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6 records – page 1 of 1.

Advanced Wood-Based Solutions for Mid-Rise and High-Rise Construction: Proposed Vibration-Controlled Design Criterion for Supporting Beams

https://research.thinkwood.com/en/permalink/catalogue1178
Year of Publication
2018
Topic
Acoustics and Vibration
Mechanical Properties
Application
Floors
Author
Hu, Lin
Organization
FPInnovations
Year of Publication
2018
Country of Publication
Canada
Format
Report
Application
Floors
Topic
Acoustics and Vibration
Mechanical Properties
Keywords
Floor Supporting Beam
Bending Stiffness
Language
English
Research Status
Complete
Summary
For wood floor systems, their vibration performance is significantly dependent on the conditions of their supports, specifically the rigidity of the support. Detrimental effects could result if the floor supports do not have sufficient rigidity. This is special ture for floor supporting beams. The problem of vibrating floor due to flexible supporting beams can be solved through proper design of the supporting beams. However, there is currently no criterion set for the minimum requirement for floor supporting beam stiffness to ensure the beam is rigid enough. Designers’ current practice is to use the uniform load deflection criteria specified in the code for designing the supporting beams. This criterion is based on certain ratios of the floor span (e.g. L/360, L/480 etc.). The disadvantage of this approach is that it allows larger deflections for longer-span beams than for shorter beams. This means that engineers have to use their experience and judgement to select a proper ratio, particularly for the long-span beams. Therefore, a better vibration-controlled design criterion for supporting beams is needed. It is recommended to further verify the ruggedness of the proposed stiffness criterion for floor supporting beams using new field supporting beam data whenever they become available.
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Effect of Design Parameters on Mass Timber Floor Vibration Performance

https://research.thinkwood.com/en/permalink/catalogue2683
Year of Publication
2020
Topic
Acoustics and Vibration
Design and Systems
Material
DLT (Dowel Laminated Timber)
Application
Floors
Author
Hu, Lin
Organization
FPInnovations
Year of Publication
2020
Country of Publication
Canada
Format
Report
Material
DLT (Dowel Laminated Timber)
Application
Floors
Topic
Acoustics and Vibration
Design and Systems
Keywords
Concrete Topping
Plywood
Vibration Performance
Bending Stiffness
Language
English
Research Status
Complete
Summary
Mass timber is a generic name for a broad range of thick and heavy wood products such as cross-laminated timber (CLT), dowel-laminated timber (DLT), nail-laminated timber (NLT), and gluelaminated timber (GLT), among others. So far, vibration-controlled design methods have been developed mostly for CLT floors.
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Free
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Effet des Paramètres de Conception Sur la Performance Vibratoire des Planchers Massifs en Bois

https://research.thinkwood.com/en/permalink/catalogue2684
Year of Publication
2020
Topic
Acoustics and Vibration
Energy Performance
Material
DLT (Dowel Laminated Timber)
Application
Floors
Author
Hu, Lin
Organization
FPInnovations
Year of Publication
2020
Country of Publication
Canada
Format
Report
Material
DLT (Dowel Laminated Timber)
Application
Floors
Topic
Acoustics and Vibration
Energy Performance
Keywords
Concrete Topping
Plywood
Vibration Performance
Bending Stiffness
Language
French
Research Status
Complete
Summary
La construction massive en bois est un terme générique qui englobe une grande variété de produits du bois épais et lourds, notamment le bois lamellé-croisé (CLT), le bois lamellé-goujonné (DLT), le bois lamellé-cloué et le bois lamellé-collé (GLT). À ce jour, les méthodes de conception à vibrations contrôlées ont surtout été élaborées pour les planchers en CLT.
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Free
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Linear Dynamic Analysis for Wood-Based Shear Walls and Podium Structures: Part 1: Developing Input Parameters for Linear Dynamic Analysis

https://research.thinkwood.com/en/permalink/catalogue740
Year of Publication
2013
Topic
Design and Systems
Mechanical Properties
Material
Light Frame (Lumber+Panels)
Application
Shear Walls
Author
Ni, Chun
Newfield, Grant
Wang, Jasmine
Organization
FPInnovations
Year of Publication
2013
Country of Publication
Canada
Format
Report
Material
Light Frame (Lumber+Panels)
Application
Shear Walls
Topic
Design and Systems
Mechanical Properties
Keywords
Deflection
Linear Dynamic Analysis
National Building Code of Canada
Stiffness
Floor Drifts
Language
English
Research Status
Complete
Summary
Utilizing Linear Dynamic Analysis (LDA) for designing steel and concrete structures has been common practice over the last 25 years. Once preliminary member sizes have been determined for either steel or concrete, building a model for LDA is generally easy as the member sizes and appropriate stiffness...
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Free
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Seismic Response of Mid-Rise Wood-Frame Buildings on Podium

https://research.thinkwood.com/en/permalink/catalogue2604
Year of Publication
2017
Topic
Design and Systems
Seismic
Material
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Author
Chen, Zhiyong
Ni, Chun
Organization
FPInnovations
Year of Publication
2017
Country of Publication
Canada
Format
Report
Material
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Topic
Design and Systems
Seismic
Keywords
Earthquake
Seismic Performance
Mid-Rise
Podium Structures
Stiffness
Language
English
Research Status
Complete
Summary
An analytical study to examine the seismic performance of wood-frame podium buildings up to 8 storeys is presented in this report. Simple archetype podium buildings of 5 to 8 storeys in total height were designed in accordance with the two-step analysis procedure given in 2015 NBCC or ASCE 7-10. Nonlinear time-history dynamic analyses were conducted using earthquake ground motions selected and scaled based on the guidelines proposed by Tremblay et al. to match the reference design spectra in NBCC. Using the performance-based seismic design criteria established in the NEESWood project, it was found that: Podium buildings with a building period ratio of 1.1 (ASCE 7-10) did not meet the performance criteria, thus the period ratio requirement of 1.1 was not appropriate. A stiffness ratio of not less than 10 times (ASCE 7-10) was more appropriate as a requirement of using two-step analysis procedure for wood-frame podium buildings up to 8 storeys, compared to that of not less than 3 times (NBCC Commentary). With a higher stiffness ratio, the seismic response of the upper wood-frame structure of podium building was closer to that of the pure wood-frame structure. The results of this study will be used to guide the assessment of the feasibility of constructing wood-frame podium buildings of 8 storeys in height and the development of design guidelines. This would also guide the longer-term goal of proposing changes to the building codes.
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Free
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Time-Dependent Behavior of Cross-Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue1111
Year of Publication
2014
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Author
Pirvu, Ciprian
Organization
FPInnovations
Year of Publication
2014
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Topic
Mechanical Properties
Keywords
Creep
Duration of Load
Time Dependent Behavior
Stiffness
Deflection
Language
English
Research Status
Complete
Summary
Cross laminated timber (CLT) panels were manufactured and tested to assess their time dependent behaviour. This study is intended to help guide the development of an appropriate test method and acceptance criteria to account for duration of load and creep effects in the design of structures using CLT.
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Free
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6 records – page 1 of 1.