Authors
1
Ph.D. Candidate, Department of Civil Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran
2
Associate Professor, Department of Civil Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran
3
Professor, Department of Civil Engineering, University of Tabriz, Tabriz, Iran
4
Assistant Professor, Department of Electrical Engineering, Tabriz Branch, Islamic Azad university, Tabriz , Iran
5
Assistant Professor, Department of Civil Engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran
10.22034/ceej.2024.58537.2287
Abstract
Evaluation of pile performance against seismic loading is one of the most important issues in geotechnical engineering. The purpose of this study is to investigate the factors influencing the accuracy of two-dimensional simulations of the pile-soil-pavement system under earthquake vibrations. The necessity of conducting these investigations lies in improving the accuracy of two-dimensional analyses in order to reduce computational costs. Studies have shown that proper simulation of the interface element and the behavior model used for the soil has a significant effect on the accurate estimation of pile response. Improving fully elastic-plastic behavioral models (Mohr-Coulomb and Drucker-Prager) in dynamic analysis is another important issue. In this context, accurate estimation of moduli, such as effective shear strain, is important in dynamic analysis. In this study, effect of these parameters on predicting the seismic response of the pile as accurately as possible has been evaluated in two-dimensional form using Abaqus software and compared with the experimental results reported from centrifuge tests. Based on the results, the two-dimensional analysis was able to calculate the maximum bending moment of the section with an error of less than 1%. However, the error rate in estimating the maximum displacement of the pile was found to be around 15% in the best case. This result indicates that although the two-dimensional analysis, considering the factors proposed in the present study, was able to provide high accuracy in estimating the maximum bending moment of the pile, three-dimensional analysis is still necessary to accurately investigate the displacement of the pile.
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