Design and Manufacture of Scale-Model System of Highway Bridge Subjected to a Running Vehicle

According to vibration characteristics of highway bridge-vehicle coupling, taking a simple supported beam bridge as an example, the scale model test system of vehicle-bridge coupling vibration has been designed and manufactured, including model testing bridge, testing vehicle, traction, braking, limiting device and a data collecting system. Comparison of measured value and theoretical value, the dynamic characteristics of model bridge and testing car have tested efficiency of design and manufacture about model bridge and testing car; Comparison of scale model test results with numerical results of spring mass vibration system and simulation results of LS-DYNA, which verifies the similitude laws of bridge-vehicle interaction model text and corrects the reliability of measurement result. The results show the feasibility of model test equipment and the validity of the test results.