SOUNDNESS EVALUATION OF BRIDGE BEARING BASED ON TWO PLACES DISPLACEMENT MEASUREMENT USING MEMS ACCELEROMETERS

Abstract

In steel bridge maintenance, it is important to evaluate the soundness of bridge bearing. Movable bearing which doesn't work properly against external loads may cause stress concentrations that ultimately lead to fatigue damage.
In the present study, field measurements in a bridge in service were first performed to determine bridge displacement responses at the longitudinal center and movable bearing by using MEMS sensors. Then, based on the determined displacemet responses at the longitudinal center and movable bearing, the method to evaluate the soundness of bridge bearing against external load was proposed. Finally, by conducting FE analysis, the effectiveness of the proposed method was verified.