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Non-uniformly distributed compression perpendicular to the grain in steel-CLT connections: Experimental and Numerical Analysis of bearing capacity and displacement behaviour
Linnaeus University, Faculty of Technology, Department of Building Technology.
Linnaeus University, Faculty of Technology, Department of Building Technology.
2019 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesisAlternative title
Non-uniformly distributed compressive loading perpendicular to the grain in steel-CLT connections : Experimental and Numerical Analysis of bearing capacity and displacement behaviour (English)
Abstract [en]

Previous studies have mainly focused on the behaviour of timber under uniformly distributed compression perpendicular to the grain (CPG) loads. However, there are many practical applications in which timber is loaded by non-uniformly distributed CPG loads. Different design and test codes like the Eurocode 5 (EC5), DIN 1052:2004, ASTM D143- 94 and EN-408:2010 only account for load configurations where timber is subjected to uniformly distributed loads. For specific uniformly distributed load (UDL) configurations the bearing capacity of timber (solid softwood timber or Glulam) in compression is adapted by using a load configuration factor (kc,90) according to EC5, the European code for design of timber structures. EC5 has no guidelines for cross-laminated timber (CLT) under UDL with the exception of the Austrian National Regulations for EC5.

In this work, an experimental and numerical study on the bearing capacity and displacement behaviour of CLT subjected to non-uniformly distributed loading (NuDL) is conducted on eight different load configurations. A steel-CLT connection in which the CLT is partially loaded is used in this study. Finite element modelling, performed using the commercial software Abaqus CAE is used as the numerical simulation of the experimental study and is validated by experimental results. Load configuration factors (kc,90) from experimental results are compared with values from the Swedish CLT handbook (KL-Trähandbok). The outcome of the study shows that load configuration factor for NuDL cases is higher than for UDL cases. Hence, for same load configurations a lower CPG strength is required in NuDL than in UDL. Moreover, numerical results feature overall good congruence with the elastic phase of the experiments and have the potential to augment experiments in further understanding other complex steel-CLT connections

Place, publisher, year, edition, pages
2019. , p. 134
Keywords [en]
Compression, Perpendicular to the Grain, Cross-Laminated Timber (CLT), Connection, Non-uniformly distributed, Finite element, Load configuration factor
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:lnu:diva-90646OAI: oai:DiVA.org:lnu-90646DiVA, id: diva2:1381367
External cooperation
Weland Aluminium AB
Subject / course
Byggteknik
Educational program
Structural Engineering, Master Programme, 60 credits
Supervisors
Examiners
Available from: 2019-12-20 Created: 2019-12-20 Last updated: 2019-12-20Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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  • nn-NB
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  • Other locale
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Output format
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  • text
  • asciidoc
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