Seismic Performance Evaluation of Traditional Chinese Mortise-Tenon Frame Infilled with Friction Dissipative Window Frame

Abstract

ABSTRACT This paper presents a new form of window frame that employs a friction dissipative connection. The design is informed by a structural analysis of the sill window in traditional wooden structures and inspired by friction dissipative mechanisms. By considering the frictional wear of the friction block, a more accurate formula for calculating the frictional torque is derived and its accuracy is verified. Additionally, a finite element model of the sill window-wooden frame system is established and verified using experimental data. Then a further finite element model of the sill window-wooden frame system with the friction dissipative window frame is established and analyzed, and the effectiveness of the reinforcement scheme of the friction dissipative connection is verified. The analysis shows that compared to the sill window-wooden frame system, the load-carrying capacity and energy dissipation of the sill window-wooden frame reinforced with the friction dissipative window frame are significantly improved. When the bolt pre-tightening force is 100 kN, the peak load and stiffness of the sill window-wooden frame system reinforced with the friction energy dissipation window frame are increased by 2.7 and 2.57 times, respectively, compared to the sill window-wooden frame, which can effectively prevent the seismic damage of ancient wooden structures.