JP6879583B2 - Joint cover material and telescopic joint device for floor - Google Patents

Description

The present invention relates to a floor expansion joint device installed in a gap provided between structures in order to absorb an external force applied to the structure in the event of an earthquake or the like.

A building with a seismic isolation structure has a seismic isolation layer that separates the building from the foundation, and a seismic isolation device is installed there to make it difficult for seismic force to be transmitted to the building.
In a building with such a seismic isolation structure, the separation along the outer circumference of the building (hereinafter, also referred to as "expandable joint") may be closed with a berm floor, or one side may be fixed to the building side and the other side may be used. A floor covering material is provided that straddles the separation and extends to the ground side, and the floor covering material has the other end of the floor covering material for the separation that widens or narrows according to the shaking of the building when an earthquake occurs. The structure is such that the separation is closed by sliding on the ground and relative displacement while covering the upper surface of the separation.

The seismic isolated building is designed so that the seismic isolation device is deformed in the event of an earthquake and changes the violent shaking into slow shaking so that the shaking caused by the earthquake is not transmitted to the building as it is, and the separation of the outer circumference of the building is exempted. The building that sways slowly on the seismic isolation device is formed with sufficient width so that it does not interfere with the surrounding structures.
If the berm floor and the floor covering material are provided in a size that closes the separation when the width is widened by an earthquake, the upper surface of the separation can be reliably closed even if the seismic isolated building shakes greatly.
However, depending on the arrangement of the structure adjacent to the seismic isolated building, the end of the dog running floor when the width of the separation is narrowed, or the end of the floor covering material that rides on the ground on the side of the adjacent structure. It may be necessary to set the width of the dog-running floor and the allowance for riding on the ground surface at the end of the floor covering material to be small in order to avoid collision with the structure. In such a case, it is necessary to take measures to prevent a gap leading to the separation between the edges of the berm floor and the edges of the floor covering material when the width of the separation is greatly widened. There was a problem that it was difficult to design a berm floor and floor covering material to cover the separation due to the relationship with the structure.

In order to deal with such a problem, a joint cover material is installed at the end of the dog running floor or below the end of the floor cover material placed on the riding allowance, and when the width of the joint is greatly widened, the dog There is known a floor joint device in which a gap generated between an end portion of a running floor and an end portion of a floor cover material is closed by a joint cover material (see, for example, Patent Document 1).
Further, a plurality of divided cover plates formed long along the length direction of the joint are connected to each other by fitting ridges having a circular cross section and holding grooves provided on both sides of the divided cover plates. Then, the joint cover material is formed in a plate shape, and the lower side of the joint cover material is supported by a bracket (rotary support member) rotatably attached to the structure on one side, so that the width of the joint is narrowed. At that time, the split cover plate on the tip end side of the joint cover material is the tip of the bracket in conjunction with the bracket rotating to the side of the structure on one side to narrow the length supporting the joint cover material. There is known a floor joint device having a structure in which the width of the joint cover material is narrowed by folding downward from the joint and hanging down (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 2012-62719 Japanese Unexamined Patent Publication No. 2010-144357

Regular maintenance and maintenance of floor joints to prevent pedestrians from falling into the joints or being caught and falling even if the joints widen or narrow due to an earthquake. That is essential.
In the conventional floor joint device, when the bracket supporting the joint cover material is maintained and inspected, it is necessary to remove the joint cover material from the joint in order to keep the bracket widely open. After the inspection, the joint cover material had to be reattached into the joint, and the maintenance and inspection work had to be extremely time-consuming.
Among the conventional telescopic joint devices, the latter one has the divided cover plates constituting the joint cover material rotatably connected to each other in the vertical direction, but has a small rotation area and the entire joint cover material. It is not formed so that it can be rolled up. This product was not made in consideration of the maintainability of the telescopic joint device.

Further, the floor joint device is a wall surface of a structure in which a rectangular plate-shaped bracket is provided in a stretchable joint provided between the structures and a longitudinal end portion on one side thereof faces the stretchable joint. In addition, it is rotatably attached in the vertical direction, and is configured to support the lower surface of the joint cover material with the upper surface of the short side protruding in the telescopic joint, but the plate-shaped bracket is cantilevered. Since it is attached, a large load is applied to the attachment portion of the bracket in a state where the joint cover material is placed and supported on the bracket.
Therefore, in order to secure the load capacity, the size of the constituent members of the device including the bracket becomes large, and a member for reinforcement is required, which complicates the structure and makes it impossible to fit the whole compactly. Depending on the width of the joint, it may be difficult to install.

Furthermore, since the bracket is a cantilever type, when the structure is displaced in the direction in which the expansion joint narrows in the event of an earthquake and the tip of the bracket comes into contact with the wall surface of the structure within the expansion joint, the structure changes. Depending on the orientation, the tip of the bracket does not come into contact with the wall surface smoothly, so that the bracket can move horizontally, that is, the mounting portion does not rotate about the axis in the vertical direction, and the structure is incomplete. There was a risk that the bracket would be damaged or deformed due to the force applied from the wall surface.

A device with a cantilever bracket has a problem that the device configuration becomes large and the construction becomes complicated.
That is, as shown in FIG. 14, the cantilever type bracket 100 is rotatably attached around the vertical axis to the support member 101 attached to the skeleton on one side whose original end portion faces the telescopic joint. When the tension spring 102 is attached between the tip portion and the support member 101, the tension spring 102 having a length Gp in normal times rotates the bracket 100 in conjunction with the narrowing of the expansion joint due to the occurrence of an earthquake. When the tension spring 102 is tilted until it is substantially parallel to the skeleton, the tension spring 102 extends to the length Ga, but the elongation rate of the tension spring 102 when the bracket is movable is only about 1.1 to 1.15 times (1.15 times). Ga ≈ 1.1 × Gp ~ 1.15 × Gp).
When the bracket is movable, a large restoring force of the tension spring 102 is required to restore and rotate the bracket 100, which rotates about 80 ° with its original end as a fulcrum and falls in parallel with the skeleton, to its original position in normal times. However, when the elongation rate at the time of maximum extension is only within the above range, it is indispensable to give a considerably large tensile strength to the tensile spring 102 from the beginning in normal times.
Therefore, the tension spring 102 that can be used is limited to a large one having a large spring diameter and a large tensile strength, and a considerable amount of labor is required for installation and adjustment at the time of construction.

Further, the bracket is provided so that its upper surface is in contact with the lower surface of the joint cover material to support the joint cover material, but the contact area of the support portion is small and the joint cover material is locally supported. The joint cover material may partially bend due to its own weight. In order to prevent such bending, it is necessary to reinforce the joint cover material itself to have a robust structure so that the joint cover material with increased weight can be supported. In the end, it is inevitable that the size of the constituent members of the device including the bracket will increase, and there is also a problem that the device cannot be made compact.

In view of such problems of the prior art, the present invention is a floor expansion joint device installed under the floor covering material covering the expansion joints between structures, in which the adjacent land boundary and the adjacent building are close to each other. In addition to realizing a compact configuration that can be installed in wide joints, the entire device is configured to fold smoothly in the same direction in conjunction with displacement in the direction of narrowing the width of the telescopic joints, in the event of an earthquake. The challenge is to ensure the safety of pedestrians passing through the telescopic joints. Another object of the present invention is to make it possible to perform maintenance and inspection of a floor joint device reliably and easily without any trouble.

In order to solve the above problems, the present invention is a joint cover material for a floor expansion joint device (hereinafter, also referred to as “joint device”) installed inside an expansion joint provided between structures. There,
The joint cover material is formed to be long along the length direction of the stretchable joint, and can be rolled up from one side side of the peripheral portion to the other side side facing the joint. It is characterized in that it is formed in.

According to this, since the joint cover material is formed so as to be foldable, the upper part of the device can be opened by temporarily folding and temporarily fixing the joint cover material with the joint cover material installed. In that state, maintenance and inspection of the device can be performed reliably. Since it is not necessary to remove the joint cover material and reattach it from the removed state, it is possible to quickly perform maintenance and inspection work of the joint device.
In addition, since the joint cover material can be handled in a rolled state, it can be installed quickly and easily when working in a narrow space, and the joint cover material can be stored in a rolled state without taking up installation space. And can be transported.

The joint cover material having the above configuration has a range in which when the joint cover material is exposed to form a walking floor surface, rigidity is ensured so that a person can walk safely without being deformed even if a plurality of people are placed on the joint cover material. Can be provided in an appropriate shape. As long as it does not interfere with walking and is safe, it can be provided in a rectangular shape in a plan view, an oval shape, or any other appropriate plan view shape that closes the stretchable joint.

As an example of the joint cover material, a form in which a plurality of parallel rod-shaped members are connected via a linear member to form a plate can be mentioned.
Further, the joint cover material may have a structure in which spacers are arranged between the rod-shaped members, and the joint cover materials may be formed in a plate shape by connecting the rod-shaped members with the spacers interposed therebetween.
The spacer is a member that functions to prevent adjacent rod-shaped members from interfering with each other when the joint cover material is rolled up, and the shape and size of the spacer are not limited. The spacers may be arranged entirely between the adjacent rod-shaped members of the plurality of parallel rod-shaped members, partially in a plurality of portions, or only between some of the rod-shaped members.
Further, in the connection between the rod-shaped members using the linear members and between the rod-shaped members and the spacers, the linear members are wound around the outer peripheral surface of the rod-shaped members and the spacers, and the linear members are fastened and connected so as not to be detached. A linear member may be penetrated inside the member or spacer in a skewered manner, and the linear member may be fastened on both sides to be connected, but the present invention is not limited to this.
In this case, by using a hollow pipe material as the rod-shaped member, the weight of the joint cover material can be reduced. The pipe material may be made of steel or synthetic resin as long as rigidity can be ensured.

The joint cover material may be formed by using a flexible material such as a thin-walled steel material or a synthetic resin material. For example, in order to ensure rigidity, the joint cover material may be formed by arranging concave or convex portions extending along the length direction of the joint cover material continuously or intermittently along the width direction of the cover material. The joint cover material may have a corrugated cross section along the width direction.

Further, as the joint cover material , a plurality of joint cover materials formed so as to be rollable by setting a short width along the joint length direction along the stretchable joint length direction are arranged side by side, and these plurality of joints are arranged side by side. The entire cover material may be provided so as to form a long joint cover material. In other words, the joint cover material may have a structure that is divided into a plurality of cover materials along the length direction thereof.

Further, the present invention is a cover material support mechanism of a joint device (hereinafter, "support") which is installed inside a stretchable joint provided between structures and horizontally supports the joint cover material in the stretchable joint. It is also called "mechanism").
A first bracket in which the tip portions facing the telescopic joint are rotatably connected around the vertical axis and the rear end portion is rotatably attached to the structure on one side around the vertical axis. A second bracket whose rear end is rotatably attached to the structure on one side and slidably displaced along the length direction of the expansion joint, and approximately V with the tip as the apex. It is provided with an elastic member attached between both brackets assembled in a shape, and is provided so that the tips of both brackets are held in a protruding position in the telescopic joint in normal times.
It is characterized in that the joint cover material in which the side side portion on one side is connected to the structure on the one side is supported on the first and second brackets.

According to this, the joint device is installed on the wall surface facing the expansion joint of the structure on one side, and the floor cover material covering the expansion joint is installed on the joint cover material supported by the support mechanism.
When the width of the expansion joint becomes wider than the width of the floor cover material during an earthquake, the joint cover material is exposed as the floor cover material slides and shifts on the joint cover material to absorb the displacement. , Prevents floor defects from forming in stretch joints.
On the other hand, when the width of the expansion joint narrows during an earthquake, the floor covering material slides and displaces, and the tip of the floor covering material rides on the floor surface of the structure on the side where the joint device is installed and runs in the same direction. Absorb displacement.
Further, when the width of the expansion joint is narrowed and the wall surface of the structure on the side where the floor covering material is attached abuts on the intersection of the tips of the first and second brackets, a force is applied in the direction of narrowing the width of the expansion joint. , The first bracket collapses with the rear end as the fulcrum, and at the same time, the second bracket slides and displaces the rear end along the length direction of the expansion joint and collapses, so that the first and second brackets collapse. By widening the placement interval of both rear ends of the bracket, the intersecting tip of the first and second brackets is displaced in the direction of narrowing the width of the expansion joint while widening the intersection angle, and the joint cover is accompanied by this. The part of the material protruding toward the expansion joint side hangs down over the tips of the first and second brackets, and the entire device is reliably and smoothly folded flat within the expansion joint. It can absorb the displacement between objects.
In addition, when the arrangement interval between the rear ends of the first and second brackets is widened and the entire device is folded flat within the telescopic joint, and the telescopic joint is displaced in the direction of widening the width, it is elastic. The elastic force of the member causes the first and second brackets to be displaced in the direction in which the rear ends are widened so that the first and second brackets can be restored to their original mounting positions.

The support mechanism that supports the joint cover material is a bracket structure assembled in a substantially V-shape in a plan view in which the tips of the first and second brackets protruding from the wall surface of the structure into the telescopic joint intersect and are connected to each other. Therefore, when the load of the joint cover material or the expansion / contraction joint is narrowed, the stress applied by the contact of the displaced structures is applied to the connection between the first and second brackets and the structures at the rear ends of the respective brackets. Since the load is distributed to each component, it is unlikely to be deformed or damaged due to movement, and the entire device should be compact without providing each component with unnecessarily high rigidity. Can be done.

Further, in the support mechanism, an elastic member is erected between the first and second brackets assembled in a substantially V-shape in a plan view with the tip portions as the apex, and the first and second brackets are between the rear ends. The elastic member extends between both brackets when displaced in the expanding direction, and when the external force that displaces both brackets disappears, the elastic force of the elastic member restores both brackets to their original mounting positions. It is provided.
When a tension spring is used as the elastic member, the extension of the spring from the initial mounting position where both brackets are assembled in a substantially V shape to the position where the rear ends of both brackets open and deform into a substantially straight line. It is possible to set the rate to 1.3 times or more. That is, it is not necessary to give a certain amount of tensile strength to the tensile spring at the initial mounting position, and a tensile spring having a small spring diameter and an appropriate tensile strength is used to mount the tension spring between the brackets with a simple operation. It is possible. Coupled with the fact that the entire device can be constructed compactly, it is possible to use a general-purpose tension spring and attach it without any hassle to assemble the device, so the cost required for construction can be kept low. is there.
As the elastic member, instead of the tension spring, a spring device of another form such as a leaf spring or a torsion bar, or an appropriate actuator device such as a power cylinder may be used.

In the support mechanism having the above configuration, the joint cover material hangs over the tips of both brackets in the process of folding the first and second brackets into a flat shape. At this time, the joint covers are attached to the tips of both brackets. It is preferable to install a cushioning member for alleviating the impact generated when the lower surface of the material slides at the upper end of the connecting portion between the tip portions of the first and second brackets. As the cushioning member, a rotating member that rotates around a horizontal axis can be used.

Further, in the support mechanism having the above configuration, in order to secure the rigidity of the support mechanism, the first and second brackets are frame bodies formed by arranging vertical rails between the horizontal rails arranged vertically in parallel. Is preferable, and it is more preferable that the horizontal rail and the vertical rail are hollow materials.
If the support mechanism has a frame structure, the surface of the mechanism becomes an open space, workability is improved, and the fitting of the device attached to the wall surface of the structure becomes compact. Further, when the members move in the folding direction, the escape space of the members is secured so that the members do not interfere with each other, and the bracket can be operated smoothly.

Further, the joint device of the present invention can be configured by combining the joint cover material having the above-mentioned structure and the support mechanism.

It is schematic cross-sectional view of the expansion joint part which installed the floor joint apparatus of one Embodiment of this invention inside, and covered the upper opening with a floor covering material. FIG. 1 is a schematic plan view of a state in which the floor cover material is removed. FIG. 2 is a schematic plan view of a support mechanism with the joint cover material removed. FIG. 3 is an enlarged member layout view of the upper side of the tip end portion of the support mechanism of FIG. It is the member arrangement drawing which enlarged the lower side of the tip part of the support mechanism of FIG. It is an enlarged view of the main part of the joint cover material on the end side. (A), (B) and (C) are views showing a state in which the joint cover material is supported on the support mechanism and a state in which the joint cover material is deformed in conjunction with the displacement of the bracket of the support mechanism. It is a figure which showed the state which the width | expansion joint widened from the state of FIG. FIG. 8 is a schematic plan view of a state in which the floor cover material is removed. It is a figure which showed the state which the width of the expansion joint narrowed from the state of FIG. FIG. 10 is a schematic plan view of a state in which the floor cover material and the telescopic joint are removed in FIG. It is a schematic external view of another form of a joint cover material. Similarly, it is a schematic external view of another form of the joint cover material. It is a figure for demonstrating the structure of the cantilever bracket of the conventional joint device.

A preferred embodiment of the present invention will be described with reference to the drawings. The technical idea of the present invention is not limited to the embodiments described below.

FIG. 1 shows a joint device according to an embodiment of the present invention, which is installed inside a stretchable joint G provided between a structure A and a structure B adjacent to the structure A. By arranging the joint cover material 17 under the floor cover material C bridged from the structure A to the structure B, a defect can be formed in the expansion joint G even when the width of the expansion joint G is widened. This is intended to ensure the safety of pedestrians walking back and forth between structures A and B.

The structure A is a seismic isolation building in which a seismic isolation device is provided on the ground and a foundation is installed on the seismic isolation device, and the telescopic joint G is provided along the outer periphery of the structure A.
The stretchable joint G follows the shaking of the structure A when an earthquake occurs, and widens or narrows the width thereof.
The structure B is provided at a position facing the structure A with the expansion joint G interposed therebetween, and the ground or floor surface (hereinafter, collectively referred to as “floor surface”) B1 is the floor surface of the structure A. It is provided so as to be horizontal with A1.

The floor covering material C is a plate material formed to have a width slightly larger than the width of the stretchable joint G in normal times, and the end portion C1 on one side thereof is on the floor surface A1 of the structure A and the stretchable joint G. It is connected to the connecting portion A2 provided at the side end so as to be displaceable upward by a slight height, and the other end C2 is on the floor surface B1 of the structure B and is the end on the telescopic joint G side. It is placed on the concave riding allowance B2 provided in the portion and covers the upper part of the expansion joint G. When the width of the expansion joint G expands following the shaking of the structure A at the time of an earthquake, the other end The portion C2 slides on the riding allowance B2 in a direction away from the structure B, and when the width of the expansion joint G narrows, the other end portion C2 slides and is installed so as to ride on the floor surface B2 from the riding allowance B1. There is. A plurality of floor covering materials C are arranged side by side without gaps along the length direction of the expansion joint G to cover the entire upper part of the expansion joint G.

The joint device 1 is composed of a support mechanism 2 installed on the wall surface B3 of the structure B facing the telescopic joint G, and a joint cover material 17 horizontally supported in the telescopic joint G by the support mechanism 2. .. Similar to the floor cover material C, a plurality of joint devices 1 are arranged side by side along the length direction of the expansion joint G.

As shown in FIG. 3, the support mechanism 2 is rotatably connected to the mounting frame 3 mounted horizontally on the wall surface B3 of the structure B along the length direction of the telescopic joint G. The rear ends of the pair of brackets 4 and 5 are attached to each other.

Specifically, the brackets 4 and 5 are frames in which horizontal rails 6 and 6 made of square pipes are arranged vertically in parallel, and vertical rails 7 and 7 also made of square pipes are arranged between them and connected integrally. The cross rails 6 and 6 of the bracket 5 are inserted between the cross rails 6 and 6 of the bracket 4 so that the tips thereof are vertically overlapped and assembled. Further, of the cross rails 6 and 6 of both brackets 4 and 5, the cross rails 6 and 6 on the lower side of the bracket 4 are provided slightly longer than the others.

The tip ends of both brackets 4 and 5 are vertically overlapped and intersect with each other, and are rotatably connected to the overlapped tip portions through a shaft rod 8 along the vertical direction, and the rear end side is a bracket. The rear end portion of 4 is connected to the fixed shaft portion 9 which is a shaft portion rotating around the vertical axis provided on the mounting frame 3, and the rear end portion of the bracket 5 is provided on the mounting frame 3 as a guide rail 3a. It is connected to and attached to a moving shaft portion 10, which is a shaft portion that slides along the vertical axis and also rotates around a vertical axis.

Both brackets 4 and 5 have shafts around the vertical axis arranged at the nodes between the tip ends and the attachment frame 3 on the rear end side, respectively, and are one of the nodes with the attachment frame 3. The shaft portion 10 is slidably arranged along the guide rail 3a and attached so as to bend around each axis at each of these nodes, and the movement is within the movable range on the guide rail 3a of the moving shaft portion 10. In a state where the shaft portion 10 is arranged so that the distance between the rear ends of both brackets 4 and 5 is the narrowest, both brackets 4 and 5 are in the telescopic joint G and are substantially V in plan view with respect to the mounting frame 3. The tip portion that is assembled in a shape and intersects has a shape that protrudes most toward the wall surface A3 side of the structure A, and from this position, the moving shaft portion 10 guides the moving shaft portion 10 so that the distance between the rear ends of both brackets 4 and 5 increases. When sliding along the rail 3a, the intersecting tip portions are displaced toward the wall surface B3 side of the structure B and deformed into a shape in which the protrusion width of the tip portion from the wall surface 3c in the expansion joint G is narrowed, and both brackets 4 At the position where the moving shaft portion 10 slides along the guide rail 3a so that the distance between the rear ends of the parts 5 and 5 is widest, both brackets 4 and 5 are expanded to a position substantially parallel to the wall surface B3 and flattened. It is assembled so as to be deformed (see FIG. 11 described later).

Both brackets 3 and 4 deformably attached as described above are bridged by arranging tension springs 11 which are elastic members in three upper and lower stages between the vertical rails 7 of the brackets 4 and the vertical rails 7 of the brackets 5. Then, due to the elastic force of the tension spring 11, in normal times, the wall surface B3 of the structure B was bent and broken in a substantially V-shape in a plan view, and the tips of both brackets 4 and 5 protruded into the expansion joint G. It is provided so that it can be held in place.
Then, as will be described later, the width of the expansion joint G is narrowed due to the occurrence of the earthquake, and the wall surface A3 of the structure A that hits the tips of both brackets 4 and 5 approaches the structure B that is larger than the elastic force of the tension spring 11. When a force in the direction is applied, both brackets 4 and 5 are deformed so as to expand between the rear ends, and the restoring force of the tension spring 11 that has been extended once the narrowed expansion joint G returns to the original width. As a result, both brackets 4 and 5 are configured so that the tip portions of the brackets 4 and 5 are projected into the expansion joint G and bent into a substantially V shape to restore the folded shape.

As shown in FIG. 4, at the tip of the cross rail 6 on the upper side of the bracket 4, a rotating member 12 which is a cushioning member for cushioning the impact when the joint cover material 17 comes into contact with the cross rail 6 is attached to the cross rail 6. It is rotatably attached to a horizontal rotating shaft 13 provided at the tip.
Further, as shown in FIG. 5, a support member 14 is projected laterally from the tip of the cross rail 6 on the lower side of the bracket 4, and the support member 14 is provided to rotate along the vertical direction. A rotating member 16 is rotatably attached to the shaft. The rotating member 12 and the rotating member 16 are cylindrical rotating objects, and casters (wheels) made of rubber, plastic, or metal can be used.

The joint cover material 17 is formed in a rectangular plate shape in a plan view by integrally connecting a plurality of rod-shaped members arranged in parallel with linear members.
Specifically, as shown in FIG. 6, in the joint cover material 17, a plurality of steel pipe materials 18 are arranged in parallel with a cylindrical spacer 19 having a smaller diameter thereof sandwiched between the joint pipe materials 18 and the spacers 19. A wire having a flexible linear member 20 such as a wire or a rod penetrating inside along the width direction (diameter direction), and penetrating the inner peripheral surface of the tube members 18 at both ends of the parallel tube members 18 By fastening the shape member 20, a plurality of pipe members 18 are integrally connected in a bamboo blind shape or a raft shape. The cylindrical spacer 19 may have a diameter substantially the same as that of the pipe material 18, and instead of the spacer 19, a spacer having an appropriate shape such as a spherical shape or a ring shape may be used.
The fastening of the linear member 20 penetrating the pipe material 18 and the spacer 19 is provided with a certain amount of play so that a gap of several millimeters is formed between the adjacent pipe material 18 and the outer peripheral surface of the spacer 19. Since there is a gap with the spacer 19, the adjacent pipe members 18 and 18 can be bent each other with the spacer 19 as a fulcrum, and in the entire joint cover material 17 having a rectangular shape in a plan view, one of them is from the longitudinal side to the other. It can be folded over the longitudinal side of the.

As shown in FIG. 2, the joint cover material 17 is formed in a size that substantially covers the upper part of the support mechanism 2 in which the brackets 4 and 5 are projected from the wall surface B3 of the structure B in a substantially V shape. The end of the linear member 20 penetrating the 18 and the spacer 19 is connected to the upper end of the mounting frame 3, and one side end is cantilevered and attached to the wall surface B3 side, and the bottom surface thereof is attached. It is placed on the upper surface of the bracket 4 of the support mechanism 2 and horizontally supported in the expansion joint G.

Then, as shown in FIG. 7, the brackets 4 and 5 are assembled in a substantially V-shape in the telescopic joint G, and the intersecting tip portions are projected from the position of protruding toward the wall surface A3 side of the structure A (the same figure (A). )), When the distance between the rear ends of both brackets 4 and 5 is widened and the intersecting tip is displaced toward the wall surface B3 of the structure B, the side of the other side end of the joint cover material 17 is the bracket 4, When both brackets 4 and 5 are flatly deformed by hanging over the tip of 5 ((B) in the figure), substantially the entire joint cover 17 hangs down and overlaps parallel to the outside of both brackets 4 and 5. (Fig. (C) in the same figure).
Further, as shown in FIG. 6A, the joint cover material 17 located on the tip side of both brackets 4 and 5 in a state where the joint cover material 17 is horizontally supported by the brackets 4 and 5. By rolling up the longitudinal side and folding it to the mounting frame 3 side and temporarily fixing it in the folded state, the upper part of the support mechanism 2 can be opened and the joint device 1 can be maintained and inspected. There is.

According to the joint device 1 of the present embodiment configured in this way, in normal times, as shown in FIGS. 1 and 2, the tips of the brackets 4 and 5 of the support mechanism 2 protrude into the telescopic joint G. It is held in a vertical position, and the joint cover material 17 is placed on the upper surface of the bracket 4 and supported horizontally. The floor cover material C overlaps the upper part of the joint cover material 17, and the joint cover material 17 is not exposed.

When the width of the expansion joint G becomes wider than the width of the floor cover material C in the event of an earthquake, the floor cover material C slides and displaces above the joint cover material 17 as shown in FIGS. 8 and 9. As a result, the joint cover material 17 whose lower surface is supported by the support mechanism 2 is exposed on the stretchable joint G to absorb the displacement and prevent the floor surface from being damaged in the stretchable joint G.

On the other hand, when the width of the expansion joint G is narrowed during an earthquake, the floor bar material C is slidably displaced on the joint cover material 2, and the tip portion C2 rides on the floor surface B1 from the riding allowance B2 of the structure B. Absorbs displacement in the same direction.
Further, when the width of the expansion joint G is narrowed and the wall surface A3 of the structure A comes into contact with the rotating member 16 installed below the tip of the bracket 4, and a force is applied from the wall surface A3 in the direction of the structure B, FIG. And as shown in FIG. 11, as the rotating member 16 slides along the wall surface A3, the brackets 4 and 5 are displaced in a direction to increase the distance between the rear ends and move toward the wall surface B3 of the structure B. When folded, one side of the joint cover material 17 rides over the tips of the brackets 4 and 5 and hangs down to absorb the displacement in the expansion joint G.

When the joint cover material 17 gets over the tips of the brackets 4 and 5, the lower surface of the joint cover material 17 comes into contact with the peripheral surface of the rotating member 12, so that the joint cover material 17 slides smoothly without causing a large impact or friction. It moves and hangs down. The hanging joint cover material 17 enters the space between the wall surface A3 and the tips of the brackets 4 and 5, which is formed above the rotating member 16 that is in contact with the wall surface A3.

Further, when the width of the expansion joint G is widened from the state shown in FIG. 10, the brackets 4 and 5 are restored to the original substantially V shape by the elastic force of the tension spring 11, and the joint cover material 17 is accompanied by this. Is pulled back to the upper surface of the bracket 4 and is horizontally supported in the expansion joint G.

12 and 13 show other forms of the joint cover material.
The joint cover material 20 of FIG. 12 is a cover material integrally molded using a synthetic resin material, and the concave portions 20a and the convex portions 20b extending in the length direction thereof are alternately arranged in the width direction so as to be rolled up. It is formed.
Further, the joint cover material 21 of FIG. 13 is also a cover material made of synthetic resin, and is formed so that the cross section in the width direction has a corrugated shape so that the entire joint can be folded and the rigidity as a floor material is increased. It is secured.

The joint device 1, the support mechanism 2, the joint cover material 17, and the constituent members thereof are shown as an example of the embodiment of the present invention, and the present invention is not limited to this. It can be configured in a form.

1 joint device, 2 support mechanism, 3 mounting frame, 4, 5 bracket, 6 horizontal rail, 7 vertical rail, 8 shaft rod, 9 fixed shaft part, 10 moving shaft part, 11 tension spring, 12 rotating member, 16 rotating member , 17 joint cover material, 18 pipe material, 19 spacer, 20 linear member, 21,22 joint cover material, A, B structure, C floor cover material, G elastic joint

Claims (10)

A joint cover material supported on a bracket of a cover material support mechanism installed inside an elastic joint provided between structures.
In the joint cover material, a plurality of rod-shaped members arranged in parallel are connected via a linear member, and the entire joint is formed in a long plate shape along the length direction of the expansion joint, and the peripheral portion thereof. A joint cover material characterized in that it is formed so as to be rolled up from one side side to the other side side facing the other side. The joint cover material according to claim 1, further comprising a structure in which spacers are arranged between rod-shaped members. The joint cover material according to claim 1 or 2, wherein the rod-shaped member is a hollow pipe material. A joint cover material supported on a bracket of a cover material support mechanism installed inside an elastic joint provided between structures, and one side side portion is the one side structure. In the joint cover material installed by connecting to the side
The joint cover material is formed by using a flexible material, and is formed by continuously or intermittently arranging concave portions or convex portions extending along the length direction of the cover material along the width direction of the cover material. A joint cover material that is formed so as to be foldable from one longitudinal side side to the other longitudinal side side. Joint cover material according to claim 4 cross section along the width direction of the joint cover material is a waveform. The joint cover material according to any one of claims 1 to 5 , wherein a plurality of joint cover materials are arranged side by side along the length direction of the stretchable joint to form a long length as a whole. A joint cover material according to any one of claims 1 to 6, the structure and the structure cover member is installed inside the expansion joint disposed horizontally supporting the joint cover material in expansion joint in between A telescopic joint device for floors consisting of a support mechanism .
The cover material support mechanism
A first bracket in which the tip portions facing the telescopic joint are rotatably connected around the vertical axis and the rear end portion is rotatably attached to the structure on one side around the vertical axis. A second bracket whose rear end is rotatably attached to the structure on one side and slidably displaced along the length direction of the expansion joint, and approximately V with the tip as the apex. It is provided with an elastic member attached between both brackets assembled in a shape, and is provided so that the tips of both brackets are held in a protruding position in the telescopic joint in normal times.
The floor expansion / contraction is configured to support the joint cover material having one side side portion connected to the side of the one side structure on the first and second brackets. Joint device . A configuration in which a cushioning member for alleviating the impact generated when the lower surface of the joint cover material slides along the side end is provided at the upper end of the connection portion between the tip portions of the first and second brackets. The telescopic joint device for a floor according to claim 7, wherein the joint device has . The floor expansion joint device according to claim 8, wherein the cushioning member is a rotating member that rotates about a horizontal axis. The first and second brackets are the frames formed by arranging the vertical rails between the upper horizontal rails and the lower horizontal rails arranged vertically and parallel to each other, according to claims 7 to 9. The floor telescopic joint device according to any one .

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