Experimental Study on Mechanical Properties of the Damaged Hoop Head Mortise-Tenon Joint

Abstract Damage is a common condition in ancient timber structures, whose influence on the mechanical properties of structures cannot be ignored. To study damaged hoop head mortise-tenon joint, four specimens with shrinkage gauge, including one intact joint specimen and three artificial simulated specimens, are designed, fabricated this paper by regarding global damage degree column axial force as variation parameters. The failure mode, hysteresis curve, skeleton ductility, energy dissipation capacity studied low-cyclic reversed loading tests. results show that pattern randomly manifested parallel-to-grain tensile cracking or vertical splitting beam tenon. When increases, two types more likely to appear simultaneously. has significant ultimate bending moment joints, 2.4% can lead decrease both. affect moment, joints. will increase, while ductility decrease.