摘要
以简支桥梁为例,建立了车辆过桥时的动力学模型,并引入相关的行人舒适性评价方法,给出了相关的评价结果.狄克曼指标K的评价结果表明,行人的舒适度随着距离跨中的远近而显著变化,在跨中附近舒适度最差.振动感觉指标VG的评价结果表明,行人的舒适度随着过往车辆车速的增大而明显降低.综合狄克曼指标K和振动感觉指标VG的优点,可以对桥上行人的舒适度进行更加全面的评价.
Taking the simply supported bridges for example,the dynamic response calculation model of vehicle moving over bridge is established,and related computer calculation program is prepared.According to Diekmann Index K,the pedestrian comfort change greatly with the various distances to the span center,nearer to the center,then worse comfort degree.The index of vibration VG shows that the comfort degree will lower down with the speed up vehicles.Therefore the two indexes should be applied together to give the over well evaluation.
出处
《天中学刊》
2010年第2期19-21,84,共4页
Journal of Tianzhong
关键词
简支桥梁
舒适度评价
桥梁振动
动力反应
simply supported bridge
comfort evaluation
bridge vibration
dynamic response
