Vehicle Scanning Method for Bridges Enhanced by Dual Amplifiers

Dual-function amplifiers are proposed for the first time herein enhancing capability of a scanning test vehicle bridges. To start, closed-form solutions derived dynamic responses amplifier-vehicle-bridge system with moving vehicle. Then, amplification factors amplifier and presented assessing bridge/vehicle vehicle/amplifier transmissibility. It was known that spectrum may be hindered extracting bridge frequencies because frequency rough pavement. Two differentially tuned called on to tackle problem: one (i.e., damper) is suppress effect vehicle’s frequency, acting like mass damper (TMD), other amplifier) enlarge amplitude concern. Based parametric study, it concluded (1) performs better than in by increasing their visibility spectrum; (2) can suppressed tuning such functions TMD vehicle; (3) any few frequencies, latter well detected even