JP3800328B2 - Floor structure and floor forming method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
[0002]
[Prior art]
The present invention relates to a floor structure of a building such as a factory. In particular, the present invention relates to a floor structure suitable for buildings that are required to maintain high hygiene such as food factories and pharmaceutical factories.
[0003]
[Problems to be solved by the invention]
The performance of the painted floor depends greatly on the performance of the concrete base. That is, the defects of the concrete base significantly reduce the performance of the base of the coated floor. However, concrete base molding is not always easy.
[0004]
Furthermore, in factories and laboratories, the floor is exposed to acids, alkalis, and hot water from chemicals and detergents, and the floor is greatly damaged, deteriorated, or peeled off. In response to this, deformation and cracks occur, and the original performance of the floor deteriorates.
[0005]
On the other hand, a stainless steel floor is also known in which a stainless steel plate is laid out on a concrete base and laid while welding. This stainless steel floor is less deteriorated by acid, alkali or the like than the coated floor. However, since a stainless steel plate is attached to the underlying concrete, peeling, expansion, displacement and the like are likely to occur. Once peeling occurred, the repair work had to be extensive and forced to be more careful. Moreover, in order to drain water on the floor effectively, a slight water gradient that does not give a sense of incongruity or hindrance is required in use, but it has been difficult to accurately create such a water gradient. Furthermore, when all the adjacent stainless steel plates are welded together, distortion tends to occur, and it has been difficult to provide a floor with a uniform plane.
[0006]
The present invention has been made paying attention to such problems.
[0007]
[Means for Solving the Problems]
In the present invention, angle steel is combined and arranged in a lattice shape, concrete is embedded between the angle steels, the angle steel and the concrete form an integral structure, and the stainless steel plate is plug welded to the angle steel. The floor structure characterized by the above is provided.
[0008]
Further, the present invention is characterized in that the surface of the angle iron contacting the stainless steel plate is laid so as to have a predetermined gradient, and preferably the plug welds are provided at substantially equal intervals.
[0009]
Further, the angle steels are arranged at intervals of about 300 mm from the center line to form a lattice shape, and the plug welding is performed at intervals of about 300 mm.
[0010]
Furthermore, the thickness of the stainless steel plate is preferably between about 5 mm.
[0011]
Further, the stainless steel plate is supported by the concrete and the angle steel so that the stainless steel plate and the concrete are embedded in a lattice formed by combining the angle steels so that a gap is not substantially generated.
[0012]
In addition, a stainless steel plate is used as a baseboard and is welded to a stainless steel plate which is a floor plate, and is bent with a radius of about 50 mm.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0014]
1 is a perspective view in which angle irons constituting the floor structure of the present invention are installed on a slab floor, FIG. 2 is a perspective view of the floor structure of the present invention, and FIG. 3 is a line AA ′ in FIG. Sectional drawing seen from the side which followed is shown.
[0015]
As shown in FIG. 1, the floor structure 10 (see FIG. 2) of the present invention has a structure in which a plurality of angle steels 1 and 2 having substantially the same width are incorporated perpendicularly in the vertical and horizontal directions. Are joined to form a plurality of grids.
[0016]
The angle steels 1 and 2 are installed such that the surfaces 1a and 2a thereof are horizontal with respect to the slab floor 11 and form a fixed plane as a whole. Further, the angle steels 1 and 2 are supported by the support member 4 while being slightly raised from the slab floor 11.
[0017]
The inside of the lattice formed by the vertical and horizontal angle steels 1 and 2 (that is, the inside surrounded by the angle steels 1 and 2) P is almost up to one side 1a and 2a where the concrete 6 forms the upper surface of the angle steel. It is uniformly filled and solidified.
[0018]
A stainless steel plate 3 is placed on the angle steels 1 and 2 and the concrete 6. The stainless steel plate 3 is supported by the upper surfaces 1a and 1b of the angle steels 1 and 2 and the upper surface of the concrete 6 so that the stainless steel plate 3 can sufficiently withstand the pressure from above.
[0019]
Further, the stainless steel plate 3 is partly welded 7 with the upper surface 1a or 1b of the angle steels 1 and 2 that are in surface contact at substantially equal intervals, and fixed to the angle steel.
[0020]
FIG. 4 is a perspective view (FIG. 4 (a)) showing a combination of angle steels 1 and 2 for forming a lattice and a side view (FIG. 4 (b)) viewed from the direction of the arrow. The angle steels 1 and 2 are arranged orthogonal to each other in the direction of the inverted L shape.
[0021]
As is clear from FIG. 2, one angle steel 2 is arranged in parallel with each other at equal intervals and extends transversely so as to be elements of a plurality of lattices. The other angle steel 1 is disposed between the angle steels 2 adjacent in parallel so that one angle steel 1 becomes one element of the adjacent lattice.
[0022]
Each side 1a, 2a (hereinafter referred to as "upper surface" for supporting the stainless steel floor) of the angle steels 1, 2 forms a substantially continuous and flat surface. As apparent from FIG. 4, one longitudinal end 1 c of one angle steel 1 is welded to the first region 2 c on the side surface of the other angle steel 2. The other angle 1d of the one angle steel 1 is a second region 2a inside the L-shape of the other angle steel 2 and the first angle formed in the other direction of the angle iron 1. The notch region 1e is the third region 2e inside the L-shape of the other angle steel 2, and the second notch region 1f formed in the other end direction of the one angle steel 1 is the other Each of the fourth regions 2f of the L-shaped end adjacent to the upper surface 2a of the angle steel 2 is welded. The first and second cutout regions 1e are continuous at the portion where the top surfaces 1a and 2a of the angle steels 1 and 2 intersect each other when the angle steel 2 and the left and right angle steels 1 are joined. The dimensions are such that they form the same surface.
[0023]
As shown in FIGS. 5 and 2, the stainless steel plate 3 has a hole 3a provided for plug welding with the angle steel. A plurality of holes 3a are formed at substantially equal intervals according to the size of the repeated lattice pattern of the angle steels 1 and 2.
[0024]
In the illustrated example, the stainless steel plate 3 is just plug welded to the portion where the angle steels 1 and 2 intersect, and the stainless steel plate 3 is angled steel 1 so that the intersecting portion and the hole 3a substantially match. 2 is placed. When the stainless steel plate 3 is placed on the angle steels 1 and 2, the plug weld 7 is made on the upper surface 2 a of the angle steel 2 using the holes 3 a. In this example, the plug welding by the holes 3a is performed at the corners of the quadrilateral elements forming the lattice, but the central portion or other portions may be used.
[0025]
Since a stainless steel plate is usually produced in a roll shape, the width of the stainless steel plate used in the present floor structure is regulated by the roll width. Therefore, in order to lay the stainless steel plate on the floor, as shown in FIG. 6, butt welding 8 is performed in which the edges of adjacent stainless steel plates 3 are abutted and welded.
[0026]
As described above, the stainless steel plate 3 laid on the angle steels 1 and 2 is welded between adjacent plate edges (so-called joint portions), but distortion generated in the welding of the joint portions by the previous plug welding is suppressed as much as possible. Structure. Conversely, the dimensions of the quadrilateral of the lattice formed by the angle steels 1 and 2 and the arrangement of the holes 3a provided in the stainless steel plate (or the location of the plug weld) are selected so that no distortion occurs in the stainless steel plate 3 as a whole. To do.
[0027]
As shown in FIGS. 1 and 3, the support member 4 is partially welded to the angle steels 1 and 2. A hole is provided in the flat bottom portion of the support member 4, and the support member 4 is fixed to the slab floor 11 by driving a bolt 5 passed through the hole into the slab floor 11. In the fixed support member 4, the angle steels 1 and 2 are separated from the slab floor 11, and the gaps h1, h2, h3. . . The angle steels 1 and 2 are fixedly supported so that hn (see FIG. 3) is generated.
[0028]
The gaps h1, h2, h3. . . When hn (that is, the separation distance from the slab floor to the lower ends of the angle steels 1 and 2) has the same dimension throughout the slab floor, the surface of the stainless steel plate 3 of the floor structure is uniform with respect to the slab floor 11. Parallel to Therefore, when the slab floor 11 is horizontal, the floor surface (surface of the stainless steel plate) of the floor structure is horizontal.
[0029]
On the other hand, the gaps h1, h2, h3. . . By changing hn depending on the location, a predetermined slope can be given to the floor surface of the floor structure. That is, by adjusting the welding position of the support member to the angle steel, different gaps h1, h2, h3. . . hn is given. Usually, in a food factory or the like, it is said that a dry floor can be obtained with a water gradient of 1/100. This gradient is a gradient that improves drainage and does not cause a sense of incongruity and does not hinder the work. Therefore, the gaps h1, h2, h3. . . What is necessary is just to select hn suitably so that such a gradient may arise.
[0030]
The place where the support member 4 is provided does not necessarily need to be the center of the side of the quadrilateral element forming the grid, and it does not need to be provided on all of the grid. That is, if a desired floor can be finally formed, the support members 4 may be provided in a scattered manner on the entire floor.
[0031]
In the finally obtained floor, the concrete 6 surrounds the support member 4 as a whole and is embedded between the inside P (see FIG. 1) of the lattice and the angle steels 1 and 2 and the slab floor 11. Accordingly, the angle steels 1 and 2 themselves are firmly supported by the concrete, and the support member 4 does not substantially affect the strength of the floor.
[0032]
The floor structure according to the present invention can achieve a highly accurate floor gradient and can maintain a high strength of the floor surface itself. In the manufacturing process of the floor structure 10, when the concrete 6 is poured into the inner portion P surrounded by the lattice-shaped angle steels 1 and 2 as shown in FIG. It spreads from the gap of the slab floor 11 to the outside as a whole. And, when the concrete surface exceeds the gaps h1, h2,... Hn, the concrete itself has a viscosity, and therefore, in the interior P surrounded by the lattice shape, the upper surfaces 1a, 2a of each side of the angle steel are It is possible to pour concrete to fit the lowest side of it. With a water gradient of about 1/100, the difference between the upper surface 1a, 2a of the highest chevron steel and the upper surface 1a, 2a of the lowest chevron steel is small within one lattice, and there is substantially no gap. It can be said. Therefore, even if there is a water gradient, the fixed stainless steel floor on the top is firmly supported by the angle irons forming the lattice and the concrete surface embedded therein. If concrete with high fluidity is used, first, the gaps h1, h2,. . . After pouring the concrete to the height of hn and solidifying it into a solid or semi-solid, it is sufficient to fill the concrete again in each lattice.
[0033]
The corners of the floor are difficult to clean with conventional skirting boards because dust accumulates between the skirting boards and the floor. Therefore, in food factories and pharmaceutical factories that require a high degree of hygiene, it is likely to become a hotbed for expanding pollution. Therefore, as shown in FIG. 7, a base plate 9 made of the same material and having the same thickness as the floor plate made of stainless steel plate 3 is welded by butting the edges of each other, and the corners have a predetermined diameter (in this example, R50 mm), the dust is less likely to collect in the corners, and the portion can be easily cleaned and washed.
[0034]
【Example】
In practicing the present invention, an L-shaped 50 mm × 50 mm L-shaped SS400 chevron steel having a length of 6 mm was disposed so that a plurality of regular quadrangular lattices having a center-line spacing of 300 mm were formed.
[0035]
The support member 4 was made of an L-shaped SS400 steel material of 50 mm (length) x 50 mm (width) x 6 mm (thickness). And, in addition to the horizontal floor, the water gradient is 1/78, 1/100, and further, the range from 65 to 80 mm from the bottom surface of the stainless steel plate 3 from the slab floor 11 so as to form three kinds of floors. And welded to angle steels 1 and 2.
[0036]
As a floor plate, a stainless steel plate 3 of a size of about 1,200 mm × 2,400 mm in length and width of SUS304 stainless steel and a thickness of 5 mm was used.
[0037]
The holes 3a of the stainless steel plate 3 for plug welding were provided at 32 locations at regular intervals of approximately 300 mm. Then, the corners of the lattice formed by the angle steels 1 and 2 (that is, the intersecting portions of the angle steels 1 and 2) and the stainless steel plate 3 were plug welded at 32 locations through the holes 3 a of the stainless steel plate 3. Butt welding was performed between adjacent stainless steel plates 3. The portions of the plug weld and butt weld were cut and polished so that the surfaces finally became flat and the strength was improved.
[0038]
As a result, a stainless steel floor that is substantially flat and can sufficiently withstand the load of a forklift can be formed, and a desired water gradient can be provided with high accuracy, thereby providing a stable stainless steel floor with excellent drainage. It was.
[0039]
Also, as the baseboard, the stainless steel plate 9 that is the same material and the same thickness as the stainless steel plate 3 that is the floor board is welded to each other edge so that the stainless steel plate 9 that becomes such a baseboard is easy to clean and wash. It was vertically bent with a diameter of R50 and fixed to the wall surface.
[0040]
【The invention's effect】
As described above, angle steel is combined and arranged in a lattice shape, and concrete is embedded between the angle steels to form the angle steel and concrete as an integral structure, and the stainless steel plate and the angle steel are partially spaced at equal intervals. It was possible to provide a stainless steel floor that has sufficient strength and is not easily distorted.
[0041]
Furthermore, by raising the angle steel and the slab floor with the support member, it was possible to provide a stainless steel floor that has a desired high-accuracy water gradient and has no problem in strength.
[0042]
Also, as a baseboard for such a stainless steel floor, a plate made of the same material and the same thickness as the stainless steel plate is butt welded to the stainless steel floor and bent at a predetermined radius, so that the adhesion of dust is reduced and cleaning can be easily performed. It has become possible to provide a stainless steel floor that can be cleaned.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which angle steel is arranged on a slab floor.
FIG. 2 is a perspective view (partially transparent view) showing a floor structure according to the present invention.
FIG. 3 is a cross-sectional view of a floor structure according to the present invention.
FIG. 4 is a perspective view (a) and a side view (b) showing a structure of a combination of angle steels.
5 is a side view showing a hole 3a of the stainless steel plate 3. FIG.
FIG. 6 is a side view of the stainless steel plate 3 butt welded.
FIG. 7 is a side view showing a state where a stainless steel plate butt-welded from a stainless steel plate 3 as a floor plate is bent and used as a baseboard.
[Explanation of symbols]
1,2. . . 2. Yamagata steel . . Stainless steel plate 4. . . 4. Support member . . Bolt 6. . . Concrete 7. . . Plug welding8. . . 8. Butt welding . . Stainless steel board (baseboard)
10. . . Floor structure 11. . . Slab floor

Claims (16)

An angle steel is combined and arranged in a lattice shape, concrete is embedded between the angle steel, the angle steel and the concrete form an integral structure, and a stainless steel plate is plug welded to the angle steel. Floor structure. The floor structure according to claim 1, wherein the surface of the angle iron contacting the stainless steel plate is laid so as to be horizontal or have a predetermined gradient with respect to the slab floor. The floor structure according to claim 1, wherein the plug welds are provided at substantially equal intervals. The floor structure according to claim 1, wherein the angle steels are combined with each other at a distance of about 300 mm from the center line to form a lattice shape, and the plug weld is provided at the intersection of the angle steels. The floor structure according to claim 1, wherein the stainless plate has a thickness of about 5 mm. Concrete is embedded in the inside surrounded by the angle steel so that a gap is not substantially formed between the stainless steel plate and the concrete, and the stainless steel plate is substantially supported by the concrete and the angle steel. The floor structure according to claim 1. 2. The floor structure according to claim 1, wherein a baseboard made of a stainless steel plate is welded to a stainless steel plate which is a floor plate, and a corner is bent with a predetermined radius. The floor structure according to claim 7, wherein the predetermined radius is approximately 50 mm. A combination of angle steels arranged in a lattice, concrete is embedded between the angle steels to form an integral structure, and a stainless steel plate is placed on the angle steel and plug welded to the angle steel. Floor formation method. The floor forming method according to claim 9, wherein the angle steel is laid so that a surface thereof is parallel to the slab floor or has a predetermined gradient. The floor forming method according to claim 9, wherein the lattice-like interval is set to about 300 mm with a central line of the angle steel as a reference, and the plug welding is performed at an interval of about 300 mm. The floor forming method according to claim 9, wherein the plug welding is performed on the crossing portion of the angle iron or the central portion of the side of the lattice. The floor forming method according to claim 9, wherein the stainless plate has a thickness of about 5 mm. 10. The concrete according to claim 9, wherein concrete is embedded in the lattice so that a gap is not substantially formed between the stainless steel plate and the concrete, whereby the stainless steel plate can be supported by the concrete and the angle steel. Floor formation method. The floor forming method according to claim 9, wherein a stainless steel plate is used as a baseboard and is welded to a stainless steel plate which is a floor plate, and bending processing with a predetermined radius is performed. The floor forming method according to claim 15, wherein the predetermined radius is approximately 50 mm.

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