JP2017218779A - Deflection preventing metal fitting, and metallic floor panel reinforcement method and reinforcement structure using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a highly workable and economically feasible deflection preventing metal fitting that may be fitted from above a metallic floor panel, along with a metallic floor panel reinforcement method and a reinforcement structure using the deflection preventing metal fitting.SOLUTION: A deflection preventing metal fitting 1 comprises an upper-side member 2, a lower-side member 3, and a bolt 4 connecting the upper- and lower-side members. The upper-side member 2 includes a recess 2a in an intermediate part, to be fitted in a slit S, and is of a form mountable on a top surface plate 10a. A bolt hole 2b is formed on the recess 2a, penetrating in a vertical direction. The lower-side member 3 includes a flat plate part 3a into which the bolt 4 may be screwed, and a standing part 3b provided on both edge parts of the flat plate part 3a and coming in contact with a rear surface of the top surface plate, the lower-side member being of a form that may pass through the slit S. A bottom end of the bolt 4 penetrating through the recess 2a and the flat plate part 3a in the vertical direction may almost come into contact with a beam junction part 12 and other lower members.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a metal floor panel that is regularly provided with slits through which air and light pass, among metal floor panels that are preferably used as floor plates for safety passages, work floors, platforms, maintenance decks, etc. in various factories. Belongs to the technical field.

A metal floor panel provided with slits for allowing air and light to pass through is formed by punching and bending a long and thin steel plate to form a substantially U-shaped cross-section of the upper surface plate and the side surface plate. In addition, a long slit in the panel width direction is continuously formed at a predetermined interval in the panel longitudinal direction.
This metal floor panel is formed into a predetermined planar region having a width of about 200 to 250 mm, a length of about 200 to 6000 mm (particularly about 1500 to 2000 mm), a height of about 40 to 60 mm, and a slit width of about 20 mm. On the other hand, the floor structure is constructed by laying continuously on the beam in the vertical and horizontal directions, but in recent years due to advantages such as good ventilation and lighting, maintaining a bright and clean environment and excellent aesthetics. It is implemented in various places such as factories and warehouses of modern equipment.

  Conventionally, a floor structure formed by continuously laying the metal floor panel (hereinafter sometimes abbreviated as a floor panel) is a good and stable walk or work without stress for an operator or the like. In order to provide a work floor that enables the floor panels to be connected in series in the longitudinal direction (see Patent Documents 1 and 2), the floor panels are connected in parallel in the width direction without gaps. Connecting metal fittings (see Patent Document 3), connecting metal parts (see Patent Documents 4 and 5) for connecting floor panels in parallel with a gap in the width direction, and fixing the end of the floor panel to the beam Metal fittings for various purposes such as fixing metal fittings (see Patent Document 4) have been developed and put into practice.

  By the way, as shown in FIGS. 10 and 11, among the floor panels 10 with slits S laid on the beam 11, the floor panel 10 laid on the beam joint portion 12 is used when the beams 11 are butt-joined to each other. In order to avoid contact with the splice plate 12a and the bolt (high-strength bolt) 12b used in the above, the side panel 10b of the floor panel 10 is partly cut and laid (see symbol X in the figure).

Japanese Patent Laid-Open No. 10-121717 Japanese Patent Laid-Open No. 10-238001 JP-A-10-159163 JP-A-2005-194805 JP 2009-30415 A

The floor panel 10 in which the side plate 10b is partly cut and laid is deformed by a load of a worker walking on the notch region X, causing damage to the floor panel 10 over time. there were.
Therefore, conventionally, there is no dedicated metal fitting suitable for preventing the bending deformation. Therefore, after laying the floor panel 10 in a predetermined plane area, the floor panel 10 is temporarily lifted and the beam joint 12 ( The support member (not shown) such as an angle member is interposed between the splice plate 12a) and the floor panel 10 (the back surface of the top plate 10a).

  However, in order to interpose the support member such as the angle member, there is a problem that labor and labor for lifting the floor panel 10 are increased, and the worker is burdened accordingly. This problem has become prominent when the weight of the floor panel to be lifted is doubled or more when the connecting fittings according to Patent Documents 1 to 5 are already attached.

  Further, if the support member is slightly higher than the required height, the floor panel will bend and cause damage to the floor panel 10 over time. If the height is insufficient, it may fall due to building vibration or the like. As described above, it is necessary to make the height exactly fit (fitted) between the floor panel 10 and the beam joint portion 12, and the work (processing) for adjusting to the right height is complicated and troublesome.

  The present invention has been devised in view of the problems of the background art described above, and the object of the present invention is to realize a flexure prevention metal fitting that can be attached by work from above the floor panel. Providing a bending prevention bracket and a metal floor panel reinforcement construction method and a reinforcement structure that are superior in workability and economy that can be easily adjusted in height without the labor and labor of lifting the panel 10 There is to do.

As a means for solving the above-mentioned problem, the deflection preventing metal fitting according to the invention described in claim 1 is a slit that is long in the panel width direction in the upper surface plate and has a substantially U-shaped cross-section with the upper surface plate and the side surface plate. When the metal floor panel continuously provided with a predetermined interval in the longitudinal direction of the panel is laid on the beam, the side plate is cut away to avoid contact with a lower member such as a beam joint. Deflection prevention metal fittings used for metal floor panels,
The deflection preventing metal fitting is composed of an upper member, a lower member, and a bolt connecting them,
The upper member has a concave portion that fits into the slit in the middle portion and is shaped to be placed on the upper surface plate, and the concave portion is provided with a bolt through hole penetrating in the vertical direction.
The lower member includes a flat plate portion into which the bolt can be screwed, and a rising portion that is provided at both ends of the flat plate portion and can come into contact with the back surface of the upper plate, and has a shape that can pass through the slit. That
A lower end portion of the bolt that penetrates the concave portion and the flat plate portion in a vertical direction is configured to be able to substantially contact a lower member such as the beam joint portion.

According to a second aspect of the present invention, there is provided a deflection preventing metal fitting having a substantially U-shaped cross section which is downwardly formed by an upper surface plate and a side surface plate. In order to avoid contact with lower members such as beam joints when laying a metal floor panel on the beam in which the slits and the reverse U-shaped cross-sections between the slits are alternately continuous are provided. A deflection preventing metal fitting used for a metal floor panel with the side plate cut out,
The deflection preventing metal fitting comprises a retaining member and a bolt;
The hooking member is formed in a substantially Z-shaped cross section by a web and flanges provided at the upper and lower ends of the web, and the lower flange has a screw hole and a horizontal portion protruding toward the upper flange. Being extended,
The upper surface of the lower flange of the substantially Z-shaped hooking member is brought into contact with the protruding portion below one of the inverted U-shaped cross sections sandwiching the slit, and the other inverted U-shaped cross section is The lower end portion of the bolt that penetrates the lower flange in the vertical direction while being sandwiched between the upper flange and the horizontal portion is configured to be able to substantially contact a lower member such as the beam joint portion. Features.

  According to a third aspect of the present invention, in the metal floor panel deflection preventing metal fitting according to the first aspect, the upper member of the deflection preventing metal fitting has a hooking portion that is hooked on the slit downward at both ends thereof. It is provided.

  According to a fourth aspect of the present invention, there is provided the metal floor panel deflection preventing metal fitting according to the second aspect, wherein the horizontal portion extended to the lower flange of the latching member of the deflection preventing metal fitting is formed of the hooking member. A part of the web is formed by cutting and raising the upper flange side.

  The invention described in claim 5 is the metal floor panel deflection preventing metal fitting described in any one of claims 1 to 4, wherein the upper member of the deflection preventing metal fitting, or the upper flange of the latching member, A through-hole that can be positioned in a convex emboss formed on an upper surface plate of a metal floor panel is provided.

A reinforcement method for a metal floor panel according to the invention described in claim 6 is a reinforcement method for a metal floor panel using the deflection preventing metal fitting according to claim 1, 3 or 5, wherein the upper member and The lower member of the deflection preventing metal fitting connected to the lower member with a bolt inserted from above is passed from above to a predetermined slit in the cutout region of the side plate of the metal floor panel. Located below the floor panel,
The upper member is lifted after rotating the direction of the lower member by approximately 90 degrees, and the upper end portion of the rising portion of the lower member is brought into contact with the back surface of the upper plate.
Thereafter, the bolt is screwed, the lower end portion of the bolt is brought into a substantially abutting state with the lower member such as the beam joint portion, and the upper member is fitted into the corresponding slit in the concave portion of the intermediate portion. It is made to contact | abut to an upper surface board.

  A reinforcement method for a metal floor panel according to the invention described in claim 7 is a reinforcement method for a metal floor panel using the deflection prevention metal fitting according to claim 2, 4 or 5, wherein the deflection prevention metal fitting is used. And the lower flange of the metal floor panel is passed through a predetermined slit in the cutout region of the side plate of the metal floor panel from above and brought into contact with the lower ridge of one of the inverted U-shaped sections. The upper flange and the horizontal portion are positioned in such a manner that the other inverted U-shaped section is sandwiched from above and below, and then the bolt is screwed, and the lower end portion of the bolt is substantially connected to the lower member such as the beam joint portion. It is a contact state.

  According to an eighth aspect of the present invention, in the reinforcing method for a metal floor panel according to the seventh aspect of the present invention, the deflection preventing metal fitting is previously connected with a bolt through which the retaining member is inserted from above. It is characterized by.

A reinforcement structure for a metal floor panel according to the invention described in claim 9 is a reinforcement structure for a metal floor panel using the deflection preventing metal fitting according to claim 1, 3 or 5, wherein the metal floor panel In the notch region of the side plate of the panel, the deflection preventing metal fitting is in contact with the upper surface plate of the metal floor panel in a state where the upper member is fitted into the corresponding slit in the concave portion of the intermediate portion. The upper end portion of the rising portion of the lower member is in contact with the back surface of the top plate and is fixed in a configuration that sandwiches the metal floor panel from above and below,
A lower end portion of a bolt that penetrates the concave portion and the flat plate portion in the vertical direction is substantially in contact with a lower member such as the beam joint portion.

A metal floor panel reinforcement structure according to an invention described in claim 10 is a metal floor panel reinforcement structure using the deflection preventing metal fitting according to claim 2, 4 or 5, wherein the metal floor panel In the notch region of the side plate of the panel, the deflection preventing metal fitting is such that the lower flange of the latching member is in contact with the lower ridge portion of one reverse U-shaped cross section and the other cross section is reversed. A U-shaped strip portion is configured to be sandwiched between the upper flange and the horizontal portion from above and below,
A lower end portion of a bolt that penetrates the lower flange in a vertical direction is substantially in contact with a lower member such as the beam joint portion.

  According to an eleventh aspect of the present invention, in the reinforcing structure for a metal floor panel according to the ninth or tenth aspect, one or two of the deflection preventing metal fittings are balanced in the notch region as viewed from a plane direction. It is characterized by being arranged.

  The invention described in claim 12 is the reinforcing structure for a metal floor panel according to any one of claims 9 to 11, wherein a height dimension of the metal floor panel is about 60 mm. To do.

  The invention described in claim 13 is the reinforcing structure for a metal floor panel according to any one of claims 9 to 12, wherein the metal floor panel has an inward lip portion at a lower end of a side plate thereof. The cross-sectional shape is extended.

According to the deflection prevention metal fitting and the reinforcement method and reinforcement structure of a metal floor panel using the deflection prevention metal fitting according to the present invention, the following effects can be obtained.
(1) By adopting a structure in which the lower end portion of the bolt of the bending prevention metal fitting is substantially brought into contact with the upper surface of a lower member (splice plate) such as a floor joint portion, a worker walking in the notch region of the metal floor panel It is possible to prevent the occurrence of the bending deformation by sufficiently resisting the axial force of the bolt that uses the lower member (splice plate) as a reaction force against the bending deformation that may occur due to weight or the like. As a result, deterioration and damage of the metal floor panel can be prevented.
(2) The structure of the bending prevention metal fitting is very simple and convenient, and there is no possibility of falling into the slit.
(3) Since it can be attached by work from above the metal floor panel, there is no need for labor and labor for lifting the metal floor panel. In addition, height adjustment, which has been difficult in the past, can be freely adjusted by tightening or loosening bolts. Therefore, it is very excellent in workability (workability) and economy.

FIG. 2A is a front view showing the deflection preventing metal fitting according to the first embodiment at a substantially full size, and B is an exploded perspective view of the bending preventing metal fitting. 1A is a perspective view showing a reinforcing structure of a metal floor panel using the deflection preventing metal fitting according to FIG. 1, B is a sectional view taken along line B-B of A, and C is C-C of A. FIG. FIG. 1A is a perspective view showing a reinforcing structure of a metal floor panel using the deflection preventing metal fitting according to FIG. 1, B is a sectional view taken along line B-B of A, and C is C-C of A. FIG. FIG. It is the D section enlarged view of Drawing 3A. A is the front view which showed the bending prevention metal fitting which concerns on Example 2 by substantially full size, B is the disassembled perspective view of the same bending prevention metal fitting. A is a BB line sectional view at the time of applying a deflection prevention metal fitting concerning Drawing 5 to a metal floor panel of Drawing 2A, and B is a CC line arrow sectional view. It is the D section enlarged view at the time of applying the deflection prevention metal fitting concerning Drawing 5 to the metal floor panel of Drawing 3A. A is the front view which showed the deflection | deviation prevention metal fitting which concerns on Example 3 by substantially full size, B is the disassembled perspective view of the said bending | flexion prevention metal fitting. A is a top view which showed the reinforcement structure of the metal floor panel using the bending prevention metal fitting which concerns on FIG. 8, B is AB BB arrow sectional drawing, C is C of A FIG. For B and C, the high strength bolt (12b) is omitted for convenience of illustration. A is a perspective view showing a floor structure constructed using a metal floor panel according to the prior art, B is a cross-sectional view taken along line B-B of A, and C is a line C-C of A. It is arrow sectional drawing. A is a perspective view showing a floor structure constructed using a metal floor panel according to the prior art, B is a cross-sectional view taken along line B-B of A, and C is a line C-C of A. It is arrow sectional drawing.

  Next, an embodiment of a deflection prevention metal fitting and a metal floor panel reinforcement method and reinforcement structure using the deflection prevention metal fitting according to the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 4, the deflection preventing metal fitting according to the first embodiment has a substantially U-shaped cross-section with the upper surface plate 10a and the side surface plate 10b, and the upper surface plate 10a has a long slit in the panel width direction. When the metal floor panel 10 in which S is provided continuously at a predetermined interval in the longitudinal direction of the panel is laid on the beam 11, a lower member (such as a splice plate 12a, This is a deflection preventing metal fitting 1 used for the metal floor panel 10 in which the side plate 10b is cut away in order to avoid contact with the force bolt 12b).
The deflection preventing metal fitting 1 includes an upper member 2, a lower member 3, and a bolt 4 that connects them.
The upper member 2 has a concave portion 2a that fits in the slit S in the middle portion and is shaped to be placed on the upper surface plate 10a. The concave portion 2a is provided with a bolt through hole 2b that penetrates in the vertical direction.
The lower member 3 includes a flat plate portion 3a into which the bolt 4 can be screwed, and a rising portion 3b provided at both ends of the flat plate portion 3a and capable of coming into contact with the back surface of the upper plate 10a. The shape can pass through.
A lower end portion of the bolt 4 penetrating the concave portion 2a and the flat plate portion 3a in the vertical direction is configured to be able to substantially contact a lower member such as the beam joint portion 12 or the like.

In short, the deflection preventing metal fitting 1 is a metal floor panel 10 (hereinafter sometimes abbreviated as a floor panel) in which a side plate 10b is cut out in order to avoid contact with a lower member such as a beam joint 12 or the like. The object is to be implemented by attaching and fixing a required number (preferably one or two in good balance) in the cutout region X.
The deflection preventing metal fitting 1 fixed to the floor panel 10 is configured so that the lower end portion (tip portion) of the bolt 4 is substantially in contact with the upper surface of the beam joint portion 12 (mainly the splice plate 12a). This is a configuration in which the occurrence of the bending deformation is prevented by resisting the bending deformation that would be caused by the weight of the worker walking in the notch region X by the axial force of the bolt 4.
Here, the “substantially abutting” means that a gap formed between the lower end of the bolt 4 and the upper surface of the splice plate 12a is about 0 to 2 mm.

  Therefore, first, the floor panel to which the deflection preventing metal fitting 1 according to the present invention is applied will be described, and then the configuration of the deflection preventing metal fitting 1 will be described.

The floor panel 10 is formed by punching and bending a long and narrow steel plate to form a downward substantially U-shaped cross section with an upper surface plate 10a and a side surface plate 10b in which an inward lip portion extends at the lower end, The slits S that are long in the panel width direction are continuously formed in the upper surface plate 10a at predetermined intervals in the panel longitudinal direction.
The floor panel 10 is implemented with a width of about 200 to 250 mm, a length of about 200 to 6000 mm (particularly about 1500 to 2000 mm), a height of about 60 mm, and a slit (S) width of about 20 mm.
In addition, the floor panel 10 has a flat top plate 10a as shown in FIG. 2A, and a large number of non-slip convex embosses (projections) T on the top plate 10a as shown in FIG. 3A. Although there exists a non-slip type, the bending prevention metal fitting 1 which concerns on this invention can be implemented suitably with respect to both.
2A shows a state in which the floor panel 10 is arranged in parallel on the beam 11, and FIG. 3A shows a state in which the floor panel 10 is arranged orthogonally on the beam 11. The notched area X is inevitably larger in the floor panel 10 arranged in parallel. In addition, the code | symbol 13 in FIG. 3 has shown the metal receiving material often used when arrange | positioning orthogonally. The metal receiving member 13 is welded to the upper flange of the corresponding beam member 11 for implementation.
However, the usage method (attachment method) of the deflection preventing metal fitting 1 to the floor panel 10 is the same whether it is the floor panel 10 arranged in parallel on the beam 11 or the floor panel 10 arranged orthogonally. In addition, it should be noted that the same reference numerals are sometimes given together without being divided into cases, so that they may be explained together.

The deflection preventing metal fitting 1 is originally made of metal, and includes three members: an upper member 2, a lower member 3, and a bolt 4 that connects them.
The upper member 2 has a concave portion 2a of a size that fits in the slit S at an intermediate portion thereof, has an inverted hat shape that rests on the upper surface plate 10a, and penetrates the central portion of the concave portion 2a in the vertical direction. Bolt through holes 2b are provided. The upper member 2 is provided with a through-hole 2c that can be positioned well even when a convex emboss (projection) T is formed on the upper surface plate 10a of the floor panel 10. Furthermore, the upper member 2 has hooking portions 2d extending downward at both ends thereof, which are hooked on the slit S and prevent horizontal rotation to facilitate positioning.

  On the other hand, the lower member 3 has a flat plate portion 3a in which a screw hole into which the bolt 4 can be screwed is formed at a center portion, and extends at both ends of the flat plate portion 3a. The rising portion 3b that can be in contact with each other forms an upward U-shape so that it can pass through the slit S.

Exemplifying the size of the deflection preventing metal fitting 1, the upper member 2 has a plate thickness of about 2.3 mm and a width wider than the width of the slit S (about 20 mm) to prevent falling into the slit S. About 25 mm in length, about 75 mm in length, and the height (depth) of the recess 2a is the height of the cross-section inverted U-shaped strip R formed between the adjacent slits S, S (see FIGS. 2B and 3B). It is carried out at a height of about 15 mm, which is higher than the total length.
The lower member 3 has a plate thickness of about 2.3 mm, a width of about 18 mm that can pass through the slit S, a length of about 37 mm, which is about half that of the upper member 2, and a height of the rising portion 3b. It is implemented at 13 mm.
The bolt (head bolt) 4 has an axial diameter of about 6 mm and a total length of about 50 mm. The shaft diameter of the bolt 4 can be appropriately designed and deformed according to the axial force required to prevent the floor panel 10 from being bent and deformed. Further, the total length is not limited to about 50 mm, and when the floor panel 10 (upper surface plate 10a) is fixed between the upper member 2 and the lower member 3 so as to be sandwiched from above and below, the lower end portion is connected to the beam. A length that can substantially contact the lower member (the splice plate 12a having a thickness of about 9 mm in this embodiment) such as the portion 12 and the upper end portion does not protrude above the upper surface of the upper member 2 for safety reasons. Is set to

Next, the reinforcement structure of the metal floor panel 10 using the bending prevention metal fitting 1 of the said structure is demonstrated.
As shown in FIGS. 2 to 4, the reinforcing structure of the metal floor panel 10 is such that the deflection preventing metal fitting 1 is an upper member in the cutout region X of the side plate 10 b of the metal floor panel 10. 2 is in contact with the upper surface plate 10a of the metal floor panel 10 with the intermediate recess 2a fitted in the corresponding slit S, and the upper end portion of the rising portion 3b of the lower member 3 is the upper surface plate. The lower end of the bolt 4 that is in contact with the back surface of 10a and is fixed in such a manner as to sandwich the metal floor panel 10 from above and below, and penetrates the concave portion 2a and the flat plate portion 3a in the vertical direction, The lower member (such as the splice plate 12a in this embodiment) such as the portion 12 is substantially in contact.
As described above, by adopting a structure in which the lower end portion of the bolt 4 is substantially in contact with the upper surface of the splice plate 12a, the bending deformation that would occur due to the weight of the worker walking in the notch region X, etc. By sufficiently resisting the axial force of the bolt 4 using the splice plate 12a as a reaction force, the occurrence of the bending deformation can be prevented in advance.
It should be noted that one deflection preventing metal fitting 1 according to the present embodiment is arranged in a balanced manner in the notch region X as viewed from the plane direction, that is, one at a substantially central position of the notch region X. However, the present invention is not limited to this, and two slits S located substantially at the center may be provided on the left and right sides. However, it is assumed that the splice plate 12a exists immediately below the bolt 4 of the deflection preventing metal fitting 1.

The reinforcing method for realizing the reinforcing structure of the metal floor panel 10 having the above configuration will be described. First, the lower member 3 of the deflection preventing metal fitting 1 in the state shown in FIG. Then, it passes through a predetermined slit S in the notch region X from above and is positioned below the metal floor panel 10.
Subsequently, the direction of the lower member 3 is rotated by approximately 90 degrees and then pulled up so that the upper end portion of the rising portion 3b of the lower member 3 is brought into contact with the back surface of the upper surface plate 10a.
Thereafter, the bolt 4 is screwed, and the lower end portion of the bolt 4 is brought into a substantially abutting state with a lower member (splice plate 12a in the present embodiment) such as the beam joint portion 12, and the upper member 2 is The concave portion 2a of the intermediate portion is brought into contact with the upper surface plate 10a in a state where the concave portion 2a is fitted into the corresponding slit S (particularly, see the enlarged views of FIGS. 2B and 3B).
The above steps are repeated according to the number of the deflection preventing metal fittings 1, thereby realizing the reinforcing structure of the metal floor panel 10, and thus constructing the floor structure.

According to the bending prevention metal fitting 1 and the reinforcing method and the reinforcing structure of the metal floor panel 10 using the bending prevention metal fitting 1 according to the first embodiment described above, the following effects can be obtained.
1) By adopting a structure in which the lower end portion of the bolt 4 of the deflection preventing metal fitting 1 is substantially brought into contact with the upper surface of the splice plate 12a, the deflection deformation that may occur due to the weight of the worker walking in the notch region X is prevented. On the other hand, since the axial force of the bolt 4 having the splice plate 12a as a reaction force sufficiently resists, the occurrence of the bending deformation can be prevented in advance. As a result, deterioration and damage of the metal floor panel 10 can be prevented beforehand.
2) The structure of the deflection preventing metal fitting 1 is very simple and easy to use, and there is no possibility of falling into the slit S.
3) Since it can be attached by work from above the floor panel 10, there is no need for labor and labor for lifting the floor panel 10. In addition, height adjustment, which has been difficult in the past, can be freely adjusted by tightening or loosening the bolt 4. Therefore, it is very excellent in workability (workability) and economy.

5 to 7 show variations of the deflection preventing metal fitting 1 according to the first embodiment. The deflection preventing metal fitting 1 ′ according to the second embodiment is different from the deflection preventing metal fitting 1 according to the first embodiment only in the configuration of the lower members 3 and 3 ′. The configuration is the same (see FIG. 1 and FIG. 5 in comparison).
That is, the lower member 3 ′ according to the second embodiment is reinforced by extending the both widths of the flat plate portion 3 a ′ in which the screw hole into which the bolt 4 can be screwed is formed at the center portion into an upward rib shape. Further, both end portions of the rib are further extended upward to form a rising portion 3b ′ that can be brought into contact with the back surface of the upper surface plate 10a, and has a shape that can pass through the slit S (the paragraph [ See 0031]).
Since the attachment part and attachment means to the floor panel 10 of the deflection preventing metal fitting 1 'according to the second embodiment are the same as those in the first embodiment, the same reference numerals are given and the description thereof is omitted (FIGS. 2B and 2C and FIG. 6A, B, and compare FIGS. 4 and 7).
Therefore, according to the reinforcement construction method and the reinforcement structure of the metal floor panel 10 using the deflection preventing metal fitting 1 ′ and the deflection preventing metal fitting 1 ′ in the second embodiment, the same operational effects as the first embodiment are exhibited (the above-described embodiment). Paragraph [0035]).

8 and 9 show variations of the deflection preventing metal fitting 1 according to the first embodiment.
Compared with the deflection preventing metal fittings 1 and 1 'according to the first and second embodiments, the deflection preventing metal fitting 5 according to the third embodiment is mainly composed of two members, a latching member 6 and a bolt 7. Is different. Since the floor panel 10 to be applied and its attachment site are the same, the following description will be given with reference to FIGS. 2A and 3A.

When the metal floor panel 10 having the above-described configuration is laid on the beam 11, the deflection preventing metal fitting 5 according to the third embodiment is a lower member such as the beam joint 12 (in FIGS. 9B and 9C, the high-strength bolt 12b is illustrated). For the purpose of avoiding contact with the metal floor panel 10, the deflection preventing metal fitting 5 used for the metal floor panel 10 with the side plate 10 b cut out is composed of a hooking member 6 and a bolt 7.
The hooking member 6 is formed in a substantially Z-shaped cross section by a web 6a and flanges 6b and 6c provided at the upper and lower ends of the web 6a, and a screw hole 6d is provided in the lower flange 6c. A horizontal portion 6e protruding to the upper flange 6b side is extended.
Then, as shown in FIG. 9C, the upper surface of the lower flange 6c of the hooking member 6 having the substantially Z-shaped cross section is formed on the lower ridge portion of the one reverse U-shaped ridge portion R sandwiching the slit S therebetween. The lower end portion of the bolt 7 passing through the lower flange 6c in the up-down direction in the state where the other U-shaped cross-section R is held between the upper flange 6b and the horizontal portion 6e is in contact with the beam. It is implemented in a configuration that can substantially abut against a lower member (a splice plate 12a in this embodiment) such as a joint.

  The horizontal portion 6e according to this embodiment is formed by cutting and raising a part of the web 6a of the hooking member 6 toward the upper flange 6b. Further, the upper flange 6b of the latching member 6 is provided with a through-hole 6b 'that can be positioned well even when a convex emboss (projection) T is formed on the upper surface plate 10a of the floor panel 10. ing.

The latch member 6 of the deflection preventing metal fitting 5 is formed by bending, punching, and cutting up a single plate having a plate thickness of about 2.3 mm. The width of the web 6a is about 18 mm, the height is about 15 mm higher than the height of the reverse U-shaped section R, and the width of the upper flange 6b is about 25 mm wider than the slit S, the length is about 23 mm, and the lower flange 6c. The width is about 18 mm, the length is about 38 mm, the width of the horizontal portion 6 e is about 6 mm, and the protruding dimension is about 7 mm.
Similar to the bolt 4 according to the first embodiment, the bolt (head bolt) 7 has an axial diameter of about 6 mm and a total length of about 50 mm. The shaft diameter of the bolt 7 can be appropriately designed and deformed according to the axial force required to prevent the floor panel 10 from being deformed. Further, the total length is not limited to about 50 mm, and the floor panel 10 (the inverted U-shaped strip portion R of the upper surface plate 10a) is sandwiched from above and below by the upper flange 6b and the horizontal portion 6e of the retaining member 6. When fixed, the lower end portion can substantially contact the lower member (splice plate 12a in the present embodiment) such as the beam joint portion 12, and the upper end portion is above the upper surface of the upper flange 6b for safety reasons. The length is set so as not to protrude.

Next, the reinforcement structure of the metal floor panel 10 using the deflection preventing metal fitting 5 having the above-described configuration will be described.
The reinforcing structure of the metal floor panel 10 is formed in the notch region X of the side plate 10b of the metal floor panel 10 (see FIGS. 2A and 3A). The lower flange 6c is in contact with the protrusion below the one reverse U-shaped section R, and the other inverted U-shaped section R is sandwiched between the upper flange 6b and the horizontal section 6e from above and below. The lower end of the bolt 7 that is fixed in the configuration and passes through the lower flange 6c in the vertical direction is substantially in contact with a lower member (splice plate 12a in this embodiment) such as the beam joint ( In particular, see FIG. 9C).
In this way, by adopting a structure in which the lower end portion of the bolt 7 is substantially abutted against the upper surface of the splice plate 12a, with respect to the deflection deformation that would occur due to the weight of the worker walking in the notch region X, etc. By sufficiently resisting the axial force of the bolt 7 using the splice plate 12a as a reaction force, the occurrence of the bending deformation can be prevented in advance.
Note that one or two deflection preventing metal fittings 5 according to the present embodiment are arranged in a balanced manner in the notch region X as viewed from the plane direction, as in the first embodiment.

The reinforcing method for realizing the reinforcing structure of the metal floor panel 10 having the above configuration will be described. First, the lower flange 6c of the latching member 6 of the deflection preventing metal fitting 5 in FIG. Is moved downward and passed through a predetermined slit S in the notch region X from above, and its tip is moved to the right in FIG. 9C so that the horizontal portion 6e is the other inverted U-shaped section R. Wait to pass the lower end of
Thereafter, the lower flange 6c is brought into contact with the protruding portion below the one reverse U-shaped section R, and the other inverted U-shaped section R is vertically moved by the upper flange 6b and the horizontal section 6e. Then, the bolt 7 is screwed, and the lower end portion of the bolt 7 is brought into a substantially abutting state with a lower member (splice plate 12a in the present embodiment) such as the beam joint portion.
The above process is repeated according to the number of the deflection preventing metal fittings 5, thereby realizing the reinforcing structure of the metal floor panel 10, and thus constructing the floor structure.

According to the bending prevention metal fitting 5 and the reinforcement construction method and the reinforcement structure of the metal floor panel 10 using the deflection prevention metal fitting 5 according to the third embodiment described above, the following effects are obtained.
1) By adopting a structure in which the lower end of the bolt 7 of the deflection preventing metal fitting 5 is substantially in contact with the upper surface of the splice plate 12a, the deflection deformation that may occur due to the weight of the worker walking in the notch region X is prevented. On the other hand, since the axial force of the bolt 7 having the splice plate 12a as a reaction force sufficiently resists, the occurrence of the deflection deformation can be prevented in advance. As a result, deterioration and damage of the metal floor panel 10 can be prevented beforehand.
2) The structure of the deflection preventing metal fitting 5 is very simple and easy to use, and there is no possibility of falling into the slit S.
3) Since it can be attached by work from above the floor panel 10, there is no need for labor and labor for lifting the floor panel 10. In addition, height adjustment, which has been difficult in the past, can be freely adjusted by tightening or loosening the bolt 7. Therefore, it is very excellent in workability (workability) and economy.
4) Also, compared to the deflection preventing metal fittings 1 and 1 'according to the first and second embodiments, since the number of members is small and the number of steps for attaching to the floor panel 10 is small, it is further excellent in workability and economical efficiency. It can be said that

Although the embodiments have been described with reference to the drawings, the present invention is not limited to the illustrated examples and includes a range of design changes and application variations that are usually made by those skilled in the art without departing from the technical idea thereof. I will mention that just in case.
For example, a cap member such as a resin cap is attached to the distal end portion of the bolts 4 and 7 (see FIGS. 1, 5, and 8) of the deflection preventing metal fittings 1, 1 ′ and 5, or the distal end portion and the lower member A device such as interposing a cushioning material with the (splice plate 12a) to prevent the lower member (splice plate 12a) from being damaged is appropriately taken.

DESCRIPTION OF SYMBOLS 1 Deflection prevention metal fitting 2 Upper part 2a Recessed part 2b Bolt through-hole 2c Through-hole 2d Latching part 3 Lower side member 3a Flat plate part 3b Rising part 4 Bolt 1 'Deflection prevention metal fitting 3' Lower side member 3a 'Flat plate part 3b' Rising part 5 Deflection Prevention Bracket 6 Hanging Member 6a Web 6b Upper Flange 6b 'Through Hole 6c Lower Flange 6d Screw Hole 6e Horizontal Part 7 Bolt 10 Metal Floor Panel (Floor Panel)
10a Top plate 10b Side plate 11 Beam 12 Beam joint 12a Splice plate 12b High-strength bolt 13 Receptor R Cross-section inverted U-shaped strip S Slit T Convex emboss (projection)
X Notch area

Claims (13)

The top plate and the side plate have a substantially U-shaped cross-section facing downward, and a metal floor panel is provided on the beam, in which slits that are long in the panel width direction are continuously provided at predetermined intervals in the panel longitudinal direction. When laying on the metal floor panel cut out the side plate to avoid contact with the lower member such as a beam joint,
The deflection preventing metal fitting is composed of an upper member, a lower member, and a bolt connecting them,
The upper member has a concave portion that fits into the slit in the middle portion and is shaped to be placed on the upper surface plate, and the concave portion is provided with a bolt through hole penetrating in the vertical direction.
The lower member includes a flat plate portion into which the bolt can be screwed, and a rising portion that is provided at both ends of the flat plate portion and can come into contact with the back surface of the upper plate, and has a shape that can pass through the slit. That
The bending of the metal floor panel, wherein a lower end portion of the bolt penetrating the concave portion and the flat plate portion in the vertical direction is configured to be substantially in contact with a lower member such as the beam joint portion. Prevention bracket. The upper surface plate and the side surface plate have a substantially U-shaped cross section facing downward, and the upper surface plate is provided with slits long in the panel width direction at predetermined intervals in the panel longitudinal direction, and the cross section between the slit and the slits Deflection used for a metal floor panel in which the side plate is cut out in order to avoid contact with a lower member such as a beam joint portion when laying a metal floor panel with inverted U-shaped strips alternately on a beam. Prevention brackets,
The deflection preventing metal fitting comprises a retaining member and a bolt;
The hooking member is formed in a substantially Z-shaped cross section by a web and flanges provided at the upper and lower ends of the web, and the lower flange has a screw hole and a horizontal portion protruding toward the upper flange. Being extended,
The upper surface of the lower flange of the substantially Z-shaped hooking member is brought into contact with the protruding portion below one of the inverted U-shaped cross sections sandwiching the slit, and the other inverted U-shaped cross section is The lower end portion of the bolt that penetrates the lower flange in the vertical direction while being sandwiched between the upper flange and the horizontal portion is configured to be able to substantially contact a lower member such as the beam joint portion. A metal fitting that prevents bending of metal floor panels.   2. The metal floor panel deflection preventing metal fitting according to claim 1, wherein the upper member of the deflection preventing metal fitting is provided with a hooking portion that faces the slit downward at both ends thereof. 3.   The horizontal portion extended to the lower flange of the latching member of the deflection preventing metal fitting is formed by cutting and raising a part of the web of the latching member to the upper flange side. Metal floor panel deflection prevention metal fittings described in 1.   The upper member of the deflection preventing metal fitting or the upper flange of the latching member is provided with a through hole that can be positioned on a convex emboss formed on an upper surface plate of a metal floor panel. Deflection prevention metal fittings of metal floor panels given in any 1 paragraph of 1-4. A method for reinforcing a metal floor panel using the deflection preventing metal fitting according to claim 1, 3 or 5,
The lower member of the deflection preventing metal fitting in a state where the upper member and the lower member are connected by a bolt inserted from above is inserted into the predetermined slit in the cutout region of the side plate of the metal floor panel from above. Through and positioned below the metal floor panel;
The upper member is lifted after rotating the direction of the lower member by approximately 90 degrees, and the upper end portion of the rising portion of the lower member is brought into contact with the back surface of the upper plate.
Thereafter, the bolt is screwed, the lower end portion of the bolt is brought into a substantially abutting state with the lower member such as the beam joint portion, and the upper member is fitted into the corresponding slit in the concave portion of the intermediate portion. A method for reinforcing a metal floor panel, characterized in that the metal floor panel is brought into contact with the top plate. A method for reinforcing a metal floor panel using the deflection preventing metal fitting according to claim 2, 4 or 5,
The hook member of the deflection preventing metal fitting is passed through a predetermined slit in the notch region of the side plate of the metal floor panel from above, and the projecting portion below one of the inverted U-shaped sections in the cross section. After the abutting and positioning with the upper flange and the horizontal portion sandwiching the other inverted U-shaped section in the vertical direction, the bolt is screwed, the lower end of the bolt is the beam joint, etc. A method for reinforcing a metal floor panel, wherein the lower member is substantially in contact with the lower member.   The method for reinforcing a metal floor panel according to claim 7, wherein the deflection preventing metal fitting is previously connected with a bolt through which the hook member is inserted from above. A reinforcing structure of a metal floor panel using the deflection preventing metal fitting according to claim 1, 3 or 5,
In the notch region of the side plate of the metal floor panel, the deflection preventing metal fitting abuts against the upper surface plate of the metal floor panel in a state where the upper member is fitted into the corresponding slit in the middle recess. In addition, the upper end portion of the rising portion of the lower member is abutted against the back surface of the upper plate, and is fixed in a configuration that sandwiches the metal floor panel from above and below,
A reinforcing structure for a metal floor panel, wherein a lower end portion of a bolt passing through the concave portion and the flat plate portion in a vertical direction is substantially in contact with a lower member such as the beam joint portion. A reinforcement structure for a metal floor panel using the deflection preventing metal fitting according to claim 2, 4 or 5,
In the notch region of the side plate of the metal floor panel, the flexure prevention metal fitting has a lower flange of the hooking member abutted against a protruding ridge portion below one of the cross-section inverted U-shaped portions, The other cross-section inverted U-shaped strip portion is configured to be sandwiched from above and below by the upper flange and the horizontal portion,
A reinforcing structure for a metal floor panel, wherein a lower end portion of a bolt penetrating the lower flange in a vertical direction is substantially in contact with a lower member such as the beam joint portion.   The reinforcing structure for a metal floor panel according to claim 9 or 10, wherein one or two of the deflection preventing metal fittings are arranged in a balanced manner in the cutout region when viewed from a plane direction. .   The metal floor panel reinforcement structure according to any one of claims 9 to 11, wherein a height dimension of the metal floor panel is about 60 mm.   The metal floor panel according to any one of claims 9 to 12, wherein the metal floor panel has a cross-sectional shape in which an inward lip portion extends at a lower end of a side plate. Reinforcement structure.

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