Some structural design issues of the 14-storey timber framed building “Treet” in Norway

Abstract“Treet” is a 14-storey timber apartment building in Norway currently under construction. Ground works started in April 2014, and the residents can move in autumn of 2015. The building will be one of the tallest timber buildings in the world. The building consists of load-carrying glulam trusses and two intermediate strengthened levels. Prefabricated building modules are stacked on top of the concrete garage and on top of the strengthened levels. There is CLT in the elevator shaft, internal walls and balconies. But, CLT is not a part of the main load bearing system. Glass and metal sheeting protect the structural timber from rain and sun. The paper presents the design of the building as well as many of the investigations, considerations and discussions which took place during the design process. Finally some of the design verifications are presented.

[1]  David J. Ewins,et al.  Modal Testing: Theory, Practice, And Application , 2000 .

[2]  Kjell Arne Malo,et al.  Experimental evaluations of material damping in timber beams of structural dimensions , 2013, Wood Science and Technology.

[3]  Anders Jørstad.  Dynamic Testing and Numerical Modeling of Residential Building Modules: Dynamisk testing og numerisk modellering av byggmoduler , 2013 .

[4]  Kjell Arne Malo,et al.  Modified hysteretic damping model applied to Timoshenko timber beams , 2013 .

[5]  Thomas Reynolds,et al.  A 30 level cross laminated timber building system and analysis of the eurocode dynamic wind loads , 2012 .

[6]  Erik Serrano,et al.  Contact-free measurements and numerical analyses of the strain distribution in the joint area of steel-to-timber dowel joints , 2006, Holz als Roh- und Werkstoff.

[7]  Ingunn Utne.  Numerical Models for Dynamic Properties of a 14 Storey Timber Building , 2012 .

[8]  Kjell Arne Malo.  Fatigue Strength of Dowel Joints in Timber Structures , 2006 .

[9]  Wen-Shao Chang,et al.  Dynamic stiffness and damping of dowel-type connections for timber structures under service conditions , 2012 .

[10]  René Steiger,et al.  Assessment of resonance wood quality by comparing its physical and histological properties , 2008, Wood Science and Technology.

[11]  Erik Serrano,et al.  An experimental and numerical study of the effect of friction in single dowel joints , 2008, Holz als Roh- und Werkstoff.

[12]  Kjell Arne Malo,et al.  Prediction of material damping in timber floors, and subsequent evaluation of structural damping , 2015 .

[13]  B. Moor,et al.  Subspace identification for linear systems , 1996 .