Large-scale testing of low damage rocking Cross Laminated Timber (CLT) wall panels with friction dampers. (1st March 2020)

• Record Type: Journal Article
• Authors: Hashemi, Ashkan; Quenneville, Pierre
• Is Part Of: Engineering structures. Volume 206(2020)
• Publication Date: 2020-03-01
• Subjects: Rocking walls -- Cross Laminated Timber -- Friction -- Self-centring -- Low damage -- Resilience; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2020.110166
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: A new friction damper with self-centering characteristic is introduced. Results of the joint component tests confirmed the expected performance. A new concept for rocking Cross Laminated Timber (CLT) walls is introduced. A new shear key for rocking timber walls is presented. The results of full-scale test demonstrated a good seismic performance and self-centering capability. Abstract: The use of controlled ductile rocking shear walls with low damage connections can be an efficient alternative to traditional high damage design in order to mitigate the earthquake induced damage. Nowadays there is an increased demand for seismic low damage systems that can offer a high resistance level against the severe seismic events, allowing the buildings to be swiftly returned to service. This paper introduces a friction-based energy dissipation hold-down connection for rocking Cross Laminated Timber (CLT) structures with potential for re-centring behaviour. The results of component experimental tests on the device and results of large-scale tests on a rocking CLT wall with the proposed hold-down connectors have shown that the proposed system has the potential to be used in earthquake-resistant low- to mid-rise CLT structures. Furthermore, capacity prediction equations are provided for this system that are verified by comparing the analytical data with the experimental results.