English  |  正體中文  |  简体中文  |  Items with full text/Total items : 52047/87178 (60%)
Visitors : 8709566      Online Users : 68
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/110295

    Title: Indirect frequency measurement of cable-stayed bridges in cross winds
    Other Titles: 英文
    Authors: 姚忠達
    Keywords: indirect measurement;VBI;wind engineering
    Date: 2017-05-10
    Issue Date: 2017-05-10 02:18:24 (UTC+8)
    Abstract: In conventional bridge health monitoring, a number of sensors are deployed on a bridge directly for detecting its various dynamic properties. This is so called “direct method”. But the drawbacks of the direct method are: laborious deployment of sensors, time-consuming, and not portable. Following the previous Yang’s works (2004) in indirect method by using a passing test vehicle as a message receiver of bridge response, this study regards cross winds as lateral excitational sources to detect the lateral bridge frequencies from the lateral response of the moving test vehicle. To account for the wind-vehicle-bridge interactions in performing dynamic analysis, an iteration-based 3D vehicle-bridge interaction (VBI) finite element method is developed. The whole wind/VBI system is decomposed into two subsystems: the wind-bridge subsystem and the wind-vehicle subsystem. Then the iterative scheme is carried out to compute the interaction response between the two subsystems independently and iterate for removing unbalance forces. The numerical results indicated that the present indirect bridge monitoring is a simple and feasible method to measure the lateral frequency of a long-span bridge in cross winds.
    Relation: Proceeding of FB-17
    Appears in Collections:[建築學系暨研究所] 會議論文

    Files in This Item:

    File Description SizeFormat
    Indirect frequency measurement of cable-stayed bridges in cross winds.pdf全文339KbAdobe PDF39View/Open

    All items in 機構典藏 are protected by copyright, with all rights reserved.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback