Coupling Numerical Analysis Method for Primary and Secondary Consolidation of Soft Soil Foundation

Zhang Kui; Yao Yangping

doi:doi:10.11648/j.sd.20231101.13

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Coupling Numerical Analysis Method for Primary and Secondary Consolidation of Soft Soil Foundation

Zhang Kui, Yao Yangping

Published in Science Discovery (Volume 11, Issue 1)

Received: 29 January 2023 Accepted: 20 February 2023 Published: 24 February 2023

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Abstract

Soft clay is widely distributed in our country, and this type of soil usually has the character of large compressibility and poor permeability, so the foundation composed mainly of soft clay is prone to primary and secondary consolidation coupling settlement deformation after the completion of construction. In this paper, secondary consolidation deformation is redefined in the improved time logarithmic coordinate system, and the calculation formula of secondary consolidation deformation is given. Then an extended unified hardening model is introduced, and by applying this model, the effect of time can be transformed to the increment of equivalent stress. The numerical governing equations are established in combination with the seepage consolidation theory. Thus the coupling analysis of primary and secondary consolidation of soft clay foundation can be realized. By means of a finite element case analysis and verification of subgrade construction and post-construction deformation, it is found that the effective calculation of primary and secondary consolidation deformation can be accomplished smoothly based on the extended unified hardening model, and meanwhile the permeability coefficient and secondary consolidation parameters are able to effectively control the primary consolidation deformation and secondary consolidation deformation of soft clay foundation. The research is valuable to develope the prediction method of soft clay foundation deformation and improve the prediction accuracy of soft clay foundation deformation in engineering, and it is of great significance to solve complex geotechnical engineering problems.

Published in	Science Discovery (Volume 11, Issue 1)
DOI	10.11648/j.sd.20231101.13
Page(s)	18-23
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2023. Published by Science Publishing Group

Keywords

Soft Clay Foundation, Numerical Calculation, E-UH Constitutive Model, Primary Consolidation, Secondary Consolidation

References

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Zhang Kui, Yao Yangping. (2023). Coupling Numerical Analysis Method for Primary and Secondary Consolidation of Soft Soil Foundation. Science Discovery, 11(1), 18-23. https://doi.org/10.11648/j.sd.20231101.13

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ACS Style

Zhang Kui; Yao Yangping. Coupling Numerical Analysis Method for Primary and Secondary Consolidation of Soft Soil Foundation. Sci. Discov. 2023, 11(1), 18-23. doi: 10.11648/j.sd.20231101.13

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AMA Style

Zhang Kui, Yao Yangping. Coupling Numerical Analysis Method for Primary and Secondary Consolidation of Soft Soil Foundation. Sci Discov. 2023;11(1):18-23. doi: 10.11648/j.sd.20231101.13

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@article{10.11648/j.sd.20231101.13,
  author = {Zhang Kui and Yao Yangping},
  title = {Coupling Numerical Analysis Method for Primary and Secondary Consolidation of Soft Soil Foundation},
  journal = {Science Discovery},
  volume = {11},
  number = {1},
  pages = {18-23},
  doi = {10.11648/j.sd.20231101.13},
  url = {https://doi.org/10.11648/j.sd.20231101.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20231101.13},
  abstract = {Soft clay is widely distributed in our country, and this type of soil usually has the character of large compressibility and poor permeability, so the foundation composed mainly of soft clay is prone to primary and secondary consolidation coupling settlement deformation after the completion of construction. In this paper, secondary consolidation deformation is redefined in the improved time logarithmic coordinate system, and the calculation formula of secondary consolidation deformation is given. Then an extended unified hardening model is introduced, and by applying this model, the effect of time can be transformed to the increment of equivalent stress. The numerical governing equations are established in combination with the seepage consolidation theory. Thus the coupling analysis of primary and secondary consolidation of soft clay foundation can be realized. By means of a finite element case analysis and verification of subgrade construction and post-construction deformation, it is found that the effective calculation of primary and secondary consolidation deformation can be accomplished smoothly based on the extended unified hardening model, and meanwhile the permeability coefficient and secondary consolidation parameters are able to effectively control the primary consolidation deformation and secondary consolidation deformation of soft clay foundation. The research is valuable to develope the prediction method of soft clay foundation deformation and improve the prediction accuracy of soft clay foundation deformation in engineering, and it is of great significance to solve complex geotechnical engineering problems.},
 year = {2023}
}

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TY  - JOUR
T1  - Coupling Numerical Analysis Method for Primary and Secondary Consolidation of Soft Soil Foundation
AU  - Zhang Kui
AU  - Yao Yangping
Y1  - 2023/02/24
PY  - 2023
N1  - https://doi.org/10.11648/j.sd.20231101.13
DO  - 10.11648/j.sd.20231101.13
T2  - Science Discovery
JF  - Science Discovery
JO  - Science Discovery
SP  - 18
EP  - 23
PB  - Science Publishing Group
SN  - 2331-0650
UR  - https://doi.org/10.11648/j.sd.20231101.13
AB  - Soft clay is widely distributed in our country, and this type of soil usually has the character of large compressibility and poor permeability, so the foundation composed mainly of soft clay is prone to primary and secondary consolidation coupling settlement deformation after the completion of construction. In this paper, secondary consolidation deformation is redefined in the improved time logarithmic coordinate system, and the calculation formula of secondary consolidation deformation is given. Then an extended unified hardening model is introduced, and by applying this model, the effect of time can be transformed to the increment of equivalent stress. The numerical governing equations are established in combination with the seepage consolidation theory. Thus the coupling analysis of primary and secondary consolidation of soft clay foundation can be realized. By means of a finite element case analysis and verification of subgrade construction and post-construction deformation, it is found that the effective calculation of primary and secondary consolidation deformation can be accomplished smoothly based on the extended unified hardening model, and meanwhile the permeability coefficient and secondary consolidation parameters are able to effectively control the primary consolidation deformation and secondary consolidation deformation of soft clay foundation. The research is valuable to develope the prediction method of soft clay foundation deformation and improve the prediction accuracy of soft clay foundation deformation in engineering, and it is of great significance to solve complex geotechnical engineering problems.
VL  - 11
IS  - 1
ER  -

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Author Information

Zhang Kui

School of Transportation Science and Engineering, Beihang University, Beijing, China
Yao Yangping

School of Transportation Science and Engineering, Beihang University, Beijing, China

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Zhang Kui, Yao Yangping. (2023). Coupling Numerical Analysis Method for Primary and Secondary Consolidation of Soft Soil Foundation. Science Discovery, 11(1), 18-23. https://doi.org/10.11648/j.sd.20231101.13

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ACS Style

Zhang Kui; Yao Yangping. Coupling Numerical Analysis Method for Primary and Secondary Consolidation of Soft Soil Foundation. Sci. Discov. 2023, 11(1), 18-23. doi: 10.11648/j.sd.20231101.13

Copy | Download

AMA Style

Zhang Kui, Yao Yangping. Coupling Numerical Analysis Method for Primary and Secondary Consolidation of Soft Soil Foundation. Sci Discov. 2023;11(1):18-23. doi: 10.11648/j.sd.20231101.13

Copy | Download

@article{10.11648/j.sd.20231101.13,
  author = {Zhang Kui and Yao Yangping},
  title = {Coupling Numerical Analysis Method for Primary and Secondary Consolidation of Soft Soil Foundation},
  journal = {Science Discovery},
  volume = {11},
  number = {1},
  pages = {18-23},
  doi = {10.11648/j.sd.20231101.13},
  url = {https://doi.org/10.11648/j.sd.20231101.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.sd.20231101.13},
  abstract = {Soft clay is widely distributed in our country, and this type of soil usually has the character of large compressibility and poor permeability, so the foundation composed mainly of soft clay is prone to primary and secondary consolidation coupling settlement deformation after the completion of construction. In this paper, secondary consolidation deformation is redefined in the improved time logarithmic coordinate system, and the calculation formula of secondary consolidation deformation is given. Then an extended unified hardening model is introduced, and by applying this model, the effect of time can be transformed to the increment of equivalent stress. The numerical governing equations are established in combination with the seepage consolidation theory. Thus the coupling analysis of primary and secondary consolidation of soft clay foundation can be realized. By means of a finite element case analysis and verification of subgrade construction and post-construction deformation, it is found that the effective calculation of primary and secondary consolidation deformation can be accomplished smoothly based on the extended unified hardening model, and meanwhile the permeability coefficient and secondary consolidation parameters are able to effectively control the primary consolidation deformation and secondary consolidation deformation of soft clay foundation. The research is valuable to develope the prediction method of soft clay foundation deformation and improve the prediction accuracy of soft clay foundation deformation in engineering, and it is of great significance to solve complex geotechnical engineering problems.},
 year = {2023}
}

Copy | Download

TY  - JOUR
T1  - Coupling Numerical Analysis Method for Primary and Secondary Consolidation of Soft Soil Foundation
AU  - Zhang Kui
AU  - Yao Yangping
Y1  - 2023/02/24
PY  - 2023
N1  - https://doi.org/10.11648/j.sd.20231101.13
DO  - 10.11648/j.sd.20231101.13
T2  - Science Discovery
JF  - Science Discovery
JO  - Science Discovery
SP  - 18
EP  - 23
PB  - Science Publishing Group
SN  - 2331-0650
UR  - https://doi.org/10.11648/j.sd.20231101.13
AB  - Soft clay is widely distributed in our country, and this type of soil usually has the character of large compressibility and poor permeability, so the foundation composed mainly of soft clay is prone to primary and secondary consolidation coupling settlement deformation after the completion of construction. In this paper, secondary consolidation deformation is redefined in the improved time logarithmic coordinate system, and the calculation formula of secondary consolidation deformation is given. Then an extended unified hardening model is introduced, and by applying this model, the effect of time can be transformed to the increment of equivalent stress. The numerical governing equations are established in combination with the seepage consolidation theory. Thus the coupling analysis of primary and secondary consolidation of soft clay foundation can be realized. By means of a finite element case analysis and verification of subgrade construction and post-construction deformation, it is found that the effective calculation of primary and secondary consolidation deformation can be accomplished smoothly based on the extended unified hardening model, and meanwhile the permeability coefficient and secondary consolidation parameters are able to effectively control the primary consolidation deformation and secondary consolidation deformation of soft clay foundation. The research is valuable to develope the prediction method of soft clay foundation deformation and improve the prediction accuracy of soft clay foundation deformation in engineering, and it is of great significance to solve complex geotechnical engineering problems.
VL  - 11
IS  - 1
ER  -

Copy | Download