TY - GEN
T1 - Évaluation du tassement des pieux par des modèles simplifiés
AU - Crispin, J. J.
AU - Vardanega, P. J.
AU - Mylonakis, G.
N1 - Funding Information:
The authors acknowledge the support of “Databases to INterogate Geotechnical Observations (DINGO) EP/P020933/1 EPSRC. The first author is supported by EPSRC, grant number EP/N509619/1. Thanks are due to P. Moireaud for his assistance preparing the French abstact. The work reported in this paper has not generated new experimental data.
Publisher Copyright:
© The authors and IGS: All rights reserved, 2019
PY - 2019
Y1 - 2019
N2 - Modelling soil nonlinearity in pile settlement analysis often requires numerical analysis based either on 1-dimensional “t-z” curves or even multi-dimensional constitutive models, which may not be appealing to geotechnical engineers. A number of alternative approaches are available that take advantage of simplified constitutive models and analytical methods to develop solutions that are suitable for spreadsheet calculations. This paper investigates the error introduced by the assumptions in two such models. A theoretical “t-z” curve is developed based on a simplified constitutive model and a new approximate approach developed that incorporates nonlinearity for both shaft and base resistance. This is compared to the predictions of a linear elastic – perfectly plastic method using an informed choice of linear elastic stiffness. A basic sensitivity study is carried out comparing the two approaches with a 1-dimensional numerical solution.
AB - Modelling soil nonlinearity in pile settlement analysis often requires numerical analysis based either on 1-dimensional “t-z” curves or even multi-dimensional constitutive models, which may not be appealing to geotechnical engineers. A number of alternative approaches are available that take advantage of simplified constitutive models and analytical methods to develop solutions that are suitable for spreadsheet calculations. This paper investigates the error introduced by the assumptions in two such models. A theoretical “t-z” curve is developed based on a simplified constitutive model and a new approximate approach developed that incorporates nonlinearity for both shaft and base resistance. This is compared to the predictions of a linear elastic – perfectly plastic method using an informed choice of linear elastic stiffness. A basic sensitivity study is carried out comparing the two approaches with a 1-dimensional numerical solution.
KW - Piles & pilling
KW - Settlement
KW - Soil/structure interaction
UR - http://www.scopus.com/inward/record.url?scp=85111923822&partnerID=8YFLogxK
U2 - 10.32075/17ECSMGE-2019-0388
DO - 10.32075/17ECSMGE-2019-0388
M3 - Conference contribution
AN - SCOPUS:85111923822
T3 - 17th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2019 - Proceedings
BT - 17th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2019 - Proceedings
A2 - Sigursteinsson, Haraldur
A2 - Erlingsson, Sigurour
A2 - Erlingsson, Sigurour
A2 - Bessason, Bjarni
T2 - 17th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2019
Y2 - 1 September 2019 through 6 September 2019
ER -