JP5328565B2 - Floor joint cover device - Google Patents

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 buffering function, horizontal shaking during an earthquake tends to increase. Around such a base-isolated structure, a relatively wide joint is formed between the adjacent artificial ground structure, and it is suitable for use as a joint for such a base-isolated structure. A floor joint cover device that can be used has already been proposed by the present applicant (see, for example, Patent Document 1).

  In such a floor joint cover device, one end of a cover body that is passed to the joint between floors of adjacent buildings is connected to a side edge of one floor in a swingable manner via a connecting means, and The other end of the cover body is a free end, and the free end is slidably mounted on the side edge of the other floor. And when an earthquake and a relative displacement so that one building and the other building approach and separate, the free end of the cover body slides on the floor of the other building and the relative displacement occurs. It comes to follow.

  Further, as shown in FIG. 9A, as the conventional connecting means a for connecting one end of the cover body C, the bottom surface of the end portion of the cover body C is positioned in the vicinity of the both end portions of the cover body C in the vertical direction. Each of the connecting plates b provided with the insertion holes c is arranged on the horizontal edge e of the holding receiving frame d arranged along the longitudinal direction of the joint s on the side edge of the floor f of the building A. A plurality of connecting rods g are erected in correspondence with the positions where the insertion holes c of the respective connecting plates b are formed, and each of the connecting rods g is loosely fitted into the insertion holes c from below so as to form a coiled compression spring. h is externally fitted, and a spring receiving member j made of a nut is screwed onto the upper end of the h, so that one end of the cover body C is urged downward by the elastic force of the compression spring h so as to be swingable. Is configured to do.

JP 10-317516 A

  By the way, in the conventional connecting means a, in order to make one end of the cover body C swingable through the connecting rod g loosely fitted in the insertion hole c of the connecting plate b, the diameter ( The diameter (usually about 22 mmφ) of the insertion hole c of the connecting plate b is set to be larger than that of the normal connection plate b, and the vertical edge k (see FIG. 9A) of the holding receiving frame d and the cover body C A relatively wide gap n (usually about 4 mm) for allowing the cover body C to swing is also provided between the two edges. Therefore, when the cover body C is displaced in the joint s direction due to an impact or vibration caused by an earthquake or traffic on the cover body C, as shown in FIG. 9B, the vertical edge k of the holding receiving frame d and the cover body C There is a possibility that a gap n between the edges of the pedestrian and the heel of the pedestrian may be greatly opened, and a pedestrian's high-heeled heel enters the gap n.

  The present invention has been made to solve such a problem, and when the cover body is displaced in the joint direction, it automatically returns to the original position, so that the vertical edge of the holding receiving frame and the cover body An object of the present invention is to provide a floor joint cover device that can prevent a large gap from being left between the edges.

  According to the present invention, one end of a cover body that is passed to a joint between floors of adjacent buildings is connected to a side edge of one floor via a connecting means, and the other end of the cover body is connected to a free end. In the floor joint cover device in which the free end is slidably mounted on the side edge of the other floor, a horizontal receiving edge on which one end of the cover body is mounted and an outer end of the horizontal receiving edge A holding receiving frame having a vertical edge rising upward is provided on the horizontal receiving edge, and extends along the width direction of the joint, and includes a guide inclined surface that inclines with a downward slope toward the vertical edge direction. A plurality of guide members and a lower end of one end of the cover body, the guide member is formed in a long hole shape that can be loosely fitted from below, and the hole end positioned on the vertical edge side of the holding receiving frame is the guide member In-situ return means comprising a plurality of connecting plate portions having insertion holes that contact the inclined guide surface A floor joint cover device characterized by comprising.

  Here, the inclination angle of the guide inclined surface is set to an angle at which the end of the cover body can slide down by its own weight when the hole end of the insertion hole rides on the guide inclined surface. The guide inclined surface is preferably provided so as to incline with a downward slope toward the vertical edge direction of the holding receiving frame and reach the horizontal receiving edge. Thereby, the hole end located in the vertical edge side of a holding | maintenance receiving frame of the long hole-shaped insertion hole provided in the connection board part can be always contact | abutted on the guide inclined surface of a guide member.

  In the floor joint cover device described above, a plurality of connecting rods erected on the horizontal receiving edge of the holding receiving frame are disposed on the joint side of the guide member, respectively, and the connecting plate portion is provided above the connecting rod. A configuration is proposed in which one end of the cover body is connected to a side edge of one floor by detachably attaching a retaining member having a width wider than the insertion hole.

  In addition, a configuration is proposed in which the cover member is connected to the side edge of one floor by detachably attaching a retaining member wider than the insertion hole of the connecting plate to the upper part of the guide member. Is done.

  As described above, the present invention is arranged on the horizontal receiving edge of the holding receiving frame having the horizontal receiving edge on which one end of the cover body is mounted and the vertical edge rising upward from the outer end of the horizontal receiving edge. A plurality of guide members having guide inclined surfaces extending along the width direction of the joints and inclined downwardly toward the vertical edge direction, and disposed at a lower portion of one end of the cover body, It is formed in the shape of a long hole in which the member can be loosely fitted from below, and includes a plurality of connecting plate portions having insertion holes in which the hole ends positioned on the vertical edge side of the holding receiving frame abut on the guide inclined surface of the guide member Since the original position returning means is provided, when the cover body is displaced in the joint direction due to an earthquake or the like, the hole end of the insertion hole located on the vertical edge side of the holding receiving frame temporarily runs on the inclined guide surface. However, the guide inclined surface is inclined downwardly toward the vertical edge direction. Ri, cover a hole edge of the insertion hole by the weight of the cover body slides down toward the upper guide inclined surface in the vertical edge direction returns to the original position. Thereby, it can be prevented that a large gap remains between the vertical edge of the holding receiving frame and the edge of the cover body.

  In addition, a plurality of connecting rods erected on the horizontal receiving edge of the holding receiving frame are respectively arranged on the joint side of the guide member, and a retaining member wider than the insertion hole of the connecting plate portion is provided on the upper portion of the connecting rod. In the configuration of connecting means for connecting one end of the cover body to the side edge of one floor by detachably mounting, one end of the cover body is connected to the side edge of one floor so as to be movable up and down. In addition, even if one end of the cover body moves up, the retaining member comes into contact with the hole edge of the insertion hole of the connecting plate portion from above, so that the escape of the one end of the cover body from the holding receiving frame is prevented, The connected state can be maintained.

  In addition, by attaching a retaining member having a width wider than the insertion hole of the connecting plate portion to the upper portion of the guide member so as to be detachable, the connecting member is connected to one side edge of one floor. In the same manner as described above, one end of the cover body can be connected to the side edge of one floor so as to be movable up and down, and the retaining member can be inserted into the connecting plate portion even if one end of the cover body moves up. By coming into contact with the hole edge of the hole from above, it is possible to prevent the one end of the cover body from coming out of the holding receiving frame and to maintain the connected state. Furthermore, in this configuration, since it is not necessary to erect a connecting rod on the horizontal receiving edge of the holding receiving frame, the connecting structure can be simplified and productivity can be improved.

It is a longitudinal cross-sectional view which shows the construction state of the floor joint cover apparatus concerning a 1st Example. It is a longitudinal cross-sectional view of the cover body C which comprises the joint joint apparatus for floors same as the above. It is a top view of the cover body C same as the above, the slide receiving frame 2, and the holding | maintenance receiving frame 19. FIG. It is the disassembled perspective view which cut the principal part longitudinally. (A) is an enlarged vertical cross-sectional view of the main part, (B) is an enlarged cross-sectional view of the main part. It is operation | movement explanatory drawing of the principal part. (A) is an enlarged vertical sectional view of the main part provided with the guide member 20 according to the second embodiment, and (B) is an enlarged horizontal sectional view thereof. FIG. 6 is an enlarged longitudinal sectional view of a main part showing another arrangement mode of the connecting plate portion 18. (A) is an enlarged vertical cross-sectional view of a conventional connecting means a portion, and (B) is an explanatory view of its operating state.

  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 having a base-isolated structure whose lower part is supported by a base-isolating device (not shown) having a buffer function, and B is a building made of artificial ground formed around the building A. It is adjacent via the 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). In the left and right direction), the support step edge 1 is provided with a slide receiving frame 2. The sliding receiving frame 2 is coupled to a horizontal lower receiving edge 3a covering the upper surface of the supporting step edge 1 and a rising edge 3b from the rear end of the lower receiving edge 3a, and the front upper surface of the floor f2. And a horizontal upper receiving edge 3c. The sliding receiving frame 2 is disposed so as to extend in a direction along the joint s (front-rear direction in FIG. 1), and the length thereof is a length that allows a plurality of cover bodies C to be arranged side by side. It has become.

  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. Each cover body C has one end of the floor f1 of the building A as shown in FIG. It connects with the side edge via the connection means 27 mentioned later. 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 slide receiving frame 2 is disposed.

  As shown in FIGS. 2 and 3, each cover body C is provided with a shallow rectangular filling casing portion 5 having an open top surface and a front portion of the filling casing portion 5 so as to extend forward. End cover plate 11 is provided. The casing 5 is made of a thin steel plate made of stainless steel or steel. The bottom plate 6 has a rectangular shape, and left and right side wall plates respectively erected on both side edges along the joint width direction of the bottom plate 6. 7, a rear wall plate 8 erected on the rear edge of the bottom plate 6, and a front wall plate 9 erected on the front edge of the bottom plate 6. The contact edges of the left and right side wall plates 7, 7 and the rear wall plate 8 are fixed by welding. Here, the left and right side wall plates 7, 7, the rear wall plate 8 and the front wall plate 9 are provided by bending a belt plate portion integrally formed on the four side edges of the bottom plate 6 upward at a substantially right angle. Yes. The left and right side wall plates 7, 7 and the rear wall plate 8 and the front wall plate 9 can be provided by separately bonding the bottom plate 6 to the four edges of the bottom plate 6 by welding. . The left and right side wall plates 7 and 7 and the rear wall plate 8 are bent in a band shape with the upper edges thereof inward, and the bent edges serve as reinforcing edges. On the bottom plate 6, a plurality of reinforcing rods 10 that also serve as mortar stoppers are disposed at predetermined intervals along the width direction of the joint s. A required portion of the reinforcing rod 10 is fixed to the upper surface of the bottom plate 6 through welding, and the strength in the surface direction of the bottom plate 6 is improved by the reinforcing rod 10.

  The end cover plate 11 disposed in the front part of the filling housing part 5 is formed in an L-shaped cross section using a steel plate that is slightly thicker than the thickness of the filling housing part 5 as a material. The rear wall is provided with a shielding wall portion 11a bent at a substantially right angle downward. In the end cover plate 11, the left and right side end portions of the shielding wall portion 11a are fixed to the front end portions of the side wall plates 7 and 7 of the filling housing portion 5 by welding, and the shielding wall portion 11a The front opening of the filling housing part 5 is shielded. Further, a front wall plate 9 erected on the front edge of the bottom plate 6 is fixed to the front surface of the shielding wall portion 11a through welding.

  In addition, in the filled casing portion 5 of each cover body C, the same pavement material 26 as the pavement material 26 composed of the mortar 12 and the tiles 13 laid on the surrounding floors f1 and f2 (see FIG. 1) at the time of construction. Will be filled.

  As shown in FIG. 1, the free end of the cover body C has an appropriate width between the front wall plate 9 and the rising edge 3 b of the slide receiving frame 2 described above. It is mounted on the supporting step edge 1 on which the lower receiving edge 3a is disposed, and the gap is used as the working gap 15. Further, the end cover plate 11 protrudes toward the floor f2 side of the building B and is mounted on the upper receiving edge 3c of the slide receiving frame 2. The end cover plate 11 allows the operating gap to be mounted. The upper part of 15 is shielded.

Next, the main part of the present invention will be described.
As shown in FIGS. 3 to 5, at one end of the cover body C connected to the side edge of the floor f1 of the building A, guide members to be described later are located in the vicinity of both side edges along the joint width direction of the bottom plate 6. Long hole-like insertion holes 16 and 16 are formed along the width direction of the joint s so that 20 and the connecting rod 22 (see FIG. 4) can be freely fitted from below. The insertion holes 16, 16 are surrounded by mortar blocking cylinders 17, 17 made of steel pipes whose lower ends are welded to the bottom plate 6. In this first embodiment, the partial region is the connecting plate portion 18 provided with the insertion hole 16 in the present invention.

  On the other hand, a holding frame 19 is disposed on the side edge of the floor f1 of the building A so as to extend in the direction along the joint s. As shown in FIG. 5, the holding receiving frame 19 is formed in an L-shaped cross section having a horizontal receiving edge 19a and a vertical edge 19b rising upward from the outer end of the horizontal receiving edge 19a. On the upper surface, triangular block-shaped guide members 20 and 20 are arranged at positions corresponding to the insertion holes 16 and 16 of the bottom plate 6. Each guide member 20 includes a guide inclined surface 21 that extends along the width direction of the joint s and is inclined downward toward the vertical edge 19b of the holding receiving frame 19 to reach the horizontal receiving edge 19a. The lower part is fixed to the horizontal receiving edge 19a through welding. Here, the inclination angle of the guide inclined surface 21 is set to a steep slope of about 40 ° to 50 °, and the end portion of the cover body C riding on the guide inclined surface 21 can be slid down by its own weight. It can be done. As shown in FIG. 5, the guide members 20 and 20 are provided on the bottom plate 6 of the filling housing portion 5 in a state where one end of the filling housing portion 5 constituting the cover body C is mounted on the horizontal receiving edge 19 a. The connecting plate portions 18, 18 are loosely fitted into the insertion holes 16, 16 from below, and the hole ends 16 a, 16 a of the insertion holes 16, 16 located on the vertical edge 19 b side of the holding receiving frame 19 are guided inclined surfaces 21. , 21 is contacted. The guide members 20 and 20 of the holding receiving frame 19 and the connecting plate portions 18 and 18 provided with the insertion holes 16 and 16 constitute the original position returning means of the cover body C. Further, as shown in FIG. 5, in a steady state in which one end of the filling housing part 5 constituting the cover body C is mounted on the horizontal receiving edge 19 a, the vertical edge 19 b of the holding receiving frame 19 and the cover body C The gap n generated between the edges is set to about 2 mm, which is narrower than the conventional configuration.

  A plurality of connecting rods 22 made of bolts that are inserted from the lower surface side of the holding receiving frame 19 and fixed to the horizontal receiving edge 19a through welding are inserted into the insertion holes of the connecting plate portion 18. 16 and 16, respectively. Each connecting rod 22 is disposed adjacent to the joint s side of the guide member 20, and the connecting rod 22 and the guide member 20 are fixed to each other through welding. Further, the upper portion of each connecting rod 22 protrudes to a height position that is higher than the guide member 20. As shown in FIG. 5, each connecting rod 22 is connected to each connecting plate portion provided on the bottom plate 6 in a state where one end of the filling housing portion 5 constituting the cover body C is mounted on the horizontal receiving edge 19a. 18 is inserted into the insertion hole 16 from below, and a retaining member 23 made of a nut provided with a hook or washer is attached to the upper portion thereof by screwing. The retaining member 23 is formed wider than the insertion hole 16 of the connecting plate portion 18, thereby preventing the connecting plate portion 18 from escaping upward. The connecting rods 22 and the retaining members 23 constitute connecting means 27 for connecting one end of the cover body C to the side edge of the floor f1 of the building A. In addition, an upper portion of the mortar blocking cylinder 17 surrounding each insertion hole 16 is an operation port 24 (see FIG. 4) that enables the retaining member 23 to be attached. A shield cover 25 having a cylindrical body 25a on the lower surface is detachably fitted.

Next, the operation mode of the floor joint cover device having such a configuration will be described.
As shown in FIG. 1, in the filled casing portion 5 of the cover body C, as shown in FIG. Is filled. Further, the cover body C is disposed so that the upper surface of the filled casing portion 5 filled with the pavement material 26 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. Is done. When the building A and the adjacent building B are relatively displaced in an earthquake, the free end of the cover body C slides horizontally on the support step 1 within the operating gap 15. And follow the relative displacement.

  Further, when the building A and the adjacent building B are relatively displaced in the direction away from each other, the cover body C slides horizontally on the support step edge 1 in the direction opposite to the rising edge 3b. And follow the relative displacement.

  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. Furthermore, when the building A and the adjacent building B are relatively displaced in the vertical direction, the cover body C has the one end connected to the side edge of the floor f1 of the building A by the connecting means 27 as a fulcrum. It tilts with the vertical movement of A or the adjacent building B and follows its relative displacement.

  In such a configuration, when the cover body C is displaced in the joint s direction due to an earthquake or vibration caused by traffic on the cover body C, as shown in FIG. 6, it is located on the vertical edge 19 b side of the holding receiving frame 19. Although the hole end 16a of the insertion hole 16 is temporarily on the guide inclined surface 21 of the guide member 20, the guide inclined surface 21 is inclined downward toward the vertical edge 19b, Due to the weight of the cover body C, the hole end 16a of the insertion hole 16 slides down on the guide inclined surface 21 in the direction of the vertical edge 19b, and the cover body C returns to the original position (see FIG. 5A). Thereby, it can be prevented that a large gap remains between the vertical edge 19b of the holding receiving frame 19 and the end edge of the cover body C.

  FIG. 7 shows a second embodiment. In the second embodiment, a round bar-shaped mounting portion 28 is integrally formed at the edge of each guide member 20 on the joint s side. A screw hole 29 opening at the upper end is formed in the mounting portion 28, and a retaining member 23 'made of a bolt provided with a flange or a washer is screwed into the screw hole 29 from above. The retaining member 23 ′ is formed wider than the insertion hole 16 of the connecting plate portion 18, thereby preventing the connecting plate portion 18 from escaping upward. The retaining member 23 'of each guide member 20 constitutes connecting means 27 for connecting one end of the cover body C to the side edge of the floor f1 of the building A. 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 this configuration, as in the first embodiment described above, one end of the cover body C can be connected to the side edge of the floor f1 of the building A so as to be movable up and down, and one end of the cover body C is Even if it moves upward, the retaining member 23 ′ comes into contact with the hole edge of the insertion hole 16 of the connecting plate portion 18 from above, so that the one end of the cover body C is prevented from coming out of the holding receiving frame 19, and the connected state is maintained. Can be held. In particular, in this configuration, since it is not necessary to erect the connecting rod 22 (see FIG. 5) on the horizontal receiving edge 19a of the holding receiving frame 19, the connecting structure can be simplified and the productivity is improved. be able to.

  In both of the above-described embodiments, the cover body C having the filling housing portion 5 is provided with the insertion hole 16 by a partial region in which the bottom plate 6 of the filling housing portion 5 is surrounded by the mortar blocking cylinder 17. The connecting plate portion 18 is configured, but a cover body C that does not include the filling housing portion 5, for example, as shown in FIG. 8, a flat cover plate 31 is disposed on the upper portion of the grating base 30. In the cover body C and the like, the connection plate portion 18 can be provided by joining the connection plate portion 18 formed separately to the lower part of one end of the cover body C.

A building B building C cover body f1 floor f2 floor s joint 16 insertion hole 16a hole end 18 connecting plate part (original position return means)
19 Holding receiving frame 19a Horizontal receiving edge 19b Vertical edge 20 Guide member (original position returning means)
21 guide inclined surface 22 connecting rod 23 retaining member 23 'retaining member 27 coupling means

Claims (3)

One end of the cover body passed to the joint between the floors of adjacent buildings is connected to the side edge of one floor via a connecting means, and the other end of the cover body is a free end, and the free body In the floor joint cover device in which the end is slidably mounted on the side edge of the other floor,
A holding receiving frame having a horizontal receiving edge on which one end of the cover body is mounted and a vertical edge rising upward from the outer end of the horizontal receiving edge is disposed on the horizontal receiving edge and extends along the width direction of the joint. A plurality of guide members provided with a guide inclined surface extending in a downward gradient toward the vertical edge direction;
It is arranged at the lower part of one end of the cover body, is formed in the shape of a long hole in which the guide member can be loosely fitted from below, and the hole end located on the vertical edge side of the holding receiving frame abuts on the guide inclined surface of the guide member. A floor joint cover device comprising original position returning means comprising a plurality of connecting plate portions having insertion holes.   A plurality of connecting rods erected on the horizontal receiving edge of the holding receiving frame are arranged on the joint side of the guide member, and a wide retaining member can be attached to the upper portion of the connecting rod from the insertion hole of the connecting plate portion. 2. The floor joint cover device according to claim 1, wherein a connecting means for connecting one end of the cover body to a side edge of one floor by being mounted on the floor is configured.   A connecting means for connecting one end of the cover body to the side edge of one floor is configured by detachably attaching a retaining member wider than the insertion hole of the connecting plate portion to the upper portion of the guide member. The floor joint cover device according to claim 1, wherein

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