JPH10121634A - Floor or rood supporting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a construction cost by using a deck plate or a folding plate as a bent plate to support a floor or a roof and providing a supporting member with a length protruded from the width of a beam material to the outside on the beam material to support the bent plate. SOLUTION: A supporting member 3 to be protruded from the width of a beam material 1 to the outside in joined onto the beam material 1 including a H-section with welding and the mountain of a bent plate 2 including a deck plate and a folding plate is placed right on the supporting member 3. A floor material 4 is placed on the bent plate 2 and a self-drilling machine screw 5 is passed through the floor material 4, the mountain of the bent plate 2 and the supporting member 3 for screwing. The center of a floor, where no supporting member 3 exists, is also joined with the self-drilling machine screw 5 to prevent the warping of the floor material 4 and the bent plate 2, and the supporting member 3 is made thicker for vertical shearing proof stress. Horizontal shearing rigidity is thus greatly improved by the supporting member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for supporting a floor or a roof of a building.

[0002]

2. Description of the Related Art When a metal material is used as a structural member for supporting a floor or a roof, it is reasonable to use a bent plate having peaks and valleys, such as a deck plate or a folded plate having a large bending rigidity in an out-of-plane direction. is there. Conventionally, when these materials are laid on the frame of a building, that is, on a beam, in the case of a deck plate, for example, a valley is placed on the beam as disclosed in Japanese Utility Model Publication No. 21375/1992. What was joined,
In the case of a folded plate, a method of mounting a support metal such as a tight frame on a receiving beam to support a mountain portion of the folded plate is used. However, in any of these methods, the thickness of the floor or roofing material needs to be larger than the height of the bent plate, so that the floor height must be set high, and the material cost of the building is reduced. Become an increasing factor.

When a horizontal force such as a wind or an earthquake load acts on a building, it is necessary to design the building so that the floor or roof surface is not excessively sheared in the in-plane direction. When placing concrete on the floor or roof, there is no problem because the concrete slab has sufficient in-plane shear rigidity and strength. However, for relatively small buildings such as detached houses that do not use concrete slabs, it is necessary to attach a horizontal brace separately to the floor or roof surface as an in-plane shear resistance element, and the horizontal brace itself is required. In addition to the material cost, the processing cost of the beam member for attaching the horizontal brace and the horizontal brace joining operation cost at the building site are required.

[0004] In order to eliminate the horizontal brace which is a cause of the cost increase, it is conceivable to use a plywood or a particle board for a floor or a roof foundation as another resistance element against in-plane shearing force. However, in this case,
Rigidity must be ensured at the joint between the beam and the plate element such as plywood. In the case where the beam and the joist have a wooden structure, if the joining details of the beam and the joist are determined so that the plywood and the beam material adhere to each other, the rigidity of the joint can be ensured even by nailing.
On the other hand, in the case of a steel structure, when the thickness of the beam flange is small, joining with self-drilling screws is possible, but it is difficult when the thickness exceeds, for example, 3 mm. In addition, a structural material that supports the loading load is required under the plywood, and if a supporting structural member is interposed between the plywood and the beam, the rigidity of the joint decreases, and sufficient resistance to in-plane shearing force is exerted. It will be difficult to do.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and has a relatively small steel structure, and is used for supporting a floor or a roof. By reducing the thickness of the floor or roof material on the beams by devising the method of mounting the bent plate, the floor height of the building can be reduced without reducing the ceiling height, and the horizontal shear force acting on the floor or roof surface To provide a floor or roof support method that can omit horizontal braces by reliably transmitting a floor or roof surface to a beam member via a support member, and can reduce building manufacturing and construction costs. Aim.

[0006]

SUMMARY OF THE INVENTION The present invention uses a deck plate or a folded plate having ridges and valleys shorter than the interval between beams as a folded plate for supporting a floor or a roof, and projects outward from the width of the beam. A floor or roof supporting method, wherein a supporting member having such a length is mounted on the beam material to support the bent plate.

[0007] It is preferable that the supporting member has a height smaller than the peak height of the bent plate. Further, it is preferable to use a flat plate, a square steel pipe, a channel steel, or a corrugated plate as the support member. Further, a plurality of support members continuously arranged in the beam axis direction of the beam member may be mounted on the beam member via a connection plate, or may be provided on both sides in the width direction of the connection plate. A bent portion may be provided so as to face, and the inner rectangle of the bent portion may be slightly larger than the width of the beam material.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing a main part of one embodiment of the present invention, FIG. 2 shows the part, (a) is a partially cutaway plan view,
(b) is a front view as viewed in the direction of arrows AA, and (c) is a side view in the direction of arrows BB. FIGS. 3A and 3B show a main part of another embodiment of the present invention, wherein FIG. 3A is a front view, and FIG. FIGS. 4A and 4B are perspective views showing another example of the support member used in FIG. FIGS. 5A and 5B show a main part of another embodiment of the present invention, wherein FIG. 5A is a front view, FIG. 5B is a side view taken along the line DD, and FIG. 5C is a modified example of FIG. It is a side view.

First, in FIGS. 1 and 2, reference numeral 1 denotes a beam member such as an H-section steel, and reference numeral 2 denotes a bent plate having peaks and valleys such as a deck plate or a bent plate. Reference numeral 3 denotes a support member for supporting the bent plate 2, and its length L is a length protruding outside the half width of the beam 1, and its width W is the inner rectangular shape of the crest of the bent plate 2. The height (plate thickness) H is slightly narrower than the height h of the bent plate 2 and is a flat plate having a height smaller than the height h of the bent plate 2, and the mounting interval is the same as the pitch of the peaks of the bent plate 2. Reference numeral 4 denotes a floor material or a roof material, and the following description will be made with the floor material as a representative. 5
Is a self-drilling screw.

The construction procedure of the floor thus constructed will be described below. After the column and beam members have been assembled, the support member 3 is projected onto the beam member 1 by welding or the like so as to project outward from the beam width. After joining, the bent plate 2 is laid so that its peak is located directly above the support member 3. Further, the floor member 4 is laid, and the self-drilling screw 5 is screwed by penetrating the floor member 4, the crest portion of the bent plate 2, and the support member 3.

Here, if the support member 3 is manufactured to have a thickness of 3 mm or less, even if the thickness of the flange of the beam 1 exceeds 3 mm, the support member 3 can be attached to the flange of the beam 1. By joining by welding (or bolts), the support member 3, the bent plate 2, and the floor member 4 can be easily joined using a self-drilling screw. This saves the most material costs.

If the self-drilling screw 5 is used to join the center portion of the floor surface without the support member 3, the squeak noise caused by the bending of the floor member 4 and the bent plate 2 can be prevented. In addition, the shear strength in the vertical direction caused by the load can be dealt with by increasing the thickness of the support member 3. FIG. 3 shows an example in which a molding material is used as the support member 3 instead of a flat plate. That is,
As shown in FIG. 3 (a), a square steel pipe having a square cross section is used as the molding material 31, and bolts 6 are used to join the bottom plate of the molding material 31 and the beam material 1. Thereby, the shear strength in the vertical direction caused by the load can be improved without increasing the thickness of the support member. In addition, as this molding material 31,
It is not limited to the box material, but a channel steel 32 having a U-shaped cross section as shown in FIG. 4 (a) or peaks and valleys as shown in FIG. 4 (b) are alternately repeated. The corrugated plate 33 may be used.

FIGS. 5 (a) and 5 (b) show a molding material as a support member 3. FIG.
An example is shown in which a plurality of molding materials 31 are joined to a connecting plate 34 by using 31. This reduces the rotational deformation generated in the molding material 31 by joining the connecting plate 34 to the molding material 31,
This makes it possible to improve the shear rigidity in the horizontal direction. As shown in FIG. 5 (c), bent portions are provided on both sides of the connecting plate 34 below, and the inner rectangle of both bent portions is slightly larger than the width of the receiving beam. Plate 35
May be used. In this case, the rotational deformation of the molding material caused by the out-of-plane deformation of the connecting plate can be further reduced, so that the rigidity against the shearing force in the horizontal direction can be further increased.

Although the above embodiment shows an example of construction at a building site, even when a floor or a roof surface is panelized in a factory, the beam material is appropriately incorporated into the floor panel or the roof panel. It is needless to say that the present invention can be similarly applied by devising various measures.

[0015]

EXAMPLE In order to confirm the effect of improving rigidity against horizontal shearing force in the method of the present invention, a force test as shown in FIG. 6 was conducted. That is, as shown in FIGS. 6 (a) and 6 (b), a bent plate 2 having a thickness of 0.5 mm × a height of 100 mm is used for the bent plate 2, and a formed material 31 as a support member has a thickness of 2.3 mm. X width 75mm x height
A 45mm x 100mm square steel pipe was used. Floor material 4 was 15mm thick.
Was used. Then, the interval between the beam members 1 is set to 1.8 m, and the floor surface is constructed on the beam frame having the beam member length of 3.6 m using the self-drilling screws 5 and the bolts 6 as described above.
A load of P was applied from the horizontal direction so that shear deformation occurred in the floor surface.

For comparison, the bottom plate of the bent plate 2 as shown in FIG.
The test was conducted under the same conditions also in the case of the conventional method in which the bolts 6 were directly used for fastening. FIG. 7 shows the relationship between the obtained load P when the horizontal shear force was applied and the amount of deformation δ of the floor surface. Comparing the load when the shear deformation angle is 1/200, that is, δ = 9 mm, as the same amount of deformation, the conventional method is about 750 kgf, whereas the present method is 1970 kgf, which is about 2.6 times that of the horizontal shear. The rigidity is ensured, and its superiority is clear.

[0017]

As described above, according to the floor or roof support method of the present invention, since the support member is used for joining the beam member and the bent plate, the floor thickness on the beam or the roof is used. The thickness can be reduced, which allows the floor height to be reduced without lowering the ceiling height, while at the same time significantly increasing the horizontal shear stiffness of the floor or roof surface.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an embodiment of the present invention.

FIGS. 2A and 2B show a part of FIG. 1, wherein FIG. 2A is a partially cutaway plan view, FIG. 2B is a front view taken along the line AA, and FIG. is there.

FIG. 3 shows a main part of another embodiment of the present invention, in which (a)
Is a front view, and (b) is a side view taken along the line CC.

4 (a) and 4 (b) are perspective views showing another example of the support member used in FIG.

FIG. 5 shows a main part of another embodiment of the present invention, in which (a)
Is a front view, (b) is a side view taken on line D-D, and (c) is a side view showing a modification of (b).

6 (a) is a plan view, FIG. 6 (b) is a view taken in the direction of an arrow II, and FIG. 6 (c) is a view illustrating a horizontal shear force test method according to the present invention.
FIG.

FIG. 7 is a characteristic diagram showing the results of a horizontal shearing force test performed by the method of the present invention.

[Description of Signs] 1 Beam 2 Folding plate 3 Supporting member 4 Floor or roofing material 5 Self-drilling screw 6 Bolt 31 Molding material 32 Channel steel 33 Corrugated plate 34 Connecting plate 35 Connecting plate with bent portion

Claims (6)

[Claims] 1. A deck plate or folded plate having ridges and valleys shorter than the interval between beams as a folded plate for supporting a floor or a roof, and having a length protruding outward from the width of the beam. A method for supporting a floor or a roof, wherein a member is mounted on the beam material to support the bent plate. 2. The method according to claim 1, wherein the supporting member has a height smaller than a height of the bent plate. 3. The method according to claim 1, wherein a flat plate is used as the support member. 4. A method according to claim 1, wherein the supporting member is a square steel pipe or a channel steel whose material axis direction coincides with the material axis direction of the bent plate, or a corrugated plate in which peaks and valleys are alternately repeated. The method for supporting a floor or a roof according to claim 1, wherein: 5. The floor or roof according to claim 4, wherein a plurality of support members continuously arranged in the direction of the beam axis of the beam member are mounted on the beam member via a connecting plate. Support method. 6. A bent portion is provided on both sides in the width direction of the connecting plate so as to face downward, and the inner rectangle of the bent portion is slightly larger than the width of the beam. Item 5
The described floor or roof support method.