JP5657430B2 - Waterproof structure of sliding bearing device - Google Patents

Description

  The present invention relates to a waterproof structure for a sliding support device.

  On the base plate fixed on the base portion of the building foundation, a slip receiving plate whose upper surface is a slip surface is disposed, and on the lower surface of the upper plate fixed to the lower part of the building, an elastically deformable laminated rubber body and By allowing a sliding bearing made of a sliding member fixed to the lower surface of the laminated rubber body to contact the sliding surface of the sliding receiving plate, relative movement in the horizontal direction between the building foundation and the lower part of the building is allowed. A sliding support device is disclosed (see Patent Document 1 and Patent Document 2).

JP 2005-337283 A Japanese Patent Laid-Open No. 2006-9496

  The above-described conventional sliding bearing device is a seismic isolation device that attenuates the energy of the earthquake by friction between the sliding bearing fixed to the building side and the sliding support plate fixed to the building foundation side. . Therefore, if water or foreign matter adheres to the sliding surface of the slip receiving plate, the predetermined performance is not exhibited. For this reason, in the above-mentioned conventional example, in order to prevent water and foreign matter from adhering to the sliding surface, the sliding support and the sliding receiving plate are covered with a cover.

  However, for the sliding support device, it is necessary to check the state of the sliding support plate and to measure the height of the rubber laminate during periodic inspection after construction. If it was covered with, it would hinder the inspection work.

  In view of the above-described facts, an object of the present invention is to make it possible to easily perform an inspection operation of a sliding support device while suppressing water from adhering to the sliding surface of a sliding receiving plate.

  The invention of claim 1 is provided on a building foundation, having a sliding surface having a sliding surface, a sliding bearing provided at a lower part of the building and configured to be slidable on the sliding surface, and on the building foundation. And a frame-shaped member that is provided so as to surround the outer periphery of the slide receiving plate, and is configured such that the height can be set higher than at least the sliding surface, and the height can be changed partially or entirely, have.

  In the waterproof structure of the sliding support device according to claim 1, the outer periphery of the slip receiving plate is surrounded by the frame-shaped member, and the height of the frame-shaped member can be set higher than at least the sliding surface of the slip receiving plate. In addition, it is possible to suppress the slip receiving plate from being submerged during precipitation, and to prevent water and foreign matter from adhering to the slip surface of the slip receiving plate. In addition, since the height of the frame-shaped member can be partially or wholly changed, the inspection work can be easily performed by appropriately changing the height of the frame-shaped member when inspecting the sliding support device. It can be carried out.

  According to a second aspect of the present invention, in the waterproof structure of the sliding support device according to the first aspect, the frame-shaped member is formed of a hollow elastic body to which an internal pressure is applied.

  In the waterproof structure of the sliding support device according to claim 2, the height of the frame-shaped member can be increased by increasing the internal pressure applied to the hollow elastic body, and the height of the frame-shaped member can be increased by decreasing the internal pressure. Can be reduced. Moreover, since the hollow elastic body can be partially deformed while maintaining the internal pressure, the height of the frame-shaped member can be partially changed. For this reason, the height of a frame-shaped member can be easily changed at the time of inspection work of a sliding support device.

  As described above, according to the waterproof structure of the sliding support device according to claim 1 of the present invention, the inspection work of the sliding support device can be performed while suppressing water from adhering to the sliding surface of the sliding support plate. An excellent effect that it can be easily performed is obtained.

  According to the waterproof structure of the sliding support device according to the second aspect, an excellent effect is obtained that the height of the frame-shaped member can be easily changed during the inspection work of the sliding support device.

It is sectional drawing which shows the state which is suppressing the water immersion by the standing frame-shaped member in the waterproof structure of a sliding support apparatus. It is a perspective view which shows the state which the frame-shaped member stood up in the waterproof structure of a sliding support apparatus. It is sectional drawing which shows the state which the height of the frame-shaped member reduced in the waterproof structure of a sliding support apparatus. It is a perspective view which shows the state which the height of the frame-shaped member reduced in the waterproof structure of a sliding support apparatus.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In FIG. 1, the waterproof structure S of the sliding support device according to the present embodiment includes a sliding receiving plate 10, a sliding support 12, and a frame-shaped member 14. Among these, the slide receiving plate 10 and the slide support 12 constitute a support device 16.

  As shown in FIGS. 1 and 2, the slide receiving plate 10 is provided on a building foundation 18 and has a sliding surface 10 </ b> A. Specifically, a pedestal portion 20 is provided on the building foundation 18, and a base plate 22 is fixed on the pedestal portion 20. The slip receiving plate 10 is fixed on the base plate 22 so that the slip surface 10A is on the upper surface side. The pedestal 20, the base plate 22, and the slide receiving plate 10 are each formed, for example, in a substantially rectangular shape in plan view. The sliding surface 10 </ b> A is formed, for example, in a substantially circular shape at the center of the sliding receiving plate 10.

  The sliding bearing 12 is provided in the lower part of the building 24, and is configured to be slidable on the sliding surface 10A. A mounting convex portion 26 is provided at the lower part of the building 24, and an upper plate 28 is fixed to the lower surface of the mounting convex portion 26. The sliding bearing 12 is fixed to the lower surface of the upper plate 28. A sliding plate 30 is fixed to the lower surface of the sliding support 12. The sliding plate 30 is in contact with the sliding surface 10 </ b> A of the sliding receiving plate 10. In order to reduce the friction between the upper plate 28 and the sliding surface 10A, it is desirable that the lower surface of the upper plate 28 be subjected to a treatment such as fluororesin processing.

  The size of the slide receiving plate 10 and the range of the slide surface 10A are set in consideration of the relative movement amount of the slide support 12 when an earthquake occurs. Accordingly, the sliding surface 10A is formed larger than the upper plate 28 in a plan view, and a sufficient area for the sliding bearing 12 to slide is ensured.

  Although not shown in the drawings, the sliding support 12 includes a plurality of internal steel plates stacked with a predetermined gap in the thickness direction, a rubber plate disposed therebetween, and the periphery of the internal steel plate and the rubber plate. It is configured in a columnar shape with covering rubber that covers and protects. In addition, the structure of the sliding bearing 12 is not restricted to this, For example, the structure which does not have an internal steel plate may be sufficient.

  The frame-like member 14 is provided on the building foundation 18 so as to surround the outer periphery of the slide receiving plate 10, and the height can be set higher than at least the sliding surface, and the height is partially or entirely changed. It is configured to be possible. Specifically, the frame-like member 14 is fixed, for example, on the pedestal portion 20 so as to surround the four sides of the slide receiving plate 10 and the base plate 22. In order to prevent intrusion of water from the outside to the inside of the frame-shaped member 14, the frame-shaped member 14 is in close contact with the pedestal portion 20 over the entire circumference, for example.

  The frame-like member 14 is configured by a hollow elastic body to which an internal pressure is applied, for example, an annular rubber tube having a substantially square cross section. In order to apply an internal pressure to the frame-shaped member 14, a fluid such as air may be sealed, or a fluid inlet / outlet, for example, a valve (not shown) is provided in the frame-shaped member 14, and the valve is Alternatively, a fluid such as air may be supplied. When the fluid inlet / outlet is provided in the frame-shaped member 14, the internal pressure of the frame-shaped member 14 can be reduced by removing the fluid from the gateway.

  As shown in FIGS. 1 and 2, the frame-like member 14 stands up to a position higher than the sliding surface 10 </ b> A of the sliding receiving plate 10 in a normal state. When the frame-shaped member 14 is a hollow elastic body and has elasticity, the height of the frame-shaped member 14 can be adjusted by the applied internal pressure. When the frame-shaped member 14 is not an elastic body and does not have stretchability, the height is determined by the size of the base material constituting the frame-shaped member 14 (cross-sectional shape when expanded).

  The building 24 may be a structure that is supported via the sliding support device 16 of the present embodiment. For example, an office building, a hospital, an apartment house, a museum, a public hall, a school, a government building, a shrine, a temple, a bridge , Stadiums, lighting, etc. The building foundation 18 may be anything that supports the building 24 via the sliding support device 16 of the present embodiment. The building foundation 18, the ground, etc., and various members provided on these may also be used. Including.

(Function)
This embodiment is configured as described above, and the operation thereof will be described below. In FIG. 1, in the sliding bearing device 16 according to the present embodiment, relative movement in the horizontal direction (arrow A direction) between the building foundation 18 and the building 24 is allowed by sliding between the sliding plate 30 and the sliding bearing 12. . When an earthquake occurs, the energy of the earthquake can be attenuated by the friction between the sliding bearing 12 and the sliding receiving plate 10 accompanying the horizontal movement of the building 24 and the shear deformation of the sliding bearing 12.

  Further, in the waterproof structure S of the sliding support device according to the present embodiment, since the outer periphery of the sliding receiving plate 10 is surrounded by the frame-shaped member 14, as shown in FIG. Even if the water 32 accumulates, the frame-shaped member 14 becomes a weir, and the slip receiving plate 10 is suppressed from being submerged. For this reason, it is possible to suppress adhesion of water and foreign matter to the sliding surface 10A of the sliding receiving plate 10.

  Next, when the sliding support device 16 is inspected, the weight of the operator (not shown) acts on the frame-shaped member 14, so that the frame-shaped member 14 can be moved as shown by a two-dot chain line in FIG. 2. While maintaining the internal pressure, the frame-shaped member 14 can be partially deformed to form the recess 14A having a locally low height. Further, when a fluid inlet / outlet (not shown) is provided in the frame-shaped member 14, the height of the frame-shaped member 14 is reduced by reducing the internal pressure of the frame-shaped member 14, as shown in FIGS. Can be reduced overall.

  Thus, in the waterproof structure S of the sliding support device according to the present embodiment, the height of the frame-like member 14 can be easily changed, so that water adheres to the sliding surface 10A of the sliding receiving plate 10 at the normal time. While suppressing this, it is possible to easily perform the inspection work of the sliding support device 16 such as confirmation of the state of the sliding support plate 10 and measurement of the height of the sliding support 12. This also allows the seismic isolation performance of the sliding support device 16 to be maintained over a long period of time.

(Other embodiments)
The frame-shaped member 14 is a rubber tube having a substantially rectangular cross section, but the cross-sectional shape may be other polygonal, circular, semi-circular, etc., and is made of a material having less stretchability than rubber. It may be a tube. Although the frame-shaped member 14 has an annular shape, if the inside of the frame-shaped member 14 is partitioned into a plurality of chambers and internal pressure is applied to each chamber, the internal pressure of some chambers temporarily decreases. Even in this case, the decrease in the height of the frame-like member 14 can be suppressed by the internal pressure of the other chamber.

  Further, the frame-like member 14 is constituted by a hollow elastic body to which an internal pressure is applied, but is not limited to this, and can prevent the slip receiving plate 10 from being flooded, and the height can be partially or Any member may be used as long as it can be changed as a whole.

DESCRIPTION OF SYMBOLS 10 Sliding receiving plate 10A Sliding surface 12 Sliding bearing 14 Frame-shaped member 18 Building foundation 24 Building S Waterproof structure of sliding bearing device

Claims (2)

A slip receiving plate provided on the building foundation and having a slip surface;
A sliding bearing provided at the bottom of the building and configured to be slidable on the sliding surface;
A frame that is provided on the building foundation so as to surround the outer periphery of the slide receiving plate, the height of which can be set higher than at least the sliding surface, and the height can be changed partially or entirely. A member,
Waterproof structure of sliding bearing device having   The sliding structure according to claim 1, wherein the frame-shaped member is formed of a hollow elastic body to which an internal pressure is applied.

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