期刊
ENGINEERING STRUCTURES
卷 27, 期 13, 页码 1865-1878出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.engstruct.2005.06.016
关键词
bridge; fundamental frequency; health monitoring; scanning; vehicle
A two-wheel cart towed by a light truck is used to scan the fundamental frequency of vibration of a sustaining bridge. The truck excites the bridge through its movement, thereby serving as an exciter to the bridge. The bridge vibration is received or scanned by an accelerometer installed in the cart. The bridge that is set into motion will affect the dynamic response of the towed cart, which in turn serves as a receiver or scanner of the bridge's dynamic properties, especially the frequencies of vibration. The response recorded using an accelerometer installed in the cart is processed by a fast Fourier transform (FFT) to extract the source frequencies of the cart, which are exactly the frequencies of vibration of the bridge. The feasibility of scanning the fundamental frequency of the bridge using the towed cart is confirmed by field tests. The methodology developed for the first time herein is simple and efficient, and can be applied to a wide range of bridge problems, if only the fundamental frequency is of interest. (c) 2005 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据