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10 records – page 1 of 1.

Valuation of the Composite Action of Lightweight and Prefabricated Concrete-Wood Floors for Multi-Storey Buildings

https://research.thinkwood.com/en/permalink/catalogue2666
Topic
Connections
Design and Systems
Mechanical Properties
Material
Timber-Concrete Composite
Application
Floors
Wood Building Systems
Organization
Université Laval
Country of Publication
Canada
Material
Timber-Concrete Composite
Application
Floors
Wood Building Systems
Topic
Connections
Design and Systems
Mechanical Properties
Keywords
Finite Element Analysis
Span Limits
Shear Test
Bending Test
Research Status
In Progress
Notes
Project contact is Luca Sorelli at Université Laval
Summary
This project aims to develop a new precast wood / concrete floor system that can push the span limits in multi-storey wood buildings. The multidisciplinary methodology includes a finite element analysis technique using the “DDuctileTCS” software developed at CIRCERB, shear tests on connections, bending tests of the composite beam and an extension of technical standards for the design of composite structures. This project will develop solutions to optimize the composite action and vibration of long-span precast and mixed floors. The methodology consists of: (i) analysis of systems and optimization of shapes by numerical finite element techniques; (ii) connection shear tests; (iii) proof of concept on a prototype beam in the laboratory.
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Structural Performance of Nail-Laminated Timber-Concrete Composite Floors

https://research.thinkwood.com/en/permalink/catalogue2146
Year of Publication
2017
Topic
Connections
Material
NLT (Nail-Laminated Timber)
Timber-Concrete Composite
Application
Floors
Author
Hong, Kwan Eui Marcel
Organization
University of British Columbia
Year of Publication
2017
Country of Publication
Canada
Format
Thesis
Material
NLT (Nail-Laminated Timber)
Timber-Concrete Composite
Application
Floors
Topic
Connections
Keywords
Truss Plates
Self-Tapping Screws
Strength
Stiffness
Shear Connectors
Quasi-Static Loading Test
Bending
Language
English
Research Status
Complete
Summary
Nail-laminated timber-concrete composite (TCC) is a system composed of a nail-laminated timber (NLT) panel connected to a concrete slab through shear connections. When used as flexural elements such as floors, the concrete and NLT are located in the compression and tension zones, respectively...
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Free
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Slip Modulus of Screws in Timber and Lightweight Concrete Composite Structures

https://research.thinkwood.com/en/permalink/catalogue1794
Year of Publication
2018
Topic
Connections
Material
Timber-Concrete Composite
Application
Floors
Author
Kozaric, Ljiljana
Kukaras, Danijel
Prokic, Aleksandar
Beševic, Miroslav
Kekanovic, Milan
Publisher
North Carolina State University
Year of Publication
2018
Country of Publication
United States
Citation
Kozaric, L., Kukaras, D., Prokic, A., Besevic, M., and Kekanovic, M. (2018). "Slip modulus of screws in timber and lightweight concrete composite structures," BioRes. 13(3), 6021-6032.
Format
Journal Article
Material
Timber-Concrete Composite
Application
Floors
Topic
Connections
Keywords
Tension
Compression
Weight
Slip Modulus
Connectors
Push-Out Tests
Eurocode 2
Eurocode 5
Language
English
Research Status
Complete
Series
BioResources
Online Access
Free
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Performance of Notched Connectors for CLT-Concrete Composite Floors

https://research.thinkwood.com/en/permalink/catalogue2656
Year of Publication
2020
Topic
Mechanical Properties
Connections
Material
CLT (Cross-Laminated Timber)
Timber-Concrete Composite
Application
Floors
Author
Van Thai, Minh
Ménard, Sylvain
Elachachi, Sidi Mohammed
Galimard, Philippe
Publisher
MDPI
Year of Publication
2020
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Timber-Concrete Composite
Application
Floors
Topic
Mechanical Properties
Connections
Keywords
Notched Connections
Finite Element Model
Connectors
Deconstructable Connections
Screw
Language
English
Research Status
Complete
Series
Buildings
Summary
CLT-concrete composite floor systems are a solution for timber buildings with a long-span floor. It yields a reduction of carbon footprint and even eco-friendly structure at the end of its service life. This study will evaluate the structural performance of notched connectors in the CLT-concrete composite floor, comprised of the serviceability stiffness, maximum load, and behavior at failure. The parameters of the test plan are the loaded edge length, the notch depth, the concrete thickness, and the screw length. Other secondary variables are also assessed, such as different loading sequences, speed of test, and timber moisture content. Experimental results prove that the performance of the connector depends significantly but not linearly on the notch depth and the length of the loaded edge. The connector with a deeper notch and a shorter heel will be stiffer and more robust, but it also tends to have a brittle rupture. The test results also help validate a solution for deconstructable connector systems. A nonlinear finite element model of the connector is built and validated versus the experimental results. It yields reasonably good predictions in terms of resistance and can capture the load-slip relationship.
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Free
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Design Guide for Timber-Concrete Composite Floors in Canada

https://research.thinkwood.com/en/permalink/catalogue2460
Year of Publication
2020
Topic
Design and Systems
Connections
Acoustics and Vibration
Fire
Material
Timber-Concrete Composite
Application
Floors
Organization
FPInnovations
Year of Publication
2020
Country of Publication
Canada
Format
Book/Guide
Material
Timber-Concrete Composite
Application
Floors
Topic
Design and Systems
Connections
Acoustics and Vibration
Fire
Keywords
Shear Connection
Ultimate Limit States
Vibration
Fire Resistance
Language
English
Research Status
Complete
Summary
As part of its research work on wood buildings, FPInnovations has recently launched a Design Guide for Timber-Concrete Composite Floors in Canada. This technique, far from being new, could prove to be a cost-competitive solution for floors with longer-span since the mechanical properties of the two materials act in complementarity. Timber-concrete systems consist of two distinct layers, a timber layer and a concrete layer (on top), joined together by shear connectors. The properties of both materials are then better exploited since tension forces from bending are mainly resisted by the timber, while compression forces from bending are resisted by the concrete. This guide, which contains numerous illustrations and formulas to help users better plan their projects, addresses many aspects of the design of timber-concrete composite floors, for example shear connection systems, ultimate limit state design, vibration and fire resistance of floors, and much more.
Online Access
Free
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Investigations on the Slip Modulus of a Notched Connection in Timber-Concrete Composite Floors

https://research.thinkwood.com/en/permalink/catalogue1702
Year of Publication
2016
Topic
Connections
Mechanical Properties
Material
Timber-Concrete Composite
Application
Floors
Author
Kudla, Katrin
Mönch, Simon
Kuhlmann, Ulrike
Volk, David
Götz, Tobias
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
Timber-Concrete Composite
Application
Floors
Topic
Connections
Mechanical Properties
Keywords
Slip Modulus
Notched Connections
Push-Out Tests
Failure Mode
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 4386-4394
Summary
For the design of timber-concrete composite (TCC) elements with notches, the slip modulus Kser represents an important property of the connection. In this paper available research results were gathered and further experimental tests were carried out in order to define the slip modulus of a notched connection. Therefore experimental...
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Free
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Long-Term Performance of Adhesively Bonded Timber-Concrete-Composites

https://research.thinkwood.com/en/permalink/catalogue390
Year of Publication
2014
Topic
Connections
Mechanical Properties
Serviceability
Material
Timber-Concrete Composite
Application
Beams
Author
Tannert, Thomas
Brunner, Maurice
Vallée, Till
Endacott, Bryn
Year of Publication
2014
Country of Publication
Canada
Format
Conference Paper
Material
Timber-Concrete Composite
Application
Beams
Topic
Connections
Mechanical Properties
Serviceability
Keywords
Adhesives
Long-term
Deflection
Environmental Conditions
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 10-14, 2014, Quebec City, Canada
Summary
Timber-concrete-composite (TCC) floors are a successful example of hybrid structural components. TCC are composed of timber and concrete layers connected by a shear connector and are commonly used in practical civil engineering applications. The connection of the two components is usually achieved with mechanical fasteners where relative slip cannot be prevented and the connection cannot be considered rigid. More recently, an adhesively bonded TCC system has been proposed, and has been shown to perform predictably under static short-term loading. One of the main considerations when designing TCC floors is their long-term performance. In the research presented herein, two adhesively bonded TCC beams were exposed to serviceability loads for approximately 4.5 years. During this time the environmental conditions and the deflections were monitored. After having been loaded for 4.5 years, the beams were tested to failure, resulting in findings that long-term loading caused no degradation of the adhesive bond. This research provides input data to develop design guidance for adhesively bonded TCC under long-term loading.
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Free
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CLT-Lightweight Concrete Composite Beam with Adhesive Connection

https://research.thinkwood.com/en/permalink/catalogue1701
Year of Publication
2016
Topic
Connections
Mechanical Properties
Material
Timber-Concrete Composite
CLT (Cross-Laminated Timber)
Application
Beams
Author
Kanócz, Ján
Bajzecerová, Viktória
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
Timber-Concrete Composite
CLT (Cross-Laminated Timber)
Application
Beams
Topic
Connections
Mechanical Properties
Keywords
Adhesives
Lightweight Concrete
Deformation
Vibration
Load Carrying Capacity
Shear
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 4378-4385
Summary
In the presented paper, results of theoretical and experimental investigation of timber-concrete composite members with adhesive connection are described. For the timber part of composite beams Cross Laminated Timber and for concrete part lightweight concrete was used. For the composite connection special adhesive to bounding wet...
Online Access
Free
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Topological Optimization of Ecological Tri-composite Floors in Lightweight Structural Wood, Ultra High Performance Concrete and Polymeric Fibres

https://research.thinkwood.com/en/permalink/catalogue2253
Topic
Design and Systems
Material
Timber-Concrete Composite
Application
Floors
Organization
Université Laval
Country of Publication
Canada
Material
Timber-Concrete Composite
Application
Floors
Topic
Design and Systems
Keywords
Cost
Environmental Impact
Fibre-Reinforced Polymer
Finite Element Analysis
Ultra-High Performance Concrete
FRP
UHPC
Biosourced Epoxy
Constructability
Research Status
In Progress
Notes
Project contact is Luca Sorelli at Université Laval
Summary
To minimize the built-in energy of the floor, we need to replace the current system with lighter solutions that retain the key features for robustness and maintenance, and are cost-effective and easy to build (Spadea et al., 2015). This project aims to explore innovative flooring solutions that make up a light wood load-bearing structure reinforced underneath by naturally occurring polymeric fibers (FRP) (Bencardino and Condello 2016), which work well in tension, and above an Ultra-Thin Ultra High Performance Concrete Slab (UHPC) that works exceptionally well in compression. Considering the application of very large floors in multi-storey buildings, the following key questions will be addressed: 1) what form should such a system have, 2) how will this be analyzed, and what mode of failure will be desirable? (3) what practical limitations would be imposed by constructability, (4) what would be the gain on economic cost and environmental impact from a life cycle analysis point of view, and (5) is possible to use biosourced epoxy for connections. The methodology consists of: (i) systems analysis and shape optimization using finite element numerical techniques, (ii) connection shear tests, and (iii) proof of concept on a beam prototype.
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Serviceability Performance of Timber Concrete Composite Floors

https://research.thinkwood.com/en/permalink/catalogue2353
Year of Publication
2019
Topic
Serviceability
Material
Timber-Concrete Composite
Application
Floors
Author
Tannert, Thomas
Mehdi Ebadi, Md
Gerber, Adam
Year of Publication
2019
Country of Publication
Canada
Format
Journal Article
Material
Timber-Concrete Composite
Application
Floors
Topic
Serviceability
Keywords
Hybrid
Concrete Slab
Bending
Vibration
Long-term Performance
Stiffness
Language
English
Research Status
Complete
Series
Modular and Offsite Construction (MOC)
Notes
DOI: https://doi.org/10.29173/mocs95
Online Access
Free
Resource Link
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10 records – page 1 of 1.