JP2014211016A - High rigidity beam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high rigidity beam configured to be capable of promoting the improvement of flexural strength while avoiding increase in the amount of work and burden relating to transportation, assembly, disassembly and the like, and also capable of preventing waste of an occupied space.SOLUTION: The high rigidity beam includes a square cylindrical three-dimensional beam 2 and a pair of flat beams 3 holding the three-dimensional beam 2. The three-dimensional beam 2 includes: four long pipe materials 7 arranged quadrilaterally and in parallel with each other; connection materials 8 connecting perpendicularly a plurality of longitudinal positions between the long pipe materials 7; and diagonal members 9 connecting the long pipe materials 7 of both sides between the adjacent connection materials 8 in a brace manner. The flat beam 3 includes: two long pipe materials 7 provided in parallel with each other; the connection materials 8 connecting perpendicularly a plurality of longitudinal positions between the long pipe materials 7; and diagonal members 9 connecting the long pipe materials 7 of both sides between the adjacent connection materials 8 in a brace manner. The high rigidity beam is installed and used by setting the annexing direction of the beams 2, 3 and the longitudinal direction of the beams 2, 3 along a horizontal direction.

Description

  The present invention relates to a high-rigidity beam that can be suitably used at a construction site or the like.

  As a beam used at a construction site, a beam formed by combining round pipes and the like into a three-dimensional shape (square tube shape) is known (for example, see Patent Document 1). This three-dimensional beam is composed of four long tubes provided in parallel with each other at four corners of a quadrangle, and a plurality of longitudinal portions between adjacent long tubes in the longitudinal direction. And a diagonal member (brace) for connecting the long tubular members on both sides in a bracing manner between the connecting members.

  Such a three-dimensional beam is generally used with the beam length direction set to the horizontal direction when constructing a work scaffold or a work wall enclosure. In some cases, the beam length direction may be set to the vertical direction (such as for a support). Among these, particularly when the beam length direction is used in the horizontal direction, the two beams are sometimes laid together and connected together in order to increase the bending strength (to make it difficult to bend).

JP 2009-208142 A

  When two beams are used side by side, the number of beams required at one site naturally increases. Therefore, of course, the work required for carrying, assembling, and disassembling the beam is doubled. The beam has a size of 450 mm on a side and a length of several meters, and it goes without saying that occupying space increases by arranging two beams, and if the number of beams used increases, the weight of the structure that supports this beam Since the burden also increased, the burden derived from the entire work was greatly increased.

  The present invention has been made in view of the above circumstances, and it is possible to promote an improvement in bending strength while preventing an increase in work amount and burden regarding transportation, assembly, disassembly, etc. An object of the present invention is to provide a high-rigidity beam capable of preventing waste of occupied space.

In order to achieve the above object, the present invention has taken the following measures.
That is, the high-rigidity beam according to the present invention has a three-dimensional beam formed in a rectangular tube shape and a pair of flat beams arranged side by side so as to sandwich two opposite side surfaces of the three-dimensional beam. The three-dimensional beam has four longitudinal tubes provided parallel to each other with respective end portions arranged at four corners of a quadrangle, and a plurality of longitudinal directions between adjacent long tubular materials in the longitudinal direction. A connecting member that is connected vertically to each other, and a diagonal member that connects the long tubular members on both sides of the connecting members in a bracing manner, and the flat beam is formed of two long pieces provided in parallel to each other. A pipe material, a connecting material for connecting a plurality of longitudinal portions between the long tubular materials perpendicularly to the longitudinal direction, and a diagonal material for connecting the long tubular materials on both sides in a bracing manner between the connecting materials. The three-dimensional beam and the flat beam There characterized in that it is used placed either along a horizontal longitudinal direction and these two beams are juxtaposed.

The interval between the three-dimensional beam and the flat beam is set to a distance that does not exceed 1/2 of the standard width dimension set for the three-dimensional beam in the direction in which these beams are provided. It is good to do.
The two long tubes of the flat beam are preferably arranged at the same interval as the mutual interval between the two long tubes arranged on the side of the side of the three-dimensional beam.

In this case, the end of each long tube material in the three-dimensional beam and the end of each long tube material in the flat beam are provided with flange portions projecting in the outer peripheral direction of the end portions, and are connected to the flange portions. A hole is formed, and a spacing member having a length over all the flanges arranged in the direction in which the beams are arranged is in contact with each flange portion of the three-dimensional beam and the flat beam, and the spacing is maintained. The material is formed with through holes that match the connection holes provided in the flange portions of the three-dimensional beam and the flat beam, and the connection holes and the through holes are used to connect or separate bolts in a skewered manner. Can be possible.

  The high-rigidity beam according to the present invention can promote an improvement in bending strength while preventing an increase in work amount and burden regarding transportation, assembly, and disassembly, and also wastes occupied space. It can be prevented.

It is the perspective view which showed the highly rigid beam which concerns on this invention. It is an AA arrow directional view (front view) of FIG. It is a front view of a space | interval holding material. It is the side view which showed the state which connected the highly rigid beam through the space | interval holding material. It is the disassembled perspective view which showed the highly rigid beam which concerns on this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a highly rigid beam 1 according to the present invention. This high-rigidity beam 1 can be suitably used for constructing work scaffolds, work space enclosures, and the like at various sites such as inside and outside buildings or outside structures such as bridges and towers.
The high-rigidity beam 1 includes a rectangular tube-shaped three-dimensional beam 2 and a pair of flat beams 3 arranged so as to sandwich two opposite side surfaces of the three-dimensional beam 2. Further, the three-dimensional beam 2 and the flat beam 3 are configured to keep the coupling interval constant by attaching the interval holding member 4 to the end portions of each other.

The three-dimensional beam 2 is three-dimensionally configured to include four long pipe members 7 and a connecting member 8 and a diagonal member 9 that connect the long pipe members 7. The long tubular material 7 is a round pipe, and the connecting material 8 and the diagonal material 9 are also round pipes that are thinner than the long tubular material 7, compared to the case of using a solid bar or steel shape. The weight of the three-dimensional beam 2 as a whole is reduced.
The long tubular material 7 is provided in parallel to each other with its end portions arranged at four corners of a quadrangle. In the present embodiment, the side length in the vertical direction shown in FIG. 2 and the side length in the horizontal direction shown in FIG. 2 are the same (that is, square). With respect to these long tubular materials 7, the connecting material 8 is provided at a plurality of locations along the longitudinal direction between the adjacent long tubular materials 7 at predetermined intervals. It is connected perpendicular to the direction. Further, the diagonal member 9 is arranged between the connecting member 8 and the connecting member 8 and connects the long tubular members 7 on both sides in a bracing manner (obliquely). The connection of the connecting member 8 and the diagonal member 9 to the long tubular member 7 is performed by welding.

A disc-shaped flange portion 10 is provided at the end portion of the three-dimensional beam 2 so as to protrude from the end portion of each long tubular material 7 in the outer peripheral direction. In addition, a plurality (four in the illustrated example) of connection holes 11 are formed in the flange portion 10 at equal intervals in the circumferential direction.
The flat beam 3 includes two long pipe members 7 and a connecting member 8 and a diagonal member 9 that connect the long pipe members 7 and is formed flat (in a ladder shape). As the long tubular material 7, the connecting material 8, and the diagonal material 9, the same materials as those of the three-dimensional beam 2 can be used.

  The two long pipe members 7 are provided in parallel to each other. The mutual distance between the long tubular members 7 in the flat beam 3 is the mutual distance between the two long tubular members 7 (long tubular members 7 arranged in the vertical direction in FIG. 2) arranged on the side of the side of the three-dimensional beam 2. They are arranged at the same interval. In addition, a flange portion 10 is provided at the end portion of the flat beam 3 (the end portion of both long tube members 7), and a structure in which the connecting member 8 and the diagonal member 9 are provided on the long tube member 7. The structure in which the connection hole 11 is formed in is substantially the same as that of the three-dimensional beam 2.

The spacing member 4 has such a length that it can be brought into contact with all the flange portions 10 arranged in the direction in which the three-dimensional beam 2 and the flat beam 3 are provided side by side. Is formed. The spacing member 4 is formed with through-holes 12 that correspond one-to-one with the connection holes 11 provided in the flange portions 10 of the beams 2 and 3.
Therefore, as shown in FIG. 4, when the high rigidity beams 1 are connected to each other, the gap retaining member 4 is sandwiched between the high rigidity beams 1 and 1 and the flange portions 10 are applied from both sides. The bolt 15 is penetrated from one side so as to be in contact, and the nut 16 is screwed into the bolt end protruding to the opposite side, thereby fastening.

  By connecting using this space | interval holding | maintenance material 4, the solid beam 2 and the flat beam 3 are fixed in the state which left | separated, and a clearance gap is hold | maintained over the longitudinal direction between the attachment. The side-by-side spacing in which the three-dimensional beam 2 and the flat beam 3 are provided side by side with the spacing member 4 is a standard width dimension set for the three-dimensional beam 2 in the side-by-side direction of each beam 2 and 3 (left and right direction in FIG. 2). On the other hand, it is set to a length not exceeding 1/2, more preferably not exceeding 1/3.

  Here, the “standard width dimension set for the three-dimensional beam 2” is a so-called nominal dimension and may be different from the actual side length of the three-dimensional beam 2. For example, when the parallel width (distance between the centers) W between the long tubular material 7 and the long tubular material 7 is 450 mm, the standard width dimension of the three-dimensional beam 2 is referred to as 450 mm (that is, in this case, The actual length of one side of the three-dimensional beam 2 is a dimension obtained by adding the diameter of the long tubular material 7 to 450 mm).

  In this way, the overall width of the high-rigidity beam 1 is reduced by halving the side-by-side distance (center-to-center distance) H between the three-dimensional beam 2 and the flat beam 3 with respect to the standard width dimension of the three-dimensional beam 2. The dimension T (T> W + 2H) does not become larger than when two solid beams 2 are used side by side (over 2 W). Specifically, when the standard width dimension (parallel interval W of the long tubular material 7) is 450 mm, the side-by-side interval H is preferably 140 mm or the like.

The spacing member 4 is used when connecting the necessary number of high-rigidity beams 1 according to the span required at the site, or when connecting the high-rigidity beams 1 to a column or wall material. Or
The high-rigidity beam 1 configured as described above is such that the direction in which the three-dimensional beam 2 and the flat beam 3 are provided side by side (the left-right direction in FIG. 2) and the longitudinal directions of both the beams 2 and 3 are both horizontal. It is good to install and use in the direction that follows.

  In this case, if the three-dimensional beam 2 and the flat beam 3 are observed in the direction in which the three-dimensional beam 2 and the three-dimensional beam 3 are observed, the number (two) of the connecting members 8 that are directed in the vertical direction in the three-dimensional beam 2 and the two flat beams. The total number of the three connecting members 8 (also facing the vertical direction) (two) is four. That is, it can be seen that this is the same as the case where two three-dimensional beams 2 are used side by side.

  In addition, the spacing member 4 connects and integrates adjacent spaces (separated portions) between the solid beam 2 and the flat beam 3. Therefore, when the cross-section secondary moment of the entire high-rigidity beam 1 is considered on the assumption that the solid beam 2 is a neutral axis, at a location (a position of the flat beam 3) far from the neutral axis (the solid beam 2). The cross-sectional area can be concentrated. As described above, the sectional secondary moment of the high-rigidity beam 1 as a whole is obtained by simply adding the sectional moment of the square frame by the three-dimensional beam 2 and the I-shaped sectional moment of the flat beam 3. It can also be said that it is larger and stronger against the bending that is about to occur between both ends in the longitudinal direction.

As a result, the high-rigidity beam 1 has a configuration in which both sides of the three-dimensional beam 2 are sandwiched by the flat beam 3, so that it is equivalent to the case where two three-dimensional beams 2 are used side-by-side (joined), Or it has the bending strength more than it.
After the high-rigidity beam 1 is installed, a strip material (such as a round pipe) 20 is attached to the upper part of the beam and fixed in a tie-up manner with a clamp or the like, and a work floor 21 is further provided on the upper part.

Needless to say, this high-rigidity beam 1 can be disassembled into a three-dimensional beam 2 and a flat beam 3 and carried separately when being carried into and out of a construction site. Since the required number of the three-dimensional beams 2 can be reduced compared to the case where two three-dimensional beams 2 are used side by side (tie together), the amount of work related to transportation is reduced and the work load is reduced. Accordingly, naturally, the transportation cost can be reduced.

The present invention is not limited to the embodiment described above, and can be changed as appropriate according to the embodiment.
For example, in the three-dimensional beam 2, the long tubular material 7 may be arranged at four corner positions of a rectangle. In this case, it is preferable to use the short side as the horizontal direction and the long side as the vertical direction in order to increase the sectional moment of inertia.

In the three-dimensional beam 2, the standard width dimension (parallel interval W of the long tubular material 7), the beam length thereof (including the outer diameter of the long tubular material 7, the connecting material 8, the diagonal material 9) are particularly It is not limited. The same applies to the flat beam 3. The same applies to the distance H between the three-dimensional beam 2 and the flat beam 3.
In the flat beam 3, the two long tubes 7 are not necessarily the same distance as the mutual interval (interval shown in the vertical direction in FIG. 2) between the two long tubes 7 arranged on the side of the side of the three-dimensional beam 2. It is not necessary to arrange in the above, and different interval dimensions can be set. In this case, the spacing member 4 may be formed wide (the vertical direction in FIG. 3 is enlarged), or the spacing member 4 may be bent in a crank shape instead of a straight line.

The flange portion 10 provided on the long tubular material 7 of the three-dimensional beam 2 or the flat beam 3 may be a square shape, and the number of connection holes 11 is not limited.
The solid beam 2 and the flat beam 3 can be joined together by welding, riveting, or the like so that they cannot be separated (that is, integrally formed as the high-rigidity beam 1). Even if it does in this way, compared with the case where two three-dimensional beams 2 are arranged side by side (tie together), it can be said that the increase in size is suppressed and the weight is reduced.

The use of the spacing member 4 for coupling the three-dimensional beam 2 and the flat beam 3 is not necessarily limited. For example, the beams 2 and 3 can also be joined by attaching other strips (round pipes, etc.) so as to extend over (intersect) the solid beam 2 and the flat beam 3 and tie them together with a clamp or the like. Is possible.
The high-rigidity beam 1 according to the present invention can be used as a column or a wall material by installing the longitudinal direction in the vertical direction.

DESCRIPTION OF SYMBOLS 1 High rigidity beam 2 Three-dimensional beam 3 Flat beam 4 Spacing material 7 Long pipe material 8 Connection material 9 Diagonal material 10 Flange part 11 Connection hole 12 Through-hole 15 Bolt 16 Nut 20 Strip material 21 Work floor

Claims (4)

A solid beam formed in a rectangular tube shape, and a pair of flat beams arranged side by side so as to sandwich two opposite side surfaces of the solid beam;
The three-dimensional beam is composed of four long tubes provided in parallel with each other at four corners of a quadrangle, and a plurality of longitudinal directions between adjacent long tubes as the longitudinal direction. It has a connecting material that is connected vertically, and an oblique material that connects the long tubular materials on both sides in a bracing manner between these connecting materials,
The flat beam includes two long pipe members provided in parallel to each other, a connecting member for connecting a plurality of longitudinal portions between the two long pipe members in a direction perpendicular to the longitudinal direction, and both of the connecting members on both sides. It is supposed to have diagonal materials that connect the long tubular materials in braces,
A high-rigidity beam characterized in that the solid beam and the flat beam are installed side by side along the horizontal direction in the direction in which the three-dimensional beam and the flat beam are provided side by side.   The interval between the three-dimensional beam and the flat beam is set to a length that does not exceed 1/2 of the standard width dimension set for the three-dimensional beam in the direction in which these beams are provided. The high-rigidity beam according to claim 1.   The two long tubes of the flat beam are arranged at the same interval as the mutual interval between the two long tubes arranged on the side of the side of the three-dimensional beam. 2. A high-rigidity beam according to 2. At the end of each long tube material in the three-dimensional beam and at the end of each long tube material in the flat beam, a flange portion protruding in the outer peripheral direction of the end portion is provided, and a connection hole is formed in this flange portion. Has been
The flange members of the three-dimensional beam and the flat beam are arranged in contact with a spacing member having a length over all the flange portions arranged in the direction in which each of the beams is provided,
The spacing member is formed with a through hole that matches a connection hole provided in each flange portion of the three-dimensional beam and the flat beam,
4. The high-rigidity beam according to claim 3, wherein the connecting hole and the through hole enable bolt coupling or separation in a skewered manner.

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