Effect of Local Deformation of Deck System and Beam End of Jinan Yellow River Bridge on Train-bridge Dynamic Performance

摘要

The running safety and the ride comfort of train decrease when the train passing the weak part where the stiffness of bridge has sudden change. Combined with the comprehensive test on the Beijing-Shanghai high-speed railway and the correlative simulation of train-bridge interaction vibration, a large span bridge with quadruple-track named the Jinan Yellow River Bridge is investigated in this paper. Considering the large width of deck and the special structure with two main trusses, a detailed finite element model of the bridge is established. The stiffness differences of deck system and local vibration at beam end are researched and their influences on the dynamic performances of train and bridge are discussed.