第５部門③

[2E11-15-01] nfluence of bridge-train interaction on bridge dynamic response under train passage

*Haruyuki Kitagawa¹, Munemasa Tokunaga¹, Manabu Ikeda¹ (1. Railway Technical Research Institute)

Keywords:Railway bridge, High-speed rail, Dynamic interaction analysis , Steel/composite bridge, resonance

Passage of train induces the dynamic response of bridge which depends on interactions between railway vehicles and bridges. This study investigated vehicle/bridge interaction on the dynamic response of steel and composite bridge structures with small masses. Numerical simulation found out that the dominant frequency at bridge resonance due to train passage decreases with the decrease of bridge/train mass ratio, and the magnitude of the dynamic response at resonance decreases with the increase of bridge span and with the decrease of the mass ratio.