TY - GEN
T1 - Large Deformation Finite Element Analysis of CPT in Calcareous Sands
AU - Pei, Huimin
AU - Wang, Dong
AU - Yin, Zhenyu
AU - Liu, Qingbing
AU - Zheng, Jingbin
N1 - Publisher Copyright:
© 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/1
Y1 - 2021/1
N2 - The tip resistance measured within the cone penetration test (CPT) can be used to predict the pile tip resistance under axial loading, due to the geometric similarity. Most of the existing correlations were established in terms of siliceous sands, while the data for calcareous sands are limited. Calcareous sands in situ are featured with higher peak internal friction angle, but the strength reduction may be significant due to particle breakage. In this paper, a large deformation finite element approach, the Abaqus finite element package utilizing the Arbitrary Lagrangian Eulerian method (ALE) is used to study cone penetration in calcareous sands. A constitutive model proposed by Yin et al. (2016) and Wu et al. (2017) is incorporated into ALE to describe calcareous sands. The CPT in silicon sands is replicated by a modified Mohr-Coulomb model as well for comparison purpose. Frequent mesh generations are conducted in ALE, to avoid distortion of soil elements around the cone tip. The numerical results of cone tip resistance agree reasonably well with the existing data from centrifuge tests. It demonstrates that the modified Mohr-Coulomb and SIMSAND-Br models have potential to capture the behaviors of silica and calcareous sands. The cone resistance in calcareous sands is found to be affected remarkably by particle breakage around the cone.
AB - The tip resistance measured within the cone penetration test (CPT) can be used to predict the pile tip resistance under axial loading, due to the geometric similarity. Most of the existing correlations were established in terms of siliceous sands, while the data for calcareous sands are limited. Calcareous sands in situ are featured with higher peak internal friction angle, but the strength reduction may be significant due to particle breakage. In this paper, a large deformation finite element approach, the Abaqus finite element package utilizing the Arbitrary Lagrangian Eulerian method (ALE) is used to study cone penetration in calcareous sands. A constitutive model proposed by Yin et al. (2016) and Wu et al. (2017) is incorporated into ALE to describe calcareous sands. The CPT in silicon sands is replicated by a modified Mohr-Coulomb model as well for comparison purpose. Frequent mesh generations are conducted in ALE, to avoid distortion of soil elements around the cone tip. The numerical results of cone tip resistance agree reasonably well with the existing data from centrifuge tests. It demonstrates that the modified Mohr-Coulomb and SIMSAND-Br models have potential to capture the behaviors of silica and calcareous sands. The cone resistance in calcareous sands is found to be affected remarkably by particle breakage around the cone.
KW - Calcareous sand
KW - Cone penetration tests
KW - Finite element method
KW - Large deformation analysis
KW - Particle breakage
UR - http://www.scopus.com/inward/record.url?scp=85101521124&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-64518-2_65
DO - 10.1007/978-3-030-64518-2_65
M3 - Conference article published in proceeding or book
AN - SCOPUS:85101521124
SN - 9783030645175
T3 - Lecture Notes in Civil Engineering
SP - 552
EP - 559
BT - Challenges and Innovations in Geomechanics - Proceedings of the 16th International Conference of IACMAG - Volume 2
A2 - Barla, Marco
A2 - Di Donna, Alice
A2 - Sterpi, Donatella
PB - Springer Science and Business Media Deutschland GmbH
T2 - 16th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2021
Y2 - 5 May 2021 through 8 May 2021
ER -