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Evaluation of Bending Tests on Composite Glulam-CLT Beams Connected with Double-Sided Punched Metal Plates and Inclined Screws

https://research.thinkwood.com/en/permalink/catalogue436
Year of Publication
2015
Topic
Connections
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Floors
Author
Jacquier, Nicolas
Girhammar, Ulf
Publisher
ScienceDirect
Year of Publication
2015
Country of Publication
Netherlands
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Floors
Topic
Connections
Mechanical Properties
Keywords
Multi-Storey
Four Point Bending Test
Shear connection
Double-sided Punched Metal Plate
Separation Forces
Language
English
Research Status
Complete
Series
Construction and Building Materials
Summary
This report presents bending tests performed on composite beams made from glulam beams and cross laminated timber (CLT) panels. The composite beam, with a T-cross section, represents a section of a floor element in a multi-storey CLT construction system. The shear connections used were made either of doublesided punched metal plate fasteners, either of inclined screws, or of a combination of both fastener types. The screws are used to secure the shear connection with double-sided nail plates with respect to possible separation forces between the glulam and the CLT. An additional test with a screw glued connection was made for comparison as the upper bound case in terms of composite action. The results show the beams with double-sided nail plates (with or without screws) achieved a very high level of composite action and an overall satisfactory behaviour. Almost full composite action was achieved for the screw-glued composite beam. A detailed design example of the beam element according to the Eurocode 5 and Finnish National Annex is presented.
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Impact of Air-Gap Design to Hygro-thermal Properties and Mould Growth Risk Between Concrete Foundation and CLT Frame

https://research.thinkwood.com/en/permalink/catalogue1327
Year of Publication
2017
Topic
Serviceability
Moisture
Material
CLT (Cross-Laminated Timber)
Application
Hybrid Building Systems
Author
Fedorik, Filip
Haapala, Antti
Publisher
ScienceDirect
Year of Publication
2017
Country of Publication
Netherlands
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Hybrid Building Systems
Topic
Serviceability
Moisture
Keywords
Hygrothermal
Mould
Concrete
Multi-Storey
Moisture Content
Airflow
Language
English
Research Status
Complete
Series
Energy Procedia
Summary
The presented work deals with hygro-thermal numerical simulation and mould growth risk evaluation between concrete foundation and frame of multi-story building made of CLT element modules. Structural CLT modules represent an approach towards wood material utilization in construction as its strength achieves markedly higher values then common structural wooden elements and makes rapid erection of the building possible. Although there are great promises that the novel CLT structures will gain ground in high-rise buildings market with apparent benefits in sustainability and inhabitant comments regarding ambience and acoustics, it is important to analyse their structural health and hygro-thermal conditions. The highest risk of unfavourable hygro-thermal conditions is usually presented in location characterized by thermal bridge, such as foundation, window-wall, wall-roof and wall-floor junctions. It is also of significant importance to analyse junctions between materials, whether wood, composite, mortar or concrete. A certain combination of thermal and humidity conditions in exposed time causes mould growth initiation that may lead to deterioration of structural material and unhealthy indoor environment. In this case study, the moisture content and air-flow in the junction and open space in structural design details between the first floor (of concrete) housing joint warehouse and technical spaces and the residential upper floors made of CLT modules is analysed. Conditions leading to probable moisture-derived mould issues and design parameters leading to sufficient ventilation according to Mould Index modelling are presented.
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Timber Multi-Level Buildings to 20 Levels Based on a Central Core of Integrated CLT Panels

https://research.thinkwood.com/en/permalink/catalogue1804
Year of Publication
2018
Topic
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Hybrid Building Systems
Wood Building Systems
Author
Chapman, John
Publisher
New Zealand Timber Design Society
Year of Publication
2018
Country of Publication
New Zealand
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Hybrid Building Systems
Wood Building Systems
Topic
Design and Systems
Keywords
Panels
Multi-Storey
Integrated Elements
Structural Design
Tall Wood
Language
English
Research Status
Complete
Summary
This research investigates a new structural system based on a central core of CLT (cross-laminated timber) panels to provide more useful multi-level timber buildings that are taller and with open floor areas. Because pinus radiata is a suitable timber for the manufacture of CLT panels, the system has the potential to add value...
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Developing a Prefabricated Low-Carbon Construction System Using Cross-Laminated Timber (CLT) Panels for Multistorey Inner-City Infill Housing in Australia

https://research.thinkwood.com/en/permalink/catalogue644
Year of Publication
2012
Topic
Environmental Impact
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Lehmann, Steffen
Publisher
College Publishing
Year of Publication
2012
Country of Publication
United States
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Environmental Impact
Keywords
Australia
Residential
Low Carbon Construction
Urban Infill Housing
Multi-Storey
Language
English
Research Status
Complete
Series
Journal of Green Building
Summary
In this chapter I describe a multidisciplinary research project into cross-laminated timber (CLT) panels which aims to transform the Australian construction and development industry and involves a range of key partners. This project will introduce CLT panels as a way to build with a lightweight prefabricated low-carbon construction system that is advantageous for urban infill and residential buildings. The challenge, research questions, and the advantages of this system are explained herein.
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Integrating Cross-Laminated Timber Panels to Construct Buildings To 20 Levels

https://research.thinkwood.com/en/permalink/catalogue456
Year of Publication
2014
Topic
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Chapman, John
Year of Publication
2014
Country of Publication
Canada
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Design and Systems
Keywords
Multi-Storey
Integrated Elements
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 10-14, 2014, Quebec City, Canada
Summary
A worldwide interest in timber multi-storey buildings is expected due to the environmental advantages of timber construction when compared to buildings in concrete and steel. Cross-laminated Timber, or CLT, was developed in the early 1990’s and glues and clamps timber planks in alternate layers to form large panels. The cross-laminating ensures reliable strength and stability. CLT construction has been used successfully for the nine storey Murray Grove Stadhaus building in London and the ten storey Forte building in Melbourne [1]. The paper proposes a new type of structural system that utilises CLT for buildings to twenty levels. The floor plan with a central rectangular core and columns at the perimeter is similar to a typical RC commercial building. There are considerably more open spaces than for existing CLT multi-level buildings which rely on multiple shear walls.
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Seismic Design of Mixed CLT/Light-Frame Multi-Storey Buildings

https://research.thinkwood.com/en/permalink/catalogue1666
Year of Publication
2016
Topic
Seismic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Shear Walls
Author
Follesa, Maurizio
Fragiacomo, Massimo
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Shear Walls
Topic
Seismic
Mechanical Properties
Keywords
Multi-Storey
Q Factor
Eurocode 8
Nonlinear Time History Analysis
Dynamic Analysis
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 3750-3759
Summary
This paper presents a study on the seismic design of hybrid multi-storey wood buildings made of CLT and Light-Frame shear walls acting at the same level. Within the framework of the force-based method, the aim of this study is to propose a simple formulation in order to establish the value of the q-factor of the hybrid system which could be also implemented in seismic design codes such as Eurocode 8. This was achieved by analysing the results of nonlinear dynamic (time-history) analyses performed on a four storey case-study building with different combinations of CLT and Light-Frame shear walls.
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Structural Analysis of CLT Multi-Storey Buildings Assembled with the Innovative X-RAD Connection System: Case-Study of a Tall-Building

https://research.thinkwood.com/en/permalink/catalogue1787
Year of Publication
2016
Topic
Connections
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Polastri, Andrea
Giongo, Ivan
Pacchioli, Stefano
Piazza, Maurizio
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Connections
Mechanical Properties
Keywords
Multi-Storey
X-RAD
Fully Threaded Screws
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 5868-5877
Summary
The cross laminated timber (CLT) technology is nowadays a well-known construction system, which that can be applied to several typologies of residential and commercial buildings. However some critical issues exist which limit the full development of the CLT construction technology: problems in handling, difficulty in assembling...
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Numerical Analyses of High- and Medium-Rise CLT Buildings Braced with Cores and Additional Shear Walls

https://research.thinkwood.com/en/permalink/catalogue1890
Year of Publication
2016
Topic
Design and Systems
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Walls
Wood Building Systems
Author
Polastri, Andrea
Pozza, Luca
Loss, Christiano
Smith, Ian
Editor
Cruz, Paulo J.S.
Publisher
CRC Press
Year of Publication
2016
Country of Publication
United Kingdom
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Walls
Wood Building Systems
Topic
Design and Systems
Mechanical Properties
Keywords
Panels
Multi-Storey
Analytical modeling
Language
English
Conference
International Conference on Structures and Architecture
Research Status
Complete
Series
Structures and Architecture: Beyond their Limits
Notes
Proceedings of the Third International Conference on Structures and Architecture (ICSA2016), July 27-29, 2016, Guimaraes, Portugal
p. 128-136
ISBN
978-1-138-02651-3
Summary
In the last twenty years CLT (cross-laminated timber) panels have become quite widely employed to build multi-storey buildings often characterized by the presence of many internal and perimeter shear walls. Building superstructures in which beam-and-column frameworks resits effects of gravity loads and core substructures and exterior CLT shear walls resist effects of lateral forces have been found structurally effective. Advantages of such structural arrangements can include creation of large interior spaces, high structural efficiency, and material economies. Here the behaviour of multi-storey buildings braced with CLT cores and additional CLT shear walls is examined based on numerical analyses. Two procedures for calibrating numerical analysis models are proposed and discussed here. The first approach is to use information from Eurocode 5, and the second approach is to use specifically applicable experimental data obrained through laboratory studies. Technically different ways of connecting CLT panels in order to obtain suitably stiff horizontal diaphragms are also presented.
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Performance-Based Design as a Tool to Evaluate Behavior Factors for Multi-Storey Timber Buildings

https://research.thinkwood.com/en/permalink/catalogue1684
Year of Publication
2016
Topic
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Walls
Author
Hummel, Johannes
Seim, Werner
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Walls
Topic
Design and Systems
Keywords
Displacement-Based Design
Force-Based Design
Multi-Storey
Behaviour Factors
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 4086-4095
Summary
This paper deals with aspects of force- and displacement-based design of multistorey cross-laminated timber (CLT) structures. A method to determine the behavior factors for timber structures based on nonlinear static analyses will be discussed. Different types of analysis models are considered. Results of experimental investigations on connections and CLT wall elements will be presented as a basis for numerical simulations.
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Timber-Steel Hybrid Beams for Multi-Storey Buildings: Final Report

https://research.thinkwood.com/en/permalink/catalogue1687
Year of Publication
2016
Topic
Mechanical Properties
Material
Steel-Timber Composite
Application
Hybrid Building Systems
Beams
Author
Winter, Wolfgang
Tavoussi, Kamyar
Riola Parada, Felipe
Bradley, Andrew
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
Steel-Timber Composite
Application
Hybrid Building Systems
Beams
Topic
Mechanical Properties
Keywords
Multi-Storey
Short-term
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 4210-4219
Summary
Timber-steel hybrid beams have been proposed, tested and analyzed for their use in multi-storey buildings. After the first concepts and tests were presented in the WCTE 2014, two whole testing series are finished and their results globally presented and analyzed. The beams fulfilled all the expectations and therefore can be presented as a reliable possibility for future proposals of timber-based frame multi-storey buildings. The present paper presents a summary of the part regarding hybrid beams inside the research project “Timber based mixed systems for dense construction in urban areas” carried out by the Institute of Structural Design and Timber Engineering of the Vienna University of Technology.
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10 records – page 1 of 1.