DISPLACEMENT MEASUREMENT OF 3-SPAN CONTINUOUS BOX-GIRDER BRIDGE WITH ORTHOTROPIC STEEL DECK USING MEMS ACCELEROMETERS

抄録

 Bridges represent vital transportation infrastructure, and their malfunction can have serious repercussions. Monitoring bridge displacement is essential not only for maintenance but also for informing future design decisions. Unfortunately, conventional displacement measurement methods are complex. On the other hand, MEMS sensors are capable of field measurement with their compact size and the absence of a need for reference points. While extensive research has focused on understanding the displacement behavior of single-span bridges, it is equally important to investigate the behavior of multiple-span bridges. The present study used MEMS accelerometers to measure the displacement of a 3-span continuous box girder bridge with an orthotropic steel deck. The displacement responses measured using MEMS accelerometers were compared with strain responses to verify the accuracy of those.