GIRS 2023-11: Influence of Ground Motion Selection and Scaling Approaches on Seismic Performance Assessment of Bridges

By: Esra Zengin, Saiid Saiidi, Yousef Bozorgnia
DOI: 10.34948/N3Z30Q

Abstract: This study aims to investigate the impact of different ground motion selection and scaling (GMSS) approaches on the seismic response assessment of bridge structures. Nonlinear response history analyses (NRHAs) are conducted on a typical three-span bridge located in five sites across California. The five pulse records are explicitly selected from the pool of 25, all of which fall within the specified pulse period range. In addition to the traditional GMSS approach, which scales the ground motion to a target spectrum derived from elastic probabilistic seismic hazard analysis (PSHA), a recently proposed GMSS approach is employed.

(full abstract available in the report)