JP2018141296A - Floor structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor structure in which a plurality of floor slabs are placed on beam materials arranged at an interval with each other, which secures horizontal plane rigidity by omitting a horizontal brace, and which has excellent economic efficiency as an attic space of a lower floor room can be utilized effectively.SOLUTION: A floor structure 1 of a building is constituted by placing a plurality of floor slabs 3 on two or more beam materials 2 which are arranged at an interval with each other. The floor structure of a building includes: a support metal fitting 4 in which one end side is fixed to the beam material 2 and the other end side protrudes further in the other beam material 2 direction than the beam material 2; and a woody surface material 5 having an upper surface which becomes substantially the same surface as an upper surface of the beam material 2 by being supported by the support metal fitting 4 in an inner part surrounded with the beam materials 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a floor structure in which a plurality of floor slabs are mounted on beam members that are spaced apart from each other, and relates to a floor structure that can be applied mainly to a steel frame structure building.

  In recent years, the “Law Concerning the Promotion of the Use of Wood in Public Buildings” has been enforced, and the promotion of the use of wood for buildings has been encouraged as a national policy. The use of timber is also increasing in private buildings, and in particular, wood boards manufactured from wood waste such as building demolition materials are expected to be further promoted due to their contribution to the environment and their excellent economic efficiency. Yes.

  Conventionally, in a steel frame structure building, a floor structure is known in which a long concrete floor slab is mounted on beam members arranged at a distance from each other, and ends are fixed with metal fittings or the like. . In such a floor structure, the floor slab usually bears the bending rigidity, and the horizontal rigidity is often supplemented by a horizontal brace installed between the beam members. However, horizontal braces are generally installed in the lower and middle parts of the beam material that supports the floor slab so as to form an X shape in plan view, so that piping and wiring work performed in the ceiling space of the lower floor room It was often an obstacle. Therefore, a floor structure has been proposed in which horizontal braces can be omitted while securing sufficient horizontal plane rigidity.

  For example, Patent Document 1 proposes a floor structure that ensures horizontal plane rigidity by installing a stiffening surface material formed of a steel plate between a floor slab and a floor beam instead of a horizontal brace. In this invention, a stiffening surface material having a size (about 2000 mm × about 4000 mm) according to the span of the beam material is mounted on the upper portion of the beam material. Moreover, the floor slab installation part and the non-floor slab installation part are provided in the stiffening surface material, and the floor slab is arranged in the floor slab installation part so as to be separated from each other, thereby improving the sound insulation performance of the floor structure.

  Further, Patent Document 2 describes that a wooden panel is installed at the lower part of a beam member to improve sound insulation performance and to ensure horizontal plane rigidity by the wooden panel. In the present invention, it is disclosed that a firewood material can be omitted by installing a wood panel.

JP2016-33299A JP 2003-96963 A

  However, although the horizontal brace can be omitted in the invention of Patent Document 1, the work of installing and adjusting the position of a steel stiffening face material having a weight matched to the span of the beam material in a predetermined place is large for the installer. There is a risk that the workability will be reduced due to the burden. In addition, because the adjacent floor slabs are spaced apart from each other by a predetermined distance, the allocation to the stiffening surface material becomes complicated and takes time and work, and the allocation of the floor slab restricts the beam span and reduces the degree of design freedom. there is a possibility.

  Moreover, although patent document 2 can ensure horizontal-plane rigidity by using a wood system panel like a particle board, since a wood system panel is installed in the lower part of a beam material, it will become an obstacle of piping and wiring work of a lower floor. . Furthermore, since the space between the beams is blocked and a sufficient space behind the ceiling cannot be secured, the ceiling height of the lower floor room must be lowered when installing air conditioning equipment, etc. The height needs to be higher than usual, which may result in a very uneconomic structure. Moreover, in this invention, since the edge part of the wooden system panel is received with the beam material, you have to install a beam for every wooden system panel each time. Therefore, when using a standard-sized wood panel generally used at a construction site, there is a concern about an increase in construction cost due to an increase in beams.

  Therefore, the present invention has been made in view of the above-described problems, and is a floor structure in which a plurality of floor slabs are mounted on beam members that are spaced apart from each other, and a horizontal brace is omitted. An object of the present invention is to provide an economical floor structure that ensures horizontal rigidity and can effectively use the ceiling space of the lower floor room.

  The floor structure of a building according to the present invention is a floor structure of a building constructed by mounting a plurality of floor slabs on two or more beam members that are spaced apart from each other, and one end side is fixed to the beam member. And the other end side has a support fitting projecting in the direction of the other beam member from the beam member, and an upper surface which is supported by the support member and is substantially flush with the upper surface of the beam member inside the beam member. And a wood-based face material.

  In the floor structure of a building according to the present invention, the beam member includes a web and a flange protruding in a direction perpendicular to the web from both side ends in the width direction of the web, And one end side fixed to the flange includes a flat plate-shaped fixing portion, and the other end side protruding from the beam member includes a flat plate-shaped receiving portion that extends from the fixing portion and supports the wood-based plate material. It is characterized by that.

  In the floor structure of a building according to the present invention, the fixing portion of the support metal fitting is formed with an insertion hole that is inserted into a bolt that is fixed by protruding from one flange toward the other flange, and is fastened with a nut. It is characterized by that.

  The floor structure of a building according to the present invention is characterized in that the wooden board members are connected by a flat connecting plate straddling the edges of the wooden board members.

  The floor structure of a building according to the present invention is characterized in that the wooden board is installed with an interval from the adjacent wooden board.

  The floor structure of a building according to the present invention is characterized in that the insertion hole is a loose hole elongated in a direction in which the receiving portion protrudes.

  According to the floor structure of the building of the present invention, the wood-based face material is supported at both ends by the support fittings fixed to the beam material in the inside surrounded by the beam material. Horizontal plane rigidity can be maintained, and a floor structure excellent in workability and economy can be constructed. In addition, the wood-based face material is supported by the beam material so that the upper surface is substantially flush with the upper surface of the beam material by the support bracket, so that the ceiling space on the lower floor can be secured sufficiently. The wiring work can be easily performed and the ceiling space can be used effectively.

  According to the floor structure of the building of the present invention, the beam material has a web and a flange, and the wooden surface material is supported by the receiving portion of the support metal member fixed to the beam material. The material can be joined to steel beams such as H-shaped steel and channel steel. Therefore, the horizontal plane rigidity can be maintained by a light and inexpensive wood-based face material instead of the horizontal brace used in the conventional steel frame structure, and the workability can be improved by omitting the mounting of the horizontal brace. .

  According to the floor structure of the building of the present invention, the fixing portion of the support bracket forms an insertion hole that is fixed by a nut through the bolt provided on the flange of the beam member. Place the direction along the longitudinal direction of the flange so that it does not protrude from the flange, and when supporting the wooden surface material, rotate the support bracket so that the receiving portion protrudes from the flange, so that the wooden surface A material can be placed. Therefore, when carrying a beam material, a support metal fitting does not become obstructive, and can carry in a beam material on-site without trouble.

  According to the floor structure of the building of the present invention, the wood-based face material can be connected by a flat connecting plate straddling the edges of the wood-based face materials. There is no need to provide a small beam for supporting the face material, and a floor structure with excellent economic efficiency can be constructed.

  According to the floor structure of the building of the present invention, the wood-based face material is installed with a gap from the adjacent wood-based face material, so that construction can be performed while absorbing construction errors at various places.

  According to the floor structure of the building of the present invention, the insertion hole is a loose hole elongated in the direction in which the receiving portion protrudes. Therefore, when installing the wooden surface material in the receiving portion, the positions of the wooden surface material and the receiving portion are determined. Fine adjustments can be made according to the situation, and construction can be performed while absorbing construction errors at various locations. Further, even if the beam material and the wood-based face material are different materials and have different expansion rates, the beam material and the wood-based face material can be prevented from interfering with each other and being damaged by being separated from each other.

Sectional view showing the floor structure of a building The disassembled perspective view which shows the floor structure of a building. The perspective view which shows a support metal fitting. The cross-sectional exploded view which expanded the junction part of the beam material which has a welding bolt in a flange, a floor slab, and a wood type surface material. The cross-sectional exploded view which expanded the junction part of a beam material, a floor slab, and a wooden system surface material in the case of installing a bolt in a flange. The cross-sectional exploded view which expanded the junction part of a beam material, a floor slab, and a wood type surface material in the case of installing a bolt in a web. The perspective view which shows the installation condition to the beam material of a support metal fitting. The perspective view which shows the condition which installs the support metal fitting of another embodiment in a beam material. Sectional drawing which shows the condition which installs a support metal fitting in the cross-sectional view rectangular beam material.

  Hereinafter, the best embodiment of the building floor structure 1 will be described with reference to the drawings. The building floor structure 1 is mainly applied to a steel frame structure building, but can also be used for a wooden frame structure or a structure in which a steel frame structure and a wooden structure are combined. Here, the case of a steel frame structure will be described.

  As shown in FIGS. 1 and 2, the building floor structure 1 is a building floor structure configured by mounting a plurality of floor slabs 3 on two or more beam members 2 arranged at intervals. And one end side is fixed to the beam member 2 and the other end side protrudes in the direction of the other beam member 2 from the beam member 2, and the beam is supported by the support member 4 inside the beam member 2. A wood-based face material 5 having an upper surface that is substantially flush with the upper surface of the material 2.

  As shown in FIG. 1, the beam member 2 is formed of H-shaped steel, and includes a web 2 a and a flange 2 b that protrudes in a direction perpendicular to the web 2 a from both ends in the width direction of the web 2 a. Further, as shown in FIG. 4, a welding bolt 2c for fixing the support metal fitting 4 is welded to one flange 2b on which the floor slab 3 is mounted, and protrudes toward the other flange 2b. . In addition, although the material of the beam member 2 is described as an H-shaped steel here, a grooved steel having a web and a flange may be used.

  As shown in FIGS. 1 to 3, the floor slab 3 is a flat floor material that is placed on the beam members 2 that are arranged with a space therebetween. The material of the floor slab 3 is not particularly limited, but a long flooring material such as a lightweight cellular concrete plate, an extruded cement plate, or a precast concrete plate can be used. In addition, a floor base material and interior finishing material (not shown) can be installed on the upper portion of the floor slab 3.

  As shown in FIGS. 1 and 3, the support metal fitting 4 is a flat metal fitting formed in a substantially rectangular shape used for joining the beam member 2 and the wood-based face material 5. The support metal fitting 4 has a fixed portion 4 a fixed to the beam member 2 and a receiving portion 4 b that extends from the fixed portion 4 a and receives the wood-based face material 5.

  As shown in FIGS. 3 and 4, the fixing portion 4 a is provided with an insertion hole 4 c for inserting a welding bolt 2 c provided in the beam member 2 at the center in the width direction of the fixing portion 4 a. As shown in FIG. 3, the hole 4c is a loose hole elongated in the protruding direction of the receiving portion 4b. Moreover, the through-hole 4d which penetrates the fixing tool 5a for fixing the wood type surface material 5 is provided in the receiving part 4b in the center of the width direction of the receiving part 4b. And when the plate | board thickness of the flange 2b which mounts the floor slab 3 and the plate | board thickness of the wood type surface material 5 differ as shown in FIG. 4 etc., the side edge by the side of the fixing | fixed part 4a of the receiving part 4b is bent. A step portion 4e that absorbs the difference in plate thickness can be formed.

  As shown in FIGS. 1 and 3, the wood-based face material 5 is a flat plate having a rectangular shape in plan view supported by the beam material 2 via the support fitting 4. The material of the wood-based face material 5 is not particularly limited, but a wood board (particle board, medium density fiber board, etc.) or plywood formed from waste wood such as a building demolition material or a thinning material can be used. In particular, structural particle boards that have recently been approved for use as the main structural material of buildings due to technological development are preferred from the viewpoints of performance and economy. When using a structural particle board, it is possible to use a generally distributed standard size, for example, a thickness of 9 mm or more, a width of 900 mm or more, and a length of 1820 mm or more. it can.

  As shown in FIG.1 and FIG.2, the connection board 6 is arrange | positioned so that it may straddle the edge of mutually adjacent wood type | system | group surface materials 5, and it is the elongate which connects the wood type | system | group surface materials 5 with the fixing tool 5a. It is a board material. In the connecting plate 6, insertion holes 6 a for inserting the fixture 5 a are formed at regular intervals in the longitudinal direction at positions sandwiching the center in the width direction.

  Next, the construction procedure of the floor structure 1 will be described. First, as shown in FIG. 1, the support metal fitting 4 is installed in the beam material 2 arrange | positioned at intervals. Specifically, as shown in FIG. 4, the welding bolt 2 c is inserted into the insertion hole 4 c provided in the fixing portion 4 a, and the nut 2 d is screwed into the protruding welding bolt 2 c in the tightening direction to thereby support the bracket 4. Fix so that does not rotate. At this time, the receiving portion 4b is arranged so as to protrude from the flange 2b. In this way, as shown in FIG. 2, the support metal fittings 4 are installed at predetermined intervals in the longitudinal direction of the beam member 2.

  The support metal fitting 4 may be previously installed on the beam member 2 at the factory. By doing so, it is not necessary to attach the support metal fitting 4 to the beam material 2 every time when the wood-based face material 5 is installed on the beam material 2, and the workability can be improved.

  When mounting the support bracket 4 to the beam member 2 in advance in the factory, as shown in FIG. 7, the support bracket 4 is fixed to the beam 2 by fixing the receiving portion 4b along the longitudinal direction of the flange 2b. It can prevent the material 2 from being hindered in transportation. Then, after the beam material 2 carried in the field is arranged at a predetermined position, the nut 2d is rotated in the loosening direction to rotate the fixing part 4a, and the receiving part 4b is projected from the flange 2b and arranged at the predetermined position. . Subsequently, the nut 2d is rotated in the tightening direction to fix the support metal fitting 4 so as not to rotate, and as shown in FIG. 1, the wood-based face material 5 is placed on the receiving portion 4b. Therefore, since the position of the receiving portion 4b can be freely changed according to the situation, it is possible to smoothly perform from the carry-in of the beam member 2 to the installation of the wooden surface member 5 on the support bracket 4. In addition, when installing the support metal fitting 4 on the spot, or when the rotation function of the fixing | fixed part 4a is unnecessary, the shape of the support metal fitting 4 is not a strip shape as mentioned above, but as shown in FIG. A long shape having substantially the same length as the longitudinal length of the beam member 2 may be used.

  Next, as shown in FIG. 4, the wood-based face material 5 is placed on the receiving portion 4b protruding from the flange 2b, and is inserted into the through-hole 4d from below the receiving portion 4b. Then, it is screwed onto the wood-based face material 5 by a tightening rotary tool such as an electric screwdriver. At this time, as shown in FIG. 4, when there is a difference in the plate thickness between the flange 2b and the wood-based face material 5, the step difference between the two can be absorbed by the step 4e of the support bracket 4. The upper surface of the face material 5 can be made substantially flush. Further, as shown in FIG. 1, the wood-based face materials 5 are arranged so as to form a gap L <b> 1 between adjacent wood-based face materials 5. By providing the gap L1, it is possible to perform construction while absorbing construction errors at various places.

  Further, as described above, the insertion hole 4c of the fixing portion 4a is a loose hole that is elongated in the protruding direction of the receiving portion 4b, so that the support metal 4 can be finely adjusted in the width direction of the flange 2b. That is, as shown in FIG. 4, when the fixing portion 4a is moved in the direction of the receiving portion 4b, the gap L2 between the flange 2b and the wood-based face material 5 becomes wide, and the gap between the wood-based face materials 5 adjacent to each other. L1 becomes narrower. On the other hand, when the fixing portion 4a is moved in the web 2a direction, the gap L2 becomes narrower and the gap L1 becomes wider. Accordingly, the installer can install the wood-based face material 5 while absorbing construction errors at various places, and even if the beam material 2 and the wood-based face material 5 of different materials are expanded due to the influence of humidity and temperature, each other. It will not be damaged by interference.

  As shown in FIGS. 1 and 2, the connecting plate 6 is arranged so as to straddle the edges of the adjacent wood-based face materials 5, and a fixing tool 5 a such as a screw or a screw is inserted from below the connecting plate 6. Inserted into the hole 6a, the fixing tool 5a is screwed onto the wood-based face material 5 by a tightening rotary tool such as an electric screwdriver, and the wood-based face materials 5 are connected. Therefore, when a structural particle board having a standard size generally used, for example, a width of about 900 mm and a length of about 1820 mm is used as the wood-based face material 5, a plurality of wood-based face materials 5 are connected to the connecting plate 6. Since it can connect, it is not necessary to provide a receiving beam for every wooden surface material 5, the installation of the unnecessary beam material 2 can be reduced, and the building floor structure 1 excellent in economy can be constructed.

  Finally, as shown in FIG. 1, the floor slab 3 is installed on the flange 2b and fixed to the beam member 2 with a fixing bracket (not shown) to complete the floor structure 1 of the building.

  In addition, the fixing method to the beam material 2 of the wood type surface material 5 is not restricted only to said content. For example, as shown in FIG. 5, a notch 3a may be partially provided in the floor slab 3, and a bolt hole 2d into which the bolt 21 can be inserted may be formed in the flange 2b. The construction procedure after the bolt 21 is attached to the flange 2b can be the same as described above.

Moreover, in FIG. 6, the bolt hole 2e which inserts the volt | bolt 21 in the web 2a is formed.
In this case, a long channel steel is used as the support metal fitting 7, and one flange portion of the channel steel is used as the fixed portion 7a and the web portion of the channel steel as the receiving portion 7b. Moreover, the fixing | fixed part 7a forms the penetration hole 7c which inserts the volt | bolt 21 in the center of the width direction, and the receiving part 7b is a position which adjoins the flange part on the opposite side to the flange part which forms the fixing | fixed part 7a. In addition, a through hole 7d is formed. Further, the insertion hole 7c is a loose hole elongated in the width direction of the web 2a.

  The construction procedure in the case of FIG. 6 is as follows. First, the bolt 21 is connected to the bolt hole 2e of the web 2a and the insertion hole 7c of the fixing portion 7a, and the protruding bolt 21 is screwed to the nut 2d. Fix to 2. At this time, the position of the fixing portion 7a is adjusted in the width direction of the web 2a so that the upper surface of the wooden surface material 5 and the upper surface of the flange 2b are flush with each other when the wooden surface material 5 is placed on the receiving portion 7b. Then, the fixing portion 7a is fixed to the web 2a. Then, the wood-based face material 5 is placed on the receiving portion 7b so as to form a gap L2 with a gap from the flange 2b, and is inserted into the through-hole 7d from below the receiving portion 7b for tightening. Screwed onto the wood-based face material 5 with a rotary tool. Finally, the floor slab 3 is mounted on the flange 2b and fixed to the beam member 2 with a metal fitting (not shown) to complete the floor structure 1 of the building.

  In addition, when the beam member 2 has a rectangular shape in cross section such as a steel pipe or a laminated member, as shown in FIG. 9, a wooden surface material is used by using a support fitting 7 formed of a grooved steel or an L-shaped angle. 5 can be fixed to the beam member 2.

  The floor structure thus formed allows the floor slab 3 to bear bending rigidity, and allows the lightweight and inexpensive wood-based face material 5 to bear horizontal plane rigidity. A floor structure 1 can be constructed. Further, since the wood-based face material 5 is supported by the beam material 2 so that the upper surface of the wood-based face material 5 is substantially flush with the upper surface of the beam material 2, a sufficient space behind the ceiling of the lower floor is secured. It is possible to carry out piping and wiring work on the lower floor smoothly. As a result, the ceiling space of the lower floor room is increased, and the heat insulation performance of the lower floor room is improved by placing heat insulation material thicker than usual on the lower floor of the ceiling. Buildings with a high degree of design freedom can be realized.

In addition, structural particle boards and medium density fiberboards used as wood-based board materials have excellent sound insulation performance against lightweight impact sounds, so reducing the impact of sound on the lower floors by increasing the board thickness The effect can also be expected.

  Moreover, although the example used for a floor was demonstrated here, the floor structure 1 of a building can also be applied. For example, by installing the wood-based face material 5 on the beam material 2 in the shed, the horizontal plane rigidity of the shed can be ensured, and the horizontal brace can be omitted. Also in this case, as described above, effects such as facilitation of piping and wiring work in the ceiling and effective use of the space behind the ceiling can be obtained.

  Needless to say, the embodiment of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the scope of the idea of the present invention.

  The floor structure according to the present invention can be suitably used for, for example, a steel frame structure building.

DESCRIPTION OF SYMBOLS 1 Floor structure 2 Beam material 2a Web 2b Flange 3 Floor slab 4 Support metal fitting 4a Fixed part 4b Receiving part 4c Insertion hole 5 Wood surface material 6 Connection board

The floor structure of a building according to the present invention is a floor structure of a building constructed by mounting a plurality of floor slabs on the upper surfaces of two or more beam members that are spaced apart from each other, one end side of which is the beam member. The other end of the support bracket is fixed to the beam member and protrudes in the direction of the other beam member, and the inside of the beam member is surrounded by the beam member, and is placed on the support member from below the support member. A wooden surface material whose upper surface is substantially flush with the upper surface of the beam material, and the support metal fitting is fixed to the beam material below the upper surface of the beam material. A flat plate-shaped fixing portion on the side, and a flat plate-shaped receiving portion on the other end side that extends from the fixing portion and protrudes from the beam material and supports the wood-based face material .

In the building floor structure of the present invention, the beam member includes a web extending vertically and a flange projecting in a direction orthogonal to the web from both side ends in the width direction of the web. The support fitting is characterized in that the fixing portion is fixed to the lower surface of the upper flange .

Claims (6)

A floor structure of a building constructed by mounting a plurality of floor slabs on two or more beam members arranged at intervals from each other,
One end side is fixed to the beam material and the other end side protrudes in the direction of the other beam material than the beam material, and
A floor structure for a building, comprising: a wooden surface material having an upper surface which is supported by the support fitting and is substantially flush with an upper surface of the beam material inside the beam material. The beam member has a web and a flange protruding in a direction perpendicular to the web from both side ends in the width direction of the web,
The support metal fitting has a flat plate-like fixed portion at one end fixed to the flange, and a flat plate-shaped receiving portion that extends from the fixed portion at the other end protruding from the beam material and supports the wood-based plate material. The floor structure of a building according to claim 1, comprising:   The fixing portion of the support metal fitting is formed with an insertion hole that is inserted into a bolt that protrudes from one of the flanges in the direction of the other flange and is fixed with a nut. The building floor structure described.   The floor structure of a building according to claim 1 or 2, wherein the wood-based board members are connected by a plate-like connecting plate straddling end edges of the wooden board members.   3. The building floor structure according to claim 1, wherein the wooden board is installed at an interval from the adjacent wooden board. 4.   The floor structure of a building according to claim 3, wherein the insertion hole is a loose hole that is elongated in a direction in which the receiving portion protrudes.

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