JP2020159141A - Wall structure - Google Patents

Abstract

To provide a wall structure of a building, which secures rigidity and improves a sound insulation performance.SOLUTION: A wall structure separates each floor of a building of a hierarchical structure to at least two compartments. The wall structure comprises: a pair of finish materials, which face two compartments, respectively; a steel frame member 12, which extends in a wall width direction Z of the wall structure in a space between the pair of finish materials and is a structural material of the building; a runner extending in the wall width direction Z above or below the wall structure; and a stud 4, which is supported by the runner, extends in a height direction and is connected to the pair of finish materials. The stud 4 has a cutout portion 44 containing an area interfering with the steal frame member 12 seen from the wall width direction Z.SELECTED DRAWING: Figure 5

Description

The present invention relates to a wall structure.

As a hierarchical structure such as a plate-shaped apartment house, it is known that the structure is a reinforced concrete structure and each floor is divided into a plurality of exclusive parts by a wall structure such as a doorway wall. Patent Document 1 describes a wall structure (door boundary wall) in which a steel frame member forming a structural material of a building is housed. According to this wall structure, by housing the steel frame member inside the wall structure, the rigidity of the wall structure is ensured, and the space inside the exclusive portion is secured widely to improve the functionality and aesthetics of the exclusive portion. ..

Japanese Unexamined Patent Publication No. 2017-22307

By the way, especially in an apartment house, improvement of the sound insulation performance of the wall structure is required, and the inventors conducted a test on the sound insulation performance of the wall structure containing the steel frame member. According to this test, it was found that the vibration caused by the noise generated in one of the exclusive parts is transmitted more greatly in the place where the steel frame member is arranged in the plane of the wall structure.

Therefore, an object of the present invention is to provide a wall structure capable of improving sound insulation performance while ensuring rigidity.

According to a certain aspect of the present invention, the wall structure is a wall structure that separates each floor of a hierarchical building into at least two sections, and a pair of finishing materials facing each of the two sections and the above 1 In the space between the pair of finishing materials, the steel member extending in the wall width direction of the wall structure and forming the structural material of the building, the runner extending in the wall width direction at the upper and lower parts of the wall structure, and the runner. A stud that is supported and extends in the height direction and is joined to the pair of finishing materials, wherein the stud has a notch that includes at least a region that interferes with the steel member when viewed from the wall width direction. Have.

In the wall structure, the steel frame member may not be provided with a fireproof coating.

In the wall structure, the steel frame member is an H-shaped steel having a pair of flanges and a web, and the main surface of the web is arranged along the height direction, and the notch is the notch. It may include a region where the stud and the flange interfere with each other.

In the wall structure, an elastically deformable spacer may be arranged between the notch and the flange.

In the wall structure, the stud is a lip channel steel, and the notch is formed by bending a pair of cutting lines formed in a direction intersecting the longitudinal direction of the stud and a portion between the cutting lines. It may have a bent portion to be formed.

In the wall structure, the finishing material may include at least one of gypsum board, rock wool board, calcium silicate board, ALC board, and GRC board.

According to the above configuration, the rigidity of the wall structure can be ensured by arranging the steel frame member inside the wall structure. Further, by providing the notch in the stud, the stud and a part of the steel frame member do not come into direct contact with each other, so that the solid propagating sound from the stud to the steel frame member is reduced and the sound insulation performance of the wall structure can be improved. it can.

It is a perspective view of the building of the hierarchical structure which concerns on 1st Embodiment of this invention. It is a side view of the building of the hierarchical structure which concerns on 1st Embodiment of this invention. It is a front view of the building of the hierarchical structure which concerns on 1st Embodiment of this invention. It is sectional drawing of the wall structure which concerns on 1st Embodiment of this invention. It is an enlarged perspective view of the steel frame member and a stud between beams in the wall structure which concerns on 1st Embodiment of this invention. It is sectional drawing of the steel frame member and a stud between beams in the wall structure which concerns on 1st Embodiment of this invention. It is a figure explaining the manufacturing method of the stud of the wall structure which concerns on 1st Embodiment of this invention. It is sectional drawing of the steel frame member and a stud between beams in the wall structure which concerns on 2nd Embodiment of this invention. It is sectional drawing of the steel frame member and stud between beams in the wall structure which concerns on 3rd Embodiment of this invention. 9 is a cross-sectional view taken along the line X-X of FIG. It is sectional drawing of the wall structure which concerns on 4th Embodiment of this invention. It is sectional drawing of the wall structure which concerns on other embodiment of this invention. It is sectional drawing of the wall structure which concerns on other embodiment of this invention. It is sectional drawing of the wall structure of the comparative example. It is a graph which shows the result of the test about the sound insulation performance of the wall structure of 1st Embodiment and the comparative example.

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In the present specification and the drawings, components having substantially the same functional configuration are designated by the same reference numerals, so that duplicate description will be omitted.

(First Embodiment)
1, FIG. 2 and FIG. 3 are a perspective view, a side view, and a front view of the building 10 having a hierarchical structure according to the first embodiment of the present invention. The building 10 has a wall structure 1. The wall structure 1 has a finishing material 6 facing the exclusive portion P, but only a part thereof is shown in FIGS. 1 and 2. Further, in FIG. 1, the illustration of the steel base material 2 constituting the wall structure 1 is omitted.
The building 10 of the present embodiment is a plate-shaped condominium having a rectangular shape when viewed from above, with the girder direction X being the longitudinal direction and the beam-to-beam direction Z being the lateral direction. The building 10 is not limited to an apartment house, and may be used as a hospital or an office.

The building 10 includes a slab 11 that divides each floor of the hierarchical structure, a plurality of inter-column steel members 12 extending in the inter-column direction Z, a plurality of girder steel members 13 extending in the girder direction X, and an inter-column steel frame extending in the height direction Y. It has a plurality of concrete columns 14 to which the member 12 and the girder steel frame member 13 are joined.

In the building 10, on each floor of the hierarchical structure, the exclusive portion P (section), which is a section such as a residence, is lined up in the column direction X. A wall structure 1 that functions as a door boundary wall that separates each floor of the building 10 into at least two exclusive portions P is arranged between the exclusive portions P that are adjacent to each other in the girder direction X.

The concrete pillar 14 is arranged along the outer circumference of the building 10. The concrete column 14 is formed of reinforced concrete having a substantially rectangular cross section. If necessary, the concrete column 14 may be formed of steel-framed reinforced concrete having a steel column such as a single H-shaped steel or a cross H-shaped steel built therein. The concrete columns 14 are arranged at the four corners of the respective exclusive portions P.

In the present embodiment, the inter-beam steel frame member 12 and the girder steel frame member 13 are H-shaped steel.
The inter-beam steel frame member 12 extends in the inter-beam direction Z at the upper part of each floor of the hierarchical structure, and both ends thereof are connected to a pair of concrete columns 14. The inter-beam steel frame member 12 is connected to the concrete column 14 to form a structural material of the building 10.

FIG. 4 is a cross-sectional view of the wall structure 1 according to the embodiment of the present invention. FIG. 5 is an enlarged perspective view of the inter-beam steel frame member 12 and the steel base material 2 (stud 4) in the wall structure 1 according to the embodiment of the present invention. In FIG. 5, the inter-beam steel frame member 12 is indicated by a chain double-dashed line. The viewpoints of the front view of the building 10 shown in FIG. 3 and the cross-sectional view of FIG. 4 are the same. Further, in the following, the wall thickness direction X, the height direction Y, and the wall width direction Z shown in FIGS. 4 and 5 will be described, but these directions are the girder rows shown in FIGS. 1 to 3 above. It corresponds to the direction X, the height direction Y, and the inter-beam direction Z, respectively.
As shown in FIG. 4, the wall structure 1 includes at least a pair of finishing materials 6 facing the compartments P on both sides, a steel base material 2 supporting at least a pair of finishing materials 6, and a steel base material. It has an inter-beam steel frame member 12 arranged between the two. As described above, in the present embodiment, the inter-beam steel frame member 12 is H-shaped steel. A floor plate or the like may be interposed between the steel base material 2 and the finishing material 6.

The steel base material 2 can be assembled, for example, based on the standard defined by JIS A 6517. The steel base material 2 is a rail-shaped runner 3 extending in the wall width direction Z at the upper and lower ends of the wall structure 1, and a stud 4 supported by the runner 3 and extending in the height direction Y and joined to the finishing material 6. And have. The steel base material 2 may further have a steel steady rest (not shown) that penetrates the through hole provided in the stud 4 to prevent the stud 4 from swinging.
The runner 3 of the present embodiment is directly attached to the inter-beam steel frame member 12, but the present invention is not limited to this, and may be attached to the inter-beam steel frame member 12 via, for example, a predetermined connecting member.

Here, the studs 4 that support the finishing materials 6 on both sides are arranged apart from each other in the wall thickness direction X. The distance between the centers of the studs 4 can be appropriately set according to the required sound insulation performance and the like. The wall structure 1 of the present embodiment is formed so that the total thickness is, for example, about 200 mm to about 400 mm. In this case, the distance between the centers of the studs 4 in the wall thickness direction X is about 140 mm to 340 mm.

The pair of finishing materials 6 face each of the two isolated portions P. The finishing material 6 includes, for example, gypsum board, rock wool board, calcium silicate board, ALC board (lightweight cellular concrete board cured by high temperature and high pressure steam) or GRC board (cement mortar and glass fiber) formed into a substantially flat plate shape or the like. It is a fireproof plate that exhibits a predetermined heat insulating performance such as (composite plate). The finishing material 6 can have a laminated structure of a plurality of refractory plates. In this case, the same type of refractory plates may be stacked, or different types of refractory plates may be stacked. The finishing material 6 is joined to the steel base material 2 by, for example, a screw.

As described above, in the wall structure 1, the inter-beam steel frame member 12 extends in the wall width direction Z in the space between the pair of finishing members 6. Since the inter-beam steel frame member 12 is arranged between the pair of finishing materials 6, it is not visible from the exclusive portion P. Further, in the present embodiment, the inter-beam steel frame member 12 is arranged so that the flange 16 is parallel to the slab 11 and the web 17 is parallel to the finishing material 6. In the present embodiment, the inter-beam steel frame member 12 is not provided with a fireproof coating such as a sprayed rock wool fireproof coating material or a wound fireproof coating material. Since the fireproof coating is not applied to the inter-beam steel frame member 12, the material cost and the construction cost of the fireproof coating material can be suppressed.

As shown in FIG. 5, the stud 4 is formed of, for example, a thin steel plate having a thickness of about 0.8 mm, and is a long groove-shaped member in a cross section (XZ cross section). The stud 4 has a bottom surface 41 orthogonal to the wall width direction Z and extending in the height direction Y, a pair of side surfaces 42A and 42B in contact with both ends of the bottom surface 41 in the wall thickness direction X and orthogonal to the wall thickness direction X, and a pair of side surfaces. It is a lip channel steel formed from a lip portion 43 projecting from each end of 42A and 42B in a direction approaching each other. The finishing material 6 (not shown in FIG. 5) is joined to one side surface 42B.

Here, the stud 4 has a cutout portion 44 including at least a region that interferes with the inter-beam steel frame member 12 when viewed from the wall width direction Z.
In the present embodiment, the inter-beam steel frame member 12 and the stud 4 are arranged so as to interfere with each other in the wall thickness direction X. More specifically, the H-section steel constituting the inter-beam steel frame member 12 is arranged so that the end surface 16b in the width direction of the flange 16 is located near the middle of the pair of side surfaces 42A and 42B of the stud 4. A notch 44 is formed in the stud 4 in order to eliminate this interference.

As shown in FIG. 6, the cutout portion 44 is viewed from a pair of side portions 45 formed so as to be parallel to the main surface 16A of the flange 16 when viewed from the wall width direction Z and from the wall width direction Z. It has an end portion 46 formed so as to be parallel to the end surface 16B of the flange 16. When viewed from the wall width direction Z, the cutout portion 44 has a groove shape due to a pair of side portions 45 and end portions 46.
The distance S1 between the side portion 45 of the notch portion 44 and the flange 16 is preferably 10 mm or more, more preferably 20 mm or more. The distance S2 between the end portion 46 and the flange 16 is preferably 5 mm or more, more preferably 10 mm or more.

Next, a method of forming the notch portion 44 will be described.
As shown in FIG. 7, the method of forming the notch 44 includes a cutting step of forming cutting lines C1 and C2 on the stud 4, a removing step of removing the portion 42C that can be removed by the cutting step, and bending. It has a bending step of bending the portion 41A.
As shown in FIG. 7A, in the cutting step, the direction orthogonal to the height direction Y (the direction in which the stud 4 extends) from one lip portion 43 of the stud 4 to the side surface 42A and a part of the bottom surface 41. A pair of first cutting lines C1 is formed in. Next, as shown in FIG. 7B, a second cutting line C2 is formed near the boundary between the side surface 42A and the bottom surface 41 of the stud 4.

As shown in FIG. 7C, in the removing step, the portion 42C from the lip portion 43 surrounded by the cutting lines C1 and C2 to the side surface 42A is removed. At this point, a region (bent portion 41A) sandwiched between the pair of cutting lines C1 remains on the bottom surface 41.
As shown in FIG. 7D, in the bending step, the bent portion 41A is bent along a line connecting the respective end points of the pair of cutting lines C1, and the bottom surface 41 is paired with the side portions 45 and the ends. A notch 44 having the portion 46 is formed.

The shape of the bent portion 41A is not limited to the rectangular shape as shown in FIG. 7. For example, the bent portion 41A may be further cut to form a triangular shape. Further, as shown in FIG. 7C, the bent portion 41A may be removed by forming a further cutting line without bending.

According to the first embodiment of the present invention as described above, the rigidity of the wall structure 1 can be ensured by arranging the inter-beam steel frame member 12 inside the wall structure 1. By providing the notch 44 in the stud 4, interference between the inter-beam steel frame member 12 and the stud 4 can be avoided, and the distance between the centers of the studs 4 can be reduced in the wall thickness direction. As a result, the volume of the exclusive portion P can be expanded while maintaining the strength of the inter-beam steel frame member 12. By providing a notch 44 in the stud 4 to avoid interference between the inter-beam steel frame member 12 and the stud 4 without dividing the stud 4, the number of parts in the entire wall structure 1 can be reduced and the construction can be facilitated. can do.

Further, by providing the notch 44 in the stud 4, a gap is created between the stud 4 and the lower flange 16 (a part of the inter-beam steel frame member 12) of the inter-beam steel frame member 12, so that the inter-beam steel frame from the stud 4 is formed. The solid propagating sound to the member 12 is reduced, and the sound insulation performance of the wall structure 1 can be improved.
Further, even when the stud 4 thermally expands in the axial direction (height direction Y) at the time of a fire, the notch 44 absorbs the deformation in the axial direction of the stud 4, so that the stud 4 expands in the wall thickness direction X. It is possible to suppress the deformation as described above.

Further, during the construction of the wall structure 1, when the finishing material 6 is joined to the stud 4, the stud 4 may be slightly deformed inward in the wall thickness direction X of the wall structure 1. In the wall structure 1 of the present embodiment, when the stud 4 is deformed, the end surface 16b of the flange 16 in the wall thickness direction X comes into contact with the bent portion 41A, so that the deformation of the stud 4 is suppressed. As a result, it is possible to prevent the stud 4 from being excessively deformed when the finishing material 6 is joined to the stud 4, and to facilitate the fixing of the finishing material 6.

(Second Embodiment)
FIG. 8 is a cross-sectional view of the wall structure 1B according to the second embodiment of the present invention. Since the configuration of this embodiment is the same as that of the first embodiment except for the configuration near the notch shown in FIG. 8, a duplicate detailed description will be omitted.
In the wall structure 1B of the present embodiment, the spacer 48 is arranged between the flange 16 and the notch 44. The spacer 48 is formed of an elastically deformable sheet-like sound absorbing material such as rock wool or ceramic wool. The spacer 48 is formed so that its thickness is equal to or slightly larger than the distance between the flange 16 and the notch 44.
In the illustrated example, the spacer 48 is divided into a plurality of portions. Specifically, the spacer 48 is arranged between the first spacer 48A arranged between the main surface 16A and the side portion 45 of the flange 16 and between the end surface 16B and the end portion 46 of the flange 16. Includes a second spacer 48B.

The material constituting the spacer 48 is not limited to the above-mentioned material as long as it is an elastic material, and for example, felt or rubber can be used. Further, a lump of a substance such as an adhesive or an adhesive may be used as a spacer.
Further, the spacer 48 does not necessarily have to be arranged. Further, either one of the first spacer 48A and the second spacer 48B may be arranged.

According to the wall structure 1B of the second embodiment, in addition to the effect of the first embodiment, the stud 4 is provided by arranging the elastically deformable spacer 48 between the flange 16 and the notch 44. It is possible to suppress rattling caused by the gap between the beam and the steel frame member 12 between the beams. Further, similarly to the wall structure 1 of the first embodiment, it is possible to prevent the stud 4 from being excessively deformed when the finishing material 6 is joined to the stud 4.

(Third Embodiment)
FIG. 9 is a side view of the stud 4C of the wall structure 1C according to the third embodiment of the present invention. FIG. 10 is a cross-sectional view taken along line XX of FIG. Since the configuration of the present embodiment is the same as that of the first embodiment except for the configuration near the notch shown in FIGS. 9 and 10, a duplicate detailed description will be omitted.
As shown in FIGS. 9 and 10, the notch 44C of the present embodiment has a triangular shape formed by a pair of diagonal cutting lines 49 inclined with respect to the side surface 42A of the stud 4C. As described above, the shape of the cutout portion 44 does not have to be rectangular when viewed from the wall width direction Z, and does not necessarily have to match the shape of the flange 16.

A reinforcing member 50 is attached to the stud 4C of the present embodiment. The reinforcing member 50 is arranged so as to reinforce the portion where the cutout portion 44C is formed. In the illustrated example, the reinforcing member 50 is a channel steel that is fitted from the outside to the bottom surface 41 and the side surface 42B of the stud 4C. The bottom surface 50a of the reinforcing member 50 is in contact with the side surface 42B of the stud 4C, and the side surface 50b is in contact with the lip portion 43 and the bottom surface 41 of the stud 4C, respectively. The reinforcing member 50 and the stud 4C are joined, for example, by welding, screwing, or gluing.
The configuration of the reinforcing member 50 in the present embodiment is an example, and if it is possible to reinforce the portion where the strength is relatively reduced by forming the notch portion 44C in the stud 4C, various other configurations are provided. It is possible to use a reinforcing member. For example, channel steel that fits into the stud 4C from the inside may be arranged as a reinforcing member. Further, the material is not limited to steel, and for example, a reinforcing member such as wood that fits inside the stud 4C may be used.

According to the wall structure 1C of the third embodiment, the cutout portion 44C can be easily formed by forming the cutout portion 44C into a triangular shape.
Further, by reinforcing the stud 4C with the reinforcing member 50, the strength of the stud 4 can be ensured while adopting the shape of the cutout portion 44C that gives priority to workability.

(Fourth Embodiment)
FIG. 11 is a cross-sectional view of the wall structure 1D according to the fourth embodiment of the present invention. Since the configuration of this embodiment is the same as that of the first embodiment except for the wall structure shown in FIG. 11, a duplicate detailed description will be omitted.
As shown in FIG. 11, the wall structure 1D of the present embodiment has a sound absorbing material 7 that is in contact with both sides of the web 17 of the inter-beam steel frame member 12 and is arranged so as to extend in the wall width direction Z.

The sound absorbing material 7 is made of, for example, ceramic wool. Ceramic wool is made by laminating ceramic fibers and producing a felt-like heat insulating material that has been needle-processed in a blanket shape. The sound absorbing material 7 is not limited to ceramic wool, and for example, glass wool and rock wool can also be used.

The location of the sound absorbing material 7 is not limited to this, and may be arranged between the steel base materials 2 below the inter-beam steel frame member 12, for example. Further, the sound absorbing material 7 may be installed on only one side of the web 17.

According to the wall structure 1D of the fourth embodiment, by arranging the sound absorbing material 7 in contact with the inter-beam steel frame member 12, the incident energy of the sound transmitted through the inter-beam steel frame member 12 can be absorbed. The sound insulation performance of the wall structure 1D can be further improved.

(Other embodiments)
12 and 13 are sectional views of a wall structure according to another embodiment of the present invention. In the above embodiment, an example in which the notch formed in the stud is rectangular or triangular has been described, but the shape of the notch is not limited to these examples. For example, as shown in FIG. 12, the shape of the notch is an isosceles triangle formed by a cutting line 49A perpendicular to the side surface 42A of the stud 4 and a cutting line 49B inclined with respect to the side surface 42A. It may be in shape. Alternatively, as shown in FIG. 13, the shape of the cutout portion 44 may be a semicircular shape formed by the arcuate cutting line 49C.

(Example)
Hereinafter, tests carried out to compare the sound insulation performance of the wall structure according to the embodiment of the present invention will be described.

FIG. 14 is a cross-sectional view of the wall structure according to the comparative example in the test. FIG. 15 is a graph showing the results of tests carried out to compare the sound insulation performance of the wall structure 1 according to the first embodiment of the present invention and the wall structure according to the comparative example shown in FIG. As shown in FIG. 14, in the wall structure 100 of the comparative example, the stud 4 is cut by the cutting portion A without forming the notch 44 (see FIG. 4) in the stud 4, and the runners are placed above and below the flange 16. This is a form in which the stud 4 and the flange 16 are fixed after the 3 is installed. In the wall structure 100 of the comparative example, the stud 4 and the flange 16 are in contact with each other at the cut portion A via the runner 3.
The horizontal axis of FIG. 15 is the 1/3 octave band center frequency (Hz), and the vertical axis is the sound transmission loss (dB). In the test, a sound source having a predetermined frequency was placed on one side of the wall structure 1, and the sound transmission loss when sound was received on the opposite side of the wall structure 1 was measured. The test was carried out by a measuring method as described in JIS A 1416 (Measuring method of air noise blocking performance of building members in a laboratory).

As shown in the graph of FIG. 15, in the wall structure 1 according to the first embodiment, in any band where the 1/3 octave band center frequency is 50 Hz, 63 Hz, and 80 Hz, as compared with the wall structure according to the comparative example. Therefore, the sound transmission loss is large. That is, in these frequency bands, the sound insulation performance is improved by providing the notch 44 in the stud 4 in the wall structure 1. The 1/3 octave band center frequencies of 50 Hz, 63 Hz, and 80 Hz are relatively low bands in the audible frequency band, but the solid-borne sound in the low-frequency band is the solid-borne sound in the high-frequency band. Therefore, it can be said that the wall structure 1 according to the embodiment of the present invention realizes a significant improvement in sound insulation performance.

Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to such examples. It is clear that a person having ordinary knowledge in the field of technology to which the present invention belongs can come up with various modifications or modifications within the scope of the technical ideas described in the claims. , These are also naturally understood to belong to the technical scope of the present invention.

Specifically, for example, in the above embodiment, the inter-beam steel frame member 12 is made of H-shaped steel, but the present invention is not limited to this as long as it can be used as a structural material of the building 10. For example, as the inter-beam steel frame member 12, a steel pipe such as a square steel pipe or a circular steel pipe can be adopted. When a steel pipe is adopted as the inter-beam steel frame member 12, the sound absorbing material 7 may be arranged inside the steel pipe. Further, as the inter-beam steel frame member 12, a concrete filled steel pipe structure (CFT; Concrete Filled Steel Tube) may be adopted. By making the inter-beam steel frame member 12 at least one of H-shaped steel, square steel pipe, circular steel pipe, and concrete-filled steel pipe structure, the strength of the steel frame member as a structural material of a building can be ensured.

1,1B, 1C, 1D ... Wall structure, 2 ... Steel base material, 3 ... Runner, 4, 4C ... Stud, 6 ... Finishing material, 7 ... Sound absorbing material, 10 ... Building, 11 ... Slab, 12 ... Between beams Steel member, 13 ... Girder steel member, 14 ... Concrete column, 16 ... Flange, 17 ... Web, 41 ... Bottom, 41a ... Bent part, 42 ... Side, 43 ... Lip part, 44 ... Notch part, 45 ... Side part , 46 ... end, 48 ... spacer, 49 ... cutting line, 50 ... reinforcing member, C ... cutting line, P ... exclusive part, X ... girder direction, Y ... height direction, Z ... beam-to-beam direction.

Claims (6)

A wall structure that separates each floor of a hierarchical building into at least two compartments.
A pair of finishing materials facing each of the two compartments,
A steel member extending in the wall width direction of the wall structure in the space between the pair of finishing materials and forming the structural material of the building, and
With runners extending in the width direction of the wall at the top and bottom of the wall structure,
A stud that is supported by the runner, extends in the height direction, and is joined to the pair of finishing materials.
With
The stud has a wall structure having a notch portion including at least a region that interferes with the steel frame member when viewed from the wall width direction. The wall structure according to claim 1, wherein the steel frame member is not provided with a fireproof coating. The steel frame member is an H-section steel having a pair of flanges and a web, and the main surface of the web is arranged along the height direction.
The wall structure according to claim 1 or 2, wherein the cutout portion includes a region where the stud and the flange interfere with each other. The wall structure according to claim 3, wherein an elastically deformable spacer is arranged between the notch and the flange. The stud is lip channel steel
3. Claim 3 or claim, wherein the cutout portion has a pair of cutting lines formed in a direction intersecting the longitudinal direction of the stud, and a bent portion formed by bending a portion between the cutting lines. The wall structure according to 4. The wall according to any one of claims 1 to 5, wherein the finishing material includes at least one fireproof board of gypsum board, rock wool board, calcium silicate board, ALC board, and GRC board. Construction.

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