Study on Gradation Improvement of Gravel and Sand for Surface Layer of Railway Subgrade by Blending Method

Yang Jingwei

doi:doi:10.11648/j.ajtte.20190401.11

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Study on Gradation Improvement of Gravel and Sand for Surface Layer of Railway Subgrade by Blending Method

Yang Jingwei

Published in American Journal of Traffic and Transportation Engineering (Volume 4, Issue 1)

Received: 26 September 2018 Accepted: 22 December 2018 Published: 25 March 2019

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Abstract

As the direct foundation of the track, the surface layer of high-speed railway subgrade bed is one of the important parts of the subgrade. Its main function is to transmit and spread the vertical load of the upper ballast bed and the vehicle dynamic load to maintain the long-term stability of the subgrade bed surface. So, the material for the surface layer of subgrade bed should have high strength, elastic modulus, wear resistance and invented filtration. The graded sand gravel, which is used as the filler for the surface layer of railway subgrade bed, has such features as high mechanical strength, high water stability, easy obtaining, convenient construction, low cost and so forth. The purpose of this study is to physically blend local sand gravel materials to solve the defect of excessive fine particle content, so that it can meet the grading requirements of the specification and design standards and also to provide a general calculation method and solution for the mix ratio design of natural sand gravel. In combination with a foreign project, the dissertation expatiated on the calculation method for improving the gradation defects of natural sand gravel by the blending method. Then, according to local conditions, the author successfully solved the gradation defects of natural sand gravel mixture with the said method and achieved good economic and social benefits.

Published in	American Journal of Traffic and Transportation Engineering (Volume 4, Issue 1)
DOI	10.11648/j.ajtte.20190401.11
Page(s)	1-6
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), 2019. Published by Science Publishing Group

Keywords

Railway Subgrade, Surface Layer of Subgrade Bed, Gravel and Sand, Gradation Improvement, Excel Solver Macro, Calculation Method

References

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[2]	Code for Soil Test of Railway Engineering [S]. TB10102-2004, China Railway Publishing House, 2004. Beijing.
[3]	Wu Lianhai, Song Yongjun. Compaction Testing and Time Effect of the Cement-mixed Soil Subgrade Bed for Passenger Railway Line [J]. Railway Investigation and Surveying, 2005, (1): 33-35.
[4]	Yang Huiguang, Optimized Calculation of Bitumen Mix Design by Excel [J]. Journal of Highway and Transportation Research and Development, 2000, 17 (5): 13-14.
[5]	Wang Qi, Study on Determination of Liquid and Plastic Limits of Fine-Grained Soil By Joint Determination Method [D]. Master's Thesis of Dalian University of Technology, June 2008.
[6]	Wu Youming, Study on Filled Soil Classification and Compaction Standard of Railway Subgrade [D]. Master's Thesis of Southwest Jiao-Tong University of Technology, Dec 2004.
[7]	Qian Lixing, The Word High-Speed Railway Technology [M]. Beijing: China Railway Publishing House.
[8]	Yang Guangqing, The Construction and Design of High-Speed Railway Embankment [M]. Beijing: China Railway Publishing House.
[9]	Zhang Zhengang, The Subgrade Bed Research of the High-Speed Railway [J]. China Safety Science Journal, Volume 06, 2002
[10]	Yan Shengen, The Subgrade Bed Design of The High-Speed Railway [J]. The Subgrade Construction, Volume 3, 1997.
[11]	Mei Yingjun, The Nonlinear Analysis of Aggregate [J]. Journal of Chong-Qin Jiao-Tong University, Volume 3, 2004.
[12]	Chai Hejun, Overview of Soil-Stone High Embankment Construction Study [J]; Rock and Soil Mechanics, Jun 2004.
[13]	Chai He-Jun, Research on Grain Size Features an Fractal Dimensions of Soil-Stone Mixed Materials [J]. Technology of Highway and Transport, Dec 2009.
[14]	Kong Xiangchen, Experiment and Research on Vibrating Compaction Properties of Soil-Aggregate Mixture [J]. Chinese Journal of Undergrad Space and Engineering.
[15]	Liang Xiangqian. Experimental Study on Vibrating Compaction Performance of Gravel Soil [J]. Chinese Journal of Rock Mechanics and Engineering, Aug. 2005.
[16]	Tang Shuguang, Study on How to Use the Least Square Method in the Analysis of Experimental Data [J], Dec. 2003.

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APA Style

Yang Jingwei. (2019). Study on Gradation Improvement of Gravel and Sand for Surface Layer of Railway Subgrade by Blending Method. American Journal of Traffic and Transportation Engineering, 4(1), 1-6. https://doi.org/10.11648/j.ajtte.20190401.11

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ACS Style

Yang Jingwei. Study on Gradation Improvement of Gravel and Sand for Surface Layer of Railway Subgrade by Blending Method. Am. J. Traffic Transp. Eng. 2019, 4(1), 1-6. doi: 10.11648/j.ajtte.20190401.11

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AMA Style

Yang Jingwei. Study on Gradation Improvement of Gravel and Sand for Surface Layer of Railway Subgrade by Blending Method. Am J Traffic Transp Eng. 2019;4(1):1-6. doi: 10.11648/j.ajtte.20190401.11

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@article{10.11648/j.ajtte.20190401.11,
  author = {Yang Jingwei},
  title = {Study on Gradation Improvement of Gravel and Sand for Surface Layer of Railway Subgrade by Blending Method},
  journal = {American Journal of Traffic and Transportation Engineering},
  volume = {4},
  number = {1},
  pages = {1-6},
  doi = {10.11648/j.ajtte.20190401.11},
  url = {https://doi.org/10.11648/j.ajtte.20190401.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajtte.20190401.11},
  abstract = {As the direct foundation of the track, the surface layer of high-speed railway subgrade bed is one of the important parts of the subgrade. Its main function is to transmit and spread the vertical load of the upper ballast bed and the vehicle dynamic load to maintain the long-term stability of the subgrade bed surface. So, the material for the surface layer of subgrade bed should have high strength, elastic modulus, wear resistance and invented filtration. The graded sand gravel, which is used as the filler for the surface layer of railway subgrade bed, has such features as high mechanical strength, high water stability, easy obtaining, convenient construction, low cost and so forth. The purpose of this study is to physically blend local sand gravel materials to solve the defect of excessive fine particle content, so that it can meet the grading requirements of the specification and design standards and also to provide a general calculation method and solution for the mix ratio design of natural sand gravel. In combination with a foreign project, the dissertation expatiated on the calculation method for improving the gradation defects of natural sand gravel by the blending method. Then, according to local conditions, the author successfully solved the gradation defects of natural sand gravel mixture with the said method and achieved good economic and social benefits.},
 year = {2019}
}

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TY  - JOUR
T1  - Study on Gradation Improvement of Gravel and Sand for Surface Layer of Railway Subgrade by Blending Method
AU  - Yang Jingwei
Y1  - 2019/03/25
PY  - 2019
N1  - https://doi.org/10.11648/j.ajtte.20190401.11
DO  - 10.11648/j.ajtte.20190401.11
T2  - American Journal of Traffic and Transportation Engineering
JF  - American Journal of Traffic and Transportation Engineering
JO  - American Journal of Traffic and Transportation Engineering
SP  - 1
EP  - 6
PB  - Science Publishing Group
SN  - 2578-8604
UR  - https://doi.org/10.11648/j.ajtte.20190401.11
AB  - As the direct foundation of the track, the surface layer of high-speed railway subgrade bed is one of the important parts of the subgrade. Its main function is to transmit and spread the vertical load of the upper ballast bed and the vehicle dynamic load to maintain the long-term stability of the subgrade bed surface. So, the material for the surface layer of subgrade bed should have high strength, elastic modulus, wear resistance and invented filtration. The graded sand gravel, which is used as the filler for the surface layer of railway subgrade bed, has such features as high mechanical strength, high water stability, easy obtaining, convenient construction, low cost and so forth. The purpose of this study is to physically blend local sand gravel materials to solve the defect of excessive fine particle content, so that it can meet the grading requirements of the specification and design standards and also to provide a general calculation method and solution for the mix ratio design of natural sand gravel. In combination with a foreign project, the dissertation expatiated on the calculation method for improving the gradation defects of natural sand gravel by the blending method. Then, according to local conditions, the author successfully solved the gradation defects of natural sand gravel mixture with the said method and achieved good economic and social benefits.
VL  - 4
IS  - 1
ER  -

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Author Information

Yang Jingwei

China Railway No. 2 Engineering Group Corporation Ltd., Chengdu, China

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Plain Text BibTeX RIS

APA Style

Yang Jingwei. (2019). Study on Gradation Improvement of Gravel and Sand for Surface Layer of Railway Subgrade by Blending Method. American Journal of Traffic and Transportation Engineering, 4(1), 1-6. https://doi.org/10.11648/j.ajtte.20190401.11

Copy | Download

ACS Style

Yang Jingwei. Study on Gradation Improvement of Gravel and Sand for Surface Layer of Railway Subgrade by Blending Method. Am. J. Traffic Transp. Eng. 2019, 4(1), 1-6. doi: 10.11648/j.ajtte.20190401.11

Copy | Download

AMA Style

Yang Jingwei. Study on Gradation Improvement of Gravel and Sand for Surface Layer of Railway Subgrade by Blending Method. Am J Traffic Transp Eng. 2019;4(1):1-6. doi: 10.11648/j.ajtte.20190401.11

Copy | Download

@article{10.11648/j.ajtte.20190401.11,
  author = {Yang Jingwei},
  title = {Study on Gradation Improvement of Gravel and Sand for Surface Layer of Railway Subgrade by Blending Method},
  journal = {American Journal of Traffic and Transportation Engineering},
  volume = {4},
  number = {1},
  pages = {1-6},
  doi = {10.11648/j.ajtte.20190401.11},
  url = {https://doi.org/10.11648/j.ajtte.20190401.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajtte.20190401.11},
  abstract = {As the direct foundation of the track, the surface layer of high-speed railway subgrade bed is one of the important parts of the subgrade. Its main function is to transmit and spread the vertical load of the upper ballast bed and the vehicle dynamic load to maintain the long-term stability of the subgrade bed surface. So, the material for the surface layer of subgrade bed should have high strength, elastic modulus, wear resistance and invented filtration. The graded sand gravel, which is used as the filler for the surface layer of railway subgrade bed, has such features as high mechanical strength, high water stability, easy obtaining, convenient construction, low cost and so forth. The purpose of this study is to physically blend local sand gravel materials to solve the defect of excessive fine particle content, so that it can meet the grading requirements of the specification and design standards and also to provide a general calculation method and solution for the mix ratio design of natural sand gravel. In combination with a foreign project, the dissertation expatiated on the calculation method for improving the gradation defects of natural sand gravel by the blending method. Then, according to local conditions, the author successfully solved the gradation defects of natural sand gravel mixture with the said method and achieved good economic and social benefits.},
 year = {2019}
}

Copy | Download

TY  - JOUR
T1  - Study on Gradation Improvement of Gravel and Sand for Surface Layer of Railway Subgrade by Blending Method
AU  - Yang Jingwei
Y1  - 2019/03/25
PY  - 2019
N1  - https://doi.org/10.11648/j.ajtte.20190401.11
DO  - 10.11648/j.ajtte.20190401.11
T2  - American Journal of Traffic and Transportation Engineering
JF  - American Journal of Traffic and Transportation Engineering
JO  - American Journal of Traffic and Transportation Engineering
SP  - 1
EP  - 6
PB  - Science Publishing Group
SN  - 2578-8604
UR  - https://doi.org/10.11648/j.ajtte.20190401.11
AB  - As the direct foundation of the track, the surface layer of high-speed railway subgrade bed is one of the important parts of the subgrade. Its main function is to transmit and spread the vertical load of the upper ballast bed and the vehicle dynamic load to maintain the long-term stability of the subgrade bed surface. So, the material for the surface layer of subgrade bed should have high strength, elastic modulus, wear resistance and invented filtration. The graded sand gravel, which is used as the filler for the surface layer of railway subgrade bed, has such features as high mechanical strength, high water stability, easy obtaining, convenient construction, low cost and so forth. The purpose of this study is to physically blend local sand gravel materials to solve the defect of excessive fine particle content, so that it can meet the grading requirements of the specification and design standards and also to provide a general calculation method and solution for the mix ratio design of natural sand gravel. In combination with a foreign project, the dissertation expatiated on the calculation method for improving the gradation defects of natural sand gravel by the blending method. Then, according to local conditions, the author successfully solved the gradation defects of natural sand gravel mixture with the said method and achieved good economic and social benefits.
VL  - 4
IS  - 1
ER  -

Copy | Download