Thin jack and method of installing seismic isolation device or bearing device using this thin jack

摘要

PROBLEM TO BE SOLVED: To provide an installation method constituted so as to suppress deformation of a flange and a damage of supporting cement mortar after elastic deformation of pre-compression added to a seismic isolator or a bearing device when the seismic isolator or the bearing device is installed in a building.SOLUTION: An installation method of a seismic isolator consists of processes of: overlappingly arranging thin jacks 19 in the seismic isolator 11 or a bearing device 44 installed in an installation space 14 of a building; filling supporting cement mortar 24a by performing pre-compression of the seismic isolator 11 or the bearing device 44 by the thin jacks 19; and removing the thin jacks 19 after hardening of the supporting cement mortar 24a, in which a plurality of thin jacks 19 are arranged approximately at the same intervals toward the center of a flange 18 of the seismic isolator 11 or the bearing device 44, center filling areas 29 of the supporting cement mortar 24a are included at tips of the thin jacks 19, a plurality of outer peripheral filling areas 30 are included at an outer peripheral part, and communication filling areas 39 are included if necessary among them.SELECTED DRAWING: Figure 1