大跨悬索桥风致振动行车舒适性研究  

STUDY ON AUTOMOBILE RIDE COMFORT FOR A LONG-SPAN SUSPENSION BRIDGE WITH WIND-INDUCED VIBRATION

作　　者：王飞[1] 戴萍[1] 胡亮[1] 甘文[1] 

机构地区：[1]华中科技大学土木工程与力学学院,武汉430074

出　　处：《建筑技术开发》2006年第3期1-4,19,共5页Building Technology Development

摘　　要：大跨悬索桥在风荷载作用下会产生比较激烈的振动，这些振动将导致桥上行车的舒适性问题，从而影响正常行车。在抖振时域分析的基础上，进行了风荷载作用下桥梁振动响应的频谱分析，给出了5种不同方法对桥梁的行车舒适性做了评价。并在借鉴IS02631国际新标准的基础上，提出汽车综合振动舒适度的概念。最后，以某特大悬索桥为例，用文中的方法对其进行了行车舒适性评价。给出的方法可用于舒适度的初步验算供设计人员参考。Extensive vibrations induced by wind force arise in the long-span bridge, which would greatly threaten the coziness of drivers in the cars so that affect the ordinary fide. Based on buffeting analysis in time~ domain, frequency spectrum analysis is carried out for vibration response of the bridge under wind force. Five methods are presented to evaluate automobile ride comfort of the bridge. In the meantime, based on drawing some experiences and lessons from the new international standard ISO2631, the concept of automobile comprehensive vibration comfortableness is promoted in this paper. Finally, one super suspension bridge is taken as an example, and the methods mentioned in this thesis are applied to evaluate automobile ride comfort of this suspension bridge. The primary check method for human vibration comfort can be referred by designers.

关 键 词：悬索桥 抖振 时域分析 频谱分析 行车舒适性 

分 类 号：TU379.72[建筑科学—结构工程] TU311.2