JP2000120220A - Light-weight beam and its fitting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light-weight beam which is formed by connecting folded members of metallic plates back to back and excellent in the supporting strength of loads and which can realize a large-sized room arrangement in a new building or a reconstructing building, and also provide a fitting structure of the light- weight beam and columns. SOLUTION: Two sheets of beam members 25 made of metallic plates, in which folded members 23, 24 bent to the same side at the upper and lower edges of a back plate 22 are continuously formed, are fixed to each other at the back plates 22 back to back to form a beam member. End metal fittings 27 are fixed at both sides of the back plate 22, in the both ends of the beam member. The fitting structure is constituted of a light-weight beam 21 in which bolt holes 39 are formed in the end metal fittings 27 to insert a fastening bolt along the lengthwise direction of the beam member and a bracket metal 40 formed to shape a container opened at the front face to house the end of the light-weight beam 21, to fix the end of the light-weight beam 21 to a column. The bracket metal is fixed to the column and the end of the light-weight beam 21 is fitted in the bracket metal and then, the column and the end metal fitting 27 of the light-weight beam 21 are connected together by the fastening bolts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light beam used for constructing various types of buildings, a structure for mounting the light beam and a column, and a structure for mutually connecting the light beams.

[0002]

2. Description of the Related Art FIGS. 20, 21 and 22 show a joint structure of a pillar and a beam in a conventional wooden building. In the example shown in FIG. The ends are fitted, and the upper and lower corners of the column 1 and the beam 3 are joined by fastening the L-shaped bracket 4 and the nail 5.

FIGS. 21 and 22 show an example of a joint structure of a machined beam and a column using a glued laminated lumber. The mounting plate 6 is fixed to the column 1, a notch 7 is formed at the upper edge, and a bolt hole is formed below the plate. A mounting bracket 10 formed in a T-shape by a connecting plate 9 provided with a fixing member 8 is fixed to the column 1 by four bolts 11, and a slit 12 for releasing the head of the connecting plate 9 and the bolt 11 is provided at an end of the beam 3 a. A pin 13 is erected above the slit 12, a bolt hole 14 is provided below the pin 13, the slit 12 of the beam 3 a is inserted into the coupling plate 9, and the pin 13 is cut into the notch 7. The work beam 3a is fastened to the mounting bracket 10 with the bolt 15 inserted through the bolt holes 8 and 14 in a state of being fitted and temporarily fixed.

[0004]

However, in the former joining method, since the concave portion 2 is provided on the side surface of the column 1, the strength of the column 1 is reduced, and the processing of the column 1 is troublesome.
Wooden beams make it difficult to secure large timber.

[0005] In the latter example of the processed beam 3a, the processed beam 3a itself is expensive and heavy in weight, and the construction is large.

[0006] In recent years, the floor plan of a house has been increasing in size, and three-story wooden buildings have been seen in many cases. One of the purposes of replacement is to increase the floor plan and secure a space by adopting a home elevator. is there.

For example, in an LDK of 15 to 20 tatami mats,
5 to 3 beams are required. In order to satisfy such a condition with the above-described conventional joining method or processed beam, the height of the beam is 45 °.
cm is required, which makes the beam extremely heavy,
Not only does it take time and effort to attach to the pillars, but it also costs more, and the height of the beams reduces the ceiling height, making it possible to increase the size of new and replacement floor plans. Is difficult.

It is an object of the present invention to form bent metal sheets by joining them in a back-to-back manner, which is inexpensive, lightweight, and excellent in load-bearing strength. It is an object of the present invention to provide a lightweight beam capable of realizing the above, a structure for mounting the lightweight beam and the column, and a structure for mutually connecting the lightweight beam.

[0009]

Means for Solving the Problems To solve the above-mentioned problems, a first aspect of the present invention is to use a metal plate and connect a bent portion which is bent on the same surface side to upper and lower edges of a back plate. The beam members are fixed back-to-back at the back plate to form a beam material, and end fittings are fixed at both ends of the beam material on both sides sandwiching the back plate. And a bolt hole for inserting a fastening bolt along the longitudinal direction of the beam member is adopted.

[0010] According to a second aspect of the present invention, two beam members, each of which is formed by connecting a bent portion bent to the same surface on the upper and lower edges of a back plate using a metal plate, are fixed back to back at the back plate portion. To form a beam, fix the end fittings on both sides of the back plate at both ends of the beam, and insert a fastening bolt into the end fitting along the length direction of the beam. A light beam having a bolt hole for the light beam, and a receiving member for fixing an end of the light beam to a column. The receiving member is formed in a container shape with an open front surface to accommodate an end of the light beam. The receiving metal fitting has a configuration in which a through hole for a fixing member for attaching the receiving metal member to a pillar and a through hole for a fastening bolt for connecting the pillar and an end fitting of the lightweight beam are provided.

According to a third aspect of the present invention, in the second aspect of the present invention, the end of the light beam is housed in the receiving fitting at a lower portion of the receiving fitting and a lower surface of an end portion of the light beam accommodated in the receiving fitting. In this case, provision is made for provision of temporary fixing engagement portions which are fitted to each other.

According to a fourth aspect of the present invention, two beam members, each of which is formed by connecting a bent portion bent to the same surface on the upper and lower edges of a back plate using a metal plate, are fixed back to back at the back plate portion. To form a beam, fix the end fittings on both sides of the back plate at both ends of the beam, and insert a fastening bolt into the end fitting along the length direction of the beam. Light beam with a bolt hole for it, a joint fitting for fixing the end of this light beam in the middle of another light beam, and fastening for fixing the end of the light beam and the middle of another light beam It consists of a bolt, the joint fitting is a container-shaped receiving fitting in which the front face is open and the end of the lightweight beam is accommodated, and is fixed to the back face of the receiving fitting,
This configuration adopts a configuration in which locking metal fittings are provided at the upper and lower ends with locking portions for bending portions of the beam member.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

In the first embodiment shown in FIGS. 1 to 15, the lightweight beam 21 is made of a metal plate such as a steel plate or an aluminum plate. , 24 are fixed in a back-to-back manner at the back plate 22 to form a beam 26, and both ends of the back 26 sandwich the back plate 22 at the end of the beam 26. The end fitting 27 is fixed at the position shown in FIG. 2 and a bolt hole for inserting a fastening bolt along the length direction of the beam 26 is provided in the end fitting 27. Note that end fittings 27 having the same structure are fixed to both ends of the lightweight beam 21.

The beam member 25 is, for example,
The back plate 22 of the beam member 25 is, for example, a strip having a height of about 240 mm using a metal plate having a thickness of 1.2 mm. 40 mm wide horizontal part 28 bent from the edge to one side
A vertical portion 29 having a height of 25 mm, which is bent inward at right angles from the tip of the horizontal portion 28 toward each other;
9 and a 10 mm wide inward portion 30 which is bent at right angles toward the back plate 22 from the front end of the back plate 22. The beam member 26 is formed by combining the two beam members 25, 25 described above with the portion of the back plate 22. The beam material 26 is formed by fixing the overlapped portion by spot welding or caulking, and the upper and lower sides of the vertical back plate 22, which is a two-layered structure, are bent at the bent portions 2 on both sides.
It becomes a cross-sectional structure reinforced by 3, 24, and is lightweight and excellent in load supporting strength. The length of the beam member 26 is set to a length corresponding to the column interval to be used, and the overlapping back plate 22 is provided with a piping hole 31 or a wiring hole at an appropriate position.

The back plate 2 overlapping at both ends of the beam 26
The end fittings 27 fixed at the positions on both sides of the end plate 2 are made of a single metal plate, and the end plate 32 for closing the end of the beam member 25 is used.
A mounting portion 33 which is continuous from one end of the end plate 32 and overlaps with the back plate 22; a substantially L-shaped overhang portion 34 which is continuous with the attachment portion 33 and bends in an inclined manner; The end fittings 27 are formed by coupling the mounting portion 35 which is continuous with the back plate 22, and the end fittings 27 are arranged at positions on both sides of the back plate 22, and the upper and lower portions of the mounting portions 33, 35 are respectively rivets 36, At 37, it is fixed to the back plate 22 by caulking.

The end fitting 27 is, as shown in FIG.
It has a height that fits between the upper and lower horizontal portions 28, 28 of the beam member 25, and the overhang portion 34 is fitted between the back plate 22 and the inward portion 30, and the end plate 32 and the overhang portion At the upper and lower positions of the part 34, the pillar 1 is extended along the length direction of the beam member 25.
And a bolt hole 39 for inserting a fastening bolt 38 with the bolt.

FIG. 6 shows a connection structure between the light beam 21 and the column 1. The metal fittings 40 used for the connection are made of a metal plate as shown in FIGS. Is formed in a container shape in which the end of the light beam 21 is inserted. A through hole 42 of a fixing tool 41 such as a nail for attaching the receiving tool 40 to the column 1 and an end fitting 27 of the column 1 and the light beam 21 are formed in the receiving member 40. A plurality of insertion holes 43 for the fastening bolts 38 to be connected are provided.

On the lower part of the receiving member 40 and the lower surface of the end of the lightweight beam 21, a cut-and-raised piece 4 provided at the lower part of the receiving member 40 is provided.
4 and a square hole 45 drilled in the lower part of the lightweight beam 21,
When the ends of the lightweight beams 21 are accommodated in the receiving fittings 40, there are provided temporary fixing engaging portions 46 which fit together.

FIG. 5 shows another shape of the receiving bracket 40, which has the same structure as that of FIG. 4 except that the depth is shallow and a cut-out piece 44 is provided at the front edge of the lower surface.

FIG. 7 shows a state in which the above-mentioned receiving bracket 40 is used.
The structure in which the light beams 21 are connected to both sides of the column 1 is shown, and the light beams 21 are fixed on both sides by using the fastening bolts 38 penetrating the column 1. It should be noted that the light beam 21 can be fastened to the column 1 in a similar manner to the column 1 by using the above-mentioned receiving fitting 40 in a similar manner to the column 1 except for the illustration shown in FIG.

FIGS. 8A and 8B show a structure in which the end of the light beam 21 is joined to the middle of another light beam 21. A joint fitting 47, an end of the light beam 21 and other parts are shown. And a fastening bolt 48 for fixing the middle of the lightweight beam 21. FIG. 9 also uses the joint fitting 47,
A state in which the lightweight beams 21 and 21 are fastened together with the fastening bolts 48 on both surfaces thereof in the middle of another lightweight beam 21 is shown.

As shown in FIG. 10, the joint fitting 47 has substantially the same structure as the receiving fitting 40 described above.
A receiving member 49 formed in a container shape in which a front surface is opened using a metal plate and the end of the lightweight beam 21 is accommodated, and a flat U-shaped member is formed using a metal plate, and a spot is formed on the back surface of the receiving metal member 49. At the upper and lower ends of the opposing sides, a locking portion 50 for the inside of the bent portion 23 of the beam member 25 is provided, and a locking metal member 51 fixed to the back surface of the receiving metal member 49 by spot welding. And the receiving metal 49 and the locking metal 5
At a plurality of locations on the one overlapping surface, insertion holes 52 for the fastening bolts 48 are provided at positions matching the bolt holes 39 of the end fitting 27 of the lightweight beam 21.

FIG. 16 shows a second embodiment of the lightweight beam 21. Ribs 52 along the length direction of the lightweight beam 21 are machined at a plurality of upper and lower portions of the back plate 22 of the double beam member 25.
The bending strength of the lightweight beam 21 is improved.

FIGS. 17 to 19 show a third embodiment of a lightweight beam, showing different examples of means for reinforcing a back plate and joining means in a member for both beams used in combination with spot welding and rivet joining. .

In the example shown in FIG. 17, an elongate hole 53 is provided in both back plates 22 in the vertical direction, and an arc-shaped rib 54 is formed around the elongate hole 53. The other beam is bent along the inner periphery of the other long hole by processing, and reinforcement by the rib 54 and connection of the two beam members 25 at the bent portion.

In the example shown in FIG. 18, a long hole 55 in the vertical direction is provided in both back plates 22, and a folded peripheral wall 56 is provided around the long hole 55 in both back plates 22. The bending strength has been improved.

In the example shown in FIG. 19, bulging portions 57 projecting from opposite surfaces of both back plates 22 are provided, and the bending strength of the lightweight beam 21 is improved by the bulging portions 57. The portion 57 may have not only a circular shape as shown but also other shapes such as a rhombus and a rectangle, and the bulging portion 57 may be provided with a punched hole.

The light beam of the present invention has the above-described structure. Next, a method of connecting the light beam 21 to the column 1 and the other light beams 21 will be described.

FIG. 11 shows that a light beam 21 is erected between the columns 1 and
FIG. 12 shows a completed state of a beam structure constructed by erection of another light beam 21 between the light beams 21. FIG. 12 is an enlarged view of a joint portion between the light beam 21 and the column 1 and the other light beams 21 in the same. Is shown.

FIG. 6 shows a specific method of joining the lightweight beam 21 and the column 1.
1 and the lightweight beam 21 is dropped between the receiving brackets 40 facing each other. When the end of the light beam 21 is fitted into the receiving member 40, the square hole 45 provided on the lower surface of the light beam 21 engages with the cut-and-raised piece 44 of the receiving member 40, and the light beam 21 is It is erected in a temporarily fixed state.

The pillar 1 is provided with an end fitting 27 of the lightweight beam 21 in advance.
A bolt hole is drilled at a position corresponding to the bolt hole 39 of the column 1, and the fastening bolt 38 passed through the bolt hole of the column 1 is received from the bolt hole 43 of the bracket 40 to the bolt hole 39 of the end bracket 27.
When the nut is screwed into a fastening bolt 38 projecting from the end fitting 27, the fastening between the column 1 and the lightweight beam 21 is completed.

FIG. 8 shows a method of connecting the middle of the light beam 21 erected between the columns 1 and the end of another light beam 21 erected between the light beams 21. A joint fitting 47 is attached in the middle of 21. The joint fitting 47 is a locking fitting 5 fixed to the back of the receiving fitting 49.
1 in a posture in which the vertical direction thereof is along the length direction of the counterweight light beam 21, and the vertically bent portions 23, 24 of the light beam 21.
By inserting the metal fitting 51 into the vertical position in the insertion position at the insertion position, the locking part 5 provided at the upper and lower ends is provided.
0 engages in the bent portions 23, 24 of the beam member 25,
A joint fitting 47 can be temporarily attached in the middle of the lightweight beam 21.

With another light beam 21 facing the opposing light beam 21, the end of the other light beam 21 is fitted into a receiving fitting 49, and a bolt hole formed in the back plate 22 of the light beam 21 is inserted through a bolt hole. By inserting the bolt 48 into the insertion hole 52 of the joint fitting 47 and the bolt hole 39 of the end fitting 27 and screwing the nut, the middle of the light beam 21 and the end of another light beam 21 can be joined. .

The light beam 21 is made of a metal plate,
Bending portions 23 and 24 that are bent to the same surface side at the upper and lower edges of 2
Are formed by fixing the two beam members 25 in a back-to-back manner at the back plate 22, so that even if the length is increased, the beam is lightweight, has excellent bending resistance, and has a length between 2.5 and 3. It is possible to form a long beam that can cope with the above, and it is possible to realize a new construction of a wooden building and an increase in the floor plan of a replacement.

FIGS. 13 to 15 show examples of floor and ceiling construction for the completed beam structure.
A floor material 61 is laid on the light beam 21 in the beam structure, and a tapping screw 62 is
Is fixed by screwing into the bent portion 23 of the light beam, the mounting bracket 64 of the ceiling plate 63 is arranged crosswise on the lower surface of the light beam 21 in the beam structure, and the mounting bracket 64 is bent by the tapping screw 65. 24 and a ceiling plate 63 stretched on the lower surface of the mounting bracket 64.
Are stacked and fixed with a tapping screw 66, and a lighting fixture 67 is fixed to the ceiling plate 63. In this figure, a state in which the pipe a is passed through the pipe hole 31 is shown, but wiring can be passed through the pipe hole 31. As shown in FIG. 13, the lower bent portion 24 of the lightweight beam 21 is formed in a groove shape. So that this bent part 2
4 can be used as a storage space for the wiring b.

FIG. 15 shows a light beam 21 in a beam structure.
Another means for attaching the ceiling plate 63 to the lower surface of the light beam 21 is provided around the ceiling plate 63, and an engaging portion 68 bent toward the lower surface side is provided, and the engaging portion 68 is locked to the lower bent portion 24 of the lightweight beam 21. By doing so, the ceiling plate 63 is stretched.

[0038]

As described above, according to the present invention, two beam members made of a metal plate having bent portions bent in the same plane on the upper and lower edges of the back plate are connected to each other at the back plate portion. A beam is formed by fixing it back-to-back, and end fittings are fixed to both sides of the back plate at both ends of the beam, and fastening is performed on the end fitting along the length of the beam. Bolt holes for inserting bolts are provided, so the back plate is back-to-back and the upper and lower bends allow it to be lightweight and have excellent bending strength even when lengthened, making it longer and easier to handle. It is possible to form a long beam which is excellent in workability, is inexpensive and can cope with a length of 2.5 to 3 and can increase the size of a new wooden building and a floor plan when replacing the building.

Further, the connection of the light beam to the pillar and the connection of another light beam to the middle of the light beam can be performed by fastening the bolts, so that the fastening operation can be performed simply, efficiently and firmly.

[Brief description of the drawings]

1A is a front view of a main part showing a first embodiment of a lightweight beam, and FIG. 1B is a cross-sectional plan view of the same.

FIG. 2 is a side view showing an end surface of the above.

FIG. 3A is a front view showing a mounting state of a receiving bracket on a pillar, and FIG. 3B is a plan view of the same.

FIG. 4 is a perspective view of a receiving bracket.

FIG. 5 is a perspective view showing another example of the receiving bracket.

FIG. 6A is a front view showing a specific connection state of a lightweight beam and a column, and FIG. 6B is a cross-sectional plan view of the same.

FIG. 7 is a cross-sectional plan view showing a state in which a lightweight beam is connected to two surfaces of a column.

FIG. 8A is a front view showing a joint state of the middle of the light beam and an end of another light beam, and FIG.

FIG. 9 is a cross-sectional plan view showing a state in which the ends of another light beam are joined to two surfaces thereof in the middle of the light beam.

FIG. 10 is a perspective view of a joint fitting.

FIG. 11 is a perspective view of a completed beam structure.

FIG. 12 is an enlarged perspective view of a joint portion between a completed lightweight beam, a column, and other lightweight beams.

FIG. 13 is a longitudinal sectional front view showing an example of construction of a floor and a ceiling for a completed beam structure.

FIG. 14 is a longitudinal sectional side view of the above.

FIG. 15 is a longitudinal sectional front view showing another mounting structure of the ceiling plate with respect to the completed beam structure.

FIG. 16A is a front view showing a second embodiment of a lightweight beam, and FIG. 16B is a longitudinal sectional view of the same.

17A is a front view showing a third embodiment of a lightweight beam, and FIG. 17B is a longitudinal sectional view thereof.

18A is a front view showing another example of the third embodiment of the lightweight beam, and FIG. 18B is a longitudinal sectional view of the same.

FIG. 19A is a front view showing still another example of the third embodiment of the lightweight beam, and FIG. 19B is a longitudinal sectional view of the same.

FIG. 20 is a front view showing a connection structure of columns and beams in a conventional wooden building.

FIG. 21 is an exploded front view showing a connection structure between a pillar and a composite beam in a conventional wooden building before connection.

FIG. 22 (A) is a front view showing the combined state of the above,
(B) is a plan view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 pillar 21 lightweight beam 22 back plate 25 beam member 27 end fitting 40 receiving fitting 47 joint fitting

 ──────────────────────────────────────────────────続 き Continuing on the front page F term (reference) 2E125 AA03 AB12 AC23 AG12 BA41 BB08 BB13 BB16 BB22 BB31 BB35 BC02 BC05 BD01 BE03 BE08 BF04 CA05 CA09 CA13 CA96 EA11 EA33 EA35 EB01 2E163 FA12 FB02 FB04 FB24 FB23 FB23 FB24 FB47 FF01 FF03

Claims (4)

[Claims] 1. A beam member comprising a metal plate and two beam members having bent portions bent to the same surface side coupled to upper and lower edges of a back plate, and fixed in a back-to-back manner at a portion of the back plate. Formed and fixed end fittings on both sides of the back plate at both ends of this beam, and bolt holes for inserting fastening bolts along the length of the beam in this end fitting. Light beams provided. 2. A beam member formed by using a metal plate and fixing two beam members having bent portions bent to the same plane on the upper and lower edges of the back plate in a back-to-back manner at the back plate portion. Formed and fixed end fittings on both sides of the back plate at both ends of this beam, and bolt holes for inserting fastening bolts along the length of the beam in this end fitting. The light beam provided is provided with a metal fitting for fixing the end of the light beam to the column, and the metal fitting is formed in a container shape having an open front surface to accommodate the end of the light beam. And a light beam mounting structure having a through hole for a fixture for attaching the receiving member to the column and a through hole for a fastening bolt for connecting the column and the end fitting of the light beam to the column. 3. A temporary fixing engagement portion which fits into a lower end of the light receiving member and a lower surface of an end portion of the light beam which is accommodated in the receiving member when the end portion of the light beam is accommodated in the receiving member. The mounting structure of the lightweight beam according to claim 2 provided on a pillar. 4. A beam member comprising a metal plate and two beam members having bent portions bent to the same surface on the upper and lower edges of the back plate, which are fixed back to back at a portion of the back plate. Formed and fixed end fittings on both sides of the back plate at both ends of this beam, and bolt holes for inserting fastening bolts along the length of the beam in this end fitting. The light beam provided, a joint fitting for fixing the end of this light beam in the middle of another light beam, and a fastening bolt for fixing the end of the light beam and the middle of another light beam, The joint fitting is
A container-shaped receiving metal fitting having an open front surface to accommodate the end of the lightweight beam, and a locking metal fitting fixed to the rear surface of the receiving metal fitting and provided at the upper and lower ends with a locking portion for the bent portion of the beam member. The formed structure of the lightweight beams.