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<p>The existing knowledge regarding failure mechanisms and theoretical models for mortise-tenon (M-T) joints with wooden pegs under seismic loading is insufficient. Most investigations on M-T joints focus on squeezing and friction between tenon and mortise, with limited consideration the damage at the peg hole. This paper introduces low-cyclic reversed loading tests alongside theoretical analyses of M-T joints with wooden pegs. The effects of the peg and tenon height on seismic performance parameters, including load-bearing capacity, stiffness, ductility and energy dissipation abilities were examined. The findings indicate significant differences in the behavior of M-T joints with and without wooden pegs under cyclic loading. Specifically, a decrease in tenon height and peg diameter may result in a shift from ductile failure due to tenon crushing to brittle failure associated with the peg hole. A theoretical hysteric model for the slipping, elastic, plastic, and post-failure stages of M-T joints with wooden pegs is subsequently derived, taking into account local compression effects and linear elastic fracture mechanics. A numerical simulation analysis was used to supplement and improve the test data. Compared with test and finite element analysis results, the proposed model accurately represents the failure behavior, including tenon crushing and peg hole cracking.</p>

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Seismic performance of moritse-tenon joints with wooden pegs in traditional timber residential buildings

  • 期刊论文

  • 发表日期：

    2026年4月25日

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  • Minghao Wu,
  • Yongjian Wang,
  • Zhaoqi Wu,
  • Shaofei Jiang,
  • Mengyu Lin

摘要

The existing knowledge regarding failure mechanisms and theoretical models for mortise-tenon (M-T) joints with wooden pegs under seismic loading is insufficient. Most investigations on M-T joints focus on squeezing and friction between tenon and mortise, with limited consideration the damage at the peg hole. This paper introduces low-cyclic reversed loading tests alongside theoretical analyses of M-T joints with wooden pegs. The effects of the peg and tenon height on seismic performance parameters, including load-bearing capacity, stiffness, ductility and energy dissipation abilities were examined. The findings indicate significant differences in the behavior of M-T joints with and without wooden pegs under cyclic loading. Specifically, a decrease in tenon height and peg diameter may result in a shift from ductile failure due to tenon crushing to brittle failure associated with the peg hole. A theoretical hysteric model for the slipping, elastic, plastic, and post-failure stages of M-T joints with wooden pegs is subsequently derived, taking into account local compression effects and linear elastic fracture mechanics. A numerical simulation analysis was used to supplement and improve the test data. Compared with test and finite element analysis results, the proposed model accurately represents the failure behavior, including tenon crushing and peg hole cracking.