JP6913997B2 - Sliding bearing structure and buildings equipped with it - Google Patents

Description

The present invention relates to, for example, a sliding bearing structure suitable for connecting two structures in the presence of a direction that allows relative displacement and a direction that does not allow relative displacement, and a building provided with the same.

Conventionally, a seismic isolation device using a sliding bearing has been adopted for the purpose of suppressing vibration of a structure that vibrates due to an earthquake, a typhoon, or the like.

Japanese Patent No. 3551997

However, in the conventional sliding bearing, the binding force against the lifting force may be insufficient, and when a load exceeding the limit of the binding force is applied, the sliding surfaces 51 and 52 in the state shown in FIG. 5 (A) are shown in the same figure. After being separated as shown in (B), when returning to the state shown in FIG. (A), the two 51 and 52 may collide with each other and the seismic isolation device may be damaged.

Therefore, it is conceivable to use a floating prevention device as shown in Patent Document 1, but such a prevention device has a drawback that it is large-scale and has a complicated structure.

The present invention has been made in consideration of the above-mentioned matters, and an object of the present invention is to provide a sliding bearing structure having a simple structure but less likely to be damaged, and a building having the same.

In order to achieve the above object, the slide support structure according to the present invention is a slide support structure provided over a support structure and a supported structure constructed at intervals from the support structure, and is described above. One of the supported structure or the supported structure is provided with a space forming portion that forms a space in which the width of the gap on the back side is wider than the gap on the entrance side, and on the other side, the inside of the gap on the back side is orthogonal to the width. An arm having a sliding portion that slides in the depth direction and a penetrating portion that is connected to the sliding portion and penetrates the gap on the inlet side inside and outside is provided, and the width of the sliding portion is set to the gap on the entrance side. wider than the width Citea is, the space forming part is provided with a stopper attachment surface portion is constituted by a stopper attached to the stopper mounting surface portion, the stopper includes a spacer portion in contact with the stopper attaching face portion, the stopper attachment It has a main body portion separated from the surface portion, is separate from the main body portion, and is surrounded by a plurality of the spacer portions arranged at intervals from each other, the main body portion, and the stopper mounting surface portion. The space is formed as the gap on the back side (claim 1).

In the sliding bearing structure, the main body includes a base plate, a front plate parallel to the base plate, a connecting plate connecting both plates, and a plurality of main bodies extending from the base plate to the front plate on both the front and back sides of the connecting plate. The rib plate may be made narrower than the base plate, and the rib plate may be narrower toward the front plate side (claim 2).

On the other hand, in order to achieve the above object, the building according to the present invention has the above slip bearing structure (claim 3).

According to the present invention, a sliding bearing structure having a simple structure but less likely to be damaged and a building having the same can be obtained.

That is, in the sliding bearing structure of the invention according to each claim of the present application, the space forming portion and the arm are separated by a simple configuration in which the sliding portion of the arm is engaged with the gap on the back side of the space forming portion. Further, it is possible to prevent damage due to a collision after separation.

In the sliding bearing structure of the invention according to claim 1 , by appropriately changing the structure of the stopper, an appropriate bearing capacity for preventing the sliding portion from separating from the gap on the back side of the space forming portion, and a desired bearing capacity are desired. It is possible to easily construct a mechanism according to the movable range.

(A) is a vertical cross-sectional view schematically showing the configuration of a sliding bearing structure according to an embodiment of the present invention, and (B) is a view taken along the line aa of (A). (A) and (B) are a vertical sectional view and a horizontal sectional view schematically showing a main part configuration of an example of a building having the sliding bearing structure. (A) is a vertical cross-sectional view schematically showing the main part configuration of the building, and (B) is a cross-sectional view taken along line A of (A). (A) is a schematic view of the sliding bearing structure, and (B) to (D) are schematic views showing modified examples of the sliding bearing structure. (A) and (B) are explanatory views schematically showing the behavior of conventional sliding bearings.

Embodiments of the present invention will be described below with reference to the drawings.

The sliding support structure shown in FIGS. 1 (A) and 1 (B) is provided over a support structure and a supported structure constructed at intervals from the support structure, and is a support structure or a cover. One of the support structures is provided with a space forming portion 3 for forming a space in which the width of the gap 2 on the back side is wider than the gap 1 on the entrance side, and on the other side, the width (in the X direction) of the inside of the gap 2 on the back side is provided. An arm 6 having a sliding portion 4 that slides in the depth direction (Y direction) orthogonal to the sliding portion 4 and a penetrating portion 5 that is connected to the sliding portion 4 and penetrates the gap 1 on the inlet side in and out is provided. , The width (width in the X direction) W4 of the sliding portion 4 is wider than the width (width in the X direction) W1 of the gap 1 on the inlet side.

In the sliding bearing structure having such a configuration, the movement of the arm 6 with respect to the space forming portion 3 in the Z direction is restricted, and the movement in the Y direction is permitted. Therefore, one of the space forming portion 3 and the arm 6 is integrated with the support structure (connection, etc.), and the other is integrated with the supported structure (connection, etc.), so that the supported structure with respect to the supported structure is integrated. It is possible to allow the movement in the Y direction while restricting the movement in the Z direction.

How much the movement of the arm 6 with respect to the space forming portion 3 in the X direction (movement of the supported structure with respect to the supported structure in the X direction) is restricted and allowed depends on the width of the gap 1 on the inlet side ( Dimensional relationship between (width in X direction) W1 and width of penetration portion 5 (width in X direction) W5, width of gap 2 on the back side (width in X direction) W2 and width of sliding portion 4 (width in X direction) ) It can be determined by appropriately adjusting the dimensional relationship with W4.

Here, the specific configuration of the sliding bearing structure will be described. The space forming portion 3 is composed of a stopper mounting surface portion 7 and a stopper 8 attached to the stopper mounting surface portion 7, and the stopper 8 is a stopper mounting surface portion 7. It has a spacer portion 9 in contact with the stopper portion 9 and a main body portion 10 separated from the stopper mounting surface portion 7, and a gap 2 on the back side is formed between the main body portion 10 and the stopper mounting surface portion 7.

The spacer portion 9 is made of a plate-shaped or block-shaped metal member, and the main body portion 10 is formed by joining a plurality of steel plates (metal plates). The stopper 8 is attached to the stopper mounting surface portion 7 by a plurality of anchor bolts 11.

In this example, the main body 10 is formed from the base plate 10a, the tip plate 10b parallel to the base plate 10a, the connecting plate 10c connecting both plates 10a and 10b, and the base plate 10a on both the front and back sides of the connecting plate 10c. It is configured by joining a plurality of rib plates 10d extending to the front plate 10b, and as shown in FIG. 1B, the front plate 10b is narrower than the base plate 10a, and the rib plate 10d is also formed. By making the width narrower toward the front plate 10b side, the configuration is made compact.

On the other hand, the sliding portion 4 and the penetrating portion 5 constituting the arm 6 are each made of a metal plate, and are joined and integrated.

Further, in the present embodiment, the sliding portion 4 not only engages with the gap 2 on the back side, but also on the wall surface forming the gap 2 on the back side in the space forming portion 3 and the outer surface of the sliding portion 4. , Each of which is provided with a sliding bearing plate 12, so that the sliding portion 4 is always in contact with the wall surface forming the gap 2 on the back side via the sliding bearing plate 12 (when stationary and when sliding). As a result, it is possible to more reliably prevent damage due to separation and subsequent collisions such as the sliding surfaces 51 and 52 of the conventional sliding bearings, and to maintain a good sliding surface. The sliding bearing plate 12 may be provided only on either the wall surface forming the gap 2 on the back side or the outer surface of the sliding portion 4.

In the sliding bearing structure having the above configuration, by changing (adjusting) the configuration of the stopper 8 (cross-sectional shape, etc.) and the configuration of the anchor bolts 11 (number, etc.), sliding with respect to the gap 2 on the back side of the space forming portion 3 It is possible to easily construct a mechanism according to an appropriate bearing capacity for preventing separation of the portions 4 and a desired movable range.

2 (A) and 2 (B) show an example of a building having the above-mentioned sliding bearing structure. In this example, the supporting structure is the building main body 13, the supported structure is the outer wall 14, and the sliding bearing structure S is provided at a position avoiding the corner portion of the building main body 13 in a plan view, and is provided with the building main body 13. It is connected to the outer wall 14. In the example shown in FIG. 2A, the outer wall 14 is divided into three blocks 14A, 14B, and 14C, which are upper, middle, and lower, and the upper part of the upper block 14A is fixed to the building body 13 and the lower block is fixed. The 14C is supported by a foundation, and the upper portion of the middle block 14B is fixed to the building body 13. A sliding bearing structure S is used to connect the lower portion of the middle block 14B and the building body 13.

Details of the sliding bearing structure S shown in FIGS. 2A and 2B are shown in FIGS. 3A and 3B. As shown in FIGS. 3A and 3B, the penetrating portion 5 of the arm 6 is joined (for example, welded) to the beam 15 constituting the building body 13, while the stopper 8 of the space forming portion 3 is It is attached to a pillar 16 constituting the outer wall 14. That is, a part of the pillar 16 is the stopper mounting surface portion 7. The details of the sliding bearing structure S shown in FIGS. 3A and 3B are the same as those of the sliding bearing structure S shown in FIGS. 1A and 1B, and the description thereof will be omitted in order to avoid duplication.

In the buildings shown in FIGS. 2A and 2B, the sliding bearing structure S is provided at a position avoiding the corners of the building body 13, so that the amount of displacement is particularly large when an external force such as an earthquake or a typhoon is received. Deformation at the enlarged corners (see FIG. 2B) is less likely to be hindered, and the durability of the building can be improved.

It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be variously modified and implemented without departing from the gist of the present invention. For example, the following modification examples can be given.

The sliding bearing structure shown in FIGS. 1 (A) and 1 (B) has a pair (two) of stoppers 8 separated from each other as a set, and the distance between the spacer portions 9 (width W2 of the gap 2 on the back side). The distance between the main bodies 10 (corresponding to the width W1 of the gap 1 on the entrance side) is made smaller than that (corresponding to), and can be schematically shown as shown in FIG. 4 (A). Then, it is conceivable that the sliding bearing structure of the present invention is configured as shown in FIGS. 4 (B) to 4 (D), for example.

That is, the sliding bearing structure shown in FIG. 4 (B) does not have two stoppers 8 but has only one stopper 17, which is the main body of the two stoppers 8 shown in FIG. 4 (A). The portions 10 are integrated with each other, a slit (through hole) 18 is provided in the integrated portion, and the through portion 5 of the arm 6 is passed through the slit 18.

The sliding bearing structure shown in FIG. 4C has three stoppers 8 arranged in a staggered pattern as a set, and the sliding portion 4 of the arm 6 is configured to slide over the three stoppers 8. There is.

The sliding bearing structure shown in FIG. 4D has two pairs (four in total) of stoppers 8 as a set, and the sliding portion 4 of the arm 6 is configured to slide over the two pairs of stoppers 8. ing.

In the sliding bearing structures shown in FIGS. 4A, 4C, and 4D, only the sliding portion 4 of one arm 6 corresponds to each set of stoppers 8, but the present invention is not limited to this, for example. The sliding portions 4 of the two arms 6 may be made to correspond (slide) to the set of stoppers 8.

In the example shown in FIG. 2A, the outer wall 14 is divided into three blocks, upper, middle, and lower. However, the outer wall 14 may be divided so that there are a plurality of middle blocks 14B. In this case, each middle block It is conceivable to provide a sliding bearing structure S on 14B. Further, the upper block 14A and the lower block 14C may be provided with the sliding bearing structure S.

Further, the outer wall 14 shown in FIGS. 2 (A) and 2 (B) may be either an existing or a new construction, and when it is an existing outer wall, for example, the pillar 16 may be an existing pillar constituting the existing outer wall or reinforces the existing outer wall. It may be a newly built reinforcing column for this purpose.

The buildings shown in FIGS. 2A and 2B are merely examples to which the sliding support structure of the present invention is applied, and the sliding support structure of the present invention has two directions orthogonal to each other when connecting two structures. Relative displacement (movement) in one direction is restricted (fixed), and relative displacement (movement) in the other direction can be used for general purposes as a sliding mechanism. For example, the inner wall is stopped in a ground subsidence building. It can also be applied to applications such as allowing vertical movement and preventing horizontal movement.

Needless to say, the above modified examples may be combined as appropriate.

1 Gap on the entrance side 2 Gap on the back side 3 Space forming part 4 Sliding part 5 Penetrating part 6 Arm 7 Stopper mounting surface part 8 Stopper 9 Spacer part 10 Main body part 10a Base plate 10b Tip plate 10c Connecting plate 10d Rib plate 11 Anchor Bolt 12 Sliding bearing plate 13 Building body (support structure)
14 Outer wall (supported structure)
14A Upper block 14B Middle block 14C Lower block 15 Beam 16 Pillar 17 Stopper 18 Slit 51 Sliding surface 52 Sliding surface S Sliding bearing structure W1 Width of gap on the entrance side W2 Width of gap on the back side W4 Width of sliding part W5 Penetration Width of

Claims (3)

It is a sliding bearing structure provided over a support structure and a supported structure constructed at intervals from the support structure.
A space forming portion for forming a space having a wider gap on the back side than the gap on the entrance side is provided on one of the supported structure and the supported structure.
On the other hand, an arm having a sliding portion that slides in the gap on the inner side in the depth direction orthogonal to the width, and a penetrating portion that is connected to the sliding portion and penetrates the gap on the inlet side inward and outward. Provide,
Ri wider Citea than the width of the width of the inlet side of the gap of the sliding portion,
The space forming portion is composed of a stopper mounting surface portion and a stopper mounted on the stopper mounting surface portion.
The stopper has a spacer portion that comes into contact with the stopper mounting surface portion and a main body portion that is separated from the stopper mounting surface portion.
A space surrounded by a plurality of spacer portions arranged at intervals from each other, the main body portion, and the stopper mounting surface portion, which is a separate body from the main body portion, is formed as a gap on the back side. sliding support structure, characterized in that are. The main body is joined to a base plate, a front plate parallel to the base plate, a connecting plate connecting both plates, and a plurality of rib plates extending from the base plate to the front plate on both the front and back sides of the connecting plate. The sliding bearing structure according to claim 1, wherein the front plate is narrower than the base plate, and the rib plate is narrower toward the front plate side. A building having the sliding bearing structure according to claim 1 or 2.

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