Inelastic Static and Dynamic Analysis of Short R/C Bridges Subjected to Lateral Loads

摘要

A multi-degree-of-freedom nonlinear analytical model is developed for response analysis of highway bridges subjected to lateral static loads, free vibration, and earthquake motions. Translational and rotational springs are incorporated at pier foundations, bases, and abutments to account for nonlinear effects; the deck and piers are treated as line elements. The Ramberg-Osgood model and the TQ-Hyst model are used to represent the cyclic behavior of the nonlinear components. The analytical model is used to determine the static and free vibration response of a bridge in Nevada. A reasonably good correlation between the calculated and measured results is achieved. The model is also used to evaluate the seismic performance of the bridge in accordance with recently developed Applied Technology Council Guidelines. The bridge performed well in resisting the loads specified by the seismic code used in its design.