Eccentric Pullout for Stability of Self-supported Electric Poles Using FE-LEM Package
摘要
This study takes a unique approach to investigate the uplift capacity of self-supported single-pole foundations. It employs finite element limit analysis with OptumG2 software, focusing on the influence of eccentric loading. The analysis explores various parameters, including eccentricities, angle of internal friction, dilatancy angles, embedment ratio, and failure pattern due to eccentricity. The results reveal that pullout load increases with higher embedment ratios but decreases with an increase in eccentricity. Moreover, higher dilatancy angles lead to an increase in the pullout load. The study also presents the failure patterns, showing that for pure vertical pullout (e/B = 0), failure envelopes are symmetrical, whereas, for the eccentric pullout, failure envelopes are asymmetrical with larger plastic zones toward the direction of the eccentric load. These results provide information on the stability and design of lamp post foundation under various loading scenarios, enlightening the audience with new perspectives and knowledge in this field.