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CLC number: TU473

On-line Access: 2012-01-04

Received: 2011-07-02

Revision Accepted: 2011-11-02

Crosschecked: 2011-12-06

Cited: 3

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Journal of Zhejiang University SCIENCE A 2012 Vol.13 No.1 P.44-55

http://doi.org/10.1631/jzus.A1100172


Coupled 3D discrete-continuum numerical modeling of pile penetration in sand


Author(s):  Jian Zhou, Qi-wei Jian, Jiao Zhang, Jian-jun Guo

Affiliation(s):  Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; more

Corresponding email(s):   jianqiwei1987@gmail.com

Key Words:  Coupled numerical modeling, Discrete-continuum, Micro and macro 3D simulation, Non-circular particles, Pile penetration mechanism


Jian Zhou, Qi-wei Jian, Jiao Zhang, Jian-jun Guo. Coupled 3D discrete-continuum numerical modeling of pile penetration in sand[J]. Journal of Zhejiang University Science A, 2012, 13(1): 44-55.

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author="Jian Zhou, Qi-wei Jian, Jiao Zhang, Jian-jun Guo",
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%A Jiao Zhang
%A Jian-jun Guo
%J Journal of Zhejiang University SCIENCE A
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%DOI 10.1631/jzus.A1100172

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T1 - Coupled 3D discrete-continuum numerical modeling of pile penetration in sand
A1 - Jian Zhou
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J0 - Journal of Zhejiang University Science A
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A1100172


Abstract: 
A coupled discrete-continuum simulation incorporating a 3D aspect and non-circular particles was performed to analyze soil-pile interactions during pile penetration in sand. A self-developed non-circular particle numerical simulation program was used which considered sand near the pile as interacted particles using a discrete element method; the sand away from the pile was simulated as a continuous medium exhibiting linear elastic behaviors. The domain analyzed was divided into two zones. Contact forces at the interface between the two zones were obtained from a discrete zone and applied to the continuum boundaries as nodal forces, while the interface velocities were obtained from the continuum zone and applied to the discrete boundaries. We show that the coupled discrete-continuum simulation can give a microscopic description of the pile penetration process without losing the discrete nature of the zone concerned, and may significantly improve computational efficiency.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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