TY - JOUR
T1 - Experimental study on vibration serviceability of cold-formed thin-walled steel floor
AU - Chen, Bin
AU - Cao, Liang
AU - Lu, Faming
AU - Frank Chen, Y.
N1 - Funding Information:
The authors are grateful to the supports provided by the National Natural Science Foundation of China (Grant No. 52278175, 51908084), the Fundamental Research Funds for the Central Universities (Grant No. 531118010784), and Technical Research and Innovation Project of Chengdu Architectural Design & Research Institute Co., LTD.
Publisher Copyright:
Copyright © 2023 Techno-Press, Ltd.
PY - 2023/2/25
Y1 - 2023/2/25
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85161280686&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85161280686&partnerID=8YFLogxK
U2 - 10.12989/scs.2023.46.4.577
DO - 10.12989/scs.2023.46.4.577
M3 - Article
AN - SCOPUS:85161280686
SN - 1229-9367
VL - 46
SP - 577
EP - 589
JO - Steel and Composite Structures
JF - Steel and Composite Structures
IS - 4
ER -