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, PR China.

Email: [email protected]

Sheng Shi, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, Zhejiang, PR China.

Email: [email protected]

Search for more papers by this author

Decheng Feng,

Decheng Feng

School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, PR China

Search for more papers by this author

Sheng Shi,

Corresponding Author

Sheng Shi

[email protected]

College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, PR China

Center for Balance Architecture, Zhejiang University, Hangzhou, PR China

Architectural Design and Research Institute, Zhejiang University, Hangzhou, PR China

Correspondence

Feng Zhang, School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, PR China.

Email: [email protected]

Sheng Shi, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, Zhejiang, PR China.

Email: [email protected]

Search for more papers by this author

Feng Zhang,

Corresponding Author

Feng Zhang

[email protected]

School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, PR China

Correspondence

Feng Zhang, School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, PR China.

Email: [email protected]

Sheng Shi, College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, Zhejiang, PR China.

Email: [email protected]

Search for more papers by this author

Decheng Feng,

Decheng Feng

School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, PR China

Search for more papers by this author

First published: 08 July 2023

https://doi.org/10.1111/ffe.14097

Citations: 1

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Abstract

In cold regions, the creep behavior of frozen soil is a crucial indicator for evaluating the stability of engineering foundations. The creep properties of frozen soil are more complex than unfrozen soil owing to its special cryogenic structures. In this research, a series of creep tests were conducted on the heterogeneous frozen clay soil under different deviatoric stresses, and the influence of deviatoric stress and structural features on its creep behaviors were analyzed. Based on the test results and fracture mechanics, the damage variable of heterogeneous frozen clay soil considering the effect of cryostructure was defined, and the sensitivity of parameters in damage variable were analyzed. By introducing the hardening variable and damage variable into the classical Nishihara model, a new creep constitutive model for heterogeneous frozen clay soil considering the fracture of cryostructure was established, the validity of the model was verified using test results, and the model parameters were analyzed.

Highlights

Creep tests were conducted on different structural types of frozen clay soil under different deviatoric stresses.
The damage variable considering propagation of cracks during creep process was defined.
A creep constitutive model for frozen clay soil based on the hardening and damage effects was proposed.
The rationality of the model was verified, and the sensitive of model parameters were analyzed.

CONFLICT OF INTEREST STATEMENT

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Open Research

DATA AVAILABILITY STATEMENT

All data included in this study are available upon request by contact with the corresponding author.

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Volume46, Issue10

October 2023

Pages 3680-3698

A creep constitutive model for heterogeneous frozen clay soil considering the damage of cryostructure

Abstract

Highlights

CONFLICT OF INTEREST STATEMENT

Open Research

DATA AVAILABILITY STATEMENT

REFERENCES

Citing Literature

References

Information

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A creep constitutive model for heterogeneous frozen clay soil considering the damage of cryostructure

Abstract

Highlights

CONFLICT OF INTEREST STATEMENT

Open Research

DATA AVAILABILITY STATEMENT

REFERENCES

Citing Literature

References

Related

Information