Distributed strain measurements in a steel-concrete composite floor beam under multi-point loading at ambient temperature

M. Klegseth, Y. Bao, L. Fan, G. Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A 12.8 m-long composite floor beam consisting of a steel reinforced concrete slab with profiled metal decking supported by a W18×35 steel beam was tested under multi-point bending load at ambient temperature. Material strain and temperature were measured using fiber optic sensors. Measurements were taken along more than 150 m of fiber optic cables using Pre-Pump Pulse Brillouin Optical Time Domain Analysis (PPP-BOTDA) and Optical Frequency Domain Reflectometry (OFDR). Along the beam centerline, three strain and two temperature fiber loops were placed to characterize the strain and temperature distribution along and through the depth of the concrete slab. The neutral axis depth was evaluated using the measured data and compared with theoretic predictions for a fully-composite beam and a non-composite beam. The theoretic prediction was based on an elastic steel and elastic cracked concrete section and was found in general agreement with the test data.

Original languageEnglish
Title of host publication9th International Conference on Structural Health Monitoring of Intelligent Infrastructure
Subtitle of host publicationTransferring Research into Practice, SHMII 2019 - Conference Proceedings
EditorsGenda Chen, Sreenivas Alampalli
Pages1405-1410
Number of pages6
ISBN (Electronic)9780000000002
StatePublished - 2019
Event9th International Conference on Structural Health Monitoring of Intelligent Infrastructure: Transferring Research into Practice, SHMII 2019 - St. Louis, United States
Duration: 4 Aug 20197 Aug 2019

Publication series

Name9th International Conference on Structural Health Monitoring of Intelligent Infrastructure: Transferring Research into Practice, SHMII 2019 - Conference Proceedings
Volume2

Conference

Conference9th International Conference on Structural Health Monitoring of Intelligent Infrastructure: Transferring Research into Practice, SHMII 2019
Country/TerritoryUnited States
CitySt. Louis
Period4/08/197/08/19

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