Load Mode for Human-induced Vibration of Long-span Pedestrian Cable-stayed Bridge
With the rapid development of urban comprehensive transportation,the span of pedestrian bridges greatly increases,and a number of long-span pedestrian bridges are built.However,the comfort level of the long-span pedestrian bridge is faced with the outstanding problem of not enough pedestrians.The dynamic analysis model of the bridge is established on the long-span pedestrian cable-stayed bridge,and the validity of the model is verified.Based on the verified numerical model,the differences between the recommended load and the moving load are compared.In addition,the influence law of pedestrian load with different lengths and stride lengths on pedestrian cable-stayed bridge is analyzed.The results show that the difference between the recommended load and the moving load is reflected in the magnitude and distribution of the peak acceleration under pedestrian load with non-superior frequency.When the length of the crowd is 0.3 times of the main span,80%of the full load acceleration can be achieved.The value will be the best crowd length of the real bridge test,compared with the number of people recommended by European norms,the labor cost is reduced by 65.8%.
bridgescable stayed bridgespedestrian bridgesvibration loadstestingfinite element analysis
NETL
NSTL
万方数据
