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Effect of Bearing Direction and Mounting Techniques on Cross-Laminated Timber Elements in the Field

Nilsson, Erik ; Ménard, Sylvain ; Bard Hagberg, Delphine LU and Hagberg, Klas LU (2022) 51st International Congress and Exposition on Noise Control Engineering, Internoise 2022
Abstract

Vibration reduction index (Kij ) measurements in the field have some challenges compared to laboratory measurements. Firstly, the measurement requires access to a construction site during the short time span when the cross-laminated timber (CLT) elements are apparent. Secondly, building contractors are often on a tight time schedule. Therefore, it is important to find a solution that minimizes the measurement time on site. Moreover, Kij measurements in the field include several types of junctions with different bearing directions which may be of importance. This paper aims to evaluate two different mounting techniques with accelerometers on CLT elements and to discuss how the bearing direction could affect the... (More)

Vibration reduction index (Kij ) measurements in the field have some challenges compared to laboratory measurements. Firstly, the measurement requires access to a construction site during the short time span when the cross-laminated timber (CLT) elements are apparent. Secondly, building contractors are often on a tight time schedule. Therefore, it is important to find a solution that minimizes the measurement time on site. Moreover, Kij measurements in the field include several types of junctions with different bearing directions which may be of importance. This paper aims to evaluate two different mounting techniques with accelerometers on CLT elements and to discuss how the bearing direction could affect the vibration level difference of junctions. Measurement data indicate few deviations between mounting techniques with bee wax or double-sided adhesive tape when accelerometers are attached to CLT elements. Furthermore, field measurements indicate that the vibration level will decrease with increased lamellas over the same CLT element. Double-sided adhesive tape is an adequate substitute for bee wax in the field for mounting accelerometers on CLT elements, with some limitations at high frequencies. Measurement data concludes that the bearing direction of CLT elements can influence the vibration reduction index of a junction.

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Please use this url to cite or link to this publication:
author
; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Bearing Direction, Cross-Laminated Timber, Mounting Technique, Vibration reduction index
host publication
Internoise 2022 - 51st International Congress and Exposition on Noise Control Engineering
publisher
The Institute of Noise Control Engineering of the USA, Inc.
conference name
51st International Congress and Exposition on Noise Control Engineering, Internoise 2022
conference location
Glasgow, United Kingdom
conference dates
2022-08-21 - 2022-08-24
external identifiers
  • scopus:85147451504
ISBN
9781906913427
language
English
LU publication?
yes
id
87e1620d-7b64-4f9e-9afd-2eb0332dbfd3
date added to LUP
2023-02-20 14:58:16
date last changed
2023-10-09 13:56:45
@inproceedings{87e1620d-7b64-4f9e-9afd-2eb0332dbfd3,
  abstract     = {{<p>Vibration reduction index (K<sub>ij</sub> ) measurements in the field have some challenges compared to laboratory measurements. Firstly, the measurement requires access to a construction site during the short time span when the cross-laminated timber (CLT) elements are apparent. Secondly, building contractors are often on a tight time schedule. Therefore, it is important to find a solution that minimizes the measurement time on site. Moreover, K<sub>ij</sub> measurements in the field include several types of junctions with different bearing directions which may be of importance. This paper aims to evaluate two different mounting techniques with accelerometers on CLT elements and to discuss how the bearing direction could affect the vibration level difference of junctions. Measurement data indicate few deviations between mounting techniques with bee wax or double-sided adhesive tape when accelerometers are attached to CLT elements. Furthermore, field measurements indicate that the vibration level will decrease with increased lamellas over the same CLT element. Double-sided adhesive tape is an adequate substitute for bee wax in the field for mounting accelerometers on CLT elements, with some limitations at high frequencies. Measurement data concludes that the bearing direction of CLT elements can influence the vibration reduction index of a junction.</p>}},
  author       = {{Nilsson, Erik and Ménard, Sylvain and Bard Hagberg, Delphine and Hagberg, Klas}},
  booktitle    = {{Internoise 2022 - 51st International Congress and Exposition on Noise Control Engineering}},
  isbn         = {{9781906913427}},
  keywords     = {{Bearing Direction; Cross-Laminated Timber; Mounting Technique; Vibration reduction index}},
  language     = {{eng}},
  publisher    = {{The Institute of Noise Control Engineering of the USA, Inc.}},
  title        = {{Effect of Bearing Direction and Mounting Techniques on Cross-Laminated Timber Elements in the Field}},
  year         = {{2022}},
}