论文部分内容阅读
本文评述了叠层橡胶支座的模拟动剪切实验.实验的目的是检验建筑物和基础间的隔振垫座抗?地震袭击的性能.支座的频率为0.2～0.9赫芝,在剪应变大约为50%的范围内经受了1000次以上的循环,阻尼值通过单独的扭转振动实验来核定.可以断定,这种支座适用于抗震建筑的基础隔振.阻尼约为2～3%的临界阻尼,在高速和低温的条件下阻尼有所增加.必须考虑用铅或钢的阻尼元件来防止有危害的水平振动的放大.
This article reviews the simulated dynamic shear test of laminated rubber bearings. The purpose of the experiment is to test the performance of the seismic isolation cushions between the building and the foundation against earthquakes. The frequency of the bearings is 0.2-0.9 Hertz in shear. In the range of about 50% strain, more than 1000 cycles were experienced, and the damping value was verified by a separate torsional vibration experiment. It can be concluded that this kind of bearing is suitable for the basic vibration isolation of seismic buildings. The damping is about 2 to 3%. With critical damping, damping is increased at high and low temperatures. The use of lead or steel damping elements must be considered to prevent the amplification of hazardous horizontal vibrations.