JPH1025878A - Quadrangular cylinder of metal and backing structure for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a backing structure of good reliability by effectively preventing slipping-off of the connection part of a quadrangular cylinder. SOLUTION: A quadrangular cylinder is formed from a metal plate P cut in a specified width in such an arrangement that its two ends are in contact in one plane and that a J-folded part 3 formed by folding one end of the metal plate P inward and further folding its foremost part outward is fitted in a U-folded part 4 continuously by crimping, which 4 is formed by folding the other end of the metal plate P inward, and thereby a connection part 2 continuing in the longitudinal direction is formed. A rib 5 protruding in a channel shape inward from the base end of the U-part 4 in the connection part 2 and contacting with the side face of the J-folded part 3 is formed continuously in the longitudinal direction, and therewith 5 the stiffness of the cylinder is heightened, and slipping-off of the connection part 2 is precluded certainly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal square tube used as a metal base material in interior construction work of a building and a base structure for a building using the same.

[0002]

2. Description of the Related Art A metal base material widely used as an interior construction work for a building is generally specified in Japanese Industrial Standard JISA6517 steel base material for building (wall, ceiling, floor). As a stud defined as a wall material, a stud having a U-shaped cross section is known. This wall stud is surrounded by metal on three sides, but the remaining one is open, so one or more anti-deflation holes are provided on the surface facing the open part, There was a problem in that it could not be used unless the base material was reinforced through this channel.

The open portion is formed in an overbend shape so that its U-shaped ends are directed inward to each other so as not to be displaced by fitting a spacer which is another member.

[0004] Since both surfaces of the overbend shape are naturally board-attached surfaces, a spacer for correcting the overbend is fitted into the open portion, and the portion where the spacer is fitted is a dot. Other parts remain overbend.
In this case, if a seam between the boards comes to a portion where the overbend state is maintained, there is also a problem that a stagger occurs at the seam.

[0005] As a well-known metal flooring material, there is a steel flooring for the Japanese Industrial Standard JISA6519 gymnasium.

A flooring material of a special structure developed for OA floors such as computer rooms is also known.

[0007] Further, in a structure which has been well known as a floor foundation structure of a building (particularly, for a general house), for example, a wooden pulley is arranged on a slab under the floor and crossed over the pulley. In some cases, wooden joists are placed and floor materials are placed on top of them.In this case, as a countermeasure against termites, wooden lures and joists are often impregnated with chemicals for controlling termites .

In recent years, attempts have been made to increase the number of effective floors by lowering the height of each floor in a building (especially a high-rise building). Is required.

However, in the case of the above-described floor-bed structure using a steel floor-bed material for a gymnasium, since it is limited to a gymnasium, it is difficult to lower the floor from the structural point of view and lacks versatility. There is a problem that it is hard to spread in general because of its high cost.

[0010] In the case of an OA floor, many support members having a complicated structure are interposed between the underfloor slab and the floor material, and a joint between each support member and the floor material is provided. Has a structure in which the upper surface of the support member is fitted by applying special processing to the lower surface of the flooring material, complicating the structure, increasing the number of parts and processing steps, and increasing the cost. There is a problem. In addition, the workability deteriorates because much effort is required to adjust the height of each support member. In addition, there is also a problem that the OA floor is exclusively used for the OA floor, and thus lacks versatility and is hardly widely used.

[0011] Further, in the case of constructing a floor base structure by a combination of a wooden pulling and a joist, there is a limit to the lowering of the floor base structure, and the structure itself is complicated, and the assembling work is not complicated. There is a problem that can not be obtained. In addition, there is a problem that simply impregnating the used wood with chemicals is not a complete measure against termites. Furthermore, it can be said that this is a regression to an era where so-called resource saving should be achieved, in which the use of finite timber resources is reduced as much as possible.

[0012] One of the main reasons why metal floor coverings have not been used in ordinary houses is that carpenters do not like to use them because of complicated structures and construction methods.

[0013] Under the circumstances described above, there is an increasing expectation for an underfloor structure using a metal underfloor material that is extremely simple in structure and can be constructed at low cost without requiring special techniques.

In recent years, as shown in FIG. 8, a steel square tube 1 'made by connecting the ends of a metal plate P' formed into a square tube to each other at substantially the center of one of the four surfaces is provided. Is being used.

In this conventional steel square cylinder 1 ',
A J-shaped bent portion 3 'formed by bending one end of the metal plate P' inward and further bending the tip thereof outward.
And a U-shaped bent portion 4 'formed by bending the other end of the metal plate P' inwardly into a U-shape. 'Is formed.

[0016]

However, in the case of the conventional steel square tube 1 'constructed as described above, the two surfaces 1a' and 1b '(that is, the connecting portion 2') to be the board bonding surfaces are used. Force X, Y from the direction of the plane 1c ')
When the vibration is applied or when continuous vibration is applied, the fitting crimping portion between the J-shaped bent portion 3 'and the U-shaped bent portion 4' is disengaged, and the reliability as the base material is reduced. There is a defect that lacks. In particular, there is a problem that it is difficult to adopt this method in places where large forces X and Y act from the directions of the two surfaces 1a 'and 1b', such as under the floor.

The present invention has been made in view of the above points, and has as its object to ensure the reliability as a base material by effectively preventing a connection portion of a rectangular cylinder from coming off. It is assumed that.

[0018]

In order to solve the above-mentioned problems, the metal square cylinder according to the present invention is formed by bending a metal plate P cut to a predetermined width into a square cylinder. And while making both ends touch on one side,
A J-shaped bent portion 3 formed by bending one end of the metal plate P inward and further bending its tip outward.
And a U-shaped bent portion 4 formed by bending the other end of the metal plate P inwardly into a U-shape, and continuously press-fitting to form a connecting portion 2 continuous in the longitudinal direction. A rib 5 protruding inwardly from the base end of the U-shaped bent portion 4 of the connecting portion 2 and in contact with the J-shaped bent portion 3 at a side end face;
Are formed continuously in the longitudinal direction so that the rigidity of the rectangular tube is enhanced by the ribs 5 and the connection portion 2 can be reliably prevented from coming off.

In the first structure for a building according to the present invention,
As a means for solving the above-mentioned problem, a metal plate P cut to a predetermined width is provided between boards 12 constituting wall surfaces.
Is bent in the shape of a square tube, and both ends thereof are in contact with each other on one surface. One end of the metal plate P is bent inward, and the tip is bent outward. A bent J-shaped bent portion 3 and a U-shaped bent portion 4 formed by bending the other end of the metal plate P inward into a U shape are continuously fitted and pressed. Connecting part 2 continuous in the longitudinal direction
And a rib 5 protruding inwardly from the base end of the U-shaped bent portion 4 of the connecting portion 2 and in contact with the side end surface of the J-shaped bent portion 3 in the longitudinal direction. Are formed at predetermined intervals so that the opposing surfaces 1a and 1b on which the connecting portions 2 are not formed are used as a board attaching surface. The structure is obtained.

In the second structure for a building according to the present invention,
As means for solving the above problem, a metal plate P cut to a predetermined width is bent between a floor material 6 and an underfloor slab 7 into a rectangular cylindrical shape, and both ends thereof are in contact on one surface. And a J-shaped bent portion 3 formed by bending one end of the metal plate P inward and further bending the end thereof outward. A U-shaped bent portion 4 formed by bending the other end inward in a U-shape is continuously fitted and crimped to form a connecting portion 2 which is continuous in the longitudinal direction. 2 is formed of a metal in which a rib 5 protruding inward from the base end of the U-shaped bent portion 4 toward the inside and in contact with the side end surface of the J-shaped bent portion 3 is formed continuously in the longitudinal direction. The rectangular cylinders 1, 1,... Are interposed in a horizontal state at a predetermined interval with the surface 1c on which the connecting portion 2 is formed being oriented vertically. Both the upper surface 1a of the respective metallic rectangular cylinder 1, a plurality of cutout 8, 8 ... which is used as a work hole with openings at both ends 10, 10 of the respective metallic square column 1
Are formed at predetermined intervals in the longitudinal direction, and the lower surface 1b and the underfloor slab 7 in each of the metal square dies 1 are placed at the edges of the openings 10 at both ends and below the notch holes 8. By connecting via a plurality of fixing pins 9, 9,
A very simple structure and operation make it possible to obtain a solid underfloor structure.

In the second structure for a building according to the present invention, between the lower surface 1b of the metal square tube 1 and the underfloor slab 7, they are sewn together by the fixing pins 9, 9 and tapered to each other. When a pair of upper and lower adjustment pieces 13 and 14 that are in contact with each other on the surfaces 13a and 14a are slidably provided,
The horizontal adjustment of the metal square tube 1 can be easily performed, and the degree of connection between the metal square tube 1 and the underfloor slab 7 by the fixing pins 9, 9 is further strengthened, and the floor squeak due to the buffering action is prevented. It is preferable in that it is obtained. In this case, if the convex pieces 17 and the concave grooves 18 are formed on the adjusting pieces 13 and 14 so as to extend in the sliding direction and slidably fit to each other, a direction perpendicular to the sliding direction of the adjusting pieces 13 and 14 is provided. In addition, mark reference ends 19, 19, which are partially cut off at the leading end in the sliding direction of the upper adjustment piece 13 so as to be orthogonal to the sliding direction, are more preferable in that the positional deviation to the reference position can be prevented. Edge 1
If the positioning projections 20 which project from the projections 9 and 19 and serve as fixing portions of the positioning screws 21 connecting the adjustment pieces 13 and 14 are formed, the positioning of the adjustment pieces 13 and 14 can be easily obtained. Is more preferable.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

First Embodiment FIGS. 1 and 2 show a metal square cylinder according to a first embodiment of the present invention and a foundation structure for a building using the same (that is, a wall foundation structure). It is shown.

As shown in FIG. 1, the metal square tube 1 is formed by bending a metal plate P cut to a predetermined width into a square tube shape so that both ends thereof are in contact at substantially the center of one surface. J in which one end of the metal plate P is bent inward and the tip is bent outward.
The bent portion 3 and the other end of the metal plate P
A U-shaped bent portion 4 bent in a letter shape is continuously fitted and crimped to form a connecting portion 2 which is continuous in the longitudinal direction.

The metallic square tube 1 has a U-shaped bent portion 4 protruding inward from the base end of the U-shaped bent portion 4 of the mold connecting portion 2 and has a J-shaped bent portion. The rib 5 which contacts the side end surface of 3 is formed continuously in the longitudinal direction.
With such a configuration, the surface (that is, the side surface) 1c of the metal square cylinder 1 on which the connection portion 2 is formed.
When large forces X and Y are applied from the directions of the two surfaces 1a and 1b orthogonal to
, The ribs 5 will regulate even if the fitting crimping portion between the J-shaped bent portion 3 and the U-shaped bent portion 4 in the connecting portion 2 is to be disengaged. Therefore, disconnection of the connection portion 2 is reliably prevented. The ribs 5 also enhance the rigidity of the metal square cylinder 1.

Next, a specific description will be given of a case where the metal square cylinder having the above structure is used as a base material for a wall surface.

First, as shown in FIG. 2, U-shaped runners 11, 11 are arranged on, for example, a ceiling slab surface and a floor surface such that their open sides face each other.

Next, the plurality of metal square cylinders 1 having the above structure
1. The upper and lower ends are fitted into the upper and lower runners 11, 11, and the metal square cylinders 1, 1,.
At a predetermined interval in the flow direction (ie, the directions of arrows A and B in FIG. 2). At this time, the surface 1c on which the connecting portion 2 is formed and the surface (that is, the side surface) 1d facing the surface 1c in each metal square cylinder 1 are in the same direction (that is, the flow direction of the runners 11, 11). Pointed. In this way, the board attaching surfaces 1a and 1b of each metal square tube 1 are arranged in parallel to the span direction of the runners 11 and 11.

Thereafter, a board 12 for top application is stretched on one of the board application surfaces 1a and 1b using a dry wall screw (small screw).

In the case of the wall base structure obtained as described above, even if a force is applied to the metal square cylinder 1 from the direction of the board attaching surfaces 1a and 1b, the J-shape constituting the connecting portion 2 is formed. Since the engagement between the bent portion 3 and the U-shaped bent portion 4 is prevented from being disengaged by the rib 5, it is extremely robust against a force from the direction of the board attaching surfaces 1a and 1b.

Second Embodiment FIGS. 3 to 7 show a foundation structure for a building according to a second embodiment of the present invention.

This substructure for a building is shown in FIGS.
As shown in the figure, a floor material 6 and a concrete underfloor slab 7
Are arranged horizontally in parallel with a predetermined interval between the metal square tubes 1, 1... The metal square tube 1 is arranged with the surface 1c on which the connecting portion 2 is formed being oriented vertically,
The upper surface 1a is used as an attachment surface of the floor material 6, and the lower surface 1b is used as a connection surface with the underfloor slab 7 via adjustment pieces 13, 14 described later. With such a configuration, the metal square cylinder 1 formed of the thin metal plate P can be used as a floor base material, so that a lightweight, robust and low-cost floor base structure can be obtained, and the metal square base The connecting portion 2 does not come off due to an impact when the tube 1 and the underfloor slab 7 are joined.

A plurality of notches 8 are formed on the upper surface 1a of the metal square cylinder 1 at predetermined intervals in the longitudinal direction. The notch hole 8 is a working hole for inserting a nail gun for driving a fixing pin (a concrete pin 9 in the case of the present embodiment) when the metal square tube 1 and the underfloor slab 2 are connected. It is sufficient if the opening area is large enough to allow the nail gun to be inserted, and the shape can be selected appropriately from the rectangular shape shown in the figure. In addition, at both ends of the metal square cylinder 1, the openings 10,
10 and notch 8 are used as working holes.

The lower surface 1b and the underfloor slab 7 of the metal square cylinder 1 are provided in plural numbers (two in this embodiment) at the edges of the openings 10 at both ends and below the notches 8. ) Are connected via the concrete pins 9, 9, and between the head of each concrete pin 9 and the lower surface 1 b of the metal square tube 1, a metal press shared by the concrete pins 9, 9 is used. Plate 15 and elastic plate 1 made of rubber or the like
6 are interposed. The metal plate pressing plate 15 and the elastic plate 16 have substantially the same width as the width of the lower surface 1b of the metal square tube 1 and receive the head of the concrete pin 9 when the concrete pin 9 is driven. A function and a function of pressing down the lower surface 1b of the metal square tube contribute to strengthening of the coupling between the metal square tube 1 and the underfloor slab 2, and the elastic plate 16 prevents floor squeak. .

A pair of upper and lower adjustment pieces are sewn together by the concrete pin 9 between the lower surface 1b of the metal square tube 1 and the underfloor slab 7 and are in contact with each other at the tapered surfaces 13a, 14a. 13 and 14 are slidably provided. The adjusting pieces 13 and 14 have a wedge shape in contact with each other at tapered surfaces 13a and 14a, and the lower adjusting piece 14 located on the underfloor slab 7 side includes:
It is preferable that the underfloor slab 7 is previously glued.
The material of the adjusting pieces 13 and 14 is desirably a hard low-foaming synthetic resin material from the viewpoint that the sliding contact resistance between the tapered surfaces 13a and 14a can be reduced. The adjusting pieces 13 and 14 fill the gap between the underfloor slab 7 and the metal square tube 1 by the degree of polymerization in a state where the tapered surfaces 13a and 14a are in contact with each other, and make the metal square tube 1 horizontal. Make In addition, the degree of connection between the metal square tube 1 and the underfloor slab 7 is further strengthened by the reaction force of the adjusting pieces 13 and 14 once compressed during the connection by the concrete pins 9 and 9.

As shown in FIG. 5, ridges 17 and 17 and concave grooves 18 and 18 extending in the sliding direction and slidably fitted to each other are provided at both ends in the sliding direction of the adjusting pieces 13 and 14, respectively. Each is formed. Further, the lengths of the two adjusting pieces 13 and 14 in the sliding direction are the same, and the leading end of the upper adjusting piece 13 in the sliding direction is provided with a mark reference partly cut away perpendicularly to the sliding direction. Ends 19, 19 and a positioning projection 20 projecting from the mark reference ends 19, 19 are formed. The rear end of each of the ridges 17 in the sliding direction is a horizontal portion 17a which is cut off horizontally.
As a result, the contact between the ridge 17 and the underfloor slab 7 is avoided in the initial stage of the sliding of the upper adjustment piece 13.

The mark reference ends 19, 19 serve as a reference for forming a positioning mark on the lower adjustment piece 13 when the positioning of the upper and lower adjustment pieces 13, 14 is completed during horizontal adjustment by the upper and lower adjustment pieces 13, 14. It becomes. On the other hand, the positioning projections 20 are for screwing the positioning screws 21 from the positioning projections 20 to connect the two adjustment pieces 13 and 14 after the positioning of the two adjustment pieces 13 and 14.

Further, as shown in FIG. 6, a concave portion 22 is formed on the back surface of the upper adjustment piece 13 by hollowing out a central portion in a rectangular shape while leaving the outer peripheral portion. Note that the positioning projection 20 side of the recess 22 is open.

On the other hand, as shown in FIG. 7, a concave portion 23 is formed on the back surface of the lower adjustment piece 14 by hollowing out a central portion thereof in a rectangular shape while leaving an outer peripheral portion. Due to the presence of the concave portion 23, even when the surface of the underfloor slab 7 is not flat, a good contact state between the lower adjustment piece 14 and the underfloor slab 7 can be ensured. Further, center positioning portions 24 and 25 for centering the lower adjustment piece 14 are provided at the center of both ends in the sliding direction of the lower adjustment piece 14. Code 26
Is an air vent groove for bleeding air from the recess 23.

With the above-described structure, when the adjusting pieces 13 and 14 are slid with each other, the position of the adjusting pieces 13 and 14 in the direction perpendicular to the sliding direction is determined by the fitting slide between the ridges 17 and 17 and the concave grooves 18 and 18. Displacement can be prevented,
The horizontal adjustment of the metal square cylinder 1 by the adjustment pieces 13 and 14 can be performed smoothly and quickly, and the mark reference end 1
9 and the positioning pieces 13 and 14 are combined by the positioning projections 20 and the metal square cylinder 1
Horizontal adjustment becomes extremely easy. Further, the recesses 22 and 23 formed on the back surfaces of the adjusting pieces 13 and 14 can average the wall thickness, thereby preventing the concrete pin 9 from cracking at the time of driving.

[0041]

According to the metal square tube of the present invention, a metal plate P cut to a predetermined width is bent into a square tube shape, and both ends thereof are in contact with each other on one surface. One end of the metal plate P is bent inward, and the tip is further bent outward, and the other end of the metal plate P is bent inward. A U-shaped bent portion 4 formed in a U-shape is continuously fitted and crimped to form a connecting portion 2 which is continuous in the longitudinal direction, and a U-shaped bent portion in the connecting portion 2 is formed. A rib 5 protruding inwardly from the base end of the base 4 and being in contact with the side end surface at the J-shaped bent portion 3 is formed continuously in the longitudinal direction. The rigidity of the tube is enhanced, and the connecting portion 2
Is reliably prevented, and there is an excellent effect that it becomes optimal as a base material.

According to the first building foundation structure of the present invention, a metal plate P cut to a predetermined width is bent into a rectangular tube shape between the boards 12 constituting wall surfaces. In addition, a J-shaped bent portion 3 is formed by bending one end of the metal plate P inward, and further bending the tip end of the metal plate P outward. And a U-shaped bent portion 4 formed by bending the other end of the metal plate P inwardly into a U-shape, and continuously press-fitting to form a connecting portion 2 continuous in the longitudinal direction. A rib 5 protruding inwardly from the base end of the U-shaped bent portion 4 of the connecting portion 2 and in contact with the side end surface of the J-shaped bent portion 3 is continuous in the longitudinal direction. Metal square tube 1,1 ...
Are built at predetermined intervals so that the opposing surfaces 1a and 1b where the connecting portions 2 are not formed are used as a board attaching surface, so that a robust wall foundation structure can be obtained by an extremely simple configuration and operation. There is an excellent effect that a worker who does not have a special technique (for example, a carpenter) can perform construction simply and at low cost.

According to the second building foundation structure of the present invention, a metal plate P cut to a predetermined width is bent between a floor material 6 and an underfloor slab 7 into a rectangular tube shape. The metal plate P has a J-shaped bent portion formed by bending one end of the metal plate P inward and further bending its tip end outward. 3 and a U-shaped bent portion 4 formed by bending the other end of the metal plate P inwardly into a U-shape, and press-fitting the connecting portion 2 continuously in the longitudinal direction. A rib 5 protruding inwardly from the base end of the U-shaped bent portion 4 in the connecting portion 2 and in contact with the side end surface of the J-shaped bent portion 3 in the longitudinal direction. The metal square cylinders 1, 1,... Formed continuously are placed horizontally at a predetermined interval with the surface 1c on which the connecting portion 2 is formed being oriented vertically. A plurality of notched holes 8, 8 used as working holes together with openings 10, 10 at both ends of each metal square tube 1 are provided on the upper surface 1 a of each metal square tube 1 in a row state. Are formed at predetermined intervals in the longitudinal direction, and the lower surface 1b of each metal square tube 1 and the underfloor slab 7 are connected to the edges of the openings 10 at both ends and the cutout holes 8 respectively. In the lower part, a plurality of fixing pins 9,
9, a very simple structure and operation result in a robust floor structure, and workers without special skills (for example, carpenters)
However, there is an excellent effect that construction can be performed easily and at low cost and flooring can be easily achieved. In addition, there is an effect that it has versatility that can be adopted not only for a special floor structure but also for a general house.

Further, since the metal square tube 1 is used as a floor substrate, it is very useful as a termite countermeasure.

In addition, under the floor, the metal square tube 1, 1
..Because a lot of space is maintained between each other,
There is also an advantage that accompanying works (for example, laying of heat insulating material, piping of water works, wiring of electric works, installation of floor heating, etc.) can be performed very easily.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of a metal square cylinder used for a foundation structure for a building according to a first embodiment of the present invention.

FIG. 2 is a partial perspective view showing a building foundation structure according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a main part of a building foundation structure according to a second embodiment of the present invention.

FIG. 4 is a perspective view showing a main part of a building foundation structure according to a second embodiment of the present invention.

FIG. 5 is an enlarged perspective view of an adjustment piece used for a building foundation structure according to a second embodiment of the present invention.

FIG. 6 is a back view of a lower adjustment piece used for a building foundation structure according to a second embodiment of the present invention.

FIG. 7 is a rear view of an upper adjustment piece used for a building foundation structure according to a second embodiment of the present invention.

FIG. 8 is a partial perspective view of a conventional metal square cylinder.

[Explanation of symbols]

1 is a metal square cylinder, 1a is an upper surface, 1b is a lower surface, 1c, 1
d is a side surface, 2 is a connecting portion, 3 is a J-shaped bent portion, 4 is a U-shaped bent portion, 5 is a rib, 6 is a floor material, 7 is a slab under the floor, 8 is a cutout hole, and 9 is a fixing pin. (Concrete pin), 9a is a head, 10 is an opening, 12 is a board, 13 and 14 are adjustment pieces, 13a and 14a are tapered surfaces, 15 is a metal holding plate, 16 is an elastic plate, 17 is a ridge, 18 Is a concave groove, 19 is a mark reference end, 20 is a positioning projection, 21 is a positioning screw, and P is a metal plate.

Claims (6)

[Claims] 1. A metal plate (P) cut to a predetermined width is formed by bending a metal plate (P) into a rectangular tube shape, and both ends thereof are in contact with each other on one surface. A J-shaped bent portion (3) having an end bent inward and a tip bent outward, and the metal plate (P)
And a U-shaped bent portion (4) formed by bending the other end inwardly into a U-shape to form a connecting portion (2) continuous in the longitudinal direction by crimping and fitting. A rib (5) protruding inwardly from the base end of the U-shaped bent portion (4) in the connecting portion (2) and in contact with the side end surface of the J-shaped bent portion (3). ) Are formed continuously in the longitudinal direction. 2. A board (12), (1) constituting a wall surface.
2) A metal plate (P) cut to a predetermined width is formed by bending a metal plate (P) into a rectangular tube, and both ends thereof are in contact with each other on one surface. Of the metal plate (P) are bent inward, and the other end of the metal plate (P) is bent inward with the other end of the metal plate (P) bent inward. A U-shaped bent portion (4) bent in a letter shape is continuously fitted and pressed to form a connecting portion (2) continuous in the longitudinal direction. A rib (5) protruding inward from the base end of the U-shaped bent portion (4) inwardly and in contact with the side end surface of the J-shaped bent portion (3) is formed continuously in the longitudinal direction. The metal square cylinders (1), (1),... Formed at predetermined intervals so that the opposing surfaces (1a) and (1b) on which the connecting portions (2) are not formed are used as the board attachment surfaces. Building a foundation structure, characterized by being written Te. 3. A metal plate (P) cut to a predetermined width is bent between a floor material (6) and an underfloor slab (7) into a rectangular tube shape, and both ends of the metal plate (P) are in one plane. And a J-shaped bent portion (3) formed by bending one end of the metal plate (P) inward and further bending the tip thereof outward. The other end of the metal plate (P) is inwardly bent in a U-shape and a U-shaped bent portion (4) is continuously fitted and crimped to form a connecting portion which is continuous in the longitudinal direction. (2) is formed, and the U-shaped bent portion (4) of the connecting portion (2) protrudes inwardly from the base end of the U-shaped bent portion (4) and the J-shaped bent portion (3) is formed. A metal square cylinder (1) formed with a rib (5) in contact with the side end surface continuously in the longitudinal direction, (1), and a vertical surface (1c) on which the connection portion (2) is formed. Orientation The metal square cylinders (1) are disposed at a predetermined interval in a horizontal and parallel state, and are provided on the upper surface (1a) of each metal square cylinder (1). A plurality of notched holes (8), (8)... Used as working holes together with (10) are formed at predetermined intervals in the longitudinal direction, and each of the metal square cylinders (1) is formed. The lower surface (1b) and the underfloor slab (7) are provided with a plurality of fixing pins (9) at the edges of the openings (10) and (10) at both ends and below the notches (8).
An underlayer structure for a building, wherein the underlayer structure is connected via (9). 4. A lower surface (1b) of the metal square cylinder (1).
And a pair of upper and lower adjustment pieces (13) sewn together by the fixing pins (9) and (9) and contacting each other at the tapered surfaces (13a) and (14a). 4. The underground structure for a building according to claim 3, wherein (14) is slidably interposed. 5. The adjusting pieces (13) and (14) are formed with a ridge (17) and a concave groove (18) extending in a sliding direction and slidably fitted to each other. The substructure for a building according to claim 4, characterized in that: 6. A mark reference end (19), (19) formed by partially removing the upper adjustment piece (13) in the sliding direction at right angles to the sliding direction, and the mark reference end (19). 19) and (19), and a positioning projection (20) serving as a fastening portion for a positioning screw (21) for connecting the adjustment pieces (13) and (14). The underground structure for a building according to claim 5, characterized in that: