Dynamic Response of Vehicle-Bridge Coupled Oscillation Subjected to Velocity-varied Moving Loads
A mathematical model of vehicle-bridge coupled oscillations for a simple-supported bridge beam subjected to speed-varied moving loads was established according to TFDVM and model superposition method.This model can consider the pitching and vertical movements of a vehicle.By contrast to a vehicle-bridge oscillation coupled model based on one-freedom-degree Mass-Spring-Mass vehicle model (OFDMSMVD), the mathematical model of vehicle-bridge coupled vibrations based on TFDVM can more accurately reflect the dynamic behaviors of vehicle-bridge coupled vibrations.The maximum middle-span deflections of bridges under speed-varied cases are not linearly proportional to the entrance speeds of moving loads, and they happen at a number of entrance speed points of moving loads.The influence of acceleration and deceleration of moving loads on the dynamic deflections of bridges is dependent on the entrance speeds of moving loads.
Vehicle-bridge coupled vibration model Two-freedom-degree vehicle model (TFDVM) Euler-Bernoulli beam Velocity-varied moving load Dynamic response
Fuliang Mei Guiling Li
Institute of Civil & Engineering,Jiaxing University,Jiaxing,Zhejiang,314001,China
国际会议
上海
英文
1555-1560
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）