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16 records – page 1 of 2.

Computational Modelling of Cross-Laminated Timber Panels

https://research.thinkwood.com/en/permalink/catalogue2421
Year of Publication
2019
Topic
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Walls
Floors

Damping in Timber Structures

https://research.thinkwood.com/en/permalink/catalogue106
Year of Publication
2012
Topic
Design and Systems
Material
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Floors
Beams

Design Methodology Analysis of Cross-Laminated Timber Elements Subjected to Flexure

https://research.thinkwood.com/en/permalink/catalogue7
Year of Publication
2014
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Ceilings
Floors
Walls
Author
Vilguts, Aivars
Serdjuks, Dmitrijs
Mierinš, Imants
Publisher
Kaunas University of Technology
Year of Publication
2014
Country of Publication
Lithuania
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Ceilings
Floors
Walls
Topic
Mechanical Properties
Keywords
Design
Flexural
FEM method
Testing
Panels
Language
English
Research Status
Complete
Series
Journal of Sustainable Architecture and Civil Engineering
ISSN
2335–2000
Online Access
Free
Resource Link
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Dynamic Response of Cross Laminated Timber Floors Subject to Internal Loads

https://research.thinkwood.com/en/permalink/catalogue2716
Year of Publication
2020
Topic
Design and Systems
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Floors
Author
Skoglund, Jacob
Publisher
Lund University
Year of Publication
2020
Format
Thesis
Material
CLT (Cross-Laminated Timber)
Application
Floors
Topic
Design and Systems
Mechanical Properties
Keywords
Internal Loads
Finite Element Method (FEM)
Panels
Seven-Layer Model
Modal Analysis
3D Model
2D Model
Language
English
Research Status
Complete
Summary
The deregulation of timber for use in large scale constructions has seen the addition of new innovative timber-based products to a category of products referred to as engineered wood products. A now well established addition to these products is cross laminated timber, or CLT for short. CLT products use a form of orthogonal layering, where several parallel wooden boards are arranged in a number of layers, each layer being orthogonal to the previous. The use of orthogonal layering allows for increased stiffness in the two plane directions, resulting in a lightweight construction product with high load bearing capacity and stiffness. To evaluate the dynamic behaviour of structures, engineers commonly apply the finite element method, where a system of equations are solved numerically. Given a sufficient amount of computational power and time, the finite element method can help to solve most dynamical problems. For sufficiently large or complex structures the amount of resources needed may be outside the scope of possibility or feasibility for many. Therefore, evaluating the usage of certain design simplifications, such as omitting to models aspects of the geometry, or alternative forms of analysis for CLT panels may help to reduce the time and resources required for an analysis. In this Master's dissertation, a seven-layer CLT-panel has been created. In the model, each individual board and the gaps between the boards are modelled. The seven-layer model is used as a reference to evaluate the possibility of using less detailed alternative models. The alternative models are created as a layered 3D model and a composite 2D model, both models omit the modelling of the individual laminations, resulting in the layers being solid. The results show small errors for the alternative models when using modal analysis. Concluding that the modal behaviour and dynamic response of a CLT panel can be evaluated using a composite 2D model or a less-detailed layered 3D model. This significantly reduces the amount of time and computational power needed for an analysis, and clearly indicates the benefit of using alternative less detailed models.
Online Access
Free
Resource Link
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Effects of Heavy Topping on Vibrational Performance of Cross-Laminated Timber Floor Systems

https://research.thinkwood.com/en/permalink/catalogue2708
Year of Publication
2020
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Floors
Author
Schwendy, Benjamin
Publisher
Clemson University
Year of Publication
2020
Country of Publication
United States
Format
Thesis
Material
CLT (Cross-Laminated Timber)
Application
Floors
Topic
Acoustics and Vibration
Keywords
Vibration Serviceability
Concrete Topping
Panels
Insulation
Language
English
Research Status
Complete
Summary
Cross-Laminated Timber (CLT) is gaining momentum as a competitor to steel and concrete in the construction industry. However, with CLT being relatively new to North America, it is being held back from realizing its full potential by a lack of research in various areas, such as vibration serviceability. This has resulted in vague design guidelines, leading to either overly conservative designs, hurting profit margins, or leading to overly lenient designs, resulting in occupancy discomfort. Eliminating these design inefficiencies is paramount to expanding the use of CLT and creating a more sustainable construction industry. This thesis focuses on the effect of a heavy topping, in this case 2" of concrete over a layer of rigid insulation, on a CLT floor. To this end, modal analysis was performed on two spans of three CLT panels in the Andy Quattlebaum Outdoor Education Center at Clemson University. By performing a series of instrumented heel-drop tests with a roving grid of accelerometers, the natural frequencies, mode shapes, frequency response functions, and damping coefficients were determined. By comparing the results to several different numerical models, the most appropriate model was selected for use in future design. In addition, a walking excitation test was performed to calculate the root mean square acceleration of the floor for comparison to current design standards. This study found that, with a layer of rigid insulation separating the topping and the panel, the system behaved predictably like a non-composite system. The resultant mode shapes also verified that the boundary conditions behaved very close to “hinged” and showed that the combination of the surface splines and the continuous topping provide significant transverse continuity in terms of response to vibrations. Lastly, the results of the walking excitation test showed that, with some further study, the current design standards for steel vibration serviceability can be applied to great effect to CLT systems.
Online Access
Free
Resource Link
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Fire Resistance of Partially Protected Cross-Laminated Timber Rooms

https://research.thinkwood.com/en/permalink/catalogue322
Year of Publication
2015
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls

Fire Tests on Loaded Cross-Laminated Timber Wall and Floor Elements

https://research.thinkwood.com/en/permalink/catalogue254
Year of Publication
2014
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Author
Klippel, Michael
Leyder, Claude
Frangi, Andrea
Fontana, Mario
Publisher
International Association For Fire Safety Science
Year of Publication
2014
Country of Publication
Netherlands
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Topic
Fire
Keywords
Charring Rate
Canada
Panels
Fire Resistance
Language
English
Conference
Fire Safety Science International Symposium
Research Status
Complete
Notes
February 9-14, 2014, Christchurch, New Zealand
Online Access
Free
Resource Link
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Hybrid Wood-Based Structural System for Multi-Storey Buildings

https://research.thinkwood.com/en/permalink/catalogue1894
Year of Publication
2016
Topic
Design and Systems
Material
CLT (Cross-Laminated Timber)
Steel-Timber Composite
Application
Floors
Frames
Author
Loss, Cristiano
Piazza, Maurizio
Zandonini, Riccardo
Year of Publication
2016
Country of Publication
Portugal
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Steel-Timber Composite
Application
Floors
Frames
Topic
Design and Systems
Keywords
Panels
Prefabricated
Shear Tests
Connections
Bending Tests
Language
English
Conference
International Conference on Structures and Architecture
Research Status
Complete
Notes
July 27-29, Guimaraes, Portugal
Online Access
Free
Resource Link
Less detail

In-plane Shear Modulus of Cross-laminated Timber by Diagonal Compression Test

https://research.thinkwood.com/en/permalink/catalogue2420
Year of Publication
2019
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Walls
Beams
Floors

Mechanical Behavior of Cross-Laminated Timber Panels Made of Low-Added-Value Timber

https://research.thinkwood.com/en/permalink/catalogue2418
Year of Publication
2019
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Walls
Floors
Author
Alencar, Juliana Bello Mussi
Moura, Jorge Daniel de Melo
Publisher
Forest Products Society
Year of Publication
2019
Country of Publication
United States
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Walls
Floors
Topic
Mechanical Properties
Keywords
Structural Performance
Panels
Eucalyptus
Pine
Plantation
Strength
Stiffness
Language
English
Research Status
Complete
Series
Forest Products Journal
Online Access
Free
Resource Link
Less detail

16 records – page 1 of 2.