Shaking table test on Chuan-dou timber structures reinforced by assembled hoop of adjustable stiffness

Due to a lack of seismic design , traditional timber structures make their mortise and tenon joints susceptible to seismic action . To date, there are limited mortise and tenon joints strengthening techniques that are efficient and safe. This study proposed a novel assembled hoop of adjustable stiffness to enhance the seismic resilience of joints. To evaluate the efficacy of this reinforcing technique, two 1/2 scaled Chuan-dou timber structural models were designed, namely intact and reinforced models. The comparative analysis of these models was conducted by shaking table tests . Under a seismic intensity of 8.0, the dynamic amplification factor of the reinforced model decreased by 2.9 % compared to the intact model, and the maximum displacement response decreased by 27 %. This indicates that the seismic performance of the reinforced structure was restored to the same level as the intact structure. Additionally, the interstory drift was reduced from 1/33–1/35. This indicates that the proposed reinforcement technique is feasible and effective in the seismic performance and local joints energy dissipation for the Chuan-dou timber structure.