JP6472903B1 - Wall base material fixing structure and wall base material fixing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wall base material fixing structure and its construction method capable of fixing a wall base material of an inner wall to a pillar material having a web and a flange orthogonal to each other and easily adjusting the construction of the wall base material. And
A wall base material fixing structure 1 is a structure in which a flange 21 of a pillar member 2 having a flange 21 and a web 22 orthogonal to each other and a wall base material 4 of an inner wall 3 are fixed by a fixing bracket 5. The fixing bracket 5 includes a fitting portion 51 made of a flat plate in which a cut groove 511 to be fitted to the flange 21 is formed, and a fitting portion 521 for fitting and supporting the wall base material 4 in a direction orthogonal to the cut groove 511. A support portion 52 having an adjustment bolt 53 that connects the fitting portion 51 and the support portion 52 and adjusts the wall base material 4 fitted in the support portion 52 in the out-of-plane direction of the inner wall 3. The notch grooves 511 are formed by inclining a pair of opposite end surfaces of the notches at the same angle in directions close to each other from the base end of the notch toward the tip.
[Selection] Figure 9

Description

  The present invention relates to a wall base material fixing structure for fixing a wall base material of an inner wall to a pillar material formed of a shape steel having a web and a flange orthogonal to each other, and a construction method thereof.

  When an inner wall is formed around a steel column to which a heat insulating material is conventionally fixed, as shown in FIG. 13, the wall base material X1 of the inner wall X is out of the plane of the inner wall X so as not to interfere with the heat insulating material Y and the steel column Z. Generally, the heat insulating material Y is continuously installed so that the heat insulating efficiency is not lowered by taking out in the direction and installing. However, in this case, there is a problem that the interior of the room becomes narrow because the wall projects to the indoor side. Therefore, a metal fitting that can be fixed to the steel column without causing the wooden base material of the inner wall to go out of the plane of the inner wall has been proposed in which the heat insulating material around the steel column is continuous so as not to lower the heat insulation efficiency. (Patent Document 1)

  In addition, a metal fitting has been invented that can fix a wooden base frame of an inner wall that is framed in a rectangular shape to a horizontal member such as a steel beam instead of a steel column. This metal fitting is a metal fitting body formed in a groove shape that fits into the upper end of the wooden base frame, a fixing member that has a meshing portion that meshes and fixes to the flange portion of the horizontal member, and an adjustment that connects the metal fitting body and the fixing member. And the inner wall can be formed without fixing the wooden base frame to the steel column. In addition, the rotation of the adjustment bolt from the indoor side can adjust the entrance / exit of the inner wall of the wooden base frame in the out-of-plane direction. (Patent Document 2)

JP-A-8-13651 JP-A-11-93302

  However, the metal fitting described in Patent Document 1 is simply screw-fixed to the wooden base material with a contact portion sandwiched between the flanges of the steel column and protruding toward the wooden base material side. Since there is no adjustment function to correct the street, even if a construction error occurs in various places, the error cannot be absorbed and the construction accuracy of the inner wall may be lowered.

  On the other hand, the metal fitting described in Patent Document 2 can adjust the out-of-plane direction of the inner wall of the wooden base frame, but because it is installed only on the horizontal member, warping occurs in the middle part of the wooden base frame Cannot modify the structure and street of the wooden underframe. And when installing a wooden foundation frame around a steel column, it is difficult to secure a sufficient space for mounting the metal fitting at the joint between the steel column and the steel beam arranged above it. Can only be used in areas where steel columns are not erected.

  Then, this invention is made | formed in view of the subject mentioned above, and while fixing the wall base material of an inner wall firmly to the pillar material formed with the shape steel which has the web and flange which mutually orthogonally cross, around a pillar material An object of the present invention is to provide a wall base material fixing structure and a construction method thereof in which the heat insulating material is made continuous and the construction and street of the wall base material can be easily adjusted.

The fixing structure of the first wall base material according to the present invention is a vertical direction between the flange of the column member formed of the shape steel having the web and the flange orthogonal to each other and the back side surface of the inner wall board material forming the wall surface of the inner wall. A wall base material fixing structure in which a long wall base material fixed to a wall is fixed by a fixing bracket, wherein the fixing bracket includes a rectangular plate-shaped first plate piece and both ends of the first plate piece. A cut groove that is formed to extend in the same direction at a substantially right angle from the first plate piece and is fitted into the flange in the exposed portion by forming a notch at one end portion on the side orthogonal to the both ends. A pair of second plate pieces provided, and a pair of third plate pieces formed so as to bend the tip sides of the pair of second plate pieces in a close proximity direction and to separate the tips. The wall base material is fitted and supported in a direction orthogonal to the fitting portion and the cut groove. A supporting portion having a fit addition unit, and an adjusting bolt for adjusting and out of the out-of-plane direction of the inner wall of the wall base member is fitted to the support portion with connecting the fitting portion and the supporting portion The cut groove is formed by cutting in the third plate piece direction from one end of the second plate piece on the side opposite to the third plate piece, and cuts a pair of opposite end surfaces of the cut groove. It is characterized in that it is uniformly inclined at the same angle in directions close to each other from the base end to the tip end.

  In the second wall base material fixing structure according to the present invention, the cut groove is formed so that a width of a front end portion of the cut is narrower than a plate thickness of the flange, and a width of a base end portion of the cut is set to the flange. It is characterized by being substantially the same as the plate thickness.

  The third wall base material fixing structure according to the present invention is characterized in that a plurality of the fixing brackets are installed at intervals in the longitudinal direction of the flange of the column member.

In the fourth wall base material fixing structure according to the present invention, the adjustment bolt connects the first plate piece and the support portion with the front end of the bolt directed toward the third plate piece side. The cross-shaped cross hole cut into the surface is disposed so as to be positioned apart from the pair of third plate pieces .

  In the fifth wall base material fixing structure according to the present invention, the adjustment bolt is formed with a retaining portion at a tip portion for preventing the support portion from falling off the adjustment bolt.

  A method for fixing a wall base material according to the present invention includes a wall base material for fixing a wall base material of an inner wall to a column member made of H-shaped steel using the fixing bracket according to any one of the first to fifth aspects. The wall base material, which is long in the vertical direction, is disposed at a distance from the web, the cut groove of the fitting portion is fitted to the flange, and the wall base material is fixed. After the material is fitted and fixed to the support part, the adjustment bolt is rotated to adjust the entrance and exit of the wall base material fitted to the support part and the support part in the out-of-plane direction of the inner wall, The lower end portion of the wall base material is fixed to the floor base material.

  According to the first wall base material fixing structure of the present invention, the fixing bracket includes a fitting portion that fits into the flange, a support portion that fits and supports the wall base material in a direction orthogonal to the cut groove, and a fitting. An adjustment bolt is provided for connecting the landing portion and the support portion and adjusting the out-of-plane direction of the inner wall of the wall base material fitted in the support portion. Therefore, it is possible to install the wall base material without taking it out in the in-plane direction of the inner wall so as not to interfere with the pillar material, and it is possible to improve the construction accuracy of the inner wall by correcting the structure and street of the inner wall. Further, the notch grooves provided in the fitting portion of the fixing bracket incline the pair of opposite end faces of the notch at the same angle from the base end of the notch toward the tip toward each other at the same angle. When the landing part is driven into the flange of the pillar with a hammer, only one of the end faces is greatly deformed so that the fixing bracket does not tilt obliquely. It can be firmly fixed to the pillar material.

  According to the second wall base material fixing structure of the present invention, the cut groove is formed such that the distance of the front end portion of the cut is narrower than the plate thickness of the flange, and the width of the base end portion of the cut is substantially equal to the plate thickness of the flange. Since they are the same, when the fitting portion is driven into the flange of the pillar material with a hammer, the leading end side of the cut groove can more firmly sandwich the flange, and the fixing bracket can be prevented from falling off the pillar material.

  According to the third wall base material fixing structure of the present invention, a plurality of fixing brackets are installed at intervals in the longitudinal direction of the flange of the column member, so that each fixing bracket can be operated by operating the adjusting bolt. It is possible to adjust the in-out direction of the inner wall of the wall base material fitted in the support portion at the installation height of the inner wall. Therefore, it is possible to absorb construction errors that have occurred in various places, and it is possible to form an adjusted inner wall of a building or street.

  According to the fourth wall base material fixing structure of the present invention, since the adjustment bolt has a cross hole cut in a cross shape on the small facet on the tip side, a tool such as an electric screwdriver is inserted into the cross cut. By rotating the adjustment bolt, it is possible to easily adjust the entrance / exit of the inner wall of the wall base material in the out-of-plane direction.

  According to the fifth wall base material fixing structure of the present invention, the adjustment bolt is formed with a retaining portion for preventing the support portion from falling off from the adjustment bolt, so that the adjustment bolt is rotated to rotate the support portion. Even if the entrance / exit of the wall base material fitted in is adjusted, the support part and the wall base material are not detached from the adjustment bolt, and the connection with the fitting part is not inadvertently released.

  According to the fixing method of the wall base material of the present invention, the fitting part of the fixing bracket is installed on the flange, the wall base material is fitted into the support part, and the wall base material is adjusted in the out-of-plane direction of the inner wall. Since the lower end portion of the wall base material is fixed to the floor base material, it is possible to form an inner wall with high construction accuracy adjusted for the construction and street of the wall base material.

The horizontal sectional view which shows the fixation structure of a wall base material. The perspective view which shows the fixing structure of a wall base material. The perspective view which shows a fixing metal fitting. The side view which shows a fixture. The rear view which shows a fixture. The top view which shows a fixture. The top view which shows the fixing metal fitting which has the adjustment bolt which formed the securing part. AA sectional drawing of FIG. The perspective view which shows a pair of end surface of a notch groove. The side view which shows the motion of a support part at the time of rotating an adjustment bolt. (A) The perspective view which shows a mode that a fixing metal fitting is installed in a pillar material. (B) The perspective view which shows a mode that a wall base material is installed in a fixing metal fitting. Sectional drawing which shows a mode that the lower end part of a wall base material is fixed to a floor base material. The top view which shows the case where a stud material is installed avoiding a pillar material.

  The best embodiment of the wall base material fixing structure will be described below with reference to the drawings. The fixing structure of the wall base material of the present application is a structure used when fixing the wall base material of the inner wall between the flanges of the column material mainly formed of H-shaped steel. In addition, although the fixing structure of the wall base material of this application can be applied if the column material is a shape steel having a web and a flange that are orthogonal to each other, a case where the column material is an H-shaped steel will be described here.

  As shown in FIG. 1, the wall base material fixing structure 1 is vertically fixed to the flange 21 of the column material 2 made of H-shaped steel and the back side surface of the inner wall board material 31 that forms the wall surface of the inner wall 3. This is a structure in which the long wall base material 4 is fixed with a fixing bracket 5.

  As shown in FIGS. 1 and 2, the column 2 formed of H-shaped steel has a flange 21 and a web 22 that are orthogonal to each other, and a base plate 23 is welded to the lower end to stand on the upper surface of the foundation F. ing. In the illustrated example, the column material 2 is erected on the foundation F as a column material to be installed on the first floor. However, the column material 2 may be a column material installed on the second floor or more, in which case the column material is used. The base plate 23 is not welded to the lower end of 2. Further, the beam member 6 is placed on the upper end of the column member 2 in a state orthogonal to the column member 2, and the column member 2 and the beam member 6 are joined by a gusset plate 61. An elastically deformable heat insulating board 7 formed by wrapping glass wool with a waterproof and moisture proof sheet is installed around the pillar 2. The inner wall 3 is a wall formed facing the interior of a building. As shown in FIG. 1, a wall base material 4 made of wooden square material and a plate-like inner wall board material fixed to the wall base material 4. 31. Although the magnitude | size of the wall base material 4 is not specifically limited, As shown in FIG. 2, the length is formed substantially the same as the full length of the pillar material 2. As shown in FIG.

  As shown in FIGS. 1 and 3, the fixing bracket 5 includes a fitting portion 51 for fitting two cut grooves 511 provided by cutting two parallel flat plates into the flange 21, and the cut grooves 511. A support portion 52 having a fitting portion 521 for fitting and supporting the wall base material 4 in a direction orthogonal to each other, and a direction in which the opening direction of the fitting groove 51 and the fitting portion 521 is perpendicular to each other. And an adjustment bolt 53 that adjusts the movement of the inner wall 3 of the support portion 52 in the out-of-plane direction.

  As shown in FIGS. 3 to 6, the fitting portion 51 is a member having a slight spring property formed by bending a single steel plate into a substantially C shape, and has a first through hole 510 penetrating in the plate thickness direction. The provided first plate piece 51a and both ends of the first plate piece 51a are bent at substantially right angles, and a pair of parallel second plate pieces 51b and a pair of second plate pieces 51b that are opposed to each other are connected to each other. And a pair of third plate pieces 51c that are formed by bending in the approaching direction.

As shown in FIG. 3, the second plate piece 51b is formed so that one end protrudes from the first plate piece 51a, and the cut groove opens in the opposite direction to the third plate piece 51c. 511 is provided. As shown in FIG. 9, the notch grooves 511 are formed by inclining end faces 512 facing each other at the same angle α from the base end of the notch toward the end on the open side in the direction of approaching each other. The width W1 of the distal end portion is formed narrower than the plate thickness t of the flange 21 shown in FIG. 10, and the width W2 of the proximal end portion is formed substantially the same as the plate thickness t of the flange 21. Then, as shown in FIG. 6, a pair of the third plate piece 51c are spaced apart the-edge with each other, it is possible to operate the adjusting bolt 53 from the gap between spaced portions.

  As shown in FIGS. 3 and 4, the support portion 52 includes a first support portion 52a obtained by bending a steel plate into an L shape, and a second plate obtained by bending a metal plate having a thickness smaller than the first support portion 52a into an L shape. It is comprised by joining the support part 52b. As shown in FIGS. 3 and 10, the first support portion 52a includes two first contact pieces 52c formed by bending both ends on one end side of the steel plate at a right angle, and two first contact pieces 52c. The sandwiched portion enters the central portion of the steel plate and is composed of a rising piece 52d that is bent at a substantially right angle in the opposite direction to the first contact piece 52c, and a second contact piece 52e that is a flat plate portion of the steel plate that is not bent. Is done.

  As shown in FIGS. 3 and 10, the second support portion 52 b comes into contact with the side surface of the wall base material 4 opposite to the web 22 when the wall base material 4 is fitted into the support portion 52, and the wall base material A third contact piece 52f provided with a plurality of screw holes 522 through which screws for fixing 4 are inserted, and one end of the third contact piece 52f is bent at a substantially right angle and overlapped with the second contact piece 52e. And a coupling piece 52g coupled together. As shown in FIG. 1, the second support portion 52 b has a third contact piece 52 f that directly contacts the inner wall board material 31 when the inner wall board material 31 is fixed to the wall base material 4. It is formed of a thin metal plate so that the building does not tilt, and the thickness can be formed, for example, about 0.4 mm. As shown in FIG. 4, the first support portion 52a and the second support portion 52b configured as described above are configured so that the coupling piece 52g is placed on the second contact piece 52e in a state where the corners of the first support portion 52a and the second support portion 52b face each other. And the coupling piece 52g and the second contact piece 52e can be coupled by burring and crimping (52h). The screw hole 522 formed in the third contact piece 52f may be a long and narrow hole in one direction.

  As shown in FIGS. 5 to 8, the adjustment bolt 53 is a low head bolt in which a male screw is formed on the outer peripheral surface and a cross hole 53 a is formed on the small end surface, and connects the fitting portion 51 and the support portion 52. . Specifically, as shown in FIG. 3, the first plate of the second plate piece 51b with the first plate piece 51a of the fitting portion 51 directed toward the first contact portion 52c of the support portion 52. The edge that does not protrude from the piece 51a is brought into contact with the coupling piece 52g. Then, as shown in FIG. 8, the adjusting bolt 53 is formed in the approximate center of the first through hole 510, the first nut 54, and the rising piece 52d of the first plate piece 51a, and burring is performed on the inner peripheral surface. Are inserted and screwed in the order of the second through holes 520 provided, and the nut 54 is rotated in the tightening direction to connect and fix the fitting portion 51 and the support portion 52. Further, as shown in FIGS. 7A and 7B, the adjustment bolt 53 can prevent the rising piece 52d from falling off from the adjustment bolt 53 by forming a retaining portion 530 at the tip. it can. The retaining portion 530 may be, for example, a member that has been subjected to uneven processing in the radial direction of the adjusting bolt 53 shown in FIG. 7A, or a cap that is externally fitted to the male screw shown in FIG. 7B. .

  As shown in FIG. 10, the fixing bracket 5 configured in this way rotates the nut 54 in the loosening direction, inserts the tool 8 such as an electric screwdriver into the cross hole 53 a, and rotates the adjustment bolt 53. The rising piece 52d screwed to can be slid along the bolt shaft. At this time, if the retaining portion 530 is formed on the adjustment bolt 53, the rising piece 52 d can be prevented from falling off from the tip of the adjustment bolt 53.

  Then, the construction method of the fixing structure 1 of a wall base material is demonstrated. First, as shown in FIG. 11A, the fixing bracket 5 is installed on the column member 2 around which the heat insulating board 7 is fixed. In this installation, the tip portion of the cut groove 511 of the fitting portion 51 is brought into contact with the small edge surface of the flange 21, and the fitting portion is attached with a hammer (not shown) until the small edge surface of the flange 21 is brought into contact with the proximal end of the cut groove 511. The third plate piece 51 c of 51 is driven in, and the fixing bracket 5 is fitted and fixed to the column member 2. At this time, as described above, the notch groove 511 has a pair of notch end faces 512 inclined at the same angle α from the base end of the notch toward the tip toward the tip, so that the notch groove 511 is fitted with a hammer. When the landing portion 51 is driven, the opposing end surfaces 512 of the cut groove 511 are fitted into the flange 21 while being uniformly deformed. Therefore, only one end surface 512 of the pair of end surfaces 512 is not greatly deformed, and the fixing bracket 5 can be fixed to the flange 21 in a stable state without being inclined obliquely. In addition, the width W1 of the front end portion of the cut is formed narrower than the plate thickness t of the flange 21, and the width W2 of the base end portion of the cut is formed substantially the same as the plate thickness t of the flange 21, so that the cut groove 511 is formed. The front end portion of the metal plate can firmly clamp the flange 21 and can prevent the fixing bracket 5 from falling off the column material 2. Note that a plurality of the fixtures 5 are installed on the pillar 2 with a certain interval in the longitudinal direction of the pillar 2. In the example of illustration, although the fixing metal fitting 5 is installed only in the upper end part and intermediate part of the pillar material 2, you may install in a lower end part and other height positions.

  Subsequently, as shown in FIGS. 10 and 11B, the wall base material is pressed until the expected surface 41 of the wall base material 4 comes into contact with the second contact piece 52 e of the support portion 52 while pressing the heat insulating board 7. 4 is fitted into the fitting portion 521. Then, a screw (not shown) is inserted into the screw hole 522 of the third contact piece 52f from the indoor side to fix the wall base material 4 to the support portion 52 with screws. At this time, if the screw hole 522 is a long and narrow hole, the position in the in-plane direction of the inner wall 3 of the wall base material 4 can be finely adjusted.

  As shown in FIG. 10, the wall base material 4 fixed to the fixing metal 5 in this way adjusts the entrance / exit of the inner wall 3 in the out-of-plane direction by rotating the adjustment bolt 53. That is, the nut 54 is rotated in the loosening direction, the tool 8 is inserted into the cross hole 53 a and the adjustment bolt 53 is rotated, and the rising piece 52 d screwed into the adjustment bolt 53 and the wall fitted in the support portion 52. The base material 4 is slid to a desired position along a bolt axis extending in the out-of-plane direction of the inner wall 3. At this time, when the retaining portion 530 is formed on the adjustment bolt 53, the rising piece 52 d can be prevented from falling off from the tip of the adjustment bolt 53.

  After adjusting the entrance / exit of the inner wall 3 of the wall base material 4 in the out-of-plane direction by operating each of the plurality of fixing brackets 5 installed in the longitudinal direction of the column member 2, as shown in FIG. The floor base material F2 is placed, and the L-angle material 9 is brought into contact with the side surface on the indoor side of the lower end portion of the wall base material 4 and the upper surface of the floor base material F2 to fix the screws, thereby completing the installation of the wall base material 4. . And finally, as shown in FIG. 1, the inner wall board material 31 is screw-fixed to the wall base material 4, and the inner wall 3 is completed.

  In the wall base material fixing structure 1 formed in this way, the wall base material 4 can be installed without avoiding the column material 2 and the heat insulating material 7 installed on the column material 2 is not interrupted. Can be installed continuously. In addition, since a plurality of the fixing brackets 5 are installed at a certain interval in the longitudinal direction of the column member 2, the wall base material can be rotated by rotating the adjustment bolt 53 even if warpage occurs in the middle portion of the wall base material 4. It is possible to adjust the entrance / exit of the inner wall 3 of 4 in the out-of-plane direction, and it is possible to easily form the adjusted inner wall 3 of the building or street while absorbing construction errors occurring in various places. Further, the notch grooves 511 of the fixing metal 5 incline the notch end surfaces 512 facing each other at the same angle α from the base end of the notch toward the tip toward the tip. Then, when one of the end faces 512 is not greatly deformed when it is driven into the flange 21 of the pillar material 2, the pair of end faces 512 are uniformly deformed to fix the fixing bracket 5 to the pillar material 2 in a stable state. be able to. And since the fitting part 51 is formed with the member which has some spring property, it can pinch | interpose the flange 21 elastically and can also be fitted also to the flange 21 of different thickness.

  Further, the embodiment of the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the scope of the idea of the present invention.

  The present invention can be suitably used when fixing a wall base material of an inner wall to a pillar material formed of an H-shaped steel having a web and a flange orthogonal to each other.

DESCRIPTION OF SYMBOLS 1 Fixing structure of wall base material 2 Column material 21 Flange 22 Web 3 Inner wall 31 Inner wall board material 4 Wall base material 5 Fixing metal fitting 51 Insertion part 511 Cut groove 512 End surface 52 Support part 521 Insertion part 53 Adjustment bolt 530 Detachment part α Angle W1 Width of the front end of the cut W2 Width of the base end of the cut t Flange thickness F2 Floor base material

Claims (6)

The flange of the column member formed of a shape steel having a flange and a web orthogonal to each other, and a long wall base material fixed in a vertical direction to the back side surface of the inner wall board material forming the wall surface of the inner wall, It is a wall base material fixing structure that is fixed with a fixing bracket,
The fixing bracket is a rectangular flat plate-like first plate piece, formed to extend in the same direction at substantially right angles from both ends of the first plate piece, and one end portion of the first plate piece on the side orthogonal to the both ends. A pair of second plate pieces provided with a cut groove that fits into the flange in an exposed portion formed by notching and bending the tip side of the pair of second plate pieces in a direction approaching each other. And a support portion having a fitting portion provided with a pair of third plate pieces formed so as to be separated from each other, and a fitting portion for fitting and supporting the wall base material in a direction orthogonal to the cut groove. If, anda adjusting bolt for adjusting and out of the out-of-plane direction of the inner wall of the wall base member is fitted to the support portion with connecting the fitting portion and the supporting portion,
The cut groove is formed by cutting in the direction of the third plate piece from one end of the second plate piece on the side opposite to the third plate piece, and a pair of end faces facing each other of the cut groove are base ends of the cut A structure for fixing a wall base material, wherein the wall base material is uniformly inclined at the same angle in directions close to each other from the tip to the tip.   The notch groove has a width of a front end portion of the notch narrower than a plate thickness of the flange, and a width of a base end portion of the notch is substantially the same as a plate thickness of the flange. 2. The fixing structure of the wall base material according to 1.   3. The wall base material fixing structure according to claim 1, wherein a plurality of the fixing brackets are installed at intervals in the longitudinal direction of the flange of the column member. 4. The adjustment bolt connects the first plate piece and the support portion with the front end of the bolt facing the third plate piece side, and the cross-shaped cross holes cut into the small edge surface on the front end side are the pair. The wall base material fixing structure according to any one of claims 1 to 3, wherein the wall base material fixing structure is disposed so as to be spaced apart from the third plate piece .   5. The wall base material according to claim 1, wherein the adjustment bolt is formed with a retaining portion at a tip portion for preventing the support portion from falling off the adjustment bolt. 6. Fixed structure. A fixing method of a wall base material for fixing a wall base material of an inner wall to a pillar material formed of H-shaped steel using the fixing bracket according to any one of claims 1 to 5,
The wall base material elongated in the vertical direction is disposed at a distance from the web, the cut groove of the fitting portion is fitted into the flange, and the wall base material is fitted into the support portion. Fixed with
After adjusting the in / out direction of the inner wall of the wall base material fitted in the support portion and the support portion by rotating the adjustment bolt,
A method for fixing a wall base material, comprising fixing a lower end portion of the wall base material to a floor base material.

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