JP2020016123A - Bar member for substrate of building and ceiling substrate structure - Google Patents

Abstract

To provide a bar member for a substrate of a building which is used for a ceiling substrate of a building and the like, and can aim for a weight saving and assure a sufficient strength as well and has excellent workability and economical efficiency and a ceiling substrate structure using the same.SOLUTION: A bar member 2 for a substrate used for a substrate of a building is provided in which a steel plate in thin plate shape and a light weight is bent and formed, has a cross section of U-shape consisting of a substrate part 4, a first rise plate part 6 bent orthogonally from one side of the substrate part and a second rise plate part 8 bent orthogonally from the other side thereof and is configured that on the first and second rise parts 6 and 8 an end of the steel plate is bent inward to fold back respectively to form fold back plate parts 10 and 12 in which the steel plates overlap in two layers each other.SELECTED DRAWING: Figure 1

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar material for a building base used for a building base or the like and a ceiling base structure using the same.

  2. Description of the Related Art Conventionally, on a building ceiling, as a base of the ceiling, there is known a field support attached to a hanger or the like, and a structure in which a field edge is attached to the field support. Is configured.

  For example, the field edge receiver and its holding member described in Patent Document 1 include a field edge holding member 64 having a horizontal piece 60, a rising piece 61, a pressing piece 62, and the like, as shown in FIG. A ridge receiver 72 having upper and lower horizontal plates 68, 68 formed in a U-shaped cross section and having a bent piece 70 on the distal end side of the horizontal plate 68 is fitted into the ridge receiver holder 65. Then, the upper surface of the ridge receiver 72 is pressed and fixed by the pressing piece 62. Since the ridge receiver 72 has the bent piece 70, the height of the side plate is sufficiently reduced. It is possible to obtain a field support 72 having a high strength and to construct a ceiling with a narrow ceiling.

  In addition, Patent Document 2 describes a field edge receiver formed in a groove shape by a web and upper and lower flanges and supporting a field edge via a clip, for screwing a clip to the web. By forming a pilot hole position confirmation mark on the lower hole or the web, the work of installing the ceiling base material can be easily performed.

  The field edge receiver described in Patent Literature 3 has a main body portion formed in an elongated rectangular flat plate shape, and a first portion formed in a flat plate shape and protruding from a part of an edge on one side in the width direction of the main body portion. , And a second projection protruding from the tip of the first projection, the seismic resistance is improved as compared with the related art, and a third projection or the like orthogonal to the main body is provided. Accordingly, the second moment of area is increased, and the bending rigidity and the torsional rigidity of the edge receiving member are increased.

JP-A-8-93123 JP 2015-94068 A JP 2013-32644 A

Now, the field margin receiver described in Patent Document 1 is provided with a bent piece 70 to secure the strength, but in this case, the weight of the bent piece portion is added, and the weight of the field margin receiver is reduced. It is difficult to do so, and the field edge receiver described in Patent Literature 2 is formed in a groove shape by the web and the upper and lower flanges. In general, in the case of this shape, the thickness of the field edge receiver is increased. Therefore, there is a problem that it is contrary to weight reduction in order to secure rigidity.
The field edge receiver described in Patent Literature 3 is said to have higher bending rigidity due to the third projecting portion and the like. However, a part of the field edge receiver is cut, for example, by providing a cutout in the third projecting portion. Due to the lacking shape, there is a problem that this portion lacks strength.

  The present invention has been made in order to solve the above-mentioned problems, and a bar material for a base of a building and a ceiling using the bar material, which can be reduced in weight and ensure sufficient strength, are excellent in workability and economic efficiency. It is intended to provide an underlayer structure.

  In order to solve the above technical problem, as shown in FIG. 1 and the like, the present invention is a base bar material 2 used as a base material of a building. The first upright plate portion 6 bent at a right angle from one side and the second upright plate portion 8 bent at a right angle from the other side have a U-shaped cross section. In this configuration, the end portions of the steel plates are bent inwardly and folded on the rising plate portions 6 and 8 to form folded plate portions 10 and 12 in which the steel plates overlap doubly.

  In the base bar material 2 for a building according to the present invention, the ratio of the folded width of the folded plate portions 10 and 12 to the rising width of the first and second rising plate portions 6 and 8 is 30% to 30%. The configuration is 50%, preferably 50% to 65%, more preferably 65% to 85%.

  The grounding bar member 22 of the building according to the present invention further extends the folded plate portion to a part of the substrate portion to form second folded plate portions 24 and 26 in which the steel plates overlap doubly. Configuration.

  The base bar material 2 for a building according to the present invention has a thickness of the thin lightweight steel plate of 0.2 mm or more and 1.2 mm or less, preferably 0.3 mm or more and 0.8 mm or less, more preferably 0.4 mm or more and 0.1 mm or less. The configuration is 6 mm or less.

  The base bar material 2 for a building according to the present invention has a configuration in which a plurality of V-shaped groove line portions formed in the longitudinal direction or honeycomb-shaped uneven portions are provided in the substrate portion 4.

  Further, the bar material 2 for a foundation of a building according to the present invention is configured so that the first and second rising plate portions 6 and 8 are oriented horizontally and the substrate portion 4 is oriented vertically.

  The base bar material 2 for a building according to the present invention has a configuration in which the base bar material 2 is used as a base material for supporting a field material as a ceiling base material.

  The present invention is a ceiling base structure using the base bar material for a building according to any of the above, wherein the base bar material 2 and the first rising plate portion 6 are attached to a hanging member from the ceiling. The substrate portion 4 is vertically supported on the upper side, and a field edge material 32 is disposed below the base bar material 2 in a direction perpendicular to the base bar material 2. A clip 30 is used, and the field edge material 32 is attached to the clip 30. Is placed and the base bar 2 is held, and the clip is formed integrally with the side plates 36, 36 in a direction orthogonal to the base bar 2 and the front ends 41, 41 of the side plates. Then, a receiving plate portion 38 formed of a plane parallel to the substrate portion 4 of the base bar material 2 is formed, and the front end portions 41, 41 of the side plate portions and the receiving plate portions 38, 38 are provided with the base bar material 2. And at the same time, the locking portions 40, 4 on the upper part of the clip 30. Was engaged with the first rising plate part 6 of the base bar member 2, by the side plate portions 36 and the receiving plate portion 38 is configured to hold the substrate portion 4 of the base bar member 2.

  In the ceiling basement structure according to the present invention, the clip 30 includes a flat mounting portion 35 on which the edge material 32 is mounted, and the side plate portions rising at right angles from right and left ends of the mounting portion 35, respectively. 36, 36 and the front end portions 41, 41 of the side plate portion 36 (39) formed by bending the upper part of a part of the side plate portion cut off at a right angle, and integrally formed with the front end portions 41, 41; The side plate portion 36 includes the receiving plate portions 38, 38 forming a plane parallel to the substrate portion 4 of the bar member 2, and the locking portions 40, 40 extending above the receiving plate portion. , 36, the base 4 of the base bar 2 is applied to the front ends 41, 41 and the receiving plate 38, 38, and at the same time, the locking portions 40, 40 of the clip 30 are attached to the base bar 2. Of the side plate 36 and the receiving plate. By the plate portion 38 is configured to hold the substrate portion 4 of the base bar member 2.

  According to the bar material for a foundation of a building according to the present invention, a thin and lightweight steel plate is bent and formed, a substrate portion, a first rising plate portion bent at a right angle from one side, and bent at a right angle from the other side. The second rising plate portion has a U-shaped cross section, and the first and second rising plate portions each have an end portion of the steel plate bent inward and turned back, and the steel plates are double-folded. Since the plate portion is formed, the base bar material can be reduced in weight, sufficient strength can be ensured, and safety and economy can be improved.

  According to the bar material for a foundation of a building according to the present invention, the ratio of the folded width to the rising width is in the range of 30% to 50%, preferably 50% to 65%, and more preferably 65% to 85%. Therefore, there is an effect that a form can be selected according to the degree of weight reduction, strength, and the like, and can be used for versatile applications.

  According to the bar material for a foundation of a building according to the present invention, since the folded plate portion is further extended to a part of the substrate portion and the second folded plate portion in which the steel plates overlap doubly is formed, the strength against bending and the like is obtained. Has the effect of increasing further.

  According to the bar material for foundation of a building according to the present invention, the groove portion or the honeycomb-shaped uneven portion is provided on the substrate portion, so that the bar material for substrate has cushioning properties or has a restoring force. For example, there is an effect that a material having desired characteristics can be obtained.

  According to the bar material for the foundation of the building according to the present invention, the first and second rising plate portions are oriented horizontally, the substrate portion is used vertically, and also as a field edge receiving material for supporting the field edge material. Since the configuration is used, there is an effect that the strength against bending and the like is secured.

  According to the ceiling base structure according to the present invention, the base portion of the base bar material is applied to the front end portion and the receiving plate portion of the side plate portion, and at the same time, the locking portion at the upper portion of the clip is first raised plate of the base bar material. And the side plate portion and the receiving plate portion hold the substrate portion of the base bar material, so that the weight of the base bar material can be reduced and the side plate portion of the clip has the base bar material substrate. Since the side plate portion is formed in a direction orthogonal to the portion, the side plate portion has a rib-like function with respect to the substrate portion of the base bar material, and there is an effect that the thin plate-like substrate portion is effectively reinforced and the strength is increased. .

It is a perspective view of the bar material for the foundation of the building concerning an embodiment. It is a figure which shows the cross section of the bar | burr for base materials of the building which concerns on embodiment, (a) has a folded board part, (b) has a 2nd folded board part further. It is a figure which shows the pattern (concavo-convex shape) of the board | substrate part of various base bar materials, (a) is a flat (non-pattern) thing, (b) is a plurality (here seven) of V-shaped cross section. A groove line portion is provided, and (c) a honeycomb-shaped uneven portion is provided. It is a figure which shows the cross section of each material regarding the base bar material of various materials, (a) is material 1, (b) is material 2, (c) is material 3, (d) is material 4, (e). ) Indicates material 5, and (f) indicates material 6. FIG. 3 is a diagram showing a ceiling base structure using a base bar material of a building according to the embodiment. It is a figure which shows the clip used for the ceiling base structure concerning embodiment. FIG. 2 is a diagram illustrating a side surface of a ceiling base structure according to the embodiment. It is a figure showing a field support concerning a conventional example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a bar material for a base of a building according to an embodiment.
The base bar material 2 for the building can be used as a base bar material 2 for a ceiling, for example, as a field support material for supporting a field material.

  The base bar material 2 is obtained by bending a thin lightweight steel plate by press working or roll homing. The base bar material 2 includes a substrate portion 4, a first rising plate portion 6 bent at a right angle from one side, and a second rising plate portion 8 bent at a right angle (in the same direction) from the other side. It has a U-shaped cross section.

  Further, in the base bar material 2, the first rising plate portion 6 and the second rising plate portion 8 are bent inwardly from the respective distal end portions, and the folded plate portions 10, in which the steel plates overlap doubly, respectively. 12 are formed. The folded plate portions 10 and 12 have a shape in which a thin lightweight steel plate is folded inward, and the steel plates are closely adhered or substantially adhered to each other and double overlapped.

As shown in FIG. 2A, the base bar 2 has a base width (L) of the substrate portion 4 and a rising width (M) of the first rising plate portion 6 and the second rising plate portion 8. Have. Then, the dimension of the folded width (N) of the folded plate portions 10 and 12 is ensured to some extent with respect to each rising width (M) dimension.
Here, the degree of the folded ratio (N / M × 100) of the folded width (N) with respect to the rising width (M) is in the range of 30% or more and less than 50%, preferably 50% or more and 65% or less. %, More preferably 65% or more and 85% or less. If the folding ratio is less than 30%, the strength cannot be sufficiently secured.

Within the above-mentioned range of the turnover ratio, the weight reduction and strength of the base bar material 2 can be properly performed. That is, the weight can be further reduced by lowering the ratio, and higher strength can be obtained by increasing the ratio.
Here, for example, the rising width (M) of the base bar material 2 is 12 mm, and the folded width (N) is 10 mm. In this case, the folded ratio is about 83% (10/12 × 100). Further, in order to further reduce the weight, for example, if the rising width (M) of the base bar material 2 is 12 mm and the turn width (N) is 8 mm, the turn ratio is about 67% (8/12 × 100). ).

Since the thin lightweight steel sheet is required to be thin and have an appropriate strength, its thickness is 0.2 mm or more and 1.2 mm or less, preferably 0.3 mm or more and 0.8 mm or less, more preferably 0.4 mm or less. At least 0.6 mm.
When the thickness exceeds 1.2 mm, the weight of the steel plate increases, and when the thickness is less than 0.2 mm, sufficient strength cannot be obtained.

The base bar material 2 has a base width (L) of the substrate portion 4 and respective dimensions of the rising width (M) of the first rising plate portion 6 and the second rising plate portion 8. The base width (L) is 38 mm, and the rising width (M) is 12 mm.
Regarding the above dimensions, the base width (L) is set to 20 mm or more and 50 mm or less, preferably 30 mm or more and 45 mm or less, more preferably 35 mm or more and 40 mm or less in consideration of the balance between weight reduction and strength of the base bar material 2. . The rising width (M) is set to 10 mm or more and 15 mm or less, preferably 10 mm or more and 14 mm or less, and more preferably 12 mm.

FIG. 2B shows a second base bar material 22 having another shape.
The second base bar member 22 extends the folded plate portion, bends each corner between the first and second rising plate portions and the substrate portion 4 at a right angle, and further forms a part of the substrate portion 4. This is a shape having second folded plate portions 24 and 26 folded back in a double overlapping state. In the second folded plate portions 24 and 26, the range of the portion overlapping the substrate portion 4 is set to about several mm (for example, 2 to 5 mm).

  The base bar members 2 and 22 may be used in various forms. For example, the substrate portion 4 such as the base bar member 2 is erected vertically, and the first rising plate portion 6 and the second rising plate portion 8 are formed. Can be used horizontally, and the opening 14 having a U-shaped cross section can be used sideways. In this case, the tension and the compressive force on the first rising plate 6 and the second rising plate 8 are further increased by the folded plates 10 and 12.

  Specifically, the base bar material 2 or the like is replaced with a conventional C-shaped bar material such as a lightweight ceiling base material (vibration-resistant ceiling or the like), a lightweight wall base material, a ceiling wiring duct, etc. Can be used as a replacement. In addition, since the strength of the base bar material 2 and the like is excellent, the anti-sway material used to be stretched between studs as a wall base material, and a ceiling base material and a field support material as a ceiling base material. It can also be used effectively as an anti-sway material for a brace or the like that is used by being bridged diagonally. Further, since a thin lightweight steel plate is used, since the steel plate is thin, it can be easily fixed by screws or the like, and it can be expected that the use of the steel plate can be expanded.

FIG. 3 shows a pattern (unevenness) provided on the substrate portion 4 such as the base bar 2. FIG. 3A shows a flat (flat) shape, and FIG. 3B shows a case where a plurality of groove line portions having a V-shaped cross section are provided in the longitudinal direction of the substrate portion 4. One groove portion and three groove portions provided in upper and lower portions are shown.
FIG. 3C shows a honeycomb-shaped uneven portion formed by embossing, in which a regular hexagonal pattern is formed in a concave shape, and the interval between the regular hexagons is equal to the length of one side of the regular hexagon. The range is 25% to 80%.
In addition, each plate surface of the first rising plate portion 6 and the second rising plate portion 8 of the base bar material 2 is flat (flat).

Here, a strength test was performed on the base bar material 2 and the like by an in-house test, and the results will be described. This strength test is a strength test of a ceiling base material based on JIS A 6517, and is a test in accordance with a downward loading test of a field margin receiver.
Further, in this strength test, the strength test of each bar material having the folded plate portion and the form having the folded plate portion is performed together, and the test results are compared and examined.

The test materials used in the strength test are six types of materials 1 to 6, all of which can be used as a bar material used for a base such as a ceiling. Of these bar materials, materials 1 to 4 have a shape without a folded plate portion, and materials 5 and 6 have a shape with a folded plate portion.
Each of the materials 1 to 6 uses the same material as the steel material, and is formed by bending a galvanized steel plate by pressing or the like.

  FIG. 4 shows a cross section and the like of the above materials 1 to 6. Each of the materials 1 to 6 has a U-shaped cross section including a substrate portion and upper and lower rising plate portions, and a dimension (L) of a base width (from an upper end portion to a lower end portion) of the substrate portion is 38 mm, and each rising portion is formed. The dimension (M) of the rising width (from the right end to the left end) of the plate portion is 12 mm.

Next, each material will be described.
The material 1 in FIG. 2A has a plate thickness of 0.9 mm and a flat substrate portion. This is a product that has been conventionally used as a field receiving material.
The material 2 in FIG. 3B has a thickness of 0.6 mm, and several (here, seven) groove line portions having a V-shaped cross section are formed in the substrate portion by pressing. (The shape of FIG. 3B).
The material 3 shown in FIG. 3C has a plate thickness of 0.6 mm, and the substrate portion is entirely formed of a honeycomb (regular hexagonal) uneven portion (a concave hexagonal shape) formed by press working (embossing). (FIG. 3C).
The material 4 in FIG. 4D has a plate thickness of 0.6 mm and a flat substrate portion.

The following materials 5 and 6 are base bar materials according to this embodiment.
The material 5 in FIG. 5E has a plate thickness of 0.5 mm, and is folded back on the rising plate portion to form a folded plate portion (the base bar material 2 described above).
The material 6 in FIG. 6F has a plate thickness of 0.5 mm, and a folded plate portion is formed on a part of the rising plate portion and the substrate portion (the above-described second base bar material 22).
Except for materials 2 and 3, the substrate is flat.

Tables 1 and 2 show the test results.
(Table 1)

(Table 2)

  First, according to the above JIS standard, the maximum deflection amount is 5 mm or less (loading load: 740 N) in the performance standard of the downward load test (field support), but in this regard, the strength test (loading load: 744.8 N). , The above-mentioned performance standards are satisfied for all of the above-mentioned materials 1 to 6. Similarly, the amount of residual deflection is set to 1 mm or less in the above standard, but the performance standard is satisfied for all of the materials 1 to 6.

  Next, as a particularly typical material, the material 1 and the material 5 (the base bar material 2 having a folded plate portion) are compared. First, the thickness of the material 1 is 0.9 mm, the thickness of the material 5 is 0.5 mm, and the material 5 is 44% thinner. The weight of the unit length is 0.402 kg / m for the material 1 and 0.315 kg / m for the material 5, and the material 5 is 21% lighter.

According to the result of the strength test (deflection), the maximum deflection amount is 4.16 mm for the material 1 and 3.74 mm for the material 5, and the maximum deflection amount of the material 5 is smaller than that of the material 1. Excellent flexural strength. That is, it is considered that the strength is raised by performing the processing of the folded plate portions 10 and 12 obtained by folding the rising plate portion of the base bar material 2.
Further, according to the results of the strength test (residual deflection), the residual deflection amounts are 0.29 mm for the material 1 and 0.36 mm for the material 5, and the material 5 is slightly inferior to the material 1. I have.

When the material 5 and the material 6 are compared, the maximum deflection is slightly smaller in the material 6 and the material 6 is superior in strength. This is because the folded plate portion of the material 6 extends from the rising plate portion to a part of the substrate portion. However, regarding the amount of residual deflection, the material 5 is smaller than the material 6, and the restoring force of the material 5 is superior.
For this reason, it is preferable to select the material 6 when the strength is required, and the material 5 when the restoring force is required. However, the material 5 is excellent in strength as compared with the other materials 1 to 4, and is also good in weight reduction.

Further, when comparing the material 4 with the material 2 (with a V-groove line portion) and the material 3 (with a honeycomb-shaped uneven portion) having the same plate thickness (0.6 mm), the maximum deflection amount is larger than that of the material 4. Material 2 and material 3 are higher. For this reason, in the case where the bar material has a flexible cushioning property, an uneven pattern may be provided on the substrate portion like the material 2 and the material 3.
Further, of the material 2, the material 3, and the material 4, the material 3 has the least amount of residual deflection. Therefore, when a material having a high restoring force is desired, a honeycomb-shaped emboss for the material 3 may be applied.

In addition, when comparing the above materials 2 to 4 (all with a plate thickness of 0.6 mm) and the above material 5 (with a plate thickness of 0.5 mm and a folded plate portion), the difference in plate thickness is 0.1 mm, The maximum deflection amount of the material 5 is considerably smaller than that of the material 5, and the effect of the folded plate portion is exhibited.
Also, when comparing the above-mentioned material 1 with materials 2 to 4 having a smaller plate thickness, the maximum deflection amount generally tends to increase and the strength tends to decrease in a thin material. It tends to be less.

According to the above test results, according to the underlayer bar material 2 (sheet thickness 0.5 mm) according to this embodiment as the material 5, compared with the material 1 (sheet thickness 0.9 mm) which has been widely used conventionally. The thickness can be reduced by about 40 to 50%.
Further, the weight per unit length is 0.315 kg / m for the material 5 (bar material 2 for base) and 0.402 kg / m for the material 1. For this reason, the base bar material 2 can be reduced in weight by about 20% as compared with the conventional product (material 1).
Further, by performing a folding process like a folded plate portion of the material 5 (the base bar material 2), the end portion is rounded, and work safety such as improved end surface safety is secured. The effect similar to that of the base bar material 2 can also be expected for the second base bar material 22.

As described above, since the base bar materials 2 and 22 have high strength related to the amount of deflection, they are excellent in use as a base bar for a ceiling, for example, as a field receiving member for receiving a field material. In addition, it can be used as a lightweight ceiling base material, a ceiling wiring duct, or a lightweight wall base material. In short, it can be used as a substitute for the C-bar-shaped material used in the above materials.
In addition, since the thickness of the sheet can be reduced, fixing with screws can be easily performed, and the usage can be diversified.

FIG. 5 shows a ceiling base structure using the base bar material 2.
In this ceiling base structure, the base bar material 2 is used as a field edge receiving material, and the clip 30, the field edge material 32, the hanger 34, and the like are used in addition.

As shown in FIG. 6, the clip 30 has a flat mounting portion 35 and side plate portions 36, 36 rising from right and left ends of the mounting portion 35 at right angles.
Then, the upper and lower middle portions of the side plate portions 36, 36 are notched back and forth by about half (plate width), and the upper side plate portions 39, 39 above the cutout portion 37 are cut out. Are bent at right angles about the vertical line to form receiving plate portions 38, 38, and the upper portion of the receiving plate portion 38 is extended. This is a shape in which the locking portions 40, 40 are provided by being bent in a bent shape.
The receiving plate portions 38 are formed integrally with the front end portions 41 of the side plate portions 39, and are orthogonal to the side plate portions 39, 39, and the substrate of the base bar material 2 held by the clip 30. A plane parallel to the part 4 is formed.

The edge material 32 is formed by bending a thin lightweight steel plate by press working or the like, and is a square tube material having a rectangular cross section including left and right vertical surfaces 42 and 42 and upper and lower horizontal surfaces 44 and 45.
The hanger 34 is made of a steel plate and has a vertically long support plate portion 46, a receiving portion 48 having a U-shaped cross section below the support plate portion 46, and a connection portion 50 having an upper portion of the support plate portion 46 bent laterally. have.

In this ceiling base structure, the edge material 32 is held by the base bar 2 using the clip 30.
A beam 52 is erected in the structural part of the ceiling, and a connection fitting 54 is attached to the beam 52, and a hanger 34 is fixed to a lower portion of the connection 54. The lower end of the connection fitting 54 is bent into an L shape, and this portion and the connection portion 50 of the hanger 34 are fixed with rivets 56.
A plurality of hangers 34 are attached along the beam member 52, and the receiving bar 48 of each hanger 34 holds the base bar 2.

The other underlying bar materials 2 are similarly arranged on the ceiling in a state parallel to each other.
Then, a field edge material 32 is erected in a direction perpendicular to the lower part of each base bar material 2, and the base bar material 2 supports the field edge material 32 using the clip 30.
The clip 30 places the bedding material 32 on the placement portion 35, and in this state, the upper part of the bedding material 32 is disposed below the base bar material 2, and the locking portions 40, 40 is locked and fixed to the base bar material 2. The locking portions 40 are locked to the first rising plate portion 6 of the base bar 2 in a bent state.

  At this time, as shown in FIG. 7, the substrate portion 4 of the base bar material 2 comes into contact with the receiving plate portions 38 of the clip 30. The receiving plate portions 38, 38 are supported by upper side plate portions 39, 39 orthogonal to the receiving plate portions 38, so that the side plate portions 39, 39 exhibit a rib-like function of reinforcing the receiving plate 38. I do. The side plates 39, 39 are also a part of the side plates 36, 36.

Then, the substrate portion 4 of the base bar material 2 is applied to the entire front ends 41, 41 of the side plate portions 39, 39 and the receiving plate portions 38, 38, and at the same time, the locking portions 40, 40 of the clip 30 are moved to the base bar portions. The first upstanding plate portion 6 of the material 2 is locked. As a result, the board portion 4 of the base bar material 2 is held by the side plates 39, the front ends 41, 41 and the receiving plates 38, 38 as a whole.
Therefore, the side plate portions 36 and 39 and the receiving plate portion 38 of the clip 30 are effective in reinforcing the substrate portion 4 of the base bar 2.

Since the thin and lightweight steel plate is used as it is (single) for the substrate portion 4 of the base bar material 2, the strength against external force such as bending is reduced accordingly. Since the reinforcing members 36, 39 and the receiving plate portion 38 are reinforced, high strength is maintained.
Further, the substrate portion 4 of the base bar material 2 and the receiving plate portion 38 of the clip 30 may be fixed with an adhesive or a fastener such as a screw or a bolt. Thereby, the above-described reinforcing effect of the base bar material 2 on the substrate portion 4 is further increased.

  Therefore, according to the above-described embodiment, it is possible to reduce the weight of the base bar material, to secure sufficient strength against bending and the like, and to obtain excellent effects of safety and economy. Furthermore, according to the ceiling base structure, since the side plate part of the clip is formed in a direction orthogonal to the base part of the base bar material, the side plate part has a rib-like function with respect to the base part of the base bar material. This has the effect of effectively reinforcing the thin plate-like substrate portion and increasing the strength.

2 Base bar material 4 Substrate part 6 First rising plate part 8 Second rising plate part 10, 12 Folding plate part 24, 26 Second folded plate part 32 Field material 35 Placing part 36 (39) Side plate Part 38 receiving plate part 40 locking part 41 front end part

Claims (9)

A base bar material used as a base material of a building,
A thin, lightweight steel plate is formed in a bent shape, and the substrate portion, a first rising plate portion bent at a right angle from one side thereof, and a second rising plate portion bent at a right angle from the other side have a U-shaped cross section. Has,
On the first and second rising plate portions, each of the steel plates is bent inward at an end thereof and folded to form a folded plate portion in which the steel plates overlap doubly, for a foundation of a building, Bar material.   The ratio of the folded width of the folded plate portion to the rising width of the first and second rising plate portions is 30% to 50%, preferably 50% to 65%, and more preferably 65% to 85%. The bar material for foundation of a building according to claim 1, wherein the range is as follows.   The bar according to claim 1, wherein the folded plate portion is further extended to a part of the substrate portion to form a second folded plate portion in which the steel plates overlap doubly. Wood.   The thickness of the thin lightweight steel plate is 0.2 mm or more and 1.2 mm or less, preferably 0.3 mm or more and 0.8 mm or less, more preferably 0.4 mm or more and 0.6 mm or less. 3. The bar material for foundation of a building according to any one of 3.   The base of a building according to any one of claims 1 to 4, wherein a plurality of groove lines having a V-shaped cross section formed in the longitudinal direction or a honeycomb-shaped uneven portion are provided on the substrate portion. Bar material.   The bar material according to any one of claims 1 to 5, wherein the first and second rising plate portions are used horizontally and the substrate portion is used vertically.   The bar material for a building according to claim 6, wherein the bar material for a base material is used as a field material for supporting a field material as a ceiling material. A ceiling base structure using the base bar material for a building according to any one of claims 1 to 7,
The base bar is supported by the hanging member from the ceiling, with the first rising plate portion on the upper side and the substrate portion vertical, and a lower edge of the base bar in a direction orthogonal to the lower portion of the base bar. Place the material,
Using a clip, placing the edge material on the clip and holding the base bar material,
The clip has a side plate portion oriented in a direction orthogonal to the base bar material, and a receiving plate portion formed integrally with a front end of the side plate portion and formed of a plane parallel to the substrate portion of the base bar material. ,
The base portion of the base bar material is applied to the front end portion of the side plate portion and the receiving plate portion, and at the same time, the upper locking portion of the clip is locked to the first rising plate portion of the base bar material, A ceiling base structure, wherein the base part of the base bar material is held by the side plate part and the receiving plate part. The clip includes a flat placement portion on which the edge material is placed, the side plate portions rising at right angles from right and left ends of the placement portion, and a portion of the side plate portion with a part cut away. A front end portion of the side plate portion formed by bending an upper portion of the side plate portion at a right angle and the receiving plate portion formed integrally therewith and forming a plane parallel to the substrate portion of the base bar material; and the receiving plate portion. And the above-mentioned locking portion extending the upper part of
The front end portion of the side surface portion and the receiving plate portion, the substrate portion of the base bar material is applied, and simultaneously the locking portion of the clip is locked to the first rising plate portion of the base bar material, 9. The ceiling base structure according to claim 8, wherein the base part of the base bar material is held by the side plate part and the receiving plate part.

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