JP2000045395A - Connection type single pipe type structural member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a single pipe type structural member, which can be plastically deformed sufficiently without buckling even after yield by axial force, in which structure is simplified and which is manufactured easily. SOLUTION: A steel pipe 2 having a slenderness ratio of 30 or less is cut to the left and the right at a central site and forms end members 2A, 2A on both sides of the structural member 1, and joint devices 10 capable of connecting to steel structures are installed through end members 11 fixed and unified at the front ends of the end members. A steel pipe having the same outside diameter as the left-right end members 2A, 2A and compressive strength larger than the end members is connected between the end members in the longitudinal direction as an intermediate member 3A. Accordingly, the structural member can be equalized beforehand to a member substantially having the slenderness ratio of 30 or less to buckling though the actual slenderness ratio of the structural member is an intermediate value adopted normally. When the structural member is adopted as a compressive member, large plastic deformation is realized without generating buckling, energy by an earthquake is absorbed efficiently, and the excellent structural member as an earthquake-resisting material is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connected single-pipe type structural member, and more particularly to a steel pipe structural material for a brace or the like interposed in a framework of a steel structure for forming a steel structure, The present invention relates to a single steel pipe type structural member which is formed by connecting steel pipes having different compressive strengths in the longitudinal direction and which is optimal as a brace which does not cause elasto-plastic buckling.

[0002]

2. Description of the Related Art A brace 42 is often used for a structure 41 shown in FIG. However, in a commonly used brace, as shown in FIG. 11, when the compression side brace 42A buckles, the attachment portion 43 is pulled downward. If the beam 44 collapses, the structure cannot be given the required horizontal strength.

[0003] In order to prevent such collapse of the beam,
The beam itself must be made rigid or buckling must be avoided by using a thick and short brace member having a very small slenderness ratio and a large cross-sectional diameter. However, in either case, the beam or brace needs to have a very large cross section, which is not preferable from the viewpoint of architectural design.

[0004] Of course, if the cross-sectional area of the brace is increased, the rigidity of the brace itself becomes too high, and as a result, stress is concentrated too much on this brace. Therefore, there is a disadvantage in that the base portion to which the brace is attached must ultimately be excessively strong.

As means for avoiding such a problem, the present inventors have proposed a double steel pipe type structural member for truss in Japanese Patent Application Laid-Open No. 4-149345. This consists of an outer tube and an inner tube, and prevents the outer tube from buckling and bending due to the axial force applied from the outside, Suppression is maintained by the maintained bending resistance of the inner tube.

[0006] The outer tube of such a double steel tube type structural member is a main structural material that receives an axial force, and the inner tube is determined in advance of the outer tube so as to allow the outer tube to be deformed in the axial direction. It is selected to be shorter by the specified length. After the inner tube is inserted into the outer tube, the inner tube is spot-welded to the outer tube at any one position in the axial direction so that the inner tube does not shift in the outer tube. Stopped by. The outer diameter of the inner tube is selected so that a slight gap remains between the inner tube and the outer tube, so that the bending generated in the outer tube can be prevented as early as possible. .

The double steel pipe type structural member is expected to undergo axially symmetric plastic deformation along the inner pipe without buckling of the outer pipe when an extremely large axial compressive force is applied. However, the outer tube having the same thickness in the axial direction does not easily plastically deform to the length of the inner tube, and eventually the outer tube is bent together with the inner tube, which tends to induce buckling. is there.

The present inventors have proposed an improved version of such a double-pipe type structural member in Japanese Patent Application Laid-Open No. 6-346510. This is a double pipe provided with an outer cylindrical pipe in which a thick-walled pipe section is provided at both ends and a thin-walled pipe section is secured in a central portion having a long remaining portion. According to this, when an extremely large axial force is applied to the outer tube, the thin-walled tube portion is guided so as to undulate outwardly along the outer surface of the inner tube, thereby axially shrinking the outer tube. It facilitates plastic deformation. Therefore, the outer tube is compressed until both ends of the inner tube come into contact with the end members provided at the ends of the outer tube, and buckling can be avoided.

[0009] Thereafter, the sum of the proof stress of the outer tube and the proof force of the inner tube opposes the axial force, and the steel structure does not immediately collapse even if it continues to receive a large force. That is, when only the outer tube is plastically deformed in the axial direction by receiving the compressive force, the steel structure is gently deformed, but relatively large, and absorbs external energy due to an earthquake or the like.

On the other hand, when the axial force acts on the inner tube due to the contraction of the outer tube, the progress of the axial deformation of the outer tube is suppressed. Prevent the collapse or secure a long time before the collapse. If you notice the initial deformation of the structure due to the plastic deformation of the outer tube, the person inside will evacuate outdoors during the time until the collapse secured based on the total strength of the outer tube and the inner tube Safety can be improved.

[0011]

As described above, since the double tube brace does not buckle even if it is elongated, it provides the building with an appropriate level of rigidity and enables an optimum reinforcing effect.
It has been used as a seismic reinforcement for many structures.
However, the double pipe is structurally more complicated than the single pipe, and it is inevitable that the number of manufacturing steps is increased. There are also restrictions on weight reduction.

On the other hand, when the structural member is to be realized by a single pipe, as described at the beginning, a structure that does not cause buckling by using a thick and short member or a connecting member on the steel structure side is used. In order to prevent collapse, it is required to be rigid and the like, but these difficulties must be avoided. A single-pipe type structural member that has achieved such a thing has not yet been proposed, and improvements and new plans thereof are awaited.

That is, a steel pipe brace which is generally used has an intermediate slenderness ratio λ of 50 to 80. For example, a brace with a length of 3,500 mm and an outer diameter d ₂
Is 190.7 mm and the inner diameter d ₁ is 174.7 mm (thickness t
= 8 mm), the secondary radius k of the section is √
^{_{(D 2 2 + d 1 2}} ) / 4 ≒ d m /2√2=182.7/2.
83 = 64.6, and the slenderness ratio λ (= 1 / k) is 3,5.
00 / 64.6 ≒ 54, but even when such an elongated ratio is adopted, it is desired to sufficiently deform the plastic without buckling even after yielding due to the axial force.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a single tube having an elongation ratio λ of 50 to 80, without buckling, and sufficiently after buckling by an axial force. Plastic deformation can be avoided, so that it is possible to avoid rigidity to prevent collapse of the connecting member on the steel structure side, and, of course, that the structure is simplified and manufacturing is facilitated. An object of the present invention is to provide a connected single-pipe type structural member that has been realized.

[0015]

SUMMARY OF THE INVENTION The present invention is applied to a steel pipe structural member such as a brace interposed in a framework of a steel structure for forming a steel structure. The feature is that, with reference to FIG. 1, an iron pipe material 2 having an elongation ratio of 30 or less is cut right and left at a central portion to form end members 2A, 2A on both sides of a structural member 1, A joining device 10 that enables connection to a steel structure via an end member 11 that is fixedly integrated with the steel structure is attached. And the left and right end members 2
Between A and 2A, a steel pipe having the same outer diameter and having a larger compressive strength than the end member is connected in the longitudinal direction as the intermediate member 3A.

The end member 2A is an iron pipe having a low yield point, and the intermediate member 3A may be a plain steel pipe. It is sufficient if the pipe with a low yield point is made of extremely low yield point steel or pure iron.

The intermediate member 3A may be thicker and have a larger cross-sectional area than the end member 2A.

The joining device 10 includes a clevis eye 1 joined to a gusset plate 13 attached to a steel structure side.
2, and the clevis eye may be screwed to the end member 11.

[0019] While a screw 12m _A provided on the base of Kurebisuai screwed to the end member of, the screw 12m _B provided in Kurebisuai screwed to the other end member idea to the reverse helical screws convenient.

Referring to FIG. 7, the joining device 10A includes a screw hole 23a of a node member 23 mounted on the steel structure side.
A joining bolt 21 that is attached to the end member 11M and has an engaging boss 21m that is screwed to the shaft portion and protrudes in the radial direction at a shaft intermediate portion, and a joining bolt that is fitted to the engaging boss and rotates the joining bolt. And a sleeve 22 that can be relatively slidably displaced so that the joint bolt 21 can be advanced into the screw hole 23a of the node member 23 by rotating the sleeve.

As shown in FIG. 8, the joining device may be a rigid fixed structural joint to the gusset plate 33 attached to the steel structure side. For the joint, it is most convenient to adopt a cruciform joint 10B integrated with the high-strength bolt friction joining plate 34.

[0022]

According to the present invention, the actual slenderness ratio of the structural member is an intermediate value which is generally adopted, but the member having a slenderness ratio of substantially 30 or less against buckling. And can be mechanically equivalent. Therefore, even if the slenderness ratio of the entire structural member is 50 to 80, the plastic deformation can be continued without reducing the proof stress even after the end member yields. That is, when the present structural member is adopted as a compression member, large plastic deformation is realized without causing buckling, energy due to an earthquake is efficiently absorbed, and the material is excellent as a seismic reinforcement.

Compared with the double-tube type structural member, the structure is greatly simplified, the weight is reduced, and the production is easy.
The appearance is simplified, and the design of the steel structure is improved. When used as a brace, it is not necessary to make the mounting points on beams etc. excessively strong, and it is possible to give the building a suitable horizontal rigidity in a smart form with a relatively large slenderness ratio. Become.

If the end member is a pipe material having a low yield point and the intermediate member is a plain steel pipe, the intermediate member can have a higher compressive strength than the end member. The pipe material having a low yield point can be easily realized by using extremely low yield point steel or pure iron. On the contrary, the same effect can be exerted even if the intermediate member has a large thickness and a large cross-sectional area as compared with the end member.

If a clevis eye joined to a gusset plate is used as a joining device for connecting a structural member to a steel structure via an end member, only an axial force is easily introduced into the structural member, and unnecessary bending occurs. Can be suppressed. Also, since the clevis eye is screwed to the end member, even if it does not coincide with one of the joining holes in the opposing gusset plate attached to the steel structure side, by changing the screwing amount of the clevis eye,
It is possible to adjust the length of the structural member substantially.

If the screw provided at the base of the clevis eye screwed to one end member and the screw provided at the other clevis eye are formed as reverse spirals, there will be a slight deviation in the inter-joint distance when the pins are joined. Even if it occurs, the distance between the clevis eyes can be adjusted by simply rotating the structural member to match the pin hole on the gusset plate side, and the operation of incorporating the structural member into the steel structure is extremely easy in a stepless manner. Becomes

If the joining device is provided with a joining bolt and a sleeve, the sleeve can be rotated to screw the joining bolt into the screw hole of the node member attached to the steel structure. If the diameter of the screw of the joining bolt is reduced to a value close to the permissible limit, a supporting form similar to pin joining can be obtained, and only an axial force can be introduced into the structural member.

If the joining device is a rigid fixed structural joint with respect to the gusset plate attached to the steel structure side, a large bending moment generated at the portion of the end member having low rigidity can be reduced. Non-axisymmetric local buckling at points can be avoided. Therefore, axially symmetric plastic deformation can be easily realized, and even after the end member yields, large energy due to the earthquake can be absorbed by large plastic shrinkage, and sudden collapse of the building or the like can be prevented.

If the cruciform joint is used to integrate with the high-strength bolt friction bonding plate, the supporting structure of the end member is further strengthened, and the non-axisymmetric local buckling of the end member is surely suppressed. .

[0030]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a connecting type single-pipe type structural member according to the present invention. FIG. 1A shows an example of a steel pipe structural member 1 for a brace or the like interposed in a framework of a steel structure for forming a steel structure, which is an end member 2A on both sides.
And an intermediate member 3A interposed between these end members.

In this structural member, an iron pipe 2 shown in FIG. 1B and having an elongation ratio of 30 or less is cut right and left at a central portion, and between the left and right end members 2A, 2A. As shown in (a), a steel pipe 3 having the same outer diameter and having a larger compressive strength than the end member 2A is connected as an intermediate member in the longitudinal direction by butt welding or the like.
It is one single tube.

The thickness is 8 mm and the outer diameter is 190.7 mm
If the slenderness ratio λ of the single tube is 54 as described in the section of the prior art, the total length of the single tube is 3,500 mm. Therefore,
Assuming that the length of the structural member is 3,500 mm, FIG.
If the slenderness ratio of the pipe material 2 is selected to be, for example, 30 and the wall thickness and the outer diameter are the same, λ × k = 30 × 64.6 =
1,938 ≒ 2,000 mm. Therefore, if this iron pipe is cut at the center to form end members of 1,000 mm each, the length of the intermediate member is selected to be 1,500 mm.

FIG. 1 (a) shows a connected single-pipe type structural member formed on the basis of such calculation. Since the intermediate member 3A has a higher compressive strength than that of the end member 2A, when the both end members yield under the axial compressive force P in a straight state, they deform as shown in FIG. . At this time, since the intermediate member 3A has sufficient strength and rigidity, it hardly deforms and remains substantially linear. Therefore, FIG. 1A is mechanically substantially equivalent to FIG. 1B for buckling.

Incidentally, a steel pipe having an extremely low yield point of the material is used as the end member 2A, and a normal steel pipe is used as the intermediate member 3A. In this case, even if both steel pipes are selected to have the same wall thickness, ordinary steel pipes have higher compressive strength than end members made of extremely low yield point steel or pure iron (σ _y ≒ 1.0 ton / cm ² ). It goes without saying that it grows.

If the slenderness ratio λ of the steel pipe 2 in the state shown in FIG. 1B is 30 or less, it is known that the steel pipe 2 will be deformed without reducing its buckling strength even after plasticization. When a pipe member 2 having a ratio of 30 is applied to the connected single-pipe type structural member 1 shown in FIG. 1A, a large plastic deformation is realized without buckling of the structural member. Such a large deformation results in efficient absorption of energy from the earthquake,
It is an ideal seismic reinforcement.

That is, in a structural member made of only ordinary steel pipe having an elongation ratio λ of 54, even if it can withstand a large axial force P as shown by a broken line M in FIG. However, with the above-mentioned connected single pipe, the yield strength is low as indicated by the solid line N, but even if the amount of shrinkage deformation δ increases, the yield strength can be maintained long after the yield.

FIG. 4 is an example of the result of analyzing the load and the amount of axial deformation when the axial compressive force P is applied to the connected single-pipe type structural member 1 of FIG. 1A by the finite element method. is there. From this, it can be seen that the single tube yields with an axial force of 45 tons, but after that the two end members have a yield strength of over 40 tons while shrinking as much as 25 mm. That is, a 3,500 mm single tube having an elongation ratio λ of 54 is 2
It exerts the effect of absorbing large energy while maintaining the proof stress exceeding 40 tons until it shrinks by 5 mm.

As can be seen from the above description, the intermediate member 3
Since it is sufficient that A has a higher compressive strength than the end member 2A, when steel pipes of the same material are adopted, the thickness t _3A of the intermediate member is changed to the thickness t _{2A of the} end member as shown in FIG. Therefore, it is only necessary to have a large sectional area. In any case, the reason why the outer diameters are made equal is that consideration is given to simplifying the external appearance as a brace material and the like and also exhibiting functional beauty.

By the way, the connection type single tube type structural member 1 includes:
As shown in FIG. 1, a joining device 10 for attaching the tip to the steel structure side is provided. Therefore, the end member 2A
An end member 11 is fixedly integrated with the tip of the base member by welding or the like. It goes without saying that the outer diameter of the end member is the same as that of the end member 2A.

FIG. 5 is an enlarged view of the tip portion of the structural member, and a clevis eye 12 is employed as a joining device. As shown in FIG. 6, the clevis eye is pin-joined to a gusset plate 13 attached to the steel structure side, and has a structure that is screwed to the end member 11.

Although not shown, the left and right clevis eyes 12
A and 12B may be fixed to the end members 11A and 11B. However, as shown in FIG.
It is good to screw it into the short screw hole 14 extending in the axial direction provided in 1. If such a support method using the clevis eyes with the pins 15 (see FIG. 6) is adopted, only the axial force is ideally introduced from the steel structure to the structural member 1, and unnecessary bending occurs. Can be avoided.

[0042] Incidentally, any Kurebisuai also screw provided 12m _A, 12m _B when to keep the same direction of the spiral to the half of one thread pitch the overall length of the structural member 1 when brought into a semi-rotating Kurebisuai Can be changed at a time.

However, the screw 12m provided at the base of the clevis eye 12A screwed to the one end member 11A
And an _A for example right-hand thread, who screws 12m _B provided in Kurebisuai 12B screwed to the other end member 11B keep the reverse helical become left-handed screw is convenient.

By doing so, the clevis eye 12
The operation of adjusting the distance between the pin holes for connecting and supporting the A and 12B can be realized by a stepless operation of a turnbuckle type that only rotates the structural member 1, and the assembling operation is facilitated. Also,
Depending on the amount of screwing, pretension can be applied to the inner tube.

By the way, the following structure can be used instead of the above-mentioned joining device. As shown in FIG. 7, the screw-type joining device 10A includes a joining bolt 21 and a sleeve 22, and is disclosed in JP-A-62-55347, JP-A-63-51539 and JP-A-63-51539. 180
Some known bonding apparatuses described in Japanese Patent Application Publication No. 03-2003 and the like. Briefly, the joining bolt 21 is screwed into the screw hole 23a of the node member 23 attached to the steel structure side, and has an engaging boss 21m protruding in the radial direction at the shaft intermediate portion. And the opposite side is the end member 11
Attach to M.

The sleeve 22 is fitted so as to cover the engaging boss 21m, and has a polygonal cross section so that the outer surface can be rotated by a spanner or the like. And, it has an angular through hole 22a for engagement so that the joining bolt 21 can be rotated and slidably displaced relatively thereto. If this sleeve 22 is rotated, the joining bolt 21
Is advanced toward the screw hole 23a of the node member 23, and the joining operation is completed when the sleeve 22 comes into close contact with the end member 11M and the node member 23.

In the case of the screw-type joining device 10A, if the diameter of the joining bolt 21 is designed to be as small as possible, it is possible to mechanically approach the pin joining state similarly to the case of the clevis eye. Become. Therefore, only the axial force is introduced into the structural member.

FIG. 8 is a longitudinal sectional view of an example in which a cruciform joint is provided at the end of the structural member 1 as a joining device 10B. The structural member is a pipe material as described above, and the cross joint 10
The connecting member 31 is integrated with the end member 2A by butt welding or press-fitting butt welding. This connecting material is, for example, a forged product having a cylindrical portion 31A as shown in FIG. 9 and a joining side 31B having a cross shape at its end face.

The cruciform joint is well known,
A cross plate 32 indicated by a two-dot chain line is groove-butt welded to the connecting member 31. Gusset plate 3 shown in FIG.
3 and a joint plate 32a on the same surface as the gusset plate of the cross plate 32 are sandwiched by high-strength bolt friction bonding plates 34, 34 each serving as one of the front and back sides, and several high-strength bolts 35 Is concluded by In addition, the joining plate 3 welded to be perpendicular to the gusset plate 33
The joint plate 6 and the joint plate 32b on the same plane are joined by the high-strength bolt friction joining plates 34, 34.

The eight high-strength bolt friction bonding plates 3
According to the non-pin joint type rigid fixed structural joint according to No. 4, even when the axial compressive force P is applied, no inclination occurs at the support portions at both ends, and the elastic line of the structural member is fixed to the original axis at the fixed position. Can be matched. Therefore, there is almost no bending of the end member 2A when the axial compression force is introduced through the cross joint. As a result, although not illustrated, the absolute value of the bending moment acting on the structural member is smaller than that of the pin support structure. Therefore, occurrence of non-axisymmetric local buckling at the end member is avoided, and axisymmetric plastic deformation capable of sufficiently absorbing seismic energy can be promoted.

Although such a structural member can be used for a beam or the like, it is suitable for use in a brace interposed in the steel structure. According to the connection type single-pipe type structural member as in this example, the structure becomes a single-pipe type structural member having a simplified structure. The simplification can be achieved and the production cost can be reduced.

In any case, even if the actual slenderness ratio of the structural member is intermediate, it is substantially 3 against buckling.
It can be mechanically equivalent to a member having a slenderness ratio of 0 or less. Therefore, even if the slenderness ratio of the whole connected single-pipe type structural member is 50 to 80, plastic deformation can be continued without reducing the proof stress even after the end member yields. Large plastic deformation is realized without buckling, energy is efficiently absorbed by the earthquake, and it becomes an excellent seismic retrofitting material. Can be given an appropriate level of horizontal rigidity.

[Brief description of the drawings]

FIG. 1 shows a connection type single tube type structural member according to the present invention,
(A) is a longitudinal sectional view thereof, and (b) is a longitudinal sectional view of a structural member having a small slenderness ratio substantially equivalent to (a) from the buckling aspect.

FIG. 2 is a longitudinal cross-sectional view of a connected single-pipe type structural member when an axial compressive force is applied.

FIG. 3 is a graph showing a change in the amount of shrinkage deformation with respect to an axial force for a single pipe structural member and a connection type single pipe type structural member.

FIG. 4 is a graph illustrating an example in which a load and an axial deformation when a compressive force is applied to a connection type single pipe type structural member are analyzed by a finite element method.

FIG. 5 is a longitudinal sectional view of a connection type single pipe type structural member when a clevis eye is employed as a joining device attached to an end member.

6 is a view taken in the direction of arrow VI in FIG. 5;

FIG. 7 is an end sectional view of a connection type single pipe type structural member employing a joining device including a joining bolt and a sleeve.

FIG. 8 is an external appearance view of a partially broken end of a connection type single pipe type structural member when a rigid fixed structural joint is employed as a joining device.

FIG. 9 is an end perspective view when a cruciform joint integrated with a high-strength bolt friction bonding plate is used.

FIG. 10 is a front view showing a state in which braces are interposed in the steel structure.

FIG. 11 is an explanatory view of deformation of a steel structure with respect to a pair of braces in one grid.

[Explanation of symbols]

1: steel pipe structural member, 2: iron pipe material, 2A: end member,
3 ... steel pipe, 3A ... intermediate member, 10 ... joining device, 10A ...
Screw-type joining device, 10B ... joining device (cruciform joint),
11, 11A, 11B, 11M: End member, 12, 1
2A, 12B ... Kurebisuai, 12m _A, 12m _B ... Kurebisuai screws 13 ... gusset plate, 21 ... fastening bolt, 21m ... Kakarigoyo boss, 22 ... sleeve, 2
3 ... node member, 23a ... screw hole, 33 ... gusset plate, 34 ... high strength bolt friction bonding plate, P ... axial force, _t2A ...
End member thickness, t _3A ... thickness of intermediate member.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Katsuhiko Imai 3-4-8 Miyayamacho, Toyonaka-shi, Osaka F-term (reference) 2E125 AA04 AA14 AA33 AC16 BB08 BB10 BB24 BC09 BD01 BE08 BF01 CA05 CA06 CA14 CA79 CA90 EA25 2E163 DA01 FB09 FB46 FB49

Claims (9)

[Claims] 1. A steel pipe structural member for a brace or the like interposed in a framework of a steel structure for forming a steel structure, wherein an iron pipe material having a slenderness ratio of 30 or less is cut right and left at a central portion. A joining device is formed which forms end members on both sides of the end member and enables connection to a steel structure via an end member which is fixedly integrated at the tip thereof. The same outer diameter is provided between the left and right end members. And a steel pipe having a greater compressive strength than the end member is connected in the longitudinal direction as an intermediate member. 2. The connection type single pipe type structural member according to claim 1, wherein said end member is an iron pipe having a low yield point, and said intermediate member is a normal steel pipe. 3. The connection type single pipe type structural member according to claim 2, wherein the pipe having a low yield point is made of ultra-low yield point steel or pure iron. 4. The intermediate member has a large thickness and a large cross-sectional area as compared with the end member.
2. The connection type single pipe type structural member described in 1. above. 5. The clevis eye to be joined to a gusset plate attached to a steel structure side, wherein the clevis eye is screwed to the end member. 5. The connected single-pipe type structural member according to any one of 4. 6. A screw provided at a base of a clevis eye screwed to one end member is a screw having a direction opposite to a screw provided at a clevis eye screwed to the other end member. The connection type single pipe type structural member according to claim 5, characterized in that: 7. The joining device is provided with an engaging boss that is screwed into a screw hole of a node member attached to the steel structure side and protrudes radially at an intermediate portion of the shaft portion, and is attached to the end member. A joining bolt, and a sleeve that is fitted to the engaging boss portion and that can be displaced in sliding contact with the joining bolt while rotating the joining bolt. The joining bolt is rotated by rotating the sleeve. The connection type single pipe type structural member according to any one of claims 1 to 4, wherein the connection type single pipe type structural member is configured to be able to advance into a screw hole of the node member. 8. The joint device according to claim 1, wherein the joining device is a rigid fixed structural joint with respect to a gusset plate attached to the steel structure side. The described connected single-pipe type structural member. 9. The connection type single pipe type structural member according to claim 8, wherein the rigid fixed structural joint is a cruciform joint integrated with a high strength bolt friction joining plate.