Fundamental Study on Vibration Characteristics of Marker Columns and Lighting Poles on Highway Bridges

Abstract

Vibration due to traffic and wind causes almost all fatigue damage to portal marker columns and lighting poles on highway bridges. Development of technology, which can evaluate the possibility of the existence and occurrence of the fatigue damage efficiently, is necessary. The vibration characteristics decided by the locations and types of portal marker columns and lighting poles is investigated through modal frequency response analysis in this study. Various types of damage are generated in experimental models for portal marker columns, and a vibration experiment is carried out in this study. The relations between the extent of damage and vibration characteristics can be investigated through the vibration measurement and the analysis of a portal marker column.