Characterization of operational vibrations of highway bridges Via Lidar

Research output: Contribution to conferencePaperpeer-review

Abstract

During the examination of data obtained from scanning an operational steel girder bridge, local ripples were noted in horizontal elements that were expected to be planar in nature (such as girder flanges). It was hypothesized that these ripples are a result of the bridge vibrating under truck traffic. The objective of this paper is to examine this hypothesis through the use of data obtained from an operating highway bridge together with the use of numerical and physical models. After analyzing the data, by estimating the distance between the peak of these ripples (and translating this into time using the data acquisition metrics) the frequency of the vibrating object can be estimated. For the operating bridge and physical model employed in this research, the natural frequencies were estimated within 2% to 10% and 0,22% to 5%, respectively.

Original languageAmerican English
Pages412-417
Number of pages6
StatePublished - 2021
EventIABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs - Ghent, Virtual, Belgium
Duration: Sep 22 2021Sep 24 2021

Conference

ConferenceIABSE Congress, Ghent 2021: Structural Engineering for Future Societal Needs
Country/TerritoryBelgium
CityGhent, Virtual
Period9/22/219/24/21

ASJC Scopus subject areas

  • Management of Technology and Innovation
  • Renewable Energy, Sustainability and the Environment
  • Civil and Structural Engineering
  • Safety, Risk, Reliability and Quality

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