漂浮型斜拉桥主梁列车制动响应的鲁棒控制  

Robust control of the response to train brake in the deck of floating-type cable-stayed bridges

作　　者：刘嘉[1] 瞿伟廉[1] 涂建维[1] 

机构地区：[1]武汉理工大学道路桥梁与结构工程湖北省重点实验室,湖北武汉430070

出　　处：《华中科技大学学报（自然科学版）》2009年第11期115-118,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金重大国际合作研究项目(50520130296);国家自然科学基金面上项目(50708086)

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.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.

关 键 词：斜拉桥 列车制动 主动控制 鲁棒控制 仿真分析 

分 类 号：P315.9[天文地球—地震学] TU311[天文地球—固体地球物理学]