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38 records – page 1 of 4.

Numerical Analysis on Global Serviceability Behaviours of Tall CLT Buildings to the Eurocodes and UK National Annexes

https://research.thinkwood.com/en/permalink/catalogue2878
Year of Publication
2021
Topic
Serviceability
Wind
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Zhao, Xuan
Zhang, Binsheng
Kilpatrick, Tony
Sanderson, Iain
Organization
Glasgow Caledonian University
Editor
Tannert, Thomas
Publisher
MDPI
Year of Publication
2021
Country of Publication
United Kingdom
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Serviceability
Wind
Keywords
Tall Timber Buildings
Wind Load
Horizontal Displacement
Vibration Response
Peak Acceleration
Language
English
Research Status
Complete
Series
Buildings
Summary
Cross-laminated timber (CLT) is an innovative engineered timber product and has been widely used for constructing tall timber buildings due to its excellent structural performance and good strength with its multi-layers of boards in both perpendicular directions. However, the global serviceability performance of tall timber buildings constructed from CLT products for the lift core, walls, and floors under wind load is not well known yet, even though it is crucial in a design. In this study, the finite element software SAP2000 is used to numerically simulate the global static and dynamic serviceability behaviours of a 30-storey tall CLT building assumed in Glasgow, Scotland, UK. The maximum horizontal storey displacement due to wind is only 16.6% of the design limit and the maximum global horizontal displacement is only 13.8% of the limit set to the Eurocodes. The first three lowest vibrational frequencies, modes and shapes were obtained, with the fundamental frequency being 19.9% larger than the code-recommended value. Accordingly, the peak acceleration of the building due to wind was determined as per the Eurocodes and ISO standard. The results show that the global serviceability behaviours of the building satisfy the requirements of the Eurocodes and other design standards. Parametric studies on the peak accelerations of the tall CLT building were also conducted by varying the timber material properties and building masses. By increasing the timber grade for CLT members, the generalised building mass and the generalised building stiffness can all be adopted to lower the peak accelerations at the top level of the building, so as to reduce human perceptions of the wind-induced vibrations with respect to the peak acceleration.
Online Access
Free
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WoodST: An Advanced Modelling Tool for Fire Safety Analysis of Timber Structures

https://research.thinkwood.com/en/permalink/catalogue2827
Year of Publication
2021
Topic
Connections
Design and Systems
Fire
Seismic
Wind
Material
Glulam (Glue-Laminated Timber)
LVL (Laminated Veneer Lumber)
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Author
Chen, Zhiyong
Dagenais, Christian
Ni, Chun
Organization
FPInnovations
Year of Publication
2021
Country of Publication
Canada
Format
Report
Material
Glulam (Glue-Laminated Timber)
LVL (Laminated Veneer Lumber)
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Topic
Connections
Design and Systems
Fire
Seismic
Wind
Keywords
Model
Heat Transfer
Charring Rate
Load-displacement Curve
Failure
Fire Safety
Language
English
Research Status
Complete
Series
InfoNote
Summary
An advanced modelling tool, WoodST, has been developed for fire safety analysis of timber structures. It is demonstrated that this advanced modelling tool can predict the structural response of LVL beams, glulam bolted connections, OSB-web I-joist and wood-frame floors under forces and fire conditions with an accuracy acceptable to design practitioners (i.e., within 10% of test data). The developed modelling tool can: Fill the gap in terms of suitable models for timber connections, which is an impediment for the design and construction of tall wood buildings; Provide a cost-effective simulation solution compared to costly experimental solutions; and Significantly reduce the cost and shorten the time for the development and/or optimization of new wood-based products and connections.
Online Access
Free
Resource Link
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Dynamic Performance of Tall Mass-Timber Buildings

https://research.thinkwood.com/en/permalink/catalogue2737
Year of Publication
2020
Topic
Seismic
Wind
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Author
Pangavhane, Swapnil
MagarPatil, Dr H. R.
Year of Publication
2020
Country of Publication
India
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Topic
Seismic
Wind
Keywords
India
Core Wall
Time-History Analysis
Lateral Load
Earthquake
Performance
ETABS
Language
English
Research Status
Complete
Series
Journal of Engineering Sciences
Summary
The construction materials used in the building tall structures are responsible for extremely high carbon emissions. Therefore, to address this issue building designers are constantly looking at alternative sustainable construction materials. A new type of timber called MassTimber as a material for construction is now attracting the building designers because of its sustainability advantages. Mass-timber is an innovative type of engineered timber with improved structural properties making it suitable for the construction of tall and heavy structures. This paper is intended to study the performance of tall mass-timber buildings under the most severe dynamic loading conditions of India. Three models of mass-timber buildings are analyzed in ETABS under the seismic and wind loads according to the demands of most severe earthquake zone-V and one of the windiest regions at Bhuj, India. It is observed that the mass participation during seismic activities is considerably low and the wind loads are considerably higher than the seismic loads. It is concluded that with a suitable lateral load resisting structural system mass-timber buildings can perform adequately.
Online Access
Free
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Internal Perforated-steel-plate Connections with Self-Drilling Dowels for Cross-laminated Timber

https://research.thinkwood.com/en/permalink/catalogue2807
Year of Publication
2020
Topic
Connections
Seismic
Wind
Material
CLT (Cross-Laminated Timber)
Application
Shear Walls
Author
Drexler, Maximilian
Tannert, Thomas
Organization
University of Northern British Columbia
Year of Publication
2020
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Shear Walls
Topic
Connections
Seismic
Wind
Keywords
Lateral Load Resisting System
Shear Walls
CSA 086
Internal-Perforated-Steel-Plates
Self-drilling Dowels
Language
English
Research Status
Complete
Summary
Cross-laminated timber (CLT) constitutes a promising solution for numerous structural applications, including for large and tall residential and commercial buildings. The prospect of building larger timber structures creates some structural challenges, amongst them being that lateral forces created by high winds and strong earthquakes are higher and create higher demands of “holddowns”. The Canadian Standard for Engineering Design in Wood CSA-O86 does not (yet) provide any specific procedures to estimate the resistance of mass-timber Lateral Load Resisting Systems (LLRS) nor how to facilitate the targeted kinematic mode, especially for multi-panel walls where the LLRS behaviour is a function of connection behaviour. The project investigated the viability of internal-perforated-steel-plates (ISP) with self-drilling dowels as high-performance connections for CLT LLRS. The project objective was to contribute towards the development of reliable design guidance for ISP connections. To achieve this objective, first at the material level, the properties of the used steel-plates and dowels were verified. Then, at the component level, the performance of shear connections and hold-downs were investigated by performing quasi-static monotonic and reversed cyclic tests. The most significant finding of the component level tests was the proof that it is possible to control the strength, stiffness, and ductility only through the IPSP and avoid bending of the SDD or crushing of the wood. Furthermore, the length of the steel perforations had a large impact on the performance with the steel-plates with the long slots (Type-D and Type-E) exhibiting lower strength and stiffness. For the hold-down tests, the same perforation geometry as for the shear-connection tests was chosen. As already determined in the shear-connection tests, the hold-down specimens with the short perforation slots resulted in the strongest and stiffest connection. The results from this project will be used to design and test CLT shear walls with ISP connections.
Online Access
Free
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Performance of Cross-Laminated Timber as a Residential Building Material Subject to Tornado Events

https://research.thinkwood.com/en/permalink/catalogue2523
Year of Publication
2020
Topic
Wind
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Walls
Wood Building Systems

An Exploration into Tornado Resistant Residential CLT Structures

https://research.thinkwood.com/en/permalink/catalogue2111
Year of Publication
2019
Topic
Wind
Design and Systems
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems

Development of a Ready-to- Assemble Tornado Shelter from Cross-Laminated Timber (CLT): Impact and Wind Pressure Testing

https://research.thinkwood.com/en/permalink/catalogue2099
Year of Publication
2019
Topic
Design and Systems
Wind
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Falk, Robert
Bridwell, James
Williamson, Tom
Black, Todd
Organization
Forest Products Laboratory
Year of Publication
2019
Country of Publication
United States
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Design and Systems
Wind
Keywords
Tornado
Residential
Lateral Load
Uplift Test
Language
English
Research Status
Complete
Summary
The development and use of tornado shelters have helped reduce loss of human life associated with extreme weather events. Currently, the majority of shelters are built from either steel or concrete. The development of the crosslaminated timber (CLT) industry in the United States has provided an ideal wood product to resist the debris impact...
Online Access
Free
Resource Link
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Wind and Earthquake Design Framework for Tall Wood-Concrete Hybrid System

https://research.thinkwood.com/en/permalink/catalogue2143
Year of Publication
2019
Topic
Seismic
Wind
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Tesfamariam, Solomon
Bezabeh, Matiyas
Skandalos, Konstantinos
Martinez, Edel
Dires, Selamawit
Bitsuamlak, Girma
Goda, Katsuichiro
Year of Publication
2019
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Seismic
Wind
Keywords
Tall Wood
Seismic design factors
Wind tunnel test
Ductility Factors
Timber-reinforced concrete
Force Modification Factors
Probabilistic Model
Wind Load
Overstrength seismic force
Language
English
Research Status
Complete
Notes
DOI 10.14288/1.0380777
Summary
Advancement in engineered wood products altered the existing building height limitations and enhanced wooden structural members that are available on the market. These coupled with the need for a sustainable and green solution to address the ever-growing urbanization demand, avails wood as possible candidate for primary structural material in the construction industry. To this end, several researches carried out in the past decade to come up with sound structural solutions using a timber based structural system. Green and Karsh (2012) introduced the FFTT system; Tesfamariam et al. (2015) developed force-based design guideline for steel infilled with CLT shear walls, and SOM (2013) introduced the concrete jointed mass timber hybrid structural concepts. In this research, the basic structural concepts proposed by SOM (2013) is adopted. The objective of this research is to develop a wind and earthquake design guideline for concrete jointed tall mass timber buildings in scope from 10- to 40-storey office or residential buildings. The specific objective of this research is as follow: Wind serviceability design guideline for hybrid mass-timber structures. Calibration of design wind load factors for the serviceability wind design of hybrid tall mass timber structures. Guidelines to perform probabilistic modeling, reliability assessment, and wind load factor calibration. Overstrength related modification factor Ro and ductility related modification factor Rd for future implementation in the NBCC. Force-based design guideline following the capacity based design principles.
Online Access
Free
Resource Link
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Dynamical Properties of a Large Glulam Truss for a Tall Timber Building

https://research.thinkwood.com/en/permalink/catalogue2036
Year of Publication
2018
Topic
Wind
Mechanical Properties
Connections
Material
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Trusses

Feasibility Study of a Wood-Concrete Hybrid Super Tall Building and Optimization of its Wind-Induced Behaviour

https://research.thinkwood.com/en/permalink/catalogue1902
Year of Publication
2018
Topic
Design and Systems
Wind
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Floors
Frames
Walls
Shafts and Chases

38 records – page 1 of 4.