Experimental study on vibration serviceability of cold-formed thin-walled steel floor

Bin Chen, Liang Cao, Faming Lu, Y. Frank Chen

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

In this study, on-site testing was carried out to investigate the vibration performance of a cold-formed thin-walled steel floor system. Ambient vibration, walking excitation (single and double persons), and impulsive excitation (heel-drop and jumping) were considered to capture the primary vibration parameters (natural frequencies, damping ratios, and mode shapes) and vertical acceleration response. Meanwhile, to discuss the influence of cement fiberboard on structural vibration, the primary vibration parameters were compared between the systems with and without the installation of cement fiberboard. Based on the experimental analysis, the cold-formed thin-walled steel floor possesses high frequency (> 10 Hz) and damping (> 2%); the installed cement fiberboard mainly increases the mass of floor system without effectively increasing the floor stiffness and may reduce the effects of primary vibration parameters on acceleration response; and the human-structure interaction should be considered when analyzing the vibration serviceability. The comparison of the experimental results with those in the AISC Design Guide indicates that the cold-formed thin-walled steel floor exhibits acceptable vibration serviceability. A crest factor βrp (ratio of peak to root-mean-square accelerations) is proposed to determine the root-mean-square acceleration for convenience.

Original languageEnglish (US)
Pages (from-to)577-589
Number of pages13
JournalSteel and Composite Structures
Volume46
Issue number4
DOIs
StatePublished - Feb 25 2023

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Metals and Alloys

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