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Floor Diaphragms in Multi-Storey Timber Buildings

https://research.thinkwood.com/en/permalink/catalogue71
Year of Publication
2016
Topic
Design and Systems
Seismic
Material
Light Frame (Lumber+Panels)
Glulam (Glue-Laminated Timber)
LVL (Laminated Veneer Lumber)
CLT (Cross-Laminated Timber)
Application
Floors
Author
Moroder, Daniel
Organization
University of Canterbury
Year of Publication
2016
Country of Publication
New Zealand
Format
Thesis
Material
Light Frame (Lumber+Panels)
Glulam (Glue-Laminated Timber)
LVL (Laminated Veneer Lumber)
CLT (Cross-Laminated Timber)
Application
Floors
Topic
Design and Systems
Seismic
Keywords
Diaphragms
Lateral Loads
Multi-Storey
Equivalent Truss Method
Pres-Lam
Language
English
Research Status
Complete
Summary
This thesis studies the behaviour of diaphragms in multi-storey timber buildings by providing methods for the estimation of the diaphragm force demand, developing an Equivalent Truss Method for the analysis of timber diaphragms, and experimentally investigating the effects of displacement incompatibilities between the diaphragm and the lateral load resisting system and developing methods for their mitigation. Although shortcomings in the estimation of force demand, and in the analysis and design of concrete floor diaphragms have already been partially addressed by other researchers, the behaviour of diaphragms in modern multi-storey timber buildings in general, and in low damage Pres-Lam buildings (consisting of post-tensioned timber members) in particular is still unknown. The analysis of light timber framing and massive timber diaphragms can be successfully analysed with an Equivalent Truss Method, which is calibrated by accounting for the panel shear and fastener stiffnesses. Finally, displacement incompatibilities in frame and wall structures can be accommodated by the flexibilities of the diaphragm panels and relative connections. A design recommendations chapter summarizes all findings and allows a designer to estimate diaphragm forces, to analyse the force path in timber diaphragms and to detail the connections to allow for displacement incompatibilities in multi-storey timber buildings.
Online Access
Free
Resource Link
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Multi-Criteria Optimization of Prefabricated Wood-Concrete Floors for Multi-Storey Buildings Considering the Construction Method

https://research.thinkwood.com/en/permalink/catalogue2667
Topic
Design and Systems
Acoustics and Vibration
Material
Timber-Concrete Composite
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Floors
Wood Building Systems
Organization
Université Laval
Country of Publication
Canada
Material
Timber-Concrete Composite
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Floors
Wood Building Systems
Topic
Design and Systems
Acoustics and Vibration
Keywords
Sound Insulation
Weight
Construction Time
Environmental Impact
Research Status
In Progress
Notes
Project contact is Luca Sorelli at Université Laval
Summary
This project aims to develop a new prefabricated wood / concrete floor system that is innovative and competitive in multi-storey wood buildings. The design of the floor will be carried out through a multidisciplinary approach that considers the composite action of the precast floor, the integration of sound insulation, vibrations, the weight of the structure, construction time and environmental impact. Among other things, the construction method and the use of ultra high performance green composite concretes with CLT slabs or GLULAM beams will be considered. The methodology includes digital analysis tools and a new method for the design of mixed structures as well as the life cycle tool. The laboratory proof of concept will assess the performance of the optimized floor system and compare it to existing floors.
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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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Design of Floor Diaphragms in Multi-Storey Timber Buildings

https://research.thinkwood.com/en/permalink/catalogue294
Year of Publication
2015
Topic
Design and Systems
Seismic
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Floors
Author
Moroder, Daniel
Smith, Tobias
Pampanin, Stefano
Palermo, Alessandro
Buchanan, Andrew
Year of Publication
2015
Country of Publication
New Zealand
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Floors
Topic
Design and Systems
Seismic
Keywords
Diaphragms
Multi-Storey
Commercial
Lateral Loads
Equivalent Truss Method
Lateral Load Resisting System
Language
English
Conference
New Zealand Society for Earthquake Engineering Conference
Research Status
Complete
Notes
April 10-12, 2015, Rotorua, New Zealand
Summary
This paper discusses the design of timber diaphragms, in response to the growing interest in multi-storey commercial timber structures, and the lack of guidance or regulations regarding the seismic design of timber diaphragms. Proper performance of floor diaphragms is required to transfer all lateral loads to the vertical systems that resist them, but design for earthquake loads can be more complex than design for wind loads. This paper confirms that the seismic design of a diaphragm is intimately linked to the seismic design of the whole building. Diaphragm failure, even if restricted to a limited diaphragm portion, can compromise the behaviour of the whole building. It is therefore necessary to design and detail diaphragms for all possible load paths and to evaluate their influence on the load distribution within the rest of the structure. It is strongly recommended that timber diaphragms be designed as elastic elements, by applying dynamic amplification and overstrength factors derived from the lateral load resisting system. This paper shows that some current design recommendations for plywood sheathing on light timber framing can be applied to massive wood diaphragms, but for more complex floor geometries an equivalent truss method is suggested. Diaphragm flexibility and displacement incompatibilities between the floor diaphragms and the lateral resisting systems also need to be accounted for.
Online Access
Free
Resource Link
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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.
Online Access
Free
Resource Link
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Modelling the Fire Performance of Structural Timber Floors

https://research.thinkwood.com/en/permalink/catalogue212
Year of Publication
2012
Topic
Design and Systems
Fire
Material
Timber-Concrete Composite
Application
Floors
Author
O'Neill, James
Abu, Anthony
Carradine, David
Moss, Peter
Buchanan, Andrew
Year of Publication
2012
Country of Publication
Switzerland
Format
Conference Paper
Material
Timber-Concrete Composite
Application
Floors
Topic
Design and Systems
Fire
Keywords
Failure Mechanisms
Finite Element Model
Fire Resistance
Thermo-mechanical
Full Scale
Language
English
Conference
International Conference on Structures in Fire
Research Status
Complete
Notes
June 6-8, 2012, Zurich, Switzerland
Summary
This paper describes numerical modelling to predict the fire resistance of engineered timber floor systems. The floor systems under investigation are timber composite floors (various timber joist and box floor cross sections), and timber-concrete composite floors. The paper describes 3D numerical modelling of the floor systems using finite element software, carried out as a sequential thermo-mechanical analysis. Experimental testing of these floor assemblies is also being undertaken to calibrate and validate the models, with a number of full scale tests to determine the failure mechanisms for each floor type and assess fire damage to the respective system components. The final outcome of this research will be simplified design methods for calculating the fire resistance of a wide range of engineered timber floor systems.
Online Access
Free
Resource Link
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Japan Kobe Earthquake Shake Table Simulation – Earthquake Performance of Multi-storey Cross Laminated Timber Buildings

https://research.thinkwood.com/en/permalink/catalogue1849
Year of Publication
2018
Topic
Seismic
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Quenneville, Pierre
Morris, Hugh
Publisher
New Zealand Timber Design Society
Year of Publication
2018
Country of Publication
New Zealand
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Seismic
Design and Systems
Keywords
Earthquake
Shake Table Test
Panels
Language
English
Research Status
Complete
Series
New Zealand Timber Design Journal
Online Access
Free
Resource Link
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Value-Driven Design Approach for Optimal Long-Span Timber-Concrete Composite Floor in Multi-Storey Wooden Residential Buildings

https://research.thinkwood.com/en/permalink/catalogue2738
Year of Publication
2020
Topic
Design and Systems
Material
Timber-Concrete Composite
Application
Floors
Author
Movaffaghi, Hamid
Pyykkö, Johan
Yitmen, Ibrahim
Publisher
Taylor&Francis Online
Year of Publication
2020
Format
Journal Article
Material
Timber-Concrete Composite
Application
Floors
Topic
Design and Systems
Keywords
Long Span Floors
TCC
Design Challenges
Mid-Rise
Residential Buildings
Multi-Family
Multi-Storey
Long Span
Serviceability
Sustainability
Language
English
Research Status
Complete
Series
Civil Engineering and Environmental Systems
Summary
Long-span timber-concrete composite (TCC) floor systems have the potential to address the design challenges for conventional wooden floors in residential multi-storey timber frame buildings. The aim of this paper is to develop a design approach for long-span timber-concrete composite floor system of 6–9 m. A framework based on value-driven design approach has been developed for integration of results from graphical multi-objective optimisation, spreadsheet-based analysis, structural static and dynamic finite element analysis, and multi-criteria decision making. To verify the developed framework, a residential five-storey timber frame building as a case study has been studied. Optimal design includes optimised thickness of the concrete and optimised smeared stiffness of connectors for three different comfort classes A to C in descending order. TCC floor with span length 7.3 [m] belonging to comfort class A and TCC floor with span length 9.0 [m] belonging to comfort class C has been chosen as optimal solutions. The results indicate that proposed and innovative design approach is a promising tool for developers, architects and structural engineers when designing optimal long-span timber-concrete composite floor system.
Online Access
Free
Resource Link
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Seismic Performance of Multi-Storey Timber Buildings: TUGraz Building

https://research.thinkwood.com/en/permalink/catalogue5
Year of Publication
2013
Topic
Seismic
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Costa, Alfredo
Flatscher, Georg
Schickhofer, Gerhard
Candeias, Paulo
Organization
Seismic Engineering Research Infrastructures for European Synergies
Year of Publication
2013
Country of Publication
Italy
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Seismic
Keywords
Connections
Shake Table Test
Steel
Multi-Storey
Language
English
Research Status
Complete
Series
Timber Buildings Project
Summary
This document reports the outcome of the seismic test on the TUGraz building, the fourth in a total of four buildings included in the TIMBER BUILDINGS Project. This building is a cross laminated system (CTL). The goal of the tests was to assess the seismic performance of the building, panel elements and steel connectors, defined in terms of relative displacements and hold-down forces. This report presents the results of the experimental tests carried out in the LNEC 3D shaking table on a cross laminated system (CTL). The tests were carried out on February 20 and 21, 2013 on a three storey real scale building.
Online Access
Free
Resource Link
Less detail

Seismic Performance of Multi-Storey Timber Buildings Legnocase Building

https://research.thinkwood.com/en/permalink/catalogue375
Year of Publication
2013
Topic
Seismic
Material
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Author
Costa, Alfredo
Candeias, Paulo
Bartolucci, Camilla
Piazza, Maurizio
Tomasi, Roberto
Grossi, Paolo
Organization
Seismic Engineering Research Infrastructures for European Synergies
Year of Publication
2013
Country of Publication
Italy
Format
Report
Material
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Topic
Seismic
Keywords
Steel Connections
Shake Table Test
Language
English
Research Status
Complete
Summary
This document reports the outcome of the seismic test on the LegnoCase building, the second in a total of four buildings included in the TIMBER BUILDINGS Project. This building is a platform frame system with sheathing assembled by means of OSB panels (PF-OSB). The goal of the tests was to assess the seismic performance of the building, panel elements and steel connectors, defined in terms of relative displacements and hold-down forces. This report presents the results of the experimental tests carried out in the LNEC 3D shaking table on a platform frame system (PSF) with sheathing assembled by means of OSB panels (PF-OSB) as part of the SERIES Project on multi-storey timber buildings. This project is coordinated by the University of Trento and involves the University of Minho and the Graz University of Technology, at LNEC, in Lisbon. The tests were carried out on June 25, 26, and 27, 2012 on a three storey real scale building.
Online Access
Free
Resource Link
Less detail

10 records – page 1 of 1.