Abstract:
It is important to study structures and their retrofitting techniques in order to avoid earthquake-induced seismic damage within countries that are prone to earthquakes. Todays, micropiles are employed as useful structural components for seismic behavior improvement. The present study analyzes inclined micropiles subjected to seismic loading by using the three-dimensional finite difference method (FDM). FDM assumes an idealized three-dimensional soil-micropile model to perform logical behavior evaluation in the event of an earthquake. Linear and elastic micropiles and elastoplastic soil were employed in this study. The Mohr-Coulomb criterion was employed in the failure control of the micropiles. The micropiles were subjected to the 1978 Tabas earthquake records. The numerical results were compared to experimental data. The comparison revealed good agreement between the numerical results and experimental data. The inclined micropiles were found to sufficiently enhance soil strength under seismic loading, inducing smaller displacements than vertical micropiles. Furthermore, the soil and inclined micropiles showed salient interaction.
Abstract: Theme 6