JP3328544B2 - Expansion joint structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion joint structure used as a connecting floor for interconnecting a plurality of buildings.

[0002]

2. Description of the Related Art Conventionally, an expansion joint structure is disclosed in, for example, Japanese Utility Model Laid-Open No. 58-23909. In this expansion joint structure, one end of the plate-like body is slidably connected to the end of the passage of the first building in a direction orthogonal to the passage by a guide groove. In addition, the other end of the plate-shaped body is slidably mounted on the passage of the second building in a state where the other end of the plate-like body is vertically bent and urged downward with respect to the passage of the second building. .

When the first and second buildings relatively move in the horizontal direction in the direction of the passage and in the direction perpendicular to the passage as in the case of an earthquake, the plate-shaped body has the other end on the second side. It slides in the horizontal direction by sliding on the passage of the building or by sliding one end side along the guide groove. Meanwhile, the first
When the second building and the second building move relatively in the vertical direction,
The plate-like body is bent at the other end side and moves in the vertical direction.
As described above, even if the first and second buildings relatively move in the horizontal direction or the vertical direction, the plate-like body slides in the horizontal direction or bends in the vertical direction to move the first and second buildings. The construction between the buildings is maintained.

[0004]

However, in such an expansion joint structure, when the first and second buildings are relatively twisted in the vertical direction, one corner of one end of the plate-like body rises. I do. For this reason, the plate-like body is deformed, and the other end of the plate-like body supports only one end of the plate-like body, and the plate-like body is extremely unstablely placed on the building. State. Further, when the degree of the above-mentioned twist is remarkable, the expansion joint structure is damaged. Thus, when the first and second buildings are twisted relatively in the vertical direction, this expansion joint structure becomes extremely dangerous due to deformation or damage, and cannot be used as a passage after an earthquake. there were.

Accordingly, an object of the present invention is to provide an expansion joint structure that can cope with a torsional movement in addition to a horizontal or vertical movement of a building during an earthquake or the like.

[0006]

According to a first aspect of the present invention, there is provided an expansion joint structure comprising: a rectangular plate-like body having a tapered surface on a lower surface along three sides; A first building having a recess having a tapered surface substantially corresponding to the tapered surface of the plate-shaped body and having one side of the plate-shaped body fitted therein, and one side having no tapered surface of the plate-shaped body. And a universal joint that connects a substantially central portion to the second building.

In the above expansion joint structure, when the first and second buildings move horizontally so as to approach each other relatively in the direction of the passage, the plate-like body having a tapered surface on the lower surface along three sides is: The tapered surface at one end of the plate-like body in the passage direction is slid on the tapered surface of the recess of the first building abutting on the tapered surface, and is smoothly run on the floor surface of the first building.

When the first and second buildings move horizontally so as to be relatively separated from each other in the direction of the passage, the plate-like body moves over the recess of the first building fitted with the plate-like body. You can slide.

When the first and second buildings are relatively horizontally moved in a direction perpendicular to the passage, the plate-like body has a tapered surface on the lower side of the plate-like body. Is slid on the tapered surface on the side of the recess of the first building, and smoothly rides on the floor of the first building.

When the first building moves to a position higher than the second building, the plate-like body is bent upward about the universal joint.

When the first building moves to a position relatively lower than the second building, the plate is inclined downward about the universal joint, and one end of the plate is moved. Is slid over the tapered surface of the recess of the first building. At this time, the tapered surface at one end of the plate-like body slides on the tapered surface of the recess of the first building, so that there is no gap between the passage of the first building and the plate-like body, and the plate-like body smoothly moves. First
And the upper surface of the plate-shaped body of the building.

On the other hand, when the first and second buildings are relatively twisted in the horizontal direction, the plate-like body is formed such that the tapered surface on the lower side of the plate-like body is a recess of the first building 1. Is slid on the tapered surface on the side of the first building, and smoothly rides on the floor of the first building.

When the first and second buildings are relatively twisted in the vertical direction, the plate-like body has one end of the plate-like body placed on the recess of the first building. As it is, the plate-like body is rotated around the universal joint, which is located substantially at the center of the other end. Therefore, even if the first and second buildings are relatively twisted in the vertical direction, the first and second buildings can be connected without breaking the plate-shaped body. Further, since the plate-like body rotates about the universal joint at the approximate center of the other end, the displacement on both sides of the plate-like body can be reduced. Therefore, the plate-like body can be safely used as a passage for evacuation or the like.

According to a second aspect of the present invention, in the expansion joint structure according to the first aspect, the expansion joint structure connects the plate-like body and the second building and cuts when a predetermined shearing force is applied. It is characterized by being provided with a trigger pin.

According to the second aspect of the present invention, when no earthquake occurs, the plate is supported by the universal joint and the trigger pin because the trigger pin is not cut. Therefore, as compared with the case where the plate is fixed only by the universal joint, the plate can be fixed more reliably, and the pedestrian who crosses the plate does not feel uneasy.

On the other hand, when a large force is applied to the trigger pin during an earthquake and the trigger pin is sheared, the plate can freely tilt or twist around the universal joint.

According to a third aspect of the present invention, in the expansion joint structure according to the first or second aspect,
The expansion joint structure includes an adjustment bolt for adjusting the height of the universal joint.

According to the third aspect of the present invention, when a difference in height between the first and second buildings occurs due to uneven settlement of the support ground of the first or second building or the like, the above-mentioned free operation is performed. The height of the joint can be adjusted with an adjusting bolt to keep the plate-like body horizontal.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments.

FIG. 1 is a plan view showing an embodiment of an expansion joint structure. FIG. 2 is a sectional view taken along line AA of FIG.

This expansion joint structure
As shown in FIGS. 1 and 2, a first building 1 and a second building 2
Is provided with a rectangular plate-like body 3 erected at the center. At one end of the plate 3, tapered surfaces 5, 6, 7 are formed on the lower surface 4 of the plate 3 along three sides of the plate 3.

The first building 1 has a substantially truncated pyramid-shaped recess 8 to be fitted to the lower surface 4 of the plate-like body 3.
As shown in FIG. 1, the recess 8 having a substantially truncated pyramid shape
When viewed from the side wall 9 of the building, the innermost and both sides are tapered surfaces 26,
25 and 27, and the side wall 9 is open.
The surface of the recess 8 is, as shown in FIG.
The metal plate 31 is buried and reinforced in concrete.

On the other hand, a substantially central portion on the other end side of the plate-like body 3 is joined to the second building 2 by a universal joint 10, as shown in FIG. As shown in FIG. 2, the universal joint 10 vertically joins a vertical portion 12 to the lower surface of the other end of the plate member 3, and centers the vertical portion 12 in the width direction (the width direction of the plate member 3). (Center of the sphere), a hemispherical depression or ball seat 33 is provided, and the ball part 11 integrally formed with the support 13 embedded and fixed in the second building 2 is fitted into the ball seat 33. .

Accordingly, the plate 3 is fitted at one end thereof into the recess 8 of the first building 1 so as to be slidable in all directions in the horizontal direction, and at the other end thereof through the universal joint 10. Is connected rotatably to the building 2 in all directions.

Further, as shown in FIGS. 1 and 3, a quarter of the other end of the plate 3 in the width direction is connected to the second building 2 by a trigger pin 14. Both ends of the trigger pin 14 are connected to the plate 3 and the support 1 respectively.
3 to prevent the plate-shaped body 3 from rotating around the sphere 11, that is, fix the plate-shaped body 3 firmly to the second building 2, making the pedestrian uneasy. I try not to give a feeling. The trigger pin 14 is made of, for example, plastic or the like. As shown in FIG. 3, the diameter of the central portion of the trigger pin 14 is reduced, and when a predetermined or more shear force is applied due to an earthquake or the like, the small diameter portion 14a has priority. It is designed to break.

The gap between the plate 3 and the second building 2 is covered by an upper cover 15 extending between the plate 3 and the second building 2 so that a person or an object can pass therethrough. Making it easier.

This expansion joint structure is
It works as follows during an earthquake.

When the first building 1 and the second building 2 move horizontally in the direction of relatively approaching the passage, the tapered surfaces 5, 6, 7 are formed on the lower surface along three sides. Plate 3
Slides the tapered surface 6 at one end in the direction of passage of the plate-like body 3 onto the tapered surface 26 of the recess 8 of the first building 1 abutting on the tapered surface 6, so that the floor of the first building 1 Ride smoothly on the surface. When the first building 1 and the second building 2 move horizontally in a direction relatively separated in the direction of the passage,
The plate 3 slides on the recess 8 of the first building 1.

When the first building 1 and the second building 2 relatively horizontally move in the direction orthogonal to the passage, the plate-like body 3
Slides the lower tapered surface 5 or 7 of the plate-like body 3 onto the tapered surface 25 or 27 on the side of the recess 8 of the first building 1 to thereby make the floor surface of the first building 1 Ride up smoothly.

When the first building 1 is relatively twisted in the second building 2 in the horizontal direction, the plate 3 is
The lower tapered surface 5 or 7 slides on the tapered surface 25 or 27 on the side of the recess 8 of the first building 1 to smoothly ride on the floor of the first building 1. FIG. 4 shows that when the first and second buildings 1 and 2 are twisted and moved in the horizontal direction,
Or, the state of the plate-shaped body 3 when it is horizontally moved in the horizontal direction is shown.

Thus, when the first building 1 and the second building 2 relatively move horizontally or when the first building 1 and the second building 2 are relatively horizontally twisted. Since the plate-like body 3 rides on the tapered surfaces 25 and 27 on the sides of the recess 8 of the first building 1, the plate-like body 3 is smoothly connected to the first building 1 without being damaged.

When the first building 1 moves to a position relatively higher than the second building 2, the plate 3 bends upward about the universal joint 10.

When the first building 1 moves to a position relatively lower than the second building 2, the plate 3 bends downward around the universal joint 10 so that the plate 3 The tapered surface 6 at one end slides on the tapered surface 26 of the recess 8 of the first building 1. At this time, since the tapered surface 6 of the plate-like body 3 slides on the tapered surface 26 of the recess 8 of the first building 1, the first
The first building 1 and the plate-shaped body 3 are smoothly connected without any gap between the passage of the building 1 and the plate-shaped body 3.

When the first building 1 and the second building 2 move relatively vertically, the plate 3 is bent by the universal joint 10, so that the first building 1 and the second building 2 The second building 2 is connected smoothly.

Further, when the first building 1 and the second building 2 are relatively twisted in the vertical direction, the plate-like body 3 is rotated in the twisting direction by the universal joint 10, so that it is not broken. , The first building 1 and the second building 2 can be connected. In particular, since the universal joint 10 is provided substantially at the center of the plate-like body 3 and the plate-like body 3 rotates around the central portion where the universal joint 10 exists, the displacement of the plate-like body 3 on both sides is displaced. Can be reduced.

Therefore, the first building 1
The plate-like body 3 is not broken by the action of the universal joint 10 even when the first building 1 and the second building 2 are relatively moved up and down or twisted, so that the first building 1 and the second building 2 are not broken. 2 can be restored or maintained, and a person can safely move between the first building 1 and the second building 2 even after the end of the earthquake.

Further, since the expansion joint structure has the trigger pin 14, when no earthquake or the like occurs, the trigger pin 14 is not cut off. 14
Supported by Therefore, compared with the case where the plate 3 is fixed only by the universal joint 10, the plate 3 can be reliably fixed to the rotation, and a pedestrian who crosses the plate 3 does not feel uneasy. On the other hand, when a large force is applied to the trigger pin 14 and the trigger pin 14 is sheared, as in the case of an earthquake, the plate-shaped body 3 is tilted or twisted freely around the universal joint 10, and the first and second plates are bent. The connection state of the second buildings 1 and 2 can be restored or maintained, and even after the earthquake,
Between the first building 2 and the second building 2 can be safely moved.

FIG. 5 shows another embodiment. 1 and 2, the height of the universal joint 10 is fixed, but in the embodiment of FIG. 5, the height of the universal joint 20 can be adjusted so that We are prepared to deal with subsidence. 5, the same parts as those in FIG. 2 are denoted by the same reference numerals, and the description thereof will be omitted. As shown in FIG. 5, a support 16 is arranged in a box-shaped metal member 17 buried in a side wall of the second building 2. The support 16 is formed integrally with the sphere 11 protruding from the box-shaped metal member 17. The support 16 is supported by a height adjusting bolt 19 provided at a lower portion of the box-shaped metal member 17 so as to be able to move up and down against a spring 18 provided at an upper portion of the box-shaped metal member 17. .

Therefore, by adjusting the height adjusting bolt 19, the height position of the ball portion 11 of the universal joint 20 can be freely changed, and the plate 3 can be held horizontally. In other words, the universal joint 20 whose height can be adjusted is provided between the first building 1 and the second building 1 caused by uneven settlement of the supporting ground of the building.
Can also accommodate differences in the height of the building 2.

[0040]

As is apparent from the above description, according to the expansion joint structure of the first aspect, a rectangular plate having a tapered surface on the lower surface along three sides and a tapered surface of the plate are formed. A first building having a tapered surface substantially corresponding to the lower surface of one side and having a recess to which one side of the plate-shaped body is fitted, and a first building having no tapered surface of the plate-shaped body Since it has a universal joint that connects a substantially central portion of the side to the second building, not only relative movement in the horizontal and vertical directions of the first and second buildings, but also twisting movement, The connection between the first building and the second building can be restored or maintained without the plate-shaped body being deformed or damaged, and a person can safely move between the first and second buildings even after the end of the earthquake.

The expansion joint structure according to the second aspect of the present invention has a trigger pin that connects the plate-like body and the second building and is cut off when a predetermined shearing force is applied, so that no earthquake occurs. In this case, the trigger pin is not cut, and the plate is supported by the universal joint and the trigger pin. Therefore, as compared with the case where the plate-like body is fixed only by the universal joint, the plate-like body can be more reliably fixed to the rotation, and the pedestrian who crosses the plate-like body does not feel uneasy. On the other hand, when a large force is applied to the trigger pin during an earthquake and the trigger pin is sheared, the plate-like body can freely tilt or pivot around the universal joint, and can be moved in a relative direction such as a horizontal direction, a vertical direction, or a twist. I can deal with it.

Since the expansion joint structure according to the third aspect of the present invention includes the adjusting bolt for adjusting the height of the universal joint, the first and second structures are caused by uneven settlement of the support ground of the first or second building. When a difference in height occurs between buildings, the height of the universal joint can be adjusted with an adjustment bolt to keep the plate-shaped body horizontal.

[Brief description of the drawings]

FIG. 1 is a plan view of an expansion joint structure according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a vertical sectional view of a portion of a trigger pin in FIG. 1;

FIG. 4 is a cross-sectional view showing an expansion joint state after the building has moved.

FIG. 5 is a longitudinal sectional view of an expansion joint structure according to another embodiment.

[Explanation of symbols]

1 ... first building, 2 ... second building, 3 ... plate,
4 ... lower surface, 5, 6, 7, 25, 26, 27 ... tapered surface, 8
... recesses, 10, 20 ... universal joints, 14 ... trigger pins, 19 ... height adjustment bolts.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04B 1/62-1/72

Claims (3)

(57) [Claims] 1. A rectangular plate having a tapered surface on a lower surface along three sides, a tapered surface substantially corresponding to the tapered surface of the plate, and one side of the plate is fitted. A first building having a concavity to be formed, and a substantially central portion of one side of the plate-shaped body having no tapered surface being a second building.
An expansion joint structure having a universal joint that connects to a building. 2. The expansion joint structure according to claim 1, further comprising a trigger pin that connects the plate-like body and the second building and is cut off when a predetermined shearing force is applied. Expansion joint structure. 3. The expansion joint structure according to claim 1, further comprising an adjusting bolt for adjusting a height of the universal joint.