JP7254628B2 - Floor panel transportation method, hanging bracket and floor panel fixing method - Google Patents

Description

The present invention relates to a floor panel transporting method, a suspension fitting used in the floor panel transporting method, and a floor panel fixing method.

Conventionally, a floor panel is known in which both ends in the longitudinal direction are fixed to floor beams using bolts (see, for example, Patent Document 1). In this prior art, a stud bolt fixed to the floor beam is inserted into a through hole of the floor panel, and a nut is fastened to the stud bolt to fix the floor panel to the floor beam.
Also, a lifting jig for lifting and transporting such a floor panel is known (see, for example, Patent Document 2). In this conventional technique, a jig is used to rotatably connect a pair of rod-shaped members, and a floor panel is lifted up by gripping means at the ends of the rod-shaped members while holding the sides of the floor panel.

JP 2009-102832 A JP-A-8-259170

By the way, when a floor panel is transported over the floor beams of a building at a construction site, it is common to tie the floor panel with a wire or the like, lift it up with a lifting device, and transport it. In this case, since a gap is necessary for removing the string hung on the floor panel, the position is shifted from the predetermined installation position (for example, the position where the stud bolt is inserted into the bolt insertion hole as described in Patent Document 1). It will be placed temporarily.
Therefore, in addition to the work of attaching and detaching the string, it takes time and effort to move the floor panel from the temporary placement position to the predetermined installation area, resulting in an increase in construction period and cost.

Even when the lifting jig described in Patent Document 2 is used, when lowering the floor panel, it is necessary to have a space between adjacent floor panels to insert a gripping means, and the same installation as above is required. You can't just put it down where it should be. Therefore, similarly to the above, it takes time and effort to move the floor panel from the temporary placement position to the predetermined installation area, which causes an increase in construction period and cost.

The present disclosure has been made by focusing on the conventional problems described above, and includes a floor panel transportation method, a suspension fitting, and a floor panel fixing that can reduce the labor of transportation work of floor panels, and reduce the construction period and cost. We aim to provide a method.

In order to achieve the above object, a floor panel transporting method of the present disclosure is a floor panel transporting method for transporting a floor panel across a pair of floor beams of a building by means of a lifting device, wherein the floor panel is placed on the floor beams. a bolt penetrating step of penetrating a threaded portion of a bolt through a bolt through hole formed in the vicinity of an end of the floor panel, with a head side member larger than the bolt through hole facing upward; A nut-side member larger than the bolt through-hole is engaged with the threaded portion projecting downward from the floor panel, and the nut-side member is positioned such that the bolt is regulated by the nut-side member. a nut mounting step in which a gap of a predetermined distance can be formed between the head-side member and the floor panel when the above-mentioned head-side member and the floor panel are mounted; a step of attaching a suspension fitting to engage the bolt with the bolt; a step of attaching a suspension fitting of the lifting device to the suspension fitting; a floor panel transporting step of transporting the floor panel so as to be bridged over the floor panel; and a hanging metal fitting removing step of removing the hanging metal fitting from the gap.

Further, the suspension fitting of the present disclosure includes a bolt engaging piece that engages with the bolt, and the bolt at an angle that allows the bolt to stand up from the surface of the floor panel when the bolt engaging piece is inserted into the gap. a hanging piece provided integrally with the engaging piece and capable of being engaged with the sling, wherein the bolt engaging piece extends from the end on the hanging piece side to the central portion of the bolt engaging piece. and a threaded portion insertion hole having a width through which the threaded portion can be inserted but not the head side member, and the hanging piece has the threaded portion insertion hole at the end on the side of the bolt engaging piece. and a head insertion hole opened so that the head side member can be inserted in a direction along the threaded portion insertion hole;

In addition, the floor panel fixing method of the present disclosure includes a bolt having a screw portion passed through a bolt through hole of the floor panel with the head facing up, and the floor panel. and a fixing member attached to the screw portion positioned below the floor panel fixing method for fixing the floor panel to the floor beam using When the floor panel is bridged over the floor beam, the fixing member is formed at a position in the horizontal direction that does not overlap with the floor beam when the floor panel is bridged over the floor beam. It is mounted movably between a non-engagement position in which it is not engaged in the vertical direction and an engagement position in which it is engaged in the vertical direction. Then, a bolt piercing step of piercing the threaded portion of the bolt with the head upward and the threaded portion piercing the floor panel and protruding downward, and the fixing member is attached to the threaded portion. Then, a nut mounting step of mounting a nut on the threaded portion of the fixing member from below and further arranging the fixing member in the non-engaging position; a transporting step of transporting to a predetermined installation position, moving the fixing member to the engaging position, and further tightening the nut to sandwich the fastened portion of the floor beam between the fixing member and the floor panel. a fixing step of fixing the floor panel to the floor joist in a free state, and the floor panel carrying method described above is used from the bolt passing step to the carrying step .

According to the floor panel transport method of the present disclosure, it is possible to reduce labor for the floor panel transport work, and reduce the construction period and cost.
Also, the suspension hardware of the present disclosure enables implementation of the floor panel transportation method.
Furthermore, the floor panel fixing method of the present disclosure makes it possible to easily fix the floor panel spanned over the pair of floor joists, thereby reducing the construction period and cost.

1 is a perspective view showing a floor FL of a building 1 to which the floor panel transporting method, hanging bracket, and floor panel fixing method of Embodiment 1 are applied; FIG. FIG. 4 is a cross-sectional view showing a main part of the floor panel 20 used in the floor panel carrying method and the floor panel fixing method of Embodiment 1, and showing a state in which bolts 30 are pulled up after execution of the nut-side member fastening step. FIG. 4 is a perspective view showing a suspension metal fitting 50 used in the floor panel carrying method of Embodiment 1; FIG. 4 is an explanatory diagram of a step of installing a hanging metal fitting in the floor panel transportation method of Embodiment 1; FIG. 10 is an explanatory diagram of a sling hooking step in the floor panel transportation method of Embodiment 1; FIG. 10 is an explanatory view of the lifting of the floor panel transporting step in the floor panel transporting method and the floor panel fixing method of Embodiment 1; FIG. 10 is an explanatory diagram of the floor panel transporting step in the floor panel transporting method and the floor panel fixing method of Embodiment 1 when the floor panel is installed; FIG. 4 is an explanatory diagram of a step of removing the suspension metal fitting in the floor panel transporting method and the floor panel fixing method of Embodiment 1; FIG. 5 is an explanatory diagram of a fixing step of fixing the floor panel transported by the floor panel transporting method of Embodiment 1 by the floor panel fixing method of Embodiment 1;

Hereinafter, an embodiment for realizing a floor panel carrying method, a suspension metal fitting, and a floor panel fixing method according to the present disclosure will be described based on the drawings.
The floor panel transporting method and the floor panel fixing method of Embodiment 1 are used for transporting the floor panel 20 forming the floor FL of the steel frame building 1 shown in FIG.

The floor panel 20 is installed while being bridged over the floor beams 12 , 12 of the building 1 . Channel steel or the like can be used as the floor beam 12, and in the first embodiment, H-shaped steel having an upper flange 12a and a lower flange 12b is used.

(Description of floor panel fixing structure)
Next, a structure for fixing the floor panel 20 to the floor beam 12 will be described.
As shown in FIG. 1, the floor panel 20 is formed in a rectangular plate shape having a length that can be bridged over the floor beams 12, 12. A plurality of floor panels 20 are arranged in parallel in a direction along the floor beams 12 to form the floor FL. It is formed. In the floor panel 20, bolt through-holes 21 for vertically penetrating the screw portions 33 of the bolts 30 shown in FIG. The material of the floor panel 20 is not particularly limited, and known materials such as precast concrete panels and wooden panels can be used. In Embodiment 1, a lightweight cellular concrete panel (ALC panel) is used as the floor panel 20 .

The bolt through-holes 21 are arranged in the longitudinal direction of the floor panel 20 so as to be located inside the upper flanges 12a of the floor beams 12 when spanning the floor beams 12 , 12 . In addition, it is arranged in the center of the floor panel 20 in the width direction perpendicular to the longitudinal direction of the floor panel 20 (see FIG. 1). Further, at the upper end of the bolt through-hole 21, a recessed counterbore 22 capable of accommodating a head 31 of a bolt 30 and a washer 32, which will be described later, is formed. That is, the counterbore 22 is formed to have a depth larger than the sum of the vertical dimensions of the head 31 of the bolt 30 and the washer 32, and a diameter larger than the diameter of the washer 32. there is

The floor panel 20 is fixed to the floor joists 12 by bolts 30 provided at both ends in the longitudinal direction, and fixing plates 40 and nuts 34 supported by the lower ends of the bolts 30 .
The bolt 30 has a disk-shaped washer 32 integrally provided under a polygonal head 31 such as a hexagon, and a nut 34 is engaged with a threaded portion 33 .

The fixing plate 40 is formed of a metal plate material, and is formed in a two-stepped shape by a base portion 41 and an engaging piece portion 42 positioned below the base portion 41 . A bolt insertion hole 41 a through which the threaded portion 33 of the bolt 30 is inserted is formed in the base portion 41 . That is, as shown in FIG. 2, the base 41 is attached to the threaded portion 33 of the bolt 30 above the nut 34 so as to be axially movable and rotatable. Further, the base portion 41 is formed in a size that does not interfere with the upper flange 12a of the floor beam 12 in the vertical direction when it is attached to the screw portion 33 .

The engagement piece portion 42 extends radially from the base portion 41, and in a state in which the base portion 41 is in contact with the back surface of the floor panel 20, the step (base portion 41) and radial length are set. That is, by rotating the base portion 41 with respect to the screw portion 33, the fixing plate 40 is vertically aligned with the floor beam 12 when the floor panel 20 is bridged over the floor beam 12 as shown in FIGS. 4D and 4E. It is mounted movably between a non-engaging position where it does not engage and an engaging position where it engages in the vertical direction as shown in FIG. 4F. A nut 34 is engaged with the lower side of the base portion 41 of the fixing plate 40 , and the fixing plate 40 moves along the screw portion 33 as the nut 34 is tightened.

When fixing the floor panel 20 to the floor beam 12, the head 31 and the washer 32 of the bolt 30 are accommodated in the counterbore 22 as shown in FIG. 4E. Then, as shown in FIG. 4F, the engaging piece 42 of the fixing plate 40 is positioned below the upper flange 12a of the floor joist 12, and the nut 34 is tightened so that the upper flange 12a is attached to the floor. The floor panel 20 can be fixed to the floor beam 12 by sandwiching it between the panel 20 and the engaging piece 42 .

(Description of suspension bracket)
Next, the hanging metal fittings 50 used when lifting and transporting the floor panel 20 will be described.
The suspension metal fitting 50 is formed of a metal plate material, and as shown in FIG. That is, when the bolt engaging piece 51 is positioned horizontally, the hanging piece 52 is formed in a shape that rises obliquely.

The bolt engaging piece 51 is formed with a threaded portion insertion hole 51a. The threaded portion insertion hole 51a has an opening at the edge on the hanging piece 52 side, and extends from this opening to the center position of the bolt engaging piece 51. As shown in FIG. The threaded portion insertion hole 51 a is formed to have a width that allows the threaded portion 33 of the bolt 30 to be inserted thereinto, but is smaller than the diameters of the head portion 31 and the washer 32 .

The hanging piece 52 is formed with a head insertion hole 52a and a locking hole 52b. The head insertion hole 52a is formed continuously with the threaded portion insertion hole 51a at the edge portion continuous with the bolt engaging piece 51, and has a rectangular shape that allows the head 31 of the bolt 30 and the washer 32 to be inserted therethrough. Opened in shape. The locking hole 52b is circularly opened at a position slightly away from the bolt engaging piece 51 from the center of the hanging piece 52. As shown in FIG.

(Floor panel transportation method)
Next, a procedure for transporting the floor panel 20 and fixing it across the floor beams 12, 12 of the building 1 will be described. As this transportation, the case where the floor panel 20 is loaded on a truck, transported to a construction site, and transported from the truck onto the floor beams 12, 12 installed in the building 1 will be exemplified.

<Bolt penetration step and nut attachment step>
First, the bolt 30 and the fixing plate 40 are attached to the floor panel 20 loaded on the truck. In this case, the head 31 and the washer 32 of the bolt 30 are placed upward, and the threaded portion 33 is passed through the bolt through hole 21 of the floor panel 20 from above as shown in FIG. 2 (bolt through step).

Next, the fixing plate 40 is attached to the screw portion 33 . That is, the screw portion 33 projecting from the lower end of the bolt through hole 21 is inserted into the bolt through hole 41 a of the base portion 41 . Further, a nut 34 is fitted under the fixing plate 40 from the distal end side of the threaded portion 33 (nut mounting step).
The mounting position of this nut 34 is such that when the bolt 30 is pulled up from the floor panel 20 and the fixing plate 40 is brought into contact with the rear surface of the floor panel 20, the hanging metal fitting 50 is positioned between the washer 32 and the surface 20a of the floor panel 20. is positioned to form a gap SP into which the bolt engaging piece 51 can be inserted.

<Suspension bracket mounting step>
Next, the suspension fitting 50 is attached to the bolt 30 . In this case, as shown in FIG. 4A, the bolt engagement piece 51 of the suspension metal fitting 50 is moved from the longitudinal end side of the floor panel 20 along the surface 20a in the direction of the dashed-dotted arrow. Then, the head 31 and the washer 32 of the bolt 30 are passed through the head insertion hole 52a, and the threaded portion 33 is moved to the deepest position of the threaded portion insertion hole 51a. Thereby, as shown in FIG. 4B, the bolt engaging piece 51 engages with the washer 32 in the vertical direction and engages with the screw portion 33 in the horizontal direction. Further, at this time, as shown in FIG. 2, the fixing plate 40 is placed in the non-engaging position in which the engaging piece 42 faces the center of the floor panel 20 in the longitudinal direction.

<Hanging tool hanging step and floor panel transporting step>
When transporting the floor panel 20 to the building 1, first, as shown in FIG. 100 is hooked (hanging step). Although not shown, a hook or the like that can be locked in the locking hole 52b is provided at the tip of the hanger 100. As shown in FIG. In this case, the sling 100 is simply hooked to the locking hole 52b, which is easier than stringing the floor panel 20 with a wire or the like, and the work time can be shortened. can.

Next, the center of the cord-like portion 101 of the hanging device 100 is lifted by a lifting device (not shown) and moved, and the floor panel 20 is hung on the pair of floor beams 12, 12 of the building 1 as shown in FIG. hand over. When the floor panel 20 is lifted, the suspension fitting 50 is pulled toward the center of the floor panel 20, so the threaded portion 33 of the bolt 30 is maintained at the deepest position in the threaded portion insertion hole 51a. The lower fitting 50 is less likely to drop off from the bolt 30. - 特許庁

Since the floor panel 20 is not tied with strings, the floor panel 20 can be directly arranged at a predetermined installation position of the floor beam 12.例文帳に追加At this time, since the fixing plate 40 is arranged at the non-engaging position, the floor panel 20 can be hung over the floor beams 12 without interfering with the upper flanges 12a of the floor beams 12, as shown in FIG. 4D. can pass.

<Suspension bracket removal step>
After the floor panel 20 is laid over the floor joists 12, 12 and arranged at a predetermined installation position, the suspension fixture 100 is removed from the suspension fixture 50.例文帳に追加Then, after removing the hanging tool 100 from the hanging metal fitting 50 , the hanging metal fitting 50 is removed from the bolt 30 . In this case, by pulling the hanging metal fitting 50 in the direction of the arrow M, the threaded portion 33 moves along the threaded portion insertion hole 51a, the head portion 31 and the washer 32 pass through the head portion insertion hole 52a, The suspension metal fitting 50 can be removed from the engagement state with the bolt 30 .

Then, after the suspension fitting 50 is removed from the bolt 30, the bolt 30 moves downward with respect to the floor panel 20 due to its own weight. As a result, the head 31 and washer 32 are accommodated in the counterbore 22, and the fixing plate 40 is lowered to a position lower than the upper flange 12a of the floor beam 12, as shown in FIG. 4E.

<Floor panel fixing step>
Next, the work of fixing the floor panel 20 to the floor beam 12 is performed. In this case, first, the fixing plate 40 is rotated around the bolt 30 to move the engagement piece 42 to the engagement position arranged below the upper flange 12 a of the floor beam 12 .

Next, by rotating the nut 34 in the tightening direction and narrowing the distance between the nut 34 and the head 31 , the engaging piece 42 of the fixing plate 40 contacts the lower surface of the upper flange 12 a of the floor beam 12 . When the nuts 34 are further tightened, the upper flanges 12a of the floor beams 12 are sandwiched between the rear surface of the floor panel 20 and the engaging pieces 42, and the vertical movement of the floor panel 20 is restricted and fixed. be. Also, the base portion 41 of the fixing plate 40 is arranged close to the upper flange 12 a to restrict the longitudinal movement of the floor panel 20 with respect to the floor beams 12 .

(Action of Embodiment 1)
Before describing the operation of the first embodiment, first, a comparative example and its problems will be described.
A so-called slinging operation is performed when the floor panel 20, which has no place to directly hook the hook, is transported from the bed of a truck (not shown) to the building 1.例文帳に追加Specifically, first, a wire or nylon sling for hooking is used for stringing on the loading platform. Then, a hook of a lifting device such as a crane is hooked on the string hooking portion to transport the item to the building 1. - 特許庁

For example, when the floor panel 20 is hung over the floor beams 12, 12 of the floor FL of the building 1 by this transportation, it is necessary to perform stringing at a position where the floor panel 20 can be hung horizontally. requires experience and time. Furthermore, since it is necessary to remove wires, nylon slings, and the like from the floor panel 20 after transportation, the installation position is different from the desired installation position. , temporarily placed. Then, after the wires are removed, the heavy floor panel 20 is moved to the regular installation position by using human power or tools.

As described above, it is necessary to perform the work of attaching a wire or the like to the floor panel 20, the work of removing it, and the work of moving the floor panel 20 from the temporary placement position to the regular installation position. Unloaders on the building side also have long waiting times and work efficiency is poor. This leads to an increase in construction period and cost. In particular, in the case of forming the floor FL of the second floor or higher, tools and work for ensuring safety are required when moving to the regular installation position.

On the other hand, in the floor panel transportation method of Embodiment 1, the hanging metal fittings 50 are attached using the bolts 30 for fixing the floor panel 20 to the floor beams 12, and the hanging metal fittings 50 can be hooked. can. Then, the suspension fitting 50 is attached only by moving it along the surface 20 a of the floor panel 20 . For this reason, compared with the case of performing the stringing work, the work takes less time, and the work time of the unloading person on the truck bed can be shortened.

In addition, since the hanging metal fittings 50 can be attached and detached by moving them along the longitudinal direction of the floor panel 20, a working space is created between the adjacent floor panels 20 when the floor panel 20 is transported. The floor panel 20 can be transported directly to its proper position without the need to provide it. This eliminates the need to move the floor panel 20 from the temporary placement position to the normal position. Moreover, the removal of the hanging metal fitting 50 can be performed in a short time as compared with the case of removing a wire or the like.

Furthermore, the use of the suspension metal fittings 50 makes it possible to easily carry out the floor panel transportation method of the first embodiment. That is, since the bolt engaging piece 51 has the threaded portion insertion hole 51a formed from the end on the hanging piece 52 side, when the floor panel 20 is lifted after the hanging metal fitting 50 is engaged with the bolt 30, The lifting force acts to arrange the threaded portion 33 on the far side of the threaded portion insertion hole 51a. Therefore, the suspending metal fitting 50 is less likely to drop off from the bolt 30, resulting in excellent workability.

Moreover, the hanging metal fitting 50 is provided integrally with the bolt engaging piece 51 so that the hanging piece 52 rises. Therefore, in a state in which the bolt engaging piece 51 is engaged with the bolt 30, the suspending member 100 can be easily engaged with the hanging piece 52, resulting in excellent workability. Moreover, since the suspending metal fitting 50 is formed of the bolt engaging piece 51 and the suspending piece 52, it can be formed from a single metal plate, which is excellent in manufacturability. That is, when a metal hook or the like is used as the lockable bolt locking portion of the sling 100, a welding operation or the like is required to integrally provide such a hook with the bolt engaging piece 51, which makes manufacturing difficult. It takes time.

Furthermore, since the head insertion hole 52a is formed in the hanging piece 52 of the hanging metal fitting 50, the hanging metal fitting 50 can be engaged with the bolt 30 simply by sliding the hanging metal fitting 50 along the floor panel 20. and workability is excellent.

Further, the bolts 30 for fixing the floor panel 20 to the floor beams 12 are attached to the floor panel 20 in advance before transportation, and when the floor panel 20 is fixed to the floor beams 12, the fixing plate 40 is not engaged. After moving from the engagement position to the engagement position, the operation is simply to fasten the nut 34 . Therefore, the work time for fixing the floor panel 20 can be shortened.

(Effect of Embodiment)
Below, the effect of the floor panel carrying method and the suspension metal fitting 50 of this Embodiment 1 is enumerated.
(1) The floor panel transporting method of Embodiment 1 is a floor panel transporting method for transporting the floor panel 20 so as to bridge the pair of floor beams 12, 12 of the building 1, and includes the following steps.
A bolt 30 is inserted into a bolt through hole 21 formed in the vicinity of the end of a floor panel 20 placed on a floor beam 12 with a head 31 as a head side member larger than the bolt through hole 21 and a washer 32 facing upward. A bolt penetrating step for penetrating the screw portion 33 of.
A nut 34 and a fixing plate 40 as a nut-side member larger than the bolt through-hole 21 are engaged with the threaded portion 33 protruding downward from the floor panel 20 from the bolt through-hole 21. Further, the positions of the nut 34 and the fixing plate 40 are set. is a position where a gap SP of a predetermined interval can be formed between the head 31 and the washer 32 and the floor panel 20 when the bolt 30 is pulled up until it is regulated by the nut 34 and the fixing plate 40. Nut mounting step.
a suspension fitting mounting step of inserting the suspension fitting 50 into the gap SP and engaging the suspension fitting 50 with the bolt 30;
A hanging tool hanging step for hanging the hanging tool 100 of the lifting device on the hanging metal fitting 50 .
A floor panel conveying step of conveying the floor panel 20 so as to bridge the pair of floor beams 12, 12 by a lifting device.
A hanging metal fitting removal step for removing the hanging metal fitting 50 from the gap SP.

Therefore, the suspending metal fitting 50 as a place to hang the suspending tool 100 can be arranged on the floor panel 20, and the operation thereof can be performed only by engaging the bolt 30. As shown in FIG. Therefore, as compared with the case where the floor panel 20 is tied with a wire or the like, the labor and time required for the work can be reduced. In particular, when slinging is performed with a wire or the like, it is necessary to hang the wire at a position where the floor panel 20 can be hung horizontally and in a well-balanced manner. can be omitted.
Further, when the floor panel 20 is transported to a position where it is hung over the floor beams 12, 12, a space for work such as untying the string is secured between the adjacent floor panels 20. - 特許庁It is not necessary and can be transported to the desired installation location. Therefore, the work of temporarily placing the floor panel 20 and the work of moving the floor panel 20 from the temporary placing position to the regular installation position are not required, and the labor and time required for the work can be reduced accordingly. In addition, the floor panel 20 can be transported using the bolts 30 for fixing the floor panel 20, and the number of parts can be reduced and the cost can be reduced compared to the case where bolts dedicated for transportation are used. Moreover, the time for subsequent fixing work can be shortened.

(2) In the floor panel transportation method of the first embodiment, the hanging metal fitting 50 includes a bolt engaging piece 51 that is inserted into the gap SP and engaged with the bolt 30, and the bolt engaging piece 51 is provided integrally with the hanging metal fitting. and a hanging piece 52 as a sling engaging portion that engages the bolt 100. Further, the bolt engaging piece 51 is capable of inserting the screw portion 33 from one end of the bolt engaging piece 51 toward the center. On the other hand, a threaded portion insertion hole 51a having a width that does not allow the head 31 and the washer 32 to be inserted is provided. Then, in the hanging fitting mounting step, the bolt engagement piece 51 is engaged with the bolt 30 by inserting the screw portion 33 into the screw portion insertion hole 51a while inserting the bolt engagement piece 51 into the gap SP. In the hoisting tool hanging step, the hoisting tool 100 is engaged with the locking holes 52b of the hanging pieces 52 of the pair of hanging metal fittings 50 engaged with the bolts 30 at both ends of the floor panel 20 and lifted.
Therefore, it is possible to easily hang the hanger 100 on the bolt 30 provided on the floor panel 20 . Moreover, when the sling 100 is hoisted, the sling fittings 50, 50 are pulled toward the center of the floor panel 20, and the threaded portion 33 of the bolt 30 is arranged on the far side of the threaded portion insertion hole 51a, thereby allowing the sling to be lifted. The engagement between the lower metal fitting 50 and the bolt 30 is less likely to come off, resulting in excellent workability.

(3) In the floor panel transportation method of Embodiment 1, the upper end of the bolt through-hole 21 has a counterbore as a recess capable of accommodating the head 31 and the washer 32 below the surface 20a of the floor panel 20. 22. Then, in the hanging metal fitting removing step, after removing the hanging metal fitting 50 , the head 31 and the washer 32 are housed in the counterbore 22 .
Therefore, the head 31 and the washer 32, which were arranged above the surface 20a of the floor panel 20 together with the suspension fitting 50 during transportation of the floor panel 20, are removed from the counterbore 22 after the transportation of the floor panel 20. can be housed in the floor panel 20 and not exposed to the surface 20a of the floor panel 20. - 特許庁Therefore, it is easier to prevent the head 31 and the washer 32 from appearing in the appearance, compared to the case where the head 31 and the washer 32 remain arranged above the surface 20a of the floor panel 20. Yes, it is possible to reduce the effort and cost to prevent it from appearing on the outside.
Moreover, when the head 31 and the washer 32 are arranged in advance below the surface 20a of the floor panel 20, it is necessary to form the recess itself to a size capable of accommodating the hanging metal fitting 50. The member that hides the is also increased in size, resulting in an increase in cost, and there is a possibility that the quality of appearance may be deteriorated. On the other hand, in the first embodiment, since the head 31 and the washer 32 are accommodated in the counterbore 22 after the floor panel 20 is transported, the size of the counterbore 22 as a recess is kept small, resulting in an increase in cost and appearance. Quality deterioration can be suppressed.

(4) In the floor panel carrying method of Embodiment 1, the nut-side member is provided with a nut 34 that engages with the threaded portion 33, a nut 34 that is disposed above the nut 34, and is provided so as to be movable along the threaded portion 33. As a fixing member movably mounted between a non-engagement position where the panel 20 is not engaged with the floor beams 12 in the vertical direction when the panel 20 is stretched over the floor beams 12, and an engagement position where the panel is engaged with the floor beams 12 in the vertical direction. and a fixing plate 40 of. Then, in the transporting step, the fixing plate 40 is placed in the non-engaging position.
Therefore, even if the bolts 30 used for fixing the floor panel 20 are attached to the floor panel 20 and the floor panel 20 is stretched over the floor beams 12, 12, the bolts 30 do not interfere with the floor beams 12, 12. can be transported without

(5) The hanging metal fitting 50 of the first embodiment has a bolt engaging piece 51 to be engaged with the bolt 30, and a state in which the bolt engaging piece 51 is inserted into the gap SP and rises from the surface 20a of the floor panel 20. and a suspension piece 52 which is provided integrally with the bolt engagement piece 51 at an angle and is capable of engaging the sling 100 . The bolt engaging piece 51 has a width through which the threaded portion 33 can be inserted from the end on the hanging piece 52 side to the central portion of the bolt engaging piece 51, but the head 31 and the washer 32 cannot be inserted. It has an insertion hole 51a. Also, the hanging piece 52 is formed continuously with the threaded portion insertion hole 51a at the end on the bolt engagement piece 51 side, so that the head 31 and the washer 32 can be inserted in the direction along the threaded portion insertion hole 51a. It is provided with an open head insertion hole 52a and a locking hole 52b as a locking portion capable of locking the sling 100 .
Therefore, it is possible to smoothly carry out the floor panel transportation method described above.

(6) The floor panel fixing method of Embodiment 1 is to attach the floor panel 20 spanning the pair of floor beams 12, 12 to the bolt through-holes 21 of the floor panel 20, and the head 31 and the washer as head-side members. The floor beams 12, 12 are installed by using a bolt 30 having a threaded portion 33 passed therethrough with the 32 upward, and a fixing plate 40 as a fixing member positioned below the floor panel 20 and attached to the threaded portion 33. It is a floor panel fixing method to be fixed to. Furthermore, the bolt through hole 21 is formed at a position where the horizontal position does not overlap with the floor beam 12 when the floor panel 20 is bridged over the floor beams 12, 12, and the fixing plate 40 is attached to the screw portion 33 by When the floor panel 20 is bridged over the floor beams 12, 12, it is mounted movably between a non-engaging position where it does not engage with the floor beam 12 in the vertical direction and an engaging position where it engages in the vertical direction.
Then, the floor panel fixing method performs the following steps.
A bolt penetrating step for penetrating the screw portion 33 of the bolt 30 into the bolt penetrating hole 21 with the head portion 31 and the washer 32 as a head-side member facing upward.
After attaching the fixing plate 40 to the threaded portion 33 protruding downward through the floor panel 20, the nut 34 is attached to the threaded portion 33 from below the fixing plate 40, and the fixing plate 40 is disengaged. Nut mounting step to place in position.
A transporting step of transporting the floor panel 20 to a predetermined installation position across the pair of floor beams 12 , 12 .
The fixing plate 40 is moved to the engagement position, and the nuts 34 are tightened to sandwich the upper flange 12a of the floor joist 12 between the fixing plate 40 and the floor panel 20. Fixing step for fixing to the beam 12 .
Therefore, even if the bolts 30 for fixing the floor beams 12 to the floor panel 20 are attached in advance, the floor panel 20 can be bridged over the floor beams 12, 12 without causing the bolts 30 to interfere with the floor beams 12, 12. can. Therefore, compared with the case where the bolts 30 are attached after the floor panel 20 is transported, the fixing work can be simplified, and the construction period and cost can be reduced.

(7) In the floor panel fixing method of Embodiment 1, the floor panel conveying method according to any one of the above (1) to (4) is used from the bolt penetration step to the conveying step.
Therefore, the bolts 30 used for fixing the floor panel 20 can be used for transportation, and compared with the case where the bolts for fixing are used, the number of parts can be reduced, the cost can be reduced, and the work time can be reduced. can be shortened.

(8) The floor structure of Embodiment 1 is a floor structure in which the floor panel 20 is fixed to the floor beams 12, and the floor panel 20 spanned over the pair of floor beams 12, 12, , 12, a bolt 30 passing through the floor panel 20 with the head 31 up, a fixing plate 40 attached to the threaded portion 33 of the bolt 30 at a position below the floor panel 20, and the bottom of the fixing plate 40. a nut 34 fastened to the threaded portion 33 at the side thereof. The fixing plate 40 includes a base portion 41 through which the threaded portion 33 is inserted and which abuts or is close to the upper flange 12a of the floor beam 12 in the horizontal direction. and an engaging piece 42 that contacts the lower surface of the upper flange 12a.
Therefore, the floor panel 20 transported using the above-described floor panel transport method can be fixed to the floor beams 12 .

So far, the floor panel carrying method, the suspension fitting, and the floor panel fixing method of the present disclosure have been described based on the embodiments. However, the specific configurations of the floor panel transporting method, suspension fittings, and floor panel fixing method of the present disclosure are not limited to these embodiments, and deviate from the gist of each claim. Unless otherwise specified, combinations of the embodiments, design changes and additions, etc. are permitted.

For example, in the embodiment, an example in which the floor panel transporting method, the suspension fitting, and the floor panel fixing method are applied to the steel-framed building 1 is shown. However, this method of transporting floor panels is applicable to conventionally constructed buildings and unit buildings as long as the floor panels are laid over the floor beams.

In addition, in the embodiment, as the head-side member of the bolt 30, the head 31 and the washer 32 are coupled together, but the present invention is not limited to this. For example, the washer 32 may be separate from the head 31 . Also, similar to the washer 32, a shape different from that of the washer 32 (for example, a rectangular plate shape) may be used. Furthermore, only the head portion 31 may be used as the head-side member.

Moreover, although the nut 34 and the fixing plate 40 are shown as the nut-side member in the embodiment, the nut-side member is not limited to this. For example, only the nut 34 may be used as the nut-side member, and the floor panel 20 may be fixed by engaging the threaded portion 33 of the bolt 30 on the side of the floor beam (floor beam 12) and tightening the nut 34. . Alternatively, a member for fixing to the floor beam 12 may be provided on the threaded portion 33 after the floor panel 20 is transported.

Also, the shape of the floor beam is not limited to the H-shaped steel like the floor beam 12 shown in the embodiment, and other shapes such as U-shape can be used. Therefore, the fastened portion of the floor beam is not limited to the upper flange 12a shown in the embodiment, and can be appropriately set according to the shape of the floor beam.

Further, in the embodiment, an example in which the floor panel 20 is provided with the recess (seat hole 22) is shown, but depending on the structure of the floor FL, the head of the bolt 30 may be formed by fittings or other members without providing the recess. 31 may be covered.

Moreover, in the embodiment, the hanging metal fitting 50 including the bolt engaging piece 51 and the hanging piece 52 is shown as the hanging metal fitting, but the present invention is not limited to this. For example, as long as the suspension fitting can be engaged with the head 31 of the bolt 30 and the washer 32, it is possible to use a suspension fitting other than a plate-shaped one, such as a U-shaped rod. In this case, the whole may be formed in a rod shape. Further, for example, a hook-shaped rod that can be engaged with a hook can be integrally provided on the plate-shaped bolt engagement piece 51 by welding or the like. Conversely, it is also possible to integrally form a plate-like hanging piece on a U-shaped rod that can be engaged with the head 31 and the washer 32 .

1 Building 12 Floor beam 12a Upper flange (fastened part)
20 floor panel 21 bolt through hole 22 counterbore (recess)
30 bolt 31 head (head side member)
32 washer (head side member)
33 screw part 34 nut (nut-side member)
40 fixed plate (nut side member: fixed member)
42 Engagement piece 50 Suspension fitting 51 Bolt engagement piece 51a Screw part insertion hole 52 Suspension piece (hanging fitting engagement part)
52a Head insertion hole 52b Locking hole (locking portion)
100 Hanging tool FL Floor SP Gap

Claims (6)

A floor panel transport method for transporting a floor panel so as to bridge a pair of floor beams of a building with a lifting device,
a bolt penetrating step of penetrating a threaded portion of a bolt through a bolt penetrating hole formed in the vicinity of an end of the floor panel placed on the floor beam, with a head-side member larger than the bolt penetrating hole facing upward; ,
A nut-side member larger than the bolt through-hole is engaged with the screw portion projecting downward from the floor panel from the bolt through-hole, and the position of the nut-side member is such that the bolt is attached to the nut-side member. a nut mounting step in which a gap of a predetermined distance can be formed between the head side member and the floor panel when pulled up until it is regulated;
a suspension fitting mounting step of inserting a suspension fitting into the gap and engaging the suspension fitting with the bolt;
a hanging tool hanging step for hanging the hanging tool of the lifting device on the hanging metal fitting;
a floor panel transporting step of transporting the floor panel so as to bridge the pair of floor beams by the lifting device;
A floor panel transportation method comprising: a hanging metal fitting removing step of removing the hanging metal fitting from the gap. In the floor panel transportation method according to claim 1,
The hanging fitting includes a bolt engaging piece that is inserted into the gap and engages with the bolt, and a hanging tool engaging portion that is provided integrally with the bolt engaging piece and engages the hanging tool, Further, the bolt engaging piece has a threaded portion insertion hole having a width through which the threaded portion can be inserted from one end of the bolt engaging piece toward the center thereof, while the head side member cannot be inserted therethrough,
In the hanging metal fitting mounting step, the bolt engaging piece is inserted into the gap while the threaded portion is inserted into the threaded portion insertion hole to engage the bolt engaging piece with the bolt;
In the hanging step, the floor panel carrying method involves engaging the hanging gear with the hanging hardware engaging portions of the pair of hanging metal fittings engaged with the bolts at both ends of the floor panel to lift the floor panel. In the floor panel transportation method according to claim 1 or claim 2,
The upper end of the bolt through hole is provided with a recess capable of accommodating the head side member at a position below the surface of the floor panel,
In the floor panel carrying method, in the step of removing the hanging metal fitting, the head side member is accommodated in the recess after removing the hanging metal fitting. In the floor panel transportation method according to claim 3,
The nut-side member includes a nut that engages with the threaded portion, and is disposed above the nut so as to be movable along the threaded portion. a fixing member movably attached to a non-engaging position where it does not engage with the beam in the vertical direction and an engaging position where it engages with the beam in the vertical direction;
In the floor panel transporting step, the floor panel transporting method arranges the fixing member at the non-engagement position. A suspension fitting used in the floor panel transportation method according to any one of claims 1 to 4,
a bolt engaging piece to be engaged with the bolt and provided integrally with the bolt engaging piece at an angle such that the bolt engaging piece stands up from the surface of the floor panel when inserted into the gap, and , and a hanging piece that can engage the hanging tool,
The bolt engaging piece has a threaded portion insertion hole with a width that allows the threaded portion to be inserted but does not allow the head side member to be inserted, from the end on the suspension piece side to the central portion of the bolt engagement piece. prepared,
The hanging piece is formed at the end on the side of the bolt engaging piece so as to be continuous with the threaded portion insertion hole, and has an open head so that the head side member can be inserted in a direction along the threaded portion insertion hole. A suspending metal fitting comprising an insertion hole and an engaging portion capable of engaging the suspending accessory. The floor panel bridged over a pair of floor joists is provided with a bolt having a threaded portion passed through the bolt through hole of the floor panel with the head side member upward, and the screw positioned below the floor panel. A floor panel fixing method for fixing to the floor beam using a fixing member attached to the part,
The bolt through-hole is formed at a position where the horizontal position does not overlap with the floor beam when the floor panel is bridged over the floor beam, and the fixing member attaches the floor panel to the screw portion. It is mounted movably between a non-engaging position where it does not engage with the floor beam in the vertical direction and an engagement position where it engages with the floor beam when it is bridged over the floor beam,
a bolt piercing step of piercing the threaded portion of the bolt through the screw through hole with the head side member facing up;
After the fixing member is attached to the screw portion projecting downward through the floor panel, a nut is attached to the screw portion from below the fixing member, and the fixing member is disengaged. a nut mounting step arranged at a position;
a transporting step of transporting the floor panel to a predetermined installation position spanning the pair of floor beams;
The fixing member is moved to the engagement position, and the nut is further tightened to fix the floor panel to the floor beam in a state in which the fastened portion of the floor beam is sandwiched between the fixing member and the floor panel. and a fixed step for
A floor panel fixing method using the floor panel conveying method according to any one of claims 1 to 4 from the bolt penetrating step to the conveying step.

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