具有负刚度特征的半周摩擦阻尼装置的开发及应用研究
首发时间:2019-12-18
摘要:在消能减震措施中,为达到满意的减震效果,需在建筑结构的多个楼层布置耗能装置,占用了较多的建筑空间,为此提出仅需在底部楼层布置耗能装置的负刚度阻尼消能减震技术方案。为此提出仅需在底部楼层布置耗能装置的负刚度阻尼消能减震技术方案。通过性能试验验证了该装置能够实现预期的滞回模型,进行了单自由度体系和框架结构的减震模拟分析,结果表明采用半周摩擦阻尼装置进行减震可以增大结构阻尼、延长结构周期、对结构地震响应起到理想的控制效果。
关键词: 减震 负刚度装置 半周摩擦阻尼装置 性能试验 数值模拟
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Development and application of half-cycle friction damping device with negative stiffness characteristic
Abstract:To 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.
Keywords: shock absorption negative stiffness device half-cycle friction damping device performance test numerical simulation
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