Determination of the natural frequencies of a prestressed cable RC truss floor system

Jiang Li, Ruizhi Zhang, Jiepeng Liu, Liang Cao, Yohchia F. Chen

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The finite element method (FEM) and the analytical formula were used to study the vertical vibration of a prestressed cable RC truss (PCT) floor system. Three element types were compared for estimating the natural frequencies of this floor system. Extensive sensitivity studies using ABAQUS were conducted considering: (a) live load; (b) the number of web members; (c) opening ratio; (d) span; (e) rise-span ratio; (f) span to spacing ratio. Detailed derivation using the energy method for the natural frequencies of an orthotropic floor with four built-in edges is described. The unified formula for the PCT floor system was then developed for the first time based on the orthotropic plate theory to calculate the natural frequencies. The results obtained by the formula were compared with those from the field test and FEM. The comparison shows that the results are generally in a good agreement, indicating that the derived formula for natural frequencies is reasonably accurate and suitable for the vibrational analysis and design of the PCT floor system.

Original languageEnglish (US)
Pages (from-to)582-590
Number of pages9
JournalMeasurement: Journal of the International Measurement Confederation
Volume122
DOIs
StatePublished - Jul 1 2018

Fingerprint

cables
resonant frequencies
Natural frequencies
Cables
finite element method
orthotropic plates
Orthotropic plates
Finite element method
plate theory
energy methods
field tests
ABAQUS
estimating
derivation
spacing
vibration
sensitivity

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Electrical and Electronic Engineering

Cite this

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abstract = "The finite element method (FEM) and the analytical formula were used to study the vertical vibration of a prestressed cable RC truss (PCT) floor system. Three element types were compared for estimating the natural frequencies of this floor system. Extensive sensitivity studies using ABAQUS were conducted considering: (a) live load; (b) the number of web members; (c) opening ratio; (d) span; (e) rise-span ratio; (f) span to spacing ratio. Detailed derivation using the energy method for the natural frequencies of an orthotropic floor with four built-in edges is described. The unified formula for the PCT floor system was then developed for the first time based on the orthotropic plate theory to calculate the natural frequencies. The results obtained by the formula were compared with those from the field test and FEM. The comparison shows that the results are generally in a good agreement, indicating that the derived formula for natural frequencies is reasonably accurate and suitable for the vibrational analysis and design of the PCT floor system.",
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Determination of the natural frequencies of a prestressed cable RC truss floor system. / Li, Jiang; Zhang, Ruizhi; Liu, Jiepeng; Cao, Liang; Chen, Yohchia F.

In: Measurement: Journal of the International Measurement Confederation, Vol. 122, 01.07.2018, p. 582-590.

Research output: Contribution to journalArticle

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AU - Li, Jiang

AU - Zhang, Ruizhi

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AU - Cao, Liang

AU - Chen, Yohchia F.

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