JP6347502B2 - Double floor structure and construction method - Google Patents

Description

The present invention relates to a double floor structure mainly employed in a house and a construction method thereof .

  In apartment houses represented by apartments, flooring with better hygiene than carpeting has been common for a long time, but in flooring, it is important to take sound insulation measures on the lower floor against floor impact noise generated on the upper floor. Therefore, in the building guidelines, sound insulation performance of L-45 for light impact sources and L-50 for heavy impact sources is recommended ("Sound insulation performance standards and design guidelines for buildings", Architectural Institute of Japan).

  Recently, in addition to the needs for comfortable living, higher sound insulation performance has been required, and a walking floor has been laid on a reinforced concrete slab (hereinafter referred to as RC slab) that exceeds 200 mm in thickness. Double floors are becoming standard.

  In constructing the walking floor on the RC slab, support legs are arranged on the RC slab at a predetermined pitch in two planes, and a base panel such as a particle board is placed on the support leg. It is common to lay floor panels and other floor panels in sequence to construct a walking floor. However, if the floor height cannot be increased on the building side, the double floor space above the RC slab should be kept as low as possible to reduce the ceiling height. It is necessary to secure it.

  In order to meet the above-mentioned demand, a double floor structure capable of lowering the floor has been proposed (Patent Document 1). According to the double floor structure described in the same document, the anti-vibration rubber and the anti-vibration rubber are extended. The support leg is configured with the support plate to which the support bolt is screwed, and the support plate is formed so that the central region to which the support bolt is screwed protrudes from the surrounding region surrounding it. If the support legs are arranged in the gap between the matching base panels and the base panel is placed on the peripheral area of the support plate, the base panel placement height can be lowered.

JP 2012-1915 A

  Here, in the above-mentioned double floor structure, it is necessary to secure a space for arranging the support legs at the place where the base panels are joined to each other. However, excessive shearing force and bending moment are generated in the finishing material and may be damaged. In order to avoid a situation in which a good walking feeling is impaired, the gap between the base panels must be set to about 12 mm or less. As a countermeasure, forming a notch in the longitudinal edge portion takes too much time and labor for the notch processing.

  Therefore, the double floor structure described in Patent Document 1 adopts a configuration in which the aspect ratio of the base panel is set to a square such as 1: 1 or 1: 1.5 or a ratio close thereto, and the corners are notched in a triangular shape. Has been.

  In this way, since each triangular cutout space is integrated at the joint location of the base panel and becomes a wider space, the support legs can be sufficiently installed, and the long side edges are As before, it can fit in a gap of about 12 mm or less.

  However, in such a double floor structure, a widely used 2 × 6 scale general-purpose panel cannot be used, so that it is costly to procure a base panel, and a corner notch is sufficient. In other words, there is no substitute for notching the base panel, and there is a problem that time and labor are burdened.

  In addition, in order to fix the base panel placed on the support plate to the support plate, it is necessary to screw a self-tapping screw from the upper surface of the base panel and screw it into the screw hole of the support plate. In the state where the operator is on it, the horizontal position of the support leg cannot be finely adjusted, and in some cases, the self-tapping screw must be screwed in many times, etc. There has also been a problem that it takes time to fix the base panel to the support plate.

The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a double floor structure capable of lowering the floor, excellent in economic efficiency, and easy to fix the base panel, and its construction method. To do.

In order to achieve the above object, a double floor structure according to the present invention has a double floor structure in which a walking floor is laid above the structural floor in a state of being separated from the structural floor as described in claim 1. In
A leg main body placed on the upper surface of the structural floor and formed of anti-vibration rubber, a height adjusting bolt extending from the top of the leg main body, and connected to cover the leg main body via the height adjusting bolt. A receiving member, and the receiving member is formed integrally with the cylindrical peripheral wall portion so as to close one end of the cylindrical peripheral wall portion formed so as to surround the leg main body in a state of being connected to the leg main body. A double floor comprising a top plate portion formed with a bolt hole into which the height adjusting bolt is screwed, and an annular projection extending from the outer peripheral surface in the vicinity of the other end of the cylindrical peripheral wall portion. Support legs,
A pedestal made of a wood-based material into which the receiving member of the support leg for the double floor is fitted so that the opening edge of the fitting opening formed in the vicinity of the center is received by the annular projection,
The pedestal is formed as a lowermost layer of the walking floor so that a space is formed between the longitudinal side edges facing each other and the vicinity of the head of the receiving member protruding from the fitting opening is positioned in the space. A base panel placed on top of
A stiffening panel laid on the base panel so as to straddle the spacing space ;
The cylindrical peripheral wall portion is configured such that its height is greater than the thickness of the pedestal .

In the double floor structure according to the present invention, a groove-like rib is formed along the direction from the bolt hole toward the annular protrusion, where the top plate portion and the cylindrical peripheral wall portion meet each other. Is.
In the double floor structure according to the present invention, a finishing material made of a solid material is laid as the uppermost layer of the walking floor on the stiffening panel, or a floor heating panel is laid on the stiffening panel. A finishing material made of solid wood or composite flooring is laid on the floor heating panel as the uppermost layer of the walking floor.
Moreover, the construction method of the double floor structure which concerns on this invention has set up the support leg for double floors as described in any one of Claim 1 thru | or 3 on the said structure floor as described in Claim 4. And supporting the pedestal so that the receiving member is fitted into the fitting opening and the annular protrusion receives the opening edge of the fitting opening. A spacing space is formed between the longitudinal side edges of the base panel facing each other, and the vicinity of the head of the receiving member protruding from the fitting opening is positioned in the spacing space. The base panel is placed on the pedestal, and a self-tapping screw is screwed from the upper surface of the base panel and the self-tapping screw is further screwed into the pedestal, whereby the base panel is Fixed to the seat, so as to straddle the separating space is intended to lay the stiffening panel on the base panel.

  In the double floor structure according to the present invention, the support leg for the double floor is fitted into the fitting opening formed in the vicinity of the center of the pedestal of which the receiving member is made of a wood material, and the annular protrusion of the receiving member Standing on the structural floor so as to be in a state of receiving the opening edge of the fitting opening, the ground panel constituting the lowermost layer of the walking floor is spaced apart between the long side edges facing each other Is placed on the base so that the vicinity of the head of the receiving member protruding from the fitting opening is positioned in the spaced space, and the stiffening panel is straddled over the spaced space described above on the base panel Is laid.

  In this way, by separating the base panels from each other, the space formed between them can be used as the installation space for the support legs for the double floor, and the base panel is notched as in the conventional case. Since there is no need to apply, there is no restriction on the size and shape of the base panel, so that a general-purpose panel can be used.

  In addition, when fixing the base panel to the pedestal, the self-tapping screw screwed in from the top surface of the base panel can be further screwed into the base made of wood-based material, so the base panel is fixed to the support legs for double floors The workability when doing so is greatly improved.

  On the other hand, the loading load on the walking floor is transmitted to the base panel via the stiffening panel, so even if the base panels are separated from each other, excessive shearing force and bending moment are generated in the finishing material, and good walking When the receiving member is fitted in the fitting opening of the pedestal, the opening edge of the fitting opening is received by the annular protrusion of the member. It is also possible to reliably transmit the upper load to the structural floor.

  The structural floor is mainly assumed to be RC slabs or other concrete slabs, but is not limited to concrete slabs as long as it can transmit the load on the walking floor to columns and walls. Also included is a floor board placed on top.

  The pedestal is made of wood-based material. For example, it can be constructed by forming a circular mating opening in the center of a square plate. It is also possible to produce each time on site.

  Of the walking floor, it is optional how the upper part of the bottom panel and the stiffening panel laminated on it is configured, but because the stiffening panel is laid in the lower layer, it is shrinkable The floor heating panel can also be used, for example, a finishing material made of solid wood is laid on the stiffening panel as the top layer of the walking floor, or the floor heating panel on the stiffening panel In addition, a construction in which a finishing material made of solid wood or composite flooring is laid on the floor heating panel as the uppermost layer of the walking floor can be employed.

The assembly perspective view of the support leg 1 for double floors used by this embodiment. Similarly assembly sectional drawing of the support leg 1 for double floors. It is the figure which showed the double floor structure 34 which concerns on this embodiment, (a) is a detailed top view, (b) is the vertical detailed sectional view which follows the AA line. The construction procedure figure of a double floor structure in case the foundation panel 30 is comprised with the general purpose panel of 2x6 scale size. The construction procedure figure which showed a mode that the base panel 30 was fixed to the base 20. FIG.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a double floor structure and a construction method thereof according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is an assembled perspective view showing a double-floor support leg 1 used in the present embodiment, and FIG. 2 is an assembled sectional view. As can be seen from these figures, the double-floor support leg 1 used in the present embodiment has a leg main body 3 placed on the upper surface of the RC slab 2 as a structural floor and a height extending from the top of the leg main body. An adjustment bolt 4 and a receiving member 5 connected to the leg main body 3 so as to cover the leg main body 3 via the height adjustment bolt are provided.

  The leg body 3 is formed of a vibration-proof rubber so as to attenuate sound and vibration caused by an impact acting on the walking floor.

  The receiving member 5 includes a cylindrical peripheral wall portion 6 formed so as to surround the leg main body in a state of being connected to the leg main body 3, and a top plate portion formed integrally with the cylindrical peripheral wall portion so as to close one end thereof. 8, and a bolt hole 7 into which the height adjustment bolt 4 is screwed is formed in the top plate portion, and the height adjustment bolt 4 is screwed into the bolt hole. The holding height of the receiving member 5 can be adjusted by turning the height adjusting bolt 4 around its axis.

  On the other hand, in the vicinity of the other end of the cylindrical peripheral wall portion 6, an annular protrusion 9 is extended on the outer peripheral surface thereof, and in the vicinity of the center of the pedestal 20 formed of a wood-based material having a square planar shape. When the receiving member 5 is fitted into the formed circular fitting opening 21, the opening edge of the fitting opening can be received by the annular protrusion 9.

  As described above, the annular protrusion 9 determines the installation height of the pedestal 20 and, consequently, the installation height of a walking floor (not shown), which will be described later, placed on the pedestal 20. In configuring, the upper surface position of the annular protrusion 9, in other words, the height of the cylindrical peripheral wall portion 6 is appropriately configured so as to have a dimension corresponding to the degree of floor reduction.

  Note that, when a vertical load is applied to the annular projection 9 at a location where the top plate portion 8 and the cylindrical peripheral wall portion 6 meet, the height of the vertical load is adjusted without causing the top plate portion 8 to be deformed out of plane. A total of four groove-like ribs 10 are formed every 90 ° so as to be surely transmitted to the leg body 3 via the bolts 4 as shown in FIG. In FIG. 2, the rib 10 is omitted for convenience of drawing.

  FIG. 3 is a view showing a double floor structure 34 according to the present embodiment. The double floor structure 34 is formed by laying a walking floor 33 above the RC slab in a state of being separated from the RC slab 2, and the double floor support leg 1 erected on the RC slab 2. A space between the pedestal 20 in which the receiving member 5 is fitted in the fitting opening so that the opening edge of the fitting opening 21 can be received by the annular protrusion 9 and the longitudinal side edges facing each other. 35, and the base panel 30 placed on the pedestal so as to straddle the space 35 so that the vicinity of the head of the receiving member 5 protruding from the fitting opening 21 is positioned in the space. The stiffening panel 31 laid on the base panel and the finishing material 32 laminated on the stiffening panel. The base panel 30, the stiffening panel 31 and the finishing material 32 are: Configure the above-described walking floor 33

  FIG. 4 is an overall plan view showing a construction procedure of a double floor structure when a 2 × 6 scale general-purpose panel composed of particle boards is used as the base panel 30. In order to construct such a double floor structure, as shown in FIG. 2A, first, a plurality of double floor support legs 1 are erected in a row on an RC slab 2.

  Next, the pedestal is attached to the double-floor support leg 1 so that the receiving member 5 of the double-floor support leg 1 is fitted in the fitting opening 21 formed in the pedestal 20.

  The pedestal 20 can be configured by cutting a plate material having a size of about 120 mm × 120 mm and a thickness of about 15 mm, and processing a circular opening serving as a fitting opening 21 at the center with a size of about 50 mm inside diameter. It can be produced locally.

  The pedestal 20 may be installed in a state of being attached to the double floor support legs 1 or may be installed after a plurality of the double floor support legs 1 are arranged in a row.

  Next, a base panel 30 composed of a general-purpose panel having a size of 2 × 6 scale, that is, 600 × 1820 mm is laid. In the laying, the base panels 30 face each other as described with reference to FIG. A base panel 30 is mounted on the base 20 so that a spacing space 35 is formed between the longitudinal side edges, and the vicinity of the head of the receiving member 5 protruding from the fitting opening 21 is positioned in the spacing space. Put.

  The width of the spacing space 35 may be set to about 50 mm, for example.

  Next, as shown in FIG. 5, the self-tapping screw 51 is screwed from the upper surface of the base panel 30 and the self-tapping screw is further screwed into the pedestal 20, thereby fixing the base panel 30 to the pedestal 20.

  Next, as shown in FIG. 4B, the stiffening panel 31 is laid on the base panel 30 so as to straddle the separation space 35.

  The stiffening panel 31 may be a so-called sacrificial plywood having a size of about 910 mm × 1820 mm, for example.

  If the stiffening panel 31 is laid, the finishing material 32 is laid thereon.

  The finishing material 32 can be made of a solid material, for example.

  As described above, according to the double floor structure according to the present embodiment, by separating the base panels 30 and 30 from each other, the separation space 35 formed between them is formed on the support leg 1 for the double floor. It is possible to provide an installation space, and it is not necessary to cut out the base panel as in the conventional case, and there is no restriction on the size and shape of the base panel, so that a general-purpose panel can be used.

  In addition, when fixing the base panel 30 to the pedestal 20, the self-tapping screw 51 screwed from the upper surface of the base panel 30 can be further screwed into the pedestal 20 made of a wood-based material. Workability at the time of fixing to the floor support leg 1 is greatly improved.

  On the other hand, since the loading load on the walking floor 33 is transmitted to the base panel 30 through the stiffening panel 31, even if the base panels 30 and 30 are separated from each other, an excessive shearing force or bending moment is applied to the finishing material 32. Or a good walking feeling may not occur, and the receiving member 5 is fitted into the fitting opening 21 of the base 20 to receive the opening edge of the fitting opening. 9, it is possible to reliably transmit the upper load of the walking floor 33 to the RC slab 2.

  In this embodiment, it is assumed that the pedestal is not included in the component of the support leg for the double floor, assuming that the pedestal manufactured in the field is used. Of course, it is possible to have one.

  Moreover, in this embodiment, although the finishing material 32 which consists of a solid material was made into the uppermost layer of the walk floor 33, it replaces with this from the solid material or composite flooring laid on the floor heating panel and this floor heating panel. The uppermost layer of the walking floor may be configured with the finishing material.

1 Support leg for double floor 2 RC slab (structure floor)
DESCRIPTION OF SYMBOLS 3 Leg main body 4 Height adjustment bolt 5 Receiving member 6 Cylindrical peripheral wall part 7 Bolt hole 8 Top plate part 9 Circular protrusion 20 Base 21 Fitting opening 30 Base panel 31 Stiffening panel 32 Finishing material 33 Walking floor 34 Double floor Structure 35 Spacing space

Claims (4)

In a double floor structure in which a walking floor is laid above the structural floor in a state separated from the structural floor,
A leg main body placed on the upper surface of the structural floor and formed of anti-vibration rubber, a height adjusting bolt extending from the top of the leg main body, and connected to cover the leg main body via the height adjusting bolt. A receiving member, and the receiving member is formed integrally with the cylindrical peripheral wall portion so as to close one end of the cylindrical peripheral wall portion formed so as to surround the leg main body in a state of being connected to the leg main body. A double floor comprising a top plate portion formed with a bolt hole into which the height adjusting bolt is screwed, and an annular projection extending from the outer peripheral surface in the vicinity of the other end of the cylindrical peripheral wall portion. Support legs,
A pedestal made of a wood-based material into which the receiving member of the support leg for the double floor is fitted so that the opening edge of the fitting opening formed in the vicinity of the center is received by the annular projection,
The pedestal is formed as a lowermost layer of the walking floor so that a space is formed between the longitudinal side edges facing each other and the vicinity of the head of the receiving member protruding from the fitting opening is positioned in the space. A base panel placed on top of
A stiffening panel laid on the base panel so as to straddle the spacing space ;
A double floor structure, wherein the cylindrical peripheral wall portion is configured such that its height is greater than the thickness of the pedestal . 2. The double floor structure according to claim 1, wherein a groove-like rib is formed along a direction from the bolt hole toward the annular projection at a place where the top plate portion and the cylindrical peripheral wall portion meet. A finishing material made of a solid material is laid on the stiffening panel as the uppermost layer of the walking floor, or a floor heating panel is laid on the stiffening panel and a solid material or a composite is laid on the floor heating panel. The double floor structure according to claim 1 or 2, wherein a finishing material made of flooring is laid as an uppermost layer of the walking floor. 4. The double floor support leg according to claim 1, wherein the double floor support leg is erected on the structural floor, and the receiving member is fitted into the fitting opening and the circle. The pedestal is attached to the double floor support leg so as to be in a state of receiving an opening edge of the fitting opening by an annular protrusion, and a space is provided between the long side edges facing each other in the base panel. The base panel is placed on the pedestal so that the vicinity of the head of the receiving member that is formed and protrudes from the fitting opening is positioned in the spaced space, and a self-tapping screw is provided from the upper surface of the base panel. The self-tapping screw is further screwed into the pedestal, and the base panel is fixed to the pedestal, and is placed on the base panel so as to straddle the separation space. Method of constructing a double floor structure, which comprises laying the Kiho rigid panel.

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