Nonlinear Analysis for Investigating Seismic Performance of a Spun Pile-Column of Viaduct Structure

Slab-on-pile SOP viaducts have been constructed on several highways and railways in Indonesia, but there are certain doubts about some practical structural seismic design concepts. Therefore, this study aims to investigate the performance of a single spun pile column for viaduct using nonlinear analysis. The essential variables used include effect top reinforced concrete infill treatment, soil-pile structure interaction (SPSI), different response modification factors (R). Moreover, was designed as macro model with force-based beam-column element having fiber section plastic hinge. static pushover analysis quasi-static cyclic were also conducted determine displacement limit state equal viscous damping, respectively. Furthermore, seven pairs ground motion excitations line ASCE 7-10 61-14. results showed that implementation top-pile treatment slightly reduced evoked more severe curvature embedded zone. In addition, behavior better than those without when considering SPSI. This recommends factor 1.5 avoid probable brittle failure occurrence under earthquake load. Doi: 10.28991/CEJ-2023-09-07-02 Full Text: PDF