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Advanced wood-based solutions for mid-rise and high-rise construction: analytical models for balloon-type CLT shear walls

https://library.fpinnovations.ca/en/permalink/fpipub52680
Author
Chen, Zhiyong
Cuerrier-Auclair, Samuel
Popovski, Marjan
Date
July 2018
Material Type
Research report
Field
Sustainable Construction
Author
Chen, Zhiyong
Cuerrier-Auclair, Samuel
Popovski, Marjan
Contributor
Natural Resources Canada. Canadian Forest Service
Date
July 2018
Material Type
Research report
Physical Description
83 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Cross Laminated Timber
Performance
Building construction
Building materials
Energy
Language
English
Abstract
Lack of research and design information for the seismic performance of balloon-type CLT shear walls prevents CLT from being used as an acceptable solution to resist seismic loads in balloon-type mass-timber buildings. To quantify the performance of balloon-type CLT structures subjected to lateral loads and create the research background for future code implementation of balloon-type CLT systems in CSA O86 and NBCC, FPInnovations initiated a project to determine the behaviour of balloon-type CLT construction. A series of tests on balloon-type CLT walls and connections used in these walls were conducted. Analytical models were developed based on engineering principles and basic mechanics to predict the deflection and resistance of the balloon-type CLT shear walls. This report covers the work related to development of the analytical models and the tests on balloon-type CLT walls that the models were verified against.
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Expanding wood use towards 2025: seismic performance of braced mass timber frames, year 2

https://library.fpinnovations.ca/en/permalink/fpipub52921
Author
Chen, Zhiyong
Popovski, Marjan
Date
February 2020
Material Type
Research report
Field
Sustainable Construction
Author
Chen, Zhiyong
Popovski, Marjan
Date
February 2020
Material Type
Research report
Physical Description
40 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Cross Laminated Timber (CLT)
Performance
Building construction
Building materials
Seismic
Series Number
Expanding wood use towards 2025
Language
English
Abstract
Braced timber frames (BTFs) are one of the most efficient structural systems to resist lateral loads induced by earthquakes or high winds. Although BTFs are implemented as a system in the National Building Code of Canada (NBCC), no design guidelines currently exist in CSA O86. That not only leaves these efficient systems out of reach of designers, but also puts them in danger of being eliminated from NBCC. The main objective of this project is to generate the technical information needed for development of design guidelines for BTFs as a lateral load resisting system in CSA O86. The seismic performance of 30 BTFs with riveted connections was studied last year by conducting nonlinear dynamic analysis; and also 15 glulam brace specimens using bolted connections were tested under cyclic loading.
In the second year of the project, a relationship between the connection and system ductility of BTFs was derived based on engineering principles. The proposed relationship was verified against the nonlinear pushover analysis results of single- and multi-storey BTFs with various building heights. The influence of the connection ductility, the stiffness ratio, and the number of tiers and storeys on the system ductility of BTFs was investigated using the verified relationship. The minimum connection ductility for different categories (moderately ductile and limited ductility) of BTFs was estimated.
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Performance-based approach to support tall and large wood buildings: fire and seismic performance

https://library.fpinnovations.ca/en/permalink/fpipub49569
Author
Dagenais, Christian
Chen, Zhiyong
Popovski, Marjan
Date
October 2017
Material Type
Research report
Field
Sustainable Construction
Author
Dagenais, Christian
Chen, Zhiyong
Popovski, Marjan
Contributor
Natural Resources Canada. Canadian Forest Service
Date
October 2017
Material Type
Research report
Physical Description
48 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Cross Laminated Timber
Fire
Performance
Adhesives
Language
English
Abstract
The objective of the current project is to develop a performance-based design process for wood-based design systems that would meet the objectives and functional statements set forth in the National Building Code of Canada. More specifically, this report discusses the fire and seismic performance of buildings, as identified as a priority in a previous FPInnovations report.
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Solutions for upper mid-rise and high-rise mass timber construction: numerical models for post-tensioned shear wall system with energy dissipators

https://library.fpinnovations.ca/en/permalink/fpipub52872
Author
Chen, Zhiyong
Popovski, Marjan
Date
May 2019
Material Type
Research report
Field
Sustainable Construction
Author
Chen, Zhiyong
Popovski, Marjan
Contributor
Natural Resources Canada. Canadian Forest Service
Date
May 2019
Material Type
Research report
Physical Description
43 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Cross Laminated Timber
Performance
Building construction
Building materials
Loads
Language
English
Abstract
The latest developments in seismic design philosophy in modern urban centers have moved towards the development of new types of so called “resilient” or “low damage” structural systems. Such systems reduce the damage to the structure during an earthquake while offering the same or higher levels of safety to occupants. One such structural system in mass timber construction is the “Pres-Lam” system developed by Structural Timber Innovation Company (STIC) and Prestressed Timber Limited (PTL), both from New Zealand. FPInnovations has acquired the Intellectual Property rights for the Pres-Lam system for use in Canada and the United States.
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Solutions for uppper mid-rise and high-rise mass timber construction: seismic performance of braced mass timber frames, year 1

https://library.fpinnovations.ca/en/permalink/fpipub52818
Author
Chen, Zhiyong
Popovski, Marjan
Symons, Paul D.
Date
April 2019
Material Type
Research report
Field
Sustainable Construction
Author
Chen, Zhiyong
Popovski, Marjan
Symons, Paul D.
Contributor
Natural Resources Canada. Canadian Forest Service
Date
April 2019
Material Type
Research report
Physical Description
44 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Cross Laminated Timber (CLT)
Performance
Building construction
Building materials
Seismic
Language
English
Abstract
Braced mass timber (MT) frames are one of the most efficient structural systems to resist lateral loads induced by earthquakes or high winds. Although braced frames are presented as a system in the National Building Code of Canada (NBCC), no design guidelines currently exist in CSA O86. That not only leaves these efficient systems out of reach of designers, but also puts them in danger of being eliminated from NBCC. The main objective of this project was to develop the technical information needed for development of design guidelines for braced MT frames as a lateral load resisting system in CSA O86. In the first year of the project, the seismic performance of thirty (30) braced MT frames with riveted connections with various numbers of storeys, storey heights, and bay aspect ratios were studied by conducting non-linear pushover and dynamic time-history analyses. Also, fifteen (15) glulam brace specimens using bolted connections with different slenderness ratios were tested under monotonic and cyclic loading. Results from this multi-year project will form the basis for developing comprehensive design guidelines for braced frames in CSA O86.
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