A design-oriented method for response prediction of light-weight timber floors under bouncing excitation. Issue 16 (December 2022)

• Record Type: Journal Article
• Authors: Wang, Haoqi; Zeng, Dongjun; Cheng, Yao; Wang, Pengcheng; Chen, Jun
• Other Names: Ji Xiaodong guest-editor.; Li Yongle guest-editor.; Xia Yong guest-editor.
• Is Part Of: Advances in structural engineering. Volume 25:Issue 16(2022)
• Page Start: 3464
• Page End: 3474
• Publication Date: 2022-12
• Subjects: timber floors -- vibration serviceability -- response spectrum -- design-oriented -- bouncing excitation; Structural engineering -- Periodicals; Construction, Technique de la; Structural engineering; Periodicals; 624.1
• DOI: 10.1177/13694332221133598
• Languages: English
• ISSNs: 1369-4332

Abstract

Owing to the light weight and high fundamental frequency, timber floors exhibit impulse-like responses under human-induced excitation, which is different with the resonance-like responses for heavy concrete structures. The vibration serviceability of timber floors thus needs to be considered in a different manner. Many design codes for timber structures have required that the static displacement or dynamic response under human excitation should be limited within a threshold for the purpose of serviceability, while failing to provide appropriate method for predicting structural responses considering various affecting factors. Inspired by the idea of response spectrum, this paper proposed a design-oriented method for the peak acceleration prediction of high-frequency floors under human bouncing excitation. The prediction can be obtained for any desired confidence level. Statistical analysis shows that the acceleration responses are mostly dependent on structural fundamental frequency, structural damping ratio, and excitation frequency, which are considered in the proposed mathematical model. The application procedure and the experimental assessment of the proposed model are provided, showing the decent applicability of the proposed method.