JP2018178502A - Vibration insulation and sound insulation floor structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration insulation and sound insulation floor structure capable of reducing propagation of floor impact sound, generated by an upstairs floor, to a downstairs floor by improving weight floor impact sound insulating performance of a wooden building.SOLUTION: A vibration insulation and sound insulation floor structure 10 is provided at a floor part between an upper story 30 and a lower story 31 of a wooden building, and includes a floor substrate material 12 supported by floor support members 11a, 11b and laid on upper surfaces of the floor support members 11a, 11b, a sheet-like floating floor material 13 overlaid on an upper surface of the floor substrate material 12, and a heavy floor panel material 14 overlaid on an upper surface of the sheet-like floating floor material 13. The sheet-like floating floor material 13 forms a vibration insulation layer 16 which bears a load from the heavy floor panel material 14 in an elastically deformable state to suppress vibration from the heavy floor panel material 14 from reaching the floor substrate material 12. The heavy floor panel material 14 is formed by laying a plurality of unit floor panel members 15 side by side longitudinally and laterally on the upper surface of the sheet-like floating floor material 13.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an anti-vibration sound insulation floor structure, and more particularly to an anti-vibration sound insulation floor structure provided on a floor between an upper floor and a lower floor in a wooden building.

  For example, in a wooden building having two or more floors, the floor impact sound generated on the upper floor is less likely to be transmitted to the lower floor, and adverse effects such as noise can be avoided. Various devices have been made for this purpose. For floor impact sound, for example, when a child jumps or runs around, or a heavy floor impact sound which is an impact sound when a heavy object or the like falls, an accessory falls or a chair or furniture moves. There are lightweight floor impact sounds that are impact noises such as tips when installing and repositioning, and various noise insulation floor structures designed to reduce these impact sounds have been developed (see, for example, Patent Document 1). .

In the sound insulation floor structure of Patent Document 1, for example, a shock absorbing material made of synthetic rubber or the like is laid on a floor ground plate, and a floor ground material having a mass of 15 kg / m ² or more is laid on the shock absorbing material. The sound insulation performance is improved by the sound insulation floor structure formed by bonding and fixing the cushioning material and the floor base material to each other or through fixing by using a screw or the like.

  On the other hand, in recent years, as floor structures of wooden buildings such as wooden houses for two-family homes, weight floor impact sound blocking performance according to JIS A 1418-2: 2000, lightweight floor impact according to JIS A 1418-1: 2000 There is a need for a wooden building having a floor structure with high sound insulation performance that meets predetermined performances for sound insulation performance and room sound pressure level performance (sound insulation performance) according to JIS A 1417, and such A sound insulation floor structure has also been developed in which a floor structure with high sound insulation performance can be formed simply and compactly by combining commercially available materials (see, for example, Patent Document 2).

JP-A-11-141039 Patent No. 5258628 gazette

  In the sound insulation floor structure of Patent Document 2, it is possible to easily and compactly form a floor structure with high sound insulation performance specifications, but even in a wooden building, for example, a building for rental is constructed. From the point of view, it is being considered to satisfy the higher sound insulation performance such as LH-55 especially for heavy floor impact sound blocking performance as well as high standard condominiums etc. It is desirable to develop new technologies that make it possible to further improve

  The present invention further improves weight floor impact sound blocking performance particularly in wooden residential buildings, and effectively reduces the transmission of floor impact sounds generated on the upper floor floor to the lower floor floor. It is an object of the present invention to provide a vibration isolation floor structure capable of

The present invention relates to a vibration and sound insulation floor structure provided on a floor between an upper floor and a lower floor in a wooden building, which is supported by a floor support member and laid on the upper surface of the floor support member. A floor base material, a sheet-like floating floor material laid in an overlapping manner on the upper surface of the floor base material, and a weight per unit area of 50 to 50 kg laid on the upper surface of the sheet-like floating floor material It comprises 100 kgf / m ² of weight floor panel material, and the sheet-like floating floor material supports the load from the weight floor panel material so as to be elastically deformable, and the vibration from the weight floor panel material is The above object is achieved by providing an anti-vibration sound insulation floor structure in which an anti-vibration layer is formed to suppress transmission to the floor base material.

  And as for the anti-vibration sound insulation floor structure of this invention, it is preferable that the said weight floor panel material has a thickness of 30-100 mm.

  Moreover, as for the anti-vibration sound-insulation floor structure of this invention, it is preferable that the said weight floor panel material consists of a formation mortar board or a formation cement board.

  Furthermore, as for the vibration-proof sound insulation floor structure of this invention, it is preferable that the said sheet-like floating-floor material consists of felt sheet material of thickness 1-10 mm.

  Furthermore, in the vibration-insulation sound-insulation floor structure of the present invention, the weight floor panel material lays a plurality of unit floor panel members with a weight of 10 to 20 kg side by side vertically and horizontally on the sheet-like floating floor material. Preferably, it is formed by

  Further, according to the vibration-insulation sound-insulation floor structure of the present invention, the plurality of unit floor panel members drive the fixing bracket such as a fixing screw or a fixing nail at a joint between adjacent unit floor panel members. It is preferable to be fixed to the floor base material so as to be displaceable in the vertical direction and not to be displaced in the lateral direction.

  Further, in the vibration-insulation / sound-insulation floor structure of the present invention, at the joint between adjacent unit floor panel members, the overhang ring portion of one unit floor panel member and the overhang ring portion of the other unit floor panel member The unit floor panel member is vertically displaceable in the floor base material by inserting the fixing bracket into the pair of overlapping overhang ring portions and inserting the fixing bracket into the vertical direction. It is preferable to fix in the state which does not carry out position shift.

  According to the anti-vibration sound insulation floor structure of the present invention, the floor impact sound generated on the upper floor floor is transmitted to the lower floor floor by further improving the weight floor impact sound blocking performance particularly in a wooden house building. Can be mitigated effectively.

It is sectional drawing explaining the structure of the anti-vibration sound-insulation floor structure which concerns on one preferable embodiment of this invention. The weight floor panel material formed using several unit floor panel members is demonstrated, (a) is a partial top view, (b) is sectional drawing in alignment with AA of (a). It is a perspective sectional view of the B section of Drawing 2 (a) explaining the situation which fixes a unit floor panel member by driving in a fixing bracket in a joint part. (A)-(c) is sectional drawing along CC of FIG. 3 explaining the condition which fixes a unit floor panel member by driving in a fixing bracket in a joint part. It is a chart which shows the experimental result of the floor impact sound interruption | blocking performance performed about the vibration-insulation noise insulation floor structure of FIG. It is a chart which shows the experimental result of the room sound pressure level difference performance (sound insulation performance) performed about the anti-vibration sound insulation floor structure of FIG. It is a chart which shows the comparative experiment result of the weight floor impact sound interruption | blocking performance performed about the sound insulation structure of the anti-vibration sound-insulation floor structure of FIG. 1, and the comparative example 1. FIG.

  The vibration-insulation / sound-insulation floor structure 10 according to a preferred embodiment of the present invention shown in FIG. 1 is a wooden building, for example, a wooden house by a frame construction method or a frame wall construction method provided with multiple floors of two or more floors. In the building, on the floor between the upper floor 30 and the lower floor 31 which is also the ceiling of the lower floor 31, preferably the floor impact noise blocking performance according to JIS A 1418-2: 2000 is LH-55, JIS A Floor that specification that can exhibit high sound insulation performance that lightweight floor impact sound interception performance by 1418-1: 2000 meets performance such as D-50 between room sound pressure level difference performance (sound insulation performance) by LL-50, JIS A 1417 It was adopted as a structure. Moreover, the vibration-insulation / sound-insulation floor structure 10 of the present embodiment enables the floor portion having such high sound insulation performance to be formed compactly by preferably laying the respective materials manually by workers. In particular, it has a function to improve weight floor impact sound blocking performance and to effectively reduce the transmission of floor impact sound generated on the upper floor to the lower floor.

And the vibration-insulation sound insulation floor structure 10 of this embodiment is a floor structure provided in the floor part between the upper floor 30 and the lower floor 31 in a wooden building, Comprising: It is supported by floor support members 11a and 11b. Of the floor support member 11a and 11b, and the sheet-like floating floor material 13 and the sheet-like floating floor material 13 which are laid in a planar shape so as to overlap on the upper surface of the floor base material 12. The sheet-like floating floor material 13 is constructed by including the weight floor panel material 14 having a weight per unit area of 50 to 100 kgf / m ² laid over the upper surface, and the load from the weight floor panel material 14 is A resilient layer 16 is formed so as to be elastically deformable so as to suppress the transmission of vibrations from the weight floor panel material 14 to the floor base material 12.

  Further, in the present embodiment, the weight floor panel material 14 is preferably made of a molded mortar board or a molded cement board, and preferably has a thickness of 30 to 100 mm. The sheet-like floating floor material 13 is preferably made of a felt sheet material having a thickness of 1 to 10 mm.

  Furthermore, in the present embodiment, as shown in FIGS. 2 (a) and 2 (b), the weight floor panel material 14 includes a plurality of unit floor panel members 15 each having a weight of 10 to 20 kg. It is formed by laying side by side vertically and horizontally on the upper surface of 13.

  In the present embodiment, the floor support members 11a and 11b for supporting the floor base material 12 of the vibration-insulation and sound-insulation floor structure 10 are known members that form a framework of the floor portion of a wooden house construction. As such, the beam 11a, the floor joists 11b and the like are configured.

  As the floor base material 12 laid on the upper surfaces of the floor support members 11a and 11b, various known plate-like members marketed as floor base materials can be used. In the present embodiment, as the floor base material 12, a rigid floor panel of 24 mm in thickness made of cedar, for example, is used. The floor base material 12 is fixed to the floor support members 11a and 11b using, for example, a screw fixing member (not shown) such as a screw, a nail, a staple or the like in the same manner as a general construction method.

  The sheet-like floating floor material 13 laid on the upper surface of the floor base material 12 can use various well-known sheet materials made of felt obtained by forming a felt in a sheet form, for example. In the present embodiment, the sheet-like floating floor material 13 is preferably a felt sheet material having a thickness of 1 to 10 mm (4 mm in the present embodiment) as described above, and is superimposed on the upper surface of the floor base material 12 Laid in the shape of The sheet-like floating floor material 13 can be laid on the upper surface of the floor base material 12 in a state of being laid or in a state of being temporarily tacked appropriately, without fastening. The sheet-like floating floor material 13 supports the load from the weight floor panel material 14 so as to be elastically deformable, and functions as a vibration-proof layer 16 that suppresses the transmission of the vibration from the weight floor panel material 14 to the floor foundation material 12 Do.

The weight floor panel material 14 laid over the upper surface of the sheet-like floating floor material 13 preferably comprises a molded mortar board or a molded cement board as described above, and has a weight per unit area of 50 to 100 kgf / m ² It has become. Because of this, the weight floor panel material 14 has a considerable weight, so it is difficult to lay a large area of material at one time by, for example, a manual operation of a worker. For this reason, in the present embodiment, as described later, the weight floor panel material 14 is preferably divided into a plurality of unit floor panel members 15 having a weight of 10 to 20 kg, and the plurality of unit floor panel members 15 Are laid side by side vertically and horizontally on the upper surface of the sheet-like floating floor material 13 (see FIGS. 2 (a) and 2 (b)). In addition, at the joint portion 17 between the adjacent unit floor panel members 15 in the plurality of unit floor panel members 15 laid, the fixing bracket 18 such as a fixing screw and a fixed nail is driven into each unit floor panel member 15. Is fixed to the floor base material 12 in a vertically displaceable state and in a position not displaced in the left and right direction, thereby forming a weight floor panel material 14 in which these are integrated. . The weight floor panel material 14 formed of a formed mortar board or a formed cement board (in the present embodiment, a sound insulation mortar board) preferably has a thickness of 30 to 100 mm (in the present embodiment, 35 mm) as described above. ing.

  Further, in the present embodiment, an upper floating floor felt material is formed above the weight floor panel material 14 preferably formed of a sound insulation mortar board, which is formed by laying a plurality of unit floor panel members 15 vertically and horizontally. 19a, underlaying plywood 19b, hard gypsum board 19c, damping sheet 19d, overlying plywood 19e, and floor finish 19f are laid in an overlapping state.

  Similar to the sheet-like floating floor material 13, various kinds of sheet materials made of various known felts obtained by forming the felt into a sheet shape can be used as the overlying floating floor felt material 19 a. In the present embodiment, a felt sheet material preferably having a thickness of about 1 to 10 mm (4 mm in the present embodiment) can be used as the overlying floating floor felt material 19a. The overlay sheet-like floating floor material 19a can be laid on the upper surface of the weight floor panel material 14 in a state of being laid or in a state of being temporarily tacked as appropriate, without fastening.

  As the underclad plywood 19b, for example, various known plywoods having a thickness of about 5 to 24 mm, which are commercially available as structural plywood, can be used. In the present embodiment, for example, softwood plywood having a thickness of 12 mm can be preferably used.

  The hard gypsum board 19c may be, for example, various known gypsum boards having a thickness of about 9 to 21 mm, which are commercially available as gypsum boards for construction. In the present embodiment, hard gypsum boards each having a thickness of, for example, 12.5 mm can be preferably used.

The damping sheet 19d can use, for example, various known asphalt-based damping materials having a thickness of about 4 to 12 mm known as asphalt-based sound insulating materials. In the present embodiment, an asphalt sound insulation sheet having a thickness of about 8 mm, which is obtained by forming a damping material having a density 〜 of 2.3 to 3.0 g / cm ³ , for example, in sheet form as the damping sheet 19 d is preferable. It can be used. The damping sheet 19d can contribute to the reduction of heavy floor impact noise by its own weight.

  Similar to the underclad plywood 19b, various types of publicly known plywood having a thickness of about 5 to 24 mm, which is commercially available as structural plywood, can be used as the overclad plywood 19e. In the present embodiment, for example, softwood plywood having a thickness of 12 mm can be preferably used.

  As the floor covering material 19f, it is possible to use various known plate-like members marketed as a floor covering material, such as elastic flooring and veneer floor, for example. In the present embodiment, for example, a veneer floor having a thickness of 12 mm can be used. The veneer floor can be attached to the top surface of the overlying plywood 19e, preferably using a dedicated adhesive.

  In the present embodiment, the floating floor felt material 19a, the underplying plywood 19b, the hard gypsum board 19c, the damping sheet 19d, and the overply plywood 19e above the weight floor panel material 14 constituting the anti-vibration sound insulation floor structure 10. The floor coverings 19f are laid in an overlapping state, so that it is possible to further improve the light floor impact sound blocking performance and to realize appropriate floor softness at the time of walking. It becomes possible.

  Further, in the present embodiment, as shown in FIG. 1, the suspended ceiling 20 is attached below the floor support members 11 a and 11 b, and is stacked above the ceiling material 21 of the suspended ceiling 20. A sheet 22 and one or more layers (two layers in the first embodiment) of the fiber-based sound absorbing material 23 are provided.

  In the present embodiment, the suspended ceiling 20 is supported by a hanging member 25 extending downward from a hanging piece receiving member 24 disposed in a ceiling space below the floor base material 12. For example, it is formed by attaching the ceiling material 21 with a space of about 430 mm between the floor substrate 12 and the like. Above the ceiling material 21, a damping sheet 22 laid on the upper surface side of the steel edge 26 and a two-layer fiber-based sound absorbing material 23 are stacked.

  The ceiling material 21 can use various well-known plate-like members marketed as a base material for ceilings, or a finishing material. In this embodiment, for example, two reinforced gypsum boards with a thickness of 12.5 mm are used in a stacked state. The ceiling material 21 is fixed to the steel edge 26 using, for example, an adhesive, a screw, a staple, or the like, in the same manner as in a general construction method.

The vibration control sheet 22 laid on the upper surface side of the steel edge 26 is, for example, various known asphalt systems having a thickness of about 2 to 12 mm known as asphalt system sound insulation material, as the above-mentioned vibration control sheet 19d. A damping material can be used. In the present embodiment, an asphalt sound insulation sheet having a thickness of about 4 mm obtained by forming a damping material having a density 密度 of 2.3 to 3.0 g / cm ³ into a sheet shape as the damping sheet 22 is preferable. It can be used.

  As the one or more fiber-based sound absorbing material 23 laid on the upper surface of the damping sheet 22, various known glass wool or rock wool commercially available as a sound absorbing material for construction can be used. It is preferable that the total thickness of the one or more fiber-based sound absorbing materials 23 be 50 to 200 mm. In the present embodiment, glass wool having a thickness of, for example, 100 mm can be preferably used as the two-layer fiber-based sound absorbing material 23.

  By laying the damping sheet 22 above the ceiling material 21, it is possible to effectively reduce the vibration energy of the ceiling material 21 which is generated due to the sound pressure fluctuation of the space in the ceiling. Also, by laying one or more fiber-based sound absorbing materials 23 above the ceiling material 21 so that the total thickness is 50 to 200 mm, the peak of the sound pressure fluctuation generated in the space in the ceiling is effective. Can be reduced. In particular, by providing two fiber-based sound absorbing materials 23 of 100 mm thick glass wool, it is possible to effectively reduce the peak of the sound pressure fluctuation in the 63 Hz octave band band (44 to 88 Hz). .

And in this embodiment, as above-mentioned, the weight floor panel material 14 which comprises the anti-vibration sound insulation floor structure 10 becomes a weight of 50-100 kgf / m < ² > per unit area, Preferably it becomes a sound insulation mortar board Since it is difficult to lay a large-area one at a time, for example, manually by workers, as shown in FIGS. 2 (a) and 2 (b), it has a weight of 10 to 20 kg. The unit floor panel members 15 are formed by laying vertically and horizontally on the upper surface of the sheet-like floating floor material 13. In the present embodiment, the unit floor panel member 15 is a sound insulation mortar board having a square planar shape of, for example, 453 × 453 mm and a thickness of 35 mm, and preferably having a weight of 15 kgf / sheet. ing. As a result, the unit floor panel member 15 has a size that can be easily carried and laid by the worker's manual work.

  In the present embodiment, in order to form a weight floor panel member 14 in which a plurality of unit floor panel members 15 are arranged horizontally and vertically to form an integrated weight floor panel member 14, as shown in FIGS. 2 (a) and 2 (b), A grid-like joint portion in which a unit floor panel member 15 having a square planar shape is held on a sheet-like floating floor material 13 laid on the upper surface of the base material 12, for example, a gap with a width of about 2 mm Arranged vertically and horizontally so that 17 is formed. In addition, a plurality of unit floor panel members 15 arranged in rows and columns are driven at fixing joints 18 such as fixing screws and fixing nails at joint portions 17 between each pair of adjacent unit floor panel members 15. The floor base material 12 is fixed in a state in which it can be displaced in the vertical direction and in a state in which it is not misaligned in the lateral direction.

  That is, in the present embodiment, as shown also in FIG. 3, in each unit floor panel member 15, for example, a substantially semicircular notch in the central portion of each side edge portion of the four sides of the square planar shape. The portions 15a are formed, and in these notches 15a, the overhang ring portion 15b is attached so as to protrude outward from the unit floor panel member 15.

  The overhang ring portion 15 b is a metal fastener, and the embedded support portion 15 c and the ring main body portion 15 d are integrally formed. When manufacturing the unit floor panel member 15 made of a sound insulation mortar board, the overhang ring portion 15b embeds the embedded support portion 15c in the unit floor panel member 15 to obtain a substantially half portion on the tip side of the ring main body portion 15d. The unit floor panel member 15 is attached to the unit floor panel member 15 in a state in which the notch 15a is further protruded to the outer side than the edge where the notch 15a is formed. Further, the ring main body portion 15d of the overhang ring portion 15b is such that the ring main body portions 15d on both sides protrude at a position shifted in the height direction at the joint 17 between each pair of unit floor panel members 15 adjacent to each other. In the state where one is inclined upward and the other is inclined downward (see FIG. 4A). Thus, when the plurality of unit floor panel members 15 are arranged vertically and horizontally so as to form grid-like joint portions 17, in the joint portion 17 between each pair of adjacent unit floor panel members 15 The ring main body portion 15d of the overhang ring portion 15b of one unit floor panel member 15 can be disposed so as to overlap the ring main body portion 15d of the overhang ring portion 15b of the other unit floor panel member 15. The sheet-like floating floor material 13 is penetrated through the ring main body portion 15d of the pair of overlapping ring portions 15b, preferably with a slim screw, preferably a resin plug 27, interposed as the fixing bracket 18. The unit floor panel members 15 are vertically displaceable in the floor base material 12 by being driven toward the floor base material 12 (see FIG. 4C), and are positioned in the left and right direction. It will be fixed without shifting.

  Here, as shown in FIG. 3, for example, a slim screw having a diameter of a head of 5.85 mm, a diameter of a screw portion of 3.3 mm, and a length of 50 mm can be used as the fixing bracket 18. As the resin plug 27, for example, the diameter of the head portion 27a is 15.9 mm, and the diameter of the cylindrical insertion portion 27b is slightly smaller than the inner diameter of the ring main portion 15d of the overhang ring portion 15b attached to the unit floor panel member 15. A resin plug member having a length of 7 mm and a length of 19.5 mm can be used. The resin plug 27 is axially penetrated from the central portion of the head portion 27a to the tip of the cylindrical insertion portion 27b to form a screw driving hole 27c. On the outer peripheral surface of the cylindrical insertion portion 27b, a screw-like uneven portion is formed, and a pair of notch slits 27d are provided at positions opposed in the radial direction, and the shaft of the cylindrical insertion portion 27b It extends in the direction and is formed to have a length from the proximal end to the distal end on the side of the head 27a.

  In this embodiment, when fixing each unit floor panel member 15 to the floor base material 12 by driving the fixing bracket 18 at the joint 17 between each pair of adjacent unit floor panel members 15, as shown in FIG. As shown in FIGS. 4 (a) and 4 (b), the cylindrical insertion portion 27b is inserted into the ring main body portion 15d of the pair of overlapping ring portions 15b, and the resin plug 27 is mounted. After that, the fixing fitting 18 is inserted from above the joint portion 17 into the ring main body portion 15d of the pair of overlapping ring portions 15b by penetrating the screw driving hole 27c of the mounted resin plug 27. Then, as shown in FIG. 4 (c), the sheet-like floating floor material 13 is penetrated and driven toward the floor base material 12. As a result, each of the plurality of unit floor panel members 15 arranged in rows and columns is fixed to the floor base material 12 so as to be vertically displaceable and not displaced in the lateral direction. Together form a weight floor panel material 14.

  Further, in the present embodiment, as described above, in the state in which the resin plug 27 mounted to the pair of overlapping overhang ring portions 15b is interposed, the fixing bracket 18 is inserted and punched through the overhang ring portion 15b. It is supposed to be. In the resin plug 27, the fixing fitting 18 penetrates through the screw-in hole 27c of the resin plug 27 so that the pair of diametrically opposed notched slits 27d is expanded at a portion lower than the head portion 27a. As a result, the cylindrical insertion portion 27b is deformed to a diameter-expanded state (see FIG. 4C). As a result, the outer peripheral surface of the cylindrical insertion portion 27b of the resin plug 27 easily adheres to the inner peripheral surface of the ring main portion 15d of the pair of overhang ring portions 15b, and the lower portion is lower than the ring main portion 15d. Since the cylindrical insertion portion 27b is expanded in diameter larger than the inner diameter of the ring main body portion 15d at the part of (4), it is possible to prevent the resin plug 27 from falling off from the ring main body portion 15d. Moreover, it becomes possible to fix each unit floor panel member 15 to the floor base material 12 in a more stable state so as to be displaceable in the vertical direction and not to be displaced in the lateral direction.

  Each of a plurality of unit floor panel members 15 arranged in rows and columns is fixed in the joint portion 17, and the weight floor panel material 14 in which these are integrated is stacked on the upper surface of the sheet-like floating floor material 13. After laying, as described above, the upper floating floor felt material 19a, the lower ground plywood 19b, the hard gypsum board 19c, and the vibration control sheet 19d are further provided above the heavy weight floor panel material 14 laid. The sheet-like floating floor material 13 laid on the upper surface of the floor base material 12 and the weight floor panel material 14 are constructed by laying the tensioned plywood 19e and the floor finish material 19f in a superimposed state. The vibration-insulation noise floor structure 10 of the present embodiment is formed.

  And according to the vibration-insulation sound insulation floor structure 10 of this embodiment provided with the above-mentioned structure, the floor impact sound produced in the floor 30 of the upper floor is further improved in the wooden house building, in particular, by further improving the weight floor impact sound blocking performance. Is effectively transmitted to the floor 31 of the lower floor.

That is, according to the present embodiment, the anti-vibration sound insulation floor structure 10 is supported by the floor support members 11a and 11b, and the floor base material 12 laid on the upper surface of the floor support members 11a and 11b; The sheet-like floating floor material 13 laid on the upper surface of the sheet and the weight floor panel having a weight per unit area of 50 to 100 kgf / m ² laid on the upper surface of the sheet-like floating sheet 13 The sheet-like floating floor material 13 elastically supports the load from the weight floor panel material 14 so that the vibration from the weight floor panel material 14 is applied to the floor foundation material 12. Since the vibration-proof layer 16 for suppressing transmission is formed, the weight floor panel material 14 having a considerable weight functions to reduce vibration and impact, and the sheet-like floating floor material 13 functions as the vibration-proof layer 16. Vibration and shock are transmitted For example, when a child jumps or runs around, or when a heavy object falls, the weight floor impact sound, which is an impact sound, is generated by a synergetic effect with the action of preventing To effectively reduce transmission to the floor, preferably the floor impact sound blocking performance according to JIS A 1418-2: 2000 is LH-55, and the floor impact sound blocking performance according to JIS A 1418-1: 2000 is LL. It becomes possible to form a residential building provided with a floor structure of high sound insulation performance specification satisfying the performance such as D-50, and the inter-room sound pressure level difference performance (sound insulation performance) according to JIS A 1417 according to JIS A 1417.

  Further, according to the present embodiment, the weight floor panel material 14 is formed by laying a plurality of unit floor panel members 15 each having a weight of 10 to 20 kg on the upper surface of the sheet-like floating floor material 13 in a matrix. Since it is possible to lay the weight floor panel material 14 by the manual work of the workers, the laying work can be simplified by laying the sheet-like floating floor material 13 in a simple manner, and the workability It is possible to improve

  Furthermore, according to the present embodiment, the plurality of unit floor panel members 15 are fixed to the floor base material 12 by driving the fixing bracket 18 at the joint portion 17 between the adjacent unit floor panel members 15 and thus the weight floor Since the panel members 14 are formed, each unit floor panel member 15 is fixed to the floor base member 12 so as to be displaceable in the vertical direction and not to be displaced in the lateral direction in a stable manner. It will be possible to

The present invention is not limited to the above embodiment, and various modifications can be made. For example, the weight floor panel material does not necessarily have to be a molded mortar board or a molded cement board, and may be other various floor panel materials having a weight per unit area of 50 to 100 kgf / m ² . Moreover, the sheet-like floating floor material does not necessarily need to be a felt sheet material, and supports the load from the weight floor panel material so as to be elastically deformable, and the vibration from the weight floor panel material is used for the floor foundation material. It may be other various sheet-like members capable of forming an anti-vibration layer that suppresses transmission. The weight floor panel material need not necessarily be formed by laying a plurality of unit floor panel members side by side in a row, and may be formed of a single floor panel material.

  Hereinafter, although the vibration-insulation noise insulation floor structure of this invention is demonstrated in more detail by an Example, this invention is not limited to these.

  The sound insulation structure having the same configuration as that of the vibration insulation and sound insulation floor structure 10 of the embodiment shown in FIG. 1 is the vibration insulation and sound insulation structure of the first embodiment. With respect to the anti-vibration sound insulation structure of Example 1, according to JIS A 1418, experiments are conducted on heavy floor impact sound blocking performance and light floor impact sound blocking performance, and JIS A 1417 (a method of measuring air sound blocking performance of a building) According to, the experiment was conducted on the inter-room sound pressure level difference performance (sound insulation performance) between the space in the upper floor and the space in the lower floor. The experimental results are shown in FIG. 5 and FIG. The sound source room is between the upper floor and the upper floor, and the sound reception room is between the lower floor and the lower floor.

  It is equipped with the same structure as the anti-vibration sound insulation structure of Example 1 except that a sheet-like floating floor material is not provided between the 35-mm-thick molding mortar board and the 24-mm-thick rigid floor panel. The sound insulation structure is the sound insulation structure of Comparative Example 1. With respect to the anti-vibration sound insulation structure of Example 1 and the sound insulation structure of Comparative Example 1, an experiment was conducted on heavy-floor impact sound blocking performance according to JIS A 1418. The experimental results are shown in FIG. The sound source room is between the upper floor and the upper floor, and the sound reception room is between the lower floor and the lower floor.

  According to the experimental results shown in FIG. 5 to FIG. 7, the vibration isolation and sound insulation structure of Example 1 according to the present invention is superior to the noise isolation structure of Comparative Example 1 in the sound insulation performance particularly for heavy floor impact sound blocking performance. It turns out that it is equipped.

10 Vibration isolation sound insulation floor structure 11a floor support member (beam)
11b Floor support member (floor joist)
12 floor base material 13 sheet-like floating floor material 14 weight floor panel material 15 unit floor panel member 15a notch portion 15b overhang ring portion 15c embedded support portion 15d ring main body portion 16 anti-vibration layer 17 joint portion 18 fixing bracket 19a Floor felt material 19b Underlayment plywood 19c Hard gypsum board 19d Vibration control sheet 19e Overlay plywood 19f Floor finish 20 Suspended ceiling 21 Ceiling material 22 Vibration damping sheet 23 Fiber-based sound absorbing material 24 Suspension receiving member 25 Suspension member 26 Steel Field edge 27 Resin plug 27a Head 27b Tubular insertion part 27c Screw penetration hole 27d Thread-like uneven part 27d Notch slit 30 Upper floor 31 Lower floor

Claims (7)

In a wooden building, it is an anti-vibration sound insulation floor structure provided on the floor between the upper floor and the lower floor,
A floor base material supported by a floor support member and laid on the upper surface of the floor support member, a sheet-like floating floor material laid on the top surface of the floor base material, and the sheet-like floating floor And including a weight floor panel material having a weight per unit area of 50 to 100 kgf / m ² , laid over the top surface of the material;
The sheet-like floating floor material supports the load from the weight floor panel material so as to be elastically deformable, and forms a vibration-proof layer that suppresses the transmission of the vibration from the weight floor panel material to the floor foundation material. Anti-vibration sound insulation floor structure.   The anti-vibration sound insulation floor structure according to claim 1, wherein the weight floor panel material has a thickness of 30 to 100 mm.   The anti-vibration sound insulation floor structure according to claim 1 or 2, wherein the weight floor panel material is a formed mortar board or a formed cement board.   The anti-vibration sound insulation floor structure according to any one of claims 1 to 3, wherein the sheet-like floating floor material is a felt sheet material having a thickness of 1 to 10 mm.   The said weight floor panel material is formed by arranging a plurality of unit floor panel members with a weight of 10 to 20 kg vertically and horizontally on the upper surface of the sheet-like floating floor material. Anti-vibration sound insulation floor structure according to 1 or 2.   A state in which a plurality of unit floor panel members can be vertically displaced in the floor base material by driving fixing fixtures such as fixing screws and fixed nails at joint portions between adjacent unit floor panel members. The anti-vibration sound insulation floor structure according to claim 5, wherein the anti-vibration sound insulation floor structure is fixed without being displaced in the lateral direction.   At the joint between the adjacent unit floor panel members, a pair of extension rings formed by overlapping the extension ring portions of the other unit floor panel members on the extension ring portions of one of the unit floor panel members. The unit floor panel member is fixed to the floor base material so as to be vertically displaceable and not displaced in the left and right direction by inserting the fixing bracket by inserting into the part. Vibration-insulation noise floor structure according to paragraph 6.