Research Progress on Dowel-Type Connection Joints of Timber Structure
Abstract
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.
Reference
Shichao Tian. (2026). Research Progress on Dowel-Type Connection Joints of Timber Structure. Advances in Engineering Research Possibilities and Challenges. https://doi.org/10.63313/aerpc.9105
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