Numerical simulation of embankment on sloped weak ground reinforced by pile-net structure with collar beam

HUANG Bing; GENG Jian-yu; JIANG Xin; LIANG Duo-wei; QIU Yan-jun

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HUANG Bing, GENG Jian-yu, JIANG Xin, LIANG Duo-wei, QIU Yan-jun. Numerical simulation of embankment on sloped weak ground reinforced by pile-net structure with collar beam[J]. Journal of Traffic and Transportation Engineering, 2014, 14(6): 35-43.

Citation:

HUANG Bing, GENG Jian-yu, JIANG Xin, LIANG Duo-wei, QIU Yan-jun. Numerical simulation of embankment on sloped weak ground reinforced by pile-net structure with collar beam[J]. Journal of Traffic and Transportation Engineering, 2014, 14(6): 35-43.

Citation:

HUANG Bing, GENG Jian-yu, JIANG Xin, LIANG Duo-wei, QIU Yan-jun. Numerical simulation of embankment on sloped weak ground reinforced by pile-net structure with collar beam[J]. Journal of Traffic and Transportation Engineering, 2014, 14(6): 35-43.

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Numerical simulation of embankment on sloped weak ground reinforced by pile-net structure with collar beam

HUANG Bing^{1, 2, 3, 4
,},
GENG Jian-yu^{1, 2, 3},
JIANG Xin^{1, 2, 3},
LIANG Duo-wei^{1, 2, 3},
QIU Yan-jun^{1, 2, 3
,}

1.
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
2.
Highway Engineering Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
3.
Key Laboratory of High-Speed Railway Engineering of Ministry of Education, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
4.
Sichuan Chengdenan Expressway Limited Liability Company, Chengdu 610041, Sichuan, China

More Information

Author Bio:
HUANG Bing (1969-), male, senior engineer, doctoral student, +86-28-66366340, huangbingzjz@sina.com

QIU Yan-jun (1966-), male, professor, PhD, +86-28-66366340, publicqiu@vip.163.coma
Received Date: 2014-06-18
Publish Date: 2014-12-25

Abstract

Abstract

To investigate the working mechanism of pile-net structure with collar beam applied in the embankment on sloped weak ground, the finite element model of embankment on sloped weak ground reinforced by pile-net structure with collar beam was established.Some mechanical responses with or without reinforcement, including potential slip surface behaviors, stability safety factors, geogrid tensions, embankment top surface settlements and ground lateral displacements, were compared.The sensitivities of core design parameters, such as collar beam location type, elastic modulus and thickness, were analyzed.Study result shows that the pile-net structure with collar beam can decrease the embankment maximum settlement, differential settlement and ground lateral deformation by 88.7%, 90.3% and 96.6%, respectively, and improve the stability safety factor by 26.2%.Arranging the collar beam crossbar is beneficial toimprove the embankment stability safety and reduce the ground lateral displacement.Decreasing the elastic modulus of collar beam appropriately will not cause relatively large unfavorable effect, and too thin collar beam is not suitable.
- subgrade engineering,
- embankment on sloped weak ground,
- pile-net structure with collar beam,
- nonlinear finite element,
- mechanical response

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References(20)

References

[1]	JIANG Xin, WEI Yong-xing, QIU Yan-jun. Numerical simulation of subgrade embankment on sloped weak ground[J]. Journal of Traffic and Transportation Engineering, 2002, 2 (3): 41-46. (in Chinese). http://transport.chd.edu.cn/article/id/200203009
[2]	JIANG Xin, WEI Yong-xing, QIU Yan-jun. Stability of subgrade embankment on sloped weak ground[J]. Journal of Traffic and Transportation Engineering, 2003, 3 (1): 30-34. (in Chinese). http://transport.chd.edu.cn/article/id/200301007
[3]	QIU Yan-jun, WEI Yong-xing, LUO Qiang. Highway embankments over sloped ground and influence on pavement responses[C]∥PENG Qi-yuan, WANG K C P, QIU Yanjun, et al. Proceedings of the International Conference on Transportation Engineering 2007. Reston: ASCE, 2007: 1615-1620.
[4]	JIANG Xin, QIU Yan-jun, WEI Yong-xing. Engineering behavior of subgrade embankment on sloped weak ground based on strength reduction FEM[J]. Chinese Journal of Geotechnical Engineering, 2007, 29 (4): 622-627. (in Chinese). doi: 10.3321/j.issn:1000-4548.2007.04.026
[5]	JIANG Xin, QIU Yan-jun, WEI Yong-xing, et al. Application of SSRM in stability analysis of subgrade embankments over sloped weak ground with FLAC3D[C]∥CHEN Zu-yu, ZHANG Jian-min, LI Zhong-kui, et al. Landslides and Engineered Slopes: From the Past to the Future. London: Taylor and Francis Group, 2008: 741-746.
[6]	LIU Jin-nan, JIANG Xin, QIU Yan-jun. Numerical simulation on the engineering behavior of embankment over sloped weak ground[J]. China Railway Science, 2011, 32 (2): 8-14. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-ZGTK201102002.htm
[7]	LIU Jin-nan, JIANG Xin, QIU Yan-jun. Influence of weak layer properties on deformation of embankment over sloped weak ground[J]. Journal of Southwest Jiaotong University, 2013, 48 (2): 21-27. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-XNJT201302019.htm
[8]	LIU Jin-nan, JIANG Xin, HUANG Ming-xing, et al. Review of the research progress about embankment over sloped weak ground[C]∥PENG Qi-yuan, WANG K C P, QIU Yan-jun, et al. Proceedings of the International Conference on Transportation Engineering 2011. Reston: ASCE, 2011: 2086-2091.
[9]	YOU Chang-long, ZHAO Cheng-gang, ZHANG Huancheng, et al. Subgrade treatment practice of the plateau slope on soft clay[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22 (1): 126-130. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX200301023.htm
[10]	ZHANG Liang, WEI Yong-xing, LUO Qiang. Study on reinforcement projects for slope flabby subgrade embankment based on centrifugal model tests[J]. Journal of Railway Engineering Society, 2004 (1): 73-76, 64. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-TDGC200401017.htm
[11]	LUO Qiang, HU Yong-gang, ZHANG Liang, et al. The geotechnical centrifuge model experiment study of the slope softsoil foundation improved by cement soil mixing method[J]. China Railway Science, 2010, 31 (4): 12-19. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-ZGTK201004005.htm
[12]	LIU Jin-long, CHEN Lu-wang, WANG Dong-lin. Characters of embankment on inclined weak foundation[J]. Rock and Soil Mechanics, 2010, 31 (6): 2006-2010. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201006055.htm
[13]	JIANG Xin, LIU Jin-nan, HUANG Ming-xing, et al. Numerical simulation of embankment on sloped weak ground reinforced by anti-slide piles[J]. Rock and Soil Mechanics, 2012, 33 (4): 1261-1267. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201204046.htm
[14]	LIANG Duo-wei. The numerical simulation of embankment over slope weak ground reinforced by gravel piles joint with slideresistant piles and non-embedded pile-plank structure[D]. Chengdu: Southwest Jiaotong University, 2013. (in Chinese).
[15]	JIANG Xin, LING Jian-ming. Numerical simulation of mechanical behavior for pile-column-supported subgrade over soft ground[J]. Journal of Traffic and Transportation Engineering, 2007, 7 (6): 70-75. (in Chinese). http://transport.chd.edu.cn/article/id/200706014
[16]	WEI Yong-xing, LUO Qiang, QIU Yan-jun. Research and Practice on Technology of Embankment over Sloped Weak Ground[M]. Beijing: China Communications Press, 2011. (in Chinese).
[17]	HUANG Ming-xing. The numercial analysis of pile-net structure reinforce embankment over slope weak ground[D]. Chengdu: Southwest Jiaotong University, 2009. (in Chinese).
[18]	WU Pei-pei. Application of RC pile-net structure with collar beam in soft foundation on slope[J]. High Speed Railway Technology, 2012, 3 (3): 14-17. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-GSTL201203005.htm
[19]	BRINKGREVE R B J. PLAXIS 2D-Version 8 Reference Manual[M]. Netherlands: A. A. Balkema Publishers, 2002.
[20]	ZHANG Ding-wen. Research on the deformation features of widening of highway on soft ground[D]. Nanjing: Southeast University, 2004. (in Chinese).