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Due to changes in the Swedish design code in 1994, timber construction is no longer limited to two-storey buildings. This change has created an attractive market for multi-storey timber structures. A Scandinavian glulam manufacturer, Moelven Töreboda, started in 2007 to develop a new beam and post building system in timber for multi-storey buildings with the Swedish commercial name, “trä8”. For “trä8”, the stabilising system is based on prefabricated wall panels placed at a few locations in the building. The stabilising elements consist of double sheathing of LVL Kerto-Q boards glued and screwed to a glulam frame. The panels are typically of 2.4 m width and continuous up to four storey height. The elements are fixed to the foundation by using special anchoring devices, which include threaded rods glued-in lengthwise in the timber member. In this paper, an introductory experimental study of the efficiency of this prefabricated wall panel used as a stabilising element is reported. Experimental results from full-scale testing of the racking performance of the stabilising element including the anchoring device are presented. The study, which focuses on the stiffness and the serviceability state, demonstrates that the presented wall panel elements, as part of a beam and post system for multi-storey buildings, have the potential to provide the necessary horizontal stability for the building. Godkänd; 2010; 20100609 (gabtlu) Pelar-balksystem för höga trähus |
