Partition wall

Abstract

To provide a partition wall using wood finishing material and having excellent sound insulation performance.SOLUTION: A partition wall P includes sound insulators 11 and 12 arranged and erected facing each other at a predetermined interval, a wood finishing material 20 covering the surface of at least one of the sound insulators 11 and 12, and a support member 30 for the sound insulators 11 and 12 and the wood finishing material 20, which is interposed between the sound insulators 11 and 12. At a butt joint 25 of the wood finishing material 20, a flange 31b of the support member 30 is in contact with the sound insulator 11. The wood finishing material 20 is attached to the flange 31b of the support member 30 by means of a fitting (screw 17) that passes through the sound insulators 11 and 12.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a partition wall for a structure using wood materials. [Background technology]

[0002] Standards for the sound insulation performance of partition walls are set by the Building Standards Act, and typically, partition walls in apartment buildings are required to be equivalent to Class Rr-40 (sound transmission loss class specified in Japanese Industrial Standard A1419-1). However, for residential use such as homes and hotels, and for use in conference rooms and other places where privacy is required, even higher performance is required, and the sound insulation performance of the partition wall alone is required to be around Class Rr-55.

[0003] As partition walls with excellent sound insulation performance for use in structures, there are partition wall structures such as single-runner staggered stud construction, in which the wall end is abutted against another architectural structure and the wall end connected to the architectural structure is at least partially exposed to the architectural space. This partition wall structure has end posts arranged at the wall end and composed of first and second end post members, and a gap or insulating band that separates the end post members from each other and blocks the propagation of solid-state vibrations, and the architectural interior surface material that defines the architectural space on one side of the partition wall is fixed to the first end post member, and the architectural interior surface material that defines the architectural space on the other side of the partition wall is fixed to the second end post member (Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Re-tabled publication No. 2019-172040 Summary of the Invention [Problem to be solved by the invention]

[0005] Recently, society has been demanding the active use of wood, and it is recommended to use various wood materials as wood finishing materials for partition walls. On the other hand, wooden partition walls often have poor sound insulation performance due to the small mass of the wooden material, and when used as the main structure of a sound insulation wall, it is necessary to use multiple panels to increase the air gap between the panels, and to cover the wooden material with a material that has a larger mass.

[0006] However, the conventional partition wall structures are primarily intended for lightweight hollow partition walls with steel wall bases, and are not necessarily suitable for partition wall structures made of wood. Therefore, there has been a demand for the development of a partition wall made of wood that is easy to install and has a certain level of sound insulation performance.

[0007] The present invention has been made to solve the above problems, and its object is to provide a partition wall that uses wood finishing materials and has excellent sound insulation performance, and that can accommodate the mass and thickness of the material. [Means for solving the problem]

[0008] In order to solve the above-mentioned problems, the partition wall of the present invention (hereinafter, sometimes referred to as "this partition wall") comprises sound insulators that are erected facing each other with a predetermined gap between them, a wood finishing material that covers the surface of at least one of the sound insulators, and a support member for the sound insulators and the wood finishing material, which has a vertical portion and flange portions on both sides of the vertical portion and is interposed at a predetermined gap between the sound insulators, and a countersunk portion into which a fastener is embedded is provided at a predetermined position on the end of the surface of the wood finishing material, and the wood finishing material is formed in pieces, and the ends of adjacent wood finishing materials are butt-jointed, and the sound insulators abut against the flange portion of the support member at at least one joint of the butt-joint, and the wood finishing material is supported by the fastener that penetrates the sound insulator. and fasteners As a result, the flange portion of the support member Removable The present invention is characterized in that a blocking material is provided in the counterbore portion.

[0009] Here, the sound insulator is a member for achieving sound insulation performance, and can be a known member such as gypsum board, plywood, vibration absorbing material, etc. Note that the sound insulator may be provided by stacking a plurality of sheets in the thickness direction.

[0010] The wood finishing material is a material applied to the surface where wood materials (lumber, laminated lumber, plywood, fiberboard, etc.) are used. The wood finishing material may be attached to only one of the sound insulators that make up the partition wall. There are also no restrictions on the position or number of joints of the wood finishing material, which is formed in separate pieces.

[0011] The mounting fixtures may be screws, nails, or other elements capable of firmly fixing the wood finishing material and the sound insulating body to the support member.

[0012] The support member has a vertical portion and a flange portion, and by attaching the sound insulator and the wood finishing material to the flange portion, it serves as a support member for both components. In particular, the support member is preferably an open cross-section member (meaning "a member that does not have any part that has a closed cross-section shape"), and is particularly preferably made from an open cross-section member formed by joining the webs of two channel steel beams, an H-shaped steel beam, or an I-shaped steel beam (each of which may have a lip portion formed), as this forms flange portions that are symmetrical on the left and right sides of the vertical portion, does not have gaps in the cross section of the member, and does not cause factors that deteriorate sound insulation performance such as resonance in the gaps.

[0013] Furthermore, in this partition wall, when the wall height is large or the mass of the wood finishing material is large, it is preferable for the vertical portion of the support member to be equipped with a columnar body, as this can firmly support the wood finishing material. In addition, when joining the webs of two channel steel beams, the joining method can be any, such as welding, bolt joining, screw joining, etc.

[0014] Furthermore, if the partition wall is provided with a lining member made of a plate or elastic material interposed between the sound-insulating body and the support member, this is preferable because it can improve the bonding between the sound-insulating body and the support member and also enhance the sound-insulating performance.

[0015] Furthermore, if sound-absorbing material is interposed in the space between each of the sound-insulating bodies that are erected opposite each other in this partition wall, this is even more preferable, as it can improve the sound-insulating effect. The sound-absorbing material can be any known material such as porous material (glass wool, rock wool, etc.), vibration material (membrane-like film material, sheet material, etc.), and resonance material (punched metal, perforated board, etc.), as long as it is provided in at least a part (or the entire area) of the space between each sound-insulating body.

[0016] This partition wall has a support member that serves both as a sound insulator and a wood finish, which is attached with a fixture that penetrates the sound insulator. Because the sound insulation performance of this partition wall is primarily achieved by the sound insulator, the material and thickness of the wood finish can be freely determined based on the required design, the amount of wood used, and the effective dimensions of the building space. This avoids the negative impact of reducing the effective dimensions of the building space and prevents damage to the wall material due to lighting and other equipment. Furthermore, by making the wood finish board thickness equal to or greater than the installation dimensions of the equipment, it is possible to avoid damage to the sound insulator and avoid the exposed installation of equipment, which is undesirable from a design perspective, and to make the equipment and the finished surface flush.

[0017] Furthermore, since a wood finishing material is provided on the surface of the sound insulation body and there is no air layer between the sound insulation body and the wood finishing material, the possibility of resonance due to the air layer can be eliminated.

[0018] Furthermore, with this partition wall, the flanges of the support members are attached so that they abut against the sound-proofing material at positions corresponding to the ends of each wood finishing material at the butt joints, which prevents unsupported areas at the ends of the wood finishing material and prevents problems such as warping, chipping, and cracking of the wood finishing material. [Effects of the Invention]

[0019] According to the present invention, it is possible to provide a partition wall with excellent sound insulation performance that uses wood finishing materials and is capable of handling the mass and thickness of the wall. Therefore, it is possible to realize a dry partition wall that is composed of a sound insulator and wood finishing materials and achieves high sound insulation performance. This effectively solves the problems of the complexity of construction required to achieve sound insulation performance in a space and the reduction in the effective dimensions of a building space caused by installing multiple wall bodies. [Brief explanation of the drawings]

[0020] [Figure 1] 1(a) is a horizontal cross-sectional view of a partition wall of the present invention, and FIG. 1(b) is an enlarged view of the X portion. [Figure 2] FIG. 2 is a side view showing the support member installation step in the partition wall construction method of the present invention. [Figure 3] FIG. 2 is a side view showing a first stage of the sound insulation installation step in the partition wall construction method of the present invention. [Figure 4] FIG. 4 is a side view showing a second stage of the sound insulation installation process in the partition wall construction method of the present invention. [Figure 5] FIG. 2 is a side view seen from the first room side, showing the wood finishing material installation step in the partition wall construction method of the present invention. [Figure 6] FIG. 2 is a side view seen from the second room side, showing the wood finishing material installation step in the partition wall construction method of the present invention. [Figure 7] FIG. 10 is a horizontal cross-sectional view showing a modified example of the partition wall of the present invention. [Figure 8] FIG. 10 is a horizontal cross-sectional view showing another modified example of the partition wall of the present invention. [Figure 9] 1 is a graph showing the results of an acoustic performance test conducted to verify the effect of the partition wall of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, with reference to the drawings, a detailed description will be given of an example of an embodiment of the present partition wall P. In the description based on the drawings, the same elements are given the same reference numerals, and duplicated description will be omitted.

[0022] (1) Embodiment of this partition wall [Main partition wall structure] The partition wall P of the first embodiment is installed in a space (hereinafter referred to as "rectangular space S") (Fig. 2) that is rectangular in side view and surrounded by two pillars on both the left and right sides, a ceiling, and a floor surface F. Vertical frames W1, W2 and an upper frame W3 are installed on the end faces of the left and right pillars and the underside of the ceiling in the rectangular space S.

[0023] This partition wall P comprises two sound insulators 11, 12 on each side, which are erected facing each other at a predetermined distance, a wood finishing material 20, and support members 30 for each of the sound insulators 11, 12 and the wood finishing material 20 (Figure 1).

[0024] The support member 30 is formed by joining the upper and lower ends of the webs 31a of two lip channel steel members 31 that are identically shaped and arranged symmetrically, using bolts and nuts (not shown). The support members 30 are erected on the floor surface F at predetermined intervals (nine in this embodiment) between the left and right vertical frames W1, W2, with the flanges 31b parallel to the wall core (with the webs 31a perpendicular to the wall core) (Fig. 2). The support members 30 are provided at positions corresponding to the joints 25 (butt joints) of the first sound insulator 11, the second sound insulator 12 and the wood finishing material 20, and near the left and right vertical frames W1, W2.

[0025] Two layers of gypsum board are provided on both sides of the support member 30, serving as sound insulators 11 and 12 (the inner sound insulator in this partition wall P is referred to as the "first sound insulator 11" and the outer sound insulator is referred to as the "second sound insulator 12." For ease of explanation, the lower side of the support member 30 in FIG. 1 is referred to as the "first chamber" and the upper side as the "second chamber.") The entire surface of the second sound insulator 12 is covered with CLT (cross-laminated timber), a wood finishing material 20. The first sound insulator 11, the second sound insulator 12 and the wood finishing material 20 are formed in separate pieces so as to have predetermined dimensions.

[0026] The first sound insulation body 11 abuts against the entire surface of the flange 31b of each support member 30 located at the joint 25 of the wood finishing material 20 on the first room side, with a plate-shaped cushioning material 16 (laying member) made of an elastic material interposed between them, and the first sound insulation body 11 is attached to the flange 31b with screws (not shown) (in this embodiment, 2 rows horizontally x 5 rows vertically = 10 pieces) (Figure 3).

[0027] In addition, the flanges 31b of the support members 30 that are not located at the joints 25 of the wood finishing material 20 on the first room side and the first sound-insulating body No buffer material 16 is interposed between the layers 11, and a gap (gap) is formed. Furthermore, sound absorbing material 15 is interposed in almost the entire space between the two first sound insulators 11 standing opposite each other.

[0028] The entire surface of the first sound insulator 11 is covered with the second sound insulator 12. That is, the first sound insulator 11 is bonded to the second sound insulator 12 with an adhesive so as to prevent any gaps (air gaps), and the second sound insulators 12 are attached with staples (not shown) (in this embodiment, 7 horizontal rows x 2 vertical rows = 14 pieces) (FIG. 4). In addition, the entire surface of the second sound insulator 12 is covered with wood finishing material 20 so as to prevent any gaps (air gaps) (in this embodiment, 4 pieces on the first room side).

[0029] As with the first chamber side, the flanges 31b of each support member 30 on the second chamber side are provided with a first sound insulator 11, a second sound insulator 12 and wood finishing materials 20 (five pieces on the second chamber side in this embodiment).

[0030] On both the first and second chamber sides, the joints 25 of the wood finishing materials 20 are formed at the position of every other support member 30, and the positions of the joints 25 of the wood finishing materials 20 in the longitudinal direction are staggered (staggered) on the first and second chamber sides. Therefore, the attachment positions and number of wood finishing materials 20 are different (FIGS. 5 and 6). The first sound insulator 11, second sound insulator 12, and wood finishing materials 20 on one side are attached to one flange 31b of one support member 30. The first sound insulators 11 are also attached to the flanges 31b of every other support member 30.

[0031] At a predetermined position on the surface of each wood finishing material 20 at the end, a counterbore 20a is provided. moat Screws 17 (mounting fixtures) are embedded in the portions 20a, and the screws 17 pass through the second sound insulator 12 and the first sound insulator 11 and are attached to the flanges 31b of the support member 30. With the above configuration, the wood finishing materials 20 on both sides, the second sound insulator 12, and the first sound insulator 11 are integrated to form the main partition wall P.

[0032] In addition, the left and right wood finishing materials 20 adjacent to the upper frame W1 and lower frame W2 are attached to the flanges 31b of the support member 30 by screws 17 that pass through the second sound insulating body 12 and the first sound insulating body 11. In addition, a sealing material 26 is provided in each of the countersunk grooves 20a, and the screw heads are hidden, improving the design. moat A portion 20a and a blocking material 26 are provided.

[0033] [Main partition wall construction method] The construction method for the main partition wall P will now be briefly explained. The construction method for the partition wall P includes (1) a support member installation step, (2) a sound insulator installation step, and (3) a wood finishing material installation step.

[0034] (1) Support member installation process The support member installation step is a step of erecting the support members 30 at predetermined intervals in the rectangular space S so that the flanges 31b are parallel to the wall core (FIG. 2).

[0035] (2) Soundproofing installation process The sound insulator installation step is a step of attaching the first sound insulator 11 and the second sound insulator 12 to the flanges 31b on both sides of the support member 30 (FIG. 3). The first sound insulators 11 are attached to the flanges 31b of the support member 30 with screws (not shown), and sound absorbing material 15 is interposed in the space between the opposing first sound insulators 11. Then, the second sound insulator 12 is attached to the surface of the first sound insulators 11 with an adhesive and fixed in place with staples (not shown) (FIG. 4).

[0036] (3) Wood finishing material installation process The wood finishing material installation process involves attaching wood finishing materials 20 to the surfaces of the second sound insulators 12 on both sides, and attaching the wood finishing materials 20 to the flanges 31b of the support member 30 with screws 17 that pass through the second sound insulators 12 and the first sound insulators 11 (FIGS. 5 and 6). In this way, the second sound insulators 12 and the first sound insulators 11 are sandwiched between the wood finishing materials 20, integrating them.

[0037] [Effects of the main partition wall] This partition wall P has a support member 30 that serves as a dual-purpose member for supporting the first and second sound insulators 11, 12, and the wood finishing material 20, and the wood finishing material 20 is attached with screws 17 that penetrate the first and second sound insulators 11, 12. Because the sound insulation performance of this partition wall P is primarily achieved by the first and second sound insulators 11, 12, the material and thickness of the wood finishing material 20 can be determined arbitrarily based on the required design, the amount of wood used, or the effective dimensions of the architectural space.

[0038] This avoids the adverse effects of reducing the effective dimensions of the building space and makes it possible to avoid damage to wall materials due to lighting and other equipment. Furthermore, with this partition wall P, by making the thickness of the wood finishing material 20 equal to or greater than the installation dimensions of the equipment, it is possible to make the equipment and the finished surface flush without damaging the first sound insulator 11 and the second sound insulator 12 and avoiding exposed installation of the equipment, which is undesirable from a design perspective. Furthermore, according to this partition wall P, a wood finishing material 20 is provided on the surface of the second sound insulating body 12, and since there is no air layer between the first sound insulating body 11 and the second sound insulating body 12 and the wood finishing material 20, the possibility of resonance due to the air layer can be eliminated.

[0039] In this way, the partition wall P can be a dry partition wall that achieves high sound insulation performance, consisting of the first sound insulator 11, the second sound insulator 12, and the wood finishing material 20. Therefore, it is possible to expose the wood finishing material 20, which increases the amount of wood used.

[0040] Furthermore, the joints 25 of the wood finishing materials 20 and the first sound insulators 11 of this partition wall P are formed at the position of every other support member 30, and the positions of the joints 25 of the wood finishing materials 20 in the longitudinal direction on the first room side and the second room side are staggered (staggered). One of the first sound insulators 11, second sound insulator 12, and wood finishing material 20 (hereinafter, the first sound insulator 11, second sound insulator 12, and wood finishing material 20 will be referred to as the "wood finishing material 20, etc.") is attached to the flange 31b of one support member 30 with screws 17. Therefore, the wood finishing materials 20 etc. on both sides are not joined through the same support member 30, and the edge between one wood finishing material 20 etc. and the other wood finishing material 20 etc. is disconnected (there is a gap between the other first sound-insulating body 11 and the flange 31b of the support member 30), so sound insulation propagation due to vibration propagation from one wood finishing material 20 to the other wood finishing material 20, and from the other wood finishing material 20 to one wood finishing material 20, can be reduced.

[0041] Furthermore, in this partition wall P, a buffer material 16 is interposed between the first sound insulating body 11 and the support member 30, thereby improving the bonding between the first sound insulating body 11 and the support member 30 and enhancing the sound insulating performance. Furthermore, in the main partition wall P, the sound absorbing material 15 is interposed in the space between the first sound insulators 11 that are erected opposite each other, so that the sound insulating effect can be improved.

[0042] (2) Other embodiments of this partition wall A modified example of another embodiment of the partition wall P will be described. First, when the partition wall P' is high or the wood finishing material 20' is heavy, the upper and lower ends of the webs 31a of the two lip channel steel members 31 are joined using bolts and nuts (not shown). In the support member 30, suitable locations of reinforcing rectangular steel pipes 33' (columnar bodies) can be joined with bolts 34' and nuts 35' between the webs 31a to form a support member 30' (hereinafter referred to as the "support member of the second embodiment" in the description of the examples) with increased rigidity (FIG. 7). In this and the following embodiments, the sound insulator 11' is formed as a single piece.

[0043] Furthermore, if high sound insulation performance is not required for the partition wall P", the sound insulators 11' and wood finishing materials 20' on both sides may be attached to the support member 30' of the second embodiment (hereinafter referred to as the "partition wall P" of the third embodiment in the explanation of the examples) (Fig. 8). In this case, as with the partition wall P of the first embodiment, cushioning material may be interposed between the sound insulators 11' and wood finishing materials 20' on both sides. In this embodiment, the joints 25' of the wood finishing materials 20' on both sides are located at the same position in the longitudinal direction, and the joints 25' of the wood finishing materials 20' on one side do not have a seat groove 20a'.

[0044] Furthermore, the support member may be provided with bolts (fixtures) that penetrate the wood finishing material, and the wood finishing material may be fixed with bolts and nuts (fasteners) to removably attach the wood finishing material (not shown). This configuration makes the wood finishing material replaceable, making it possible to respond even if the wood finishing material deteriorates.

[0045] The above describes one example of a preferred embodiment of the present invention, but the present invention is not limited to this embodiment, and appropriate design changes can be made to each element within the scope of the present invention.

[0046] As described above, there are no restrictions on the various aspects of the soundproofing material, wood finishing material, supporting members, etc. that make up this partition wall, and the most suitable components can be adopted, and their shape, dimensions, etc. can be appropriately determined depending on the construction location. Furthermore, the present partition wall is an example of the minimum necessary components, and other necessary components may be added as long as they do not impede the effects of the present invention. [Example]

[0047] [Verification of the effectiveness of the main partition wall] Acoustic performance tests were conducted to verify the effectiveness of this partition wall.

[0048] (Test specimen) The specimen 1 has the same structure as the partition wall P of the first embodiment (FIG. 1). The specimen 2 has the same structure as the main partition wall P'' (FIG. 8) of the third embodiment. Specimen 3 has a structure similar to that of the partition wall P'' (FIG. 8) of the third embodiment, but without the wood finishing materials 20' on both sides.

[0049] The main specifications of the components of each test specimen are as follows: Rectangular space: width 4000mm x height 2500mm Support member: lipped channel steel (web 100 mm x flange 50 mm x lip 20 mm x Two pieces (2.3m thick x 2490mm long) joined together First sound insulator, second sound insulator and sound insulator: Reinforced gypsum board (21mm thick) Yoshino Gypsum Co., Ltd. Tiger Board [Registered Trademark] Type Z JIS A 6901 Reinforced Gypsum Board GB-F Wood finishing material: CLT (cedar, strength grade Mx60, thickness 60mm) Meiken Kogyo Co., Ltd. 3 layers, 3 ply lamina thickness 20mm x 3 CLT thickness 60mm Sound-absorbing material: Rock wool (JFE Rock Fiber Corporation) Roxeram Felt 50mm thick x 2 sheets 40kg / m 3 )

[0050] (Test Method) Based on JIS A 1416:2000 "Method for measuring the airborne sound insulation performance of building components in a laboratory," the sound pressure level of the sound incident on the sound insulator and the sound pressure level transmitted through it were measured in six frequency bands with center frequencies of 125 Hz, 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, and 4000 Hz, and the sound transmission loss was calculated. Note that in the measurements, the first room in the description of the above embodiment was considered to be the sound source room, and the second room was considered to be the sound receiving room.

[0051] (Test results) The results of the acoustic performance tests are shown in Figure 9 (the horizontal axis represents frequency (Hz) and the vertical axis represents sound transmission loss (dB)). In the figure, the measured sound transmission loss values ​​for test specimen 1 are represented by diamonds, those for test specimen 2 by triangles, and those for test specimen 3 by crosses. To aid in the evaluation of the test results, the figure also displays the Rr-55, Rr-50, and Rr-45 grades based on JIS A 1419-1:2000, "Methods for evaluating the sound insulation performance of buildings and building components - Part 1: Airborne sound insulation performance," using dotted lines.

[0052] According to the results of the acoustic performance test, Test Specimen 1 achieved good results exceeding the Rr-55 standard. Furthermore, the results for test specimen 2 exceeded the standard for the Rr-45 grade. According to these results, compared to test specimen 1, the sound insulation performance was reduced in some frequency bands because the sound insulation bodies 11' on both sides were attached to the same support member 30', but the sound transmission loss above 2000 Hz was greater than that of test specimen 3, and it was confirmed that a certain degree of sound insulation effect was achieved by directly layering the wood finishing material 20' on the surface of the sound insulation body 11'. Furthermore, the test piece 3 exceeded the standard of the Rr-50 grade. This result confirmed that the sound insulator 11' provides a certain degree of sound insulation effect. [Explanation of symbols]

[0053] P,P',P” Partition wall 11 First sound insulator 11' sound insulation 12 Second sound insulator 15 Sound-absorbing material 16 Cushioning material (laying material) 17 Screws (mounting fixtures) 20,20' wood finish 20a,20a' Moat 25,25' Joint (butt joint) 26 Sealing material 30,30' Support member 31 Lip channel steel 31a Web 31b flange 33' Square Steel Pipe (Column) 34' Bolt 35' Nut

Claims

1. sound insulating bodies that are opposed to each other and erected at a predetermined interval; a wood finishing material covering a surface of at least one of the sound insulators; a support member for the sound insulation body and the wood finishing material, the support member having a vertical portion and flange portions on both sides of the vertical portion, the support member being an open cross-section member formed by joining two channel steel webs, and interposed between the sound insulation bodies at a predetermined interval; A recessed portion in which a fixture is embedded is provided at a predetermined position on the end of the surface of the wood finishing material, The wood finishing material is formed in sections, and the ends of adjacent wood finishing materials are butt-jointed, At least one of the butt joints is in a state where the sound insulation body is in contact with the flange portion of the support member, and the wood finishing material is removably attached to the flange portion of the support member by the attachment tool and fastener that penetrate the sound insulation body, A partition wall characterized in that a sealing material is provided in the countersunk portion.

2. 2. The partition wall according to claim 1, further comprising a lining member made of a plate or elastic material interposed between the sound insulator and the support member.

Images