【摘要】 在建立漂浮型铁路斜拉桥主梁纵向列车制动响应模态受控方程的基础上,同时考虑到大型桥梁结构参数的不确定性会直接影响到主动控制效果的稳定,推导出当桥梁结构模型频率发生变化时桥梁结构的鲁棒控制方程,并以天兴洲公路铁路两用斜拉桥为工程背景,对其主梁纵向列车制动响应的鲁棒控制进行了仿真分析,结果表明:对于具有不确定参数的桥梁结构,采用鲁棒控制方式抑制主梁纵向列车制动振动响应的效果明显优于主动控制方式.更多还原

【Abstract】 Robust control of the longitudinal vibration response to train brake in the deck of floating-type railway cable-stayed bridge was investigated.Active control effects due to the uncertainties of parameters in long span bridge structures were consisted.From the established motion equations of modal controlled bridge,the robust controlled equations were derived based on frequency uncertainties.Taken Tianxingzhou Yangtze River Combined Highway and Railway Cable-Stayed Bridge as an example,the robust control of the longitudinal vibration responses of the deck was simulated.Simulating results show that the active robust control is more effective and efficient than the active control by the active algorithm for the bridge with parameter uncertainties.更多还原