JPH0254933U

JPH0254933U -

Info

Publication number: JPH0254933U
Application number: JP13334588U
Authority: JP
Priority date: 1988-10-14
Filing date: 1988-10-14
Publication date: 1990-04-20

Description

[Brief explanation of the drawing]

第１図イは本考案の一実施例を示す縦断面図、
第１図ロは横変位したときの状態を示す同断面図
、第２図と第３図は他の実施例を示す縦断面図、
第４図は従来の免震装置の縦断面図である。１……ゴム層、２……鋼板、２ａ……延設部、
２ｄ，２ｅ……減衰用隆起部、３……孔、４……
貫通孔、６……弾性支持体、７……弾塑性体、８
，９……上下端板、１０……構造物、１１……基
礎。 FIG. 1A is a vertical sectional view showing an embodiment of the present invention;
FIG. 1B is a sectional view of the same showing the state when it is laterally displaced, FIGS. 2 and 3 are longitudinal sectional views showing other embodiments,
FIG. 4 is a longitudinal sectional view of a conventional seismic isolation device. 1... Rubber layer, 2... Steel plate, 2a... Extension part,
2d, 2e... damping ridge, 3... hole, 4...
Through hole, 6... Elastic support body, 7... Elastoplastic body, 8
, 9... Upper and lower end plates, 10... Structure, 11... Foundation.

Claims

[Claims for Utility Model Registration] (1) A plurality of rubber layers and steel plates are alternately bonded and laminated to form an elastic support, and a through hole extending in the axial direction of the elastic support has an elastic support. A plastic body is accommodated, the elastic plastic body and the elastic support body are clamped between an upper end plate and a lower end plate, and this is inserted between a structure and a support part that supports the structure. In the seismic isolation device, the elastoplastic body is made of a viscous body, and the steel plate is further formed with an extension portion that extends the inner circumferential surface of the steel plate to the inside of the through hole. A seismic isolation device. (2) The seismic isolation device according to claim 1, wherein the extension portion of the steel plate is bent to form a damping protuberance.