Vibration-Based Monitoring for Transverse Cooperative Working Performance of Assembled Concrete Multi-Girder Bridge: System Design, Implementation and Preliminary Application

The hinge joints of the assembled concrete multi-girder bridge (ACMGB) are main components transverse transmission loads and decline their capacity would lead to degradation cooperative working performance (TCWP) multi-beam system. As key this kind bridges, its severe result in single-girder-bearing phenomenon inducing collapse. In order detect TCWP timely, paper proposes a vibration-based monitoring scheme ACMGB, where structural vibration information collected by accelerometers dynamic strain guages at bottom girders mid-span. These data then used for identifying mode shape system derivated index evaluate TCWP. This has been implemented on three adjacent ACMGBs Tongji Road Viaduct preliminary analysis proves effectiveness rationality proposed paper, which potential evaluation.