JP2002021235A - Perforated steel floor material and method for using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide perforated steel floor materials which facilitate transverse connection thereof in a width direction in the construction field, and does not cause degradation in corrosion resistance at a joint portion of the floor materials. SOLUTION: The floor material 10 is formed of a C-shaped steel product which has been subjected to hot dip galvanizing treatment. A plane portion 11 of the C-shaped steel product has widthwise extending slit holes 11a formed therein at predetermined intervals in a longitudinal direction. Further, each of side surfaces 12 and 12 of the floor material has through holes 12a penetrated therethrough at predetermined longitudinal intervals. Then, the plurality of floor materials 10, 10... are arranged in a transverse direction, and the side surfaces 12 of the adjacent floor materials 10 and 10 are connected together by bolts 20 inserted into the through holes 12a formed in the respective side surfaces 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flooring made of perforated steel using C-shaped steel and a method of using the same.

[0002]

2. Description of the Related Art Some perforated steel flooring materials used for building rooftop floors, parking lot floors, safety passages, etc. use C-shaped steel materials. This flooring is shown in FIG. The floor material 1 is made of a C-shaped steel material having a large number of slit holes 2, 2,. A large number of slit holes 2, 2,... Extend in the width direction of the plane portion, and are provided in parallel at predetermined intervals in the longitudinal direction.

[0003] This perforated steel flooring material is lightweight and high-strength, and can increase the distance between receiving beams. In addition, it is possible to fix to the receiving beam without performing welding or drilling by using a dedicated fastener using the slit hole in the plane portion, and the construction is easy. Furthermore, it shows excellent corrosion resistance due to the hot-dip galvanizing treatment in the factory.

[0004]

The perforated steel flooring material has a standardized width of 250 mm. For this reason, the width adjusting member 3 is required depending on the floor width, layout and the like. The width adjusting member 3 is a so-called accessory that is separately manufactured according to the required width, and is made of a C-shaped steel material subjected to a hot-dip galvanizing process. The width adjusting member 3 is fixed by being welded to the adjacent perforated steel flooring 1 because no slit hole is provided in the plane portion.

[0005] This welding is carried out before plating the perforated steel floor material 1 and the width adjusting material 3 at a factory in order to prevent the corrosion resistance of the welded portion 4 from deteriorating. Then, the side surfaces of the perforated steel floor material 1 and the width adjusting material 3 are welded to each other, and hot-dip galvanizing is performed in a state where the both are connected. However, the plated metal does not easily penetrate between the welded side portions, and the corrosion resistance of the connection portion may be insufficient.

Further, depending on construction conditions, it may be advantageous to connect a plurality of perforated steel flooring members in the width direction. When multiple perforated steel flooring materials are connected in the width direction,
The load is dispersed and bending can be prevented. Also, the number of dedicated fasteners used can be reduced. However, regarding the connection of such perforated steel floor materials, there is a problem in that the corrosion resistance of the connection portion is reduced as described above.

SUMMARY OF THE INVENTION An object of the present invention is to provide a perforated steel flooring material which can be easily connected in the lateral direction on site and which does not cause a reduction in the corrosion resistance of the connection portion, and a method of using the same.

[0008]

In order to achieve the above-mentioned object, a perforated steel flooring material of the present invention is made of a plated C-shaped steel material, and has a flat portion sandwiched between both side portions. A plurality of slit holes extending in the lateral width direction are provided in parallel at a predetermined interval in the longitudinal direction, and a plurality of through holes penetrating the side surface portions are provided at predetermined intervals in the longitudinal direction on both side surface portions. It is a thing.

The method of using the perforated steel flooring material of the present invention is as follows.

The perforated steel flooring material of the present invention is arranged side by side in the lateral width direction, and the side portions of adjacent perforated steel flooring materials are connected by a connecting member inserted through a through hole in the side surface portion.

[0011] On one or both sides of the perforated steel flooring material of the present invention, a width adjusting member made of a C-shaped steel material is arranged, and the side portions of the perforated steel flooring material and the width adjusting material are penetrated by the side portions. The connection is made by a connecting member inserted into the hole.

[0012] The perforated steel flooring material of the present invention is arranged side by side in the lateral width direction, a reinforcing material is disposed between the side portions of adjacent perforated steel flooring materials, and the side portions are sandwiched by the reinforcing material. To
The connection is made by a connecting member inserted into the through hole in the side surface.

The perforated steel flooring material of the present invention is arranged side by side in the width direction, and a spacer is provided between side portions of adjacent perforated steel flooring materials for adjusting the width, improving ventilation, and improving the lighting efficiency. Then, the side portions are connected to each other by a connecting member inserted through a through hole in the side portion with the spacer interposed therebetween.

According to these methods of use, perforated steel flooring materials that have been separately plated at a factory, or perforated steel flooring materials and a width adjusting material, a reinforcing material, and a spacer are welded at a construction site. Without using a connecting member such as a bolt that utilizes a through hole in the side surface, the connection can be made extremely easily, and a reduction in the corrosion resistance of the connection can be prevented.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment of the present invention. In the present embodiment, a plurality of perforated steel floor members 10, 10 are connected in the width direction.

Each perforated steel flooring 10 is made of a C-shaped steel which has been subjected to a hot-dip galvanizing process. Specifically, the belt-shaped flat portion 11, the side portions 12, 12 extending at right angles from the side edges of the flat portion 11 to the back surface, and the right angles inward from the lower edges of the side portions 12, 12. Extending flange portions 13, 13;
And web portions 14 extending at right angles from the respective edges of the flange portions 13 to the surface side.

In the flat portion 11 of the perforated steel flooring 10, a number of slit holes 11a, 11a,... Extending in the width direction are provided in parallel at predetermined intervals in the longitudinal direction. A large number of through-holes 12a, 12a,... Penetrating each side surface portion 12 in the plate thickness direction are provided at predetermined intervals in the longitudinal direction. Through holes 12a, 12a ...
Is a circular bolt hole through which the bolt 20 is inserted, and is formed at a position corresponding to the slit holes 11a.

A plurality of perforated steel flooring materials 10 are arranged side by side at the construction site in the width direction, and adjacent perforated steel flooring materials 1
A predetermined number of bolts 2 having the side surfaces 12 and 12 of 0 and 10 passed through the corresponding through holes 12a and 12a, respectively.
It is integrated by connecting at 0, 20,. The integrated perforated steel flooring material 10 is wrapped around the front and rear receiving beams 30, and both ends of the specific perforated steel flooring material 10 are attached to the front and rear receiving beams 30 with dedicated fasteners 40. Fixed to

In this embodiment, a plurality of perforated steel flooring materials 1 are used.
0, 10. Are connected in the width direction, so that the load applied to the specific perforated steel flooring 10 is reduced to the other perforated steel flooring 1.
0,10. For this reason, the bending of the perforated steel flooring 10 to which the load is applied is suppressed. By fixing the specific perforated steel floor material 10 to the receiving beam 30 with the fastener 40, the other perforated steel floor materials 10, 10 are fixed to the receiving beam 30 without the fastener. The number of used 40 is reduced.

Further, the operation of connecting a plurality of perforated steel floor members 10, 10 in the lateral width direction can be easily performed on site using the bolts 20. A predetermined plating process is applied to the connecting portions of the adjacent perforated steel flooring materials 10 and 10 in advance, and this plating is not destroyed even in the connecting operation, so that a reduction in the corrosion resistance of the connecting portions is prevented.

FIG. 2 shows a second embodiment of the present invention. In this embodiment, a width adjusting member 50 is connected to one side of the perforated steel flooring 10.

The width adjusting member 50 is a so-called accessory that is separately manufactured according to the required width, and includes a flat portion 51 and
Side portions 52, 52 extending at right angles from both side edges of the flat portion 51 to the back surface, a flange portion 53 extending at right angles inward from a lower edge portion of the outer side portion 52, and an end of the flange portion 53. And a web portion 54 extending at right angles from the edge to the surface side. The inner side surface portion 52 is provided with a large number of through holes 52a, 52a,... Penetrating the side surface portion 52 in the thickness direction at predetermined intervals in the longitudinal direction. Through holes 52a, 52a
Is a circular bolt hole through which the bolt 20 is inserted;
It is formed at a position corresponding to the slit holes 11a of the perforated steel flooring 10. The width adjusting member 50 has been subjected to a hot-dip galvanizing process at a factory.

In the present embodiment, the width adjusting material 50 manufactured in the factory is carried into the construction site, and is arranged on the side of the perforated steel flooring material 10. Bolts 20, 20 passed through the through holes 12a, 52a
By connecting with each other, both can be easily integrated on site. In addition, a reduction in the corrosion resistance of the connecting portion is also prevented.

FIG. 3 shows a third embodiment of the present invention. In the present embodiment, a plurality of perforated steel floor materials 10, 10,... Are connected in the width direction, and adjacent perforated steel floor materials 10, 10,.
A reinforcing member 60 is interposed between the two.

In this case, the reinforcing material 60 is made of the perforated steel floor material 10.
It is made of a taller L-shaped cross section and has a width adjusting material
Like 0, it is manufactured at the factory and has undergone a galvanizing process. In the vertical portion 61 of the reinforcing member 60, a large number of through holes 61a, 61a,... Penetrating the vertical portion in the thickness direction are provided at predetermined intervals in the longitudinal direction. Through holes 61a, 6
1a... Are circular bolt holes through which the bolts 20 are inserted, and are slit holes 11a, 11a.
Are formed at the positions corresponding to.

In the present embodiment, a reinforcing material 60 manufactured in a factory is carried into a construction site, and a plurality of perforated steel floor materials 10, 10 are arranged in the width direction with the reinforcing material 60 interposed therebetween. Reinforcement 60
Are sandwiched therebetween, and adjacent perforated steel floor materials 10, 10
Side portions 12 of the corresponding through holes 12a, 6
By connecting with a plurality of bolts 20, 20,... Passing through 1a, 12a, both are integrated.

By connecting a plurality of perforated steel floor members 10, 10 in the width direction with the reinforcing member 60 interposed therebetween, the rigidity is greatly improved, and it is possible to cope with a large load and a long span. Becomes In addition, the connecting operation can be easily performed on site, and a reduction in the corrosion resistance of the connecting portion can be prevented. As the reinforcing member 60, a flat bar or the like that has been subjected to a hot-dip galvanizing process can be used.

FIG. 4 shows a fourth embodiment of the present invention. In the present embodiment, a plurality of perforated steel floor materials 10, 10,... Are connected in the width direction, and adjacent perforated steel floor materials 10, 10,.
, A plurality of spacers 70 are interposed therebetween.

The spacer 70 is a block made of metal or resin and has a predetermined thickness, and has a through hole 71 penetrating in the thickness direction. The through hole 71 is a circular bolt hole into which the bolt 20 is inserted. Then, this spacer 70
To the side portions 12,1 of the adjacent perforated steel flooring 10,10.
2 are arranged at a predetermined interval in the longitudinal direction, and in this state, the side surfaces 12, 12 are connected to the corresponding through holes 12 a, 71, 1.
It connects with the bolt 20 which passed through 2a. As a result, the plurality of perforated steel floor members 10 are connected in the width direction, and the side surfaces 12, 10 of the adjacent perforated steel floor members 10, 10 are connected.
A plurality of spacers 70 are fixed between 12.

As a method of applying the perforated steel flooring 10, there is a case where a plurality of perforated steel flooring 10, 10 are arranged in parallel in the width direction with a predetermined gap. In this case, the gap, that is, the side portions 12, 12 of the adjacent perforated steel flooring 10, 10, are provided.
By fixing with the spacer 70 interposed therebetween, a stable floor is formed. Further, the interposition of the spacer 70 allows the width to be adjusted. Furthermore, the presence of the perforated steel flooring 10, 10
Since there is a gap between them, the aperture ratio increases, and ventilation and lighting efficiency can be improved.

The through-holes 12a formed in the side surfaces 12 of the perforated steel flooring 10 are provided with the flat portions 11 in the above embodiment.
Are provided at the same pitch as the slit holes 11a, 11a,.
Double pitch or triple pitch may be used, and the pitch and position may be changed as appropriate. Also for the width adjusting material 50, the reinforcing material 60, and the spacer 70, the pitch of the through holes is not required to be the same as that of the slit hole 11a.
It can be appropriately changed to double or triple.

The bolts 20 are used as connecting members for connecting the side portions 12, 12 of the adjacent perforated steel floor members 10, 10, but rivets or the like may be used, and the through holes 12a, 1
The type is not particularly limited as long as the side portions 12, 12 can be connected to each other using 2a. Further, it is not necessary to use the bolts 20 and the like for all the through holes 12a, 12a,.

[0034]

As described above, in the perforated steel flooring material of the present invention, a plurality of through-holes penetrating the side portions are provided at predetermined intervals in the side portions on both sides sandwiching the flat portion. By providing, it can be easily connected in the width direction on site, and
It is possible to prevent a decrease in the corrosion resistance of the connecting portion.

The method of using a perforated steel flooring material according to the present invention is such that the perforated steel flooring materials are arranged side by side in the width direction, and the side portions of adjacent perforated steel flooring materials are connected to each other. By connecting with a connecting member passing through the through hole, the bending of the perforated steel flooring material can be suppressed, and the number of fasteners used can be reduced.

Further, a width adjusting member made of a C-shaped steel material is disposed on one or both sides of the perforated steel floor material, and the side portions of the perforated steel floor material and the width adjusting material are penetrated by the side portions. By connecting with a connecting member passing through the hole, both can be easily integrated on site, and a reduction in the corrosion resistance of the connecting portion can be prevented.

Further, the perforated steel floor members are arranged in parallel in the lateral width direction, and a reinforcing member is disposed between the side portions of the adjacent perforated steel floor members. Are connected by a connecting member passing through a through hole in the side surface portion, thereby enabling a great improvement in rigidity, and supporting a large load and a long span.

Further, the perforated steel flooring materials are arranged in parallel in the width direction, and a plurality of spacers are arranged between the side surface portions of adjacent perforated steel flooring materials. Are connected by a connecting member passing through the through hole in the side surface portion, so that a stable floor can be formed when a plurality of perforated steel floor materials are arranged side by side in the width direction with a predetermined gap. In addition, the gap enables the adjustment of the width, the ventilation, and the lighting efficiency.

[Brief description of the drawings]

FIG. 1 is a perspective view of a perforated steel flooring material showing a first embodiment of the present invention.

FIG. 2 is a perspective view of a perforated steel flooring showing a second embodiment of the present invention.

FIG. 3 is a perspective view of a perforated steel flooring showing a third embodiment of the present invention.

FIG. 4 is a perspective view of a perforated steel flooring showing a fourth embodiment of the present invention.

FIG. 5 is a perspective view of a conventional perforated steel flooring.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Perforated steel flooring material 11 Flat part 11a Slit hole 12 Side part 12a Through hole 20 Bolt (coupling member) 30 Receiving beam 40 Clamp 50 Width adjusting material 51 Flat part 52 Side part 52a Through hole 60 Reinforcement material 61 Vertical part 61a Through hole 70 Spacer 71 Through hole

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) E04C 2/38 E04F 15/06 E04F 15/02 E04B 1/60 504E 15/06 E04C 2/50 F F term (Reference) 2E125 AA12 AA57 AA58 AB02 AC15 AD01 AD06 AE13 AG04 AG08 AG12 AG31 AG59 BD01 BE05 BF01 CA05 EA26 EA27 EB11 2E162 CB03 CB14

Claims (5)

[Claims] 1. It is made of a plated C-shaped steel material,
A plurality of slit holes extending in the width direction are provided in parallel at predetermined intervals in the longitudinal direction in a plane portion sandwiched between the side portions on both sides, and a plurality of through holes penetrating the side portions in the side portions on both sides. Are provided at predetermined intervals in the longitudinal direction. 2. A connecting member in which the perforated steel flooring according to claim 1 is arranged side by side in the lateral width direction, and the side portions of the adjacent perforated steel flooring are inserted into through holes in the side surface. A method of using a perforated steel flooring, characterized in that the flooring is connected by: 3. A width adjusting member made of a C-shaped steel material is disposed on one side or both sides of the perforated steel flooring material according to claim 1, and the side surfaces of the perforated steel flooring material and the width adjusting material are connected to each other. A method of using a perforated steel flooring, characterized in that the flooring is connected by a connecting member inserted into a through hole in a side surface portion. 4. The perforated steel flooring material according to claim 1 is arranged in parallel in the width direction, and a reinforcing material is disposed between side portions of adjacent perforated steel flooring materials, and the reinforcing material is sandwiched between the perforated steel flooring materials. The method of using a perforated steel flooring, wherein the side portions are connected to each other by a connecting member inserted into a through hole in the side portion. 5. The perforated steel flooring according to claim 1 is arranged side by side in the width direction, a plurality of spacers are arranged between side portions of adjacent perforated steel flooring, and the spacers are sandwiched. The method of using a perforated steel flooring, wherein the side portions are connected to each other by a connecting member inserted into a through hole in the side portion.