Experimental study and numerical simulation analysis on seismic performance of continuous tenon joint in column-and-tie timber structure
Xue Jianyang1,2 Xu Dan1 Dai Wuqiang1
1. School of Civil Engineering, Xi’an University of Architecture& Technology, Xi’an 710055, China；
2. Key Lab of Structural Engineering and Earthquake Resistance of the Ministry of Education,
Xi’an University of Architecture & Technology, Xi’an 710055, China
Abstract：In order to study the seismic performance of continuous tenon joint in column-and-tie timber structure, the low cyclic loading test was carried out on the reduced-scale model. The moment-rotation hysteretic curves, skeleton curves, stiffness degradation laws, deformation and energy dissipation capacity of the joint were analyzed. The ABAQUS nonlinear finite element software was used to numerically analyze the mechanical behavior of continuous tenon joint. The simulated results are in good agreement with the experimental results. Research results show that the moment-rotation hysteresis curve of the joint has obvious pinching effect and becomes more obvious as the section height of Fang increases. The Fang slips during the loading process, and the slippage increases with the increasing rotation. The equivalent viscous damping coefficient of joint decreases as the section height of Fang increases. This type of joint has good ductility and greater bearing capacity. When the rotation angle reaches 0.22 rad, the Fang and mortise squeezes and large plastic deformation occurs without material damage. The stress on the transverse fang reaches its compressive strength, while the stress on the column along the grain has not reached its compressive strength.
