Energy-dissipation capacity of a self-centering prefabricated coupled shear wall with open-close gap dampers

To improve the energy consumption of a self-oentering prefabricated coupled shear wall, an open-close gap damper (OCGD)was proposed, which could adapt to large deformations near the joints and help the structure achieve both good self-centering and energy-dissipation ability. Static tests were used to obtain the hysteresis curve of the damper, which verified the good energy dissipation ability of the proposed damper. Through simulation by Opensees, it is found that the proposed damper greatly improves the energy consumption of the structure without reducing its original self-centering ability. In addition, the energy was mainly dissipated by the open-close gap dampers. The energy consumption and damage of the structure itself are small, which creates the possibility of quick repair after the earthquake. © 2024 Chinese Vibration Engineering Society. All rights reserved.