论文部分内容阅读
为了避免和减轻由过大的隔震层位移引起的损害,井上等人提出了一种控制隔震层位移的新型控制装置-连接摩擦阻尼器。介绍了阻尼器的构造和工作原理,通过对阻尼器进行单体试验和振动台试验,研究阻尼器的性能、控制效果以及对上部结构振动特性的影响。试验结果表明:连接型摩擦阻尼器具有完全弹塑形恢复力特性,对隔震层最大位移制控效果明显,同时也会略微放大上部使结构加速度。由于连接型摩擦阻尼器连接后隔震层刚度增加,使得上部结构的高频振动成分增加。但是,在连接型摩擦阻尼器连接的瞬间,并未出现加速度急剧增加的问题。
In order to avoid and mitigate the damage caused by the excessive displacement of the isolation layer, Inoue et al proposed a new type of control device to control the displacement of the isolation layer-the friction damper. The structure and working principle of the damper are introduced. The damper’s performance and control effect as well as its influence on the vibration characteristics of the superstructure are studied through the single-unit test and the shaking table test. The experimental results show that the friction damper with a complete elasto-plastic restoring force possesses obvious effect on the maximum displacement of the isolation layer and slightly enlarges the acceleration of the upper part. Due to the increase of the stiffness of the isolation layer after the connection-type friction damper is connected, the high-frequency vibration component of the superstructure is increased. However, at the moment when the connection-type frictional damper is connected, there is no problem that the acceleration increases sharply.