00000cab a22000003a 4500 UP-99796217610177629 Buklod 20231008000527.0 a grb 001 u| ta 120127s xx d | ||r ||||| || DENG eng Sextos, Anastasios G. Inelastic dynamic analysis of RC bridges accounting for spatial variability of ground motion, site effects and soil structure interaction phenomena. Part 2 Parametric study. pp. 629-652 The methodology for dealing with spatial variability of ground motion, site effects and soil structure interaction phenomena in the context of inelastic dynamic analysis of bridge structures, and the associated analytical tools established and validated in a companion paper are used herein for a detailed parametric analysis, aiming to evaluate the importance of the above effects in seismic design. For a total of 20 bridge structures differing in terms of structural type (fundamental period, symmetry, regularity, abutment conditions, pier to deck connections), dimensions (span and overall length) and ground motion characteristics (earthquake frequency content and direction of excitation), the dynamic response corresponding to nine levels of increasing analysis complexity was calculated and compared with the 'standard' case of a fixed base, uniformly excited, elastic structure for which site effects were totally ignored. It is concluded that the dynamic response of RC bridges is indeed strongly affected by the coupling of the above phenomena that may adversely affect displacements and/or action effects under certain circumstances. Evidence is also presented that some bridge types are relatively more sensitive to the above phenomena, hence a more refined analysis approach should be considered in their case. Bridges. Spatial variability. Site effects. Soil structure interaction. Seismic design. Earthquake engineering & structural dynamics. 32, 4 (2003). FO UPD DENG Article