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Field Testing on Innovative Timber Structures

https://research.thinkwood.com/en/permalink/catalogue671
Year of Publication
2014
Topic
Design and Systems
Material
LVL (Laminated Veneer Lumber)
Application
Floors
Frames
Author
Leyder, Claude
Wanninger, Flavio
Frangi, Andrea
Year of Publication
2014
Country of Publication
Canada
Format
Conference Paper
Material
LVL (Laminated Veneer Lumber)
Application
Floors
Frames
Topic
Design and Systems
Keywords
Beech
Post-Tensioned
Office Buildings
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 10-14, 2014, Quebec City, Canada
Summary
In timber research, a main objective is the development and promotion of innovative and efficient timber structures. Therefore a pilot building, named ETH House of Natural Resources, has been designed, which uses two innovative structural systems, a post-tensioned timber frame and a composite beech LVL concrete floor. The building will be used as an office building for the Laboratory of Hydraulics, Hydrology and Glaciology from ETH Zürich and will serve as a showcase building of a sustainable and reliable timber construction for students and researchers, among others.
Online Access
Free
Resource Link
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Fire Tests on Loaded Cross-Laminated Timber Wall and Floor Elements

https://research.thinkwood.com/en/permalink/catalogue254
Year of Publication
2014
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Author
Klippel, Michael
Leyder, Claude
Frangi, Andrea
Fontana, Mario
Publisher
International Association For Fire Safety Science
Year of Publication
2014
Country of Publication
Netherlands
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Topic
Fire
Keywords
Charring Rate
Canada
Panels
Fire Resistance
Language
English
Conference
Fire Safety Science International Symposium
Research Status
Complete
Notes
February 9-14, 2014, Christchurch, New Zealand
Summary
Cross-laminated timber (CLT) panels are relatively new engineered wood products that can be used as load bearing walls, floors and roof elements in innovative and high quality modern timber structures. The fire behavior of cross-laminated timber panels requires careful evaluation to allow the expansion of CLT elements usage in buildings. A University of British Columbia study has been conducted at the Trees and Timber Institute CNR-IVALSA in San Michele all’Adige, Italy to experimentally evaluate the fire performance of Canadian CLT panels. In total, ten loaded fire tests were performed using standard fire curves (ULC/ASTM and ISO) to study the influence of different cross-section layups on the fire resistance of floor and wall elements and to investigate the influence of different anchors on the fire behavior of wall elements. This paper presents the main results of the experimental analyses and discusses in particular the charring rate, one of the main parameters in fire design.
Online Access
Free
Resource Link
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Modal Vibration Testing of an Innovative Timber Structure

https://research.thinkwood.com/en/permalink/catalogue1494
Year of Publication
2016
Topic
Acoustics and Vibration
Material
LVL (Laminated Veneer Lumber)
Timber-Concrete Composite
Application
Hybrid Building Systems
Author
Leyder, Claude
Frangi, Andrea
Chatzi, Eleni
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
LVL (Laminated Veneer Lumber)
Timber-Concrete Composite
Application
Hybrid Building Systems
Topic
Acoustics and Vibration
Keywords
Beech
Post-Tensioned
Modal Vibration Tests
Eigenfrequencies
Damping Ratios
Mode Shapes
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 177-185
Summary
This research paper deals with the evaluation of the dynamic modal vibration tests conducted on an innovative timber structure, the ETH House of Natural Resources. The building serves as a demonstrator of several innovative structural systems and technologies relating to timber. The main load-bearing structure comprises a posttensioned timber frame, which was subjected to modal vibration tests, firstly in the laboratory and, subsequently on the construction site. In this paper, the modal characteristics (eigenfrequencies, damping ratios and mode shapes), obtained from the laboratory testing campaign are presented. The modal vibration data is evaluated using polynomial and subspace identification techniques. The obtained results reveal that the structure exhibits pure translational, beam and column modes, as well as mixed beam-column modes. The bottom connection of the columns delivers significant influence on the modal characteristics, whereas the level of post-tensioning force yields no substantial influence in the modal characteristics obtained from low amplitude modal vibration tests.
Online Access
Free
Resource Link
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