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Probabilistic Analysis and Optimization of Roof Trusses
Linnaeus University, Faculty of Science and Engineering, School of Engineering. (TrÀbyggnadsteknik)ORCID iD: 0000-0002-6410-1017
2010 (English)In: Electronic Journal of Structural Engineering, ISSN 1443-9255, E-ISSN 1443-9255, Vol. 10, p. 74-89Article in journal (Refereed) Published
Abstract [en]

The influence of gap between wooden members and displaced nail-plates in roof trusses is investigated by means of probabilistic calculations and structural optimization. The employed mechanical model, using the finite element method, captures the non-linear behaviour of the nail-plate joints. The joint stiffness involves the size and location of the nail-plate, and the presence of contact or gap respectively between the wooden members. The analysis shows that even small initial gaps considerably increase the deflection of a roof truss. Misplaced nail-plates also effect the deflection negatively, but it is also shown that the deflection can be significantly decreased, and the utilization of nail-plates improved, by optimizing the nail-plate positions with respect to critical load cases and requirements.

Place, publisher, year, edition, pages
Melbourne: EJSE International Ltd , 2010. Vol. 10, p. 74-89
Keywords [en]
roof truss, wood, nail-plate, deflection, finite element method, modelling, optimization
National Category
Building Technologies
Research subject
Technology (byts ev till Engineering), Civil engineering
Identifiers
URN: urn:nbn:se:lnu:diva-8312OAI: oai:DiVA.org:lnu-8312DiVA, id: diva2:349972
Available from: 2010-09-09 Created: 2010-09-09 Last updated: 2019-10-17Bibliographically approved

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Olsson, Anders

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