Numerical modeling of piles in sandy soils considering stress dependent modulus of elasticity

• Published in: Computer methods and recent advances in geomechanics : peoceedings of the 14th International Conference of International Association for Computer Methods and Recent Advances in Geomechanics, Kyoto, Japan, 22-25 September 2014 pp. 973 - 977
• Main Authors: Ahmadi, Mohammad Mehdi, Abadi, Siavash Mahvelati Shams
• Format: Conference Proceeding
• Language: English
• Published: Leiden Taylor & Francis Books Ltd 01.01.2015
• Subjects: Agreements; Civil engineering; Dependence; Design; Elasticity; Friction; Geotechnical engineering; Load; Load tests; Mathematical models; Methods; Modulus of elasticity; Numerical prediction; Pile bearing capacities; Pile foundations; Pile load tests; Researchers; Sandy soils; Soil bearing capacity; Soil conditions; Soil layers; Soil modulus; Soil stresses; Stress state; Studies; Superstructures
• ISBN: 9781138001480; 1138001481
• DOI: 10.1201/b17435-169

Pile Foundations are used to transfer loads from superstructures to the underlying competent soil layers. Predicting pile bearing capacity is among the most interesting subjects for geotechnical engineers. In this study, a single pile is modeled in axisymmetric condition. The soil is considered to be a sandy soil. Then, results of the model were verified with a full scale pile load test performed by previous researchers. In order to take into consideration the real behavior of sandy soils, a variation of modulus of elasticity with respect to the changes in the mean effective stress was taken into account. The dependency of soil modulus to the mean effective stress makes the model more realistic, and by doing so a good agreement was observed between the predicted results of the numerical model in this study and the measured ones reported by other researchers.