Method of replacing seismic isolation device, flange position adjustment mechanism of seismic isolation device, and flange position adjustment device of seismic isolation device

摘要

PROBLEM TO BE SOLVED: To improve construction performance.SOLUTION: An exchange method of a seismic isolator has: a removal process for removing an existing seismic isolator by jacking up an upper structure; a first bolt-fastening process for fixing one flange out of an upper flange and a lower flange to one of the upper structure and a lower structure by final-fastening either of an upper bolt or a lower bolt by installing a new seismic isolator; a position adjustment process for position-adjusting the other flange by making an engagement member engaged with a bolt hole of the other flange and by pushing or pulling the engagement member with the upper structure and the lower structure as pivots; a second bolt-fastening process for temporarily fixing the other flange to the other of the upper structure or the lower structure by temporarily fastening the other of the upper bolt or the lower bo and a third bolt-fastening process for final-fastening the other of the upper bolt or the lower bolt by jacking down the upper structure.SELECTED DRAWING: Figure 5