具有负刚度特征的半周摩擦阻尼装置的开发及应用研究

o achieve satisfactory results of shock absorption, the energy dissipation devices are usually placed on multiple floors of the building, which wastes a lot of structural space. Therefore, a half-cycle friction damping device with negative stiffness characteristic, which only needs to be arranged at the bottom floors to dissipate energy and reduce shock, is proposed in this work. Due to the simple structure, large stroke and stable mechanical properties of this device, it can be readily used in engineering. The expected hysteretic model is obtained by combining with the performance test. The shock absorption simulation analysis of single degree of freedom and frame structure are realized in this work. The results indicate that the half-cycle friction damping device can increase structural damping, extended structure cycle and then control the seismic response of the structure.