天兴洲公铁两用斜拉桥主梁纵向地震、列车制动及行车移动荷载响应的混合控制  

Hybrid Control of Longitudinal Vibration Responses in Deck of Tianxingzhou Rail-cum-Road Cable-Stayed Bridge Caused by Earthquake,Train Braking and Vehicle Moving Loads

作　　者：秦顺全[1] 瞿伟廉[2] 

机构地区：[1]中铁大桥局集团有限公司,湖北武汉430050 [2]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：《桥梁建设》2008年第4期1-4,9,共5页Bridge Construction

摘　　要：针对天兴洲公铁两用斜拉桥提出"MR阻尼器+液体粘滞阻尼器"的混合控制方案,并建立了对该桥主梁纵向地震、列车制动和行车移动荷载响应混合控制的基本方程、控制策略和仿真分析方法,分析结果表明采用该混合控制方案能有效地抑制大桥主梁纵向地震、列车制动及行车移动荷载的振动响应。In the light of the situations of Tianxingzhou Rail-cum-Road Cable-Stayed Bridge, this paper puts forward a hybrid control scheme of magneto-theological （MR） dampers plus fluid viscous dampers and specifically establishes the basic equations, control strategy and simulation analysis method for the control of the longitudinal vibration responses in deck of the Birdge caused by earthquake, train braking and vehicle moving loads. The results of analysis demon- strate that the utilization of the hybrid control scheme as put forward in the paper can effectively suppress the vibration responses due to the earthquake, train braking and vehicle moving loads.

关 键 词：铁路与公路两用桥 斜拉桥 地震 列车制动 MR阻尼器 振动控制 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]