摘要
通过利用GPS技术对广州虎门悬索桥进行连续实时监测 ,现场测试了大桥的固有模态。介绍了所用的测试方法以及大桥固有模态的识别过程 ,并建立了三维空间有限元进行动力分析。通过实验和理论的相互比较 ,得出大桥的自振动力特性 ,同时也验证了大桥的抗震、抗风特征参数 。
In this paper,the natural mode of the Humen suspension bridge is field obtained with a continuous real time GPS monitoring system.Some testing ways and means are used to identify the natural mode;the ambient vibration approach is adopted for the dynamic measurement.At the same time,the theoretic mode is got from the dynamic analysis ,it is based on the 3?D finite element method .By comparing these results,the dynamic character of the bridge is obtained.Therefore,the natural parameters of wind resistance and shock proof of the bridge are verified .It is provided a basis for safety on line monitoring the long span bridge.
出处
《土木工程学报》
EI
CSCD
北大核心
2002年第1期25-37,34,共14页
China Civil Engineering Journal
基金
国家自然科学基金 (49871 0 65)
高校博士学科点专项基金(980 0 0 32 5)资助项目
关键词
悬索桥
固有模态
模态分析
实时监测
广州市
suspension bridge,natural mode,modal analysis,real time monitoring
