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Lateral stabilisation in multi-storey timber volume element buildings

Jönsson, Elin LU (2019) In TVSM-5000 VSMM01 20182
Department of Construction Sciences
Structural Mechanics
Abstract
The use of timber volume elements (TVEs) in residential multi-storey buildings is increasing in popularity. Manufacturing methods and building processes have been streamlined to improve product quality. However, further streamlining still remains concerning the efficiency of current calculation methods, as many developers still use simple hand calculations. The objective with this dissertation was to create a three-dimensional numerical calculation model of a TVE building system from a well-known TVE developer. The dissertation aimed mainly at providing further knowledge about lateral stabilisation for TVE systems, since this is one of the current challenges for the developer. The focus was on how connections within and between TVEs affect... (More)
The use of timber volume elements (TVEs) in residential multi-storey buildings is increasing in popularity. Manufacturing methods and building processes have been streamlined to improve product quality. However, further streamlining still remains concerning the efficiency of current calculation methods, as many developers still use simple hand calculations. The objective with this dissertation was to create a three-dimensional numerical calculation model of a TVE building system from a well-known TVE developer. The dissertation aimed mainly at providing further knowledge about lateral stabilisation for TVE systems, since this is one of the current challenges for the developer. The focus was on how connections within and between TVEs affect the overall stability of the structural system, and what advantages could be gained from using a three-dimensional numerical model compared to analytical methods.

Numerical models of TVEs were developed using the finite element method. Firstly, individual TVE models were assembled and stiffnesses gained from regarding three-dimensional effects were compared to those obtained from analytical methods. Secondly, the TVE models were assembled into the tallest and most slender configuration possible in regards to lateral stability. Assumptions made in previously performed analytical calculations were tested, as well as further three-dimensional effects from regarding the complete structural system.

The analysis of the individual TVEs resulted in a 30~\% stiffness increase compared to analytical methods, mainly from load-sharing between parallel shear walls through the roof. The assembled model of the building system resulted in transverse walls having a significant impact on load-sharing, as rotations and out-of-plane displacements in shear walls increased with increasing building height. Depending on wind load direction and model configuration, 17-40~\% of lateral loads were shared with the transverse walls. Overall, the numerical model provided sufficiently accurate depictions of connection force distributions. Thus, further experimental calibrations are required to take full advantage of the three-dimensional structural behaviour. (Less)
Popular Abstract (Swedish)
Det ökade användandet av träbaserade volymelement i flerfamiljshus kräver effektiva och detaljerade beräkningsmetoder. Numeriska modeller av volymelementen ger stora fördelar med avseende på analys av stabilitet mot vindlaster genom möjligheten att beakta hela den tredimensionella konstruktionens styvhet.
Please use this url to cite or link to this publication:
author
Jönsson, Elin LU
supervisor
organization
alternative title
Stabilisering av flerfamiljshus byggda av volymelement
course
VSMM01 20182
year
type
H3 - Professional qualifications (4 Years - )
subject
keywords
TVE, multi-storey building, timber volume element, lateral stability
publication/series
TVSM-5000
report number
TVSM-5231
ISSN
0281-6679
language
English
id
8973471
date added to LUP
2019-04-09 14:07:14
date last changed
2019-04-09 14:07:14
@misc{8973471,
  abstract     = {The use of timber volume elements (TVEs) in residential multi-storey buildings is increasing in popularity. Manufacturing methods and building processes have been streamlined to improve product quality. However, further streamlining still remains concerning the efficiency of current calculation methods, as many developers still use simple hand calculations. The objective with this dissertation was to create a three-dimensional numerical calculation model of a TVE building system from a well-known TVE developer. The dissertation aimed mainly at providing further knowledge about lateral stabilisation for TVE systems, since this is one of the current challenges for the developer. The focus was on how connections within and between TVEs affect the overall stability of the structural system, and what advantages could be gained from using a three-dimensional numerical model compared to analytical methods.

Numerical models of TVEs were developed using the finite element method. Firstly, individual TVE models were assembled and stiffnesses gained from regarding three-dimensional effects were compared to those obtained from analytical methods. Secondly, the TVE models were assembled into the tallest and most slender configuration possible in regards to lateral stability. Assumptions made in previously performed analytical calculations were tested, as well as further three-dimensional effects from regarding the complete structural system.

The analysis of the individual TVEs resulted in a 30~\% stiffness increase compared to analytical methods, mainly from load-sharing between parallel shear walls through the roof. The assembled model of the building system resulted in transverse walls having a significant impact on load-sharing, as rotations and out-of-plane displacements in shear walls increased with increasing building height. Depending on wind load direction and model configuration, 17-40~\% of lateral loads were shared with the transverse walls. Overall, the numerical model provided sufficiently accurate depictions of connection force distributions. Thus, further experimental calibrations are required to take full advantage of the three-dimensional structural behaviour.},
  author       = {Jönsson, Elin},
  issn         = {0281-6679},
  keyword      = {TVE,multi-storey building,timber volume element,lateral stability},
  language     = {eng},
  note         = {Student Paper},
  series       = {TVSM-5000},
  title        = {Lateral stabilisation in multi-storey timber volume element buildings},
  year         = {2019},
}