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Numerical and experimental study of punched metal plate connection used for long-span pitched timber roof truss structure
Linnéuniversitetet, Institutionen för byggteknik (BY).ORCID-id: 0000-0003-0919-9485
Linnéuniversitetet, Institutionen för byggteknik (BY).ORCID-id: 0000-0001-5591-1045
Linnéuniversitetet, Institutionen för byggteknik (BY).
2018 (Engelska)Ingår i: WCTE 2018 - World Conference on Timber Engineering, World Conference on Timber Engineering (WCTE) , 2018Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

According to the harmonized European design code for timber structures, Eurocode 5, all pitched timber trusses used in load bearing roofs are designed as in-plane structures which means that a bracing system must be designed and put in place to prevent the out-of-plane instability. Results from numerical 3D stability analyses of the whole roof structure indicate that the out of plane stability is often the critical factor. Therefore, influence of stiffness properties of that system is studied in detail herein for long-span timber roofs. Focus is put on how the stiffness of the mechanical connections in the roof structure influences the load carrying capacity of the roof. The punched metal plate connections are modelled as non-coupled spring elements connecting the various beam elements in the timber truss respectively. The spring stiffness of the connections is derived from full-scale tests, which were made for all in- and out-of-plane degrees of freedom. To evaluate the experimental testing, a digital image correlation method was used. The results from the digital image correlation tests were compared with numerical simulations of the experimentally tested connections to check the potential of using the numerical simulations instead of the experimental testing to get the stiffness properties of various connections used in the whole roof stability analysis. Based on such analysis, punched metal plate fasteners showed to be an important contributor to the roof stability because of its relatively high stiffness in all six degrees of freedom.

Ort, förlag, år, upplaga, sidor
World Conference on Timber Engineering (WCTE) , 2018.
Nyckelord [en]
Timber truss structures, punched metal plate connections, numerical analysis, top chord buckling length
Nationell ämneskategori
Byggproduktion
Forskningsämne
Teknik, Byggteknik
Identifikatorer
URN: urn:nbn:se:kau:diva-74386Scopus ID: 2-s2.0-85058165120OAI: oai:DiVA.org:kau-74386DiVA, id: diva2:1343482
Konferens
WCTE 2018, World Conference on Timber Engineering, August 20-23, 2018, Seoul, Rep. of Korea
Tillgänglig från: 2019-08-16 Skapad: 2019-08-16 Senast uppdaterad: 2019-08-16

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Sejkot, PetrOrmarsson, SigurdurVessby, Johan

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