A conventional way to identify bridge frequencies is utilizing vibration data measured directly from the bridge. A drawback with this approach is that the deployment and maintenance of the vibration sensors are generally costly and time-consuming. One way to cope with the drawback is an indirect approach utilizing vehicle vibrations while the vehicle passes over the bridge. In the indirect approach, however, the vehicle vibration includes the effect of road surface roughness, which makes it difficult to extract the bridge modal properties. One solution may be subtracting signals of two trailers towed by a vehicle to reduce the effect of road surface roughness. A simplified vehicle-bridge interaction model is used in the numerical simulation; the vehicle - trailer and bridge system are modeled as a coupled model. In addition, a laboratory experiment is carried out to verify results of the simulation and examine feasibility of the damage detection by the indirect method.
|Title of host publication||Proceedings of the 28th KKHTCNN Symposium on Civil Engineering|
|Number of pages||4|
|Publication status||Published - Nov 2015|
|Event||The 28th KKHTCNN Symposium on Civil Engineering - Chulalongkorn University, Bangkok, Thailand|
Duration: 16 Nov 2015 → 18 Nov 2015
|Conference||The 28th KKHTCNN Symposium on Civil Engineering|
|Period||16/11/2015 → 18/11/2015|