LONG-TERM MONITORING OF AN URBAN EXPRESSWAY BRIDGE USING OPTICAL FIBER SENSOR SYSTEM

Abstract

 In order to realize appropriate bridge maintenance, it is important that we grasp the load acting on the bridge and the response. There is a problem of the overloading vehicle on bridges in urban expressways.
 In this study, we developed the monitoring system using optical fiber sensor having all automatic realtime processing functions including Weigh-in-Motion, and the system was applied to Metropolitan Expressway. Then the behavior of the bridge was monitored for a long term. The load and the response to fluctuate in the short term and in the long term was analyzed.