Numerical simulation of mechanical behavior for pile-column supported subgrade over soft ground

JIANG Xin; LING Jian-ming

Volume 7 Issue 6

Turn off MathJax

Article Contents

Article Navigation > Journal of Traffic and Transportation Engineering > 2007 > 7(6): 70-75

Next Previous

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.

Citation:

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.

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.

Citation:

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.

PDF( 446 KB)

Numerical simulation of mechanical behavior for pile-column supported subgrade over soft ground

Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai 200092, China

More Information

Author Bio:
Jiang Xin(1976-), male, EngD, + 86-21-65981431, xjiang01@163.com

Ling Jian-ming(1966-), male, EngD, professor, + 86-21-65981431, jmling01@yahoo.com.cn
Received Date: 2007-05-12
Publish Date: 2007-12-25

Abstract

Abstract

Based on FLAC(fast Lagrangian analysis of continua) of 2D explicit finite difference method, a numerical simulation model was established to investigate the mechanical behavior of pile-column-supported subgrade(PCSS) over soft ground.Pile, column and reinforcement geogrid were modeled by using pile elements and cable elements respectively, the surface settlement, ground lateral displacement, pore water pressure, stability of the subgrade were studied, the internal force distributions of pile, column and reinforcement geogrid were analyzed, the characteristics of PCSS and traditional subgrade were compared, and the influences of design parameters for pile, column, embankment, reinforcement geogrid and foundation on subgrade settlement and foundation lateral deformation were studied.Analysis result shows that compared with traditional subgrade, the ratios of the maximum surface settlement, differential settlement of subgrade, the maximum lateral deformation of foundation are 1.48%, 1.40% and 0.88% respectively, so the mechanical behavior of the subgrade is better.
- subgrade engineering,
- PCSS,
- soft ground,
- mechanical behavior

FullText(HTML)

References(10)

References

[1]	贾宁. 软土地基高速公路拓宽的沉降性状及处理研究[D]. 杭州: 浙江大学, 2004.
[2]	Xiao Hong, Jiang Guan-lu, Wei Yong-xing, et al. Model testof column-net structure for dedicated passenger line unbal-lasted track[J]. Journal of the China Rail way Society, 2007, 29(2): 126-131. (in Chinese) doi: 10.3321/j.issn:1001-8360.2007.02.023
[3]	Chen Yun-min, Jia Ning, Chen Ren-peng. Soil arch analysisof pile-supported embankments[J]. China Journal of High-way and Transport, 2004, 17(4): 1-6. (in Chinese) doi: 10.3321/j.issn:1001-7372.2004.04.001
[4]	Chen Ren-peng, Jia Ning, Chen Yun-min. Mechanism andsettlement analysis of pile-supported and geogrid-reinforced embankments[J]. Chinese Journal of Rock Mechanics andEngineering, 2005, 24(23): 4 358-4 367. (in Chinese)
[5]	Xu Feng, Chen Ren-peng, Chen Yun-min, et al. Analysis ofpile-supported embankments[J]. Journal of Zhejiang Univer-sity: Engineering Science, 2005, 39(9): 1 393-1 399. (in Chinese) doi: 10.3785/j.issn.1008-973X.2005.09.025
[6]	Chen Ren-peng, Xu Feng, Chen Yun-min, et al. Analysis of be-havior of rigid pile-supported embankment in soft ground[J]. Chi-na Journal of Highway and Transport, 2005, 18(3): 7-13. (in Chinese) doi: 10.3321/j.issn:1001-7372.2005.03.002
[7]	Cao Wei-ping, Chen Ren-peng, Chen Yun-min. Calculationfor pileefficacy of pile-supported reinforced embankments[J]. China Jour-nal of Highway and Transport, 2006, 19(6): 1-6. (in Chinese) doi: 10.3321/j.issn:1001-7372.2006.06.001
[8]	Han J, Gabr M A. Numerical analysis of geosynthetic-rein-forced and pile-supported earth platforms over soft soil[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2002, 128(1): 44-53. doi: 10.1061/(ASCE)1090-0241(2002)128:1(44)
[9]	晏莉. 桩承土工合成材料加筋垫层复合地基作用机理数值分析[D]. 长沙: 长沙理工大学, 2004.
[10]	Yan Shu-wang, Zhou Hong-jie, Cui Wei, et al. Study ongeogrid-reinforced and pile-supported embankment over gulchweak subsoil[J]. Rock and Soil Mechanics, 2005, 26(4): 633-637. (in Chinese) doi: 10.3969/j.issn.1000-7598.2005.04.027