Experimental static and seismic behaviour of glulam beam-to-column connection with screwed-in threaded rod joints

Abstract

To evaluate the static and seismic behaviour of glulam beam-to-column connections with screwed-in threaded rods, nine specimens grouped in three were tested under both monotonic and reversed cyclic loads. The failure modes, moment resistance, initial rotation stiffness, ductility, and energy dissipation capacity of the developed connections were investigated. The results indicated that the developed beam-to-column connections showed superior structural performance. Furthermore, with the introduction of a steel bracket, the hybrid screwed-in threaded rod connection features larger stiffness, higher load-carrying capacity, remarkable ductility, and better energy dissipation capacity. The main failure modes included the yielding of steel brackets, as well as the yielding or rupture of the threaded rods, which indicated a ductile behaviour. The connection specimens with steel columns showed larger stiffness than those with glulam columns, which is reasonable for the bigger compressive deformation of glulam columns.

Aesthetic Preference of Timber Joints in Architectural Products

“…Studies [68,69] indicate that timber structures exhibit lower levels of embodied carbon compared to materials like concrete or steel. However, a key challenge in timber construction lies in the design and implementation of timber joints, crucial for ensuring the structural integrity and stability of the overall timber structure [59]. Consequently, the use of timber joints has gained significance in the construction of multistorey and long-span structures, contributing to resistance, ductility, and energy dissipation within the overall framework.…”

“…The historical use of timber in construction has emphasised the significance of designing and implementing these joints. As highlighted by Yang et al [59], timber joints provide strength and stability to the overall building, evolving over time under the influence of regional traditions, material, and technological advancements, and the need for efficient construction methods [60]. Traditional timber joints, such as mortise and tenon joints, have a rich history in Asian countries, preserving the original beauty and aesthetics of timber without relying on steel fasteners [61].…”

Numerical Analysis on Seismic Behaviour of Timber Frame Structure With Hybrid Screwed-in Rod Connections

“…In order to verify the accuracy of the numerical model, the simulation hysteresis curve of the connection model is compared with the experimental hysteresis curve. The hybrid connection test results are provided by the literatures [9]. Figure 4 and Figure 5 show the simulated result.…”