NUMERICAL INVESTIGATION OF RESPONSE MECHANISMS OF A SINGLE PILE UNDER GROUND DEFORMATION AND RUPTURE INDUCED BY REVERSE FAULTING
Journal
Journal of GeoEngineering
Journal Volume
19
Journal Issue
1
Start Page
1
End Page
16
Date Issued
2024-01-01
Author(s)
DOI
10.6310/jog.202403_19(1).1
Abstract
Fault dislocation can cause ground deformation and even rupture, thereby directly influencing the behavior of structure foundations. The mechanisms underlying the response of a foundation are complex. This study performs three-dimensional finite element analyses to investigate the mechanisms underlying single-pile responses under the actions of ground deformation and rupture due to reverse faulting. In the analyses, we assume that a single pile is embedded in cohesionless soil and that reverse faulting occurs. A centrifuge test reported in the literature is simulated to validate the numerical model and calibrate the model’s parameters. In the parametric analyses, we consider pile location with respect to the initial location of the fault tip. The results reveal that the pile response depends on the degree of fault offset and relative distance between the pile and fault tip. Different positions of the main ground deformation or rupture zone with respect to the pile exhibit different pile response mechanisms. With increasing fault offset, three and two response mechanisms are identified for the conditions before and after the ground rupture reaches the pile, respectively. © (2024), (Taiwan Geotechnical Society). All Rights Reserved.
Subjects
centrifuge tests
finite element analysis
Fault dislocation
ground rupture
reverse faulting
Type
journal article