JP6813883B2 - Fixed structure of receiving frame - Google Patents

Description

The present invention has a fixing structure of a receiving frame for fixing a receiving frame for attaching a cover body covering a gap extending along between the first and second floor skeletons adjacent to each other in the horizontal direction to a side edge of the first or second floor skeleton. Regarding.

Patent Document 1 discloses an invention of a floor joint covering device that covers a gap (joint) between first and second floor skeletons that are horizontally adjacent to each other. The floor joint cover device covers the gap between the first floor skeleton that is swingably supported by the seismic isolation device on the ground and the second floor skeleton installed on the ground, and covers the first and first floor skeletons. A cover body that covers the gap between the two floor skeletons and a connecting means for connecting the side edges of the cover body on the first floor skeleton side to the first floor skeleton are provided. The connecting means are a holding frame having an L-shaped cross section fixed to a support step portion formed by recessing along a gap in the side edge of the first floor frame, and a bolt inserted from below into the horizontal receiving frame of the holding receiving frame. It is equipped with a connecting rod. An anchor rod fixed to the support step portion of the first floor skeleton is fixed to the support step portion of the first floor skeleton by welding on the opposite side of the vertical receiving frame of the holding receiving frame, and the holding frame is fixed to the support step portion of the first floor skeleton by the anchor rod. Has been done. Further, the lower side of the holding receiving frame and the side opposite to the gap portion are embedded with concrete including the portion fixed to the anchor rod. The side edge of the cover body on the first floor skeleton side is fixed to the holding receiving frame by a connecting rod while being mounted on the horizontal receiving edge of the holding receiving frame, and is fixed to the holding receiving frame from the middle portion of the cover body to the second floor skeleton side. The side edge is supported by the support step portion of the second floor skeleton so as to be movable in the width direction of the gap portion.

JP-A-2009-228348

In a floor joint cover device as in Patent Document 1, a worker fixes a holding frame to an anchor rod by welding at a construction site. For this reason, the welding strength of the holding receiving frame and the anchor rod varies depending on the technical level of the worker, and the holding receiving frame may not be firmly fixed to the anchor rod by welding. In this floor joint cover device, when an earthquake occurs and the first floor skeleton swings away from the second floor skeleton, a vehicle such as an automobile passes through the cover body from the second floor skeleton side and passes through the first floor skeleton. When passing to the side, when a vehicle such as an automobile brakes while traveling from the first floor skeleton side to the upper side of the cover body, the cover body moves from the first floor skeleton side to the second floor skeleton side. A load (force) is applied. At this time, a large load (force) that moves from the cover body to the second floor skeleton side is applied to the connecting rod and the holding receiving frame, and the fixing portion by welding between the holding receiving frame and the anchor rod provided on the first floor skeleton is also the first. 2 When a large load (force) moving to the floor skeleton side is applied and the welding strength between the holding receiving frame and the anchor rod is low as described above, the holding receiving frame may come off from the anchor rod. In this case, concrete had to be dug up and the holding frame had to be reattached to the anchor rod by welding. An object of the present invention is to make it possible to firmly fix a receiving frame on which a side edge of a cover body covering a gap is placed to a floor skeleton without depending on the technical level of a worker at a construction site. ..

In order to solve the above problems, the present invention has a first or second floor skeleton in which a receiving frame for attaching a cover body that covers a gap extending at a predetermined interval between the first and second floor skeletons adjacent to each other in the horizontal direction is attached. It is a fixing structure of the receiving frame fixed to the step portion provided on the side edge on the gap side of the floor, and extends along the step portion of the first or second floor skeleton to mount the side edge of the cover body on the horizontal plate of the receiving frame. An anchor plate fixed to the lower surface of the portion to fix the receiving frame to the step portion of the first or second floor skeleton, and the horizontal plate portion and the anchor plate are provided so as to project above the horizontal plate portion. The anchor plate is provided with a fixing rod that is fixed to fix the cover body, and the anchor plate has an extension plate portion that extends to the side opposite to the gap portion from the horizontal plate portion, and the tip portion of the extension plate portion is bent upward or downward. Provided is a structure for fixing a receiving frame, which comprises a bent plate portion and has an anchor rod fixed to a step portion of the first or second floor skeleton fixed to a side surface of the bent plate portion on the gap side. is there.

In the fixing structure of the receiving frame configured as described above, since the fixing rod for fixing the cover body is provided so as to penetrate the horizontal plate portion and the anchor plate of the receiving frame, the cover body moves to the receiving frame toward the gap side. Even if a load (force) is applied, the load (force) dissociated by the fixing rod is not applied to the horizontal plate portion of the receiving frame and the fixed portion of the anchor plate. Further, since the bent plate portion of the anchor plate is fixed to the side opposite to the gap portion side of the anchor rod, the bent plate portion is anchored even if a load (force) moving from the cover body to the receiving frame is applied to the gap portion side. Since it is only pressed against the rod side, a dissociating load (force) is not applied to the bent plate portion and the anchor rod fixed portion. As a result, even if a load (force) moving from the cover body to the receiving frame toward the gap portion is applied, the fixing portion between the receiving frame and the anchor plate and the fixing portion between the anchor plate and the anchor rod can be prevented from coming off.

In the fixed structure of the receiving frame configured as described above, an insertion hole through which the anchor rod is inserted is formed at the tip of the extension plate portion, and a gap portion of the bending plate portion is formed with the anchor rod inserted through the insertion hole. It is preferable to stick to the side surface. In this case, by inserting the anchor rod into the insertion hole of the extension plate portion of the anchor plate, the anchor rod can be positioned in contact with the bending plate portion of the anchor plate, and the anchor rod can be positioned in the bending plate portion of the anchor plate. It was possible to improve the workability of the work of fixing to the part.

It is the schematic which adopted the fixed structure of the receiving frame of this invention for the cover device for seismic isolation. It is sectional drawing of the fixed structure of the receiving frame in the orthogonal direction orthogonal to the longitudinal direction of a gap part. It is a perspective view of the receiving frame fixed to the 1st floor skeleton. It is a schematic diagram when the load moving from the cover body to the receiving frame side is applied to the gap side, and when the 1st floor skeleton separates from the 2nd floor skeleton (a), the vehicle passes through the cover body from the 2nd floor skeleton side. It is a schematic view of the case (b) when the vehicle passes through the first floor skeleton side and the vehicle applies the brake from the first floor skeleton side to the upper side of the cover body (c). It is sectional drawing corresponding to FIG. 2 when the bent plate part of an anchor plate is bent downward. It is sectional drawing corresponding to FIG. 2 when the insertion hole formed in the extension plate part of an anchor plate is abolished and the bending plate part is bent downward. It is sectional drawing corresponding to FIG. 2 when the insertion hole formed in the extension plate part of an anchor plate is abolished and the bending plate part is bent upward. FIG. 7 is a side view when viewed from the gap side (the receiving frame and the mounting step portion are shown by a two-dot chain line).

Hereinafter, an embodiment of the fixed structure of the receiving frame of the present invention will be described with reference to the embodiment adopted for the cover device for seismic isolation. As shown in FIG. 1, the seismic isolation cover device 10 covers a gap 13 extending at a predetermined interval between the first floor skeleton 11 and the second floor skeleton 12 which are horizontally adjacent to each other. A cover body 14 and a receiving frame 21 to which the cover body 14 is attached at the side edge of the first floor skeleton 11 are provided. The receiving frame 21 is fixed to the side edge of the first floor skeleton 11 by the fixing structure 20 of the receiving frame.

The first floor skeleton 11 is installed on the ground via a seismic isolation mechanism (not shown), and the first floor skeleton 11 can swing in the horizontal direction by the seismic isolation mechanism. The second floor skeleton 12 is installed on the ground at a position horizontally adjacent to the first floor skeleton 11. Gap portions 13 extending along the first and second floor skeletons 11 and 12 are provided between the first and second floor skeletons 11 and 12 at predetermined intervals, and the gap portions 13 are provided in the first floor skeleton. The width is such that even if 11 swings in the horizontal direction, it does not come into contact with the second floor skeleton 12.

A mounting step portion 11a extending along the gap portion 13 is formed on the side edge of the first floor skeleton 11 on the gap 13 side, and a receiving frame for mounting the cover body 14 to the first floor skeleton 11 is formed on the mounting step portion 11a. 21 is fixed by the fixed structure 20. Further, a support step portion 12a extending along the gap portion 13 is formed on the side edge of the second floor skeleton 12 on the gap portion 13 side, and the support step portion 12a has the side edge of the cover body 14 as the gap portion 13. It is supported so that it can be moved in the width direction.

As shown in FIGS. 2 and 3, the receiving frame fixing structure 20 fixes the receiving frame 21 to the mounting step portion 11a of the side edge of the first floor skeleton 11. The receiving frame 21 extends along the longitudinal direction of the gap 13 at the mounting step portion 11a of the first floor frame 11, and the cross-sectional shape in the direction orthogonal to the longitudinal direction of the receiving frame 21 is from the horizontal plate portion 21a and the vertical plate portion 21b. It has an L-shape that opens toward the gap 13 side. An anchor plate 22 is fixed to the lower surface of the horizontal plate portion 21a of the receiving frame 21 by welding. The anchor plates 22 are for attaching the receiving frame 21 to the first floor skeleton 11, and a plurality of anchor plates 22 are provided in the longitudinal direction of the receiving frame 21 at predetermined intervals. The anchor plate 22 has a fixing plate portion 22a fixed to the lower surface of the horizontal plate portion 21a of the receiving frame 21 and an extension extending from the fixing plate portion 22a to the side opposite to the gap portion 13 from the horizontal plate portion 21a of the receiving frame 21. It is composed of an L-shaped sheet metal member including a plate portion 22b and a bent plate portion 22c in which the tip end portion of the extending plate portion 22b is bent upward.

A through hole continuous with each other is formed in the horizontal plate portion 21a of the receiving frame 21 and the fixing plate portion 22a of the anchor plate 22, and a fixing rod 23 made of a bolt for fixing the cover body 14 is inserted into the through hole. ing. The head portion 23a of the fixing rod 23 is arranged below the fixing plate portion 22a of the anchor plate 22, and the fixing rod 23 passes through both through holes of the fixing plate portion 22a of the anchor plate 22 and the horizontal plate portion 21a of the receiving frame 21. Therefore, it projects upward from the horizontal plate portion 21a of the receiving frame 21. Further, the head portion 23a of the fixing rod 23 is fixed to the lower surface of the fixing plate portion 22a of the anchor plate 22 by welding. The welding work of the receiving frame 21, the anchor plate 22, and the fixing rod 23 is performed not at the construction site but at the factory.

An insertion hole 22d formed of a through hole is formed at the tip of the extension plate portion 22b of the anchor plate 22, and the insertion hole 22d is vertically upright and fixed to the mounting step portion 11a of the first floor skeleton 11. The anchor rod 24 is inserted. The anchor rod 24 is arranged along the side surface of the bent plate portion 22c on the gap 13 side, and the anchor rod 24 is fixed to the side surface of the bent plate 22c on the gap 13 side by welding. The receiving frame 21 is fixed by the fixed structure 20, and the lower side and the side opposite to the gap portion 13 are embedded with concrete in the mounting step portion 11a of the first floor skeleton 11. The welding work of the bent plate portion 22c of the anchor plate 22 and the anchor rod 24 is performed not at the factory but at the construction site.

Next, the operation of the cover body 14 when the first floor skeleton 11 swings due to an earthquake will be described. When the first floor skeleton 11 swings in the horizontal direction by the seismic isolation mechanism during an earthquake, the first floor skeleton 11 swings toward or away from the second floor skeleton 12. At this time, the cover body 14 moves toward or away from the second floor skeleton 12 together with the first floor skeleton 11. As shown in FIG. 4A, when the cover body 14 moves away from the second floor skeleton 12, the cover body 14 is placed on the receiving frame 21 via the fixing rod 23 from the first floor skeleton 11 side. A large load (force) P that moves to the 2 floor skeleton 12 side is applied. Further, as shown in FIG. 4 (b), when a vehicle such as an automobile passes from the second floor skeleton 12 side through the cover body 14 to the first floor skeleton 11 side, it is shown in FIG. 4 (c). As described above, when a vehicle such as an automobile applies a brake while traveling from the first floor skeleton 11 side to the upper side of the cover body 14, the cover body 14 moves from the first floor skeleton 11 side to the second floor skeleton 12 side. A large load (force) P is applied. Also at this time, a large load (force) P is applied to the receiving frame 21 so that the cover body 14 moves from the first floor skeleton 11 side to the second floor skeleton 12 side via the fixed rod 23.

As described above, the fixing structure 20 of the receiving frame is horizontal to the anchor plate 22 which is fixed to the lower surface of the horizontal plate portion 21a of the receiving frame 21 and fixed to the mounting step portion 11a of the side edge of the first floor skeleton 11. A fixing rod 23 is provided so as to project above the horizontal plate portion 21a in a state of penetrating the plate portion 21a and the anchor plate 22 to fix the cover body 14. The anchor plate 22 includes an extension plate portion 22b extending to the side opposite to the gap portion 13 from the horizontal plate portion 21a, and a bending plate portion 22c in which the tip portion of the extension plate portion 22b is bent upward. An anchor rod 24 fixed to the mounting step portion 11a of the first floor skeleton 11 was fixed to the side surface of the portion 22c on the gap 13 side.

In the fixing structure 20 of the receiving frame, since the fixing rod 23 for fixing the cover body 14 is provided so as to penetrate the horizontal plate portion 21a of the receiving frame 21 and the anchor plate 22, there is a gap between the cover body 14 and the receiving frame 21. Even if a load (force) that moves to the portion 13 side is applied, a load (force) that is dissociated by the fixing rod 23 to the fixed portion (shown by W1 in FIG. 2) between the horizontal plate portion 21a of the receiving frame 21 and the anchor plate 22. ) Will not be added. Further, since the bent plate portion 22c of the anchor plate 22 is fixed to the side opposite to the gap portion 13 side of the anchor rod 24, a load (force) that moves from the cover body 14 to the receiving frame 21 toward the gap portion 13 side is applied. However, since the bent plate portion 22c is only pressed against the anchor rod 24 side, a dissociating load is applied to the fixed portion (shown in W2 of FIG. 2) between the bent plate portion 22c of the anchor plate 22 and the anchor rod 24. Will not join. As a result, even if a load (force) that moves from the cover body 14 to the receiving frame 21 toward the gap portion 13 is applied, the fixing portion W1 of the receiving frame 21 and the anchor plate 22 and the fixing portion W2 of the anchor plate 22 and the anchor rod 24 are dissociated. I was able to avoid it. As described above, the fixing structure 20 of the receiving frame makes it possible to firmly fix the receiving frame 21 to the first floor skeleton 11 without being influenced by the technical level of the workers at the construction site.

Further, when the insertion hole 22d is formed in the extension plate portion 22b without forming the bending plate portion 22c at the tip portion of the extension plate portion 22b, in order to maintain the strength around the insertion hole 22d, the strength is maintained. The insertion hole 22d must be formed on the gap 13 side of the extending plate portion 22b. In this case, the extension plate portion 22b must be extended longer than necessary to the side opposite to the gap portion 13 side, the width of the mounting step portion 11a becomes wider, and the building of the first floor skeleton 11 is gapped. It cannot be built close to part 13. In this embodiment, an insertion hole 22d through which the anchor rod 24 is inserted is formed at the tip of the extension plate portion 22b, and the gap portion 13 side of the bending plate portion 22c is formed with the anchor rod 24 inserted through the insertion hole 22d. Sticked to the side of. In this way, even if the insertion hole 22d is formed at the tip of the extension plate portion 22b, the anchor rod 24 inserted through the insertion hole 22d can be received by the bending plate portion 22c, so that the width of the mounting step portion 11a can be increased. It was possible to prevent a load from being generated around the insertion hole 22d of the extension plate portion 22b without making it wider than necessary. Further, by inserting the anchor rod 24 into the insertion hole 22d of the extension plate portion 22b of the anchor plate 22, the anchor rod 24 can be positioned in contact with the bending plate portion 22c of the anchor plate 22, and the anchor rod can be positioned. The workability of the work of fixing the 24 to the bent plate portion 22c of the anchor plate 22 could be improved.

In the fixed structure 20 of the receiving frame of this embodiment, the bent plate portion 22c of the anchor plate 22 is bent upward, but the present invention is not limited to this, and as shown in FIG. The bent plate portion 22c of the anchor plate 22 may be bent downward.

In the fixing structure 20 of the receiving frame of this embodiment, an insertion hole 22d is formed at the tip of the extension plate portion 22b of the anchor plate 22, and the anchor rod 24 is inserted through the insertion hole 22d. Not limited to this, as shown in FIG. 6, the anchor rod 24 can be attached to the extension plate portion 22b of the anchor plate 22 without forming an insertion hole 22d at the tip end portion of the extension plate portion 22b of the anchor plate 22. It may be fixed to the side surface of the bent plate portion 22c bent downward to the tip portion on the gap 13 side by welding. In this case, since the length of the extension plate portion 22b can be shortened, the width of the mounting step portion 11a can be further narrowed.

Further, when the insertion hole 22d is not formed at the tip of the extension plate portion 22b of the anchor plate 22, the anchor rod 24 is bent into an L shape upside down as shown in FIGS. 7 and 8. The anchor plate 22 may be fixed to the tip end portion of the extension plate portion 22b by welding to the side surface of the bending plate portion 22c bent upward on the gap portion 13 side.

The receiving frame fixing structure 20 of the above embodiment fixes the receiving frame 21 to the first floor skeleton 11, but the present invention is not limited to this, and the receiving frame 21 is fixed to the second floor skeleton 12. It may be a thing.

The fixed structure 20 of the receiving frame of the above embodiment is applied to the first floor skeleton 11 of the seismic isolation cover device 10 in which the first floor skeleton 11 can swing in the horizontal direction. However, both the first floor skeleton and the second floor skeleton may be fixed to the ground.

11 ... 1st floor skeleton, 12 ... 2nd floor skeleton, 13 ... gap, 14 ... cover body, 20 ... fixed structure of receiving frame, 21 ... receiving frame, 21a ... horizontal plate part, 22 ... anchor plate, 22b ... extension Plate part, 22c ... Bending plate part, 22d ... Insertion hole, 23 ... Fixed rod, 24 ... Anchor rod.

Claims (2)

A receiving frame for attaching a cover body covering a gap extending at a predetermined interval between the first and second floor skeletons adjacent to each other in the horizontal direction is provided on the side edge of the first or second floor skeleton on the gap side. It is a fixed structure of the receiving frame that is fixed to the provided step .
The receiving frame is fixed to the lower surface of the horizontal plate portion of the receiving frame that extends along the step portion of the first or second floor skeleton and mounts the side edge of the cover body, and the receiving frame is attached to the first or second floor. An anchor plate for fixing to the step portion of the skeleton and a fixing rod provided so as to project above the horizontal plate portion while penetrating the horizontal plate portion and the anchor plate to fix the cover body. Prepare,
The anchor plate includes an extension plate portion extending to the side opposite to the gap portion from the horizontal plate portion, and a bending plate portion in which the tip end portion of the extension plate portion is bent upward or downward. A fixing structure of a receiving frame, characterized in that an anchor rod fixed to the step portion of the first or second floor skeleton is fixed to a side surface of the bent plate portion on the gap side. In the fixed structure of the receiving frame according to claim 1,
An insertion hole through which the anchor rod is inserted is formed at the tip of the extension plate portion, and the anchor rod is fixed to the side surface of the bending plate portion on the gap side in a state of being inserted through the insertion hole. The fixed structure of the receiving frame is characterized by.

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