1. 长沙理工大学 土木与建筑学院 湖南 长沙 410004;2. Louisiana State University, School of Civil and Environment Engineering, L A, Baton Rouge USA
Lateral Vibration of High-pier Bridge under Moving Vehicular Loads
Xinfeng Yin1 , Yang Liu1, C.S. Cai1,2
1School of Civil Engineering, Changsha University of Science and Technology, 410004, Changsha, Hunan, China2Dept. of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, USA
Abstract：This paper is mainly focused on establishing a new model considering the bridge’s lateral vibration induced by moving vehicles. The vehicle tire is modeled as a three-dimensional elementary spring model, and the contact patch is assumed to be a rectangle. Three significant factors that affect the lateral forces, including the slip angle, camber angle, and vehicle tires moving with “S” shape, are introduced in studying the effect of the lateral forces on the lateral vibration of bridges. The bridge-vehicle coupled equations are established by combining the equations of motion of both the bridge and vehicle using the displacement relationship and interaction force relationship at the patch contact. The accuracy and efficiency of the present method are verified by comparing the simulations and the field test results of a typical high-pier bridge, showing that the proposed method can rationally simulate the lateral vibration of the bridge under moving vehicular loads.
2013, Vol. 32 
