JP4799934B2 - Installation method of sliding bearing and its fixing structure - Google Patents

Description

  The present invention relates to a method for installing a sliding bearing used for a base-isolated structure of a building and a fixing structure thereof.

2. Description of the Related Art Conventionally, in a base-isolated structure of a building, a bearing material that has high rigidity and strength to support the weight of the building and can be greatly deformed in the horizontal direction during an earthquake is used. Generally, there are laminated rubber bearings, rolling bearings, and sliding bearings as bearing materials.
The sliding support has a sliding mechanism composed of a sliding material made of a resin material such as tetrafluoroethylene resin or polyamide resin, and a sliding plate made of a stainless steel plate or a steel plate coated with a fluororesin. Usually, the sliding material is supported by being fitted into the lower part of the holder that supports the building with its sliding surface exposed.
The installation method of such a sliding bearing is such that a sliding plate is fixed to the upper surface of a concrete foundation placed at a predetermined height, and the sliding material and the holder are secured on the sliding plate with high accuracy so as to ensure sliding performance. After positioning, install the building foundation beam on the holder.
In addition, the installed sliding bearing must always keep the sliding material and sliding plate in a slippery state in order to exert its sliding performance, and improve the dustproof performance so that dust does not adhere to the sliding surface. Some are. For example, Patent Literature 1 and Patent Literature 2 have proposed sliding bearings that ensure sliding performance.
In Patent Document 1, a supporting frame is provided on a sliding support body provided with a low friction material (sliding material), and the lower surface of the supporting frame surrounds the periphery of the sliding support body and is slidable on the sliding surface (sliding surface). A dust-proof cover is provided. This dust-proof cover prevents a foreign substance from entering between the sliding surface and the low friction material so that a smooth sliding operation can always be performed.
In Patent Document 2, a plurality of recesses are provided on the sliding surface of the sliding material, and a gel-like lubricant is sealed in the recesses, thereby reducing the frictional resistance during sliding and improving the sliding performance. is there.
Japanese Utility Model Publication No. 6-71732 Japanese Utility Model Publication No. 6-40243

However, according to the conventional installation method of the sliding bearing including Patent Document 1 and Patent Document 2 described above, there are the following problems.
In order to demonstrate the performance of the sliding bearing as per the standard, the installation position, the inclination angle of the installation surface, and the relative position between the sliding material and the sliding plate must be within a predetermined accuracy. However, since the sliding plate and the sliding material in the sliding bearing are in a non-joined state and are easy to slide, there is a drawback that it is difficult to position with high accuracy when installing the sliding bearing. In the working state, there was a problem that the construction accuracy was lowered.
Furthermore, there has been a problem that the sliding material may fall off from the holder due to transportation during installation of the sliding bearing or be lost.

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a sliding bearing installation method and a fixing structure thereof that can ensure construction accuracy and can easily perform positioning work.
Another object of the present invention is to provide a sliding bearing installation method and a fixing structure thereof which prevent the sliding material from falling off the holder.

To achieve the above object, in the installation method of the sliding bearing according to the present invention, a sliding plate, the sliding member having a sliding plate slidably sliding bearing comprising a holder for supporting the sliding member at the bottom, the Is installed between the foundation and the foundation beam of the building, and the holder has bolt holes formed in a pair of opposing side surfaces, and the sliding material and the sliding plate are placed in a predetermined relative position. and then, one end face is screwed into the bolt hole of the holder, a fixing member having a cross section L-shaped other end face is joined to the sliding plate, is arranged so as to sandwich the holder from the side, sliding the fixing member The bearing is integrated in advance, and after the integrated sliding bearing is installed at a predetermined position, the fixing member is removed from the sliding plate.
In the present invention, when the sliding bearing is installed, the sliding member and the sliding plate can be fixed in advance at a predetermined relative position to be in an immobile state. Then, it is possible to align the slidable bearing while maintaining this state at a predetermined installation position. For this reason, construction accuracy can be ensured and positioning work can be easily performed.

In the sliding bearing installation method according to the present invention, it is preferable that the integrated sliding bearing is positioned at a predetermined position, then the foundation is placed, and then the foundation beam of the building is installed.
In the present invention, unlike the conventional installation method, it is not necessary to adjust the foundation that has been placed during positioning work such as the height and inclination of the sliding bearing, and construction can be performed efficiently.

Further, in the installation method of the sliding support according to the present invention, one end is fixed to the holder outside the fixing member, and the other end is in contact with the sliding plate so that the sliding member, the sliding plate and the holder are surrounded. It is preferable to provide a dustproof sheet so as to cover the sliding area.
In the present invention, the inside of the sliding area can be protected by the dustproof sheet. Therefore, dust does not adhere to the sliding material or sliding plate in the sliding region, and durability in sliding performance can be ensured. Further, when the sliding support moves in the horizontal direction, the dustproof sheet has a function of cleaning the sliding plate by sweeping dust.

Further, in the fixing structure of the sliding bearing according to the present invention, a sliding plate, the sliding member having a sliding plate slidably, and a holder for supporting the sliding member at the bottom, the sliding bearing having a foundation and a building It is installed between the base beam and the holder has bolt holes formed on a pair of opposing side surfaces, and is fixed in an L shape in cross section to removably connect the sliding plate and the holder that supports the sliding material The fixing member is provided with a member, and one end surface is screwed into the bolt hole of the holder, the other end surface is joined to the sliding plate, and the holder is arranged so as to sandwich the holder from the side surface side .
In the present invention, the sliding plate and the holder can be fixed and integrated using a fixing member when the sliding bearing is installed. Thereby, since the installation work can be performed while the relative position between the sliding plate and the sliding material is fixed, the positioning work is facilitated. When the sliding support is positioned at the predetermined position, the sliding support function can be obtained by removing at least the fixing member from the sliding plate.

According to the sliding bearing installation method and the fixing structure thereof according to the present invention, when the sliding bearing is installed, the sliding member and the sliding plate, which have a structure that easily slides in advance, are fixed at a predetermined position. The accuracy can be ensured and the positioning operation can be easily performed.
In the integrated sliding support, the sliding material is sandwiched between the sliding plate and the holder. For this reason, in this invention, it can prevent that the slipping material currently fitted by the holder falls off at the time of construction or conveyance, and is lost.

Hereinafter, the installation method of the sliding bearing and the fixing structure thereof according to the first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a side view showing an installed state of a sliding bearing according to the first embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of the sliding bearing shown in FIG. 1, and FIG. 3 is a positioning of an integrated sliding bearing. FIG. 4 is a diagram showing a state, and FIG. 4 is a diagram showing a state when the installation of the sliding bearing according to the first embodiment is completed.

  As shown in FIG. 1, a sliding bearing 1 according to the first embodiment is used for a base-isolated structure of a building and is installed on an upper surface 2a of a foundation 2 made of concrete or the like. The sliding support 1 includes a sliding plate 3 having a substantially square shape in plan view, a sliding plate 3 having a sliding surface 3a, a sliding member 4 provided with the sliding surface 3a so as to be slidable, and a lower member 5b. It comprises a holder 5 that is fitted and supported.

The holder 5 is fixed to the building foundation beam 6 by the first bolt 7 at the upper part 5a, and the sliding member 4 is fitted to the concave part 5c formed on the lower surface 5b so as to protrude downward.
As shown in FIG. 1, the foundation 2 has a first foundation 21 that is in a range in which the sliding support 1 is not installed, and a first foundation for the reason that, for example, the strength of the foundation 2 is secured in the range in which the sliding support 1 is installed. It consists of a second foundation 22 cast thicker than the foundation 21.

As shown in FIGS. 1 and 2, the holder 5 has a substantially square shape in plan view, and a plurality of bolt holes 8 are formed in a pair of side surfaces 5d facing each other. When the sliding bearing 1 is installed, one end surface 10a of the long fixing member 10 having an L-shaped cross section is fixed to each side surface 5d by screwing the second bolt 9 into the bolt hole 8. . As shown in FIG. 2, the fixing members 10 and 10 have substantially the same length as one side (the vertical side shown in FIG. 2) of the sliding plate 3. It arrange | positions so that both side surface 5d, 5d may be inserted | pinched.
Further, as shown in FIG. 1, the other end face 10b of the fixing member 10 is joined to the sliding plate 3 by a hole 3b formed in the sliding plate 3 by a third bolt 11 and a nut 12 (see FIG. 3). .
Since the fixing member 10 is attached to the sliding support 1 in this way, the sliding plate 3 and the sliding member 4 are in an immobile state at a predetermined relative position.

  As shown in FIGS. 2 and 3, circular holes 3 c are formed through the four corners 3 d of the sliding plate 3. Each circular hole 3c is inserted with a height adjusting bolt 13 having a thread cut on the peripheral surface of the bar, and is inserted into the sliding plate 3 from above and below at a predetermined position of the height adjusting bolt 13. The nut 14a and the third nut 14b are screwed together. The height adjusting bolt 13 protrudes below the sliding plate 3 by a predetermined length, and the length can be adjusted by the rotation of the second nut 14a and the third nut 14b.

Next, the installation method by the sliding support of such a structure is demonstrated based on drawing.
First, as shown in FIG. 3, the sliding member 4, the sliding plate 3, and the holder 5 are integrated in advance by a fixing member 10. Hereinafter, the sliding bearing 1 that is integrated as necessary will be referred to as an integral sliding bearing 1A.

Next, as shown in FIG. 3, at the installation position of the sliding support 1, the height, the planar position, and the inclination of the integrated sliding support 1 </ b> A are positioned using the height adjusting bolt 13. The height adjustment method at this time is such that the lower end 13 a of the height adjustment bolt 13 is embedded and fixed at a predetermined position of the first foundation 21 at each corner 3 d of the sliding plate 3.
Then, the height adjusting bolt 13 is inserted into the circular hole 3c of the sliding plate 3 with the sliding plate 3 of the integral sliding support 1A sandwiched between the second nut 14a and the third nut 14b. And the inclination and height of the sliding surface 3a are adjusted by adjusting the height of each corner 3d of the four corners of the sliding plate 3 with the height adjusting bolt 13.

After adjusting the position of the sliding plate 3, the second foundation 22 forming a two-dot chain line shown in FIG. 3 is placed with concrete or the like (see FIG. 1 for the placement state). Thereby, the foundation 2 and the integral sliding support 1A are fixed at a predetermined position.
Subsequently, as shown in FIG. 4, the foundation beam 6 is installed on the upper portion 5 a of the holder 5. At this time, since the holder 5 is fixed at a predetermined position by the fixing member 10 (see FIG. 3), the foundation beam 6 can be easily installed.
Finally, in order to make the sliding support 1 function, the second bolt 9 and the third bolt 11 are removed and the fixing member 10 is removed (see FIGS. 3 and 4).

In the sliding bearing installation method and its fixing structure according to the first embodiment described above, when the sliding bearing 1 is installed, the relative position between the sliding member 4 and the sliding plate 3 having a structure that easily slides in advance is set at a predetermined position. By making it immovable, it is possible to ensure construction accuracy and easily perform positioning work.
Further, in the sliding bearing installation method and its fixing structure according to the first embodiment, when the sliding bearing 1 is integrated, the sliding material 4 is sandwiched between the holder 5 and the sliding plate 3 and does not move. Therefore, it is possible to prevent the sliding material 4 from being detached from the holder 5 and falling off during transportation or work during construction as in the past.

Next, a second embodiment of the present invention will be described with reference to FIG. 5, but the same or similar members and parts as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted. A configuration different from that of the first embodiment will be described.
FIGS. 5A and 5B are views showing the installation state of the sliding bearing according to the second embodiment of the present invention, wherein FIG. 5A is a schematic view thereof, and FIG. 5B is a plan view thereof.
In the second embodiment, as shown in FIG. 5B, in addition to the fixing members 10 and 10 of the first embodiment, a pair of side surfaces 5e and 5e of the holder 5 on the side where they are not fixed. Are provided with L-shaped second fixing members 15, 15. Similar to the fixing member 10, the second fixing member 15 is screwed to the holder 5 and the sliding plate 3 with bolts.

Further, as shown in FIG. 5A, one end 16 a is fixed to the outside of the fixing members 10 and 15 with respect to the holder 5 by using the second bolt 9, and the other end 16 b is brought into contact with the sliding plate 3. A dustproof sheet 16 is provided. The dustproof sheet 16 uses a member such as a highly durable rubber such as chloroprene rubber or natural rubber, or a polymer polyethylene sheet made of plastic resin.
With such a configuration, the sliding region M surrounded by the sliding plate 3, the sliding member 4, the holder 5, and the fixing members 10 and 15 is closed by the dustproof sheet 16, and prevents intrusion of dust or water from the outside. Can be prevented.

About the installation method and its fixing structure of the second embodiment, as shown in FIGS. 5 (a) and 5 (b), an integrated sliding bearing 1A is configured in advance as in the first embodiment. The second foundation 22 and the foundation beam 6 are installed after positioning the integral sliding bearing 1A with a predetermined height and inclination using the height adjusting bolt 13 (see FIG. 3). Thereafter, in the second embodiment, the sliding member 4 can slide on the sliding surface 3 a by removing only the third bolt 11 that has fixed the fixing members 10 and 15 and the sliding plate 3.
Further, as shown in FIG. 5A, since the contact surface 16b of the dustproof sheet 16 is in contact with the sliding surface 3a, when the sliding support 1 is moved horizontally due to an earthquake or the like, the dustproof sheet 16 can It has a function to sweep.
Thus, in the second embodiment described above, a dustproof effect can be obtained in addition to the same effects as in the first embodiment.

The first and second embodiments of the sliding bearing installation method and the fixing structure thereof according to the present invention have been described above, but the present invention is not limited to the first and second embodiments described above. It can be changed as appropriate without departing from the spirit of the invention.
For example, in the first and second embodiments, the fixing members 10 and 15 are long members having an L-shaped cross section, but the present invention is not limited to this. For example, a plurality of L-shaped jigs may be provided partially at a fixed location, and the shape may be a U-shaped member, for example. In short, it is only necessary that the holder 5 and the sliding plate 3 are fixed without being displaced.
Further, in the first embodiment, the fixing member 10 is removed after the sliding support 1 is installed, but only the third bolt 11 is removed as in the second embodiment, and the sliding member 4 and the sliding plate 3 are removed. If the sliding function is enabled, the fixing member 10 may be attached to the holder 5.
Further, in the first and second embodiments, the fixing members 10 and 15 and the sliding plate 3 are fixed using the third bolt 11 and the nut 12, but the present invention is not limited to this, and other methods may be used. For example, it may be a fixing method in which a nut is not used by cutting a screw in the hole 3b of the sliding plate 3 through which the third bolt 11 is inserted.

It is a side view which shows the installation state of the sliding bearing by 1st embodiment of invention. It is the sectional view on the AA line of the sliding bearing shown in FIG. It is a figure which shows the positioning state of the integrated slide support. It is a figure which shows the state at the time of the installation completion of the sliding bearing by this 1st embodiment. It is a figure which shows the installation state of the slide bearing by 2nd embodiment of this invention, Comprising: (a) is the schematic diagram, (b) is the top view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sliding bearing 2 Foundation 3 Sliding plate 3a Sliding surface 4 Sliding material 5 Holder 6 Foundation beam 9 Second bolt 10, 15 Fixing member 11 Third bolt 13 Height adjusting bolt 16 Dustproof sheet M Sliding area

Claims (4)

And the sliding plate, sliding bearings to be installed between the sliding member provided with said sliding plate slidably, and a holder for supporting the sliding member at the bottom, the sliding bearing having a basis and foundation beams building The installation method of
The holder is formed with bolt holes on a pair of opposing side surfaces,
The sliding material and the sliding plate are in a predetermined relative position,
A fixing member having an L-shape in cross-section in which one end surface is screwed into the bolt hole of the holder and the other end surface is joined to the sliding plate is disposed so as to sandwich the holder from the side surface, and the fixing member the advance integrated to the sliding bearings and,
A method for installing a sliding bearing, wherein the integrated sliding bearing is installed at a predetermined position, and then the fixing member is removed from the sliding plate. The sliding bearing according to claim 1, wherein the integrated sliding bearing is positioned at the predetermined position, the foundation is placed, and then the foundation beam of the building is installed. Installation method. Outside the fixing member, one end is fixed to the holder and the other end is in contact with the sliding plate so as to cover the sliding region surrounded by the sliding material, the sliding plate, and the holder. 3. A sliding bearing installation method according to claim 1, wherein a dustproof sheet is provided on the sliding bearing. And the sliding plate, the sliding material provided the sliding plate slidably, and a holder for supporting the sliding member at the bottom, the sliding bearing having a was placed between the foundation and footing beams of the building,
The holder is formed with bolt holes on a pair of opposing side surfaces,
A fixing member having an L-shaped cross-sectional view that removably connects the sliding plate and the holder supporting the sliding material ;
The fixing member is arranged such that one end surface is screwed into the bolt hole of the holder, the other end surface is joined to the sliding plate, and the holder is sandwiched from the side surface side . Fixed structure.

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