摘要
介绍润扬大桥结构健康监测系统中的GPS子系统,对系统采集的大量数据进行了分析,研究了悬索桥在台风、温度、特殊车辆荷载作用下位移变化情况。研究结果表明:台风作用下桥面横向和竖向位移以跨中最大;温度对竖向以及顺桥向的位移有较大影响;正常运营状态下以及重车过桥时,桥面变形远小于设计荷载作用下的变形,结构具有较大的安全储备。
This paper introduces the subsystem, the Global Positioning System （GPS）, of the structural health monitoring system of Runyang Bridge, analyzes the great amount of data acquired by the subsystem and makes a study of the displacement changes of the suspension bridge of the Bridge under the action of typhoon, temperatures and special vehicle loads. The results of the study show that under the action of typhoon, either the lateral or vertical displacement of bridge deck at midspan is maximum, the temperatures have significant effect on the displacement in the vertical and along bridge deck directions. Under the normal operation condition and at the time the heavy-duty vehicle travels through the bridge, the deformation of the bridge deck is far less than that under the action of the design load and the structure of the bridge has considerably great safety reservation.
出处
《世界桥梁》
北大核心
2008年第1期53-56,共4页
World Bridges
基金
国家高技术研究发展计划(863计划)(2006AA04Z416)
国家杰出青年基金(50725828)
关键词
悬索桥
结构健康监测
GPS系统
suspension bridge structural health monitoring
global positioning system
