摘要
SMA-橡胶支座是一种由叠层橡胶垫和形状记忆合金(SMA)复合而成的新型隔震支座。阐明了SMA-橡胶支座的设计思路和工作机理,通过SMA-橡胶支座实物模型的伪动力试验,考察了支座的水平和竖向刚度、耗能能力和等效阻尼比,研究了位移幅值、加载频率、竖向荷载等参数对支座力学性能的影响。研究结果表明,SMA-橡胶支座工作性能稳定,耗能能力较强,是一种性能优良的新型隔震装置。
SMA-rubber bearing is a new type of seismic isolation device, which is composed of the laminated rubber pad and shape memory alloy （SMA） wires. The present paper outlines the working mechanism of such a new isolation device. Based on the pseudo-dynamic tests, the vertical stiffness, horizontal stiffness, energy dissipation and equivalent damping of the new isolator are studied. In addition, the effects of loading frequency, vertical pressure and amplitude of displacement on the mechanical behaviors of the new seismic isolation device are investigated in detail. The experimental results show that the SMA-rubber bearing has stable working property and excellent energy dissipation performance.
出处
《世界地震工程》
CSCD
北大核心
2005年第4期10-15,共6页
World Earthquake Engineering
基金
国家自然科学基金资助项目(50178006)
北京市自然科学基金项目(8042008)
北京市教委科技发展计划项目(Km200310005021)
关键词
SMA-橡胶支座
隔震
振动控制
伪动力试验
SMA-rubber bearing
seismic isolation
vibration control
pseudo-dynamic test
