Title: Condition Assessment of Bridges under Moving Loads with New Vibration based Methods
Speaker: Dr Jun Li, Senior Lecturer, Department of Civil Engineering/Centre for Infrastructural Monitoring and Protection, Curtin University, Australia
Time：21st,Sept,2016,10:00-12:00
venue：A326 Anzhong Building
Presentation Abstract:
This presentation talks about the bridge condition assessment under moving loads with new vibration based methods. Several new techniques will be introduced. The phase trajectories of multi-sensor responses will be discussed and a damage index is defined as the separated distance between the trajectories of undamaged and damaged structures to identify the damage existence and location. The wavelet transmissibility based concept will also be introduced and presented for the bridge damage identification under moving loads. Finally, time frequency analysis with measurements from newly developed relative displacement sensors will be conducted to identify the shear link damage in composite bridges. Experimental studies demonstrate the proposed approaches can be used to successfully identify the damage in bridge models under moving loads.
