ABSTRACT
Bi and Hao (2013) investigated pounding responses between the abutment and the adjacent bridge deck and between two adjacent bridge decks of a two-span simply-supported bridge under spatially varying ground motions based on a detailed 3D finite element model. Hao et al. (2013) published a state-of-the-art review of the impact models, experimental investigations and pounding mitigation methods for the seismic-induced pounding of bridge structures. Li and Chouw (2014) experimentally investigated the inelastic response of a bridge with two identical segments subjected to spatially varying ground motions including pounding. Guo et al. (2015) proposed a phenomenological contact-element model considering slight nonuniform contact for pounding analysis of highway bridges under seismic excitations. Jankowski (2015) analyzed the pounding between adjacent superstructure segments of a multi-supported highway elevated bridge under 3D spatially varying seismic excitation with three-span continuous deck. However, the pounding phenomenon of bridges excited by vertical earthquake is rarely studied, especially the occurring condition and rule of vertical poundings. Therefore, it is necessary to investigate vertical pounding characteristics of bridge under strong vertical ground motion.
