JP2009228348A - Joint cover device for floor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint cover device for a floor which hardly generates a plane strain in the bottom face, and can modify a plane strain if the plane strain is generated. <P>SOLUTION: A cover body C is composed of a flat cover plate 5 covering a joint s, and a plurality of reinforcing support rods 6 arranged under the cover plate 5, along the width direction of the joint s so as to leave a mutual space allowing the flexibility of the cover plate 5, thereby hardly generating a plane strain in the whole of the bottom faces of the reinforcing support rods 6. If a plane strain is generated in the whole of the bottom faces of the reinforcing support rods 6, application of a load of a vehicle or the like on the cover body C bends the cover plate 5 at a part between the adjacent reinforcing support rods 6, 6, thereby modify the plane strain to eliminate wobbling. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a floor joint cover device that covers joints between floors of adjacent buildings.

  In a building whose lower part is supported by a seismic isolation device having a shock absorbing function, horizontal shaking during an earthquake tends to increase. A relatively wide joint capable of absorbing the shaking is formed between adjacent seismic isolation structures and adjacent artificial ground, which is suitable for joints of such seismic isolation structures. A floor joint cover device that can be used has already been proposed by the present applicant (see, for example, Patent Document 1).

  As shown in FIG. 11 (A), such a floor joint cover device is formed between a floor f of a building A as a building and a building B as an artificial ground adjacent to the floor f via a joint s. One end of the cover body C that is passed over to cover the joint s is slidably connected to the side edge of the floor f via a connecting means a, and the other end of the cover body C is used as a free end, An end edge cover plate c is provided at the free end with an inclined edge b that is inclined from the lower surface toward the upper surface of the outer end, and substantially flush with the upper surface d of the cover body C from the upper portion of the inclined edge b. Projecting toward the building B side, a horizontal receiving edge e on the side edge of the building B, and an inclination receiving member inclined in the same direction as the inclined end edge b at the outer end of the horizontal receiving edge e. A sliding receiving frame h provided with an edge g, and a free end of the cover body C mounted on the horizontal receiving edge e of the sliding receiving frame h; The outer end of the end cover plate c is placed on the floor surface i of the building B, and the end cover plate c is interposed between the inclined end edge b of the cover body C and the inclined receiving edge g of the sliding receiving frame h. The upper part of the generated working gap j is shielded.

  In the event of an earthquake, when the building A and the adjacent building B are relatively relatively displaced in the approaching direction, the free end of the cover body C moves over the horizontal receiving edge e of the sliding receiving frame h. When horizontally sliding within the range of the working gap j and following the relative displacement, and when the relative displacement is further increased, as shown in FIG. 11 (B), the cover body C uses the connecting means a at one end as a fulcrum. The inclined end edge b formed at the free end is displaced along the inclined receiving edge g of the sliding receiving frame h, so that it can escape from the relative displacement.

  In addition, as shown in FIG. 12, the cover body C includes a plurality of main bars k arranged in parallel at a narrow interval along the width direction of the joint s and a plurality of cross bars m orthogonal to the main bars k. A rectangular metal cover plate p (see FIG. 13) is arranged on the upper part of the metal rigid base frame n assembled to the structure. Here, the rigid base frame n has the same structure as that generally used as a grating, and the rigid base frame n obtains a high strength that can withstand the load of the vehicle or the like on the cover body C. .

Further, the connecting means a for connecting one end of the cover body C so as to be swingable has a length extending across the lateral width of the cover body C on the lower surface of the end portion of the cover body C as shown in FIGS. While fixing the connecting plate r, a plurality of connecting rods w made of bolts are erected on the horizontal receiving edge v of the holding receiving frame u arranged along the longitudinal direction of the joint s on the side edge of the floor f of the building A. Then, a coiled compression spring x is externally fitted in a state where each coupling rod w is loosely fitted in the vertical insertion holes t formed in the vicinity of both ends of the coupling plate r, and a nut is formed on the upper end thereof. By screwing the spring receiving member y, one end of the cover body C is urged downward by the elastic force of the compression spring x so as to be swingably connected. Here, in the vicinity of both side edges of the cover body C corresponding to the standing position of the connecting rod w, an end of a predetermined main bar k1 (see FIG. 12) is cut out, and a partition orthogonal to the cut end The plate z is disposed, and by forming a mounting recess o having four sides partitioned by the partition plate z, the end bar q and the two main bars k2 and k3, the compression spring x from above is connected to the connecting rod w. A space enabling the external fitting operation and the screwing operation of the spring receiving member y is secured.
JP 10-317516 A (paragraph [0025], FIG. 5 and FIG. 6)

  By the way, the cover C of the conventional floor joint cover device is integrated by joining the intersections of the plurality of main bars k and the plurality of cross bars m constituting the rigid base frame n by welding. Due to dimensional errors that sometimes occur, the bottom surfaces of all the main bars k do not have the same height, and surface distortion is likely to occur on the entire bottom surface of the rigid base frame n. For this reason, in the cover body C formed by joining the metal cover plate p to the upper part of the rigid base frame n by welding, the backlash due to the surface distortion of the bottom surface occurs after the construction. However, if the bottom surface is partially caught on the horizontal receiving edge e of the sliding receiving frame h, there is a problem that smooth sliding is hindered.

  Further, the plurality of main bars k constituting the rigid base frame n are juxtaposed at a narrow interval along the width direction of the joint s, whereby the connecting plate r (see FIG. 13) constituting the connecting means a. The cover body C is disposed on the lower surface of the end portion across the lateral width of the cover body C. For this reason, if there is mortar adhering at the time of construction or pebbles entering after construction between the horizontal receiving edge v of the holding receiving frame u on which the connecting plate r is mounted and the connecting plate r, the connecting plate r There is a problem that the cover body C is loosened due to partial lifting from the horizontal receiving edge v.

  Further, since the plurality of main bars k constituting the rigid base frame n are juxtaposed at a narrow interval along the width direction of the joint s, the compression spring x from above with respect to the coupling rod w constituting the coupling means a. The end of the predetermined main bar k1 (see FIG. 12) is cut out and a partition plate z orthogonal to the cut end is disposed so that the outer fitting operation and the spring receiving member y can be screwed. Thus, a mounting recess o is formed in which the four sides are partitioned by the partition plate z, the end bar q, and the two main bars k2, k3. For this reason, there is a problem that the formation of the mounting recess o is troublesome and the productivity is poor.

  It is an object of the present invention to provide a floor joint cover device including a cover body that can eliminate such problems.

  In the present invention, one end of a cover body that is passed over a joint between floors of adjacent buildings and covers the joint is connected to a side edge of one floor in a swingable manner via a connecting means, In the floor joint cover device in which the other end of the cover body is a free end and the free end is slidably mounted on a side edge of the other floor, the cover body is a flat cover that covers the joint And a plurality of reinforcing support rods arranged along the joint width direction at the lower part of the cover plate and spaced apart from each other to allow flexibility of the cover plate. This is a floor joint cover device.

  Here, as the material of the cover plate and the reinforcing support rod, rolled steel (SS400) or stainless steel (SUS304) is suitable, and a metal plate made of such a material can be used for the cover plate, while the reinforcing support rod A pipe material made of such a material can be used. In addition, the flexibility of the cover plate means an elastic deformation in which the cover plate is bent in the plane direction when an external force is applied from the plane direction, and returns to the original state when the external force disappears.

  In addition, the connecting means is formed along the longitudinal direction of the joints with a plurality of connecting plates provided at one end of the cover body with a vertical insertion hole, and a side edge of the floor of the building. A plurality of holding receiving frames, which are erected on horizontal receiving edges on which one end of the cover body is mounted, are respectively loosely fitted in the insertion holes of the connecting plate, and a pressure receiving member is mounted on the upper portion thereof at a lower position of the cover plate And a resilient member that is externally fitted to the coupling rod, interposed between the pressure receiving member and the coupling plate of the cover body, and biases the cover body downward. The connecting plate is joined to the side surface of the reinforcing support rod at a predetermined height which is spaced above the lower surface of the reinforcing support rod and creates an interval between the pressure receiving member and the elastic member. A configuration is proposed.

  In the floor joint cover device, an inclined edge that is inclined from the lower surface toward the upper surface of the outer end is formed at an end portion on the free end side of the predetermined reinforcing support rod among the plurality of reinforcing support rods. In addition, the front edge of the cover plate is projected from the upper part of the inclined edge toward the other floor side to form a projecting edge, while the side edge of the other floor has a horizontal edge and the horizontal edge A sliding receiving frame having a rising edge that rises at a substantially right angle or an inclined receiving edge that is inclined in the same direction as the inclined end edge is disposed on the horizontal receiving edge of the sliding receiving frame. And the upper end of the working gap formed between the inclined end edge of the reinforcing support rod and the rising edge of the sliding receiving frame or the inclined receiving edge is the protruding end edge of the cover plate. A configuration shielded by is proposed.

  Here, as the predetermined reinforcing support rods on which the inclined edge is formed, two reinforcing support rods positioned at both ends in the lateral width direction of the cover body among the plurality of reinforcing support rods or all the reinforcing support rods It can be a cocoon.

  In the present invention, as described above, the cover body has a flat cover plate that covers the joint, and a mutual space along the joint width direction at the lower portion of the cover plate and allowing the cover plate to be flexible. Since each of the reinforcing support rods is provided with a rigid base frame in which a plurality of main bars and cross bars are integrated by welding, each reinforcing support rod is provided with Since it is difficult for surface distortion to occur on the bottom surface as a whole, the occurrence of backlash due to surface distortion on the bottom surface is eliminated after the construction, and the bottom surface may be partially caught on the horizontal receiving edge of the sliding frame. Therefore, smooth sliding can be performed. In addition, since the plurality of reinforcing support rods are arranged with a mutual interval allowing the cover plate to be flexible, even if surface distortion occurs on the entire bottom surface of each reinforcing support rod, the cover When a load such as a vehicle is applied on the body, the surface distortion is corrected by bending the cover plate between adjacent reinforcing support rods, and the entire bottom surface of each reinforcing support rod is placed horizontally on the slide receiving frame. It can be brought into contact with the receiving edge, thereby preventing backlash.

  In addition, the connecting means for swingably connecting one end of the cover body to the side edge of the one floor is formed with a plurality of connecting plates formed in one end of the cover body, with a vertical insertion hole formed therein, and a building One end of the cover body of the holding receiving frame disposed on the side edge of the floor along the longitudinal direction of the joint is erected on a horizontal receiving edge on which one end of the cover body is mounted, and is loosely fitted in the insertion hole of the connecting plate, respectively. A plurality of connecting rods having a pressure receiving member mounted on the upper portion thereof at a lower position of the cover plate, and externally fitted to the connecting rod and interposed between the pressure receiving member and the connecting plate of the cover body, And a connecting member between the pressure receiving member and the pressure receiving member, and the connecting plate is spaced above the lower surface of the reinforcing support rod. In the configuration where it is joined to the side surface of the reinforcing support rod at the predetermined height position, on the horizontal receiving edge of the holding receiving frame, Even if there are worn mortar or pebbles that have entered after construction, the connecting plate is disposed at a predetermined height above the lower surface of the reinforcing support rod, so that the connecting plate can be It is possible to prevent the cover body C from rattling due to riding up. Further, by joining the connecting plate to the side surface of the reinforcing support rod, the end portion of the main bar is cut out as in the conventional configuration, and a partition plate orthogonal to the cut end is provided to form a mounting recess. Productivity can be improved because it is not necessary to perform troublesome work.

  Further, in the joint cover device for floors, an inclined edge that is inclined from the lower surface toward the outer upper surface is formed at an end portion of the predetermined reinforcing support rod on the free end side among the plurality of reinforcing support rods. In addition, the front edge of the cover plate is projected from the upper part of the inclined edge toward the other floor side to form a projecting edge, while the side edge of the other floor has a horizontal edge and the horizontal edge A sliding receiving frame having a rising edge that rises at a substantially right angle or an inclined receiving edge that is inclined in the same direction as the inclined end edge is disposed on the horizontal receiving edge of the sliding receiving frame. And the upper end of the working gap formed between the inclined end edge of the reinforcing support rod and the rising edge of the sliding receiving frame or the inclined receiving edge is the protruding end edge of the cover plate. In the configuration shielded by the cover plate, the joint is covered by the cover plate. By being above the shielding of the working gap by the projecting edges of the front edge of the cover plate, normally, causing no difference in level and the recess between the cover plate and the other side edge of the floor. In the event of an earthquake, if the adjacent buildings are relatively displaced in the direction in which they are close to each other, the free end of the cover body slides horizontally on the horizontal receiving edge of the sliding receiving frame within the range of the operating gap. When the cover body follows the relative displacement and further relatively displaces, the cover body has the inclined edge formed at the free end against the upper edge of the rising edge of the sliding receiving frame or the inclined receiving edge with the connecting means at one end as a fulcrum. It can be lifted in contact and escape from the relative displacement. Here, a plurality of reinforcing support rods including predetermined reinforcing support rods having inclined end edges formed at the end portions are disposed along the joint width direction, so that after passing the inclined edge shifted upward, It is possible to smoothly slide the bottom surface of each reinforcing support rod in contact with the upper end of the rising edge of the sliding receiving frame or the inclined receiving edge.

A first embodiment of a floor joint cover device according to the present invention will be described with reference to FIGS.
In FIG. 1, A is a building composed of a base-isolated structure whose lower part is supported by a seismic isolation device (not shown) having a buffer function, and B is an artificial ground formed around the building A. It is a building and is adjacent via a joint s. The joint s is formed with a predetermined width along the periphery of the building A, and can absorb the horizontal fluctuation of the building A and the surrounding building B in the event of an earthquake.

  At the side edge of the floor f2 of the building B, as shown in FIG. 1, a supporting step edge 1 that is recessed at a depth corresponding to the thickness of a cover body C to be described later is provided in the width direction of the joint s (FIG. 1). The front slide receiving frame 2 having a horizontal receiving edge 2a is disposed on the front end ridge of the supporting step edge 1. Further, on the rear end side of the support step edge 1, a second horizontal receiving edge 3c is coupled to the rear end of the first horizontal receiving edge 3a via an inclined receiving edge 3b, and further the second horizontal receiving edge 3c. A rear slide receiving frame 3 is provided at the rear end thereof, which is coupled with an inclined receiving edge 3d inclined upward toward the upper surface of the floor f2. Here, the depth of the second horizontal receiving edge 3c is set to a depth corresponding to the vertical width of the bent end bent obliquely downward at the front end portion of the cover plate 5 constituting the cover body C. . As a result, the upper surface of the cover body C is substantially flush with the upper surface of the floor f2. The front sliding receiving frame 2 and the rear sliding receiving frame 3 are arranged so as to extend in a direction along the joint s (the front-rear direction in FIG. 1), and the length thereof is as shown in FIG. In the state in which a plurality of cover bodies C are arranged, the operating gaps 4 and 4 can be slid in the direction along the joint s to the sides of the cover bodies C and C located at both ends thereof. Is set to the length at which each occurs. The front sliding receiving frame 2 and the rear sliding receiving frame 3 can be integrally formed without being divided as shown. Further, as in the modified embodiment shown in FIG. 2, the rear sliding receiving frame 3 is provided with a rising edge 3e that rises substantially perpendicular to the rear end of the first horizontal receiving edge 3a instead of the inclined receiving edge 3b. There may be.

  A cover body C is passed between the floor f1 of the building A and the floor f2 of the building B to cover the joint s. A plurality of the cover bodies C are continuously arranged in the direction along the joint s (see FIG. 9), and each cover body C has one end as a building as shown in FIG. It is connected to the side edge of the floor A of A through a connecting means 13 described later so as to be swingable. Each cover body C has the other end as a free end, and the free end is slidably mounted on the support step edge 1 on which the front slide receiving frame 2 and the rear slide receiving frame 3 are disposed. ing.

  3 to 6, each cover body C includes a flat cover plate 5 that covers the joint s, and a width direction of the joint s along the width direction (left and right in FIG. 1) below the cover plate 5. A plurality of reinforcing support rods 6 are provided, and the reinforcing support rods 6 are juxtaposed in a direction along the joint s with a mutual interval allowing the cover plate 5 to be flexible. The cover plate 5 is made of a metal plate made of rolled steel (SS400) having a thickness of about 4.5 mm. The reinforcing support rod 6 has a height of about 75 mm, a width of about 45 mm, and a wall thickness of about 2.3 mm. Square pipe material made of rolled steel (SS400) is used as the material. Further, the cover plate 5 is formed in a rectangular shape having a length of about 1353 mm and a width of about 998 mm, and a rear wall edge 7 is formed by bending the edge of the cover plate 5 downward at the rear end. As shown in FIG. 5, the reinforcing support rods 6 are arranged at substantially equal intervals on both side edges in the width direction of the back surface of the cover plate 5 and intermediate positions thereof, and are joined to the cover plate 5 by welding applied to a plurality of required locations. Has been. As the material for the cover plate 5 and the reinforcing support bar 6, stainless steel (SUS304) can be used.

  By cutting the reinforcing support rods 6a and 6a obliquely at the end portions on the free end side of the pair of reinforcing support rods 6a and 6a arranged on both side edges in the width direction of the back surface of the cover plate 5, FIG. As shown, inclined end edges 8 that are inclined from the lower surface toward the upper surface of the outer end are formed, and the end portions of the other reinforcing support rods 6b arranged at intermediate positions are the lengths of the inclined end edges 8, respectively. It is shortened that much. Further, on the back surface of the cover plate 5, a reinforcing rod 22 made of an angle member having an L-shaped cross section disposed between the inclined end edges 8, 8 of the reinforcing support rods 6a, 6a is joined by welding. .

  Further, as shown in FIGS. 3 and 5, both end edges in the width direction are provided at one end of a cover body C that is swingably connected to the side edge of the floor f1 of the building A through connecting means 13 described later. A pair of connecting plates 9, 9 constituting the connecting means 13 is disposed in the vicinity of the. The connecting plates 9 and 9 are made of a rectangular metal flat plate in which vertical insertion holes 10 and 10 are formed, and the two edges of the connecting plates 9 and 9 are at a predetermined height above the lower surface of the reinforcing support rod 6. The side surface of the reinforcing support rod 6a and the side surface of the rear wall edge 7 of the cover plate 5 are joined by welding. As shown in FIG. 6, the connecting plates 9 and 9 are arranged in the shape of a strip plate, and both longitudinal ends thereof are adjacent to the reinforcing support rods 6a. It is also possible to join the respective side surfaces of the reinforcing support rod 6b by welding.

  At the free end of the cover body C, a gap having an appropriate width is formed between the inclined end edge 8 and the inclined receiving edge 3b (see FIG. 1) or the rising edge 3e (see FIG. 2) of the rear sliding receiving frame 3 described above. Thus, it is mounted on the supporting step edge 1 provided with the horizontal receiving edge 2a of the front sliding receiving frame 2 and the first horizontal receiving edge 3a of the rear sliding receiving frame 3, and the gap is used as the operating gap 11. . Further, the front edge of the cover plate 5 protrudes from the upper part of the inclined edge 8 toward the floor f2 side of the building B to become a protruding edge 12, and the operating gap 11 is formed by the protruding edge 12. Is shielded from above.

The connecting means 13 will be described with reference to FIG.
On the side edge of the floor f1 of the building A, a holding frame 14 is disposed so as to extend in a direction along the joint s. The holding receiving frame 14 is formed in an L-shaped cross section having a horizontal receiving edge 14a and a vertical edge 14b, and one end of each reinforcing support rod 6 constituting the cover body C described above is formed on the upper surface of the horizontal receiving edge 14a. Is on board. Further, a plurality of connecting rods 15 made of bolts that are inserted into the horizontal receiving edge 14a from the lower surface side thereof and are fixed to the horizontal receiving edge 14a are positions corresponding to the insertion holes 10, 10 of the connecting plates 9, 9. Respectively. Each connecting rod 15 is loosely fitted from below into the insertion holes 10 and 10 of the connecting plates 9 and 9 in a state where one end of each reinforcing support rod 6 constituting the cover body C is mounted on the horizontal receiving edge 14a. A pressure receiving member 16 made of a nut is screwed to the upper end of the cover plate 5 at a position below the cover plate 5. Further, a resilient member 17 made of a coil spring is externally fitted to each connecting rod 15 in a compressed state so as to be interposed between the pressure receiving member 16 and the connecting plate 9. The cover body C is always urged downward by the elastic force. As the downward urging means of the cover body C, a rubber ring (not shown) can be used instead of the coil spring. As a result, connecting means 13 for connecting one end of the cover body C in a swingable manner to the side edge of the floor f1 of the building A is constructed. In this connected state, the upper surface of the cover plate 5 is made to be the same height as the upper surface of the floor f1 of the building A. Further, the cover plate 5 is provided with operation holes 18 and 18 that enable the operation of mounting the resilient member 17 and the pressure receiving member 16 above the insertion holes 10 and 10 of the connecting plates 9 and 9. The operating holes 18 and 18 are fitted with shielding caps 19 and 19 in a detachable manner.

  Further, on the upper surface of the cover plate 5, an anti-slip portion 23 (see FIG. 4) composed of an infinite number of convex portions having a predetermined shape is integrally formed.

Next, the operation mode of the floor joint cover device having such a configuration will be described.
The cover body C is arranged so that the upper surface of the cover plate 5 is substantially flush with the upper surface of the floor f1 of the building A and the upper surface of the floor f2 of the building B. As shown in FIG. 3, there is no step between the cover body C and the floor f1 of the building A or the floor f2 of the building B. Further, when the building A and the adjacent building B are relatively displaced relatively in the direction of the earthquake, the free end of the cover body C slides horizontally within the range of the working gap 11 and When the cover body C follows the relative displacement and is further largely displaced, the inclined end edge 8 formed at the free end of the cover body C is at the upper end of the inclined receiving edge 3b (see FIG. 1) or the rising edge 3e (see FIG. 2). As shown in FIG. 8, it is possible to escape from the relative displacement by tilting with one end connected by the connecting means 13 as a fulcrum as shown in FIG. Here, the plurality of reinforcing support rods 6 including predetermined reinforcing support rods 6a and 6a having inclined end edges 8 formed at the end portions are displaced along the width direction of the joint s. After passing through the inclined end edge 8, the bottom surface of each reinforcing support rod 6 contacting the upper end of the rising edge 3e or the inclined receiving edge 3b can be smoothly slid.

  Further, when the building A and the adjacent building B are relatively displaced in the direction away from each other, the cover body C has its free end on the support step 1 and in the opposite direction to the inclined receiving edge 3b (or the rising edge 3e). It slides horizontally toward and follows its relative displacement.

  When the building A and the building B return to the steady position after the earthquake, the free end of the cover body C also returns to the steady position shown in FIG. 1, and the cover body C is in the steady state. Return to.

  When the building A and the adjacent building B are relatively displaced in the front-rear direction (the direction along the joint s), the free end of the cover body C slides on the support step edge 1 in the front-rear direction. Follow relative displacement. In this case, as shown in FIG. 9, a plurality of cover bodies C arranged continuously along the joint s are positioned on the sides of the cover bodies C, C located at both ends thereof, Since the operating gaps 4 and 4 are provided at the side end portions of the moving frame 2 and the rear sliding receiving frame 3, it is possible to slide the free ends of the cover bodies C in the front-rear direction by the operating gaps 4 and 4. It has become.

  Further, when the building A and the adjacent building B are relatively displaced in the vertical direction, the cover body C uses the connecting means 13 as a fulcrum at one end connected to the side edge of the floor f1 of the building A. It tilts with the vertical movement of A or the adjacent building B and follows its relative displacement.

  In such a configuration, as described above, the cover body C includes the flat cover plate 5 that covers the joint s, and the lower portion of the cover plate 5 along the width direction of the joint s. And a plurality of reinforcing support rods 6 arranged with an interval between them to allow bending, compared to the conventional cover body C having the rigid base frame n (see FIG. 12), Since it is difficult for surface distortion to occur at the bottom surface of the reinforcing support rod 6 as a whole, the occurrence of backlash due to surface distortion at the bottom surface is eliminated after the construction, and the bottom surface is partially supported by the front sliding frame 2. Since the horizontal receiving edge 2a and the first horizontal receiving edge 3a of the rear sliding receiving frame 3 are not caught, smooth sliding can be performed. In addition, since the plurality of reinforcing support rods 6 are arranged with a mutual interval allowing the cover plate 5 to be flexible, surface distortion is generated on the entire bottom surface of each reinforcing support rod 6. However, when a load of a vehicle or the like is applied on the cover body C, the cover plate 5 is bent at a portion between the adjacent reinforcing support rods 6, so that the surface distortion is corrected. The bottom surface can be brought into contact with the horizontal receiving edge 2a of the front sliding receiving frame 2 and the first horizontal receiving edge 3a of the rear sliding receiving frame 3, thereby preventing backlash.

  Further, the plurality of connecting plates 9 constituting the connecting means 13 are spaced apart from the pressure receiving member 16 at a predetermined height position where the elastic member 17 can be interposed and above the lower surface of the reinforcing support rod 6. Since the reinforced support rod 6 is joined to the side surface, even if there is mortar adhering at the time of construction or pebbles entering after the construction on the horizontal receiving edge 14a of the holding support frame 14, the connecting plate 9 is provided with the reinforcement support rod. By being arranged at a predetermined height position above the lower surface of 6, it is possible to prevent the cover body C from rattling due to the connecting plate 9 riding on the mortar, pebbles or the like. it can. Further, by joining the connecting plate 9 to the side surface of the reinforcing support rod 6, the end portion of the main bar is cut off as in the conventional configuration, and a partition plate orthogonal to the cut end is provided to attach the connecting plate o. Since it is not necessary to perform the troublesome work of forming (see FIG. 12), productivity can be improved.

  Furthermore, in the joint cover device for floors, of the plurality of reinforcing support rods 6, inclined end portions inclined toward the outer end upper surface from the lower surface thereof at the end portions on the free end side of the predetermined reinforcing support rods 6a, 6a While the edge 8 is formed, the front edge of the cover plate 5 protrudes from the upper part of the inclined end edge 8 toward the other floor f2 to form the protruding edge 12, while the front edge of the cover plate 5 is formed on the side edge of the other floor f2. And a rear slide provided with a first horizontal receiving edge 3a and a rising edge 3e rising substantially perpendicular to the outer end of the first horizontal receiving edge 3a or an inclined receiving edge 3b inclined in the same direction as the inclined end edge 8. A receiving frame 3 is disposed, and an end portion on the free end side of the reinforcing support rod 6 is mounted on the first horizontal receiving edge 3 a of the rear sliding receiving frame 3, and the inclined end edge of the reinforcing support rod 6 8 and above the working gap 11 formed between the rising edge 3e or the inclined receiving edge 3b of the rear sliding receiving frame 3 In the configuration shielded by the protruding edge 12 of the cover plate 5, the joint s is covered by the cover plate 5, and above the working gap 11 by the protruding edge 12 of the front edge of the cover plate 5. As a result of the shielding, there is no step or a recess between the cover plate 5 and the side edge of the other floor f2. Further, when the two adjacent buildings A and B are relatively displaced in the direction in which the two adjacent buildings A and B approach at the time of the earthquake, the cover body C has the inclined edge 8 formed at the free end with the connecting means 13 at one end as a fulcrum. However, the upper end of the rising edge 3e of the rear sliding receiving frame 3 or the inclined receiving edge 3b is brought into contact with the upper end and moved upward, and can escape from the relative displacement. A plurality of reinforcing support rods 6 including predetermined reinforcing support rods 6a, 6a each having an inclined edge 8 formed at the end are disposed along the width direction of the joint s, so that the slope is shifted upward. After the end edge 8 passes, it is possible to smoothly slide the bottom surfaces of the reinforcing support rods 6 in contact with the upper end of the rising edge 3e of the rear sliding receiving frame 3 or the inclined receiving edge 3b.

  FIG. 10 shows a second embodiment, in which the floor f2 of the building B adjacent to the building A via the joint s is compared with the height of the floor f1 of the building A. The front sliding receiving frame 2 provided with a horizontal receiving edge 2a on the side edge of the floor f2 and the rear sliding receiving frame 20 provided with a relatively long horizontal receiving edge 20a. Is arranged. The rear slide receiving frame 20 can be divided into front and rear parts. Further, the cover body C, which is passed over the joint s between the floor f1 of the building A and the floor f2 of the building B and covers the joint s, has one end at the side edge of the floor f1 of the building A as described above. The other end of the free end is slidably mounted on the side edge of the floor f2 of the building B.

  As in the first embodiment, the cover body C has a flat cover plate 5 that covers the joint s, and a lower portion of the cover plate 5 along the width direction of the joint s and allows the cover plate 5 to be flexible. And a plurality of reinforcing support rods 6 arranged with a mutual interval therebetween. In addition, the cover body C is provided with a slope portion 21 in which the front edge of the cover plate 5 protrudes forward from the front end of each reinforcing support rod 6 and is inclined downward. Each of the reinforcing support rods 6 is supported by a support plate 24 protruding from the reinforcement support rod 6. The slope 21 prevents a steep step between the upper surface of the end of the cover body C on the free end side and the upper surface of the floor f2 of the building B.

  In addition, about the component which is common in 1st Example, the code | symbol same as 1st Example is attached | subjected and duplication description is abbreviate | omitted.

  In the floor joint cover device having such a configuration, the cover body C always covers the joint s at the steady position shown in FIG. When the building A and the adjacent building B are relatively displaced in the earthquake, the free end of the cover body C slides horizontally on the side edge of the floor f2 of the building B. Follow the relative displacement of the lever.

  Further, when the building A and the adjacent building B are relatively displaced in the front-rear direction (the direction along the joint s), the free end of the cover body C extends in the front-rear direction on the side edge of the floor f2 of the building B. Slide to follow the relative displacement.

  Further, when the building A and the adjacent building B are relatively displaced in the vertical direction, the cover body C uses the connecting means 13 as a fulcrum at one end connected to the side edge of the floor f1 of the building A. It tilts with the vertical movement of A or the adjacent building B and follows its relative displacement.

  Even in the second embodiment, the cover body C includes the flat cover plate 5 that covers the joint s, the lower portion of the cover plate 5 along the width direction of the joint s, and the cover plate 5. Since it comprises a plurality of reinforcing support rods 6 arranged with a mutual interval allowing flexibility, compared to a conventional cover body C having a rigid base frame n (see FIG. 12), Since it is difficult for surface distortion to occur on the bottom surface of each reinforcing support rod 6 as a whole, the occurrence of backlash due to surface distortion on the bottom surface is eliminated after the construction, and the bottom surface is partially a front sliding receiving frame. Since the second horizontal receiving edge 2a and the horizontal receiving edge 20a of the rear sliding receiving frame 20 are not caught, smooth sliding can be performed. In addition, since the plurality of reinforcing support rods 6 are arranged with a mutual interval allowing the cover plate 5 to be flexible, surface distortion is generated on the entire bottom surface of each reinforcing support rod 6. However, when a load of a vehicle or the like is applied on the cover body C, the cover plate 5 is bent at a portion between the adjacent reinforcing support rods 6, so that the surface distortion is corrected. The bottom surface can be brought into contact with the horizontal receiving edge 2a of the front sliding receiving frame 2 and the horizontal receiving edge 20a of the rear sliding receiving frame 20, whereby the occurrence of backlash can be prevented.

  In each of the above-described embodiments, the building A is a seismic isolation structure and the building B is a structure made of artificial ground. Instead, the structure A is a structure made of artificial ground. The object B may be a seismically isolated structure. Moreover, the floor joint cover device according to the present invention can be applied to a general building other than a seismic isolation structure whose lower part is supported by the seismic isolation device.

It is a longitudinal front view which shows the construction state of the joint cover apparatus for floors concerning a 1st Example. It is a vertical front view which shows the construction state of the floor joint cover apparatus concerning the modification of a 1st Example. It is a vertical front view of the cover body C which comprises the floor joint cover apparatus same as the above. It is a top view of the cover body C same as the above. It is a bottom view of the cover body C same as the above. It is a bottom view of the cover body C which shows the other arrangement | positioning aspect of the connection board. It is an enlarged view of the connection means 13 part. FIG. 6 is an operation explanatory diagram of a cover body C. It is a top view which shows the state which has arrange | positioned several cover bodies C continuously in the direction in alignment with the joint s. It is a vertical front view which shows the construction state of the joint cover apparatus for floors concerning a 2nd Example. (A) is a schematic longitudinal front view of a floor joint cover device having a conventional structure, and (B) is an operation explanatory view thereof. It is a top view of the joint joint cover apparatus for floors provided with the conventional cover body C. It is an enlarged view of the conventional connection means a part.

Explanation of symbols

A Building B Building C Cover body f1 Floor f2 Floor s Joint 3 Rear sliding frame (sliding frame)
3a horizontal receiving edge 3b inclined receiving edge 3e rising edge 5 cover plate 6, 6a, 6b reinforcing support rod 8 inclined end edge 9 connecting plate 10 insertion hole 11 operating gap 12 protruding end edge 13 connecting means 14 holding receiving frame 14a horizontal receiving edge 15 Connecting rod 16 Pressure receiving member 17 Elastic member

Claims (3)

One end of a cover body that is passed over a joint between floors of adjacent buildings and covers the joint is swingably connected to a side edge of one floor via a connecting means. In the floor joint cover device in which the other end is a free end and the free end is slidably mounted on the side edge of the other floor,
The cover body is a flat cover plate that covers the joint, and a plurality of reinforcements disposed along the joint width direction at the lower portion of the cover plate and with a mutual interval allowing the cover plate to be flexible. A floor joint cover device comprising a support rod. The connecting means is
A plurality of connecting plates formed in one end of the cover body, with an insertion hole in the vertical direction,
A holding receiving frame disposed on the side edge of the floor of the building along the longitudinal direction of the joint is erected on a horizontal receiving edge on which one end of the cover body is mounted, and is loosely fitted in the insertion hole of the connecting plate, respectively. A plurality of connecting rods having a pressure receiving member mounted on the upper portion thereof at a lower position of the cover plate;
A fitting member that is externally fitted to the connecting rod, is interposed between the pressure receiving member and the connecting plate of the cover body, and includes a resilient member that biases the cover body downward;
The connecting plate is joined to the side surface of the reinforcing support rod at a predetermined height that is spaced above the lower surface of the reinforcing support rod, with a space where the elastic member can be interposed between the connecting plate and the pressure receiving member. The floor joint cover device according to claim 1. Among the plurality of reinforcing support rods, an inclined edge that is inclined from the lower surface thereof toward the upper surface of the outer end is formed at an end portion on the free end side of the predetermined reinforcing support rod, and the front edge of the cover plate is defined as the inclined edge. While projecting from the top of the edge toward the other floor side as a protruding edge,
A sliding receiving frame having a horizontal receiving edge and a rising edge rising substantially perpendicular to the outer end of the horizontal receiving edge or an inclined receiving edge inclined in the same direction as the inclined end edge is arranged on the side edge of the other floor. Established,
An end portion on the free end side of the reinforcing support rod is mounted on the horizontal receiving edge of the sliding receiving frame, and an inclined end edge of the reinforcing supporting rod and a rising edge or an inclined receiving edge of the sliding receiving frame. The floor joint cover device according to claim 1 or 2, wherein an upper portion of the working gap formed therebetween is shielded by a protruding edge of the cover plate.

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