Study of the Behaviour of Moment-Resisting Connection of Softwood Timber Elements

• Autorzy: Fabriciuss Janis , Ozola Lilita

Identyfikatory

DOI

10.29227/IM-2024-02-25

Warianty tytułu

PL

Badanie zachowania się połączeń elementów drewnianych z drewna miękkiego odpornych na moment skręcający

• Konferencja: 9th World Multidisciplinary Congress on Civil Engineering, Architecture, and Urban Planning - WMCCAU 2024 : 2-6.09.2024
• Języki publikacji: EN

Abstrakty

EN

Timber moment-resisting connections present opportunities for streamlined architectural design using timber portal frames with rigid knee junctions, enabling open floor plans by eliminating the need for additional bracing or interior columns. This flexibility empowers architects to craft more versatile floor layouts, enhancing spatial aesthetics and functionality. However, moment-resisting connections between timber members, especially crossing ones, present several challenges – complex design, demanding meticulous detailing and precise fabrication and also lack of a detail design format in codes. One of the biggest disadvantages of timber moment-resisting connections made by steel dowels is development of relative rotation due to the timber as well as dowel’s elastic-plastic behaviour, i.e., such connection may be referred to a semi-rigid group. The main objective of this study is to conduct a detailed investigation of semi-rigid timber connections by performing experimental tests of L-shape models, including examination of timber strength and stiffness properties. The rotational displacement between joined members was determined using measured distances between surface points by Particle Image Velocimetry (PIV). The experimental results are compared with an equivalent linear calculation model. Different connection models are treated by Dlubal RFEM software tools using experimentally obtained embedment stiffness variables. It is found that the linear behavior of the semi-rigid connection is up to approximately 40% of the connection's design capacity, after which distinctly nonlinear force-deformation relationship develops.

Słowa kluczowe

EN

timber connection; modulus of elasticity; particle image velocimetry; semi-rigid; performance-based design; FEM

PL

połączenie drewna; moduł sprężystości; prędkościomierz obrazu cząstek; półsztywny; projektowanie oparte na wydajności; MES

• Wydawca: Polskie Towarzystwo Przeróbki Kopalin
• Czasopismo: Inżynieria Mineralna
• Rocznik: 2024
• Tom: Vol. 1, no. 2
• Strony: art. no. 25
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr., zdj.

Twórcy

autor

Fabriciuss Janis

• Institute of Civil Engineering and Wood Processing, Faculty of Forest and Environmental Sciences, Latvia University of Life Sciences and Technologies, 19 Akademijas Str, Jelgava, LV-3001, Latvia

• https://orcid.org/0009-0005-6385-4876

autor

Ozola Lilita

• Institute of Civil Engineering and Wood Processing, Faculty of Forest and Environmental Sciences, Latvia University of Life Sciences and Technologies, 19 Akademijas Str, Jelgava, LV-3001, Latvia

• https://orcid.org/0000-0003-3766-6706

Bibliografia

• 1. Basterrechea-Arévalo, M., M. Schweigler, R. Lemaître, un T. K. Bader, "Numerical modelling of momenttransmitting timber connections" (Engineering Structures, 2023), doi: 10.1016/j.engstruct.2023.116923.
• 2. Guedes, Taiane Oliveira, Rodrigo Allan Pereira, Fernando Pujaico Rivieira, un José Reinaldo Moreira da Silva " Particle image velocimetry for estimating the young’s modulus of wood specimens" (Cerne, 2019), doi: 10.1590/01047760201925022633.
• 3. Kawahara, Ken, Kosei Ando, un Yusuke Taniguchi. "Time dependence of Poisson’s effect in wood IV: influence of grain angle" (Journal of Wood Science, 2015), doi: 10.1007/S10086-015-1477-8/FIGURES/14.
• 4. Mehra, Sameer, Conan O’Ceallaigh, Adeayo Sotayo, Zhongwei Guan, un Annette M. Harte. "Experimental characterisation of the moment-rotation behaviour of beam-beam connections using compressed wood connectors " (Engineering Structures, 2021), doi: 10.1016/j.engstruct.2021.113132.
• 5. J. Porteous and A. Kermani. Structural timber design to Eurocode 5. (Chichester, West Sussex, UK: John Wiley & Sons Inc., 2013), 624 p.
• 6. H.J. Blaß, P. Aune, B.S. Choo, R. Görlacher, D.R. Griffiths, B.O. Hilson, P. Racher, G. Steck Timber Engineering. Step 1. (Netherlands: Centrum Hout, 1995)
• 7. European committee for standardization, EN 338:2021 Structural timber – Strength classes, (Avenue Marnix 17, B-1000 Brussels, 2016).
• 8. European committee for standardization, EN 408:2010+A1:2012 – Timber structures - Structural timber and glued laminated timber - Determination of some physical and mechanical properties,(Avenue Marnix 17, B-1000 Brussels, 2012).
• 9. European committee for standardization, EN 14358:2016 – Timber structures - Calculation and verification of characteristic values, (Avenue Marnix 17, B-1000 Brussels, 2016).

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki i promocja sportu (2025).