SUSTAINABLE DEVELOPMENT OF URBAN ENVIRONMENT AND BUILDING MATERIAL, PTS 1-4
|
2012年
/
374-377卷
关键词:
extradosed bridge;
microwave Interferometer;
health monitoring;
D O I:
10.4028/www.scientific.net/AMR.374-377.2426
中图分类号:
TU [建筑科学];
学科分类号:
0813 ;
摘要:
The microwave interferometer used in the present study is capable of multiple-point displacement measurements. In this paper, a general review of the principle and capacity of such an instrument is given. The vertical displacements of the Ai-Lan bridge corresponding to ambient vibration due to traffic loads are remotely monitored. Several modal shapes of the whole bridge are precisely identified by linking the mode shapes of seven sequential measurements.