TY - GEN
T1 - Distributed strain measurements in a steel-concrete composite floor beam under multi-point loading at ambient temperature
AU - Klegseth, M.
AU - Bao, Y.
AU - Fan, L.
AU - Chen, G.
N1 - Publisher Copyright:
Copyright © SHMII 2019. All rights reserved.
PY - 2019
Y1 - 2019
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:85091653973
T3 - 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure: Transferring Research into Practice, SHMII 2019 - Conference Proceedings
SP - 1405
EP - 1410
BT - 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure
A2 - Chen, Genda
A2 - Alampalli, Sreenivas
T2 - 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure: Transferring Research into Practice, SHMII 2019
Y2 - 4 August 2019 through 7 August 2019
ER -