KR101256983B1

KR101256983B1 - Structure of Truss joint

Info

Publication number: KR101256983B1
Application number: KR1020100041640A
Authority: KR
Inventors: 김성원
Original assignee: 김성원
Priority date: 2010-05-04
Filing date: 2010-05-04
Publication date: 2013-04-19
Also published as: KR20110122254A

Abstract

The present invention relates to a truss junction structure, in the truss junction structure, a plurality of steel pipes, and provided in a position where the steel pipes are assembled to be joined to the end of each steel pipe by mutual welding, sphere, cylinder or polygonal column It consists of a joint formed by molding to be any one of the forms, the spherical joint is formed in the form of the upper and lower side is cut in the horizontal direction to reduce the weight, the inner portion of the junction is formed in the upper and lower portions of a predetermined depth Or a through hole penetrating it, and the inner groove or the through hole further includes a reinforcing member crossing the inner side, so that the steel pipe is easily joined to the joint to improve the strength of the truss structure. It relates to a joining part for.

Description

Structure of Truss joint

The present invention relates to a joint structure for trusses, and more particularly, to provide a structure in which the steel pipe or lug is welded by a casting method or the like to provide a structure in which the steel pipe or lug can be easily in close contact with the strength of the entire truss structure It is related with the structure of the joint part for trusses which improves stability.

Typically, trusses are structures formed in a lattice shape by arranging steel pipes to cross each other over a large space, such as a roof of a bridge or a dome.

In addition, in order to manufacture a large truss structure, a plurality of truss joints are required so that a plurality of steel pipes can be interconnected. As a method of manufacturing the truss joint structure, the second steel pipe joint members are sequentially welded to the outer surface of the first steel pipe joint member.

1 shows a conventional truss junction structure, as shown in the figure, the truss junction structure is composed of a first steel pipe joint member 10 and a second steel pipe joint member 20, the first The steel pipe joining member 10 is formed by processing the cross section of the second steel pipe joining members 20 to conform to the outer surface shape, and is closely connected by welding.

However, in the case of a truss joint structure manufactured by welding joint as in the prior art, the first steel pipe joining member 10 does not penetrate the manufacturing process, and even in the case of penetrating through the welding environment is often poor It requires a high skill of the joint, a large residual stress occurs at the joint, the member strength is lowered by the influence of welding heat, and the stress concentration phenomenon due to the sharp angled joining of the thin member occurs, resulting in a weak structural strength. As a result, there was a problem that the overall strength of the truss structure is lowered.

In particular, the conventional truss joint structure is very fragile even in view of material fatigue with time.

In addition, in order to configure the truss structure, the second steel pipe connecting member is inclined welded to the first steel pipe connecting member to form a joint, wherein the cross-sectional shape of the second steel pipe connecting member corresponding to the outer shape of the first steel pipe connecting member. In the case of welding, the inclination angle is shifted so that the entire cross section is not uniformly adhered, which makes the welding work difficult.

The present invention has been made to solve the above problems, in the truss joint structure formed by joining the steel pipe and steel pipe or steel pipe and lugs to each other by welding, provided with a joint at the position where the steel pipe is coupled Then, by joining the steel pipe to the outer surface of the joint portion by welding or the like to make a stable truss structure, to minimize the residual stress and thermal effects due to welding, increase the strength of the joint portion at the same time to prevent the stress concentration occurs It is an object of the present invention to provide a joint structure for trusses with improved structural stability.

In order to achieve the above object, the present invention is a joint structure for a truss, a plurality of steel pipes; The steel pipes are provided at a location where the steel pipes are assembled to be joined to each other by the end welding of each steel pipe, and formed into a joint formed by forming any one of a sphere, a cylinder, and a polygonal column; For the upper and lower sides are cut in a horizontal direction, the junction portion is formed in the upper and lower inner grooves of a predetermined depth, or through holes are formed therethrough, the inner groove or through holes are reinforced to cross the inside A member is further provided.

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The reinforcing member is characterized in that the form protrudes to the outside of the junction.

The reinforcing member is characterized in that the recessed into the interior.

In addition, the joint portion, characterized in that the steel pipe joint is further provided to protrude to be coupled to the ends of the respective steel pipes.

Here, the steel pipe joint, characterized in that the groove of a predetermined depth is formed in the cross section.

Finally, the junction portion is characterized in that the lug is further provided.

According to the present invention having the above-described configuration, the following effects can be expected.

First, instead of the existing joining method of joining the adjacent steel pipes by overlapping welding or the like, a joint part having an outer surface of a spherical shape is provided at a position where the steel pipes are gathered, and then joining the joint part and the steel pipes by welding or the like. The joint structure for the truss will be formed. As a result, it is easy to work in a narrow space, minimizes residual stress and heat effect due to overlap welding generated when joining steel pipes, stress concentration does not occur, and increases the strength of the joint to improve the stability of the truss structure. It can be improved.

In addition, there is no need to perform a separate machining operation on the cross-section of the steel pipes to be joined, and the welding surface of the steel pipes to be joined to the joint is constant, so that uniform quality is obtained.

1 is a perspective view of a joint structure for a truss according to the prior art.
Figure 2 (a) is a perspective view of the joint structure for the truss according to the preferred embodiment of the present invention.
Figure 2 (b) is a perspective view of a truss junction structure according to another preferred embodiment of the present invention.
Figure 2 (b) is a perspective view of a truss junction structure according to another preferred embodiment of the present invention.
Figure 3 is an illustration of the junction part structure for the truss of the upper and lower sides cut in Figure 2 (a).
Figure 4 is an illustration of the junction structure for the truss grooved in FIG.
Figure 5 is an illustration of the junction structure for the truss through holes formed in Figure 3;
Figure 6 (a) is an illustration of the junction structure for the truss further provided with a reinforcing member in the through hole in FIG.
Figure 6 (b) is an illustration of the junction structure for the truss protruding the reinforcing member of Figure 6 (a).
Figure 6 (c) is an illustration of the junction structure for the truss in which the reinforcing member of Figure 6 (a) is recessed.
Figure 7 is an illustration of a joint structure for trusses further provided with a steel pipe joint in Figure 3;
Figure 8 is an illustration of the junction structure for the truss further provided with a lug in FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Figure 2 (a) shows a perspective view of a truss junction structure according to a preferred embodiment of the present invention.

As shown, the present invention is largely made of a steel pipe 100 and the junction portion 200.

First, the steel pipe 100 is to form a truss structure is provided with a plurality.

In addition, the joint part 200 is provided at a position where the steel pipes 100 are assembled to be cast to have a spherical shape to be coupled to each end of each of the steel pipes 100.

Here, the present invention, unlike the prior art in which the joint structure for the truss is formed by a method such as overlap welding between adjacent steel pipes by separately casting the spherical portion 200 in a spherical shape, the end and the sphere of the steel pipe 100 It is possible to be in close contact with the junction portion 200 having a shape without a separate processing operation.

In addition, the spherical joint portion 200 has an advantage that the end portion of the steel pipe 100 is in close contact with the junction portion 200 in any direction, it is possible to easily produce an arch-shaped truss structure.

On the other hand, in Fig. 2 (a), although the junction portion 200 is limited to a spherical shape according to a preferred embodiment, when the spherical shape is difficult, the junction portion 200 as shown in Fig. 2 (b), Fig. 2 (c) Of course, it can be carried out by casting molding to form any one of a cylinder or a polygonal pillar.

Referring to FIG. 2 (b), the joint part 200 is formed into a cylinder, and the steel pipe 100 is coupled to the side surface thereof.

Here, the steel pipe 100 requires a separate processing depending on the outer shape of the joint portion 200 is a cylinder, there is an advantage that the steel pipe 100 can be combined into a plurality.

Next, referring to FIG. 2 (c), the junction part 200 may be in the form of a hexagonal column, which is one of polygonal pillars, so that the steel pipe 100 may be easily coupled to the side surface.

In addition, the spherical joint 200 shown in FIG. 2 (a) is formed such that the upper and lower sides of the joint 200 are cut in the horizontal direction as shown in FIG. 3 in order to reduce weight and reduce material. It is desirable to.

4, 5, 6 (a, b, c), and 7 and 8 are exemplary views of various implementations of the junction part 200, the upper and lower sides of the junction part 200 shown in FIG. With reference to the shape cut | disconnected in the direction, it demonstrates focusing on the added matter.

In the following embodiment, the junction part 200 is applied to both a sphere, a cylinder, and a polygonal column, but for convenience, the upper and lower sides will be applied only to the junction part 200 cut in the horizontal direction.

Referring to FIG. 4, the junction part 200 may have an inner groove 220 having a predetermined depth at upper and lower portions thereof, or a through hole 240 penetrating the upper and lower portions as shown in FIG. 5 to reduce weight and reduce materials. do.

In FIG. 6 (a), the through hole 240 formed in FIG. 5 is further provided with a reinforcing member 300 intersecting the inner side, so that the strength of the junction 200 in which the through hole 240 is formed can be reinforced. do.

6 (b) and 6 (c) are variously performed by changing the shape of the reinforcing member 300.

Referring to Figure 6 (b), the reinforcing member 300 is characterized in that the form protruding to the outside of the bonding portion 200 can be utilized as a joinable member.

Referring to Figure 6 (c), the reinforcing member 300 can be reduced in weight, characterized in that the recessed into the interior of the junction portion (200).

Here, the reinforcing member 300 is preferably molded integrally with the junction portion 200.

Of course, also in Figure 4, the inner groove 220 formed in the bonding portion 200 may be provided with a reinforcing member 300 to traverse the inside.

In addition, the reinforcing member 300 formed inside the joining part 200 may protrude to the upper and lower parts of the joining part 200 to combine various members, or to be formed inside the upper and lower parts of the joining part 200. It is also desirable to be able to reduce the weight.

On the other hand, the inner groove 220 or the through hole 240 may be implemented by forming a plurality of upper and lower portions of the junction portion 200, respectively, which should be considered rigidity and weight.

Referring to FIG. 7, the joint part 200 may further include a steel pipe joint part 400 protruding to be coupled to end portions of the respective steel pipes 100.

Here, the steel pipe joint portion 400, the groove 420 of a predetermined depth is formed in the cross-section is possible to reduce the weight and material saving.

In addition, the interface between the steel pipe joint 400 and the joint 200 may be cast into a curved surface to avoid stress concentration.

In FIG. 7, the steel pipe joint 400 is formed to correspond to the shape of the steel pipe 100, but the end of the steel pipe joint 400 may be spherical, like the joint 200, which is spherical. It is also a preferred method to be able to engage in any orientation.

In addition, as shown in Figure 8, the junction portion 200, the lug 500 is further characterized in that it can be carried out by coupling the tension member and bolt or pin at the construction site.

Here, the elements in which the inner groove 220, the through hole 240, the reinforcing member 300, the steel pipe joint 400, or the lug 500 are added to the junction 200 as described above are not limited to the drawings. The combination 200 can be implemented in various ways.

For example, both the steel pipe joint 400 and the lug 500 are provided in the joint 200 and a through hole 240 penetrating the upper and lower portions of the joint 200 is formed.

As described above, it can be seen that the present invention has a basic technical idea to provide a truss connection structure having improved strength and stability by casting molding a joint that can more easily join a steel pipe. Of course, many other variations are possible to those of ordinary skill in the art within the scope of the basic idea.

100: steel pipe 200: joint
220: inner groove 240: through hole
300: reinforcing member 400: steel pipe joint
420: home 500: rug

Claims

In the junction structure for truss,
A plurality of steel pipes 100; The steel pipes are provided at a location where the steel pipes are assembled to be joined to each other by the end of each of the steel pipes, the joint portion 200 is cast to form any one of a sphere, a cylinder or a polygonal column; Bonding portion 200 is a form in which the upper and lower sides are cut in the horizontal direction to reduce the weight,
The junction portion 200 has an inner groove 220 of a predetermined depth is formed in the upper and lower portions, or a through hole 240 penetrating therethrough, and the inner groove 220 or the through hole 240 is reinforced to cross the inside. Truss connection structure for a truss, characterized in that the member 300 is further provided.

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The method of claim 1,
The reinforcement member 300,
Truss connection structure for the truss, characterized in that the protruding to the outside of the junction (200).

The method of claim 1,
The reinforcement member 300,
Truss connection structure for the truss, characterized in that the recessed in the interior of the junction portion (200).

The method of claim 1,
In the junction portion 200,
Truss connection structure for the truss, characterized in that the steel pipe joint portion 400 is further provided to protrude to be coupled to the ends of each steel pipe.

The method of claim 7, wherein
In the steel pipe joint 400,
Truss joining structure for a truss, characterized in that the groove 420 of a predetermined depth is formed in the cross-section.

The method of claim 1,
In the junction portion 200,
Truss junction structure for the truss, characterized in that it is further provided.