JP2017133281A - Floating floor construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability when constructing a floating floor.SOLUTION: A floating floor construction method of the present invention comprises a process of laying a separation sheet on a floor base, a process of installing a vibration control device including a pedestal part having elasticity, a floor slab support member supported on the pedestal part and a leveling bolt for lifting the floor slab support member, on the floor base laid with the separation sheet, a process of enclosing the leveling bolt of the vibration control device by a cylindrical member, a process of covering the pedestal part, the floor slab support member, and a lower part of the cylindrical member with a die-formed cover member, a process of placing concrete in a form of arranging a reinforcement core material on the floor base laid with the separation sheet and on the floor slab support member of the vibration control device covered with the cover member, a process of forming a floor slab by solidifying the placed concrete, and a process of floating the floor slab from above the floor base laid with the separation sheet by lifting the floor slab support member via the leveling bolt.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a floating floor construction method for constructing a floating floor capable of enhancing sound insulation performance and vibration isolation performance.

  A floating floor construction method for constructing a floating floor by floating a floor slab obtained by placing concrete on a floor base such as a frame is disclosed (see Patent Document 1). In addition, a method for manufacturing a floating slab in which a release material such as vinyl sheet, rock wool, glass wool or the like is disposed except for a base seat mounting portion fixed to an anchor bolt on a housing slab has been proposed ( Patent Document 2).

  Furthermore, a structure of an anti-vibration support in which a concrete release sheet such as a vinyl sheet or a plastic sheet or a formwork is arranged on the base so that the slab in which the housing portion is embedded and the base is not integrated is also known ( (See Patent Document 3). In addition, a vinyl sheet as a release material for the damping steel plate is laid in the mold, and a spacer made of a flexible material such as sponge is surrounded on the vinyl sheet around the damping steel plate so that concrete does not enter. There has been proposed a method for producing a sound insulating composite floor arranged in such a manner (see Patent Document 4).

Japanese Patent No. 3970090 JP-A-8-105144 JP-A-10-219902 JP-A-5-331946

  By the way, in the floating floor construction method as exemplified in Patent Document 1 above, in order to prevent the inflow of concrete into the vibration isolator including a rubber-like elastic body, generally, the periphery of the vibration isolator is For example, an operation of covering with a polyethylene film or the like and fixing with an adhesive tape is performed.

  Specifically, for each of the plurality of vibration isolators, a polyethylene film of a desired size is drawn and cut at the construction site from a wound body of polyethylene film wound in a roll shape. Complicated manual work for covering the polyethylene film around the vibration isolator is necessary. Therefore, the work of preventing the inflow of concrete is inferior in work efficiency, and since there is a large variation in the appearance of the part covered with the polyethylene film depending on the worker, there is a concern about uneven work quality.

  Then, this invention is made | formed in order to eliminate the said subject, and it aims at provision of the floating floor construction method which can improve the workability | operativity at the time of constructing a floating floor.

  In order to achieve the above object, a floating floor construction method according to an aspect of the present invention includes a step of laying a release sheet on a floor base, a pedestal portion having elasticity, and a floor slab support supported on the pedestal portion. Installing a vibration isolator including a member and a leveling bolt for raising and lowering the floor slab support member on the floor base on which the release sheet is laid, and the leveling bolt of the installed vibration isolator. A step of enclosing with a cylindrical member, a step of covering the pedestal portion of the installed vibration isolator, the floor slab support member, and a lower portion of the cylindrical member with a molded cover member, Placing concrete in a formwork provided with reinforcing cores on the floor slab support member of the anti-vibration device covered with the cover member on the laid floor base, and the placement Solidify concrete Letting the floor slab form, and raising the floor slab support member via the leveling bolt to float the formed floor slab from the floor base on which the release sheet is laid. It is characterized by having.

  That is, in the floating floor construction method according to one aspect of the present invention, as described above, the work of preventing the inflow of concrete into the vibration isolator is realized by mainly applying the molded cover member. As a result, the work efficiency of the concrete inflow prevention work can be improved, the work can be made uniform, and the work quality can be improved.

  Moreover, the floating floor construction method according to another aspect of the present invention is characterized in that the cover member has a through-hole through which the tubular member passes and a recess corresponding to the shape of the floor slab support member. Yes. Thereby, the cylindrical member and the cover member are cooperated to cover the vibration isolator by aligning the floor slab support member and the recess while penetrating the cylindrical member into the through hole of the cover member. Is possible.

  Furthermore, the floating floor construction method according to another aspect of the present invention is characterized in that the cover member is formed of a thermoplastic resin. According to this floating floor construction method, workability can be further improved, for example, by applying a cover member made of a thermoplastic resin having flexibility and setting it in a vibration isolator.

  ADVANTAGE OF THE INVENTION According to this invention, the floating floor construction method which can improve the workability | operativity at the time of constructing a floating floor can be provided.

Sectional drawing which shows partially the floor structure constructed | assembled by the floating floor construction method which concerns on embodiment of this invention. Sectional drawing which shows the state which has arrange | positioned the formwork, the insulating member, and the peeling sheet on the floor base in the floating floor construction method of FIG. Sectional drawing which shows the state just before installing a vibration isolator on the floor base | substrate with which the peeling sheet of FIG. 2 is arrange | positioned, and also trying to arrange | position a cover member. Sectional drawing which shows the state by which the cover member is arrange | positioned on the vibration isolator of FIG. Sectional drawing which shows the state by which concrete was laid on the floor base | substrate of FIG. 4, and a vibration isolator. Sectional drawing which shows the state which floated the floor slab on the floor base | substrate of FIG. The flowchart which shows the floating floor construction method which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a floor structure 10 constructed by a floating floor construction method according to an embodiment of the present invention includes a floor base 12, a form frame 14, an insulating member 15, a release sheet 16, and a plurality of vibration isolation devices 17 ( 1 to 6, illustration of a plurality of other vibration isolators is omitted), a cover member 18, a tubular member (concrete inflow prevention pipe) 19, a floor slab 20 reinforced with a reinforcing core member 23, a nut 22, and the like. have. The floor structure 10 has a floating floor structure, and a floor slab (floating floor) 20 is disposed with a gap 21 from the floor base 12.

  The floor base 12 is, for example, a frame (concrete frame) made of reinforced concrete or the like. The form frame 14 defines a construction range (a range in which the floor slab 20 is formed) on the floor base 12. The insulating member (insulator) 15 is affixed to the inner portion (rising portion) of the form frame 14. The release sheet 16 is laid on the inner surface of the insulating member 15 and the floor base 12. The release sheet 16 is made of, for example, a polyethylene film having a thickness of 0.15 mm.

  The individual vibration isolator 17 is arranged at a predetermined pitch, and includes a floor slab support member 17a, a pedestal portion 17b, a leveling bolt 17c, and a resilient member 17d. The pedestal portion 17b has elasticity and is formed in a disk shape. The pedestal portion 17b is made of an elastic body such as natural rubber. The floor slab support member 17a is formed in a disc shape and is elastically supported on the pedestal portion 17b. Further, the floor slab support member 17a supports the floor slab 20 from below.

  A leveling bolt (for example, an M18 × P2.5 leveling bolt) 17c moves the floor slab support member 17a up and down (moves up and down). Specifically, the leveling bolt 17c is engaged (threaded with a screw hole) with an internally threaded portion formed at the center portion of the floor slab support member 17a. The leveling bolt 17c raises the floor slab support member 17a when the tip portion thereof is rotated in a direction in which it projects toward the pedestal portion 17b (presses on the pedestal portion 17b). Further, the leveling bolt 17c lowers the floor slab support member 17a when the tip end portion thereof is rotated in a direction in which the leveling bolt 17c moves backward from the pedestal 17b side. In order to rotate the leveling bolt 17c, a nut 22 is attached to the head (base end portion) of the leveling bolt 17c.

  Here, as shown in FIG. 1, the floor structure 10 is fixed in a state in which the leveling bolt 17c is rotated in the direction in which the floor slab support member 17a is raised. Along with this, the floor slab 20 obtained by placing concrete floats from the floor base 12 to form a gap 21, thereby forming a floating floor.

  As shown in FIG. 1, the elastic member 17d is formed in a ring shape using, for example, a foam material or a rubber material so as to surround the side surface of the pedestal portion 17b. The elastic member 17d blocks the gap between the bottom of the floor slab support member 17a and the release sheet 16, thereby preventing the concrete immediately after placement from flowing and coming into contact with the pedestal 17b.

  The cylindrical member 19 is composed of, for example, a vinyl chloride pipe, and is disposed on the floor slab support member 17a so as to surround the leveling bolt 17c of the vibration isolator 17 as shown in FIG.

  The cylindrical member 19 and the cover member 18 are applied to prevent the inflow of concrete into the vibration isolator 17. The cover member 18 is obtained by integrally molding (molding) a thermoplastic resin such as polypropylene (PP) with a mold. As shown in FIG. 3 and the like, the cover member 18 generally has a stepped cylindrical shape, and includes a through hole 18a, a concave portion 18b, a flange portion (collar portion) 18c, and the like. The outer shape of the flange portion (collar portion) 18c is formed in, for example, a rectangular shape.

  The through hole 18a is perforated with a size that allows the tubular member 19 to pass therethrough. The recessed part 18b is a hollow part corresponding to the shape of the floor slab support member 17a. That is, as shown in FIG. 4 and the like, the cylindrical member 19 and the cover are aligned by aligning the floor slab support member 17a and the recess 18b while passing the cylindrical member 19 through the through hole 18a of the cover member 18. The member 18 cooperates with each other to cover the vibration isolator 17.

  More specifically, as shown in FIGS. 3 and 4, the flange portion 18 c of the cover member 18 has a floor base on which the release sheet 16 is laid before the floor slab 20 is formed (before the concrete is placed). 12 is mounted. In this state, as shown in FIG. 4, the cover member 18 is positioned below the cylindrical member surrounding the pedestal 17b, the floor slab support member 17a, and the leveling bolt 17c (and the elastic member 17d) of the vibration isolator 17. cover.

  In addition, the cover member 18 has desired flexibility and / or translucency by molding with a predetermined thickness using the above-described polypropylene resin as a material. Thereby, it becomes easy to set the cover member 18 to the tubular member 19 and the vibration isolator 17, and workability can be improved.

  In addition, the boundary part of the periphery of the upper opening end in the cover member 18 and the outer peripheral surface of the cylindrical member 19 is mutually joined with adhesive tape (cloth adhesive tape etc.). Further, the boundary portion between the peripheral edge of the flange portion 18 c in the cover member 18 and the release sheet 16 laid on the floor base 12 is also bonded to each other with an adhesive tape.

  Next, the floating floor construction method of this embodiment will be described based on the cross-sectional views of FIGS. 1 to 6 and the flowchart shown in FIG. First, based on the construction drawing, the installation position of each of the plurality of vibration isolation devices 17 is determined from the building standard ink (running ink). Next, as shown in FIG. 2, the frame 14 and the insulating member 15 are arranged on the floor base 12, and further, as shown in FIGS. 2 and 7, a release sheet 16 is laid on the floor base 12 ( S1). At this time, the seams between the release sheets 16 are overlapped (wrapped), for example, 50 mm to 100 mm, and further, this part is covered with an adhesive tape to prevent the inflow of the concrete at the time of placing.

  Subsequently, as shown in FIGS. 3 and 7, a plurality of vibration isolators 17 are installed on the floor base 12 on which the release sheet 16 is laid (each position where ink is drawn out) (S2). Furthermore, the leveling bolt 17c for each installed vibration isolator 17 is surrounded by the cylindrical member 19 (S3). At this time, the cylindrical member 19 is disposed on the floor slab support member 17 a of the vibration isolator 17.

  Next, as shown in FIGS. 4 and 7, the base 17b, the floor slab support member 17a, and the lower part of the cylindrical member 19 surrounding the leveling bolt 17c (and the elastic member 17d) are installed. Are covered with the cover member 18 (S4). At this time, as described above, an adhesive tape is applied to the boundary portion between the cover member 18 and the cylindrical member 19 and the boundary portion between the cover member 18 and the release sheet 16 on the floor base 12.

  By the way, in this case, as a measure for preventing the inflow of concrete, as in the past, for each of a plurality of vibration isolators, from a wound body of polyethylene film wound in a roll shape, a desired size at the construction site. A complicated manual operation such as drawing out and cutting the polyethylene film and covering the cut polyethylene film around the individual vibration isolator 17 becomes unnecessary.

  That is, in this embodiment, a cover member 18 (integral molded product) integrally formed by a mold is prepared in advance, and the cover member 18 is mainly covered with the vibration isolator 17 by a simple operation such as covering the concrete. Inflow prevention measures are achieved. Therefore, according to this embodiment, work efficiency is improved, and work quality non-uniformity (variation in the appearance of the covering portion for preventing inflow of concrete) according to the worker is improved.

  Next, after arranging the reinforcing core material 23 on the floor base 12 on which the release sheet 16 is laid and on the floor slab support member 17a of the vibration isolator 17 covered with the cover member 18 (after performing the bar arrangement), As shown in FIGS. 5 and 7, concrete is placed in the formwork 14 on which the reinforcing cores 23 are disposed on the floor base 12 and the floor slab support member 17a (S5). In the step of placing the concrete (S5), the concrete is placed so that the upper end surface of the tubular member 19 protrudes. Thereby, it can prevent that concrete flows in into the inside of the cylindrical member 19 in which the leveling bolt 17c is arrange | positioned at the time of concrete placement. Further, the placed concrete is solidified (cured and solidified) to form the floor slab 20 (S6).

  Finally, as shown in FIGS. 6 and 7, by raising the floor slab support member 17 a via the leveling bolt 17 c (for example, rotating the leveling bolt 17 c using the nut 22 and the jack-up handle), The floor slab 20 is lifted, for example, about 20 mm from the floor base 12 on which the release sheet 16 is laid (S7). At this time, as shown in FIG. 1, a gap 21 is formed on the floor base 12, thereby forming a floor structure 10 having a floating floor.

  When the floor slab 20 is lifted to a predetermined height, a lock nut (not shown) is screwed into the leveling bolt 17c as necessary, and the rotational position is fixed. Further, after the step of solidifying the concrete to form the floor slab 20 (S6) or after the step of floating the floor slab 20 (S7), the concrete upper surface of the tubular member 19 (floor slab 20). The portion protruding from the upper surface may be cut using a tool such as a sander. Furthermore, it is desirable that the opening at the upper end of the cylindrical member 19 obtained by cutting the protruding portion is filled with mortar or a cap is attached. As a result, water can be prevented from entering the cylindrical member 19 and a smooth floor surface can be formed.

  As described above, according to the floating floor construction method according to the present embodiment, the work of preventing the inflow of concrete into the vibration isolator 17 is realized by mainly applying the molded cover member 18. As a result, the work efficiency of the concrete inflow prevention work can be improved, the work can be made uniform, and the work quality can be improved.

  As mentioned above, although embodiment of this invention was described, this embodiment is shown as an example and is not intending limiting the range of invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 10 ... Floor structure, 12 ... Floor base, 14 ... Formwork, 15 ... Insulating member, 16 ... Release sheet, 17 ... Vibration isolator, 17a ... Floor slab support member, 17b ... Base part, 17c ... Leveling bolt, 17d DESCRIPTION OF SYMBOLS ... Elastic member, 18 ... Cover member, 18a ... Through-hole, 18b ... Recessed part, 18c ... Flange part, 19 ... Cylindrical member, 20 ... Floor slab, 21 ... Gap, 22 ... Nut, 23 ... Reinforcement core material.

Claims (4)

Laying a release sheet on the floor base;
An anti-vibration device including a base portion having elasticity, a floor slab support member supported on the base portion, and a leveling bolt for moving the floor slab support member up and down is provided on the floor base on which the release sheet is laid. The process of installing in
Enclosing the leveling bolt of the installed vibration isolator with a cylindrical member;
Covering the pedestal part of the installed vibration isolator, the floor slab support member, and the lower part of the tubular member with a molded cover member;
Placing concrete in a formwork in which reinforcing cores are disposed on the floor slab support member of the vibration isolator covered on the floor base on which the release sheet is laid and the cover member;
Solidifying the placed concrete to form a floor slab;
Raising the floor slab support member via the leveling bolt to float the formed floor slab from the floor base on which the release sheet is laid;
A floating floor construction method characterized by comprising:   2. The floating floor construction method according to claim 1, wherein in placing the concrete, the concrete is placed so that an upper end surface of the cylindrical member protrudes.   3. The floating floor construction method according to claim 1, wherein the cover member has a through-hole through which the cylindrical member passes and a recess corresponding to the shape of the floor slab support member.   The floating cover construction method according to any one of claims 1 to 3, wherein the cover member is formed of a thermoplastic resin.

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