JP3190435B2 - Rubber bearing material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate-like rubber bearing material interposed between a base such as an abutment and a structure installed on the base such as a bridge body.

[0002]

2. Description of the Related Art This rubber bearing material is used to construct a structure.
First, it is installed at a predetermined position on a base, and a structure is assembled thereon. Therefore, it is important to accurately position the rubber bearing on the base.

As an example, when constructing a bridge, the above-described positioning has been performed as shown in FIG. In FIG. 5, reference numeral 01 denotes an abutment (pier), and a shoe seat 02 serving as a bridge support portion is integrally formed on an upper surface thereof. Then, a square plate-shaped rubber bearing material 03 is first placed on the shoe seat 02. Indication 04 indicating the four corner positions of rubber bearing material 03 on the upper surface of shoe seat 02
Is applied by ink marking, and by matching each corner of the rubber bearing material 03 with the corresponding display 04,
Positioning of the rubber bearing material 03 on 02 is performed.

[0004]

However, even if the outer surface of the rubber bearing member has a predetermined tolerance, even if a display is made on the mounting surface of the rubber bearing member according to the outer shape of the rubber bearing member, the outer shape of the rubber bearing member has a predetermined tolerance. However, the outer shape does not always match the display. That is, in the case of the above conventional example, even if one corner of the rubber bearing material 03 matches the corresponding display 04, the other corner does not necessarily match the corresponding display 04, and It is difficult to match the center to the center point of the bridge bearing surface.

[0005] Also, the construction drawing usually shows the center point of the bearing, and the distance between the center points is shown. Conversion from the above dimensions is required, which is troublesome. Although it is possible to display the center point of the bearing on the bearing surface, it is extremely difficult to center the center of the rubber bearing on the displayed center point.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a rubber bearing member that can accurately and easily position a rubber bearing member on a mounting surface.

[0007]

For this reason, in the present invention, in the present invention, the center lines perpendicular to each other on the plate surface of the rubber bearing material are placed on the rubber bearing material at positions where they intersect with the side surfaces of the rubber bearing material. An indication extending in the thickness direction across both plate surfaces of the rubber bearing material is given.

When the rubber bearing material is installed on a base, two center lines orthogonal to the center of the bearing installed on the surface of the base are attached to each of the rubber bearing materials. The display is made to correspond to the center line, and the display provided on each side surface of the rubber bearing material is adjusted to the corresponding center line on the base surface. Since the display extends in the thickness direction on the side surface of the rubber bearing material between the two plate surfaces of the rubber bearing material, it can be easily adjusted to the center line on the base surface.
In this manner, the center of the rubber bearing material set on the base surface precisely matches the center point of the bearing, and is accurately positioned.

The operation of aligning the indication of the side surface of the rubber bearing material with the corresponding center line on the base surface can be performed very easily by appropriately moving the rubber bearing material in two directions at right angles. There is no effect even if there is an error in the external dimensions.

Also, the center line on the base surface can be displayed very easily, and there is no need to perform complicated conversion from the construction drawing.

[0011]

FIG. 1 is a perspective view of a rubber bearing 1 according to an embodiment of the present invention. The rubber support 1 has a rectangular plate shape. The chain line a indicates the vertical center line of the upper surface,
A chain line b indicates a horizontal center line. These center lines are orthogonal at the plane center c.

A ridge 3a extending in the thickness direction of the rubber support 1 is provided on each of the side surfaces 2a on both longitudinal sides of the rubber support 1 at a position where the center line a intersects the upper edge of the side 2a. Is displayed. Similarly, protrusions 3b are provided on both lateral sides 2b of the rubber bearing member 1 at both ends of the center line b.

However, since the plate surface of the rubber bearing member 1 has a rectangular shape, the positions of the ridges 3a, 3b do not necessarily need to be centered on the plate surface and be determined from the center lines a, b. , 2b at the center in the longitudinal direction.
a and 3b may be provided.

The rubber support 1 is of a rubber-coated type manufactured by molding one by one.
3b is formed by engraving a corresponding position on the inner surface of the mold. Demold after vulcanization, side 2
Protrusions 3a, 3b are formed in relief shapes on a, 2b.

The rubber bearing material 1 is interposed between an abutment serving as a base of a bridge and a bridge main body built thereon, and is first installed at a predetermined position for supporting the bridge main body on the abutment during bridge construction. Is done.

In FIG. 2, reference numeral 4 denotes the abutment. Reference numeral 5 denotes a shoe seat provided integrally on the upper surface of the abutment 4 and serves as a support for the bridge body. Therefore, the rubber bearing member 1 is installed on the shoe seat 5. FIG. 2 shows the rubber bearing member 1 installed on the shoe seat 5 by a broken line.

On the upper surface of the shoe seat 5, a bearing center point P, which is a reference of the upper structure bearing, is marked with its position determined from the drawing. , Two center lines A orthogonal to each other at the bearing center point P,
B is displayed by blackout. The center lines A and B correspond to the rubber support 1 when the rubber support 1 is correctly placed on the shoe seat 5.
Are set so as to match the center lines a and b.

As shown in FIG. 2, positioning of the rubber bearing material 1 on the shoe seat 5 is such that the ridges 3a, 3a on both sides in the vertical direction are located on the center line A, and the ridges 3b, 3b on both sides in the horizontal direction. Is positioned on the center line B. In the rubber bearing material 1 installed on the shoe seat 5 in this way, the center lines a and b and the face center c coincide with the center lines A and B and the bearing center point P set on the shoe seat 5. Therefore, accurate positioning is performed.

Moreover, it is extremely easy to align each of the ridges 3 with the center line A or B, for example, after aligning the ridge 3a with the center line A, displacing the rubber bearing member 1 in the direction of the center line A. What is necessary is just to match the ridge 3b with the center line B, and it is unlikely that one ridge matches but the other ridge does not match. In addition, even if there is an error in the shape and the outer diameter of the rubber bearing member 1, the positioning accuracy is not affected by the error.

The display of the center lines A and B on the surface of the shoe seat 5 is extremely easy only by drawing a line in a predetermined direction.

FIG. 3 shows another embodiment of the present invention. The rubber bearing material 1A of this embodiment is formed by forming concave grooves 6a, 6b instead of the ridges 3a, 3b in the above-described embodiment to indicate the center position on the side surfaces 2a, 2b. These concave grooves 6a and 6b can be formed by providing projections corresponding to the inner surface of the mold when molding the rubber support 1A.

Instead of using the protrusions or grooves as the display on the side surface as in the above embodiments, the center line may be displayed on the side surface with, for example, white rubber paint.
FIG. 4 shows an example of this. When a large number of rubber bearing members 1B are stacked and shipped from a factory, the center position of each side surface of the stacked body is measured, and a display line 7 is drawn at this position. This method is particularly suitable for a case where a rubber support is produced by preparing a large-sized blank in advance and cutting it into individual product shapes.

As described above, the present invention has been described with respect to a rectangular rubber bearing. However, the shape of the rubber bearing is not limited to a square, and the present invention can be applied to a rubber bearing having an arbitrary shape.

[0024]

According to the present invention, a plate-shaped rubber bearing member inserted between a base and a structure installed on the base is provided.
It can be positioned very easily and precisely at a predetermined position on the base.

[Brief description of the drawings]

FIG. 1 is a perspective view of a rubber bearing according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an upper surface of an abutment on which the rubber bearing material is installed, and the installed rubber bearing material is indicated by a broken line.

FIG. 3 is a view similar to FIG. 1 showing another embodiment of the present invention.

FIG. 4 is a perspective view of stacked rubber bearings showing still another embodiment of the present invention.

FIG. 5 is a perspective view for explaining a conventional rubber bearing member positioning method.

[Explanation of symbols]

1 ... rubber bearing material, 2 ... side surface, 3 ... ridge, 4 ... abutment, 5 ...
Kutsuza, 6 ... groove, 7 ... display line.

Claims (3)

(57) [Claims] 1. A plate-like rubber bearing member interposed between a base and a structure installed on the base, wherein the center lines of the rubber bearings at right angles to each other are perpendicular to each other. on the side surface at a position where each side intersection of the rubber bearing material, the rubber bearing
A rubber bearing material provided with an indication extending in the thickness direction across both plate surfaces of the material. 2. The rubber bearing according to claim 1, wherein the indication is a ridge in a thickness direction provided on a side surface of the rubber bearing. 3. The rubber bearing according to claim 1, wherein the indication is a groove in a thickness direction provided on a side surface of the rubber bearing.