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Development of Glulam Column-RC Base Connection System for Multi-Stories Large-Scale Timber Building

https://research.thinkwood.com/en/permalink/catalogue1774
Year of Publication
2016
Topic
Connections
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
Columns
Wood Building Systems
Author
Sato, Nozomi
Uetsuki, Kazuki
Tanaka, Kei
Hagino, Tsuyoshi
Noda, Kenji
Satomura, Norihiko
Koshihara, Mikio
Inoue, Masafumi
Year of Publication
2016
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Application
Columns
Wood Building Systems
Topic
Connections
Mechanical Properties
Keywords
Loading Tests
Yield Moment
Multi-Storey
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 5393-5400
Summary
In Japan, the moment resistance connections of large-scale timber building are inefficiency in terms of time and economic, because connections and column base hardware are custom-made to obtain the required performance. To improve this problem, it is necessary to unify standardization of their connection. At first, in this study, we focused on column-base connection, the horizontal...
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Overstrength of Dowelled CLT Connections Under Monotonic and Cyclic Loading

https://research.thinkwood.com/en/permalink/catalogue1385
Year of Publication
2018
Topic
Connections
Mechanical Properties
Seismic
Material
CLT (Cross-Laminated Timber)
Author
Ottenhaus, Lisa-Mareike
Li, Minghao
Smith, Tobias
Quenneville, Pierre
Publisher
Springer Netherlands
Year of Publication
2018
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Topic
Connections
Mechanical Properties
Seismic
Keywords
Overstrength
Ductility
Three Point Bending Test
Fasteners
Yield Moment
Monotonic Loading
Cyclic Loading
Steel Dowels
Steel Plates
Research Status
Complete
Series
Bulletin of Earthquake Engineering
Summary
This paper presents an evaluation of overstrength based on an experimental study on dowelled connections in cross-laminated timber (CLT). Connection overstrength needs to be well understood in order to ensure that ductile system behaviour and energy dissipation can be achieved under seismic loading. Overstrength is defined as the difference between the code-based strength, using characteristic material strengths, and the 95th 4 percentile of the true strength distribution. Many aspects contribute to total connection overstrength, which makes its definition challenging. In this study, half-hole embedment tests were performed on CLT to establish embedment strength properties and three point bending tests were performed to determine the fastener yield moment. Different connection layouts, making use of mild steel dowels and an internal steel plate, were tested under monotonic and cyclic loading to evaluate theoretically determined overstrength values and study the influence of cyclic loading on overstrength. Experimental results were compared with strength predictions from code provisions and analytical models for ductile response under monotonic loading. It was found that cyclic loading does not significantly influence overstrength for connections that respond in a mixed-mode ductile way indicating that in future more expedient monotonic test campaigns could be used. This work also provides further experimental data and theoretical considerations necessary for the estimation of a generally applicable overstrength factor for dowelled CLT connections.
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