JP3371710B2 - Hollow structural material - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow structural material used for a beam or the like of a building, and more particularly to a hollow structural material made of an aluminum alloy extruded profile and a plate material and having a relatively large height and a light weight. .

[0002]

2. Description of the Related Art U.S. Pat. No. 4,713,924 is used as a hollow structural member made of an aluminum alloy extruded shape member.
The beam structure described in Japanese Patent Publication is known. In this beam structure material 100, as shown in FIG. 7, thin corrugated plates 110 having S-shaped bent portions 112 formed along the upper and lower edges are connected by caulking on both sides of a pair of upper and lower shape members 102 facing each other. It is fixed. That is, flanges 103 having an L-shaped cross section are provided on both sides of each of the above-mentioned shape members 102, and vertical pieces 104 are vertically provided inside thereof. On the outer surface of the vertical piece 104, a ridge 105 is provided over the entire length. In addition, at the inner corner of the flange 103, a groove 107 is formed at the tip.
A bent piece 106 having a groove is obliquely provided (see the upper right), and a concave groove 108 is formed over the entire length inside thereof.

On the other hand, the corrugated plate 110 has the bent portions 112 having an S-shaped cross section formed over the entire length along the upper and lower edges of the corrugated cross section by a dedicated device. Then, a pair of upper and lower profile members 102 are spaced apart to face each other, and the corrugated plate 11 is placed in a pair of upper and lower recessed grooves 108 facing each other on both sides thereof.
When the upper and lower side edges of 0 are inserted, each bent portion 11 of the corrugated plate 110
The base 2 of the No. 2 engages with the ridge 105 on the outer surface of the vertical piece 104 of the profile 102. Further, the bent piece 10 that is obliquely projected
When 6 is pressed by a horizontal roller and bent, the outer side of each bent portion 112 of the corrugated plate 110 is engaged with the recessed ridge 107 at its tip, and the corrugated plate 110 is bent by the upper and lower bent portions 112. It is connected and fixed to the upper and lower shape members 102. Further, the bent pieces 106 are crimped from the outside together with the inner corrugated plate 110 by a punch (not shown) at equal intervals to prevent the corrugated plate 110 from coming off (see FIG. 17 of the above-mentioned US Patent Publication).

However, in the beam structure material 100, when it is desired to make the beam structure large, the corrugated plate 110 becomes high and the sectional shape becomes vertically elongated. Then, with a relatively small external force, buckling due to a compressive load from above may occur. Furthermore, corrugated sheet 1
Since 10 is fixed to each of the upper and lower shape members 102 by the bent portions 112 having an S-shaped cross section along the upper and lower edges thereof, the corrugated uneven cross section toward the respective shape members 102 is crushed by the bent portion 112. Therefore, the original strength of the corrugated sheet is considerably reduced. In addition, in order to obtain the bent portion 112 having the S-shaped cross section, there is a problem that a dedicated bending device is required and the cost becomes high.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art and improves the strength of a structural material having a relatively large hollow cross section so that buckling due to a vertical load is less likely to occur. It is also an object of the present invention to provide a hollow structural material that is lightweight and easy to assemble.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a structural member having a relatively large hollow cross section with reinforcing means arranged against its buckling stress along its longitudinal direction. It was made paying attention to doing. In other words, the present invention
The first hollow structural member (Claim 1) comprises a pair of upper and lower shaped members facing each other along the longitudinal direction, and a pair of plate members arranged on both sides of these shaped members along the longitudinal direction. It is a hollow structural material and has a reinforcing material fixed at least to the plate material at an intermediate position between the above-mentioned shape members and along the longitudinal direction.
And, in the usage state of the hollow structural material, the reinforcing material,
It is fixed at the position of the section that receives compressive stress and
A pair of plate materials are arranged along the longitudinal direction in a corrugated uneven shape.
Corrugated plate, wherein the reinforcing material is the corrugated uneven shape of the corrugated plate.
Spacers with sides similar to or similar to
Is interposed between the corrugated plate and the corrugated plate . The pair of shape members are arranged vertically opposite to each other along the horizontal longitudinal direction of the hollow structural material, or arranged along the left and right of the horizontal longitudinal direction, or along the left and right of the vertical longitudinal direction. It is also included when it is arranged. In short, all the forms that are arranged facing each other and separated from each other along any longitudinal direction are included. As the pair of shape members, extruded shape members made of aluminum alloy are used, but members formed by bending a plate material such as roll forming, or assembled members thereof are also used.

The second hollow structural material according to the present invention
(Claim 2) is a pair of upper and lower shapes facing each other in the longitudinal direction.
Timber and arranged longitudinally on both sides of these profiles
A hollow structural material consisting of a pair of plate materials
At an intermediate position between the materials and along the longitudinal direction at least the above
It has a reinforcing material fixed to the plate and the reinforcing material is hollow.
The position of the cross section that receives a compressive stress when the structural material is in use
The above-mentioned plate materials are divided into upper and lower parts,
Reinforcement to connect with each of these plates between the upper and lower plates
A pair of intermediate profiles, which also serve as materials, are arranged along the longitudinal direction.
And, characterized in that. Second hollow structural material as described above
The intermediate section is integrally formed with a hollow part along the longitudinal direction.
The hollow structure material (claim 3) and the pair of intermediate shape materials
Connect horizontal pieces between each other, and place hollow parts above and below the horizontal pieces.
Also includes a hollow structural material (claim 4) formed along the longitudinal direction.
Get caught Furthermore, the third hollow structural material (claim)
Item 5) is a pair of upper and lower shape members facing each other in the longitudinal direction.
And along the longitudinal direction on both sides of these profiles
A hollow structural material composed of a pair of plate materials, each of the above-mentioned shape members
At least the plate at an intermediate position between and along the longitudinal direction
Has a reinforcing material fixed to the material, and the reinforcing material has a hollow structure.
The position of the cross section that receives compressive stress when the building material is in use
The upper profile is fixed along the lengthwise direction.
Has a hollow part integrally, and the lower side part of the hollow part is reinforced above
The feature is that it also serves as a material .

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments for carrying out the present invention will be described below with reference to the drawings. FIG. 1 shows the hollow structural material of the present invention.
It relates to a beam 1 showing the principle . FIG. 1A is a vertical cross-sectional view of the beam 1. The beam 1 includes a pair of shape members 2 arranged vertically opposite to each other along a horizontal longitudinal direction, and a longitudinal direction on both sides of these shape members 2. It is composed of a pair of plate members 10 arranged along with each other, and has a hollow portion 7 along the longitudinal direction between them. Shape 2
Is a horizontal piece 3 at the center, vertical pieces 4 extending at right angles to both ends thereof, and a groove 5 having an opening at an end face of these vertical pieces 4.
It is an extruded profile made of aluminum alloy, which has a single length along its length.
The plate material 10 is an aluminum alloy plate having a plate thickness equivalent to that of the groove 5. The plate member 10 is inserted into the left and right recessed grooves 5 between the pair of upper and lower shape members 2, with both ends in the width direction thereof being vertically arranged, and the tapping bolt 19 is horizontally screwed from the outside of the vertical piece 4. Be entered. In advance, a through hole is formed in the end of the plate member 10 and the vertical piece 4, and the bolt 19
Penetrates while tapping in the hole.

Reinforcing members 20 are temporarily fixed in advance above the inner side surfaces of the left and right plate members 10 over the entire length in the longitudinal direction by spot welding or the like. The bolt 19 is screwed into and penetrates the reinforcing material 20 from the outside of the plate material 10. The position where the reinforcing member 20 is fixed is determined by the vertical load in the use state of the beam 1 and the inside of the plate member 10 within the upper half of the cross section which receives compressive stress when the central portion bends downward. Select either the side surface or the outer surface.
That is, when the beam 1 becomes large, if the plate member 10 is made vertically long in order to make the cross-sectional shape vertically long in order to suppress the flexural deformation,
Since the plate member 10 easily buckles, the reinforcing member 20 is fixed to prevent it.

FIG . 1B shows a second hollow structure according to the present invention.
Shows a partial cross section of beam 1, which is a lumber, and has a pair of upper and lower shapes
The plate member 11 and the lower plate 12 on which divides each plate 10 of the left and right that are arranged along both sides of the longitudinal direction of the timber 2 in the vertical
However, an intermediate profile 20 'that doubles as a reinforcing material is interposed between them.
Has been done . That is, the intermediate shape member 20 'which also serves as a reinforcing material is
It is an extruded shape member integrally including a square portion 21 having a square hollow portion and an outer piece 22 having a groove 23 vertically inserted on the outer side thereof and having grooves 23 into which the respective end portions of the upper plate member 11 and the lower plate member 12 are inserted. Then, with the ends of the upper and lower plate members 11 and 12 inserted in the grooves 23, the tapping bolts 19 are screwed in from the outside,
An intermediate frame member 20 'is fixed to the plate members 11 and 12. An intermediate profile 20 'having such a hollow portion over its entire length is used, and a plate material 1 is also used.
By dividing 0 into the upper and lower plate members 11 and 12 which are divided into upper and lower parts, the force against the buckling of the plate members can be further improved .

FIG. 1 (C) is a partial cross-sectional view showing a beam 1 using another intermediate section 20 ″ which also serves as a reinforcing member.
Reference numeral 0 ″ is an integrally extruded shape member in which the inner side surfaces of the respective rectangular portions 21 of the same intermediate shape member 20 ′ part are connected to each other by a horizontal piece 24 on the left and right. By using such an intermediate shape member 20 ″, The plate member 10 is vertically divided and fixed, and the horizontal piece 2
Since the beams 1 are connected to each other, each plate can withstand a high buckling stress even when the beam 1 receives a bending load from above. Moreover, since the horizontal piece 24 also has the two hollow portions 8 and 9 in the upper and lower portions of the beam 1 itself, the strength against twisting or the like can be increased.

FIG. 2 shows the first and second aspects of the present invention .
The present invention relates to a beam 1 which is a hollow structural material . Figure 2 (A) shows the cross section of beam 1.
It is shown, between the same pair of upper and lower profile 2, the corrugated plate 13 and along the waveform irregularities longitudinally disposed, each groove 5
The corrugated spacer 14 as shown in FIG.
In addition, it is fixed with tapping bolts 19.
In addition, the corrugated spacer 1 is also previously formed on one side surface of the reinforcing member 20.
4 is attached to the upper side of the inside of each plate 10 and the bolt 1
Fixed at 9. FIG. 2 (B) shows a state in which the end portions of the corrugated plate 13 divided into the upper and lower parts are inserted together with the corrugated spacers 14 into the groove 23 of the intermediate shape member 20 ′ and fixed by the bolts 19. 2C also shows a state in which the corrugated plate 13 which is divided into upper and lower parts on both sides of the intermediate profile 20 ″ is fixed together with the spacer 14 by the bolts 19. As shown in FIG. For example, it is possible to integrally form the corrugated side surface 15 following the corrugated concavo-convex shape on the reinforcing material 20. Further, the corrugated side surface is also formed inside each groove 23 of the intermediate shape members 20 'and 20 "which also serve as the reinforcing material. You may form 15 integrally.

Next, the function of the reinforcing material in the structural material such as the beam will be described. FIG. 3A shows a cross section of a beam B having an I-shaped cross section and has a vertical web W between a pair of upper and lower flanges F. The width w1 of each flange F is 25 mm, and the thickness t1 is 4 m.
m, the thickness t of the web W was 2 mm, and the height h was changed in the range of 30 to 750 mm as described later. The relevant beam B is Al
-Mg-Si type A6001 alloy is T6 (quenched / tempered) treated. In addition, the reinforcing material S, as shown in FIG.
It has an angle-shaped cross section with a side w2 of 15 mm and a thickness t2 of 2 mm, and is made of an aluminum alloy of the same material as above. And
As shown in FIG. 3C, both ends of the beam member B are supported at a distance L, a load P is applied to the upper surface of the center, and the height h of the web W is changed depending on the presence / absence of the reinforcing material S to allow the allowable stress. Was calculated. still,
The following is ALUMINU of The Alminum Association
Based on M DESIGN MANUAL (issued in October 1994). First, regarding the beam material B without the reinforcement material S, the same magazine 1
-A-25 SubSec. 18 on page 25, and for the beam B having the reinforcing material S, SubSec. 19 on the above page were adopted. In the latter case, the reinforcing material S was fixed at the height of 0.8 h of the web W over the entire length as shown in FIG. 3 (A). The allowable stress calculation formula is determined by the Slenderness Limit (h / t), and the Slenderness Limit S1 is calculated by Formula 1 when the reinforcing material S is present, and by Formula 2 when the reinforcing material S is not provided. (See the above page, the same applies below).

[0014]

[Equation 1]

[0015]

[Equation 2]

The Slenderness Limit S2 is expressed by the equation 3 when the reinforcing material S is provided, and is expressed by the equation 4 when the reinforcing material S is not provided.
And each is required.

[0017]

[Equation 3]

[0018]

[Equation 4]

The above Bbr and Dbr are calculated by the equations 5 and 6, respectively (page 1-A-21 of the above-mentioned magazine).

[0020]

[Equation 5]

[0021]

[Equation 6]

K ₁ was a constant of 0.50 and Fcy was 266 MPa of compression resistance of the specimen. And
Slenderness Limet The allowable stress in the region between S1 and S2 is SubSec.18 (without reinforcement S) is Numerical formula 7, SubS
ec. 19 (in the case where the reinforcing material S is present) is calculated in accordance with Equation 8,
These were plotted as buckling stress on the graph for each height of the web W. 1 / _ny (coefficient) in each formula is omitted. From the material of the beam B and the heat treatment, B = 265, D =
0.263 is obtained in advance. Furthermore, the height and the plate thickness of the web W are used for h and t.

[0023]

[Equation 7]

[0024]

[Equation 8]

Next, the allowable stress in the region exceeding Slenderness Limet S2 is expressed by Formula 9 for SubSec. 18 (without the reinforcing material S), and SubSec. 19 (in the case where the reinforcing material S is provided) was calculated by the numerical formula 10, and these allowable stresses were plotted on the graph for each height of the web W, and S1 and S2 were also displayed. In each formula, k ₂ = 2.27 (page 1-A-21) was used. Also, E
Is the elastic modulus of the aluminum alloy. h and t are the same as above.

[0026]

[Equation 9]

[0027]

[Equation 10]

The above results are shown in the graph of FIG. Both the beam members B with and without the reinforcing member S are common in that the allowable stress decreases as the height h of the web W increases. It is shown that the higher the web W is, the stronger the bending is, but the more easily buckling occurs. In addition, the beam B without the reinforcing material S has a short area calculated by the left-side expression 8 and sharply decreases as the web W increases, whereas the beam B having the reinforcing material S The area calculated by the above Equation 7 is long and gentle. Incidentally, when the allowable stress is 140 MPa, the reinforcing material S
The height of the web W of the beam material B having no reinforcement is 220 mm, while the height B of the web W of the beam material having the reinforcing material S is 46 mm.
The height was 0 mm, which was about twice the height, and the effect of attaching the reinforcing material S was remarkable. Further, the beam B without the reinforcement S
Shows a curve in which the range of the area calculated by the right-hand formula 9 decreases greatly, while the beam B having the reinforcement S has a range of the range calculated by the right-hand formula 10 It exhibits a small, gently declining curve. Incidentally, when the height of the web W is 500 mm, the allowable stress of the beam B having the reinforcing material S is about four times that of the beam B having no reinforcing material S. From the above,
It is understood that by attaching the reinforcing material S to the beam material B as described above, a high allowable stress can be obtained even if the web W is made large and high. The beam material B having the I-shaped cross section can be applied to the hollow structural material of the present invention by dividing the plate thickness of the web W into left and right halves.

[0029] Figure 5 relates to the beam 30 are different forms of the second hollow structural member according to the present invention, a side view of FIG. 5 (A) and 5
As shown in the sectional view of (B), a pair of upper and lower shape members 32 along the horizontal longitudinal direction, and upper and lower plate members 51 and 52 which are vertically divided and arranged between these left and right members. It is composed of a pair of left and right intermediate members 40 which are interposed between and fixed to each other, and an intermediate plate member 53 which is connected between these intermediate members 40. The shape member 32 includes a wide horizontal piece 33, a groove 34 provided at both ends thereof at a right angle, and a caulking piece 35 inside the groove 34.
And an outer side of the caulking receiving piece 36, and the side surface inside the concave groove 34 of the caulking receiving piece 36 is an extruded profile having the caulking receiving groove 37 over its entire length. Further, the intermediate frame member 40 has concave grooves 42 symmetrically above and below the vertical piece 41, and caulking pieces 43, caulking receiving pieces 44, and caulking receiving grooves 45 on both sides thereof.
A caulking piece 46 and a caulking receiving piece 47 that extend horizontally in parallel from the center of the inner surface of the vertical piece 41, a concave groove 48 opening inside between them, and a caulking receiving piece 47 side. It is an extruded profile having grooves 49.

Next, the upper end of the upper plate member 51 is inserted into each groove 34 of the upper profile 32, and a punch (not shown) is inserted from the inside.
Are equally spaced along the longitudinal direction. At this time, a receiving die (not shown) is brought into contact with the outer caulking receiving piece 37. Then, as shown in FIG. 5 (C), outward caulking protrusions 38 are formed on each caulking piece 35 of the shape member 32, and caulking protrusions 55 that enter the caulking receiving groove 37 are formed on the adjacent upper plate member 51. Then, both are fixed by crimping. Furthermore, the upper plate material 5
The upper concave groove 42 of the intermediate shape member 40 is fitted to each lower end portion of 1, and the punch is punched in the same manner as described above to form the caulking convex portion 43a on the caulking piece 43 and the caulking receiving groove 45 on the adjacent upper plate member 51. A caulking convex portion 55 that enters inside is formed, and both are caulked.
Then, both ends of the middle plate member 53 are inserted into the respective horizontal recessed grooves 48 of the intermediate shape member 40, and the caulking convex portion 4 is similarly formed.
Hollow unit 30 'in which 6a and 55 are formed in the vertical direction (see FIG. 5D) and the intermediate profile 40 is fixed to both sides of the bottom side.
To get

The upper and lower ends of the lower plate member 52 are placed in the downward grooves 42 of the left and right intermediate sections 40 of the hollow unit 30 'and in the downward grooves 34 of the lower section 32, respectively. Inserted and punched in the same manner as above to form the caulking convex portions 43a and 55 and 38 and 55, and having a large and small hollow portion in two steps as shown in FIG. 5 (B). The material 30 is obtained. Therefore, even if the structural material 30 is subjected to bending load, the upper and lower plate members 51, 52 can be separated by the intermediate shape member 40 and the intermediate plate member 53.
Even if it has a high dimension, it can obtain a strong strength against buckling. Moreover, since each shape member and the plate member are fixed by crimping, the strength is not easily reduced. In addition, the above-mentioned middle plate material 53
It is desirable that the mounting position be set to about 1/5 to 1/4 above the height of the beam 30 based on the calculation result. In the above embodiment, the caulking pieces 5, 43 are provided on the hollow side and the caulking receiving pieces 36, 44 are provided on the outer side. However, these positions are reversed, and the caulking receiving pieces 36, 44 are provided on the hollow side. Is also good.

FIG. 6 shows a third hollow structural member according to the present invention .
Regarding the beam 60 which is , as shown in the side view of FIG . 6 (A) and the sectional view of FIG . 6 (B), the upper profile member 61 arranged along the horizontal longitudinal direction has a hollow portion 62. Use one.
That is, the shape member 61 includes a rectangular portion 63 that encloses the hollow portion 62,
It is an extruded profile having an inner crimping piece 64 hung at both ends of its bottom surface, an outer crimping receiving piece 65, and a downward groove 66 between them. Groove 6 of caulking receiving piece 65
On the side surface inside 6, there is a caulking groove 67. Also,
The lower profile 70 has a wide horizontal piece 71 similar to the above,
It has a concave groove 72 provided upward on both ends thereof, a caulking piece 73 inside the concave groove 72, and an outside caulking receiving piece 74,
The caulking receiving piece 74 is an extruded profile having caulking receiving grooves 75 on the side surface inside the groove 72.

Then, the shape member 61 and the shape member 70 are arranged horizontally facing each other in the vertical direction, and the upper and lower end portions of the pair of plate members 80 are inserted into the respective concave grooves 66 and 72. Furthermore, each shape 6
1, 70 caulking pieces 64, 73 are punched from the inside at equal intervals by punches, and caulking pieces 64, 73 are provided with outwardly facing caulking convex portions 68, 76, respectively, and caulking receiving portions at the upper and lower ends of the adjacent plate member 80. Caulking convex portions 82 that enter the grooves 67 and 75 are formed, and the shape members 61 and 70 and the pair of plate members 80 are connected and fixed by caulking. The beam 60 is formed by an upper profile member 61.
There has a hollow portion 62 in the entire length, and, since the lower side portion 63a of the rectangular portion 63 also serves as a reinforcing member similar to the intermediate plate member 53, the left and right plate 80 even under load bending buckling You can resist enough. In this case, both side surfaces of the rectangular portion 63 are considered to be similar to the plate material 80. Moreover, since there are few parts to be caulked, there is an advantage that the assembly is easy.

The present invention is not limited to the embodiments described above. The pair of upper and lower shape members are arranged in parallel to each other, a cantilever beam in which one of them is gently inclined with respect to the other, or an arch-shaped beam in which one or both are curved symmetrically, or It is also possible to use it as a cantilever having both curved and one end tapered. Further, a horizontal member of each shape member may be extended to the left and right, and a horizontal flange may be provided so as to project, so that a beam member having a cross-section I shape having a web of a pair of plate members may be used. Further, the hollow structural material of the present invention can be used not only as a quasi-structural material that is obliquely fixed such as a bracing, but also as a vertically erected column. However, in this case, the position to fix the reinforcement is
It is necessary to set in consideration of the longitudinal load of the hollow structural material such as the central position between the profile members depending on the standing position of the pillar.

The reinforcing material is a long aluminum extruded shape member, mold
In addition to metal materials such as steel and bent materials of similar metal plates, molding materials of engineering plastic such as polycarbonate and composite materials such as FRP and FRM can also be used. Further, as the method of fixing the reinforcing material to the plate material, screwing or adhesion may be used in addition to the above. In particular, adhesion can be easily fixed by using a structural adhesive (JIS K 6800) nylon epoxy adhesive or the like, and by using it together with the bolt or caulking, or the screw fastening, the number of these used It can be reduced.

[0036]

The first hollow structural member according to the present invention (claims)
According to 1) , even if the dimensions of the left and right plate members are increased, and even if a bending load or the like is applied by the reinforcing members, sufficient strength can be maintained without buckling in the portion to which compressive stress is applied. . Moreover, the corrugated plate is used as the plate material, and the corrugated
Reinforcing material with side surfaces that follow the convex shape,
Since the reinforcing material is fixed to the corrugated plate via the spacer, it has a hollow structure.
The strength of the material can be reliably reinforced. Therefore,
Bending load can be increased by using hollow structural material as beam material.
When added, the compressed part is reinforced and the shear strength is also
Since it is improved, the reinforcing effect can be enhanced . Also in the second
According to the hollow structure material (Claim 2), in addition to the above strength, reinforcement
Also serves as an intermediate shape member that connects each plate material that is divided into upper and lower parts
Can be used . Furthermore, the third hollow structure material (claim
According to item 5), in addition to the above strength, the hollow of the upper profile
Since the lower side portion of the portion also serves as the reinforcing material , the strength can be improved without significantly increasing the weight of the entire structural material.

[Brief description of drawings]

1A is a vertical cross-sectional view of a beam showing the principle of the present invention , FIG.
Shows a partial cross-sectional view of a beam which is a second hollow structural member according to the present invention , and (C) shows a partial cross-sectional view of a beam using another reinforcing material.

2A is a longitudinal sectional view of a beam which is a first hollow structural member according to the present invention, and FIG. 2B is a cross sectional view of the present invention in which a different reinforcing material is used.
A partial cross-sectional view of a beam having both the first and second hollow structural members according to the above , (C) a partial cross-sectional view of a beam similar to (B) using another reinforcing material, (D) Shows a perspective view of a corrugated spacer, and (E) shows a perspective view of a reinforcing material having a corrugated side surface.

FIG. 3A is a cross-sectional view in which a reinforcing member is fixed to an I-shaped beam, and FIG.
Is a cross-sectional view of the reinforcing material, and (C) is a front view showing a state in which a load is applied to the I-shaped beam of (A) to measure the allowable stress.

FIG. 4 is a graph plotting the allowable stress when the height of the web of the I-shaped beam is changed depending on the presence or absence of the reinforcing material.

FIG. 5 (A) shows a second hollow structural member according to the present invention .
The side view of the beam of a different form , (B) is a BB sectional view in (A), (C) and (D) is each partial enlarged view in (B).

6A is a side view of a beam which is a third hollow structural member according to the present invention, and FIG. 6B is a sectional view taken along line BB in FIG. 6A.

FIG. 7 is a vertical sectional view showing a conventional hollow structural member.

[Explanation of symbols]

1,30,60 …………………………………… Beam (hollow structural material) 2,32,61,70 ………………… Shape 10, 11, 12, 51, 52 , 80 …… Plate material (upper plate material, lower plate material) 13 …………………………………………………… Corrugated sheet 14 …………………………………………… Spacer 20, 20 ', 20 ", 40 ……………… Reinforcing material (intermediate profile) 21, 62 …………………………………… Hollow part (square part)

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Laid-Open No. 2-18292 (JP, A) S.K. 57-44015 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) E04C 3/04

Claims (5)

(57) [Claims] 1. A hollow structural member comprising a pair of upper and lower shaped members facing each other along the longitudinal direction, and a pair of plate members arranged on both sides of these shaped members along the longitudinal direction. in an intermediate position between the profiles, and have a reinforcement which is at least fixed to the plate member along the longitudinal direction, and the reinforcement
Material undergoes compressive stress when used as a hollow structural material
The pair of plate members are fixed at the position of the cross section, and the corrugated uneven shape is arranged along the longitudinal direction.
A corrugated sheet, wherein the reinforcing material is the corrugated corrugations of the corrugated sheet.
Spacers with sides that mimic the shape or have similar sides
A hollow structure material, characterized in that a pacer is interposed between the corrugated plate and the corrugated plate . 2. A pair of upper and lower profile members facing each other in the longitudinal direction.
And along the longitudinal direction on both sides of these profiles
A hollow structural member composed of a pair of plate members, which is located at an intermediate position between the above-mentioned shape members and along the longitudinal direction.
Both have a reinforcing material fixed to the plate material, and
Material undergoes compressive stress when used as a hollow structural material
It is fixed at the position of the cross section, and each of the above plate materials is divided into upper and lower parts.
A pair of intermediate types that also function as the above-mentioned reinforcing members that are connected to each of these plates
A hollow structural material, wherein the materials are arranged along the longitudinal direction . 3. The hollow section formed along the longitudinal direction of the intermediate section.
The hollow structure material according to claim 2 , which is integrally provided. 4. A horizontal piece is connected between the pair of intermediate shape members.
Tie and form hollow parts above and below the horizontal piece along the longitudinal direction
The hollow structural member according to claim 2 or 3 was characterized by. 5. A pair of upper and lower profile members facing each other in the longitudinal direction.
And along the longitudinal direction on both sides of these profiles
A hollow structural member composed of a pair of plate members, which is located at an intermediate position between the above-mentioned shape members and along the longitudinal direction.
Both have a reinforcing material fixed to the plate material, and
Material undergoes compressive stress when used as a hollow structural material
It is fixed at the position of the cross section, and the upper profile has an integral hollow part along the longitudinal direction.
And, empty structural material in the lower side portion of the hollow portion you characterized in that, also serves as the reinforcing member.