JPH049412U

JPH049412U -

Info

Publication number: JPH049412U
Application number: JP4947890U
Authority: JP
Priority date: 1990-05-11
Filing date: 1990-05-11
Publication date: 1992-01-28

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を橋桁の横方向の片
方の端について示す同横方向からの立面図、第２
図は第１図の一部切欠き側面図である。第３図は
第１図の〜線視図及び′〜′線断面の複
合図で、第３図の左半側が〜線視図、右半側
が′〜′線断面図、第４図は装置全体の横方
向からの概略的な立面図である。第５図は第１図
の実施例における高減衰ゴム支承の配置態様を示
す斜視図、第６図は第１図と同様な仕様で示す且
つ同様な方向からの本考案の変更例の立面図、第
７図は第６図の一部切欠き側面図である。第８図
は第６図の〜線視及び′〜′線断面の複
合図で、第８図の左半側が〜線視図、右半側
が′〜′線断面図、第９図は鉛直力支承につ
いての滑り対偶を例示する縦断面図、第１０図は
滑り対偶の他例を示す縦断面図である。Ａ……免震支承装置、１……高減衰ゴム支承、
２……鉛直力支承、２ａ，２ａ′，２ｂ，２ｂ′
……対偶素、３……高減衰ゴム支承の軸線の周り
の方向へ回り得る対偶、３ａ，３ｂ……同対偶の
対偶素、４……橋桁、５……上側シユー、６……
下側シユー。 Fig. 1 is an elevational view from the lateral direction showing one embodiment of the present invention at one lateral end of the bridge girder;
The figure is a partially cutaway side view of FIG. 1. Figure 3 is a composite view of the ~ line view and '~' line cross section of Figure 1. The left half of Figure 3 is the ~ line view, the right half is the '~' line cross section, and Figure 4 is the device. It is a schematic elevational view from the side of the whole. Fig. 5 is a perspective view showing the arrangement of the high damping rubber bearing in the embodiment shown in Fig. 1, and Fig. 6 is an elevational view of a modified example of the present invention shown in the same specifications as Fig. 1 and viewed from the same direction. 7 is a partially cutaway side view of FIG. 6. Figure 8 is a composite view of the ~ line and '~' line cross-section of Figure 6. The left half of Figure 8 is the ~ line view, the right half is the '~' line cross-sectional view, and Figure 9 is the vertical force FIG. 10 is a vertical sectional view showing an example of a sliding pair for a support. FIG. 10 is a vertical sectional view showing another example of a sliding pair. A... Seismic isolation bearing device, 1... High damping rubber bearing,
2... Vertical force support, 2a, 2a', 2b, 2b'
... Pair element, 3... Pair element that can rotate in the direction around the axis of the high damping rubber bearing, 3a, 3b... Pair element of the same pair, 4... Bridge girder, 5... Upper shoe, 6...
Lower side view.

Claims

[Claim for Utility Model Registration] At both ends of the bridge girder in the lateral direction, either the upper or lower shoe of the bridge girder has a groove shape with a vertical flange extending in the bridge axis direction, and the other one is placed in the groove shape. It has a convex shape that fits with a space between it and the flange of
A high damping rubber bearing whose axis is horizontally oriented is interposed between each flange of the grooved shoe and the convex shoe, and at least one end side of each high damping rubber bearing between each flange and the convex shoe. is connected to the flange or convex shoe of the portion opposite thereto by a pair that can rotate in the direction around the axis of the support, and between the grooved shoe and the convex shoe, there is a A bridge girder seismic isolation bearing device with interposed vertical force bearings in which the lower part of the parts serves as the supporting surface for the upper part. The bridge girder seismic isolation bearing device according to claim 1, wherein the vertical force bearing is a pair of spherical sliding pairs that cross a vertical line. The bridge girder seismic isolation bearing device according to claim 1, wherein the vertical force bearing is of a sliding pair type in a plane crossing a vertical line and rests on a rubber elastic seat. A bridge girder seismic isolation bearing device according to any one of claims 1 to 3, wherein the vertical force bearing is interposed between the web of the groove-shaped shoe and the convex-shaped shoe of the portion facing the web. A bridge girder seismic isolation bearing device according to any one of claims 1 to 3, wherein the vertical force bearing is interposed between a flange of the groove-shaped shoe and a convex-shaped shoe located opposite thereto.