Shaking table tests of mortise-tenon joints of a traditional Chuan-Dou wood structure attached with viscoelastic dampers
Gao Yonglin1, 2, Tao Zhong1, 2, Ye Liaoyuan2, 3, Yang Miao1, 2, Su Hexian1, 2, Yu Wenzheng1, 2
1. Kunming University of Science and Technology, Kunming 650500, China; 2.Earthquake Engineering Institute, Kunming 650500, China; 3.Yunnan Normal University, Kunming650500, China
Abstract：Shaking table tests were carried out for a 3.8m×3.6m×3.9m (length×width×height) full-scale two-storey Chinese traditional wood structure attached with viscoelastic dampers. To study the seismic performance of Chinese traditional wood structure with and without viscoelastic dampers, they were tested under the peak ground acceleration (PGA) of 0.07g and 0.4g, respectively. The experimental results show that after attaching the viscoelastic dampers, the stiffness of mortise-tenon joints can be greatly increased so that rotation capability of the semi-rigid joints can be decreased, and the deformation restoring capacity of the structure model can be greatly enhanced. After experiencing multiple repeated earthquakes, there was no obvious tilt damages in the structure model even for 0.95g PGA. Shock absorption of mortise-tenon joints at the top of columns of the first floor firstly came into play. The dynamic amplification factor may decrease with the increase of the input seismic excitation. Due to the non-uniform distribution of mass and stiffness in two directions of structure model, the dynamic amplification factors in X and Y directions of the structure model were different, since the dynamic amplification factors in X and Y directions may vary in the range of 1.2519~0.7775 and 1.8779~1.1152, respectively. Mortise-tenon joints of structure model with attached viscoelastic dampers, the purposes of decreasing the story drift in small earthquakes and enhancing the deformation restoring capability of joints in strong earthquakes can be realized.
高永林，陶忠，叶燎原，杨淼，苏何先，余文正. 传统穿斗木结构榫卯节点附加黏弹性阻尼器振动台试验[J]. 土木工程学报, 2016, 49(2): 59-68.
Gao Yonglin, Tao Zhong, Ye Liaoyuan, Yang Miao, Su Hexian, Yu Wenzheng. Shaking table tests of mortise-tenon joints of a traditional Chuan-Dou wood structure attached with viscoelastic dampers. 土木工程学报, 2016, 49(2): 59-68.
