Early assessment of the vibroacoustic performance of large lightweight buildings

TY - CHAP

T1 - Early assessment of the vibroacoustic performance of large lightweight buildings

AU - Andersen, Lars Vabbersgaard

AU - Mangliar, Laszlo

AU - Hudert, Markus Matthias

AU - Flodén, Ola

AU - Persson, P.

PY - 2023

Y1 - 2023

N2 - As part of the green transition, a current trend in the construction sector is to utilize more wood and lightweight composites, aiming at a reduction of the embodied energy in buildings. At the same time, with a focus on circularity and reuse, large-span structures are preferable, since they provide more flexibility for future uses of the building. The mix of large spans and lightweight structures pose a risk in terms of increased vibration levels. Hence, assessment of the vibroacoustic performance of a building is necessary in the early design stage to guide the designers towards useful solutions. This paper presents a computational framework for such assessment. While the framework is based on the combination of advanced digital tools for architectural design and rigorous finite-element modelling of the structure, a simple-to-use spreadsheet interface allows the non-experienced used to perform analysis. To provide an example, a small building made of cross-laminated timber has been analysed regarding its steady-state response to time-harmonic excitation on a floor. The paper demonstrates how representative acceleration levels can be achieved at a low computational cost.

AB - As part of the green transition, a current trend in the construction sector is to utilize more wood and lightweight composites, aiming at a reduction of the embodied energy in buildings. At the same time, with a focus on circularity and reuse, large-span structures are preferable, since they provide more flexibility for future uses of the building. The mix of large spans and lightweight structures pose a risk in terms of increased vibration levels. Hence, assessment of the vibroacoustic performance of a building is necessary in the early design stage to guide the designers towards useful solutions. This paper presents a computational framework for such assessment. While the framework is based on the combination of advanced digital tools for architectural design and rigorous finite-element modelling of the structure, a simple-to-use spreadsheet interface allows the non-experienced used to perform analysis. To provide an example, a small building made of cross-laminated timber has been analysed regarding its steady-state response to time-harmonic excitation on a floor. The paper demonstrates how representative acceleration levels can be achieved at a low computational cost.

UR - http://www.scopus.com/inward/record.url?scp=85145587542&partnerID=8YFLogxK

U2 - 10.1201/9781003348443-8

DO - 10.1201/9781003348443-8

M3 - Book chapter

VL - 1

SP - 49

EP - 55

BT - Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems - Proceedings of the 8th International Conference on Structural Engineering, Mechanics and Computation, 2022

A2 - Zingoni, Alphose

PB - CRC Press

CY - Abingdon

T2 - The Eighth International Conference on Structural Engineering, Mechanics and Computation

Y2 - 5 September 2022 through 7 September 2022

ER -