DESIGN AND ANALYSIS OF LABORATORIAL HEALTH MONITORING MODEL OF LONG-SPAN CABLE-STAYED BRIDGES

摘要：

A laboratorial model for Structure Health Monitoring (SHM) investigation based on Shandong Binzhou Yellow River Highway Bridge was established. The health monitoring system of laboratorial bridge model includes four components, which are small-scale bridge model, loading system, sensors system and data acquisition and analysis system. Effective stiffness criterion was utilized in the laboratorial bridge model design. To verify the design of laboratorial bridge model Finite Elements (FE) model was built with ANSYS program. The modal similitude relationship of laboratorial bridge model with various proportion of attached weight wasdeduced. Analysis results indicated that it is reasonable to use 10％ to 50％ of theoretical attached weight in model experiments. Two vibration exciters were attached to the laboratorial bridge deck as the loading system. Bare fiber grating sensors were stuck to every cable of laboratorial bridge model, in order to adjust cable force and monitor the variation of cable force during the experiment. And force balance accelerometers were utilized to obtain the dynamic performance of laboratorial bridge model. The experiment results indicate that the laboratorial bridge with such a large size was useful for SHM investigation.

关键词： cable stayed bridge health monitoring model model similitude design FE model analysis

作者: Ou Yang Linren. Zhou Jinping Ou

作者单位: School of Civil Engineering,Harbin Institute of Technology,China School of Civil and Hydraul Engineering,Dalian University of Technology,China School of Civil Engineering,Harbin Institute of Technology,China;School of Civil and Hydraul Enginee

会议类型: 国际会议

会议名称: 第六届国际振动工程会议(The 6th International Conference on Vibration Engineering)(ICVE’ 2008)

会议地点: 大连

会议语种:英文

在线出版日期: 2008-06-04（万方平台首次上网日期，不代表论文的发表时间）