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Short-Term, Long-Term, and Vibration Performance of TCC Floors Using Mass-Timber Panels.

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Title: Short-Term, Long-Term, and Vibration Performance of TCC Floors Using Mass-Timber Panels.
Authors: Tannert, Thomas1 (AUTHOR) thomas.tannert@unbc.ca, Gerber, Adam2 (AUTHOR), Salenikovich, Alexander3 (AUTHOR)
Source: Journal of Structural Engineering. Jun2024, Vol. 150 Issue 6, p1-17. 17p.
Subjects: Wooden beams, Vibration tests, Failure mode & effects analysis, Creep (Materials), Concrete panels, Concrete slabs, Adhesives, Lumber
Abstract: The increasing availability of mass timber panels has expanded the possibilities for using timber-concrete-composite (TCC) flat floors beyond the traditional TCC T-beams. While TCC floors often easily satisfy ultimate limit state requirements, their stiffness, vibration characteristics, and long-term performance are critical design considerations. This research aimed to validate the bending, vibration, and long-term performance for nine different TCC floor systems through full-size tests with a span of 5.8 m. The tested floor systems used laminated-veneer-lumber, laminated-strand lumber, and cross-laminated-timber (CLT) panels connected to a concrete slab with and without an interlayer. Three types of shear connections were employed: self-tapping screws; glued-in steel mesh; and a combination of STS and adhesive bond. First, the shear connection properties were determined via 54 small-scale push-out tests. Then, 18 floors were tested in bending and vibration shortly after fabrication, and an additional nine floors were subjected to service loading for 32 months under variable climatic conditions, after which they were subjected to bending and vibration tests. The results confirmed that the calculations based on the γ -method accurately predict the stiffness, natural frequency, and governing failure modes of TCC floors. The long-term exposure to service loading had minimal effect (within 10%) on resistance, stiffness, and natural frequency of TCC floors, except for the TCC using CLT, which showed the highest creep deflection and stiffness reduction among the tested configurations. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Structural Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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  Data: Short-Term, Long-Term, and Vibration Performance of TCC Floors Using Mass-Timber Panels.
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  Data: <searchLink fieldCode="AR" term="%22Tannert%2C+Thomas%22">Tannert, Thomas</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> thomas.tannert@unbc.ca</i><br /><searchLink fieldCode="AR" term="%22Gerber%2C+Adam%22">Gerber, Adam</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Salenikovich%2C+Alexander%22">Salenikovich, Alexander</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Structural+Engineering%22">Journal of Structural Engineering</searchLink>. Jun2024, Vol. 150 Issue 6, p1-17. 17p.
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  Data: <searchLink fieldCode="DE" term="%22Wooden+beams%22">Wooden beams</searchLink><br /><searchLink fieldCode="DE" term="%22Vibration+tests%22">Vibration tests</searchLink><br /><searchLink fieldCode="DE" term="%22Failure+mode+%26+effects+analysis%22">Failure mode & effects analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Creep+%28Materials%29%22">Creep (Materials)</searchLink><br /><searchLink fieldCode="DE" term="%22Concrete+panels%22">Concrete panels</searchLink><br /><searchLink fieldCode="DE" term="%22Concrete+slabs%22">Concrete slabs</searchLink><br /><searchLink fieldCode="DE" term="%22Adhesives%22">Adhesives</searchLink><br /><searchLink fieldCode="DE" term="%22Lumber%22">Lumber</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: The increasing availability of mass timber panels has expanded the possibilities for using timber-concrete-composite (TCC) flat floors beyond the traditional TCC T-beams. While TCC floors often easily satisfy ultimate limit state requirements, their stiffness, vibration characteristics, and long-term performance are critical design considerations. This research aimed to validate the bending, vibration, and long-term performance for nine different TCC floor systems through full-size tests with a span of 5.8 m. The tested floor systems used laminated-veneer-lumber, laminated-strand lumber, and cross-laminated-timber (CLT) panels connected to a concrete slab with and without an interlayer. Three types of shear connections were employed: self-tapping screws; glued-in steel mesh; and a combination of STS and adhesive bond. First, the shear connection properties were determined via 54 small-scale push-out tests. Then, 18 floors were tested in bending and vibration shortly after fabrication, and an additional nine floors were subjected to service loading for 32 months under variable climatic conditions, after which they were subjected to bending and vibration tests. The results confirmed that the calculations based on the γ -method accurately predict the stiffness, natural frequency, and governing failure modes of TCC floors. The long-term exposure to service loading had minimal effect (within 10%) on resistance, stiffness, and natural frequency of TCC floors, except for the TCC using CLT, which showed the highest creep deflection and stiffness reduction among the tested configurations. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Structural Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1061/JSENDH.STENG-12831
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 17
        StartPage: 1
    Subjects:
      – SubjectFull: Wooden beams
        Type: general
      – SubjectFull: Vibration tests
        Type: general
      – SubjectFull: Failure mode & effects analysis
        Type: general
      – SubjectFull: Creep (Materials)
        Type: general
      – SubjectFull: Concrete panels
        Type: general
      – SubjectFull: Concrete slabs
        Type: general
      – SubjectFull: Adhesives
        Type: general
      – SubjectFull: Lumber
        Type: general
    Titles:
      – TitleFull: Short-Term, Long-Term, and Vibration Performance of TCC Floors Using Mass-Timber Panels.
        Type: main
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          Name:
            NameFull: Tannert, Thomas
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            NameFull: Gerber, Adam
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            NameFull: Salenikovich, Alexander
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            – D: 01
              M: 06
              Text: Jun2024
              Type: published
              Y: 2024
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              Value: 150
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