Influence of Temperature on the Natural Vibration Characteristics of Simply Supported Reinforced Concrete Beam

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dc.contributor.authorCai, Yanxiaen
dc.contributor.authorZhang, Kaien
dc.contributor.authorYe, Zhoujingen
dc.contributor.authorLiu, Changen
dc.contributor.authorLu, Kaijien
dc.contributor.authorWang, Linbingen
dc.contributor.departmentCivil and Environmental Engineeringen
dc.date.accessioned2021-06-24T15:00:24Zen
dc.date.available2021-06-24T15:00:24Zen
dc.date.issued2021-06-21en
dc.date.updated2021-06-24T14:12:06Zen
dc.description.abstractNatural vibration characteristics serve as one of the crucial references for bridge monitoring. However, temperature-induced changes in the natural vibration characteristics of bridge structures may exceed the impact of structural damage, thus causing some interference in damage identification. This study analyzed the influence of temperature on the natural vibration characteristics of simply supported beams, which is the most widely used bridge structure. The theoretical formula for the variation of the natural frequency of simply supported beams with temperature was proposed. The elastic modulus of simply supported beams in the range of −40 °C to 60 °C was acquired by means of the falling ball test and the theoretical formula and was compared with the elastic modulus obtained by the three-point bending test at room temperature (20 °C). In addition, the Midas/Civil finite-element simulation was carried out for the natural frequency of simply supported beams at different temperatures. The results showed that temperature was the main factor causing the variation of the natural frequency of simply supported beams. The linear negative correlation between the natural frequency of simply supported beams and their temperature were observed. The natural frequency of simply supported beams decreased by 0.148% for every 1 °C increase. This research contributed to the further understanding of the natural vibration characteristics of simply supported beams under the influence of temperature so as to provide references for natural frequency monitoring and damage identification of beam bridges.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationCai, Y.; Zhang, K.; Ye, Z.; Liu, C.; Lu, K.; Wang, L. Influence of Temperature on the Natural Vibration Characteristics of Simply Supported Reinforced Concrete Beam. Sensors 2021, 21, 4242.en
dc.identifier.doihttps://doi.org/10.3390/s21124242en
dc.identifier.urihttp://hdl.handle.net/10919/103992en
dc.language.isoenen
dc.publisherMDPIen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectTemperatureen
dc.subjectnatural vibration characteristicsen
dc.subjectsimply supported beamen
dc.subjectbeam bridgeen
dc.subjectMidas/Civilen
dc.titleInfluence of Temperature on the Natural Vibration Characteristics of Simply Supported Reinforced Concrete Beamen
dc.title.serialSensorsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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