JP4384186B2 - Construction method of double floor structure, partition wall support member and double floor structure - Google Patents

Description

  The present invention relates to a double floor structure constructed by a floor prior construction method in a building such as an apartment house, a construction method of the double floor structure, and a partition wall support member used in these structures.

  As a floor structure of an apartment house, a double floor structure in which floor materials are installed at a predetermined height from the floor of a building frame is often used.

  A so-called wall advance construction method is generally known as a construction method of a double floor structure. For example, as shown in FIG. 9, the wall leading construction method is a construction method in which the partition wall 135 is erected on the floor surface 154 of the building housing 152 and then the floor material 130 is installed at a predetermined height across the plurality of partition walls 135. It is. In the double floor structure constructed by the wall advance construction method, since the partition wall 135 is directly supported by the building housing 152, there is an advantage that the support strength of the partition wall 135 can be sufficiently secured.

  However, in the wall advance construction method, the floor material must be constructed with a large number of protruding corners and entering corners in a space that is partitioned by a partition wall, and it is necessary to attach a joist at the corner of the room. Therefore, the construction becomes extremely complicated. Moreover, with the construction of the flooring in a narrow space, the yield deteriorates and the material cost increases. Furthermore, since it is necessary to remove not only the partition walls but also the flooring material in order to change the arrangement of the partition walls at the time of renovation, there is a disadvantage that the construction at the time of renovation becomes complicated.

  On the other hand, as a construction method of the double floor structure, after installing the flooring at a predetermined height from the floor of the building frame, a so-called floor leading construction method, in which a partition wall is erected on the upper surface of the flooring Has been proposed.

  As the floor prior construction method, in the installation part of the partition wall, a support member such as a support leg for reinforcement that supports the floor material from the lower side is installed in advance, and the partition wall is attached to the floor material part where the support member is installed. As shown in FIG. 10, the number of support members 142 that support the flooring 130 is set to be twice or more the normal number, and the pitch of the support members 142 is reduced to increase the floor rigidity. Conventionally, a construction method in which the partition wall 135 is erected on the floor material 130 has been adopted.

  However, in the former method, before installing the flooring, it is necessary to accurately dispose the reinforcing support member that supports the flooring from the lower side on the installation part of the partition wall. Have. Moreover, since a partition wall cannot be erected in the non-installation part of a support member, a partition wall cannot be freely arrange | positioned after installation of a flooring, and the freedom degree of design will become low. On the other hand, the latter construction method has a drawback that the workability is deteriorated and the material cost is increased because the number of support members for reinforcement is large. In both cases, since the partition wall is erected on the flooring material, the vibration at the time of floor impact sound is easily transmitted from the flooring material to the floor through the partitioning wall.

In view of such a problem, Patent Document 1 proposes a technique for improving the workability in the floor advance construction method.
JP-A-6-108568

  In the technique of Patent Document 1, a partition wall support member including a long base material disposed along the lower end portion of the partition wall and support legs protruding downward from the lower surface of the base material is used. The partition wall support member is installed after the floor material of the double floor is installed. Specifically, when installing the partition wall support member, first, a plurality of openings are drilled at predetermined locations on the flooring, and the support legs of the partition wall support member are inserted through these openings from above. The lower end of the support leg is brought into contact with the floor surface of the building frame, and the base material of the partition wall support member is placed on the upper surface of the floor material. According to such a technique, the partition wall support member can be positioned after the floor material is installed, and it is possible to avoid installing more partition wall support members than necessary. Can greatly improve. Moreover, since the installation location of a partition wall support member and a partition wall can be determined arbitrarily after installation of a flooring, the freedom degree of design can be raised. Furthermore, since the arrangement of the partition wall support member and the partition wall can be changed without removing the floor material at the time of renovation, the workability at the time of remodeling is improved.

  However, even in the technique of Patent Document 1, the vibration of the flooring material when the floor impact sound is generated is easily transmitted to the downstairs through the partition wall, and the floor impact sound level cannot be reduced, as in the conventional floor advancement method.

In view of such a problem, Patent Documents 2 and 3 propose techniques for reducing the floor impact sound level.
JP 2001-329641 A JP 2001-295451 A

  Specifically, in the technique of Patent Document 2, the partition wall support member includes a rubber vibration isolating member including a flange portion attached to the lower surface of the base material and a cylindrical portion surrounding the outer periphery of the support leg, and the partition wall When the support member is installed, the vibration isolating member is interposed between the support leg and the peripheral wall of the opening of the flooring. With this configuration, vibration transmission from the floor material to the partition wall is reduced by interposing a vibration isolating member between the floor material and the partition wall support member.

  In the technique of Patent Document 3, a rubber vibration isolating member is loaded between the support leg of the partition wall support member and the peripheral wall of the opening of the flooring. By interposing a vibration isolating member between the material and the partition wall supporting member, transmission of vibration from the floor material to the partition wall is reduced.

  However, in the techniques of Patent Document 2 and Patent Document 3, a part of the vibration of the floor material is transmitted from the peripheral wall of the opening of the floor material to the support leg of the partition wall support member via the vibration isolation member. And a structure in which no other member is interposed between the opening and the peripheral wall of the opening of the flooring, the vibration of the flooring is easily transmitted to the support legs, and the partition wall support member is likely to vibrate. Therefore, when floor impact sound is generated, there is a possibility that the transmission of vibration from the floor material to the partition wall cannot be sufficiently reduced.

  Moreover, in the technique of patent document 2, since the vibration-proof member of a partition wall support member has a complicated structure formed by combining a flange part and a cylindrical part, the fault which invites complication of the structure of a partition wall support member Also have.

  Furthermore, the technique of Patent Document 3 has a drawback that the installation work becomes complicated because a work for loading the vibration isolating member is required in addition to the work for attaching the partition wall support member.

  Therefore, the present invention improves the workability of the double floor structure by the floor prior construction method and simplifies the structure of the partition wall support member used for this construction, and from the floor material at the time of floor impact sound generation to the partition wall. The purpose is to sufficiently reduce the transmission of vibration.

In order to solve the above problems, the construction method of the double floor structure according to the present invention is:
A long base, a support leg protruding downward from the lower surface of the base, a thin base made of a soft material, a plurality of protrusions protruding downward from the lower surface of the base, and a lower surface of the protrusion An anti-vibration member having a plurality of formed protrusions, and the plurality of protrusions are spaced apart in the longitudinal direction of the substrate so as to avoid interference between the anti-vibration member and the support legs. Preparing a partition wall support member in which the upper surface of the base is affixed to the lower surface of the base material so as to be disposed;
Installing a floor for double floors at a predetermined height from the floor of the building frame;
Placing the prepared partition wall support member on the upper surface of the floor material so that the vibration isolating member is interposed between the base material and the floor material after the floor material is installed; ,
A step of standing the partition wall along the base material of the partition wall support member on the upper surface of the floor material after placing the partition wall support member;

The partition wall support member according to the present invention is
In the building where the partition wall is erected on the upper surface of the floor material constituting the double floor, the partition wall support member that supports the lower end of the partition wall,
A long base material disposed along the lower end of the partition wall;
A support leg that protrudes downward from the lower surface of the base material, and the protrusion amount is adjustable;
An anti-vibration member made of a soft material ,
The vibration isolator has a thin base, a plurality of protrusions protruding downward from the lower surface of the base, and a plurality of protrusions formed on the lower surface of the protrusion,
The upper surface of the base portion is disposed on the lower surface of the base material so as to avoid interference between the vibration isolating member and the support legs, and the plurality of protrusions are arranged at intervals in the longitudinal direction of the base material. It is characterized by being pasted .

The double floor structure according to the present invention is
Floor materials for double floors arranged at a predetermined height from the floor of the building frame;
A partition wall erected on the upper surface of the flooring;
A double floor structure comprising a partition wall support member for supporting the lower end of the partition wall,
The partition wall support member includes a long base extending along the lower end of the partition wall, a support leg extending from the base to the floor of the building frame, and a vibration isolating member made of a soft material. Prepared,
The vibration isolator has a thin base, a plurality of protrusions protruding downward from the lower surface of the base, and a plurality of protrusions formed on the lower surface of the protrusion,
The upper surface of the base portion is disposed on the lower surface of the base material so as to avoid interference between the vibration isolating member and the support legs, and the plurality of protrusions are arranged at intervals in the longitudinal direction of the base material. Pasted,
The lower surface of the protrusion is placed on the upper surface of the flooring .

  According to the present invention, since the vibration isolating member is interposed between the floor material for the double floor and the base material of the partition wall support member, the transmission of vibration between the base material and the floor material is prevented. It can be reduced by the vibration member. In addition, since the vibration isolator is provided so as to avoid interference with the support legs of the partition wall support member, a space can be secured between the support legs and the peripheral wall of the opening of the flooring, thereby supporting Transmission of vibration between the leg and the flooring can be prevented. Therefore, it is possible to sufficiently reduce the transmission of vibration from the floor material to the partition wall and the transmission of vibration from the partition wall to the floor material when the floor impact sound is generated.

  Moreover, since the shape of the vibration isolating member of the partition wall support member may be a simple shape as long as it can be interposed between the base material and the flooring, the structure of the partition wall support member can be simplified. it can.

  Furthermore, the vibration-proof member can be interposed between the floor material and the base material simply by placing the base material to which the vibration-proof member is attached on the floor material. Moreover, since the base material can be set at a predetermined height simply by being placed on the floor material, there is no need to adjust the level of the base material. Therefore, workability can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, terms indicating a specific direction and position (for example, “up”, “down”, “right”, “left” and other terms including those terms) are used as necessary. These terms are used for easy understanding of the invention with reference to the drawings, and the technical scope of the present invention is not limited by the meaning of these terms.

  1 and 2 show a double floor structure using a partition wall support member 2 according to an embodiment of the present invention. The double floor structure shown in FIGS. 1 and 2 has a partition wall on the upper surface of the flooring 30 after the flooring 30 for double flooring is installed at a predetermined height from the floor 54 of the building housing 52. 35 is constructed by a so-called floor advance construction method, and is applied to a building such as an apartment house.

  As shown in FIG. 2 and FIG. 6, a plurality of openings 32 through which a later-described support leg 10 of the partition wall support member 2 is inserted are formed in the floor material 30 at predetermined positions. The opening 32 is, for example, circular, and the diameter of the opening 32 is preferably 5% or more and less than 30% larger than the maximum diameter portion of the support leg 10 of the partition wall support member 2. By making the diameter of the opening 32 larger than the maximum portion of the diameter of the support leg 10 by 5% or more, the support leg 10 can be easily inserted into the opening 32 and workability is improved. If the diameter of the opening 32 is larger by 30% or more than the maximum portion of the diameter of the support leg 10, the ground contact position of the support leg 10 inserted through the opening 32 becomes unstable.

  The floor material 30 is supported by a plurality of support legs 42 at a height spaced from the floor surface 54 of the structural housing 52 by a predetermined distance. The support legs 42 are attached to a fixing plate 48 that is fixed to the lower surface of the flooring 30 with, for example, screws across the adjacent flooring 30 and a through hole (not shown) that passes through the center of the fixing plate 48 in the vertical direction. A nut 44, a bolt 44 screwed into the nut 46, and a buffer member 50 attached to the lower end of the bolt 44.

  The partition wall support member 2 is a member for supporting the lower end of the partition wall 35. As shown in FIG. 2, the partition wall support member 2 extends from the long base 4 extending along the lower end of the partition wall 35 and the base 4. A support leg 10 extending to the floor surface 54 of the building housing 52 and a vibration isolating member 18 interposed between the base material 4 and the flooring 30 so as not to interfere with the support leg 10 are provided.

  As shown in FIGS. 1 and 4, a plurality of through holes 6 penetrating in the vertical direction are formed in the base material 4 at predetermined intervals in the longitudinal direction of the base material 4. As the material of the base material 4, for example, a plywood material or a single plate laminated material generally used as a building material is used, but other woody materials or wood substitute materials based on synthetic resins may be used. it can. The cross-sectional shape of the substrate 4 is, for example, a rectangle, but is not limited thereto, and may be, for example, a trapezoid.

  A plurality of support legs 10 are provided at predetermined intervals in the longitudinal direction of the base material 4, and the upper ends of the support legs 10 are attached to the base material 4. Although the space | interval between the adjacent support legs 10 is not specifically limited, For example, it sets to 300 mm or more and 600 mm or less.

  The support leg 10 includes a nut 14 fitted in the through hole 6 of the base material 4, a bolt 12 screwed into the nut 14, and a buffer member 16 attached to the lower end portion of the bolt 12.

  A flange 15 is formed on the outer peripheral surface of the nut 14 so as to project outward in the radial direction. The outer diameter of the nut 14 is slightly larger than the diameter of the through hole 6 of the base material 4, and the nut 14 is fitted into the through hole 6 by being press-fitted into the through hole 6 from the lower side of the base material 4. Only the portion of the nut 14 above the flange 15 is fitted into the through hole 6, and the portion below the flange 15 is exposed to the lower side of the base material 4. As the nut 14, for example, steel or resin is used, but the material of the nut 14 is not particularly limited.

  The bolt 12 is assembled to the nut 14 by being screwed into the nut 14 from below. A groove for operating the bolt 12 is formed on the upper end surface of the bolt 12, and the bolt 12 can be rotated by engaging a screwdriver or the like with the groove of the bolt 12.

  As the buffer member 16, it is preferable to use rubber or soft resin, which can absorb the unevenness of the floor surface 54 of the structural housing 52 and stably place the support leg 10 on the floor surface 54. .

  The support leg 10 configured in this manner protrudes downward from the lower surface of the base material 4 in a state of being attached to the base material 4, and the protrusion amount, that is, the height of the support leg 10 can be adjusted. Specifically, the height of the support leg 10 can be adjusted by rotating the bolt 12 from above, and more specifically, the support leg 10 can be screwed downward with respect to the nut 14. 10 can be lengthened, and the support leg 10 can be shortened by screwing the bolt 12 upward.

  The support leg 10 is inserted through the opening 32 of the flooring 30, and a gap is secured between the outer peripheral surface of the support leg 10 and the peripheral wall of the opening 32. Thereby, the vibration of the flooring 30 is not transmitted from the peripheral wall of the opening 32 to the support leg 10.

  The anti-vibration member 18 includes a thin base portion 20 attached to the lower surface of the base member 4 and a protruding portion 22 that protrudes downward from the lower surface of the base portion 20. The vibration isolation member 18 is attached to the lower surface of the base material 4 at the base portion 20 so as to avoid interference with the support legs 10, and is in contact with the upper surface of the flooring 30 at the protruding portion 22.

  As shown in FIG. 5, the base portion 20 is affixed to the lower surface of the base material 4 via an adhesive layer 26 formed on the upper surface of the base portion 20. In addition, it is preferable to coat | cover the adhesive layer 26 with coating | coated members, such as a release paper which is not shown in figure, before attachment to the base material 4 of the vibration isolator 18. However, the pressure-sensitive adhesive layer 26 is not necessarily provided, and the vibration isolation member 18 may be applied to the upper surface of the base portion 20 by applying a pressure-sensitive adhesive or an adhesive to the substrate 4.

  A plurality of protruding portions 22 are arranged at intervals in the longitudinal direction of the base material 4. A plurality of convex portions 24 are formed on the lower surface of the protruding portion 22, but the convex portions 24 are not necessarily provided. The lower surfaces of the plurality of projecting portions 22 are disposed on substantially the same plane as each other, and serve as a mounting surface on the upper surface of the flooring 30.

  As shown in FIG. 4, the vibration isolation member 18 is attached to a portion sandwiched between a pair of adjacent support legs 10 on the lower surface of the substrate 4. An anti-vibration member 18 cut to an appropriate size is attached to the lower surface of the end portion of the substrate 4.

  The vibration isolation member 18 is made of a soft material. As a specific material of the vibration isolation member 18, for example, rubber or thermoplastic elastomer is used. The vibration isolator 18 is preferably prepared to have an A type hardness of 20 or more and 70 or less in accordance with JIS K6253 in order to sufficiently reduce vibrations when floor impact sound is generated.

  When rubber is used as the material of the vibration isolation member 18, the vibration isolation member 18 can be manufactured by mixing or laminating one or two or more types of rubber compounding compositions and performing cross-linking molding. When a thermoplastic elastomer is used, the vibration isolator 18 can be manufactured by mixing or laminating one or two or more thermoplastic elastomer blend compositions.

  The configuration of the partition wall 35 is not particularly limited, but as shown in FIGS. 1 and 2, the partition wall 35 according to the present embodiment is a steel runner 36 fixed to the upper surface of the base material 4 of the partition wall support member 2. And a plurality of studs 38 erected on the steel runner 36 and a plurality of wall members 40 provided on both sides of the steel runner 36 in the width direction of the steel runner 36.

  As the steel runner 36, for example, a C channel is used. The steel runner 36 is disposed along the longitudinal direction of the base material 4 of the partition wall support member 2 in an open state upward, and is fixed to the upper surface of the base material 4 with screws or the like. However, instead of the steel runner 36, other long members made of a steel-based material or a wood-based material may be used.

  As the stud 38, for example, a B-shaped steel material is used. A plurality of studs 38 are arranged at predetermined intervals in the longitudinal direction of the steel runner 36, and the lower end portion of each stud 38 is fixed to the steel runner 36 with screws or the like. However, as the stud 38, other long members made of a steel-based material or a wood-based material may be used.

  As the wall material 40, for example, a gypsum board or a decorative plywood is used. The wall material 40 is attached over a plurality of studs 38 and is fixed to the studs 38 and the steel runners 36 with screws or the like. A decorative material such as wallpaper (not shown) is attached to the surface of the wall material 40.

  In the double floor structure configured as described above, when floor impact sound is generated, the vibration of the floor material 30 is not directly transmitted from the floor material 30 to the support legs 10 of the partition wall support member 2. Further, since the vibration isolating member 18 is interposed between the base material 4 and the floor material 30 of the partition wall support member 2, vibration transmission from the floor material 30 to the base material 4 is greatly reduced. Therefore, the vibration when the floor impact sound is generated is very difficult to be transmitted from the floor material 30 to the partition wall support member 2, so that the transmission of vibration from the floor material 30 to the partition wall 35 can be sufficiently reduced. The floor impact sound level transmitted downstairs can be greatly reduced. Similarly, vibration transmission from the partition wall 35 to the flooring 30 can be sufficiently reduced.

  Next, the specific example of the construction method of the double floor structure concerning this invention is demonstrated.

  As shown in FIG. 6 and FIG. 7, first, a plurality of support legs 42 that support the floor material 30 for double floors are arranged at predetermined positions on the floor surface 54 of the structural housing 52, and these support legs 42. A flooring 30 is attached to the floor. Subsequently, the length of the support leg 42 is adjusted by rotating the bolt 44 of the support leg 42 to adjust the height of the flooring 30 to a predetermined height. Thereby, the flooring 30 is installed at a predetermined height from the floor surface 54 of the building housing 52.

  Next, according to the position where the partition wall 35 is installed, an opening 32 for inserting the support leg 10 of the partition wall support member 2 is drilled at a predetermined position of the flooring 30. At this time, since the opening 32 can be drilled at an arbitrary position of the flooring 30 and the partition wall 35 can be installed at an arbitrary position, the degree of freedom in design is increased.

  Subsequently, a plurality of partition wall support members 2 are installed from the upper side of the flooring 30. When installing each partition wall support member 2, the base 4 of the partition wall support member 2 is attached to the floor material 30 while the support legs 10 of the partition wall support member 2 are inserted through the openings 32 of the floor material 30 from above. Place on top. Thereby, the vibration isolator 18 is interposed between the base material 4 and the flooring 30. At this time, since the base material 4 is installed at a predetermined height simply by being placed on the flooring 30, it is not necessary to perform the level adjustment work of the base material 4, and the construction can be simplified. .

  After the base material 4 is placed on the upper surface of the flooring 30, as shown in FIG. 8, the support leg 10 is extended downward by rotating the bolt 12 of the support leg 10, and the lower end of the support leg 10 is moved downward. It is brought into contact with the floor surface 54 of the structural housing 52. After adjusting the length of the support leg 10 in this way, the bolt 12 and the nut 14 are fixed with an adhesive in order to keep the length of the support leg 10 constant. Thereafter, the base material 4 is fixed to the flooring 30 with screws or the like.

  After installing the partition wall support member 2 in this way, the partition wall 35 is erected along the base material 4 on the upper surface of the flooring 30. Specifically, as shown in FIGS. 1 and 2, a steel runner 36 is fixed to the upper surface of the base material 4, and a plurality of studs 38 are arranged on the steel runner 36 at predetermined intervals. The wall material 40 is fixed to the stud 38 and the steel runner 36 from both sides in the width direction of the steel runner 36. Finally, the partition wall 35 is installed by attaching a decorative material (not shown) to the surface of the wall material 40.

  While the present invention has been described with reference to the above-described embodiments, the present invention is not limited to the above-described embodiments.

It is sectional drawing which shows the double floor structure using the partition wall support member which concerns on one Embodiment of this invention. It is sectional drawing which looked at the double floor structure shown in FIG. 1 from the side of the partition wall support member. It is a perspective view which shows a partition wall support member. It is a disassembled perspective view of the partition wall support member shown in FIG. It is the perspective view which looked at the vibration isolator from the lower side. It is a perspective view which shows the floor material for double floors, and a partition wall support member. It is sectional drawing which shows the floor material for double floors, and a partition wall support member. It is sectional drawing which shows the construction procedure of a partition wall support member. It is sectional drawing which shows the prior art example of the double floor structure by a wall preceding construction method. It is sectional drawing which shows the prior art example of the double floor structure by a floor advance construction method.

Explanation of symbols

2: Partition wall support member,
4: Substrate,
10: support legs,
18: Anti-vibration member,
20: the base of the vibration isolator,
22: Protruding part of the vibration isolating member,
30: flooring,
52: Structural enclosure,
54: Floor surface of the structural frame.

Claims (4)

A long base, a support leg protruding downward from the lower surface of the base, a thin base made of a soft material, a plurality of protrusions protruding downward from the lower surface of the base, and a lower surface of the protrusion An anti-vibration member having a plurality of formed protrusions, and the plurality of protrusions are spaced apart in the longitudinal direction of the substrate so as to avoid interference between the anti-vibration member and the support legs. Preparing a partition wall support member in which the upper surface of the base is affixed to the lower surface of the base material so as to be disposed;
Installing a floor for double floors at a predetermined height from the floor of the building frame;
Placing the prepared partition wall support member on the upper surface of the floor material so that the vibration isolating member is interposed between the base material and the floor material after the floor material is installed; ,
After the partition wall support member is placed, a construction of a double floor structure comprising a step of standing a partition wall along the base material of the partition wall support member on the upper surface of the floor material Method. In the building where the partition wall is erected on the upper surface of the floor material constituting the double floor, the partition wall support member that supports the lower end of the partition wall,
A long base material disposed along the lower end of the partition wall;
A support leg that protrudes downward from the lower surface of the base material, and the protrusion amount is adjustable;
An anti-vibration member made of a soft material ,
The vibration isolator has a thin base, a plurality of protrusions protruding downward from the lower surface of the base, and a plurality of protrusions formed on the lower surface of the protrusion,
The upper surface of the base portion is disposed on the lower surface of the base material so as to avoid interference between the vibration isolating member and the support legs, and the plurality of protrusions are arranged at intervals in the longitudinal direction of the base material. A partition wall support member, wherein the partition wall support member is attached . The partition wall support member according to claim 2 , wherein the vibration isolation member is made of rubber or elastomer. Floor materials for double floors arranged at a predetermined height from the floor of the building frame;
A partition wall erected on the upper surface of the flooring;
A double floor structure comprising a partition wall support member for supporting the lower end of the partition wall,
The partition wall support member includes a long base extending along the lower end of the partition wall, a support leg extending from the base to the floor of the building frame, and a vibration isolating member made of a soft material. Prepared,
The vibration isolator has a thin base, a plurality of protrusions protruding downward from the lower surface of the base, and a plurality of protrusions formed on the lower surface of the protrusion,
The upper surface of the base portion is disposed on the lower surface of the base material so as to avoid interference between the vibration isolating member and the support legs, and the plurality of protrusions are arranged at intervals in the longitudinal direction of the base material. Pasted,
The double floor structure, wherein the lower surface of the protruding portion is placed on the upper surface of the floor material .

Images