Abstract
Presented in this paper is numerical analysis of seismic performance of inverted L-shaped box-section steel bridge piers subjected to out-of-plane cyclic loading. The validity of the analytical model is verified by comparisons of hysterestic curves and buckling modes between the analysis and large-scale test specimens. From the analytical results, it is realized that the eccentric vertical load and cyclic loading pattern will cause a significant in-plane displacement, and in the case of inverted L-shaped piers, strength deterioration is greater than that of T-shaped piers. Furthermore, an extensive parametric analysis is performed to propose empirical formulas in order to evaluate strength and ductility of inverted L-shaped box-section steel piers.
