JP2022003201A - Closed cross section structural member and building - Google Patents

Abstract

To obtain a closed cross section structural member that is excellent in transportation efficiency and can increase processability, and a building.SOLUTION: Long members 12, 14 constituting a beam member 10 have an L-shaped cross-sectional shape, and a horizontal wall part 18 of the long member 12 and a horizontal wall part 24 of the long member 14 and a vertical wall part 16 of the long member 12 and a vertical wall part 22 of the long member 14 can be respectively stacked in a surface contactable manner. Since the long member 12 and the long member 14 can be transported in a state that the long member 12 and the long member 14 are stacked like this, a dead space may be reduced and can be efficiently transported. The long member 12 and the long member 14 are fixed at an outside of a closed cross sectional part 30 in the beam member 10, and a fixed part is exposed to the outside. Therefore, processing can be easily conducted in fixing the long member 12 and the long member 14.SELECTED DRAWING: Figure 2

Description

The present invention relates to a closed cross-section structural member and a building.

For example, in Patent Document 1 below, a beam (beam member) spanned between opposing girders is formed by engaging two beam members each having a lip groove shape so as to face each other, and the beam member. A technique relating to a beam structure in which both ends and a girder are connected by a gusset plate is disclosed. In this prior art, the gusset plate is plastically deformed to absorb dimensional errors in the axial direction of the beam member, which makes it possible to deal with girders of various plate thicknesses and to deal with machining errors of girders. be.

Japanese Unexamined Patent Publication No. 2008-240334

However, in the above prior art, the two beam members are fixed by tapping screws in a state of being occluded facing each other. That is, in the above prior art, it is necessary to integrate the two beam members by fixing them.

Here, in the case of hole processing in the closed cross-sectional portion formed in the state where the two beam members are occluded, the hole processing is performed in advance in the two members, but when the two members are combined, the hole processing is performed. Error is likely to occur in the position. Further, when the beam material is transported from the factory that forms the beam material to the factory that assembles the beam material, the beam material has a lip groove shape, so that the transportation efficiency is poor.

In consideration of the above facts, it is an object of the present invention to obtain a closed cross-section structural member and a building which have good transportation efficiency and can improve workability.

The closed-section structural member according to the first aspect is a product of a long first member including a first right-angled portion formed by orthogonally forming two first side wall portions and the two first side wall portions, respectively. Two stackable second side wall portions are formed orthogonally and include a second right-angled portion that can face the first right-angled portion, and the first right-angled portion and the second right-angled portion are arranged so as to face each other. In this state, at least one of the long second member forming a closed cross section with the first member and the first side wall portion and the second side wall portion is outside the closed cross section. It is configured to include a fixing portion to which the first member and the second member are fixed on the outside of the closed cross-sectional portion.

The closed-section structural member according to the first aspect includes a first member, a second member, and a fixing portion for fixing the first member and the second member. The first member and the second member have an elongated shape, and the first member includes a first right-angled portion formed by two first side wall portions orthogonal to each other. On the other hand, in the second member, two first side wall portions and two stackable second side wall portions are formed orthogonally to each other, and include a second right-angled portion that can face the first right-angled portion. Has been done. Then, a closed cross-sectional portion is formed by the first member and the second member in a state where the first right-angled portion and the second right-angled portion are arranged so as to face each other. Then, in the fixing portion, at least one of the first side wall portion and the second side wall portion projects to the outside of the closed cross-section portion, and the first member and the second member are fixed outside the closed cross-section portion.

As described above, in this embodiment, the two first side wall portions forming a part of the first member and the two second side wall portions forming a part of the second member can be stacked. Thereby, in this embodiment, it is possible to suppress the formation of a dead space generated between the first member and the second member.

Then, by transporting the first member and the second member in a state where the first side wall portion of the first member and the second side wall portion of the second member are stacked, for example, the first member and the second member Compared with the case where a plurality of closed cross-section structural members are transported with a closed cross-section portion formed between them, in this embodiment, the dead space is reduced and efficient transportation becomes possible.

Further, in this embodiment, in the fixing portion, at least one of the first side wall portion of the first member and the second side wall portion of the second member projects to the outside of the closed cross-section portion, and the first member is outside the closed cross-section portion. And the second member are fixed.

For example, as a comparative example, when channel steels are combined to form a closed cross-section portion and fastening and fixing are performed in the closed cross-section portion, the inner member is covered by the outer member, so that the inner member It is difficult to confirm the position of hole processing.

On the other hand, in this embodiment, since the first member and the second member are fixed on the outside of the closed cross-section portion, the fixed portion is exposed to the outside. Therefore, it is easy to process when fixing the first member and the second member.

The closed-section structural member according to the second aspect is the closed-section structural member according to the first aspect, in which the first member and the second member are cut along a direction orthogonal to the longitudinal direction. The shape is L-shaped.

In the closed cross-sectional structure member according to the second aspect, the cross-sectional shapes of the first member and the second member are L-shaped. In this embodiment, the first right-angled portion formed by orthogonally forming the two first side wall portions constituting the first member and the second right-angled portion formed by orthogonally forming the two second side wall portions constituting the second member. A closed cross-sectional portion is formed between the first member and the second member in a state where the right-angled portions are arranged so as to face each other.

At this time, the tip of the first side wall portion of one of the two first side wall portions is arranged so as to project from the second side wall portion of one of the two second side wall portions, and the second side wall portion is arranged. The tip of the other second side wall portion of the two second side wall portions is arranged so as to project from the other first side wall portion of the two first side wall portions.

As a result, the tip of the first side wall of one of the first members and the tip of the second side wall of the other of the second members are the closed cross-sectional portions formed between the first member and the second member. It will overhang to the outside. In this state, for example, by welding or the like, the first side wall portion of one of the first members and the second side wall portion of one of the second members are joined (fixed) to the other first side wall portion of the first member. The other second side wall portion of the second member is joined (fixed).

The closed-section structural member according to the third aspect is the closed-section structural member according to the first aspect, in which the first member and the second member are cut along a direction orthogonal to the longitudinal direction. The shape is Z-shaped.

In the closed cross-sectional structure member according to the third aspect, the cross-sectional shapes of the first member and the second member are Z-shaped. That is, in this embodiment, in the first member, a first flange portion is formed so as to project from the tip of one of the first side wall portions of the two first side wall portions toward the opposite side of the other first side wall portion. At the same time, in the second member, a second flange portion is formed from the tip of the second side wall portion of one of the two second side wall portions so as to project toward the side opposite to the other second side wall portion. ..

Then, in this embodiment, the first right-angled portion formed by orthogonally forming the two first side wall portions constituting the first member and the two second side wall portions constituting the second member are formed orthogonally to each other. A closed cross-sectional portion is formed between the first member and the second member in a state where the second right-angled portion is arranged so as to face each other.

At this time, the first flange portion of the first member overlaps with the tip end portion of the other second side wall portion of the two second side wall portions of the second member, and the second flange portion of the second member is the first member. It overlaps with the tip of the other first side wall portion of the two first side wall portions.

As a result, the tip of the first flange of the first member and the other second side wall of the second member, the second flange of the second member, and the tip of the other first side wall of the first member are removed. It will project to the outside of the closed cross-sectional portion formed between the first member and the second member. In this state, for example, the first flange portion of the first member and the tip end portion of the other second side wall portion of the second member are fastened (fixed) by a bolt or the like, and the second flange portion of the second member and the second The tip of the other first side wall of one member is fastened (fixed).

In the closed cross-section structural member according to the second aspect, the first member is formed larger than the second member in the closed cross-section structural member according to the fourth aspect.

In the closed cross-sectional structure member according to the fourth aspect, the cross-sectional shapes of the first member and the second member are L-shaped, and the first member is formed larger than the second member. Therefore, the second member can be stacked on the first member. As a result, the packaging can be made compact.

Further, in this embodiment, the first right-angled portion formed by orthogonally forming the two first side wall portions constituting the first member and the two second side wall portions constituting the second member are formed orthogonally to each other. A closed cross-sectional portion is formed between the first member and the second member in a state where the second right-angled portion is arranged so as to face each other.

At this time, the first side wall portion of one of the two first side wall portions of the first member is arranged so as to project from the second side wall portion of one of the two second side wall portions of the second member. At the same time, the other first side wall portion of the two first side wall portions of the first member is arranged so as to project from the other second side wall portion of the two second side wall portions of the second member. To.

As a result, one side wall portion and the other first side wall portion project to the outside of the closed cross-sectional portion formed between the first member and the second member. In this state, for example, by welding or the like, the first side wall portion of one of the first members and the second side wall portion of one of the second members are joined (fixed) to the other second side wall portion of the first member. The other second side wall portion of the second member is joined (fixed).

In the building according to the fifth aspect, the closed cross-section structural member according to any one of the first to fourth aspects is applied as a beam member, and the beam members face each other via the bracket. It is fixed to a pair of arranged girders.

In the building according to the fifth aspect, by forming the closed cross-section portion by the first member and the second member, the closed cross-section structural member can obtain sufficient rigidity as a beam member. Then, the beam members are fixed to a pair of girders arranged so as to face each other via the bracket.

In this embodiment, the first member and the second member can be transported in a state where the second side wall portion of the second member constituting the beam member and the first side wall portion of the first member are stacked. Therefore, as compared with the case where a plurality of beam members are transported with a closed cross-sectional portion formed between the first member and the second member, the dead space is reduced and efficient transportation becomes possible. ..

Further, in this embodiment, since the first member and the second member are fixed on the outside of the closed cross-section portion, the fixed portion is exposed to the outside. Therefore, it is easy to process when fixing the first member and the second member. Then, the beam member thus formed can be fixed to the pair of girders via the bracket.

The building according to the sixth aspect is the building according to the fifth aspect, in which the beam member is applied to the back of the cabin and is arranged so as to be at the same height as the ceiling beam between a pair of ceiling beams facing each other. Has been done.

In the building according to the sixth aspect, the beam member is applied to the back of the cabin, and is arranged between the pair of ceiling beams so as to be at the same height as the ceiling beams.

For example, when the beam member is arranged on the upper side of the ceiling girder, the beam member is projected on the floor behind the cabin. In other words, the space behind the cabin becomes smaller by that amount. On the other hand, in this embodiment, when the beam members are arranged so as to be at the same height as the pair of ceiling beams facing each other, the beam members do not project on the floor of the back of the cabin. Therefore, in this embodiment, it is possible to suppress the unevenness of the floor surface of the back of the cabin and secure a sufficient space in the space behind the cabin.

As described above, the closed cross-section structural member of the first aspect has an effect that the transport efficiency is good and the workability can be improved.

The closed cross-section structural member of the second aspect has a simple shape of the first member and the second member, and in a state where the first member and the second member are stacked, there is little dead space and the transportation efficiency is good. It has the effect of.

The closed cross-section structural member of the third aspect has the effect that since the first member and the second member can be fastened and fixed, welding equipment is not required and the fixing work can be performed on site. Have.

The closed cross-section structural member of the fourth aspect has the effect that the packaging can be made more compact and the dead space can be further reduced in a state where the first member and the second member are stacked. Have.

The building of the fifth aspect has an effect that the transportation efficiency is good and the workability can be improved at the time of construction.

The building of the sixth aspect has the effect that it can be formed flat on the floor surface of the back of the cabin.

(A) is a perspective view showing a plurality of long members to which the first member and the second member are applied, respectively, which constitutes a beam member to which the closed cross-sectional structure member according to the first embodiment is applied. B) is a perspective view showing a state in which the plurality of long members are stacked. It is a perspective view which shows the beam member to which the closed cross-section structural member which concerns on 1st Embodiment is applied. It is a perspective view which shows the fixing method (1) to the building side of the beam member to which the closed cross-section structural member which concerns on 1st Embodiment is applied. It is a perspective view which shows the fixing method (2) to the building side of the beam member to which the closed cross-section structural member which concerns on 1st Embodiment is applied. It is a perspective view which shows the fixing method (3) to the building side of the beam member to which the closed cross-section structural member which concerns on 1st Embodiment is applied. It is sectional drawing which shows the fixing method (4) to the building side of the beam member to which the closed cross-sectional structure member which concerns on 1st Embodiment is applied. (A) is a perspective view showing a state in which a beam member to which a closed cross-sectional structure member according to the first embodiment is applied is applied to the back of a cabin, and (B) is a perspective view showing a state in which a floor material is laid on the back of the cabin. It is a perspective view which shows the state. (A) is a perspective view showing a plurality of long members to which the first member and the second member are applied, respectively, which constitutes a beam member to which the closed cross-sectional structure member according to the second embodiment is applied. B) is a perspective view showing a state in which the plurality of long members are stacked. It is a perspective view which shows the beam member to which the closed cross-section structural member which concerns on 2nd Embodiment is applied. (A), which constitutes a beam member to which the closed cross-section structural member according to the third embodiment is applied, shows a state in which a plurality of long members to which the first member and the second member are applied are stacked. It is an end view, and (B) is an end view which shows the beam member formed by the plurality of long members. (A) to (C) are end views which show the closed cross-section structural member as a comparative example. (A) and (B) are comparative examples, and are perspective views corresponding to FIGS. 7 (A) and 7 (B), respectively.

Hereinafter, the closed cross-section structural member according to the embodiment of the present invention will be described with reference to the drawings.
<First Embodiment>

(Structure of closed cross-section structural member)
First, the configuration of the closed cross-section structural member according to the first embodiment of the present invention will be described.

FIG. 1A shows a perspective view of a long member (first member) 12 and a long member (second member) 14 constituting a beam member 10 as a closed cross-sectional structural member according to the present embodiment. 1 (B) shows a perspective view showing a state in which the long member 14 is stacked on the long member 12.

As shown in FIGS. 1A and 1B, in the present embodiment, the long member 12 and the long member 14 are the same, but for convenience of explanation, they will be described separately. The long member 12 and the long member 14 are made of steel plates, and the cross-sectional shapes cut along the directions orthogonal to the longitudinal direction are L-shaped, respectively. The long member 12 and the long member 14 can be stacked in a state where they can be in surface contact with each other.

As shown in FIG. 1A, in the present embodiment, the long member 12 is formed such that the vertical wall portion (first side wall portion) 16 and the horizontal wall portion (first side wall portion) 18 are formed substantially at right angles to each other. It is configured to include a right-angled portion (first right-angled portion) 20. Then, assuming that the intersection P where the vertical wall portion 16 and the horizontal wall portion 18 intersect is the starting point, the vertical wall portion 16 is formed longer than the horizontal wall portion 18.

As described above, in the present embodiment, since the long member 12 and the long member 14 are the same, the long member 14 also has a vertical wall portion (second side wall portion) like the long member 12. ) 22 and the side wall portion (second side wall portion) 24 are configured to include a right-angled portion (second right-angled portion) 26 formed substantially orthogonally. Then, assuming that the intersection Q where the vertical wall portion 22 and the horizontal wall portion 24 intersect is the starting point, the vertical wall portion 22 is formed longer than the horizontal wall portion 24.

Here, FIG. 2 shows a perspective view of the beam member 10. As shown in FIG. 2, in the beam member 10, the long member 12 and the long member 14 are arranged in a state where the right-angled portion 20 of the long member 12 and the right-angled portion 26 of the long member 14 face each other. A closed cross-section portion 30 is formed between the two.

The beam member 10 is in a state where the vertical wall portion (one second side wall portion) 22 of the long member 14 is in contact with the side wall portion (one first side wall portion) 18 of the long member 12. The tip portion 18A of the portion 18 is arranged so as to project from the vertical wall portion 22 of the long member 14. Further, in a state where the vertical wall portion (the other first side wall portion) 16 of the long member 12 is in contact with the lateral wall portion (the other second side wall portion) 24 of the long member 14, the tip of the horizontal wall portion 24 is in contact with the horizontal wall portion (the other second side wall portion) 24. The portion 24A is arranged so as to project from the vertical wall portion 16 of the long member 12.

That is, in the beam member 10, the tip portion 18A of the side wall portion 18 of the long member 12 and the tip portion 24A of the side wall portion 24 of the long member 14 are formed between the long member 12 and the long member 14. It overhangs the outside of the closed cross-section portion 30.

In this state, for example, by welding or the like, the vertical wall portion 16 of the long member 14 is joined (fixed) to the horizontal wall portion 18 of the long member 12 on the outside of the closed cross-section portion 30 (joint portion 32). .. Further, the vertical wall portion 16 of the long member 12 is joined (fixed) to the horizontal wall portion 18 of the long member 14. As described above, in the present embodiment, the beam member 10 is formed.

(building)
Next, in the beam member 10 according to the present embodiment, a method of fixing to the building 34 side will be described.

For example, as a method (1) for fixing the beam member 10 to the building 34 side, a perspective view thereof is shown in FIG. As shown in FIG. 3, when the beam member 10 is fixed to the channel steel girder 36 provided on the building 34 side, a bracket 38 made of a steel plate is used. That is, in the present embodiment, the beam member 10 is fixed to the girder 36 via the bracket 38.

In the present embodiment, the bracket 38 is a plate material having a substantially T-shape when viewed from the front, and the girder 36 is fixed to the head 38A of the bracket 38, and the beam member 10 is fixed to the neck 38B of the bracket 38. To.

Specifically, although not shown, the head 38A of the bracket 38 is welded to the inner surface side of the upper flange portion 36A and the lower flange portion 36B of the girder 36, and the bolt 42 is attached to the neck portion 38B of the bracket 38. Is provided. On the other hand, at the end portion 10A in the longitudinal direction of the beam member 10, a fixing hole (not shown) through which the bolt 42 can be inserted is provided in the vertical wall portion 22 of the long member 14 constituting a part of the beam member 10. It is formed. Further, the vertical wall portion 22 of the long member 14 is provided with a nut (not shown) corresponding to the fixing hole.

With the above configuration, the beam member 10 is fastened to the bracket 38 via the bolt 42 and the nut. As described above, in the present embodiment, the beam member 10 is fixed to the girder 36 via the bracket 38.

Here, the bracket 38 is welded to the girder 36, and the beam member 10 is fastened to the bracket 38 via bolts 42 and nuts, but the fixing method is not limited to this.

For example, as a method (2) for fixing the beam member 10 to the building 34 side, a perspective view thereof is shown in FIG. As shown in FIG. 4, in the present embodiment, a plate-shaped bracket 44 having an inverted L-shape in a side view may be used. In the present embodiment, the beam member 10 is fixed to one side 44A of the bracket 44, and the upper flange portion 36A of the girder 36 is fixed to the other side 44B of the bracket 44.

Specifically, the beam member 10 is welded to the bracket 44 in a state where the end surface 10B in the longitudinal direction of the beam member 10 is in contact with one side 44A of the bracket 44. Further, a bolt 46 is provided on the other side 44B of the bracket 44. On the other hand, a fixing hole (not shown) is formed in the upper flange portion 36A of the girder 36. Further, the upper flange portion 36A of the girder 36 is provided with a nut (not shown) corresponding to the fixing hole.

With the above configuration, the bracket 44 is fastened to the girder 36 via the bolt 46 and the nut. As described above, in the present embodiment, the beam member 10 is fixed to the girder 36 via the bracket 44.

Further, in the above embodiment, the girder 36 and the beam member 10 are fixed to one bracket 38 (see FIG. 3) and the bracket 44 (see FIG. 4), respectively, but the present invention is limited to this. It's not a thing.

For example, as a method (3) for fixing the beam member 10 to the building 34 side, a perspective view thereof is shown in FIG. As shown in FIG. 5, the girder 36 is fixed to the bracket 48, and the beam member 10 is fixed to the bracket 50. Then, by connecting the bracket 48 and the bracket 50, the beam member 10 may be fixed to the girder 36 via the bracket 48 and the bracket 50.

Specifically, the bracket 48 is a plate material having a substantially inverted L shape when viewed from the front, and one side 48A of the bracket 48 is welded to the inner surface side of the upper flange portion 36A and the lower flange portion 36B of the girder 36. .. Further, a bolt 52 is provided on the other side 48B of the bracket 48.

On the other hand, the bracket 50 has a substantially T-shape in a plan view, and the beam member 10 is in contact with the head portion 50A of the bracket 50 in a state where the end portion 10A in the longitudinal direction of the beam member 10 is in contact with the bracket 50. It is welded to 50. A fixing hole (not shown) is formed in the neck portion 50B of the bracket 50. Further, the neck portion 50B of the bracket 50 is provided with a nut (not shown) corresponding to the fixing hole.

With the above configuration, the bracket 48 and the bracket 50 are fastened via the bolt 52 and the nut. As described above, in the present embodiment, the beam member 10 is fixed to the girder 36 via the brackets 48 and 50.

In addition to the above, FIG. 6 shows a cross-sectional view of the beam member 10 as a method (4) for fixing the beam member 10 to the building 34 side. As shown in FIG. 6, in the bracket 56 fixed to the girder 36, not only the beam member 10 but also other girders 54 are formed so as to be able to be used as brackets for fixing to the girder 36. May be good. In this case, the bracket 56 is provided with a joint portion 58 for welding the beam 54.

(Action and effect of closed cross-section structural member)
Next, the operation and effect of the closed cross-section structural member according to the first embodiment of the present invention will be described.

In the present embodiment, as shown in FIG. 1A, the long members 12 and 14 constituting the beam member 10 each have an L-shaped cross section. Then, in the present embodiment, as shown in FIG. 1 (B), the horizontal wall portion 18 of the long member 12, the horizontal wall portion 24 of the long member 14, the vertical wall portion 16 of the long member 12, and the long member 14 The vertical wall portions 22 of the above can be stacked with each other in a state where they can be in contact with each other.

For example, as a comparative example, FIGS. 11A to 11C show end views showing beam members 204 and 210. As shown in FIG. 11A, in the case of the beam member 204 formed by combining the lip channel steels 200 and 202, if the beam member 204 is to be transported as it is, the lip channel steel 200 and the lip channel steel The closed cross-sectional portion 206 formed by 202 becomes a dead space, and the transportation efficiency deteriorates.

As shown in FIG. 11B, even if the beam member 210 formed by combining the lip channel steel 200 and the plate 208 is formed after transportation, the lip channel steel 200 will be used. Since the space portion 212 formed is also a dead space, the transportation efficiency is poor.

On the other hand, in the present embodiment, as shown in FIG. 1B, the horizontal wall portion 18 of the long member 12, the horizontal wall portion 24 of the long member 14, and the vertical wall portion 16 of the long member 12 are long. The vertical wall portions 22 of the shaku member 14 are stacked in a state of being in surface contact with each other. This makes it possible to suppress the formation of a dead space generated between the long member 12 and the long member 14 in the present embodiment.

Then, by transporting the long member 12 and the long member 14 in a state where the long member 12 and the long member 14 are stacked, the long member 12 and the long member 14 are assembled from the step of bending. When transporting to a process, the members can be stacked on top of each other, so that dead space is reduced and efficient transport is possible.

Further, the cross-sectional shapes of the long member 12 and the long member 14 are L-shaped, respectively, and the shapes of the long member 12 and the long member 14 are simple. Therefore, it is possible to reduce the manufacturing cost as compared with the long member having a complicated shape.

Further, in the present embodiment, as shown in FIG. 2, the right-angled portion 20 of the long member 12 constituting the beam member 10 and the right-angled portion 26 of the long member 14 are arranged so as to face each other. A closed cross-section portion 30 is formed between the long member 12 and the long member 14. As described above, in the present embodiment, the beam member 10 can obtain sufficient rigidity as a beam member by forming the closed cross-sectional portion 30 by the long member 12 and the long member 14.

On the other hand, in the present embodiment, the beam member 10 is arranged so that the tip portion 18A of the lateral wall portion 18 of the long member 12 projects from the vertical wall portion 22 of the long member 14, and the horizontal wall portion 24 of the long member 14 is arranged. The tip portion 24A of the above is arranged so as to project from the vertical wall portion 16 of the long member 12.

That is, in the present embodiment, in the beam member 10, the tip portion 18A of the side wall portion 18 of the long member 12 and the tip portion 24A of the side wall portion 24 of the long member 14 are the long member 12 and the long member 14. It overhangs the outside of the closed cross-sectional portion 30 formed between them. Then, on the outside of the closed cross-section portion 30, the vertical wall portion 16 of the long member 14 is fixed to the horizontal wall portion 18 of the long member 12, and the vertical wall portion 16 of the long member 12 is the long member 14. It is fixed to the side wall portion 18.

For example, as a comparative example, as shown in FIG. 11C, in a beam member 204 formed by combining two lip channel steels 200 and 202, the beam member 204 is fastened and fixed in the closed cross-section portion 206 (fixing portion 213). In the fixing portion 213, the lip channel steel 202 arranged inside is covered with the lip channel steel 200 arranged outside.

Therefore, it is difficult to confirm the position of the hole 202A on the inner lip channel steel 202 side. In particular, when the nut is welded to the inner lip channel steel 202 side, the outer lip channel steel 200 and the inner lip channel steel 202 cannot be penetrated at the same time after being combined.

On the other hand, in the present embodiment, as shown in FIG. 2, in the beam member 10, the long member 12 and the long member 14 are fixed on the outside of the closed cross-sectional portion 30 (joint portion 32). The joint portion 32 is exposed to the outside. Therefore, it is easy to process when fixing the long member 12 and the long member 14.

Further, for example, as shown in FIG. 3, when the bracket 38 is fastened to the beam member 10, the bolt 42 is inserted into the vertical wall portion 22 of the long member 14 that constitutes a part of the beam member 10. (Not shown) is formed. As described above, in the present embodiment, even when the hole is machined, only the long member 14 side needs to be machined, so that the positional deviation caused by the stacking of the members does not occur.

By the way, in general, as shown in FIG. 12A, a bundle member 216 is erected on the back of the cabin 214. The bundle member 216 is supported by the bundle receiving beam 218, and the bundle receiving beam 218 is fixed on a pair of ceiling girders 220 arranged so as to face each other.

In recent years, there has been an increasing need to utilize the space in the back of the cabin 214 as a study or a children's room. However, as described above, when the bundle receiving beam 218 is fixed on the ceiling girder 220, as shown in FIG. 12B, the bundle receiving beam 218 is laid on the back of the cabin 214 with the floor material 222. Becomes a protruding portion 224, and a step is formed on the floor portion 226.

On the other hand, in the present embodiment, for example, as shown in FIG. 5, the beam member 10 is fixed to the girder 36 by using the brackets 48 and 50. Therefore, by changing the positions of the bracket 48 and the bracket 50 in the height direction, the upper flange portion 36A of the girder 36 and the side wall portion 24 of the beam member 10 can be brought into a substantially flush state.

Therefore, in the present embodiment, as shown in FIG. 7 (A), by applying the beam member 10 as a bundle receiving beam for supporting the bundle member 72 in the cabin back 70, it is shown in FIG. 7 (B). The floor portion 76 can be made into a flat surface in a state where the floor material 74 is laid on the back of the cabin 70. That is, in the present embodiment, it is possible to suppress the unevenness of the floor surface 74A of the cabin back 70 and secure a sufficient space in the space of the cabin back 70.

<Second Embodiment>
Next, the closed cross-section structural member according to the second embodiment will be described. The description of substantially the same contents as those of the first embodiment will be omitted by using the same reference numerals.

FIG. 8A shows a perspective view of a long member (first member) 82 and a long member (second member) 84 constituting the beam member 80 as the closed cross-sectional structural member according to the present embodiment. 8 (B) shows a perspective view showing a state in which the long member 84 is stacked on the long member 82.

As shown in FIGS. 8A and 8B, the long member 82 and the long member 84 are the same, and the cross-sectional shapes cut along the directions orthogonal to the longitudinal direction are Z, respectively. It has a character shape, and the long member 82 and the long member 84 can be stacked in a state where they can be in surface contact with each other.

As shown in FIG. 8A, the long member 82 is formed so that the vertical wall portion 16 and the horizontal wall portion 18 are formed substantially orthogonal to each other, and the tip of the horizontal wall portion 18 is on the opposite side to the horizontal wall portion 18. A flange portion 86 is formed so as to project toward the surface.

As described above, since the long member 82 and the long member 84 are the same, in the long member 84 as well, the vertical wall portion 22 and the horizontal wall portion 24 are substantially orthogonal to each other. A flange portion 88 is formed from the tip of the lateral wall portion 24 so as to project toward the side opposite to the lateral wall portion 24.

Therefore, in the present embodiment, as shown in FIG. 8B, the horizontal wall portion 18 of the long member 82, the horizontal wall portion 24 of the long member 84, the vertical wall portion 16 of the long member 82, and the long member The vertical wall portion 22 of the 84, the flange portion 86 of the long member 82, and the flange portion 88 of the long member 84 are stacked in a state of being in surface contact with each other. This makes it possible to suppress the formation of a dead space generated between the long member 82 and the long member 84 in the present embodiment.

Here, FIG. 9 shows a perspective view of the beam member 80. As shown in FIG. 9, in the beam member 80, the long member 82 and the long member are arranged so that the right-angled portion 20 of the long member 82 and the right-angled portion 26 of the long member 84 face each other. A closed cross-section portion 30 is formed between 84.

At this time, in the present embodiment, the flange portion 86 of the long member 82 overlaps the tip portion 24A of the lateral wall portion 24 of the long member 84, and the flange portion 88 of the long member 84 is the lateral wall portion 18 of the long member 82. It overlaps with the tip portion 18A of. The flange portion 86 of the long member 82 and the tip portion 24A of the side wall portion 24 of the long member 84, the flange portion 88 of the long member 84, and the tip portion 18A of the side wall portion 18 of the long member 82 are each long. It projects to the outside of the closed cross-sectional portion 30 formed between the member 82 and the long member 84.

In this state, the flange portion 86 of the long member 82 and the tip portion 24A of the side wall portion 24 of the long member 84 are fastened by the bolt 90 and the nut (not shown), and the long member 84 is fastened by the bolt 94 and the nut 96. The flange portion 88 and the tip portion 18A of the side wall portion 18 of the long member 82 are fastened to each other.

As described above, in the present embodiment, since the long member 82 and the long member 84 can be fastened and fixed, welding equipment is not required, and the fixing work can be performed on site.

<Third Embodiment>
Next, the closed cross-section structural member according to the third embodiment will be described. The description of substantially the same contents as those of the first embodiment will be omitted by using the same reference numerals.

FIG. 10A shows the long member 102 in the long member (first member) 102 and the long member (second member) 104 constituting the beam member 100 as the closed cross-section structural member according to the present embodiment. An end view showing a state in which the long member 102 is stacked on the long member 102 and the long member 104 is stacked on the long member 104 is shown. Further, FIG. 10B shows an end view of the beam member 100.

As shown in FIG. 10A, in the present embodiment, the long member 102 forming a part of the beam member 100 is formed larger than the long member 104, and the long member 102 is a vertical wall. The portion (first side wall portion) 106 and the side wall portion (first side wall portion) 108 are configured to include a right-angled portion (first right-angled portion) 110 formed substantially orthogonally. Further, the long member 104 includes a right-angled portion (second right-angled portion) 116 formed by the vertical wall portion (second side wall portion) 112 and the horizontal wall portion (second side wall portion) 114 substantially orthogonal to each other. It is configured.

In the present embodiment, the long members 102 and the long members 104 are stacked in a state of being in surface contact with each other, and the long member 104 can be stacked on the long member 102. .. That is, in the present embodiment, the horizontal wall portion 108 of the long member 102 and the horizontal wall portion 114 of the long member 104, and the vertical wall portion 106 of the long member 102 and the vertical wall portion 112 of the long member 104 are respectively surfaces. It can be stacked in contact with each other.

As described above, in the present embodiment, since the long member 104 is smaller than the long member 102, the long member 104 stacked on the stacked long member 102 can be stacked. Thereby, in the present embodiment, the packing shape of the long members 102 and 104 can be made more compact, and the formation of the dead space generated between the long members 102 and the long members 104 can be further suppressed. It will be possible.

On the other hand, as shown in FIG. 10B, in the beam member 100, the right-angled portion 110 of the long member 102 and the right-angled portion 116 of the long member 104 are arranged so as to face each other. A closed cross-section portion 118 is formed between the and the long member 104.

The beam member 100 has the vertical wall portion 112 of the long member 104 in contact with the horizontal wall portion 108 of the long member 102, and the tip portion 108A of the horizontal wall portion 108 is the vertical wall portion of the long member 104. Overhang from 112. Further, in the state where the beam member 100 is in contact with the vertical wall portion 106 of the long member 102 and the horizontal wall portion 114 of the long member 104, the tip portion 106A of the vertical wall portion 106 is the horizontal wall of the long member 104. Overhang from part 114.

That is, the tip portion 106A of the vertical wall portion 106 of the long member 102 and the tip portion 108A of the horizontal wall portion 108 project to the outside of the closed cross-sectional portion 118 formed between the long member 102 and the long member 104. It will be. In this state, the vertical wall portion 106 of the long member 102 and the horizontal wall portion 114 of the long member 104 are joined by welding or the like, and the horizontal wall portion 108 of the long member 102 and the vertical wall portion 112 of the long member 104 are joined. Is joined.

In the above embodiment, the beam member has been described as an example of the closed cross-section structural member in the present invention, but the beam member is not limited to the beam member as long as it is a member to which the closed cross-section structural member is applied. For example, it may be applied to a bundle material or the like.

Although the present invention has been described above with reference to one example as an embodiment for carrying out the present invention, the present invention is not limited to such one embodiment and is described above within a range not deviating from the gist of the present invention. Various modifications and substitutions can be added to the above-mentioned embodiment.

10 Beam member (closed cross-section structural member)
12 Long member (first member)
14 Long member (second member)
16 Vertical wall part (first side wall part)
18 Side wall part (first side wall part)
20 Right-angled part (first right-angled part)
22 Vertical wall part (second side wall part)
24 Side wall part (second side wall part)
26 Right-angled part (second right-angled part)
30 Closed cross-section 32 Joint (fixed)
34 Building 36 Giraffe (Ceiling Giraffe)
38 Bracket 44 Bracket 48 Bracket 50 Bracket 56 Bracket 70 Back of the cabin 80 Beam member (closed cross-section structural member)
82 Long member (first member)
84 Long member (second member)
90 bolts (fixed part)
94 bolts (fixed part)
96 nut (fixed part)
100 Beam member (closed section structure member)
102 Long member (first member)
104 Long member (second member)
106 Vertical wall part (first side wall part)
108 Side wall part (first side wall part)
110 Right angle part (first right angle part)
112 Vertical wall part (second side wall part)
114 Side wall part (second side wall part)
116 Right angle part (second right angle part)
118 Closed section

Claims (6)

A long first member including a first right-angled portion formed by two first side wall portions orthogonal to each other, and a first member.
The two first side wall portions and two stackable second side wall portions are formed orthogonally to each other and include a second right-angled portion that can face the first right-angled portion, and the first right-angled portion and the said. A long second member forming a closed cross-sectional portion with the first member in a state where the second right-angled portions are arranged so as to face each other.
At least one of the two first side wall portions and the two second side wall portions projects to the outside of the closed cross-section portion, and the first member and the second member are fixed outside the closed cross-section portion. Department and
A closed cross-section structural member configured to include. The closed cross-sectional structure member according to claim 1, wherein the first member and the second member have an L-shaped cross section cut along a direction orthogonal to the longitudinal direction. The closed cross-sectional structure member according to claim 1, wherein the first member and the second member have a Z-shaped cross-sectional shape cut along a direction orthogonal to the longitudinal direction. The closed cross-sectional structure member according to claim 2, wherein the first member is formed larger than the second member. The closed cross-section structural member according to any one of claims 1 to 4 is applied as a beam member, and the beam members are fixed to a pair of girders arranged so as to face each other via a bracket. building. The building according to claim 5, wherein the beam member is applied to the back of a cabin and is arranged so as to have the same height as the ceiling beam between a pair of ceiling beams facing each other.

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