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Lookup NU author(s): Dr Haoyu HuangORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
Timber, a viscoelastic material, undergoes deformation over time when exposed to sustained loads, a process known as creep. Its rising popularity as a construction material, especially for timber floors, is notable. However, the influence of creep on the dynamic characteristics of timber floors, such as their natural frequency and vibration response, is not well studied. This research focused on how long-term loading (creep) affects the vibration behaviours of a cross-laminated timber (CLT) floor. A full-scale CLT floor was constructed in a lab and subjected to long-term loading using sandbags. Over 896 days, the centroid point deflection and environmental conditions (temperature and relative humidity) were monitored. Human-induced vibration tests were carried out at the beginning, throughout, and at the end of this period. The vibration response, measured in terms of the Vibration Dose Value (VDV), was assessed at various stages of long-term loading. The findings showed a moderate positive correlation between the creep deflection and environmental conditions. The fundamental frequency slightly increased over time due to creep, and a general decrease in VDV was observed as the creep advanced.
Author(s): Zhang J, Huang H, Wang BJ
Publication type: Article
Publication status: Published
Journal: Engineering Structures
Year: 2024
Volume: 316
Issue: 1
Print publication date: 01/10/2024
Online publication date: 05/07/2024
Acceptance date: 01/07/2024
Date deposited: 06/07/2024
ISSN (print): 0141-0296
ISSN (electronic): 1873-7323
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.engstruct.2024.118562
DOI: 10.1016/j.engstruct.2024.118562
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