Abstract
We suggest economic and efficient bridge damage sensitivity by bridge screening of VRA. VRA is a method to detect bridge damage by using vehicle vibration which is obtained from running vehicle on the bridge. In previous study, the availability of SSMA (Spatial Singular Mode Angle) is indicated as an indicator of bride damage sensitivity. But, SSMA is subject to road roughness and vehicle charasterisitic. They are problems for putting it into practical use. So we reveal the influence of Vehicle characteristics to SSMA. In considering it, The sensitivity and change of SSMA are verified by using numerical truss bridge and vehicle, and changing its characteristics.
