JPH06346552A - Building structural member and its manufacture - Google Patents

Abstract

PURPOSE:To reduce weight while ensuring prescribed strength, and prevent the mutual interference of each projection part at the two-piece facing connection of a pair of channel members. CONSTITUTION:A building structural member 15 is formed of a first member 16 and a second member 17 having a number of openings 21A, 21B longitudinally provided at a first pitch P1 by lateral drawing work. The webs 17A, 18A of the first member 16 and second member 17 are connected facing each other in the position longitudinally shifted from the position where the respective opening parts 21A, 21B are coincident to each other by a third pitch P3 which is the half of the first pitch P1. The profile edges of the opening parts 21A, 21B deformed in nearly corrugated form in the thickness direction by drawing work are engagingly fitted to each other between the first member 16 and the second member 17, and the facing connection of the webs 16A, 17A which are opening continuous line formed surfaces can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building structural material and a method for manufacturing the same, and can be used as, for example, an intermediate beam of a building unit constituting a unit type building.

[0002]

2. Description of the Related Art Conventionally, a unit construction method often used for building buildings such as houses is to construct a unit-type building by stacking a number of substantially box-shaped building units produced in advance in a factory at a construction site. is there. The building unit is manufactured by mounting a floor material, a ceiling material, interior and exterior materials, etc. on a substantially rectangular parallelepiped frame. The frame is composed of a plurality of columns, an upper beam spanning between the upper ends of these columns, a lower beam spanning between the lower ends of the columns, and a joist that spans a plurality of these lower beams to support the flooring. It is configured to include and. The joists are usually made of wood with a substantially rectangular cross section, but if heavy objects such as a piano can be expected to be installed inside the unit type building, a metal intermediate beam is bridged over the location.

The intermediate beam is a channel material having a substantially C-shaped cross section, and is provided with an opening continuous row forming surface in order to reduce the weight while ensuring a predetermined strength. That is, the web, which is the opening-constituting-row forming surface of the intermediate beam, is provided with an opening consecutive row in which a large number of openings are consecutively arranged at the first pitch in the longitudinal direction thereof. A plurality of continuous rows are arranged side by side at the second pitch in the width direction. The openings in each row of consecutive openings are formed at positions longitudinally displaced from the openings in another row of consecutive openings adjacent to each other by half the first pitch. Each edge forming the outline of the opening is arranged in a substantially lattice shape. This intermediate beam is formed by pulling a long material in which a large number of slits for forming an opening are formed in the width direction,
It is manufactured by expanding and deforming each opening forming slit into the opening. When such a tensile process is performed on the material, a torsional stress is generated at each edge forming the contour of each opening. Therefore, the web, which is the surface on which the openings are continuously arranged, is deformed into a substantially wavy shape extending in the longitudinal direction, and protrusions are alternately formed on both sides in the thickness direction at a predetermined pitch.

[0004]

By the way, in recent years, due to the diversification of building facilities, it is expected that a heavier object than the conventional one will be installed inside a unit-type building. There is strong anxiety to support in. Therefore, it is considered to use a building structure material in which a pair of channel materials are joined in the same direction. In order to increase the joint strength and to save space under the floor of the building unit, this building structural material requires so-called two-piece hugging joining in which the webs of the channel materials are face-to-face joined. However, these intermediate beams, when attempting to face-to-face join the webs that are the opening continuous row forming surfaces,
There has been a problem that the above-mentioned projections interfere with each other and face-to-face bonding cannot be performed. An object of the present invention is to provide a building structure material that can achieve weight reduction while ensuring a predetermined strength, and that does not interfere with each other even if a pair of channel materials are held and joined together, and a manufacturing method thereof. To do.

[0005]

A building structure material according to a first aspect of the present invention is characterized in that a slit forming surface on which a large number of slits for forming an opening is formed is stretched in the width direction to make a first portion in the longitudinal direction. An opening consecutive row is formed in which a large number of openings are consecutively formed at a pitch, and a plurality of the opening consecutive rows are arranged side by side at a second pitch in the width direction, and in each of the opening consecutive rows. A first member and a second member each having an opening-portion-consecutive-row forming surface formed at a position longitudinally displaced by half the first pitch with respect to an opening in another opening-portion-constituting row adjacent to the opening. And the first member and the second member are joined to each other with the opening continuous row forming surfaces facing each other, and the first member and the second member are the opening portions. In the longitudinal direction from the position where Characterized in that it is displaced by bonding. Further, the building structure material of the second invention according to the present invention is characterized in that it is used as an intermediate beam of a building unit constituting a unit-type building.

Further, in the method for manufacturing a building structural material according to the third aspect of the present invention, the slit forming surface is provided in advance on a long material, and the slit forming surface is stretched in the width direction to form the opening. A plurality of continuous rows are provided side by side to form a perforated material, and the perforated material is cut at a position displaced from the opening in the longitudinal direction by a quarter of the first pitch, and the perforated material having the same length is cut. It is characterized in that the building structural material is manufactured by producing a first member and a second member, and joining the first member and the second member with their cut ends aligned.

Further, in the method for manufacturing a building structure material according to the fourth aspect of the present invention, the slit forming surface is provided in advance on a long material, and the material is formed from the slit for forming the opening in the first direction in the longitudinal direction. The material for the first member and the material for the second member having the same length are made by cutting at a position shifted by a quarter of the pitch, and the cut end portions of the material for the first member and the material for the second member are aligned. Are joined together, and the slit forming surfaces of the material for the first member and the material for the second member are simultaneously drawn in the width direction to manufacture the building structural material.

[0008]

In the first aspect of the present invention as described above,
The first member and the second member are joined by being displaced by half the first pitch in the longitudinal direction from the position where the openings coincide with each other. For this reason, the protrusions of the first member facing the outside of the web and the second
The positions of the protrusions facing the inside of the member correspond to each other, and these can be fitted into each other by protrusions and recesses. Therefore, the webs of the first member and the second member can be joined so as to face each other, whereby spot welding or the like can be performed. Then, in the second invention according to the present invention, if the building structural material is used for the intermediate beam of the building unit, a heavy object can be installed inside the building unit.

Further, in the method for manufacturing a building structure material according to the third aspect of the present invention, a long perforated material is cut at a position shifted from the opening in the longitudinal direction by a quarter of the first pitch. At least one end of the building structure material is manufactured in order to manufacture the building structure material by making the first member and the second member of the same length and joining the first member and the second member by aligning the cut ends. There is no need to separate the parts separately. Therefore, the manufacturing work can be simplified, the waste of the perforated material can be reduced, and the manufacturing cost of the building structure material can be reduced.

Further, in the method for manufacturing a building structure material according to the fourth aspect of the present invention, a long material is cut from a slit for forming an opening at a position shifted by a quarter of the first pitch in the longitudinal direction. To make a material for the first member and a material for the second member which have the same length, and to perform the tensile processing in the width direction at the same time after joining the material for the first member and the material for the second member by aligning the cut ends. Since the building structural material is manufactured by, it is not necessary to separately cut and align at least one end of the building structural material, and the tensioning process is required only once. Therefore, the manufacturing cost of the building structure material can be further reduced.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 8 show a first embodiment according to the present invention. The building unit 10 shown in FIG. 1 constitutes a unit type building constructed by a unit construction method, and a floor material (not shown) is preliminarily set in a substantially rectangular parallelepiped frame 11 at a factory.
Ceiling materials, interior and exterior materials, etc. are attached and produced. The frame 11 includes a plurality of columns 12, an upper beam 13 spanning between the upper ends of the columns 12, and a lower beam spanning between the lower ends of the columns 12.
14 and a plurality of joists (not shown) spanning between these lower beams 14 to support the floor material, and a building structural material 15 arranged as an intermediate joist in parallel with these joists. .

As shown in FIGS. 2 to 5, the building structure material 15
Is composed of a first member 16 and a second member 17. Each of the first member 16 and the second member 17 is a channel material having a substantially C-shaped cross section, and is provided with an opening continuous row forming surface in order to reduce weight while ensuring a predetermined strength. The webs 17A, 18A, which are the surfaces for forming the row of continuous parts, face each other and are joined by spot welding or the like. The first member 16 and the second member 17 as described above are formed by pulling a long material 18 as shown in FIG. 6 in the width direction (vertical direction in the drawing).

The material 18 has a substantially C-shaped cross section whose width is smaller than the widths of the first member 16 and the second member 17, and the web 18A has slits 19A, 19A for forming openings at predetermined positions.
It is a slit forming surface on which B is arranged. The opening forming slit 19A has a substantially elongated hole shape extending in the longitudinal direction of the web 18A, and the opening forming slit 19B has a substantially half-moon shape as if the opening forming slit 19A was divided into two. By perforating the material 18 in the width direction, a perforated material 20 as shown in FIG. 7 is formed.

The perforated material 20 has a web 20A in which the web 18A of the raw material 18 extends in the width direction, and the slits 19A and 19B for forming the opening are expanded and deformed to form a substantially rhombic opening. 21A and an opening 21B having a substantially triangular shape, which is obtained by dividing the opening 21A into two, are formed. This perforated material 20 is formed with a row 22 of continuous openings, in which a large number of openings 21A and 21B are continuously arranged at a first pitch P ₁ in the longitudinal direction of the web 20A, and a plurality of openings 20 are continuously connected. The rows 22 are arranged side by side at the second pitch P ₂ in the width direction. Each opening continuous row 22 is arranged in the first direction in the longitudinal direction with respect to the opening 21A or 21B in another opening continuous row 23 adjacent to the opening 21A or 21B in the opening continuous row 22. pitch
It is formed at a position displaced by a third pitch P _3, which is a half of P ₁ . Therefore, the web 20A is substantially lattice-shaped by the edges that form the contours of the openings 21A and 21B.

Such a perforated material 20 is a web of material 18.
Since it is formed by performing a tensile process in the width direction of 18A, a torsional stress is generated at each edge forming the contour of each opening 21A, 21B. Therefore, as shown in FIGS. 7 (B), (C), and (D), the corners of the edges of the openings 21A and 21B alternately project inside and outside the web 20A at the first pitch P ₁ , Web 20
A is deformed into a wave shape extending in the longitudinal direction.

Then, in this embodiment, as shown in FIGS. 2 and 5, the first member 16 and the second member 17 are provided with respective openings.
21A and 21B are joined with being displaced from each other in the longitudinal direction by half of the first pitch P ₁ , that is, the third pitch P ₃ from the position where they coincide with each other. Therefore, the corners of the openings 21A, 21B of the second member 17 are arranged at the center of the openings 21A, 21B of the first member 16 so that the projections generated inside and outside the webs 16A, 17A are fitted to each other by projections and depressions. However, this makes it possible to face each other.

In this embodiment as described above, as shown in FIG. 8, from the arbitrary opening 21A or 21B of the long perforated material 20, the fourth pitch which is half the third pitch P ₃ in the longitudinal direction. The first member 16 and the second member 17 having the same length are cut by cutting at a position (a position indicated by a dotted line in the figure) deviated from P ₄ (that is, a quarter of the first pitch). The building structure material 15 is manufactured by aligning the cut ends of the second member 17 and joining them by spot welding or the like.

According to this embodiment as described above, the building structure material 15 includes the first member 16 and the second member 17 in the openings 21A, 21.
It is configured by joining at a position displaced by a third pitch P ₃ in the longitudinal direction from the position where B coincides. For this reason, in the first member 16 and the second member 17, even if the webs 16A and 17A are deformed into a substantially corrugated shape, the respective protrusions are fitted in concavities and convexities, and face-to-face bonding is possible. Furthermore, since the building structure material 15 of this embodiment is used as an intermediate beam of the building unit 10 that constitutes a unit-type building, the weight increase can be reduced while maintaining a large strength.

The building structure material 15 is a long perforated material 20.
Is cut at a position displaced by a fourth pitch P ₄ in the longitudinal direction from each of the openings 21A and 21B, and the first member 16 and the second member 17 having the same length are cut.
Is manufactured by joining the first member 16 and the second member 17 with their cut ends aligned and joined, so that it is not necessary to separately cut and align at least one end. Therefore, the manufacturing work can be simplified, the waste of the perforated material 20 can be reduced, and the manufacturing cost of the building structure material 15 can be reduced.

FIG. 9 shows a second embodiment according to the present invention. In the present embodiment, the members and the like already described in the first embodiment are designated by the same reference numerals as those in FIGS. 1 to 8, and the description thereof will be simplified or omitted. The building structure material 15 in this embodiment has the same structure as the building structure material 15 in the first embodiment described above, but the manufacturing method is different. That is, as shown in FIG. 9, a long material
Slits 19A, 19B for forming openings are previously formed on the 18 webs 18A.
Is disposed at a predetermined position, and is cut at a position (a position indicated by a dotted line in the drawing) that is displaced from the opening forming slit 19A or 19B by a fourth pitch P ₄ in the longitudinal direction, and the first member having the same length. The material 22 for the second member and the material 23 for the second member, and
The building material 15 is manufactured by joining the material 22 for the member and the material 23 for the second member by aligning the cut ends and joining them by spot welding or the like, and then collectively subjecting them to tensile work in the width direction. Therefore, the slits 19A and 19B for each opening are accompanied by the tensile processing.
Is expanded and deformed into the openings 21A and 21B, and the first member material 22 and the second member material 23 become the first member 16 and the second member 17 while being joined. At this time, the first member 16 and the second member 17
The projections at the edges forming the contours of the openings 21A and 21B automatically fit into each other.

According to the present embodiment as described above, since the building structure material 15 is configured similarly to the building structure material 15 of the first embodiment, the same effect as that of the first embodiment can be obtained. On the other hand, according to the present embodiment, the building structural material 15 is manufactured by joining the first member material 22 and the second member material 23 and then collectively subjecting them to tensile processing, Only one pulling process is required and the manufacturing work can be simplified. Further, in the building structural material 15 of the present embodiment, the first member material 22 and the second member material 23, which will be the first member 16 and the second member 17, are preliminarily joined to each other in a flat state by spot welding or the like. Therefore, the joining can be reliably performed.

It should be noted that the present invention is not limited to the above-described embodiments, and improvements, modifications and the like within the scope of achieving the present invention are included in the present invention. For example, although the channel member having a substantially C-shaped cross section is illustrated as the first member and the second member in each of the above-described embodiments, the first member and the second member of the present invention have a substantially flat plate shape. Alternatively, it may have a substantially L-shaped cross section. Further, each opening may have a substantially circular shape, a substantially elliptical shape, a substantially triangular shape, a substantially polygonal shape, or the like,
It may be set appropriately for implementation. Further, the building structural material in each of the embodiments is applied to the intermediate beam of the building unit, but it is also applicable to columns, upper beams, lower beams and the like. The building structure material of the present invention is applicable not only to a unit-type building constructed by a unit construction method but also to a building having a steel frame constructed by a conventional construction method.

[0023]

According to the first aspect of the present invention, it is possible to provide a building structural material which can be made lightweight while ensuring a predetermined strength. Further, according to the second aspect of the present invention, it is possible to provide a building structure material capable of installing a heavy object inside a building unit. Further, according to the third aspect of the present invention, since the manufacturing work can be simplified and the waste of the perforated material can be reduced, it is possible to provide a method for manufacturing a building structure material having a low manufacturing cost. Further, according to the fourth aspect of the present invention, since the tensioning process only needs to be performed once, the manufacturing process can be omitted, and a manufacturing method of a building structure material with a further lower manufacturing cost can be provided.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a building unit to which a first embodiment of the present invention is applied.

FIG. 2 is a side view showing the building structural material of the embodiment.

FIG. 3 is a sectional view taken along line III-III shown in FIG.

FIG. 4 is a sectional view taken along line IV-IV shown in FIG.

5 is a cross-sectional view taken along line VV shown in FIG.

6A and 6B are a side view and a cross-sectional view showing a material.

FIG. 7 is a side view and a cross-sectional view showing a perforated material.

FIG. 8 is a side view showing a method for manufacturing a building structure material.

FIG. 9 is a side view showing the method of manufacturing the perforated material according to the second embodiment of the present invention.

[Explanation of symbols]

10 Building unit 15 Building structure material 16 First member 17 Second member 16A, 17A Web 18 which is the row forming surface for continuous openings 18 Material 18A Web which is the slit forming surface 19A, 19A Slit for forming openings 20 Perforated material 21A , 21B Opening 22 Continuous row of openings 23 Material for first member 24 Material for second member P ₁ 1st pitch P ₂ 2nd pitch P ₃ 3rd pitch which is half of 1st pitch P ₄ 1st pitch Fourth pitch, which is a quarter

Claims (4)

[Claims] 1. A continuous row of openings, in which a large number of openings are continuously formed at a first pitch in the longitudinal direction, by drawing a slit forming surface in which a plurality of slits for forming an opening are formed in a width direction. A plurality of consecutive opening rows are formed in parallel with each other in the width direction at the second pitch, and the openings in each of the consecutive opening rows are adjacent to the openings in another consecutive opening row. And a second member having opening-consecutive-row-forming surfaces formed at positions displaced by half the first pitch in the longitudinal direction, and these first and second members are provided in each of the openings. In the building structure material, which is joined to each other with the part-consecutive row forming surfaces facing each other, the first member and the second member are deviated by half the first pitch in the longitudinal direction from the position where the openings coincide with each other. Building structure material characterized by being joined. 2. The building structure material according to claim 1, wherein the building structure material is used as an intermediate beam of a building unit forming a unit-type building. 3. The method for manufacturing a building structure material according to claim 1 or 2, wherein the slit forming surface is provided in advance on a long material, and the slit forming surface is stretched in the width direction. A perforated material is formed by arranging a plurality of rows of apertures arranged side by side, and the perforated material is cut at a position displaced from the apertures in the longitudinal direction by a quarter of the first pitch to have the same length. A method for manufacturing a building structure material, comprising: manufacturing the first member and the second member, and manufacturing the building structure material by aligning the cut ends of the first member and the second member and joining them. 4. The method for manufacturing a building structure material according to claim 1, wherein a long material is provided with the slit forming surface in advance, and the material is formed from the slit for forming the opening in the longitudinal direction. The material for the first member and the material for the second member having the same length are cut by cutting at a position shifted by a quarter of the first pitch, and the material for the first member and the material for the second member are cut end portions. Of the first member material and the second member material are simultaneously subjected to tensile processing in the width direction to manufacture the building structural material, which is characterized in that the building structural material is manufactured. Method.