PERFORMANCE BASED STABILIZATION OF SEISMICALLY UNSTABLE SLOPES BY LARGE DIAMETER PILES

This paper aims at summarizing the methodology, proposed by Ozcebe (2014) to estimate the amount of reduction in residual displacements demand of pile-reinforced slopes through normalized mean stabilization curves. Ozcebe (2014) carried out numerous advanced numerical analyses using FLAC 2D and FLAC 3D commercial computer programs (Itasca, 2011 and Itasca, 2009) which were functional for setting up an innovative performance-based design method. Relatively simple elastic-plastic constitutive law with hysteretic unloading-reloading associated with Mohr-Coulomb yield criterion has been chosen to idealize soil response which had been tested and calibrated on the basis of two seismic centrifuge tests carried out in the ISMGEO laboratory at Seriate in Northern Italy, which stands out of scope of the current paper.