Skip header and navigation

Refine Results By

10 records – page 1 of 1.

Blast Testing of Loaded Cross-Laminated Timber Structures

https://research.thinkwood.com/en/permalink/catalogue1234
Year of Publication
2018
Topic
Mechanical Properties
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Weaver, Mark
Newberry, Charles
Podesto, Lisa
O’Laughlin, Casey
Organization
Structures Congress
Publisher
American Society of Civil Engineers
Year of Publication
2018
Country of Publication
United States
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Mechanical Properties
Design and Systems
Keywords
Blast Tests
Airblast Loads
Axial Load
Panels
Load Distribution
Quasi-Static
Language
English
Conference
Structures Conference 2018
Research Status
Complete
Notes
April 19–21, 2018, Fort Worth, Texas
Summary
Results from a series of blast tests performed in October 2016 on three two-story, single-bay cross-laminated timber (CLT) structures demonstrated the ability of CLT construction to resist airblast loads in a predictable fashion. These tests were performed on structures without superimposed load to limit inertial resistance. Subsequently, a follow-on series of tests was performed to investigate the response of axially-loaded CLT construction. Panels damaged during the preceding test were removed and replaced. Axial load was applied using precast concrete blocks to simulate the loaded condition of a five-story building at the first-floor front panel of the structures. These test structures were exposed to two shots: the first was designed to keep the structures within their respective elastic ranges while the second was designed to push the structures beyond their elastic limits. Reflected pressure and peak deflections were recorded at the front panels of the test structures to document the two-way panel load distribution behavior under a dynamic load event and the clearing of the shock wave. Prior to conducting the blast tests, a small number of tests were performed on a load tree test apparatus to aid in test planning by investigating the post-peak response of individual CLT panels of various lengths to quasi-static out-of-plane and axial loads applied simultaneously. This paper provides an overview of the results obtained from both the quasi-static and blast tests of axially-loaded CLT. Additionally, the paper compares CLT structure, component, and connection response across the suite of data. Conclusions are offered to assist engineers in the design of load bearing CLT construction exposed to airblast loads.
Online Access
Payment Required
Resource Link
Less detail

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

Seismic Resistant Cross Laminated Timber Structures Using an Innovative Resilient Friction Damping System

https://research.thinkwood.com/en/permalink/catalogue1479
Year of Publication
2017
Topic
Connections
Seismic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Hybrid Building Systems
Author
Hashemi, Ashkan
Valadbeigi, Armin
Masoudnia, Reza
Zarnani, Pouyan
Year of Publication
2017
Country of Publication
New Zealand
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Hybrid Building Systems
Topic
Connections
Seismic
Mechanical Properties
Keywords
Resilient Slip Friction Joint
Energy Dissipation
Self-Centering
Hold-Down
Language
English
Conference
New Zealand Society for Earthquake Engineering Conference
Research Status
Complete
Notes
April 27-29, 2017, Wellington, New Zealand
Summary
Multi-storey timber structures are becoming progressively desirable owing to their aesthetic and environmental benefits and to the high strength to weight ratio of timber. A recent trend in timber building industry is toward cross laminated timber (CLT) panelized structures. The shake table tests within the SOFIE project have shown that the CLT buildings constructed with traditional methods can experience high damage especially at the connections which generally consist of hold-down brackets and shear connectors with mechanical fasteners such as nails or bolts. Thus, current construction methods are not recognised as reliable in seismic prone areas. The main objective of this project is to develop a new low damage structural concept using innovative resilient slip friction (RSF) damping devices. The component test results demonstrate the capacity of this novel joint for dissipating earthquake energy as well as self-centring to minimize the damage and the residual drift after a severe event. The application of RSF joints as holddown connectors for walls were investigated through numerical studies. Moreover, a core wall system comprised of cross laminated timber and RSF connectors is subjected to time-history earthquake simulations. The numerical results exhibit no residual displacement alongside a significant reduction in peak acceleration which can be attributed to significant amount of dissipated seismic energy over the RSF joints within the system.
Online Access
Free
Resource Link
Less detail

Cross Laminated Timber (CLT) Beams Loaded in Plane: Testing Stiffness and Shear Strength

https://research.thinkwood.com/en/permalink/catalogue2136
Year of Publication
2019
Topic
Mechanical Properties
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Beams

Behaviour of Cross-Laminated Timber Subjected to Blast Loading

https://research.thinkwood.com/en/permalink/catalogue2451
Year of Publication
2019
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Author
Poulin, Mathieu
Organization
University of Ottawa
Year of Publication
2019
Country of Publication
Canada
Format
Thesis
Material
CLT (Cross-Laminated Timber)
Topic
Mechanical Properties
Keywords
Blast Loading
Language
English
Research Status
Complete
Online Access
Free
Resource Link
Less detail

Fireproof Tests and Heat Conduction Analyses for Development of 2-Hour Fire Resistant Structures

https://research.thinkwood.com/en/permalink/catalogue1778
Year of Publication
2016
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Floors
Author
Kamikawa, Daisuke
Harada, Toshiro
Inada, Tatsuo
Kuratomi, Yoh
Shiozaki, Ikuo
Murata, Tadashi
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Floors
Topic
Fire
Keywords
Furnace Fire Tests
Calcium Silicate Boards
Gypsum
Fire Resistance
Thickness
Heat Conduction Analysis
Numerical Model
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 5437-5444
Summary
Small furnace fire tests were conducted on CLT cladded with calcium silicate boards, gypsum boards, and combinations of the two. The difference in fire resistance when using different board types, combinations, and thicknesses was demonstrated. Some cross-sectional configurations had enough 2-hour fire resistance performance...
Online Access
Free
Resource Link
Less detail

Salvaged Lumber for Structural Mass Timber Panels: Manufacturing and Testing

https://research.thinkwood.com/en/permalink/catalogue2470
Year of Publication
2020
Topic
Design and Systems
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Author
Arbelaez, Raphael E.
Schimleck, Laurence
Sinha, Arijit
Publisher
Society of Wood Science and Technology
Year of Publication
2020
Country of Publication
United States
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Topic
Design and Systems
Mechanical Properties
Keywords
Bending Moment
Salvaged Lumber
Stiffness
Moment Resistance
Shear Resistance
Wood Failure
Delamination
Language
English
Research Status
Complete
Series
Wood and Fiber Science
Online Access
Free
Resource Link
Less detail

Structural Analysis of In-Plane Loaded CLT Beams

https://research.thinkwood.com/en/permalink/catalogue1213
Year of Publication
2017
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Beams
Author
Jelec, Mario
Strukar, Kristina
Rajcic, Vlatka
Organization
University of Osijek
Year of Publication
2017
Country of Publication
Croatia
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Beams
Topic
Mechanical Properties
Keywords
In-Plane Loading
Shear Stress
Failure Modes
FE Analysis
Eurocode 5
Language
English
Research Status
Complete
Series
e-GFOS
ISSN
1847-8948
Summary
Cross laminated timber (CLT) is a versatile engineered timber product that is increasingly well-known and of global interest in several applications such as full size plane or linear timber elements. The aim of this study involves investigating the performance of CLT beams loaded in-plane by considering bending and shear stress analysis with a special emphasis on the in-plane shear behavior including the complex internal structure of CLT. Numerical analysis based on 3D-FE models was used and compared with two existing analytical approaches, namely representative volume sub element (method I) and composite beam theory (method II). The separate verification of bending and shear stresses including tree different shear failure modes was performed, and a good agreement was obtained. The main difference between the results relates to shear failure mode in the crossing areas between the orthogonally bonded lamellas in which the distribution of shear stresses tzx over the crossing areas per height of the CLT beam is not in accordance with the analytical assumptions. The presented analyses constitute the first attempt to contribute to the on-going review process of Eurocode 5 with respect to CLT beams loaded-in plane. Currently, regulations on designing these types of beams do not exist, and thus experimental and numerical investigations are planned in the future.
Online Access
Free
Resource Link
Less detail

In-Plane Loaded CLT Beams – Tests and Analysis of Element Lay-Up

https://research.thinkwood.com/en/permalink/catalogue2234
Year of Publication
2017
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Beams

Flexural Response of Glued Laminated (Glulam) Beams Subjected to Blast Loads

https://research.thinkwood.com/en/permalink/catalogue492
Year of Publication
2014
Topic
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Author
Lacroix, Daniel
Viau, Christian
Doudak, Ghasan
Year of Publication
2014
Country of Publication
Canada
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Application
Beams
Topic
Mechanical Properties
Keywords
Strain
Flexural Behaviour
Blast Loads
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 10-14, 2014, Quebec City, Canada
Summary
An extensive body of research is currently available on the behaviour of concrete and steel structures when subjected to blast threats, however, little to no details on how to address the design or retrofitting of wood structures are available. In this paper, preliminary results, both experimental and analytical, are presented on the flexural behaviour of glulam beams under high strain rates. A total of three 80 mm x 228 mm x 2,500 mm glulam beams with a clear span of 2,235 mm were subjected to simulated blast loads using a shock tube. The preliminary experimental results showed that a brash tension failure mode was observed on the tension laminate. It was also shown that a simplified SDOF model, using linear elastic resistance curves, was capable of predicting the failure displacement and level of damage with reasonable accuracy.
Online Access
Free
Resource Link
Less detail

10 records – page 1 of 1.