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The study aims to improve the seismic performance of traditional timber joints by introducing a novel sleeve design.

January 22, 2026BuildingsOpen Access

Parametric Study on an Integrated Sleeve Mortise-and-Tenon Steel–Timber Composite Beam–Column Joints

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Parametric study examines seismic performance of composite joints, suggesting optimal design parameters for enhanced durability.

The study aims to improve the seismic performance of traditional timber joints by introducing a novel sleeve design.
Conducted a parametric study on geometric parameters affecting joint performance.
Investigated sleeve thickness, length, bolt diameter, and stiffener dimensions.
Validated numerical models based on earlier experimental data.
Optimal sleeve thickness of 2–3 mm enhances performance and avoids yielding.
A sleeve length around 250 mm maximizes stiffness and achieves a high ductility coefficient.
Bolt diameters of 8–10 mm maintain stable hysteresis, while extreme sizes risk failure.
Stiffeners of 40 mm width and 2 mm thickness improve joint stiffness and stress distribution.

Wang et al. (2026) studied this question.

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