Improved Prediction Model for Dynamic Resilient Modulus of Subgrade Silty Clay in Eastern Hunan and Its Relevant Finite Element Method Implementation

Dong Cheng; Zheng Guo-yong; Liu Wen-jie; Zhou Lun; Zhang Rui-lei

doi:doi:10.11648/j.ajce.20180601.18

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Improved Prediction Model for Dynamic Resilient Modulus of Subgrade Silty Clay in Eastern Hunan and Its Relevant Finite Element Method Implementation

Dong Cheng, Zheng Guo-yong, Liu Wen-jie, Zhou Lun, Zhang Rui-lei

Published in American Journal of Civil Engineering (Volume 6, Issue 1)

Received: 30 January 2018 Published: 3 February 2018

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Abstract

With the enhancement of transportation speed and axle load, dynamic response of subgrade increases significantly. In order to improve the calculation accuracy of subgrade response under complex stress state, it is necessary to use dynamic indicators instead of static indicators in calculative process. For the sake of investigating the influence factor of dynamic resilient modulus of subgrade silty clay in Eastern Hunan, resilient modulus tests were carried out by conducting repeated load tri-axial tests. Based on available model, an improved resilient modulus prediction model considering four parameters was proposed by introducing k4. Corresponding accurate consistent tangent stiffness matrix was derived. Afterward, the improved model was implemented into finite element method software and verification work was put forward both on single element and pavement-subgrade structure. Finally, calculated results were compared with in-site measured results. Study achievements demonstrate that the improved model exhibits a higher precision and efficiency on single element because k4 can better adjust the affecting proportion of octahedral shear stress. When applied to analysis on pavement-subgrade structure, the improved model can reflect subgrade resilient modulus distribution and evolution more factually. In addition, numerical calculated result nearly coincides with measured results, which shows the application value of the improved model.

Published in	American Journal of Civil Engineering (Volume 6, Issue 1)
DOI	10.11648/j.ajce.20180601.18
Page(s)	44-54
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), 2018. Published by Science Publishing Group

Keywords

Silty Clay, Dynamic Resilient Modulus, Prediction Model, Consistent Tangent Stiffness Matrix, Finite Element Method

References

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[16]	Ministry of Communications of China. Specifications for design of highway subgrades. China Communications Press, Beijing; 2015. (in Chinese).
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APA Style

Dong Cheng, Zheng Guo-yong, Liu Wen-jie, Zhou Lun, Zhang Rui-lei. (2018). Improved Prediction Model for Dynamic Resilient Modulus of Subgrade Silty Clay in Eastern Hunan and Its Relevant Finite Element Method Implementation. American Journal of Civil Engineering, 6(1), 44-54. https://doi.org/10.11648/j.ajce.20180601.18

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ACS Style

Dong Cheng; Zheng Guo-yong; Liu Wen-jie; Zhou Lun; Zhang Rui-lei. Improved Prediction Model for Dynamic Resilient Modulus of Subgrade Silty Clay in Eastern Hunan and Its Relevant Finite Element Method Implementation. Am. J. Civ. Eng. 2018, 6(1), 44-54. doi: 10.11648/j.ajce.20180601.18

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AMA Style

Dong Cheng, Zheng Guo-yong, Liu Wen-jie, Zhou Lun, Zhang Rui-lei. Improved Prediction Model for Dynamic Resilient Modulus of Subgrade Silty Clay in Eastern Hunan and Its Relevant Finite Element Method Implementation. Am J Civ Eng. 2018;6(1):44-54. doi: 10.11648/j.ajce.20180601.18

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@article{10.11648/j.ajce.20180601.18,
  author = {Dong Cheng and Zheng Guo-yong and Liu Wen-jie and Zhou Lun and Zhang Rui-lei},
  title = {Improved Prediction Model for Dynamic Resilient Modulus of Subgrade Silty Clay in Eastern Hunan and Its Relevant Finite Element Method Implementation},
  journal = {American Journal of Civil Engineering},
  volume = {6},
  number = {1},
  pages = {44-54},
  doi = {10.11648/j.ajce.20180601.18},
  url = {https://doi.org/10.11648/j.ajce.20180601.18},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajce.20180601.18},
  abstract = {With the enhancement of transportation speed and axle load, dynamic response of subgrade increases significantly. In order to improve the calculation accuracy of subgrade response under complex stress state, it is necessary to use dynamic indicators instead of static indicators in calculative process. For the sake of investigating the influence factor of dynamic resilient modulus of subgrade silty clay in Eastern Hunan, resilient modulus tests were carried out by conducting repeated load tri-axial tests. Based on available model, an improved resilient modulus prediction model considering four parameters was proposed by introducing k4. Corresponding accurate consistent tangent stiffness matrix was derived. Afterward, the improved model was implemented into finite element method software and verification work was put forward both on single element and pavement-subgrade structure. Finally, calculated results were compared with in-site measured results. Study achievements demonstrate that the improved model exhibits a higher precision and efficiency on single element because k4 can better adjust the affecting proportion of octahedral shear stress. When applied to analysis on pavement-subgrade structure, the improved model can reflect subgrade resilient modulus distribution and evolution more factually. In addition, numerical calculated result nearly coincides with measured results, which shows the application value of the improved model.},
 year = {2018}
}

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TY  - JOUR
T1  - Improved Prediction Model for Dynamic Resilient Modulus of Subgrade Silty Clay in Eastern Hunan and Its Relevant Finite Element Method Implementation
AU  - Dong Cheng
AU  - Zheng Guo-yong
AU  - Liu Wen-jie
AU  - Zhou Lun
AU  - Zhang Rui-lei
Y1  - 2018/02/03
PY  - 2018
N1  - https://doi.org/10.11648/j.ajce.20180601.18
DO  - 10.11648/j.ajce.20180601.18
T2  - American Journal of Civil Engineering
JF  - American Journal of Civil Engineering
JO  - American Journal of Civil Engineering
SP  - 44
EP  - 54
PB  - Science Publishing Group
SN  - 2330-8737
UR  - https://doi.org/10.11648/j.ajce.20180601.18
AB  - With the enhancement of transportation speed and axle load, dynamic response of subgrade increases significantly. In order to improve the calculation accuracy of subgrade response under complex stress state, it is necessary to use dynamic indicators instead of static indicators in calculative process. For the sake of investigating the influence factor of dynamic resilient modulus of subgrade silty clay in Eastern Hunan, resilient modulus tests were carried out by conducting repeated load tri-axial tests. Based on available model, an improved resilient modulus prediction model considering four parameters was proposed by introducing k4. Corresponding accurate consistent tangent stiffness matrix was derived. Afterward, the improved model was implemented into finite element method software and verification work was put forward both on single element and pavement-subgrade structure. Finally, calculated results were compared with in-site measured results. Study achievements demonstrate that the improved model exhibits a higher precision and efficiency on single element because k4 can better adjust the affecting proportion of octahedral shear stress. When applied to analysis on pavement-subgrade structure, the improved model can reflect subgrade resilient modulus distribution and evolution more factually. In addition, numerical calculated result nearly coincides with measured results, which shows the application value of the improved model.
VL  - 6
IS  - 1
ER  -

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Author Information

Dong Cheng

Hunan Communication Research Institute Limited Company, Changsha, China
Zheng Guo-yong

School of Civil Engineering, Central South University, Changsha, China
Liu Wen-jie

Hunan Communication Research Institute Limited Company, Changsha, China
Zhou Lun

Hunan Communication Research Institute Limited Company, Changsha, China
Zhang Rui-lei

Hunan Communication Research Institute Limited Company, Changsha, China

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Plain Text BibTeX RIS

APA Style

Dong Cheng, Zheng Guo-yong, Liu Wen-jie, Zhou Lun, Zhang Rui-lei. (2018). Improved Prediction Model for Dynamic Resilient Modulus of Subgrade Silty Clay in Eastern Hunan and Its Relevant Finite Element Method Implementation. American Journal of Civil Engineering, 6(1), 44-54. https://doi.org/10.11648/j.ajce.20180601.18

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ACS Style

Dong Cheng; Zheng Guo-yong; Liu Wen-jie; Zhou Lun; Zhang Rui-lei. Improved Prediction Model for Dynamic Resilient Modulus of Subgrade Silty Clay in Eastern Hunan and Its Relevant Finite Element Method Implementation. Am. J. Civ. Eng. 2018, 6(1), 44-54. doi: 10.11648/j.ajce.20180601.18

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AMA Style

Dong Cheng, Zheng Guo-yong, Liu Wen-jie, Zhou Lun, Zhang Rui-lei. Improved Prediction Model for Dynamic Resilient Modulus of Subgrade Silty Clay in Eastern Hunan and Its Relevant Finite Element Method Implementation. Am J Civ Eng. 2018;6(1):44-54. doi: 10.11648/j.ajce.20180601.18

Copy | Download

@article{10.11648/j.ajce.20180601.18,
  author = {Dong Cheng and Zheng Guo-yong and Liu Wen-jie and Zhou Lun and Zhang Rui-lei},
  title = {Improved Prediction Model for Dynamic Resilient Modulus of Subgrade Silty Clay in Eastern Hunan and Its Relevant Finite Element Method Implementation},
  journal = {American Journal of Civil Engineering},
  volume = {6},
  number = {1},
  pages = {44-54},
  doi = {10.11648/j.ajce.20180601.18},
  url = {https://doi.org/10.11648/j.ajce.20180601.18},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajce.20180601.18},
  abstract = {With the enhancement of transportation speed and axle load, dynamic response of subgrade increases significantly. In order to improve the calculation accuracy of subgrade response under complex stress state, it is necessary to use dynamic indicators instead of static indicators in calculative process. For the sake of investigating the influence factor of dynamic resilient modulus of subgrade silty clay in Eastern Hunan, resilient modulus tests were carried out by conducting repeated load tri-axial tests. Based on available model, an improved resilient modulus prediction model considering four parameters was proposed by introducing k4. Corresponding accurate consistent tangent stiffness matrix was derived. Afterward, the improved model was implemented into finite element method software and verification work was put forward both on single element and pavement-subgrade structure. Finally, calculated results were compared with in-site measured results. Study achievements demonstrate that the improved model exhibits a higher precision and efficiency on single element because k4 can better adjust the affecting proportion of octahedral shear stress. When applied to analysis on pavement-subgrade structure, the improved model can reflect subgrade resilient modulus distribution and evolution more factually. In addition, numerical calculated result nearly coincides with measured results, which shows the application value of the improved model.},
 year = {2018}
}

Copy | Download

TY  - JOUR
T1  - Improved Prediction Model for Dynamic Resilient Modulus of Subgrade Silty Clay in Eastern Hunan and Its Relevant Finite Element Method Implementation
AU  - Dong Cheng
AU  - Zheng Guo-yong
AU  - Liu Wen-jie
AU  - Zhou Lun
AU  - Zhang Rui-lei
Y1  - 2018/02/03
PY  - 2018
N1  - https://doi.org/10.11648/j.ajce.20180601.18
DO  - 10.11648/j.ajce.20180601.18
T2  - American Journal of Civil Engineering
JF  - American Journal of Civil Engineering
JO  - American Journal of Civil Engineering
SP  - 44
EP  - 54
PB  - Science Publishing Group
SN  - 2330-8737
UR  - https://doi.org/10.11648/j.ajce.20180601.18
AB  - With the enhancement of transportation speed and axle load, dynamic response of subgrade increases significantly. In order to improve the calculation accuracy of subgrade response under complex stress state, it is necessary to use dynamic indicators instead of static indicators in calculative process. For the sake of investigating the influence factor of dynamic resilient modulus of subgrade silty clay in Eastern Hunan, resilient modulus tests were carried out by conducting repeated load tri-axial tests. Based on available model, an improved resilient modulus prediction model considering four parameters was proposed by introducing k4. Corresponding accurate consistent tangent stiffness matrix was derived. Afterward, the improved model was implemented into finite element method software and verification work was put forward both on single element and pavement-subgrade structure. Finally, calculated results were compared with in-site measured results. Study achievements demonstrate that the improved model exhibits a higher precision and efficiency on single element because k4 can better adjust the affecting proportion of octahedral shear stress. When applied to analysis on pavement-subgrade structure, the improved model can reflect subgrade resilient modulus distribution and evolution more factually. In addition, numerical calculated result nearly coincides with measured results, which shows the application value of the improved model.
VL  - 6
IS  - 1
ER  -

Copy | Download