Research Progress on Dowel-Type Connection Joints of Timber Structure
DOI:
https://doi.org/10.63313/AERpc.9105Keywords:
Timber structures, Dowel-type connections, Load-carrying capacityAbstract
Dowel-type connections (bolts, dowels, self-tapping screws, etc.) are the most widely used joint forms in modern timber structures, and their mechanical properties directly affect the load-carrying capacity and deformation behavior of the overall structure. This paper reviews the research progress of dowel-type timber connections from three aspects: load-carrying capacity calculation theory, numerical simulation methods, and innovative connection technologies with durability issues. In terms of load-carrying capacity theory, the Johansen yield model remains the core foundation of various design codes. Recent studies have extended this model to new engineered wood products such as cross-laminated timber and glued laminated bamboo, as well as to extreme conditions like fire. Regarding numerical simulation, the classical finite element method is the most mature approach, while the peridynamics method shows unique advantages in simulating wood cracking and fracture. For innovative technologies, self-tapping screw reinforcement and all-wood connections (dowel laminated timber, rotational welding, etc.) have become important development directions, but the water resistance of rotationally welded joints remains a critical issue. Current research still has gaps in the load redistribution mechanism of multiple-dowel connections and long-term performance under complex environmental conditions. This review aims to provide a reference for the design optimization and future research of dowel-type timber connections.
References
[1] JOHANSEN K W. Theory of timberconnections[ J] . International Asso-ciation of Bridge and Structural Engineering,1949,9:249-262.
[2] Mc Lain T.E. Thangjitham S.Bolted wood-joint yield model [J]. Journal of structural division, 1983,109(8):1820-1835.
[3] Soltis LA, Hubbard FK, Wilkinson TL. Bearing strength of bolted timber joints[J]. Journal of Structural Engineering. 1986, 112(9):2141-2154.
[4] J.Correal, L.Lopez. Mechanical properties of Colombian glued laminated bamboo, Modern bamboo structures - proceeding of the first modern bamboo structures.2007
[5] F.Ramirez, J.Correal. Dowel-Bearing Strength Behavior of Glued Laminated Guadua Bamboo[J].Journal of Materials in Civil Engineering. 2012, 24(11):1378-1387.
[6] J.Hover Load carruing capacity of multiple fastener steel to bamboo joints loaded parallel to the fibre direction.[D]. Delft University of Technology. 2017.
[7] Nakashima, S., Kitamori, A., Mori, T., Komatsu, K. (2014). Propose Alternative Design Criteria for Dowel Type Joint with CLT. In: Aicher, S., Reinhardt, HW., Garrecht, H. (eds) Materials and Joints in Timber Structures. RILEM Bookseries, vol 9. Springer, Dordrecht.
[8] Hill R. A theory of the yielding and plastic flow of anisotropic metals[J]. Proceedings of the Royal Society of London. Series A, 1948, 193(1033): 281-297.
[9] Hoffman O. The brittle strength of orthotropic materials[J]. Journal of Composite Materials, 1967, 1(2): 200-206.
[10] Audebert M, Dhima D, Taazount M, et al. Numerical and experimental analyses of multiple-dowel steel-to-timber joints in tension perpendicular to grain[J]. Engineering Structures, 2009, 31(10): 2357-2367.
[11] G.B.D.B. Boli, M-G. Tétreault, M. Oudjene, D. Coutellier, H. Naceur, M. Fafard,Numerical modelling of the structural response of a novel hybrid densified wood filled-aluminium tube dowel for structural timber connections,Composite Structures,Volume 334,2024,117987
[12] O‘Ceallaigh C, Harte A M, McGetrick P J. Numerical examination of the behaviour of dowel laminated timber elements utilising compressed wood dowels[C]//13th World Conference on Timber Engineering (WCTE 2023), Oslo, 2023: 216-224
[13] Fu H Y, He M J, Alhaddad W, et al. Numerical simulation and design method of dowel-type timber joints connecting laminated veneer lumber[J]. Structures, 2024: 106172.
[14] Ou J, Wang Y J, He M J, et al. Rotational performance of spliced glulam joints with slotted-in-steel-plates and dowel-type fasteners: Experimental investigation and analytical approach[J]. Journal of Building Engineering, 2024, 96: 110561.
[15] Gan X Y, Shu Z, Xie J W. A macroscopic peridynamic approach for glulam embedment failure simulation[J]. Journal of Building Engineering, 2025, 106: 112587.
[16] Qyteti K, la Manna S, Illana E, et al. Discrete element modeling of shear cell experiments with cohesive wooden spheres[J]. Particuology, 2025, 107: 300-312.
[17] Gubana A, et al. Simplified modelling of timber floors in stone masonry buildings using DEM[C]//Procedia Structural Integrity, 2023, 44: 1885-1892.
[18] Bejtka I, Blass H J. Self-tapping screws as reinforcements in connections with dowel-type fasteners[J]. Construction and Building Materials, 2002, 16(8): 461-469.
[19] He M J, Liu H F. Comparison of glulam post-to-beam connections reinforced by two different dowel-type fasteners[J]. Construction and Building Materials, 2015, 99: 99-108.
[20] Mora A, Popovski M, Lam F. Behaviour of small-scale glulam timber connections with slotted-in steel plates and dowel-type fasteners reinforced with self-tapping screws[J]. Construction and Building Materials, 2023, 408: 133760.
[21] Hossain A, Danzig I, Tannert T. Static and cyclic performance of shear connections with self-tapping screws for cross-laminated-timber panels[J]. ASCE Journal of Structural Engineering, 2017, 143(7).
[22] López S, et al. Adhesive- and metal-free assembly techniques for prefabricated multi-layer engineered wood products: A review on wooden connectors[J]. Forests, 2023, 14(2): 311.
[23] Mehra S, O’Ceallaigh C, Sotayo A, Guan Z, Harte A M. Experimental investigation of the moment-rotation behaviour of beam-column connections produced using compressed wood connectors[J]. Construction and Building Materials, 2022, 331: 127327.
[24] Leban J M, Mansouri H R, Pizzi A. Dependence of dowel welding on rotation rate[J]. Wood Science and Technology, 2008, 42(2): 121-130.
[25] Žulj I, Grbac I, Župčić I. Influence of air humidity variation on strength of rotary welded dowel joints of pinewood[J]. Drvna industrija, 2019, 70(3): 299-306..
[26] XU Y, KOVAL P S, DANILOV E V, et al. Quantitative Evaluation of Rotational Wood Welding Joint Strength Based on Regression of Data Sets[J]. BioResources, 2025, 20(2): 2933-2948.
[27] Moss P J, Buchanan A H, Nilsen T M, et al. Fire resistance of connections in timber structures[C]//Proceedings of the 6th International Conference on Structures in Fire (SiF’10). East Lansing, USA: Michigan State University, 2010: 8 pages.
[28] Audebert M, Dhima D, Taazount M. Experimental and numerical study of the fire behaviour of timber connections with steel dowels[J]. Engineering Structures, 2012, 41: 115-126.
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