JPH10317517A - Expansion joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an expansion joint which can ensure sufficient followup quantity after the change both in the X- and the Y-direction and is embodied in a simple, sturdy, and ligtweight construction. SOLUTION: A plurality of plates capable of deflecting when an external force is applied are furnished so that their strip faces are positioned mating with one another, and one-side ends are coupled together so that deformation absorbing structures 3 are formed, whose one-side ends are fastened to corner parts of skeletons A and B, wherein the parallel plate-shaped part is overhung to a gap C, and the deformation absorbing structures 3 are secured in place. At this time, the overhung plate-shaped parts of the two structures 3 are arranged intersecting in engagement, and thereto covers 4 are attached so that an expansion joint 1 is accomplished.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an expansion joint for closing a gap in a skeleton.

[0002]

2. Description of the Related Art An expansion joint (hereinafter, simply referred to as a "joint") is used to close a skeleton gap of an adjacent building. This joint can be used in any of the gap width direction (X direction) that widens and narrows the skeleton gap, the gap longitudinal direction (Y direction) along the skeleton surface, and the gap depth direction (Z direction) that generates a step perpendicular to the skeleton surface. Again,
It is generally configured to follow to some extent and not to cause damage.

[0003]

However, it is more difficult for many conventional joints to secure a variation follow-up amount in the Y direction than in the X direction. The structure becomes complicated. In particular, those that are constructed in buildings that use a so-called seismic isolation
In addition, the structure has to be complicated due to the complex variation in the Y-direction, and the conventional joint may not be able to cope with it.

[0004] In addition, as the amount of fluctuation follow-up increases, the load applied from above increases accordingly. Therefore, the joint must be made to have a durable structure that can withstand the load, and the increase in the thickness and weight of the components is avoided. I can't get it. For this reason, in some cases, it is necessary to reduce the amount of follow-up without stopping and to make necessary work on the wall surface and floor in some cases.

The inventor of the present invention has made intensive studies in view of the above problems, and as a result, has been able to secure a sufficient amount of fluctuation follow-up in both the X and Y directions, and has a simple, lightweight and durable structure. Invented a new joint.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a deformation-absorbing structure in which a plurality of plate-like bodies which can be bent by receiving an external force are arranged side by side in a face-to-face state. It is characterized in that it is fixed to the end of the skeleton or both ends are slidably supported on the ends of the skeleton on both sides of the skeleton gap, and the parallel plate-like body portion is disposed in the skeleton gap to form a joint.

In this joint, a plurality of plate-like bodies are arranged side by side in a face-to-face state to form a deformation absorbing structure, and one end of the joint is fixed to the body end or both ends are connected to the body ends on both sides of the body gap. The one end on the fixed side of this structure fluctuates integrally with one of the frames, but the other end is an unfixed free end, or both ends are free ends. Thus, it follows the fluctuation in the X direction. In addition, since the respective plate-like bodies are connected in a face-to-face state, they flex appropriately according to the fluctuation in the Y direction, and thereby follow the fluctuation in the Y direction. In addition, since the load applied from above acts on each plate-like body in a direction orthogonal to the plate surface, the strength of the joint with respect to the load is increased.

In the joint according to the present invention, a plurality of plate-like members which can be bent by receiving an external force are arranged side by side in a face-to-face state, and their ends are connected to form a deformation absorbing structure. Side is fixed to the end of the skeleton, the parallel plate-like parts are extended into the gap between the skeletons, and the deformation absorbing structures are installed at the ends of the skeleton on both sides of the gap between the skeletons. It is possible to have a configuration in which the plate-like body portions are arranged so as to mesh with each other.

Further, a plurality of plate-like bodies which can be bent by receiving an external force are arranged side by side in a face-to-face state, and one end or both ends thereof are connected to form a deformation absorbing structure. It is fixed to the end of the skeleton on one side of the gap, the parallel plate-shaped body part is extended into the skeleton gap, and from the skeleton on the other side of the skeleton gap,
A support is extended over the lower surface of the deformation absorbing structure so as to be substantially in contact with or in proximity to the deformation absorbing structure, and the support is formed with restriction portions for restricting both side positions of the distal end of the deformation absorption structure. It can be a joint having a configuration. In the case of this joint, each plate-like body of the deformation absorbing structure is reliably deformed, and the fluctuation following in the Y direction can be ensured accordingly.

[0010] In addition, a plurality of plate-like bodies which can be bent by receiving an external force are arranged side by side in a face-to-face state, and a locking portion is formed below the plate-like bodies to form a deformation absorbing structure. It is also possible to use a joint having a configuration in which the parallel plate-like body portion of the above-mentioned structure is fixed on the end of the skeleton and is supported on the support in a state where the locking portion has passed over the above-mentioned support projection. In the case of this joint, when the fluctuation width becomes large, it is possible to prevent the deformation absorbing structure from falling off by the engagement between the locking portion and the support projection.

[0011] Each of the deformation absorbing structures,
It is preferable that each plate-like body is formed to have a long hole in the longitudinal direction, and has a configuration in which a bar is inserted and connected to each long hole. In this case, the face-to-face state of each plate-like body is reliably maintained, and the strength against the applied load is increased accordingly, so that sufficient strength can be secured even if the width of the plate-like body is reduced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

The joint 1 according to the present invention is constructed so as to close the gap C between the adjacent frames A and B as shown in FIGS. The frames A and B are concrete slabs constructed on the floor of a building, and their opposing corners are appropriately cut off. The joint 1 is installed at both corners of the cut, and the extra space is filled with mortar. In the following description, it is assumed that both the frames A and B are buildings that employ a so-called seismic isolation structure, and that both gaps can cause mixed fluctuations in the X and Y directions or in both directions.

As shown in FIGS. 1 and 2, the joint 1 fixes the supports 2 and 2 so as to face the corners of the frames A and B, and attaches the deformation absorbing structure 3 to the supports 2 and 2. And one end of each of the support members 2 and 3, the deformation absorbing structures 3 and 3 are bridged over the gap C, and the support members 2 and
2 is closed.

As shown in FIGS. 1 to 3, the support 2 has a rectangular bottom portion having an X-direction width w1 and a longitudinal width w2 respectively set corresponding to the width of the gap C and the longitudinal depth. 5, side walls 6 of an appropriate height are formed on three sides thereof,
The side wall portion 6 is formed as a restricting portion for restricting both sides in the X or Y direction of the deformation absorbing structure 3, and a peripheral edge portion 7 which is folded outward from an upper end of the side wall portion 6 in an orthogonal direction is formed. Each support 2 is opposed to the open portion 8 where the side wall portion 6 is not formed, while slightly protruding into the gap C, and is fixed by inserting a bolt into an appropriate portion of the receiving bottom portion 5. Further, plate-like fixed terminals 9, 9, 9 each having an insertion hole 9 a are provided so as to protrude from the side wall 6 facing the opening 8. In addition, several fixed terminals 9 may be provided along the Y direction as illustrated,
Two may be provided at both ends in the Y direction.

As shown in FIG. 4, the deformation-absorbing structures 3, 3 have their respective parallel plate-like portions protruding into the gap C, as shown in FIG.
Both of them are slidably combined, and both of them are installed with one end thereof connected to the support 2. In this deformation absorbing structure 3, a plurality of plate-like bodies 10 having a length approximately twice the width w1 of the receiving bottom 5 of the support 2 are arranged side by side, and a metal shaft rod 11 is inserted into one end thereof. And connected in a comb shape. Each plate-like body 10 may be made of metal such as stainless steel or aluminum which can be bent by receiving an external force, has a vertically long strip shape as shown in the figure, and stands up so that the respective strip faces 10a maintain the facing state with each other. The shaft 11 is inserted. Further, when the shaft rod 11 is inserted and connected, as shown in FIG.
Is interposed. In this way, an appropriate gap is formed between the adjacent plate-like bodies 10 so that the plate-like bodies 10 of the respective structures 3 alternately face each other ((B) in the same figure).
The meshing intersection 13 is formed by the overhanging plate-shaped body portion, and the meshing intersection 13 is straddled between the supports 2 and 2. The roller washer 12 not only forms a gap, but also enables each plate-shaped body 10 to maintain a facing state.

It is preferable in terms of the strength of the joint 1 that the adjacent plate-like members 10 be in contact with each other without any gap, but the gap may be formed by adjusting the size of the roller washer 12. Good. In the case of contact, it is preferable to apply a fluororesin process to the strip surface 10a or to apply a process of reducing the coefficient of friction by simply attaching a sheet material for improving the slip (hereinafter simply referred to as "sliding process"). . In addition, the greater the thickness, the higher the strength against the load. An appropriate thickness in relation to an increase in weight is about 0.3 cm. In addition, each plate-like body 1
0, as shown in the figure, is not a single sheet,
It may be easy to bend by forming a groove in the longitudinal direction of the strip surface 10a.

The cover members 4 and 4 are made of a metal material such as stainless steel or aluminum, and the outer peripheral shape thereof is
Is a rectangular plate formed so as to be substantially equal to the outer shape of the peripheral portion 7 of FIG. Each cover member 4 is, as shown in FIG.
Placed on each peripheral portion 7 of each support 2, the peripheral portion 7
It is screwed and fixed to the part facing the above. Although not shown, each cover member 4 preferably has an anti-slip material made of vinyl chloride or the like adhered to the surface on the front side.

The joint 1 having the above configuration is constructed as follows. First, the corners of the frames A and B are appropriately cut off, and the supports 2 and 2 are fixed to face each other. At this time, the supports 2 and 2 are positioned and fixed so that the overlapping width w3 of the meshing intersection 13 of the deformation absorbing structure 3 is equal to w1, and then, an extra space is filled with mortar or the like. . Subsequently, the deformation absorbing structures 3 are placed in the respective supports 2. At this time, one end of each of the shaft rods 11 and 11 is inserted into the fixed terminal 9, and as shown in FIG.
And the roller washers 12 are alternately inserted, and the other end of each shaft rod 11 is inserted into the fixed terminal 9 so as to be connected. Then, the deformation absorbing structures 3, 3 are respectively protruded into the gaps C to form the meshing intersections 13, and each plate-like body 1
0 is placed on each of the opposing supports 2, and the meshing intersection 13 is straddled between the supports 2. Then, the cover members 4, 4 are placed on the peripheral portion 7 of the support 2, and the cover member 4 is fixed by screwing or the like, and the meshing intersection of the support 2, 2 and the deformation absorbing structure 3. 13 and cover material 4, 4
Closed by At this time, a metal plate (not shown) similar to the cover member 4 may be placed on the meshing intersection 13 as well.

When the gap C that closes the joint 1 fluctuates in this way, the joint 1 operates as follows. First, in the case of the fluctuation in the X direction, since the supports 2 and 2 are fixed to the frames A and B, respectively, they fluctuate integrally with the frames A and B, respectively. Then, each support 2 has
Since the deformation absorbing structures 3 are connected to each other, each frame A,
The structure 3 also follows the fluctuation of B. However, at this time, since each of the structures 3 is installed by forming the intersecting intersecting portions 13 in which the respective plate-like members 10 alternately face each other, each of the plate-like members 10 is formed.
Moves in the X direction while maintaining the sliding or facing state with the fluctuation. Then, the overlap width w3 of the meshing intersection 13 changes in accordance with the change in the X direction, and the change in the X direction is effectively absorbed.

The variation width of the joint 1 in this case is, as shown in FIGS. 2 and 6 (A), the portion of the plate-like body 10 excluding the overlapping width w3 of the meshing intersection 13. The width becomes w4. This variation width can be increased by changing the overlapping width w3 of the meshing intersection 13 by appropriately moving the fixing position of the supports 2 and 2 in the X direction. However, when the width w3 is reduced, the strength in the Z direction at the meshing intersection 13 may be reduced accordingly. In order to satisfy both the requirement to ensure the fluctuation width as large as possible and the requirement to secure the strength of the meshing intersection 13, it is preferable to make the width w3 and the width w4 substantially equal as shown in FIG.

Next, when a change in the Y direction occurs, the supports 2, 2 and the cover members 4, 4 change integrally with the frames A, B, while the deformation absorbing structure 3 By changing as follows, the change is absorbed. Each structure 3
Is connected to the plate-like body 10 while maintaining the facing state of each strip face 10a, and both ends thereof are connected to the supports 2, 2, so that after the installation, each strip face 10a is in the horizontal direction, The longitudinal side faces 10b, 10b face the vertical direction. For this reason, each plate-shaped body 10 bends appropriately as shown in FIG. That is, as shown in FIG. 7, the force b generated by the fluctuation in the Y direction acts in a direction perpendicular to each strip surface 10 a, but since each plate 10 is a flexible plate material, the direction in which the force acts is It bends while changing. At this time, since each plate 10 bends in the same manner,
This absorbs the force caused by the fluctuation in the Y direction,
They will follow the fluctuations. At this time, since the side walls 6, 6 of the supports 2, 2 abut against the plate-shaped body 10 outside the deformation absorbing structure 3, the deformation of the deformation absorbing structure 3 is reliably performed. Will be

On the other hand, the joint 1 has a deformation absorbing structure 3
, The strength against the load from the Z direction is increased. That is, in each plate-like body 10, the strip surface 10a faces in the horizontal direction, and the longitudinal side surfaces 10b, 10b
7, the stress is generated when a compressive load is applied to the deformation absorbing structure 3 from the Z direction, that is, when a vertical force d is applied to the side surface 10b as shown in FIG. I do. Since this stress shows an extremely large value as compared with a case where a force perpendicular to the strip surface 10a acts, the strength of the joint 1 with respect to the load is increased accordingly.

As described above, the joint 1 of the present invention
Even if the gap width is large and it is necessary to increase the fluctuation follow-up amount in the X direction, the length of each plate-like body 10 of the deformation absorbing structure 3 and the overlapping width w3 of the meshing intersection 13 are set to the width of the gap C in the X direction. , A desired fluctuation follow-up amount can be secured. In addition, even if the fluctuation follow-up amount is secured in this way, only the weight increases as the length of the plate-shaped body 10 increases, and the strength with respect to the applied load does not decrease. Further, even if the thickness of the plate-shaped members 10 is not increased more than necessary, it is possible to sufficiently secure the strength with respect to the load by bringing the adjacent plate-shaped members 10 into close contact or reducing the installation interval.

In addition, since the plate 10 is stored in the supports 2 and 2 in the upright state, the plate 10 can easily bend in the Y direction, thereby effectively absorbing fluctuations in the Y direction. Will do. As described above, the joint 1 of the present invention can secure a sufficient amount of follow-up in both the X and Y directions and a sufficient strength against a load while having a simple and lightweight structure.

Next, the deformation absorbing structure 53 shown in FIG. 8 will be described. The deformation absorbing structure 53 is provided with a large number of plate-like members 52 having a length that is appropriately longer than twice the width w1 of the receiving bottom 5 so that the strip surfaces 52a can maintain the facing state. By connecting the shaft rods 11 and 11 to both ends of the plate-like body 52, the plate-like bodies 52 are connected in the shape of a blade. In this case, one end is connected to the support 2 in the same manner as the deformation absorbing structure 3, while the other end is placed on the receiving bottom 5 of the opposing support 2 and spans the gap C. Then, as shown in FIG. 9A, a width w6 corresponding to a difference between the width w1 of the receiving bottom 5 and the mounting width w5 of the deformation absorbing structure 53 is secured as a fluctuation width.
The X-direction fluctuation followability can be secured without relying on the sliding action of each plate-like body such as the deformation absorbing structure 3. In addition, when a variation in the Y direction occurs in the gap C, the respective plate-like members 52 are appropriately bent, as shown in FIG. 3B, so that the same variation followability as the deformation absorbing structure 3 can be secured.

In order to facilitate bending against fluctuations in the Y direction, a long hole 52b is formed at one end of each plate-like body 52 in the length direction as shown in FIG. 11 may be inserted. In this case, the shaft 11 moves along the long hole 52b according to the bending, and the bending becomes smooth.

Next, the deformation absorbing structure 63 shown in FIG. 10 will be described. This deformation absorbing structure 63 uses a plate-like body 64 in which a long hole 64 a in the longitudinal direction is formed on the plate surface of each plate-like body 10 as compared with the deformation absorbing structure 3.
The difference is that the shaft 65 is inserted through 4a, but the other parts have the same configuration. In the case of this structure 63, the variation follow-up amounts in the X and Y directions are not different from those of the deformation absorbing structure 3. For example, in the Y direction, as shown in FIG. Since the shaft 65 relatively slides along each of the long holes 64a, a sufficient fluctuation follow-up amount can be secured. However, since each plate-like body 64 is constantly regulated not only by the shaft rods 11 and 11 but also by the shaft rod 65, the movement of the plate-like body 64 to fall down from the standing state.
It is harder to fall down, and it is easier to maintain the standing facing state. As a result, the deformation absorbing structure 63 has higher strength against a load applied from above than the deformation absorbing structure 3. Therefore, each plate-like body 64 can obtain sufficient strength even if the width w7 is reduced. However, if the width w7 is reduced, the applicable range of the cover material to be adhered to the upper surface is increased or the thickness is reduced. It can be used, and the weight of the structure 63 itself can be reduced. In addition, it is also possible to use a plastic material instead of a metal material for each plate-like body 64, and further weight reduction can be achieved.

In the deformation absorbing structure 53 described above, a long hole 52b is formed in each plate-like body 52.
A long hole similar to the plate-like body 64 may be formed, and if a shaft is inserted into each of the long holes to form a connection structure of a total of three shafts, the strength in the Z direction can be increased.

FIG. 1 shows a joint according to the present invention.
As shown in FIG. 2, a joint 71 may be used.
The joint 71 is provided at the corners of the frames A and B
2 and 72 are fixed, and both ends of the deformation-absorbing structure 73 are slidably supported by the supports 72 and 72 while being slid over the frame gap C. The ends are closed by cover members 74, 74. The support 72 is elongated along the gap Y direction, has a support protrusion 72a at the end of the gap extending side, and has a locking portion 72b at the opposite end of the support protrusion 72a. The support projection 72a has a side wall 72c as shown in FIG. As shown in FIG. 14, the deformation absorbing structure 73
Plate-like body 7 having locking projections 75a formed at longitudinal ends
5 are arranged side by side in an upright state, and are connected by inserting shaft rods 76, 76 into both ends in the longitudinal direction of each plate-like body 75. The parallel plate-like body portions are supported by support protrusions 72a, 72. And spans the gap C.

The joint 71 is connected to the deformation absorbing structure 7
3 is supported slidably while being supported by the support protrusions 72a and 72, so that when a change in the X direction occurs,
The supports 72, 72 and the cover members 74, 74 are composed of the frames A, B
When the deformation absorbing structure 73 slides along these while integrally moving, the fluctuation can be absorbed without difficulty. At this time, even if the fluctuation width is large, each locking projection 75a is not caught by the support projections 72a, 72a, and the deformation absorbing structure 73 does not come off the support 72 and fall into the gap C. On the other hand, in the variation in the Y direction, each plate 75
Bends in response to the fluctuation, and furthermore, the deformation is regulated by the side wall portions 72c at both ends, so that the deflection is ensured, and the fluctuation follows without difficulty.

The effect of the joint 71 is as follows.
When compared with a case where a known curved plate-like cover material 77 as shown in FIG. 15 is used instead of the deformation absorbing structure 73, it is clear that the variation followability in the Y direction is particularly excellent. In the case of a plate member such as the cover member 77, the frame greatly changes in the Y direction, and the end portion 77a becomes a side wall portion 72c of the support member 72.
If it comes into contact with, the movement is regulated, and further follow-up cannot be secured. However, the deformation absorbing structure 73 is
Even if the outermost plate-shaped member 75 abuts on the side wall portion 72c, each plate-shaped member 75 bends, so that the plate-shaped member 75 further follows the fluctuation, and a large amount of follow-up can be secured. Further, it goes without saying that the deformation absorbing structure 73 is superior to the cover member 77 with respect to the load in the vertical direction, as in the case of the joint 1 described above.

The deformation absorbing structure 73 may have a comb-like meshing structure like the deformation absorbing structure 3. In this case, a long hole in the length direction is formed in each plate 75. If a shaft is inserted through each of the long holes, the strength against the load in the vertical direction can be increased.

The description of the above embodiment is an example of the present invention, and other embodiments other than the above can be considered. For example,
The receiving bottom 5 of the support 2 may not be in the form of a plate, but may be in the form of a lattice or a net, or may have a structure in which the side wall 6 is not formed. When installing the deformation absorbing structure 3, the support 2 may be fixed to only one side of the corner of the skeleton, and the deformation absorbing structure 3 may be installed on the support 2.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a construction state of a joint according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a partially omitted perspective view showing a main part of the joint.

FIG. 4 is a partially omitted perspective view showing an example of a deformation absorbing structure.

FIG. 5A is an explanatory view showing an example of an assembling process of a deformation absorbing structure, and FIG. 5B is an explanatory view showing an example after assembling.

FIG. 6A is an explanatory diagram showing a fluctuation range of a joint,
(B) is an explanatory diagram showing a state in which a fluctuation in the Y direction has occurred.

FIG. 7 is an enlarged explanatory view of a main part showing a state in which a vertical force acts on a strip surface of a plate-like body.

FIG. 8 is a partially omitted perspective view showing another example of the deformation absorbing structure.

FIG. 9A is an explanatory diagram showing a variation width according to another example of the joint, and FIG. 9B is an explanatory diagram showing a state in which a variation in the Y direction has occurred.

FIG. 10 is a perspective view showing still another example of the deformation absorbing structure.

11A is an explanatory diagram showing a variation width by the joint in FIG. 10, and FIG. 11B is an explanatory diagram showing a state in which a variation in the Y direction has occurred.

FIG. 12 is a cross-sectional view showing another example of construction of the joint according to the present invention.

13 is an enlarged perspective view showing a main part of the support shown in FIG. 12;

14 is a perspective view showing an example of the deformation absorbing structure of FIG.

FIG. 15 is a perspective view showing a conventional cover member.

[Explanation of symbols]

 1,71 Joint 2,72 Support 3,53 Deformation absorbing structure 4 Cover material 10,52 Plate 10a Strip 63,73 Deformation absorbing structure 64,75 Plate 72a Support projection 75a Locking projection

Claims (5)

[Claims] 1. One end of a deformation absorbing structure comprising a plurality of plate-like bodies which can be bent by receiving an external force in a face-to-face state is fixed to one end of a skeleton or both ends are skeletons on both sides of a skeleton gap. An expansion joint having a configuration in which a parallel plate-like body portion is slidably supported at an end portion and disposed in a skeleton gap. 2. A plurality of plate-like bodies which can be bent by receiving an external force are arranged side by side in a face-to-face state, and one end thereof is connected to form a deformation absorbing structure. Sticks to
The parallel plate-like parts are extended into the skeleton gap, the above-mentioned deformation absorbing structures are installed at the ends of the skeleton on both sides of the skeleton gap, and the overhanging plate-like parts of both structures are interlocked with each other. An expansion joint having a configuration of being arranged. 3. A deformation absorbing structure is formed by arranging a plurality of plate-like bodies that can bend under external force in a face-to-face state, and connecting one end or both ends thereof to form a deformation absorbing structure. It is fixed to the end of the skeleton on one side of the gap, the parallel plate-like body part is extended into the skeleton gap, and the skeleton on the other side of the skeleton gap is almost in contact with or close to the lower surface of the deformation absorbing structure An expansion joint having a configuration in which a support is extended so as to form a restricting portion for restricting both sides of the tip of the deformation absorbing structure. 4. A plurality of plate-like bodies which can be bent by receiving an external force are arranged side by side in a face-to-face state, and a locking portion is formed below the plate-like bodies to form a deformation absorbing structure. An expansion joint fixed to an end of a skeleton, wherein a parallel plate-like body portion of the above-mentioned structure is supported on a support in a state in which a locking portion goes over the above-mentioned support projection. 5. The deformation absorbing structure according to claim 1, wherein each of the plate-shaped members is formed to have a long hole in a length direction, and a bar is inserted into each of the long holes and connected. Claims 1-4
An expansion joint according to any one of the above.