[1] Xu Zhijun, Zheng Junjie, Bian Xiaoya, et al. Reliability analysis of anti-pull piles under excavation [J]. Journal of Southeast University (English Edition), 2012, 28 (2): 203-208. [doi:10.3969/j.issn.1003-7985.2012.02.013]

Copy

Reliability analysis of anti-pull piles under excavation()

Share：

Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

28

Issue:

2012 2

Page:

203-208

Research Field:

Civil Engineering

Publishing date:

2012-06-30

Info

Title:

Reliability analysis of anti-pull piles under excavation

Author(s):

Xu Zhijun¹;  2;  Zheng Junjie¹;  Bian Xiaoya¹;  Liu Yong³

¹ School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China
² School of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou 450052, China
³

Keywords:

excavation;  reliability;  anti-pull piles;  reduction factor;  excavation depth;  excavation diameter

PACS:

TU473

DOI:

10.3969/j.issn.1003-7985.2012.02.013

Abstract:

The impact of excavation on the reliability of anti-pull piles is studied, and three cases of reliability analysis, named reliability of ultimate limit state(ULS), reliability of serviceability limit state(SLS)and reliability of system(SYS)are studied. The reduction factor of the pile capacity is used to calculate the reliability indices for the three cases. The ratio ξ of the pile capacity of SLS to the pile capacity of ULS has a significant influence on the reliability indices of SLS and SYS. The mean value μ_ξ of the ratio ξ is considered as a random variable to study the reliability indices of SLS and SYS. The numerical example demonstrates that the excavation depth and the excavation diameter are proved to have significant influences on the reduction factor of the pile capacity and the reliability indices. The reliability indices decrease with the increase in the excavation depth, and the excavation diameter has a considerable influence on the reliability index when the excavation is relatively deep. In addition, μ_ξ has a significant influence on the reliability indices of SLS and SYS. For a more accurate estimation of μ_ξ, further research should be conducted to study μ_ξ.

References:

[1] Dash B K, Pise P J. Effect of compressive load on uplift capacity of model piles[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2003, 129(11): 987-992.
[2] Alawneh A S, Malkawi A I H, Al-deeky H. Tension tests on smooth and rough model piles in dry sand[J]. Canadian Geotechnical Journal, 1999, 36(4): 746-753.
[3] Liu K F, Xie X Y, Zhang J F, et al. Study of pullout bearing capacity of diving dry-vibrated compacted and anti-pull stone column[J]. Rock and Soil Mechanics, 2004, 25(12): 1937-1341.(in Chinese)
[4] Leung C F, Chow Y K. Behavior of pile subject to excavation induced soil movement[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2000, 129(11): 947-954.
[5] Wang W D, Huang M S, Wang J H, et al. Working properties and calculation methods of pile under deep excavation[R]. Shanghai: Shanghai East China Architecture Design & Research Institute Co., Ltd, 2008.(in Chinese)
[6] Wang W D, Wu J B. Design and analysis of uplift pile under deep excavation[J]. Chinese Journal of Buildings Structures, 2010, 31(5): 202-208.(in Chinese)
[7] Poulos H G. Pile response due to excavation induced lateral soil movement[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1997, 123(2): 94-99.
[8] Phoon K K. Reliability-based design in geotechnical engineering: computations and applications[M]. New York: Taylor & Francis, 2008.
[9] Zhang L M. Reliability verification using proof pile load tests[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2001, 130(11): 1203-1213.
[10] American Association of State Highway and Transportation Officials(AASHTO). Load and resistance factor design(LRFD)bridge design specifications[S]. Washington DC: American Association of State Highway and Transportation Officials, 1997.
[11] McVay M C, Birgisson B, Zhang L M, et al. Load and resistance factor design(LRFD)for driven piles using dynamic methods — a Florida perspective[J]. Geotechnical Test Journal, 2000, 23(1): 55-66.
[12] JGJ 94—2008 Technical code for building pile foundations[S]. Beijing: China Architecture & Building Press, 2008.(in Chinese)
[13] Zhang L M, Li D Q, Tang W H. Impact of routine quality assurance on reliability of bored piles[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2006, 132(5): 622-630.
[14] Wang Y, Kulhawy F H. Reliability index for serviceability limit state of building foundations[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2008, 134(11): 1587-1594.

Memo

Memo:

Biographies: Xu Zhijun(1984—), male, graduate; Zheng Junjie(corresponding author), male, professor, zhengjj@hust.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.50978112).
Citation: Xu Zhijun, Zheng Junjie, Bian Xiaoya, et al. Reliability analysis of anti-pull piles under excavation[J].Journal of Southeast University(English Edition), 2012, 28(2):203-208.[doi:10.3969/j.issn.1003-7985.2012.02.013]

Common functions