JPS594003B2 - Fixing steel plate exterior lateral pressure buffer sliding bearing - Google Patents

Description

Detailed Description of the Invention The present invention allows slabs or girders (hereinafter referred to as structures) or rigid-frame viaducts connected thereto to expand and contract due to temperature changes and other factors, while outsourcing lateral pressure due to horizontal seismic forces and other factors. An anchoring steel plate that is used to support the track-connected girder of a railway bridge, and to easily make minute horizontal position adjustments such as correcting misalignment of the track-directly connected girder. This relates to an exterior side pressure buffer sliding bearing.

Next, the present invention will be explained in detail using illustrated examples.

FIGS. 1 and 2 show an example of a lateral pressure buffering sliding support 11 used in the present invention, in which the surface of the sliding side plate 10 is made of a low-friction, corrosion-resistant material such as Teflon (registered trademark) or other synthetic resin. A sliding material 9 consisting of is fixed together with an adhesive or the like, and the back side of the sliding side plate 10 is fixed to one side of the lateral pressure buffering rubber layer 6 by baking or with an adhesive, etc., and a fixed side steel plate 80 An anchor engaging portion 7 consisting of a cross-shaped recess is formed on the surface by press working, and the back surface of the stationary side steel plate 8 is integrally fixed to the other side surface of the rubber layer 6 by baking or adhesive, etc.
A protrusion formed on the back surface of the stationary side steel plate 8 by forming the engaging portion 7 consisting of the recess is embedded in the rubber layer 6.

Figures 3 and 4 show an example of the vicinity of the support when connecting a slab track rigid-frame viaduct having protrusions and seats used in the present invention and a slab directly connected to the track. Ramen viaduct 1
A catch 2 having an upper surface at a lower level than the upper surface of the elevated bridge slab 14 is integrally constructed at the end of the elevated bridge 5, and the elevated bridge A protrusion body 16 made of reinforced concrete that protrudes above the upper surface of the slab 14 is integrally constructed, and a portion of the protrusion body 16 located above the slab 14 has a semicircular planar shape. The portion of the protrusion body 16 located above the catch seat 2 has a rectangular planar shape, and a vertical steel plate or stainless steel plate is attached to both sides in the plus width direction of the portion of the protrusion body 16 that is located above the catch seat 2. A metal grooved support plate 17 is fixed to the protrusion.

The protrusion 5 is constituted by the raising body 16 and the sliding support plate 17.

Further, shoes 3 for supporting vertical forces, which are rubber shoes or other shoes, are placed on both sides of the seat 2 in the slab width direction, and the shoes 3 are fixed to the seat 2 as necessary.

FIGS. 5 and 6 show structures in the present invention,
This shows an example of a case where a slab girder 1 that is also used as a track slab that directly connects a track is adopted, in which a slab girder body 18 made of a reinforced concrete plate or a pre-tread concrete plate has a substantially U-shaped plane at the center of both ends. A recessed portion 4 is provided, and a side groove 19 having a groove bottom surface that slopes upwardly from below is provided at the middle upper portion of the side surface of the recessed portion 4 in the width direction of the girder.

FIG. 7 shows an example of a currently used track slab 20 for a viaduct connected to the slab girder 1 used in the present invention, in which the central part of both ends of the slab body 21 made of a reinforced concrete slab or a prestressed concrete slab is semicircular in plane. A recess 22 is provided.

Figures 8 to 10 show viaduct 1 with track slab installed.
5 shows the installed state at the connection part between the above-mentioned slab girder 1 which also serves as a track slab, which directly connects the tracks at the end of the track 5, and the current track slab 20 installed on a viaduct.

Both ends of the slab girder 1 directly connected to the track are installed on vertical force supporting shoes 3 installed on the seats 2 at the ends of the adjacent viaducts 15, and the four parts 4 at both ends of the slab girder 1 A side groove 19 in which the seat side portion of the projection 5 is disposed, and the lateral pressure buffer sliding support 11 is provided on both sides of the recess 4, and a sliding support plate 1 in the projection 5.
7, and the lateral pressure buffer sliding support 11
The sliding member 9 is brought into contact with the sliding support plate 17 on the protrusion 5, and a position adjustment wedge (not shown) is inserted between the lateral pressure buffering sliding support 11 and the bottom surface of the side groove 19. After the position of the slab girder 1 in the girder width direction is adjusted by adjusting the insertion amount of the wedge, the wedge is removed, and the fixed side steel plate 8 of the sliding support 11 absorbs the lateral pressure generated by removing the wedge.
Cement mortar, synthetic resin mortar, or other fixing hardening filler 12 is placed in the wedge-shaped space between the side groove 19 and the side groove 19.
The curable filler 12 fixes the lateral pressure buffer sliding bearing 11 to the slab girder 1.

Elevated track slab 2 placed on elevated bridge slab 14
A recess 22 at one end of the projection 5 is arranged to surround one side of the projection 5, and a hardening filler 23 such as cement mortar or ascon is placed in the semicircular space between the recess 22 and the projection 5.
is filled, the railway rail 24 is arranged across the slab girder 1 and the track slab 20, and the rail fastening device (
(not shown).

Further, the other end of the track slab 20 and both ends of other track slabs placed on the slab of the viaduct are also fixed in predetermined positions by projections and curable filler provided on the upper surface of the viaduct slab.

FIG. 11 shows an example of connecting the slab girder 1 and the slab girder 1', which are directly connected to the track.The bridge pier 25 has a receiving seat 2 at the top, and a protrusion 5 having a rectangular planar shape is attached to the receiving seat 2. It is installed in one piece.

In this case, the planar shapes of the seat 2 and the protrusion 5 are different from those in FIGS. 3 and 8, and the other configurations are the same.

When carrying out the present invention, the side grooves 19 may be provided on both sides of the protrusion 5, and the sliding support plates 17 may be fixed to both vertical sides of the recess 4 of the slab girder 1.

Further, the anchor engaging portion I may be a convex portion, and the side surface shape of the engaging portion 7 may be any shape other than a cross shape.

Further, the side groove 19 may be a groove having a vertical groove bottom, and the sliding support plate 17 may be a steel plate coated with a synthetic resin.

According to the present invention, the receiver is attached to the end of a structure such as a slab or a girder that is placed on the receiver 2 at the end of a viaduct, a bridge pier, the top of an abutment, etc. via a shoe 3 for supporting vertical force. A recess 4 is provided for accommodating a protrusion 5 integrally provided on the seat 2,
Between both sides of the projection 5 in the width direction of the structure and both sides of the recess 4 in the width direction of the structure, there is a lateral pressure buffering rubber layer 6 and an anchor holding part 1 fixed to one side thereof. A lateral pressure buffer sliding support 11 is disposed, which is made up of a fixed side steel plate 8 with a fixed side plate 8 and a sliding side chain plate 10 with a sliding member 9 fixed to the other side of the rubber layer 6. A hardenable fixing filler 12 is filled between the fixed side steel plate 8 and the other side of the recess 4 or the protrusion 5 and in contact with one of the side surfaces or the side surfaces of the protrusion 5. Therefore, the sliding material 9 in the lateral pressure buffer sliding support 11
The sliding between the side surface of the recess 4 or the side surface of the protrusion 5 allows expansion and contraction of the connecting viaduct and the structure due to changes in humidity, etc., and also reduces lateral pressure due to earthquake force or relative displacement between the connecting viaducts. The structure can be safely supported by the buffering rubber layer 6, and since there is no gap between the lateral pressure buffering sliding support 11 and the structure and the protrusion 5, the structure can be held within its width. It can be supported in a stable state so that it does not deviate in the direction, and the anchor engagement portion 7 and hardenable filler 12 on the fixed side steel plate 8
By this engagement, effects such as being able to firmly hold the lateral pressure buffer sliding support 11 in a predetermined position of the structure or the protrusion 5 can be obtained.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a perspective view of a lateral pressure buffer sliding support used in the present invention, FIG. 2 is a longitudinal sectional side view thereof, and FIG. FIG. 4 is a front view showing a part of the viaduct with projections and seats, and FIG. 5 is a slab girder that also serves as a track slab used in the present invention. FIG. 6 is a longitudinal sectional front view of the vicinity of the recess in the slab girder, FIG. 7 is a perspective view of a viaduct track slab used in an embodiment of the present invention, and FIG. 8 is a lateral pressure buffer movable support device. FIG. 9 is a partially cutaway plan view showing the installation state of the viaduct track slab, FIG. 9 is a perspective view of a portion thereof, and FIG. 10 is a cross-sectional view taken along the line A-A in FIG. 8. FIG. 11 is an exploded perspective view showing a case in which the track-coupled girders are connected to each other by being used as a seat at the top of a bridge pier. In the figure, 1 is a slab girder, 2 is a seat, 3 is a shoe for vertical force support, 4 is a recess, 5 is a protrusion, 6 is a rubber layer for lateral pressure buffering, 1 is an engagement part for an anchor, 8 is a fixed side steel plate , 9 is a sliding material, 10 is a sliding side steel plate, 11 is a lateral pressure buffer sliding support, 12
is a hardening filler for fixing, 13 is a bridge pier, 14 is a bridge girder, 15
is a viaduct, 16 is a protrusion body, 17 is a metal sliding support plate,
19 is a side groove, and 20 is a track slab for a viaduct.

Claims (1)

[Claims] 1 A protrusion 5 that is provided integrally with a seat 2 that supports the structure is arranged in a recess 4 provided at the end of a structure such as a slab or a girder, and the protrusion 5 is arranged in the width direction of the structure. and both sides of the recess 4 in the width direction of the structure are provided with a lateral pressure buffering rubber layer 6 and a fixed side steel plate 8 with an anchor engagement part 7 fixed to one side thereof. A sliding side cable plate 10 with a sliding material 9 fixed to the other side of the rubber layer 6
A lateral pressure buffering sliding support 11 is arranged, the sliding member 9 is brought into contact with one of the side surfaces of the four parts 4 or the side surfaces of the protrusion 5, and the fixed side steel plate 8 and the side surface of the recess 4 or the protrusion 5 are disposed. A fixing steel plate exterior lateral pressure buffer sliding bearing, characterized in that a fixing curable filler 12 is filled between the side surfaces of the fixing steel plate and the other side surface thereof.