Development of three-dimensional seismic isolation system realizing horizontal periodicity by air levitation
Development of three-dimensional seismic isolation system realizing horizontal periodicity by air levitation
复制标题
气浮实现水平周期性三维隔震系统的研制
DOI：
10.1299/transjsme.17-00509
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
M. Hayatsu
中科院分区：
文献类型：
--
作者：
M. Yasuda;E. Sato;M. Yamada;K. Kajiwara;M. Hayatsu
隔震技术的研究也是一个可以减少多少恢复力的问题。采用薄膜状橡胶与金属板多级堆叠来降低回复力的隔震橡胶取得了巨大成功。但恢复力仍存在，长周期地震防护措施不完善，竖向无防护。这项研究旨在通过进一步最小化各个方向的弹性，使三维隔震变得更加现实和更高的性能。所开发的三维隔震机构由隔离水平振动的空气悬浮机构和隔离垂直振动的弹簧连杆机构组成。利用E-defense振动台利用实尺度三维地震波对样机进行了激励实验。结果，证实了水平周期性和垂直自然周期为5秒的优异特性。 1Hz时的隔振性能在所有三个方向上均约为20dB，验证了传统设备所没有的高隔振性能。他们还得到了分析模型的支持。
Research on seismic isolation technology was also a question of how much restoring force can be reduced. The seismic isolation rubber with thin film like rubber and metal plates stacked in multiple stages to reduce the restoring force has achieved great success. However, there still exists restoring power, measures against long-period earthquakes are not perfect and vertically unprotected. This research is an effort to make three-dimensional seismic isolation more realistic with higher performance by further minimizing resilience in all directions. The developed three-dimensional seismic isolation mechanism consists of an air levitation mechanism that isolates horizontal vibration and a spring link mechanism that isolates vertical vibration. Excitation experiments of the prototype were carried out using real-scale three-dimensional seismic waves by the E-defense shaking table. As a result, excellent characteristics of horizontal periodicity and vertical natural period of 5 s were confirmed. The vibration isolation performance at 1 Hz was about 20 dB in all three directions, and the high isolation performance not found in conventional equipment was verified. They were also supported by analytical models.