Design and validation of scale-model test system for highway beam bridge subjected to moving vehicle
1.School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, Jiangxi 330013, China； 2.School
of Transportation, Southeast University, Nanjing, Jiangsu 210096, China
Abstract：According to the similarity theories of structure dynamic model test and vibration particularity of highway bridge-vehicle coupling, the similarity laws of bridge-vehicle interaction system were deduced based on π theorem with dimension matrix analysis. For the simple beam bridge with span of 30 m and vehicle loading of 330 kN, the similarity constants of the scale-model system for highway bridge-vehicle interaction were calculated with geometry scale factor of 10. The bridge-vehicle interaction system of perspex model bridge, testing pony truck and appendages was established. The dynamic particularities of model bridge and testing pony truck were analyzed through testing and numerical analysis. The static and dynamic responses of model bridge were studied based on a moving vehicle running on the smooth deck along normal lane. The comparing of model bridge testing results with numerical results of practical bridge by MATLAB was used to verify the similitude laws of bridge-vehicle interaction model. The results show that the error of model bridge primary frequency is 0.01%, and the testing pony truck is 3%. The results illuminate the feasibility of model test equipment and the validity of test results.
桂水荣1,2, 陈水生1, 万水2. 公路梁桥车桥耦合振动模型试验设计及校验[J]. 江苏大学学报（自然科学版）, 2014, 35(4): 463-469.
Gui Shuirong1,2, Chen Shuisheng1, Wan Shui2. Design and validation of scale-model test system for highway beam bridge subjected to moving vehicle[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2014, 35(4): 463-469.
2014, Vol. 35 
