JP7286461B2 - Joint structure between square steel pipe and H-beam steel, and joint structure between square steel pipes - Google Patents

Description

TECHNICAL FIELD The present invention relates to a joint structure between a square steel pipe and an H-section steel.

Conventionally, when joining members such as steel pipes and other members, a structure in which metal fittings such as cast steel ball joints are placed between the members and the cast steel metal fittings and the members are joined has been used. known (see Patent Document 1). In addition, such cast steel joints are sometimes used to rigidly join steel pipes (pipe members) used in structures such as single-layer domes.

JP-A-2-304134

However, in the configuration shown in Patent Document 1, the cast steel hardware used to join the members is heavy, so it is necessary to increase the structural strength of the entire structure including the joint structure, and the burden of construction. There is a problem of becoming

Therefore, the present invention has been made in view of the above circumstances, and provides a joining structure between a square steel pipe and an H-section steel and a joining structure between square steel pipes, which can reduce the weight.

In order to achieve the above object, the present invention employs the following means.
That is, the joining structure of a square steel pipe and an H-section steel according to the present invention is a square steel pipe and an H-section steel that join the ends of the square steel pipe and the H-section steel, which are arranged along a predetermined direction. At the end of the square steel pipe, a slit formed in a pair of opposing plate surface portions so as to penetrate in the plate thickness direction of the plate surface portion, and a web of the H-shaped steel a protruding web portion that protrudes toward the square steel pipe from the flange and is disposed inside the square steel pipe, wherein an end portion of the protruding web portion on the flange side is disposed in the slit; and welded to the pair of plate surface portions of the square steel pipe.

In the joint structure between the square steel pipe and the H-section steel configured in this way, the flange-side end of the protruding web portion of the H-section steel is arranged in the slit formed in the pair of plate surface portions of the square steel pipe, and the plate Welded to the face. In joining the square steel pipe and the H-section steel, it is not necessary to use a heavy material such as cast steel as in the conventional method, and the weight can be reduced by welding.

Further, in the joint structure of the square steel pipe and the H-section steel according to the present invention, it is preferable that an orthogonal plate portion orthogonal to the web is provided at an end portion of the square steel pipe.

In the joint structure between the square steel pipe and the H-section steel configured in this way, the square steel pipe is provided with an orthogonal plate portion perpendicular to the web at the end, so that deformation, twisting, etc. of the square steel pipe is suppressed. .

In addition, a joining structure for square steel pipes according to the present invention includes a plurality of joining structures for joining square steel pipes and H-section steels according to any one of the above, and the H-section steels are arranged so as to be adjacent to each other. A web connection plate is connected to the web of the H-section steel, and the flange and the web connection plate of the H-section steel are connected to a cover plate.

In the joining structure of the square steel pipes configured in this way, the web connecting plate connected to the H-section steel web and the H-section steel flange are connected to the cover plate. Therefore, when joining a plurality of square steel pipes, instead of using heavy materials such as cast steel as in the past, H-section steel is joined to the ends of the square steel pipes, and web connection plates and cover plates are used. , the weight can be reduced.

According to the joining structure between the square steel pipe and the H-section steel and the joining structure between the square steel pipes according to the present invention, weight reduction can be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a roof structure provided with a joint structure between square steel pipes and H-section steel and a joint structure between square steel pipes according to an embodiment of the present invention; BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the joining structure of a square steel pipe and H-section steel, and the joining structure of square steel pipes which concern on one Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing a joint structure between a square steel pipe and an H-section steel and a joint structure between square steel pipes according to an embodiment of the present invention; FIG. 3 is a sectional view taken along line IV-IV of FIG. 2; FIG. 3 is a cross-sectional view taken along line VV of FIG. 2;

DESCRIPTION OF THE PREFERRED EMBODIMENTS A joint structure between square steel pipes and H-section steel and a roof structure including a joint structure between square steel pipes according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a roof structure provided with a joint structure between square steel pipes and H-section steel and a joint structure between square steel pipes according to an embodiment of the present invention.
As shown in FIG. 1, the roof structure 10 according to this embodiment includes a dome frame 1, a string ring member 2, a plurality of string ring bundle members 3, and a plurality of radiating cables 4. . The roof structure 10 is, for example, a roof structure 10 of a building having a large space such as an athletic facility.

In the following description, P is the center of the roof structure 10 in plan view. In plan view, the major axis direction of the dome frame 1 is the X direction, and the minor axis direction is the Y direction.
The dome frame 1 is arranged along the spherical surface. The dome frame 1 has an elliptical shape with a center P as the center and a long side (major axis) in the X direction in a plan view.

The dome structure 1 has an inner peripheral ring member 11 , a plurality of circumferential members 12 , an outer peripheral ring member 13 , a plurality of radial members 14 and a plurality of oblique members 15 . In this embodiment, the dome structure 1 is a so-called single-layer dome structure.

The inner peripheral ring member 11 and the plurality of circumferential members 12 have a circular shape centered on the center P in plan view. The plurality of circumferential members 12 are arranged outside (radially outward) of the inner peripheral ring member 11 . The inner peripheral ring material 11 is arranged on the same plane. The circumferential members 12 are arranged on the same plane. In this embodiment, the inner peripheral ring member 11 is configured by connecting members made of H-shaped steel, and the circumferential direction member 12 is configured by connecting members made of square steel pipes.

The outer ring material 13 has an elliptical shape centered on the center P in plan view. The outer ring material 13 forms the outline of the dome frame 1 in plan view. In this embodiment, the outer ring material 13 is formed by connecting members made of H-shaped steel.

A plurality of slanted columns 16 having a V shape in front view are fixed to the outer peripheral ring material 13 . The slanted column 16 is installed in a lower structure (not shown).

The radial member 14 connects the innermost circumferential member 12 p arranged on the innermost side among the plurality of circumferential members 12 and the outer ring member 13 . A plurality of radial direction members 14 are arranged at intervals in the circumferential direction. A center P is arranged on the extension line of each radial member 14 . In other words, the radial members 14 extend radially. In this embodiment, the radial member 14 is configured by connecting members made of rectangular steel pipes.

The oblique member 15 connects the inner peripheral ring member 11 and the outer peripheral ring member 13 . The diagonal member 15 is formed along a curved line. In this embodiment, the oblique member 15 is configured by connecting members made of rectangular steel pipes.

A string ring material 2 is arranged below the dome frame 1 . In this embodiment, it is arranged directly below the outermost circumferential member 12q, which is arranged on the outermost side among the plurality of circumferential members 12. As shown in FIG.

The stringing ring material 2 has a circular shape (annular shape) centering on the center P in plan view. In this embodiment, the string ring member 2 is constructed by connecting members made of H-section steel. The tension ring member 2 functions as a tension ring, and can resist the force (thrust force) that the outer ring member 13 (peripheral edge) of the dome frame 1 tends to expand outward.

The string ring bundle 3 connects the outermost circumferential member 12 q and the string ring member 2 . The string ring bundle 3 extends vertically. A plurality of string ring bundles 3 are arranged at intervals in the circumferential direction. In this embodiment, the string ring bundle 3 is made of a circular steel pipe.

A radiation cable 4 connects the outer ring material 13 and the stringing ring material 2 . A plurality of radiation cables 4 are arranged at intervals in the circumferential direction. A center P is arranged on the extension line of each radiation cable 4 . In other words, the radiation cables 4 are arranged radially. In this embodiment, the radiating cable 4 consists of stranded wires of galvanized steel.

When the tension of the radiation cables 4 is divided into a vertical component force and a horizontal component force, the plurality of radiation cables 4 are configured so that the horizontal component force has the same magnitude. The bending stress of the outer ring material 13 is reduced by the tension of the radiation cable 4 .

Next, a joint structure 100 between the square steel pipes 5 such as the circumferential member 12, the radial member 14 and the oblique member 15 will be described.

Below, the joint shown in the A part of FIG. 1 is demonstrated.
FIG. 2 is a perspective view showing a joining structure 100 between the square steel pipes 5 in the A part of FIG. 1. As shown in FIG.
As shown in FIG. 2, in part A, two rectangular steel pipes 5 constituting the circumferential member 12, two rectangular steel pipes 5 constituting the radial direction member 14, and four rectangular steel pipes 5 constituting the oblique direction member 15 A total of eight square steel pipes 5 of the square steel pipes 5 are joined. Note that the joining structure 100 can be applied to a location where any number of two or more square steel pipes 5 are joined.

FIG. 3 is an exploded perspective view showing a joining structure 100 between square steel pipes 5. As shown in FIG.
As shown in FIGS. 2 and 3 , the joining structure 100 for the square steel pipes 5 includes square steel pipes 5 , H-section steel 6 , web connection plates 7 , and cover plates 8 .

First, a joint structure 101 (hereinafter sometimes simply referred to as a joint structure 101) between the end of each square steel pipe 5 and the corresponding end of the H-section steel 6 will be described. As shown in FIG. 3, the joint structure 101 comprises slits 52 and protruding web portions 63 .
A plurality of square steel pipes 5 are arranged on the same plane. The ends of the square steel pipes 5 are arranged so as to face the same point (referred to as the center Q of the joining structure 100 of the square steel pipes 5).
Here, the direction perpendicular to the plane on which the plurality of square steel pipes 5 are arranged is defined as the Z direction.

The square steel pipe 5 has four plate surface portions 51 . In a cross-sectional view orthogonal to the extending direction of the square steel pipe 5, the four plate surface portions 51 are arranged in a rectangular shape. In other words, the pair of plate surface portions 51 are arranged to face each other.

In a pair of plate surface portions 51 (hereinafter referred to as plate surface portions 51a) among the four plate surface portions 51 facing each other in the Z direction, the ends 51b facing the H-beam 6 side have a plate thickness direction (Z direction). A slit 52 is formed therethrough. The slit 52 is formed substantially in the center of the plate surface portion 51 in the width direction.

The H-section steel 6 extends along the extending direction (predetermined direction) of the connected square steel pipes 5 . A pair of flanges 61 of the H-section steel 6 are arranged to face each other in the Z direction. A web 62 of H-section steel 6 is arranged perpendicular to the flange 61 . The web 62 extends along the extending direction of the rectangular steel pipe 5 .

The web 62 is provided with a protruding web portion 63 protruding toward the rectangular steel pipe 5 from the flange 61 .

FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. FIG. 5 is a cross-sectional view taken along line VV of FIG.
As shown in FIGS. 4 and 5 , the protruding web portion 63 is arranged inside the rectangular steel pipe 5 . As shown in FIG. 4 , an end portion (end portion on the flange 61 side) 63 a on one side in the Z direction (hereinafter referred to as the +Z side) of the projecting web portion 63 is arranged in the slit 52 of the square steel pipe 5 . . A tip end face 63 b of the end of the protruding web portion 63 protrudes outside the rectangular steel pipe 5 .

An end portion (flange 61 side end portion) 63c of the protruding web portion 63 on the other side in the Z direction (hereinafter referred to as the -Z side) fits in the slit 52 of the square steel pipe 5 and protrudes outside the square steel pipe 5. do not have.

By arranging the ends 63a and 63c of the projecting web portion 63 in the slit 52 of the rectangular steel pipe 5, relative displacement in the plate thickness direction of the web 62 between the H-section steel 6 and the rectangular steel pipe 5 is suppressed. .

Ends 63 a and 63 c of the projecting web portion 63 are welded to edges of the slit 52 of the plate surface portion 51 of the square steel pipe 5 . The joint structure 101 transmits the axial force of the square steel pipe 5 to the web 62 of the H-section steel 6 .

As shown in FIGS. 3 and 5, orthogonal plates (orthogonal plate portions) 56 are provided on both sides of the web 62 at the ends of the rectangular steel pipe 5 . The orthogonal plate 56 is arranged orthogonal to the web 62 .

As shown in FIG. 3 , the web 62 of each H-beam 6 is connected to the web connecting plate 7 via a gusset plate 57 . The web connecting plate 7 is formed in a plate shape. The plate thickness direction of the web connecting plate 7 is the same direction as the plate thickness direction of the web 62 of the H-section steel 6 . The web connecting plate 7 is arranged on the extension line of the web 62 of the H-section steel 6 .

One end 7 a of the web connecting plate 7 is connected to the web 62 of the H-section steel 6 . The web connecting plate 7 connected to each H-section steel 6 is arranged with the other end 7b facing the center Q (so that the other end 7b of each H-section steel 6 is brought close to each other).

In this embodiment, two of the eight web connecting plates 7 arranged in a straight line 7A are configured as one continuous plate. Four of the eight web connecting plates 7, two web connecting plates 7B, are joined to the web connecting plate 7 at the center by welding or the like. The remaining two web connecting plates 7C of the eight web connecting plates 7 are arranged apart from the web connecting plates 7A and 7B. The eight web connecting plates 7 may all be made of steel joined by welding or the like.

The cover plates 8 are arranged on both sides in the Z direction (+Z side and −Z side) with the web connecting plate 7 interposed therebetween. The cover plate 8 has a shape that covers the web connecting plate 7 when viewed from the Z direction.

As shown in FIG. 5, an end portion 61a of the flange 61 facing the cover plate 8 is joined to the cover plate 8 by welding or the like. Both ends 7c of the web connecting plate 7 in the Z direction are joined to the cover plate 8 by welding or the like.

In the roof structure 10 configured in this way, the ends 63a and 63c of the projecting web portion 63 of the H-section steel 6 are arranged in the slits 52 formed in the pair of plate surface portions 51a of the square steel pipe 5, and the plate surface portions 51a is welded to In joining the square steel pipe 5 and the H-shaped steel 6, it is not necessary to use a heavy material such as cast steel as in the conventional art, and weight reduction can be achieved by welding.

Further, since the projecting web portion 63 of the H-section steel 6 is arranged inside the square steel pipe 5, the square steel pipe 5 is stiffened by buckling.

Further, since the orthogonal plate 56 orthogonal to the web 62 is provided at the end portion 51b of the square steel pipe 5, the square steel pipe 5 is prevented from being deformed, twisted, or the like.

Also, the web connecting plate 7 connected to the web 62 of the H-section steel 6 and the flange 61 of the H-section steel 6 are connected to the cover plate 8 . Therefore, when joining a plurality of square steel pipes 5, the H-shaped steel 6 is joined to the end of the square steel pipe 5 without using a heavy material such as cast steel as in the conventional method, and the web connection plate 7 and the cover plate By using 8, weight reduction can be achieved.

It should be noted that the various shapes, combinations, etc., of the constituent members shown in the above-described embodiment are merely examples, and can be variously changed based on design requirements and the like without departing from the gist of the present invention.

1...Dome frame 2...Strung string ring material (ring material)
3 ... String ring bundle material (bundle material)
4... Radiation cable (tensile material)
Reference Signs List 5 Square steel pipe 6 H-shaped steel 7 Web connection plate 8 Cover plate 11 Inner peripheral ring member 12 Circumferential member 13 Outer peripheral ring member 14 Radial member 15 Diagonal member 10 Roof structure 51 Plate surface portion 52 Slit 61 Flange 62 Web 63 Protruding web portion 56 Orthogonal plate (orthogonal plate portion)
100: Joining structure between square steel pipes 101: Joining structure between square steel pipe and H-shaped steel

Claims (3)

A joint structure between a square steel pipe and an H-section steel for joining an end portion of a square steel pipe and an end portion of an H-section steel, which are arranged along a predetermined direction,
slits formed in a pair of opposing plate surface portions at the ends of the square steel pipe so as to penetrate the plate surface portions in the plate thickness direction;
a protruding web portion provided on the web of the H-section steel, protruding toward the square steel pipe from the flange, and arranged inside the square steel pipe;
A joining structure for a square steel pipe and an H-section steel, wherein an end portion of the protruding web portion on the flange side is disposed in the slit and is welded to the pair of plate surface portions of the square steel pipe. . 2. The joining structure of a square steel pipe and an H-section steel according to claim 1, wherein an end portion of the square steel pipe is provided with an orthogonal plate portion orthogonal to the web. A plurality of joining structures of the square steel pipe and the H-section steel according to claim 1 or 2,
The H-shaped steels are arranged so that they are close to each other,
A web connecting plate is connected to the web of each of the H-beams,
A joining structure for joining square steel pipes, wherein the flange and the web connecting plate of the H-section steel are connected to a cover plate.

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