Franke, Steffen; Franke, Bettina; Frohnmüller, Jens (1 December 2022). Durability of timber connections In: COST Action CA 20139, Holistic design of taller timber buildings (HELEN). Gothenburg. 1.12.2022.
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Franke Frohnmüller Franke 2022 Durability of timber connections.pdf Restricted to registered users only Download (289kB) | Request a copy |
In contrary to steel or concrete buildings, the performance of a timber building is significantly defined by the stiffness of the connections. The design of those connections for residual buildings has been covered quite comprehensively by COST Action FP1402, WG3 with a focus on functionality, strength, and stiffness. Comparing tall timber buildings with residual timber buildings, however, there are – higher loads (vertical and lateral). – higher necessity looking on fatigue. – more inspection and maintenance, see COST Action FP1101. – limitations regarding the design, because not all materials and construction methods (e.g., ceilings made of timber beams) are suitable. – further design criteria, such as a possible consideration of deformations from compression perpendicular to the grain, see Windeck and Blass (2022). – critical design points which are not common to consider, such as the deformation resulting from different settlements of concrete shafts and timber-constructions. – newly arising questions with an increasing size and number of reinforcements such as shown by Danzer at al. (2020), who found a reduction of the load-carrying capacity of about 65 % - 83 % due to the restraining effect with an increasing number of reinforcements and size. Those aspects open new questions regarding the durability of tall timber buildings.
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