0

Full Content is available to subscribers

Subscribe/Learn More  >

Cost-Effective Monitoring of Railroad Bridge Performance

[+] Author Affiliations
Bideng Liu

Institute of Disaster Prevention, Sanhe, China

Ali I. Ozdagli, Fernando Moreu

University of New Mexico, Albuquerque, NM

Paper No. SMASIS2017-3981, pp. V002T05A012; 7 pages
doi:10.1115/SMASIS2017-3981
From:
  • ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
  • Volume 2: Modeling, Simulation and Control of Adaptive Systems; Integrated System Design and Implementation; Structural Health Monitoring
  • Snowbird, Utah, USA, September 18–20, 2017
  • Conference Sponsors: Aerospace Division
  • ISBN: 978-0-7918-5826-4
  • Copyright © 2017 by ASME

abstract

Railroads carry 40% of the U.S.’ freight tonnage. Railroad bridges are the most critical component of this network. Measuring transverse displacement of railroad bridges under train-crossing load is essential for the safe and cost-effective operation of railroad network. However, bridge displacement is difficult to collect in the field with traditional sensors due to the lack of fixed reference frame. Although reference-free sensors provide flexibility overcoming the aforementioned challenge, they often fail to capture pseudo-static components observed in timber bridges. This study proposes a novel reference-free sensing system to measure the total displacements of railroad bridges under train-crossing loads. A novel passive-servo electro-magnetic-induction (PSEMI) sensing technology provides accurate direct reference-free dynamic displacement measurement. Furthermore, researchers utilize two reference-free accelerometers to record inclination measurement and transform to pseudo-static displacement. Total bridge displacement is obtained by adding dynamic and pseudo-static responses together. Shake table experiments employing a bridge pier model excited by bridge displacements measured in the field has validated the effectiveness and accuracy of the novel sensing system.

Copyright © 2017 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In