| The overall response behavior of skewed highway bridges under both service and seismic loads is inherently complex. Therefore, there is continuing research into the effects of skew and simplified analysis methods that properly capture these effects. This study examines the seismic response of a three-span continuous concrete box girder bridge modeled with 0, 30, 45, and 60 degree skew angles. To assess the seismic response, finite element (FE) and beam-stick (BS) models are developed using SAP2000. Two abutment support conditions are also considered: with and without shear keys. To study the effects of skew angle, modal, nonlinear static pushover, and linear and nonlinear time history analyses are conducted. Three pushover load profiles are examined. Finally, comparisons are made between FE and BS models, skew angles, abutment support conditions, and time history and pushover analyses. |
