Structural Damage Identification in Vehicle-Bridge System Based on Measured Dynamic Response

Tai Ping Chang

doi:10.4028/www.scientific.net/AMM.764-765.1139

Paper Titles

Seismic Response for a One-Third Scale-Down Vertical Cylindrical Cask Specimen Using Shaking Table Testing
p.1119

Seismic Response for a Reinforce Concrete Specimen Considering Corrosive Hazards
p.1124

Seismic Testing and Verification of a 1/25 Scaled-Down Reinforced Concrete Specimen for the Reactor Building
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Shear Strength of the Perfobond Connection of a Steel-Concrete Composite Slim Floor System
p.1134

Structural Damage Identification in Vehicle-Bridge System Based on Measured Dynamic Response
p.1139

Technology and Conclusions from Long-Term Monitoring of Large Span Roof Timber Construction
p.1144

The Effect of Seismic Design Methods on Design Eccentricities in Building with Planar Irregularities
p.1149

The Life Cycle Assessment of Carbon Dioxide Emission of Four Major Sewage Treatment Plants in Taiwan
p.1154

Vertical Connector Performance of Modular Roadway Slab
p.1159

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 764-765Structural Damage Identification in Vehicle-Bridge...

Structural Damage Identification in Vehicle-Bridge System Based on Measured Dynamic Response

Abstract:

In the present study, a detailed vehicle–bridge dynamic interaction model is established, and the bridge is modeled as laminated composite beams which are discretized as finite beam elements. The vehicle-induced responses of the bridge in the damaged state are used as input data for damage identification and the response sensitivities with respect to the damage indices of the elements are calculated to establish the sensitivity matrix. Based on the error between the measured response and the computed one as a minimization criterion, the sensitivity equation is solved by the least-squares method, and then the damage is located and quantified with the finite element model updating technique. It can be concluded that only one measurement point is required to detect the damage of the bridge, and location of the measurement point does not significantly affect the identification result. Furthermore, it is noted that the absolute damage of any beam element is well identified by using either the displacement response, velocity response or acceleration response.