JP2012007337A - Partition wall adaptable to large floor height and construction method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a partition wall erected in a high ceiling room and a construction method for the same.SOLUTION: An upper runner 3 mounted on a ceiling 2 in a room and having a receiving groove 3a with a downwardly open U-shaped cross-section is configured such that one flange 3b forming the receiving groove 3a extends longer than the other flange 3c facing the flange 3b so as to enable the partition wall to be erected in a dropping fashion. A lower runner 5 mounted on a floor 4 in the room has a receiving groove 5a having an upwardly open U-shaped cross-section, and the receiving groove 5a is arranged so as to be vertically opposed to the receiving groove 3a of the upper runner 3. The lower end of a partition wall panel 1 is supported in the receiving groove 5a of the lower runner 5. The upper end of the partition wall panel 1 is fitted, with a depth ensuring a given taking-in length m, into the receiving groove 3a of the upper runner 3 formed by the one flange 3b downwardly extending longer than the other and the other shorter flange 3c.

Description

  This invention belongs to the technical field of the partition wall built in the room | chamber interior whose floor height is as high as 4 m or more, and its construction method.

  As partition walls for clean rooms and the like, there are construction examples in which the floor height is extremely high, for example, 7 m to 11 m. When installing a partition wall having a high floor as described above, conventionally, for example, light gauge steel (LGS) is used back to back, the wall pitch is made fine, or a supporting steel frame is provided (including built-in). ) And other measures are taken. However, when implementing any of the countermeasures, there is no change in the need for a temporary scaffold. When preparing a temporary scaffold in a vast factory, etc., the purpose is to construct a partition wall only. Scaffolding is also required. However, the above-mentioned dedicated scaffolds interfere with other related works, and not only adversely affect the digestion of the process but also require a corresponding temporary cost.

Japanese Unexamined Patent Publication No. 7-1876 JP-A-11-93306 Japanese Patent Laid-Open No. 10-102641

Conventionally, various techniques have been developed and proposed as partition walls and construction methods thereof. However, regarding the partition wall whose floor height is 4 m or more and the construction method thereof, which is a problem to be solved by the present invention, there is no counter plan or prior art to be seen.
For example, in Patent Documents 1 and 2 described above, as a general prior art of a partition wall and its construction method, an upper runner having a downward U-shaped cross section and a lower runner having an upward U-shaped cross section are respectively provided on a ceiling surface and a floor upper surface. Are arranged in such a manner that the receiving grooves face each other in the vertical direction, and studs are built into the receiving grooves of the upper and lower runners, and partition wall surfaces are attached and fixed along both sides of the studs. Only the wall and its construction method are disclosed.
In addition, in FIGS. 1-10 of the said patent document 2, the shelf which protrudes horizontally in the same height position of the inner surface of the flange of the both sides which form the receiving groove of a lower runner is formed, and the lower surface of a stud is the said shelf Attention is paid to the point that it is built on top of it.

  In addition, the partition wall disclosed in Patent Document 3 also has an upper runner with a downward U-shaped cross section on the ceiling surface, a lower runner with an upward U-shaped cross section on the floor surface, and each receiving groove facing up and down. It is recognized as a structure in which the studs are installed in the receiving grooves of the upper and lower runners, and partition wall materials (interior boards) are attached to both sides of the studs. The partition wall surface material is composed of two boards with a reinforcing material sandwiched between sandwich structures.

  In short, the partition wall and its construction method heard as the prior art, as represented by the above Patent Documents 1 to 3, how to build the partition wall installed in a normal floor-high room. In the content that was devised so that a tall partition wall applied to a room with a high floor height and its construction could be easily installed without preparing a temporary scaffold Absent.

The purpose of the present invention is as follows. For example, it is not necessary to prepare a temporary scaffold for the installation work of a partition wall panel that is tall enough to exceed 4 m and extends to 11 m and can accommodate a room with a high floor. The tall partition wall panels can be moved to the upper runner and the lower part by a simple method such as using a forklift, an overhead crane, or an aerial work platform to raise the wall panel or move it to the mounting position for a short distance. It is providing the partition wall devised in the structure which can perform the operation | work built in the receiving groove of a runner, and the operation | work of fixing, and its construction method.
The next object of the present invention is that the cross-section is U-shaped, and the above-mentioned spine is inserted into the receiving grooves of the upper runner and the lower runner that are installed in the ceiling and the floor so that the receiving grooves are opposed to each other vertically. To provide a partition wall and a construction method thereof capable of efficiently installing and installing a high partition wall panel by a so-called Kendon-type building method, which can reduce temporary materials and labor, and shorten the construction period. It is.

As a means for solving the above problems, the partition wall according to the invention described in claim 1 is:
A partition wall using a tall partition wall panel 1 that can accommodate high floor rooms,
The upper runner 3 having a receiving groove 3a having a U-shaped cross section facing downward is installed on the ceiling portion 2 in the room, and one flange 3b forming the receiving groove 3a has a Kendon type construction rather than the other flange 3c facing each other. It has a structure that is long so that it can be
The lower runner 5 having a receiving groove 5a having an upward U-shaped cross section installed on the floor 4 in the room is arranged so that the receiving groove 5a faces the receiving groove 3a of the upper runner 3 vertically.
The partition wall panel 1 is supported at its lower end in the receiving groove 5a of the lower runner 5, and the upper end of the partition wall panel 1 forms a receiving groove 3a of the upper runner 3 and protrudes long downward. The receiving groove 3a formed by 3b and the other short flange 3c is inserted into and supported by a depth that secures a constant squeezing margin m.

The construction method of the partition wall according to the invention described in claim 2 is:
A construction method of a partition wall in which a tall partition wall panel 1 is built to accommodate a high floor room,
One flange 3b forming a receiving groove 3a having a U-shaped cross-section downwardly protrudes from the lower surface of the ceiling portion 2 of the chamber to be longer than the other facing flange 3c so that a Kendon type can be built. Installing the upper runner 3;
The lower runner 5 having a configuration in which the flanges 5b and 5b on both sides of the chamber 4 are formed with receiving grooves 5a having a U-shaped cross section on the floor 4 of the chamber, and the receiving grooves 5a are located above and below the receiving grooves 3a of the upper runner 3. A process of installing in opposing arrangements;
The tall partition wall panel 1 that can accommodate a room with a high floor height is hooked on the inner surface of the flange 3b that protrudes long downward and forms the receiving groove 3a of the upper runner 3. The partition wall panel 1 is temporarily supported in an inclined posture and inserted into the receiving groove 3a by a Kendon type that slides upward along the flange surface in the inclined posture, and is raised to a vertical posture. The lower end portion is inserted into the receiving groove 5a of the lower runner 5 and supported.

The invention described in claim 3 is the partition wall described in claim 1,
The lower runner 5 is an inner surface of the flanges 5b and 5b on both sides forming a receiving groove 5a having a U-shaped cross section upward, and is located at the depth position of the squeezing allowance n of the partition wall panel 1 and the lower end of the partition wall panel 1 The partition wall panel 1 has a lower end supported on the projecting portion 5c.

According to the construction method of the partition wall using the tall partition panel 1 which can respond to the room of high floor height and the partition wall according to the invention described in claims 1 to 3, the lower runner 5 As a matter of course, there is no problem in the work of installing the upper runner 3 by attaching the upper runner 3 to the ceiling part 2 so that the floor height is 4m to 11m, raising the partition panel 1, and the upper end of the upper runner as the upper runner. The work to be fitted and fixed in the vehicle 3 can also be performed by using the aerial work vehicle 13 without having to assemble a temporary scaffold.
In the above example, the partition wall panel 1 that is so tall that the height is as high as 11 m is installed in the runners 3 and 5, and the panel 1 is replaced with, for example, the overhead crane 12 or the forklift 14. The upper portion of the panel 1 is held up as shown in FIG. 1 by a two-dot chain line to the inner surface side of the flange 3b that protrudes long downward and forms the receiving groove 3a of the upper runner 3. Temporarily support in a tilted position. Then, the upper portion of the partition wall panel 1 in the inclined posture is lifted upward while sliding along the surface of the flange 3b, and is inserted into the receiving groove 3a of the upper runner 3 in a so-called Kendon type to stand in a vertical posture. Subsequently, the partition wall panel 1 in a vertical posture is lifted using the margin of the receiving groove 3a of the upper runner 3, and the lower end portion thereof is fitted into the receiving groove 5a of the lower runner 5, thereby performing the erection. be able to. Thus, the lower end of the partition wall panel can be supported on the horizontal protrusion of the lower runner.
As described above, it is not necessary to install a temporary scaffold for the construction work of the tall partition wall panel 1, the labor required for assembling the temporary scaffold can be saved, the construction period can be shortened, temporary scaffold materials, etc. The cost required for preparation can be reduced.

According to the partition wall of the present invention, the partition wall panel 1 can be implemented by adopting a lightweight and heat-insulating panel. And if necessary, glass wool can be filled into the hollow portions in the receiving grooves 3a and 5a of the upper runner 3 and the lower runner 5 to provide a structure with high sound insulation and heat retention.
Moreover, when the lower end of the partition wall panel 1 is placed on and supported by the horizontal protrusion 5c of the lower runner 5, even if the inundation flows on the floor surface during rainfall or construction, the partition wall panel 1 There is little direct adverse effect, and the water is easy to flow, and there is little inconvenience to leave for a long time.

It is a vertical sectional view of the partition wall by this invention, and the point which builds in the partition wall panel by Kendon type is written together. It is a front view which shows the installation condition of the partition wall by this invention. It is the figure explaining the point of the operation | work which raises a tall partition wall panel. It is the figure explaining the different point of the operation | work which raises a tall partition wall panel.

The present invention is implemented as a partition wall using a tall partition wall panel 1 that can accommodate a room having a high floor height.
In the upper runner 3 having a receiving groove 3a having a U-shaped downward cross section installed on the ceiling portion 2 of the chamber, one flange 3b forming the receiving groove 3a has a Kendon type construction rather than the other flange 3c facing each other. Is sticking out as long as possible.
The lower runner 5 having the receiving groove 5a having an upward U-shaped cross section installed on the floor 4 of the chamber has the same height of the back of the flanges 5b and 5b on both sides forming the receiving groove 5a. The upper runner 3 is installed so as to face the receiving groove 3a up and down, and supports the lower end of the partition wall panel 1 at a position where the inner wall of the flange 3b on both sides secures the squeezing allowance n of the partition wall panel 1 The projecting portion 5c is provided so as to be relatively incline horizontally.
The partition wall panel 1 is supported at its lower end in the receiving groove 5a of the lower runner 5, and the upper end of the partition wall panel 1 forms a receiving groove 3a of the upper runner 3 and protrudes long downward. The receiving groove 3a formed by 3b and the other short flange 3c is fitted in and supported by a length that secures a constant squeezing allowance m.

Moreover, the construction method of the partition wall which uses the tall partition wall panel 1 which can respond to the above-mentioned room with a high floor height has the receiving groove 3a of a U-shaped cross section facing down on the lower surface of the ceiling part 2 of the said room. A step of installing the upper runner 3 having a configuration protruding so as to be able to be built in a Kendon type than the other flange 3c facing one flange 3b to be formed;
The floor 4 of the chamber is provided with a lower runner 5 having a configuration in which flanges 3b, 3b on both sides are formed with receiving grooves 5a having a U-shaped cross section, and the receiving grooves 5a are vertically connected to the receiving grooves 3a of the upper runner 3. A process of installing in an arrangement opposite to each other,
The tall partition wall panel 1 that can accommodate a room with a high floor height is hooked on the inner surface of the flange 3b that protrudes long downward and forms the receiving groove 3a of the upper runner 3. The partition wall panel 1 is temporarily supported in an inclined posture and is inserted into the receiving groove 3a by a Kendon type that slides up the upper end portion along the flange surface in the inclined posture and is raised to a vertical posture. The lower end portion of the lower runner 5 is inserted into the receiving groove 5a of the lower runner 5 and supported.

In the following, the present invention will be described based on illustrated embodiments.
First, in FIG. 1, the main structure of the partition wall constructed according to the present invention is shown as a sectional view. This embodiment is a cross-sectional structure diagram of a partition wall using a partition wall panel 1 having a relatively high back so that it can accommodate a room having a high floor height H of, for example, 4 m to 11 m. Incidentally, the structure of such a tall partition wall panel 1 is omitted from the detailed illustration, but as an example, the outer surface of the heat insulating material as a core is covered with a thin painted iron plate, a zinc aluminum alloy plated steel plate or the like Will be produced.
As a main element constituting the partition wall in FIG. 1, an upper runner 3 having a receiving groove 3 a having a U-shaped downward cross section is provided on the ceiling 2 (ceiling slab surface or beam lower surface) of the chamber. The plurality of anchor bolts 10 that are retrofitted or attached are firmly fixed and installed. As shown in detail in FIG. 1, one flange 3b forming the receiving groove 3a of the upper runner 3 protrudes longer than the other facing flange 3c so that a Kendon-type erection operation described later is possible. ing. Incidentally, the length of the one flange 3b is 150 mm while the length of the other flange 3c facing each other is 90 mm as an example. In this case, the length 90 mm of the other flange 3 c is a dimension example that includes a squeeze allowance m for fitting the upper end of the partition wall panel 1 as 45 mm.

  Next, on the floor portion 4 in the room, a lower runner 5 having a receiving groove 5a having a U-shaped cross-section upward is arranged such that the receiving groove 5a is opposed to the receiving groove 3a of the upper runner 3 described above and below. In addition, the floor 4 is firmly fixed by a plurality of anchor bolts 10 that are retrofitted or attached to the floor 4. In the case of the lower runner 5, the flanges 5b and 5b on both sides forming the receiving groove 5a are equal to each other, and are formed to be 70 mm as an example. The squeeze allowance n for fitting the lower part of the partition wall panel 1 is designed to be 35 mm, and the lower end of the partition wall panel 1 is supported on the inner side surfaces of the flanges 5b and 5b on both sides at the depth position of the squeeze allowance n. The projecting portions to be provided are disposed so as to be horizontally opposed to each other. The lower end of the partition wall panel 1 fitted into the receiving groove 5a is supported by the protrusions 5c and 5c, and has a support structure in which about 35 mm is floated on the surface of the floor 4. Therefore, even if the inundation W flows on the floor due to the necessity during rain or construction, there is little direct adverse effect on the partition wall panel. And the said immersion water W is easy to flow and there are few inconveniences to leave for a long time.

As described above, the partition wall panel 1 is screwed in the horizontal direction from both outer sides of the flanges 5b and 5b in a state where the lower end of the partition wall panel 1 is fitted into the receiving groove 5a of the lower runner 5 and supported on the protruding portions 5c and 5c. It is fixed by a plurality of retaining screws 6, 6 that are penetrated. Further, the upper end portion of the partition wall panel 1 is also fitted into the receiving groove 3a of the upper runner 3, and, for example, the short flange 3c side in a fitted state in which a design allowance m (for example, m = 45 mm) is secured. And is fixed by a long reamer screw 7 that penetrates the partition wall panel 1 and penetrates the flange 3b that protrudes to the opposite side.
In addition, concave step portions 3d and 5d are formed in the longitudinal direction at the corners on both sides of the upper runner 3 and the lower runner 5, and the concave step portions 3d and 5d include the ceiling portion 2 or the floor portion 4 and The gap is filled with mortar 8 or the like to increase the fixing degree and to ensure a good finish.
In addition, a heat insulating material or a sound insulating material can be filled in the cavity formed by the receiving grooves 3a and 5a of the upper runner 3 and the lower runner 5 as a margin of depth.

  FIG. 2 shows a completed front structure of a partition wall in which a plurality of partition wall panels 1 built as described above are installed in a state of being arranged side by side. Incidentally, in the case of a present Example, the width dimension of the left-right direction of the partition wall panel 1 is about 1 m.

Next, the construction method of the partition wall comprised as mentioned above is demonstrated.
As a construction method in which the tall partition wall panel 1 is built in the receiving grooves 3a and 5a of the upper and lower runners 3 and 5 so as to correspond to a room with a high floor height H, first, the ceiling part 2 of the room is used. Start by installing the upper and lower runners 3 and 5 on the lower surface and the floor portion 4.
As preparations for this, as an alternative to constructing a temporary scaffold, as illustrated in FIGS. 3 and 4, the overhead crane 12 used in other constructions and an aerial work vehicle that can accommodate high floor rooms 13 or a necessary number of forklifts 14 are prepared.

Then, first, the aerial work vehicle 13 is steered, and the process of installing the upper runner 3 on the ceiling portion 2 is advanced. Of course, as described above, in the upper runner 3, one flange 3b that forms the receiving groove 3a having a U-shaped cross section is protruded longer than the other flange 3c that faces the upper runner 3 so that a Kendon type can be built. It is a configuration. When a worker riding on the work cage 13a of the aerial work vehicle 13 attaches the anchor bolt 10 later, the work vehicle 13 of the same aerial work vehicle 13 is arranged along the installation position of the upper runner 3 that has been marked on the lower surface of the ceiling portion 2 in advance. And anchor bolts 10 are installed at a required pitch. Then, according to the arrangement of the anchor bolts 10, the aerial work vehicle 13 is steered to press the web surface of the upper runner 3 against the ceiling portion 2, temporarily fastened, and fastened to each anchor bolt 10. Proceed with the work and install the upper runner 3 on the ceiling 2.
Furthermore, if necessary, the mortar 8 or the like is filled in the gap between the concave step portion 3d at the corners on both sides of the upper runner 3 and the ceiling portion 2 to increase the fixing degree and to secure the finish. , It is convenient to carry out together.
The use of the aerial work vehicle 13 is also effective for the installation work of the overhead crane 12.

  Next, on the floor 4, as a parallel operation, the lower runner 5 in which the flanges 5b and 5b having the same height on both sides form a receiving groove having a U-shaped cross section is formed upward. The process of installing in the arrangement | positioning which opposes the receiving groove 3a of the upper runner 3 up and down is advanced. Also in this case, when the anchor bolt 10 is retrofitted, the anchor bolt 10 is installed at a required pitch along the installation position of the lower runner 5 marked on the surface of the floor 5. Then, on the same floor 4, the lower runner 5 is placed on the floor 2, temporarily fixed, and the lower runner 5 is installed in the manner of proceeding with the fastening to each anchor bolt 10. Proceed. Then, the work of increasing the fixing degree by filling the gap between the concave step portion 3d at the corners on both sides of the lower runner 5 and the floor portion 4 with mortar 8 or the like and ensuring good finishing is also carried out.

When the installation of the upper and lower runners 3 and 5 is completed as described above, the process of raising and building the tall partition wall panel 1 that can accommodate a room with a high floor is advanced. The working method of raising and building up the tall partition wall panel 1 can be roughly divided as shown in FIGS. However, the working method is not limited to the above two methods.
First, the working method shown in FIG. 3 is a method of using the overhead crane 12.
In this case, the overhead crane 12 is installed on the back surface (outer surface) side of the flange 3b protruding long downward from the upper runner 3 as shown in FIG. As will be described later, the partition wall panel 1 built in the upper and lower runners 3 and 5 is installed by moving laterally so as to abut against the partition wall panel 1 in order. It is not necessary to install it so that the part runner 3 can move in the longitudinal direction. What is necessary is just to install so that a movement to the longitudinal direction of the upper runner 3 is suitably carried out as needed. And as for the partition wall panel 1, the lower end part hits the outer surface of the lower runner 5 installed as mentioned above, and it was made to lie in the direction which does not slide any more, and it is in the upper side position of the same partition wall panel 1 The wire 12a of the overhead crane 12 is bound. Then, the overhead crane 12 is driven to raise the partition wall panel 1, and as shown in FIG. 1, the upper part of the partition wall panel 1 is moved downward while forming the receiving groove 3 a of the upper runner 3. It is temporarily supported in an inclined posture held on the inner surface of the flange 3a that protrudes long. In this inclined posture, the weight of the partition wall panel 1 is about 10 kg. Therefore, the upper end portion of the partition wall panel 1 is placed on the flange surface in the manner that two workers lift it from both sides in the inclined posture. It is inserted into the receiving groove 3a of the upper runner 3 by the Kendon type that slides up and rises upward, and stands upright using the depth of the pocket of the receiving groove 3a. Then, by inserting the lower end portion of the partition wall panel 1 into the receiving groove 5a of the lower runner 5 and supporting it, the installation work of the one partition wall panel 1 is finished for the time being.

On the other hand, the working method shown in FIG. 4 is a method using a forklift 14.
Also in this case, the partition wall panel 1 is laid in a direction in which the lower end of the partition wall panel 1 hits the outer surface of the lower runner 5 and does not slide any further, and the partition wall panel 1 has a dedicated stand for the forklift 14 at the upper end side position. The raising jig 14a is installed and supported. Then, the upright jig 14 a is supported by the fork of the forklift 14 by maneuvering the forklift 14. Then, the forklift 14 is slowly advanced toward the lower runner 5 and the fork support arm 14b is extended vertically upward to raise the partition wall panel 1. As a premise of this work, the raising jig 14a is provided with a roller (or a wheel) or a sliding material for sequentially sliding the support points of the partition wall panel 1 at the support portion of the partition wall panel 1, and the partition wall The raising operation of the panel 1 is facilitated.
Thus, after temporarily supporting the upper part of the partition wall panel 1 in an inclined posture held on the inner side surface of the flange 3a that protrudes long downward, one of which forms the receiving groove 3a of the upper runner 3, is shown in FIG. As explained, the upper part of the partition wall panel 1 is slid along the flange surface and lifted upward in the manner that two workers lift it from both sides while maintaining its inclined posture. The runner 3 is inserted into the receiving groove 3a. Furthermore, the vertical depth is raised using the depth of the receiving groove 3a, and the lower end portion of the same partition wall panel 1 is inserted into the receiving groove 5a of the lower runner 5 to be supported.

After that, the partition wall panels 1 built in the upper and lower runners 3 and 5 are moved side by side so as to abut against the partition wall panel 1 in order, and the installation state as shown in FIG. 2 is obtained. When the installation position is determined in this way, the upper and lower runners are screwed into the upper and lower ends of each partition wall panel 1 by screwing the reamer screw 7 and the set screw 6 respectively, using the aerial work vehicle 13 as well. The installation work is completed by firmly fixing to 3 and 5.
Therefore, even if the tall partition panel 1 is used, assembly of a temporary scaffold or the like is unnecessary for the construction of the partition wall and the partition wall. Therefore, the labor required for assembling the temporary scaffold can be saved, the construction period can be shortened, and the cost required for the temporary scaffolding materials can be reduced.

  Although the present invention has been described based on the illustrated embodiment, the gist of the present invention is not limited to the illustrated embodiment. It will be mentioned as a matter of course that the present invention naturally includes the scope of design changes and other modifications / applications made by those skilled in the art as necessary.

DESCRIPTION OF SYMBOLS 1 Partition panel 2 Ceiling part 3 Upper runner 4 Floor part 3a, 5a Receiving groove 3b The flange protruded long

Claims (3)

A partition wall using a tall partition wall panel that can accommodate high floor rooms,
The upper runner installed on the ceiling of the room and having a receiving groove with a U-shaped cross section facing downward is such that one flange forming the receiving groove can be built in a Kendon type rather than the other flange facing each other. Is a configuration that is long protruding
The lower runner having a receiving groove with an upward U-shaped cross section installed on the floor of the room, the receiving groove is installed in an arrangement vertically opposite to the receiving groove of the upper runner,
The partition wall panel has a lower end supported in a receiving groove of the lower runner, and an upper end of the partition wall panel forms a receiving groove of the upper runner, one of the flanges protruding downward and the other short flange A partition wall that can accommodate a high floor height and is supported by being inserted into a receiving groove formed at a depth that secures a certain amount of swallowing. A partition wall construction method in which tall partition wall panels are built to accommodate high floor rooms,
An upper runner having a configuration in which one flange that forms a U-shaped cross-section receiving groove downwardly protrudes to the lower surface of the ceiling portion of the chamber so as to be able to be built in a Kendon style rather than the other flange facing the chamber. The process of installing
A step of installing a lower runner having a configuration in which a flange on both sides forms a U-shaped cross-section receiving groove on the floor of the chamber in an arrangement in which the receiving groove is vertically opposite to the receiving groove of the upper runner; ,
The tall partition wall panel, which can accommodate a high floor height room, is assumed to be in a slanted posture with its upper part held on the inner surface of a flange that protrudes long downward, which forms the receiving groove of the upper runner. The upper part of the partition wall panel is inserted into the receiving groove with the Kendon type that slides up along the flange surface while keeping the inclined position, and is raised to the vertical position. A method for constructing a partition wall capable of responding to a high floor height, characterized in that it is inserted into a receiving groove and supported.   The lower runner is the inner surface of the flanges on both sides that form a U-shaped cross-section receiving groove upward, and the protrusion that supports the lower end of the partition wall panel is horizontally positioned at the depth of the squeeze allowance of the partition wall panel. 2. The partition wall according to claim 1, wherein the partition wall is provided so as to be opposed to each other, and a lower end of the partition wall panel is supported on the protruding portion.

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