JPH073102B2 - Surface structure of building and its base material - Google Patents

Description

TECHNICAL FIELD The present invention relates to a surface structure that forms a floor surface or a roof surface of a building with concrete and a base material used for the structure.

[Conventional technology]

Conventionally, a surface structure of this type is known as shown in FIG.

This is a concrete floor structure that uses a metal deck plate (10) as a base material, and has flat parts (3) formed at both ends of a deck plate (10) consisting of a face plate (1) and a reinforcing part (2). The floor surface of the building is constructed by supporting and fixing it on the beam member (6) made of H-shaped steel, etc., arranging the reinforcing bars (7) on the deck plate (10) and then placing concrete (8). There is.

The deck plate (10) is made of a metal plate such as a galvanized steel plate, and the width direction of the back surface of the face plate (1) having a flat surface by bending the metal plate as shown in FIGS. 15 and 16. Reinforcing parts (2) (lower ribs) along the longitudinal direction are formed in a plurality of locations in an isosceles triangular closed cross-section. A flat portion (3) is formed at both ends by crushing a part of the reinforcing portion (2) by press working, and an engaging portion for connecting another deck plate adjacent to each other on both sides ( 4),
(5) is formed.

In the concrete floor structure using such a deck plate (10) as a base material, the rigidity of the floor surface is secured by the deck plate (10), so the thickness of the concrete layer can be reduced accordingly, and therefore the cost of the building There is an advantage that reduction and weight reduction are possible.

[Problems to be Solved by the Invention]

However, on the other hand, according to this structure, since the concrete layer is thin and the deck plate (10) which is the base material is made of a metal plate material, it is poor in vibration damping property. When applied as a floor structure, noise from the upper floor, such as the sound of pedestrians' shoes, penetrates the floor and reverberates downstairs, causing a problem such as a discomfort at a meeting or meeting at the lower floor.

In order to eliminate such a problem, the casting thickness of concrete (8) should be increased, but this will increase the weight of the floor surface, so it will be necessary to change the design of the columns. The construction cost will rise.

The present invention has been made in view of such conventional problems, and a surface structure of a building and a floor structure which can obtain a floor surface excellent in vibration damping property at low cost without causing an increase in weight and such a structure. It is an object of the present invention to provide a base material capable of easily constructing a surface structure.

[Means for Solving the Problems]

In order to achieve the above object, in the present invention, a construction comprising a base material made of a metal plate installed between beam members arranged at a predetermined interval, and a concrete layer cast on the upper surface of the base material. In the surface structure of an object, a buffer structure made of an elastic material is provided between the base material and the concrete layer to form a surface structure of a building.

Further, as a base material applied to the above-mentioned surface structure, a reinforcing portion serving as a lower rib is provided at a predetermined interval along the width direction on the lower surface of the substantially flat plate, and an elastic material is formed on the upper surface of the surface plate. Forming a buffer layer.

[Action]

In the surface structure of the present invention, since the buffer layer made of an elastic material is provided between the base material forming the basic structure such as the floor and the concrete to be placed on the base material, the surface side of the concrete faces the base material. The transmitted vibration is attenuated in the buffer layer. That is, vibrations from the upper and lower floors are blocked by the buffer layer, and a quiet indoor space is obtained. In this case, the buffer layer may be made of a mass-produced material such as rubber or resin, and since it is not necessary to increase the thickness of the concrete layer in order to enhance the vibration damping effect, the quietness in the room is improved. The rise in construction costs required for construction is minimized.

In addition, since the base material of the present invention has a buffer layer made of an elastic material formed on the upper surface of the face plate in advance, there is no need to install the buffer layer on the site when installing the floor surface, etc. By the same procedure, a floor structure and the like with excellent vibration damping effect can be obtained.

〔Example〕

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

FIG. 1 shows an example of a concrete floor to which the surface structure of the present invention is applied. In the figure, (6) is a beam member, (7) is a reinforcing bar,
(8) shows concrete, (10) shows a deck plate as a base material, (11) shows its face plate, and (12) shows a reinforcing portion which becomes a lower rib. The present invention has a basic structure as a concrete floor similar to the conventional structure shown in FIG. 14, but a buffer layer (20) made of an elastic material is provided between the deck plate (10) and the concrete (8). ) Is provided, which is a big difference.

The buffer layer (20) is made of a highly elastic material such as rubber or a highly damping material such as a synthetic resin, and is attached to the face plate (11) of the deck plate (10) with an adhesive on site during construction. It is laid by pasting with the use of, or is formed on the upper surface of the face plate (11) when the deck plate (10) is manufactured at the factory stage.

The buffer layer (20) is formed by pasting an elastic material previously formed in a sheet shape on the face plate (11) using an adhesive as described above, and also by thermosetting or fluidity that is cured by a chemical reaction. Alternatively, the elastic material may be formed by applying and curing the elastic material on the face plate (11). The forming method by coating is advantageous because the buffer layer (20) can be formed evenly on the surface of the face plate (11) when the face plate (11) having a complicated shape with many irregularities is used.

Next, some structural examples of the deck plate (10) suitable for the concrete floor structure having such a buffer layer (20) will be described.

The face plate (11) of the deck plate (10) shown in FIG.
It is a rectangular shape formed by bending a steel plate with a plate thickness of about 0.8 to 1.2 mm, and concave mounting parts (13) with depths equivalent to the approximate plate thickness are formed at multiple locations in the width direction of the back surface. It is formed at intervals. These attachment parts (13) are a set of two threads and are formed along the entire length of the face plate (11) in the longitudinal direction. In addition, between the pair of attachment portions (13) of the face plate (11) adjacent to each other, the upper rib (2
1) is formed to improve the rigidity of the face plate (11). Further, engaging portions (14) and (15) which are folded back inward in the width direction on the back surface side and the front surface side are formed at both end portions in the left-right direction of the face plate (11).

The reinforcing portion (12) is formed by bending a steel plate having a thickness similar to that of the face plate (11), and the both side plate portions (17) from both side edges of the bottom plate portion (16) toward the front surface side. Was raised,
The flange portion (18) is bent outward from both side edge portions of the both side plate portions (17). Both flange portions (18) are dimensioned according to the position and width at which they engage with the one set of mounting portions (13). The total length of the reinforcing part (12) is the face plate (11)
The flange portion (18) is fixed to the face plate (11) by spot welding or the like with the flange portion (18) placed on the mounting portion (13).

Both end portions of the reinforcing portion (12) are face plates (11) as described above.
The flat portion (19) is formed by being pressed into a flat state by the pressing work in a state of being attached to the upper surface of the beam member (6), which abuts against the upper surface of the beam member (6) as shown in FIG. Instead of forming the flat portion (19) by pressing as described above, both ends of the reinforcing portion (12) are located inside the front and rear end portions of the face plate (13) when attached to the mounting portion (13). The dimensions may be set as described above, and the face plate portion protruding from the end portion of the reinforcing portion (12) may be used as the flat portion. In this case, the reinforcement (1
Since both ends of 2) are open, it is desirable from the viewpoint of strength and aesthetics to provide a lid member (not shown) at the open portion to close it.

The cross-sectional shape of the reinforcing portion (12) may be a simple rectangular shape as shown in FIG. 3, but the width of the bottom plate portion (16) is larger than the base end spacing of both flange portions (18) as in this example. By making the trapezoid smaller, the workability when welding the flange portion (18) to the mounting portion (13) of the face plate (11) is improved. When the flat portion (19) is formed by compressing the end portion of the reinforcing portion (12) by press working, as shown in FIG. 4, the middle portion in the height direction of both side plate portions (17). By making the shape bent inward, buckling of the reinforcing portion (12) during press working can be facilitated and workability can be improved.

5 to 8 show another example of the shape of the reinforcing portion (12). As shown in FIG. 5, these are face plates (1) having a relatively wide single groove-shaped mounting portion (23) formed at a plurality of positions in the width direction.
Corresponding to 1), the reinforcing part (12) of FIG. 5 is a flange part formed by bending both side plate parts (25) standing up from the top of a circular closed cross-section part (24) at the upper edges thereof. (26) is formed, and the flange portion (26) is attached to the single groove-like mounting portion (23).
It is welded to. The reinforcing portion (12) shown in FIG. 6 is a modification of the one shown in FIG. 5, and has an isosceles triangular closed cross section (24) formed at the lower ends of both side plate portions (25). FIG. 7 shows the L-shaped cross section formed by bending the lower ends of both side plates (25) that are in close contact with each other at a right angle, and FIG. 8 stands up from the flat bottom plate (27). The both side plate parts (25) are brought close to each other at their upper ends, and the flange part (26) is bent outward from the adjacent parts to form an isosceles triangular closed cross-section.

As described above, the reinforcing portion (12) has various shapes and structures, and can be arbitrarily selected according to the strength, rigidity and aesthetics required of the deck plate (10).

On the other hand, the face plate (11) can also adopt various configurations as shown in FIGS. 9 to 11. The face plate (11) shown in FIG. 9 is basically the same as the one having the single groove-shaped mounting portion (13) shown in FIG. 5, but each mounting portion (1
3) differs in that the rigidity is increased by forming an upper rib (21) having a substantially inverted triangular cross section along the longitudinal direction. Further, the face plate (11) shown in FIG. 10 is formed with a pair of two ridges (28) projecting to the back surface and extending in the longitudinal direction, and an attaching portion (13) is formed between them. By doing so, the rigidity is also improved. Further, the one shown in FIG. 10 is based on the face plate (11) shown in FIG. 3 or 4 and is orthogonal to the mounting portion (13) between the mounting portions (13) adjacent to each other. A plurality of lateral upper ribs (29) are provided so as to project in the direction and are reinforced. It should be noted that the buffer layer (20) is provided on the upper surface of the face plate (11) having such a relatively large unevenness (see FIG. 1).
In order to form the above, it is preferable to apply a fluid elastic material as described above.

Further, since the various buffer layers (20) are placed on the beam member (6) such as a steel frame and fixed by welding, the portions contacting the beam member (6) are previously buffered. It is preferable to prevent the layer (20) from being formed, or to cut or peel off the layer (20) from the viewpoint of fire prevention, which often occurs during the welding operation.

Next, the procedure for constructing a concrete floor using the deck plate (10) as described above will be explained. First, the deck plate (10) which is the base material has the reinforcing portion (12) attached to the face plate (11). Are carried in to the construction site, and at the site, the parts that are adjacent to each other on the left and right are engaged with each other (14),
Connect as much as necessary through (15). Then the face plate (11)
Both end portions of the cover, that is, the end portion on the rear surface side that is flush with the flange portion (22) of the lid member (20) is placed on the beam member of the building, and then sheet-shaped rubber or the like is placed on the face plate (11). Is laid to form a buffer layer (20). Further, a reinforcing bar is arranged above it, both ends of the face plate (11) are sealed by appropriate means, and concrete is poured onto the face plate (11) to be integrated with the reinforcing bar. In this case, the deck plate (10) is left as a discard form in the building even after the concrete is hardened. As described above, when using the deck plate (10) with the buffer layer (20) formed in advance at the factory stage, it is not necessary to lay sheet rubber or the like on the site, so in this case The concrete floor can be constructed by the same procedure as the conventional one.

By the way, the deck plate (10) of each of the above-mentioned embodiments has a flat foundation surface in a state of being installed on the beam member (6) of the building by attaching the reinforcing portion (12) to the back surface of the face plate (11). However, the present invention is not limited to such a floor structure, and the present invention can also be applied to a structure as shown in FIGS. 12 and 13, for example. That is, in those shown in these figures, a corrugated plate-like deck plate (30) is installed on the beam member (6), and the upper surface of the corrugated plate-shaped deck plate (30) is made of an elastic material such as rubber. The floor surfaces of the reinforcing bars (7) and concrete (8) are formed with the buffer layer (20) sandwiched therebetween.

The surface structure of the present invention can be applied not only to the concrete floor as described above but also to a concrete roof.

〔The invention's effect〕

As described above, according to the surface structure of the present invention, since the buffer layer made of the elastic material is provided between the base material forming the basic structure such as the floor and the concrete to be placed thereon, Alternatively, vibration from the downstairs is blocked by the buffer layer, and a quiet indoor space is obtained.

Further, in the surface structure of the present invention, the elastic material forming the buffer layer can be inexpensive mass-produced products such as rubber or resin, while suppressing the thickness of the concrete layer by the amount that the damping effect can be obtained by the buffer layer. Therefore, the interior space can be quieted without increasing the construction cost.

On the other hand, according to the base material of the present invention, since the buffer layer made of the elastic material is previously formed on the upper surface of the face plate, it is possible to construct a concrete floor or the like by the same procedure as the conventional one. That is, it is not necessary to perform special work or processing to obtain the vibration damping effect, and therefore, good workability can be obtained and at the same time, the labor cost can be suppressed.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a concrete floor structure of a first embodiment of the present invention, FIG. 2 is an external perspective view of a deck plate (base material) thereof, and FIGS. It is a cross-sectional view of another example. 5 to 8 are cross-sectional views showing examples of shapes relating to the reinforcing portion of the deck plate applicable to the face structure of the present invention, and FIGS. 9 and 10 are cross-sectional views showing examples of shapes relating to the same face plate. FIG. 11 is an external perspective view showing an example of the shape of the face plate. Figures 12 and 13
The drawings are a cross-sectional view and a side cross-sectional view showing a concrete floor structure of another embodiment of the present invention. FIG. 14 is a side sectional view showing a concrete floor structure of a conventional example, and FIGS. 15 and 16 are an external perspective view and a lateral sectional view of a conventional deck plate. (1) ... face plate, (2) ... reinforcing portion, (3) ... flat portion, (4), (5) ... engaging portion, (6) ... beam member,
(7) …… Reinforcing bar, (8) …… Concrete, (10) ……
Deck plate, (11) …… face plate, (12) …… reinforcing part,
(13) …… Mounting part, (14), (15) …… Engaging part, (16)
…… Bottom plate, (17) …… Both sides, (18) …… Flange, (19) …… Flat, (20) …… Buffer layer.

Claims (6)

[Claims] 1. A surface structure of a building comprising a base material made of a metal plate, which is installed between beam members arranged at a predetermined interval, and a concrete layer cast on the upper surface of the base material. A plane structure of a building, wherein a buffer layer made of an elastic material is provided between the base material and the concrete layer. 2. A base material is such that reinforcing portions which are lower ribs are arranged at predetermined intervals along the width direction on the lower surface of a substantially flat plate, and a buffer layer made of an elastic material is applied or stuck on the upper surface of the face plate. The surface structure of the building according to claim 1, which is formed by wearing. 3. A reinforcing portion, which is a lower rib, is provided at a predetermined interval along the width direction on the lower surface of a face plate having a substantially flat plate shape, and a buffer layer made of an elastic material is formed on the upper surface of the face plate. A base material for the characteristic surface structure. 4. The base material for a surface structure according to claim 2, wherein the buffer layer is formed by pasting an elastic material formed in a sheet shape in advance on a face plate of the base material. 5. The base material for a surface structure according to claim 2, wherein the buffer layer is formed by applying and curing a fluid elastic material on a face plate. 6. The base material for a surface structure according to claim 3, wherein the buffer layer is formed excluding a portion which is placed on the steel frame and fixed by welding.