JPH0312910U

JPH0312910U -

Info

Publication number: JPH0312910U
Application number: JP7117289U
Authority: JP
Priority date: 1989-06-20
Filing date: 1989-06-20
Publication date: 1991-02-08
Anticipated expiration: 2004-06-20
Also published as: JPH0716724Y2

Description

[Brief explanation of drawings]

第１図ないし第４図はこの考案の第１実施例を
示すものであつて、第１図は橋桁の免震支承装置
を示す平面図、第２図は第１図のＡ−Ａ線断面図
、第３図は第１図のＢ−Ｂ線拡大断面図、第４図
は橋桁の免震支承装置の一部を示す拡大縦断側面
図である。第５図はこの考案の第２実施例に係る
橋桁の免震支承装置の一部を示す平面図、第６図
は第５図のＣ−Ｃ線拡大断面図である。第７図は
この考案の実施例において用いられる弾性滑り支
承体を示す一部縦断正面図、第８図はその平面図
、第９図はこの考案の実施例において用いられる
水平力支承弾性ストツパの正面図、第１０図は第
９図のＤ−Ｄ線断面図である。第１１図ないし第
１３図はこの考案を実施する場合に使用できる緩
衝支承体の第１例を示すものであつて、第１１図
は平面図、第１２図は正面図、第１３図は第１２
図のＥ−Ｅ線断面図である。第１４図はこの考案
を実施する場合に使用できる緩衝支承体の第２例
を示す平面図、第１５図はその正面図である。図において、１は橋桁、２は橋台、３は桁載置
部、４は滑り板、５は弾性滑り支承体、６は水平
力支承弾性ストツパ、７は橋桁支承用前面、８は
橋桁端面、９は前部緩衝支承体、１０は橋桁支承
用側面、１１は橋桁側面、１２は側部緩衝支承体
、１３は滑り支承板、１４はゴム材、１５は上部
金属板、１６は下部金属板、１８は鋼製支持板、
１９はゴム層、２０は鋼板、２１は鋼製アンカー
ロツド、２４は鋼製保持板、２５はゴム層、２６
は鋼板、２７は透孔、２８は突条、２９は橋脚、
３０はアンカーロツド、３１は鋼製補強板、３２
ないし３４はアンカーボルトである。 Figures 1 to 4 show the first embodiment of this invention, in which Figure 1 is a plan view showing a seismic isolation support device for a bridge girder, and Figure 2 is a cross section taken along line A-A in Figure 1. 3 is an enlarged sectional view taken along the line B-B in FIG. 1, and FIG. 4 is an enlarged longitudinal sectional side view showing a part of the seismic isolation support device for the bridge girder. FIG. 5 is a plan view showing a part of a seismic isolation support device for a bridge girder according to a second embodiment of the invention, and FIG. 6 is an enlarged sectional view taken along the line C--C in FIG. 5. Fig. 7 is a partially vertical front view showing an elastic sliding support used in an embodiment of this invention, Fig. 8 is a plan view thereof, and Fig. 9 is a horizontal force bearing elastic stopper used in an embodiment of this invention. The front view and FIG. 10 are sectional views taken along the line DD in FIG. 9. Figures 11 to 13 show a first example of a buffer support that can be used to implement this invention, with Figure 11 being a plan view, Figure 12 being a front view, and Figure 13 being a front view. 12
It is a sectional view taken along the line E-E in the figure. FIG. 14 is a plan view showing a second example of a buffer support that can be used to implement this invention, and FIG. 15 is a front view thereof. In the figure, 1 is a bridge girder, 2 is a bridge abutment, 3 is a girder mounting part, 4 is a sliding plate, 5 is an elastic sliding support, 6 is a horizontal force bearing elastic stopper, 7 is a front surface for a bridge girder support, 8 is a bridge girder end face, 9 is a front buffer support, 10 is a side surface for bridge girder support, 11 is a bridge girder side surface, 12 is a side buffer support, 13 is a sliding support plate, 14 is a rubber material, 15 is an upper metal plate, 16 is a lower metal plate , 18 is a steel support plate;
19 is a rubber layer, 20 is a steel plate, 21 is a steel anchor rod, 24 is a steel retaining plate, 25 is a rubber layer, 26
is a steel plate, 27 is a through hole, 28 is a protrusion, 29 is a pier,
30 is an anchor rod, 31 is a steel reinforcement plate, 32
34 are anchor bolts.

Claims

[Claims for Utility Model Registration] (1) A sliding plate 4 is fixed to one of the lower surface of the end of the bridge girder 1 and the girder mounting portion 3 of the abutment 2, and
An elastic sliding support 5 is fixed to the other side, and the girder 1 is supported by the girder mounting part 3 via the sliding plate 4 and the elastic sliding support 5, and the lower surface of the end of the bridge girder 1 and the girder mounting part of the abutment 2 3, the upper and lower parts of the horizontal force bearing elastic stopper 6 interposed between them are fixed, and the front buffer support 9 is arranged between the bridge girder support front surface 7 and the bridge girder end face 8 of the abutment 2. ,
It is fixed to one of the bridge girder support front surface 7 and the bridge girder end surface 8, and a gap is provided between the front buffer support 9 and the other of the front surface 7 and the bridge girder end surface 8. A side buffer support 12 disposed between the bridge girder support side surface 10 and the bridge girder side surface 11 is fixed to one of the bridge girder support side surface 10 and the bridge girder side surface 11. A seismic isolation support device for a bridge girder, in which a gap is provided between the side surface 10 and the other of the bridge girder side surfaces 11. (2) The sliding plate 4 is fixed to one of the lower surface of the end of the bridge girder 1 and the girder mounting part 3 of the abutment 2, and
Elastic sliding bearing 5 with sliding bearing 13 on the other side
is fixed, and the bridge girder 1 is supported by the girder mounting portion 3 via the sliding plate 4 and the elastic sliding support 5,
A horizontal force bearing elastic stopper 6 made of a rubber material 14 and an upper metal plate 15 and a lower metal plate 16 fixed to both upper and lower surfaces of the rubber material 14 is provided between the lower surface of the end of the bridge girder 1 and the girder mounting portion 3 of the abutment 2. A gap is provided between the front buffer support 9 and the bridge girder end surface 8, which are interposed and fixed to the bridge girder support front surface 7 of the abutment 2, and the bridge girder support side surface 10 of the abutment 2 A seismic isolation support device for a bridge girder in which a gap is provided between a side buffer support 12 fixed to a bridge girder side surface 11.