Architectural Design & Research Institute Of South China University of Technology
发明人:
SHU Xuanwu
申请号：
US201415306449
公开号：
US2017044763(A1)
申请日:
2014.08.12
申请国别(地区):
美国
年份:
2017
代理人:
摘要：
The present invention discloses a stiffness-controllable earthquake-isolation support using negative gravity stiffness, which comprises an upper plate connected to an upper structure, a lower plate connected to a base structure at the bottom, K supporting columns arranged longitudinally between the upper and lower plates, with the supporting columns respectively connected with the upper and lower plates through a ball hinge, and L elastic connecting plates arranged laterally between the supporting columns, wherein K≧3, L≧N×K and N≧1. The mechanical motion mechanism of the present invention composed of the earthquake-isolation support, the supporting column and the ball hinges at both ends of the supporting column forms, under the action of gravity of the upper structure, the negative gravity stiffness that causes the upper structure to deviate from the equilibrium position, and the frame structure consisting of the connecting plates between the supporting columns forms the positive stiffness that resto
