JPH10121586A - Expansion joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an expansion joint, which does not damage a cover material stretched over a void and does not form a clearance between the exansion joint and an internal wall. SOLUTION: In the expansion joint, an intermediate plate 3 and two end plates 2, which cover void sections at both ends of the intermediate plate 3 and in which parts are superposed to the end sections of the intermediate plate 3, are installed, and each end plate 2 is supported by a support structure section 4 so that each end plate 2 is slid freely in the void cross direction and can be slid automatically in the void longitudinal direction, and stretched over voids C. Support members 7, 7 are connected to a base material 6, in which inclined slots are formed to side face sections, by bolts to constitute the support structure section 4, and the slots related to the both connection of both support members 7, 7 are used as guide sections, by which each end plate 2 can be slid automatically by its own weight.

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 is shown in FIG.
, 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. In general, the apparatus is configured so as to absorb the fluctuation to some extent and absorb the fluctuation so as not to cause breakage.

[0003]

However, in many of the conventional joints, the amount of follow-up in the X-direction is relatively large, but the amount of follow-up in the Y-direction is relatively small. There are many things. So, for example,
If the joint is installed in a floor and inner wall perpendicular to each other, the fluctuation in the Y direction cannot be absorbed, and the end of the cover material that spans the gap abuts against the inner wall and breaks. There is a disadvantage that a gap is easily formed between the material and the material. Especially in the case of a large-scale earthquake, when building in a building that adopts a so-called seismic isolation structure with laminated rubber etc. between the building and the foundation, when the earthquake occurs, the complex in which the fluctuations in the X and Y directions are mixed There is a problem that the possibility of damage due to fluctuations increases.

[0004] In view of such a problem, the present inventor has proposed
The present inventors have conducted intensive studies to provide a joint that does not damage the cover material spanning the gap or form a gap with the inner wall. The present inventor has developed a joint suitable for a building adopting a seismic isolation structure, which exhibits sufficient followability not only in the gap width direction but also in the gap longitudinal direction when the floor and the inner wall are orthogonal to each other. That is what led to it.

[0005]

In order to solve the above-mentioned problems, a joint according to the present invention comprises a middle plate for closing a skeleton gap while leaving both ends in the longitudinal direction of the gap appropriately, and a gap between the remaining both ends. And two end plates that partially overlap the ends of the middle plate are provided, and each end plate is slidable in the gap width direction and automatically slidable in the gap longitudinal direction. As described above, the first plate is supported by the first support structure provided on one side of the frame, and the intermediate plate is supported by the second support structure so as to be slidable at least in the gap width direction. The connection between a guide portion in which each end plate is inclined so that each end plate can automatically slide in the longitudinal direction of the gap by its own weight, and a support member slidably engaged with the guide portion. It is characterized in that it is configured via

In the joint of the present invention, the first support structure for supporting each end plate is formed by connecting the guide and a support member slidably engaged with the guide. It is characterized in that each end plate is automatically slidable in the longitudinal direction of the gap. In addition, by arranging the middle plates so that their ends overlap each end plate, each end plate and the middle plates slide relative to each other with the fluctuation in the gap longitudinal direction, and Y
A change in direction can be absorbed.

The joint according to the present invention is preferably configured such that the intermediate plate is configured to be slidable in the longitudinal direction of the gap and to be automatically slidable toward the center, thereby forming the second support structure. . In this way, not only the end plates but also the middle plate can be automatically slid, so that when the fluctuations stop, the arrangement of the end plates and the middle plate is restored to the original position.

In the above-mentioned second support structure, an example of a structure in which the intermediate plate can be automatically slid toward the center portion is a guide portion in which the sliding portion is inclined in the longitudinal direction of the gap. And a guide member which is slidably engaged with the guide member. The guide portion is formed such that the central portion is located at the lowest position and is gradually inclined upward on both sides. Preferably, it is V-shaped.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments as an example of an expansion joint according to the present invention will be described.
This will be described in detail with reference to the drawings.

FIG. 1 shows a joint 1 according to the present invention constructed so as to close a gap C between adjacent skeletons A and B, and a joint 51 of an arbitrary construction constructed so as to close a gap between inner walls D and E. It is shown. The joint 1 is a skeleton A, which is a concrete slab constructed on the floor of the building,
It is constructed by cutting off the corners of B and filling the extra space with mortar. Upright inner walls D and E are provided at both ends of the frames A and B in the Y direction.

As shown in FIGS. 2 and 3, the joint 1 is formed by bridging the end plates 2, 2 and the intermediate plate 3 with a gap C, and connects one end of the end plates 2, 2 in the X direction to a frame. By fixing the middle plate 3 to the supporting structure 5 also fixed to the skeleton A side, the gap C is fixed to the supporting structure 4 fixed to the side A.
Is to be closed.

The end plates 2 and 2 are spanned over the gap C to form a frame A
And the width in the X direction is set so that the mounting widths W1 and W2 that can be mounted on the upper surface of the frame B are secured, and the gaps left at both ends of the middle plate 3 when the intermediate plate 3 is bridged over the gap C are covered. The width in the Y direction that can be closed is provided assuming the fluctuation width in the Y direction of the joint 1, and is a rectangular plate made of stainless steel, aluminum, or other metal. It is preferable that each end plate 2 has a non-slip material such as vinyl chloride adhered to a front side surface (not shown).

The middle plate 3 has locking portions 3a at both ends in the X direction.
Is a metal rectangular plate having a width in the X direction larger than that of the end plates 2 and 2 by an amount corresponding to the width of the end plate 2 and a width in the Y direction corresponding to the width of the gap C in the longitudinal direction. It is preferable that an anti-slip material such as a vinyl chloride material is adhered to the cover.

As shown in FIGS. 5 and 6, the support structure 4 has a U-shaped cross section having a length corresponding to the sum of the widths of the end plates 2 and 2 in the Y direction and the width of the middle plate 3 in the Y direction. A support member 7 having a U-shaped cross section is bolted to a base member 6 having a U-shape. The base member 6 has side surfaces 6b, 6b rising from both ends in the width direction of a fixing portion 6a serving as a fixing surface to the frame A, and an upwardly inclined oblong hole extending from one end of each side surface 6b toward the center. A guide 6c is formed to form a guide for the support member 7, and a long hole 6d is similarly formed from the other end to provide a guide for the support 7. The support member 7 is connected to the side portions 7b and 7 from both ends of the receiving portion 7a which is a fixing surface of the end plate 2.
b is raised to a size that fits between the side portions 6b, 6b, and is formed by forming a bolt hole 7c at a position slightly from the center in the length direction of each side portion 7b. If the bolt hole 7c is formed as a long hole along the height direction of the side surface portion 7b as shown in the figure, even if the support member 7 moves along the guide portion, it does not rise in the height direction. preferable.

The support structure 4 is constructed as follows. First, the supporting members 7 and 7 are placed between the side portions 6b and 6b on the long hole 6c side and the long hole 6d side, respectively, so that the receiving portion 7a does not contact the fixing portion 6a of the base member 6. At this time, the positions of the bolt holes 7c, 7c are
Align with both ends of c (6d). Next, the long hole 6c
(6d) to bolt holes 7c, 7c and slot 6c (6d)
After the bolt a is inserted, the nut b is fastened. In this way, the support structure 4 is configured through the slidable connection of the support members 7 and the base member 6 along the oblong elongated holes 6c (6d). Therefore, when the base member 6 is fixed on the upper surface of the frame A in parallel with the Y direction,
Each support member 7 is installed slidably along the Y direction.

As shown in FIGS. 5 and 7, the support structure 5 has a U-shaped base member 8 formed in a suitable length shorter than the width of the middle plate 3 in the Y direction. The support member 9 is bolted.

The base member 8 rises side surfaces 8b, 8b from both ends in the width direction of the fixing portion 8a serving as a fixing surface to the frame A, and goes from the substantially center in the length direction of each side surface 8b to both ends. A V-shaped long hole 8c which is gradually inclined upward is formed. The support member 9 is formed to have a size that fits between the side portions 8b, 8b, and rises the side portions 9b, 9b from both ends of the receiving portion 9a, which is a fixing surface of the intermediate plate 3, and sets the length of each side portion 9b. A bolt hole 9c is formed substantially at the center in the direction. The bolt hole 9c is preferably a long hole that is long in the height direction of the side surface portion 9b.

The support structure 5 is provided with the support member 9 so that the receiving portion 9a does not come into contact with the fixing portion 8a.
8b, and bolt holes 9
It is constituted by inserting a bolt a into c, 9c and a long hole 8c and fastening a nut b. Thereby, the support member 9 is slidably connected to the base member 8 along the elongated hole 8c, and the support member 9 can be slidably installed in the Y direction in the same manner as the support structure portion 4. .

Next, the procedure for constructing the joint 1 having the above-described structure and its operation will be described. First, as shown in FIG. 3 and FIG. 5, the fixing portion 10 a and the fixing portion 10 b are formed at the corners of the skeleton A in an L-shaped cross section orthogonal to each other, and have a length matching the length of the base member 6. Angle material 10
An angle member 11 having an L-shaped cross section composed of a fixed portion 11a and a fixed portion 11b which are also orthogonal to each other and having a length corresponding to the length of the base member 8 is fixed. The procedure in this case is as follows. First, the fixing part 11a of the angle member 11 is placed on the upper surface of the corner of the skeleton A, and the fixing part 11b is brought into contact with the side surface of the gap C and fixed by bolts.
Next, the fixing portion 10b is brought into contact with the fixing portion 11b of the angle member 11, and the fixing portion 10a is extended toward the gap C to fix the angle member 10.
At this time, the fixing position is set such that the fixing position of the angle member 11 is located substantially at the center of the angle member 10 in the length direction.

Next, the support structure portion 4 is fixed to the fixing portion 10a of the angle member 10, and before and after this,
The support structure portion 5 is fixed to the fixing portion 11a of the angle member 11. In this case, the support structure portion 4 is fixed via a bolt after mounting the fixing portion 6a of the base member 6 on the fixing portion 10a, and the support structure portion 5 connects the fixing portion 8a of the base member 8 to the fixing portion 8a. 11a and then fixed via bolts.

Further, before and after the above operation, an operation of fixing the angle members 12 and 13 having the same configuration as the angle member 10 to the corner portion of the frame B is performed. In this case, the fixing portion 12a of the angle member 12 is placed on the upper surface of the corner of the skeleton B, and the fixing portion 12b is in contact with the side surface of the gap C.
Then, the fixing portion 13b of the angle member 13 is brought into contact with the fixing member 13 and the two are fixed by bolts. At this time, the fixing portion 13a is extended to the gap C side.

Following the above operation, the end plates 2 and 2 are
Do the work of passing over to This operation is performed as follows. First, as shown in FIG. 2 and FIG.
Are disposed at both ends in the longitudinal direction of the base member 6. Then, the one end of each end plate 2 in the X direction is set to the mounting width w.
1 while securing it to the receiving portion 7a of each support member 7 by screwing or the like, and fixing the other end to the angle material 13
Is mounted on the fixing portion 13a so that the mounting width w2 can be secured. At this time, the distance between the end plates 2 and 2 is
In the Y direction.

Next, the middle plate 3 is fixed to the receiving portion 9a of the support member 9 by screwing one end of the middle plate 3 in the X direction and the like.
The other end is placed on the fixed portion 13a and spans the gap C. At this time, the middle plate 3 overlaps each end plate 2 with a slight width at both ends in the Y direction, and the locking portions 3a, 3a.
Is brought into contact with the X-direction end of each end plate 2 from outside. In this way, the corners of each end plate 2 located on the side of the middle plate 3 are fitted inside the locking portions 3a, 3a.

Through the above operations, the joint 1 is constructed. Subsequently, the joint 51 is constructed in a direction perpendicular to the joint 1 to close the inner walls D and E. Thus, the gap C between the skeletons A and B and the gap between the inner walls D and E can be closed by the joint 1 and the joint 51, respectively.

The thus constructed joint 1 has a support member 7 slidably connected to one end of each end plate 2 and the middle plate 3 in the X direction with respect to a base member 6 and a base member 8, respectively. Since it is fixed to the member 9, the skeleton A,
Even if a change in B in the Y direction occurs, the change can be absorbed without difficulty.

This will be described in detail as follows.
By fixing the base member 6 (8) along the Y direction of the frame A via the angle member 10 (11), the support member 7 (9) is slidably arranged in the Y direction of the frame A, On the other hand, the end plates 2 and the intermediate plate 3 are fixed to a support member 7 or a support member 9 which is slidable in the Y direction.
That is, with this configuration, each end plate 2 (middle plate 3) can slide with respect to the skeleton A together with the support members 7 (9). Therefore, even if the frame A fluctuates in the Y direction, each end plate 2
The (medium plate 3) slides relative to the frame A. Thus, the joint 1 can effectively absorb the fluctuation in the Y direction.

At one end of each end plate 2 in the Y direction, a middle plate 3
Since the end portions in the Y direction are overlapped, each end plate 2 moves so as to slide on the back side of the middle plate 3 according to the fluctuation of the frame in the Y direction. Therefore, the end plates 2, 2 and the middle plate 3 smoothly follow the change without the end portions of the end plates 2, 2 and the middle plate 3 colliding with each other and being damaged by the change in the Y direction. I will be. Moreover, the support member 7 (9) and the base member 6
Since the bolt hole involved in the bolt connection with (8) is an oblong elongated hole along the length direction of the base member 6 (8), the guide portion of the support member 7 (9) extends along the Y direction. It is formed in an inclined shape. Therefore, when the fluctuation in the Y direction stops, each end plate 2 and the middle plate 3 are automatically slid by the own weight toward the downward inclined direction of the oblong elongated holes 6c, 6d or 8c together with the support member 7 (9). Move. Therefore, each end plate 2 and middle plate 3
Is automatically returned to the original position, and there is an operational effect that the gap C is not generated.

As described above, when each end plate 2 slides into the back side of the middle plate 3 in accordance with the fluctuation in the Y direction, the support members 7, 7 make the oblong elongated holes 6 c, 6 d face the center of the base member 6. The middle plate 3 is slightly lifted by each end plate 2 to slide while climbing. However, as shown in FIG. 6, when the bolt hole 7c involved in the connection between the support member 7 and the base member 6 is formed as a long hole 7c that is long in the height direction of the side surface portion 7b, the support member 7 and the base member 6 are inserted. Bolt a and nut b
Moves in the Z direction along the long hole 6c (6d) with respect to the base member 6, but moves through the long hole 7 with respect to the support member 7.
It moves to the receiving part 7a side along c. Therefore, the support member 7 and the end plate 2 are not lifted, and the middle plate 3 is not damaged. Even if the end plate abuts not only on the middle plate 3 but also on the joint 51, the end plate slides on the back side of the middle plate 3 and does not damage its end.

Further, each of the end plates 2 and the intermediate plate 3 spanning the gap C has one end in the X direction fixed to the support structure 4 or the support structure 5 and the other end fixed. 13a
It is placed on top and spans the gap C. Therefore, when a change in the X direction occurs between the skeletons A and B, the joint 1 can naturally follow the change with the end of the skeleton B as a free end. This is because end plates 2 and 2 and middle plate 3 are X
Since one end in the direction is attached to the skeleton A side, it is interlocked with fluctuations in the skeleton A side, but the other end is a free end that is not fixed to the skeleton B side, and is affected by fluctuations in the skeleton B side. This is because they are slidably arranged without any. In this way, the joint 1 can easily absorb the fluctuation in the X direction.

Moreover, the base member 6 (8) and the support member 7
If the bolt holes involved in the connection with (9) are formed as elongated holes 7c and 9c long in the height direction of the side surface of the support member, the Z-direction fluctuation can be absorbed by the connection of the two bolts, The joint 1 can cope with the fluctuation in the Z direction.

As described above, the joint 1 exhibits sufficient followability not only in the frame gap width direction but also in the longitudinal direction.
The function of following each direction is obtained by an independent structure. For this reason, even if the fluctuations in each direction are combined, the fluctuations can be reasonably absorbed by the action of each structure. In addition, no gap is formed between the end plate 2 and the joint 51, which is particularly suitable for a building employing a seismic isolation structure.

The above embodiment is an example of the present invention, and does not limit the configuration of the present invention. Various embodiments can be considered in the embodiment. For example, a configuration in which the base member 6 is divided into two portions corresponding to the respective end plates, or a support structure portion is replaced by the support structure portions 54 (64) as shown in FIGS. And so on. Further, the support structures 4 (5) are fixed to the same frame A side, but may be fixed to different sides.

Here, as shown in FIG. 8, the support structure portion 54 has a cross-section L without providing one side of the side portion 6b of the base member 6.
And a side member 7b of the support member 7.
And a support member 57 having an L-shaped cross section without providing one side of the support member 57. Similar to the support structure 4, the support member 57 is slidably bolted to the base member 56 so that the support member 57 is slidable in the Y direction. It becomes slidable.

The support structure 64 has a receiving groove 66 a having an arc-shaped cross section formed in an upwardly inclined shape toward the center of the rectangular plate portion, and the receiving groove 66 a is used as a guide for the supporting member 67. And a support member 67 having a bulged protruding edge 67a slidable in the receiving groove 66a. This is because the protruding edge portion 67a can be slidably engaged with the receiving groove 66a, so that the support member 67 can be installed slidably in the Y direction by fixing the base member 66 in parallel along the Y direction. it can. Further, the guide portion of the support member 67 obtained by the receiving groove 66a can be inclined in the Y direction. The support member 67 can be freely rotated with the protruding edge portion 67a fitted in the receiving groove 66a.
Even if the direction changes, the support member 67 rotates appropriately while maintaining the fitted state. Thus, fluctuations in the Z direction can be absorbed.

[Brief description of the drawings]

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

FIG. 2 is a plan view showing a main part of the joint.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is an exploded perspective view showing a main part of the joint.

FIG. 6 is an exploded perspective view showing an example of a support structure.

FIG. 7 is an exploded perspective view showing an example of the other support structure.

FIG. 8 is an exploded perspective view showing another support structure.

FIG. 9 is an exploded perspective view showing still another supporting structure.

FIG. 10 is an explanatory diagram showing a structure of a conventional joint.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Joint 2 End plate 3 Middle plate 4,5 Support structure 54,64 Support structure 6,8 Base member 56,66 Base member 7,9 Support member 57,67 Support member 10,11 Angle material

Claims (2)

[Claims] 1. An intermediate plate that closes the skeleton gap while leaving both ends in the longitudinal direction of the gap appropriately, and two sheets that close the remaining gap portions at both ends and partially overlap the ends of the intermediate plate. And an end plate of
Each end plate is supported by a first support structure provided on one of the skeleton sides so as to be slidable in the gap width direction and automatically slidable in the gap longitudinal direction. The second supporting structure is supported by the second supporting structure so as to be slidable in the width direction, and the first supporting structure can be automatically slid by its own weight in the end direction in the gap longitudinal direction. An expansion joint formed through a connection between a guide portion inclined at a predetermined angle and a support member slidably engaged with the guide portion. 2. The structure according to claim 1, wherein the second support structure portion is configured such that the intermediate plate is slidable in a longitudinal direction of the gap and automatically slidable toward a central portion. Expansion joint.