JP3404628B2 - Steel tube tower joint structure - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention belongs to a technical field related to a joint structure of a steel pipe supporting steel tower.

[0002]

2. Description of the Related Art Conventionally, as a connecting joint for this kind of main pipe,
A flange joint (tensile bolt joint) as shown in FIGS. 10a and 10b is known. In this joint, a flange 2 is provided at each abutting end portion of the main pipe 1, and the flanges are coupled and connected by using a large number of tension bolts 3.
(For example, refer to Steel Pipe Structure Design and Construction Guidelines / Commentary (Architectural Institute of Japan), 1990, p. 107)

[0003]

Since such a flange joint requires a large number of bolts 3 as shown in the figure, the diameter of the flange 2 must be increased, and therefore, when a steel tower is constructed, a large number of bolts are required. The flange joint of 1) not only spoiled the appearance of the tower remarkably, but also required a lot of labor and time for the construction.

An object of the present invention is to provide a joint structure for a steel pipe tower which can reduce the weight and the wind pressure area of the joint for connecting the main pipes, and can improve the construction workability and aesthetics.

[0005]

Means for Solving the Problems The present invention for solving the problems of the prior art employs the following means for solving.

The above object is to join a main pipe joint in which two connecting steel pipes are cross-coupled in an X shape to each other along the axis of the connecting steel pipes, and to connect the main pipe joints to which the main pipes are joined to each other. Person
Direction, and multiple main pipe fittings are arranged in the circumferential direction.
And a gusset joint for connecting branch pipes in the radial direction are provided, and the branch pipes in the circumferential direction and the radial direction are respectively horizontally connected to the gusset joint, and the main pipe and the branch pipes connected to the both joints
This is achieved by configuring a steel tower having a mesh structure.

The above-mentioned object is, in the joint structure for a steel pipe tower according to claim 1, a main turbine and a branch pipe which are connected to all the main pipe joints and all the gusset joints are welded to the main pipe, the branch pipe, or a turbine or a cross beam. This is achieved by bolting a gusset plate having a rib plate with a splice plate.

[0008]

Embodiments of the present invention will be described in detail with reference to the drawings.

Reference numeral 11 shown in FIG. 1 is a main pipe, 12a is a branch pipe provided in the circumferential direction, and 13 is a steel pipe joint provided with a gusset joint (not shown) for connecting the branch pipe 12a. Structural steel pipe tower joint structure A
Is configured.

The steel pipe joint 13 will be described in detail with reference to FIGS. 1 to 3.

As shown in the drawing, the steel pipe joint 13 has two
Main pipe joint 13b in which a relatively short length of connecting steel pipe 13a is cross-coupled so that the front shape is X-shaped, and the crossing points of the connecting steel pipe 13a are passed vertically and horizontally, and are joined in the circumferential direction. It comprises a branch pipe 12a and a gusset joint 15 for connecting the branch pipes, which is constituted by gusset plates 15a and 15b for connecting the branch pipe 12b connected in the radial direction.

With reference to FIG. 1, an example of a means for connecting the main pipe 11 and the branch pipes 12a and 12b to the steel pipe joint 13 will be described. At the end of the connecting steel pipe 13a of the main pipe joint 13b which constitutes the steel pipe joint 13, slits 13c having a required length are provided at four equal portions along the axial direction thereof. On the other hand, a slit-shaped gusset plate 16 having a rib plate 16a that abuts on the bottom of the slit 13c is integrally formed, and the cross-shaped gusset plate 16 projecting a required length from the end of each connecting steel pipe 13a is inserted. The rib plate 16a inserted into the slit 13c and the connecting steel pipe 13a are fixed by welding means. To the end of the main pipe 11 to be connected to the respective connecting steel pipes 13a gusset plate 16 fixed by welding on the basis of the similar structure, etc. Both the gusset plate 16
In a state where the axis lines of the cattle are abutted with each other, common splice plates 17 are provided on both surfaces between both gusset plates 16, and a large number of bolts 18 are coupled and connected.

2 and 3, the gusset plate 15
The connection structure between the a and 15b and the branch pipes 12a and 12b will be described. At both ends of the branch pipes 12a, 12b coupled to the gusset plates 15a, 15b, slits 12c of required length are provided at four equally divided positions along the axial direction of the branch pipes 12a, 12b, respectively, while the slits 12c are provided at the bottom of the slits 12c. The rib plate 19a for hitting is integrally provided, and the gusset plate 19 having a cross shape protruding from the ends of the branch pipes 12a and 12b by a required length is inserted to separate the rib plate 19a and the branch pipes 12a and 12b inserted into the slit 12a. Secure by welding means. And both gusset plates 19
And the gusset plates 15a and 15b of the gusset joint 15 having a cross structure are abutted so that their axes coincide with each other , and the common splice plate 20 is provided on both surfaces between the two gusset plates, and the two bolts 21 are attached to each other.
To connect to.

A slit 13c is formed at the end of the connecting steel pipe 13a of the main pipe joint 13b constituting the steel pipe joint 13 and the main pipe 11.
The slits 13c are provided with gusset plates 1
Although the rib plate 16a of No. 6 is inserted and welded,
As shown in FIG. 4, the rib plate 16a is connected to the steel pipe 1 for connection.
3a and the inner surface of the main pipe 11 are appropriately fitted, and the gusset plate 16 is connected to each of the connecting steel pipes by welding the outer edge of each rib plate 16a to the connecting steel pipe 13a and the inner wall of the main pipe 11. It is also possible to fix 13a to the main pipe 11. In this embodiment, since it is a condition that the welding robot or the operator puts it in the pipe, the pipe diameter is limited to a larger one, but the finished appearance is that the rib plate 16a is not exposed to the outside. In addition, the aesthetics can be improved. Furthermore, the connecting steel pipe 13
By providing the cutout window 22 in the gusset plate 16 protruding from the main pipe 11, the wind pressure received by the gusset plate 16 is further reduced.

The embodiment shown in FIGS. 5 and 6 shows an example in which the gusset plate 16 is combined in a radial shape, specifically, in a wind turbine shape, and the other structure is the same as the structure shown in FIG. Detailed description is omitted.

The embodiment shown in FIGS. 7 to 9 shows an example in which the gusset plate 16 has a double girder structure, and the rib plate 16a of the gusset plate 16 is connected to the connecting steel pipe 13a and the main pipe 11 as shown in FIG. It is welded and fixed to the inner wall surface. Since other configurations are the same as those in FIG. 4, detailed description will be omitted by assigning the same reference numerals to the same components.

[0017]

As described above, according to the configuration of the present invention,
The following effects can be obtained.

A gusset for connecting only two X-shaped main pipes to a main pipe joint having a steel pipe structure for connection, and to connect main pipe joints with branch pipes in circumferential and diagonal directions, respectively. Since we used a steel pipe joint that was constructed integrally,
Since it is possible to obtain a joint structure for steel pipe towers that reduces the weight of steel pipe joints and reduces the wind pressure surface, and because the joints can be downsized, the construction method of the steel tower can be speeded up and the construction period can be shortened. Gives a novel shape to improve aesthetics.

[Brief description of drawings]

FIG. 1 is a front view of a steel pipe joint portion.

FIG. 2 is a cross-sectional plan view of a steel pipe joint portion.

FIG. 3 is a vertical sectional side view of a steel pipe joint portion.

FIG. 4 is a front view of a main portion of another example of a main pipe joint portion.

FIG. 5 is a plan view showing a water wheel-shaped gusset plate.

FIG. 6 is a plan view showing a rib plate of a water wheel-shaped gusset plate.

FIG. 7 is a front view of an essential part using a double girder gusset plate for the main pipe joint.

FIG. 8 is a plan view of FIG.

9 is a plan view showing the rib plate of FIG. 10. FIG.

10A and 10B are explanatory views showing a conventional joint structure.

[Explanation of symbols]

A Steel pipe tower joint structure 11 main 12a Branch pipe 12b Branch pipe 12c slit 13 Steel pipe fittings 13a Steel pipe for connection 13b Main pipe fitting 13c slit 15 gusset fittings 15a gusset plate 15b gusset plate 16 gusset plate 16a rib plate 17 splice plate 18 volt 19 gusset plate 19a rib plate 20 splice plate 21 bolts 22 Notch window

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takafumi Ito 2-14 Uchisaiwaicho, Chiyoda-ku, Tokyo Toden Design Co., Ltd. (72) Ken Ken Sasajima 2-4-4 Uchisaiwaicho, Chiyoda-ku, Tokyo Toden Design (72) Inventor Kazuyuki Akimoto 118 Futatsuka, Noda City, Chiba Prefecture Kawasaki Heavy Industries, Ltd.Inside the Noda Factory (72) Inventor Tomomi Goto 118 118 Futtsuka, Noda City, Chiba Inside the Noda Factory, Kawasaki Heavy Industries (56) ) Reference JP-A-61-211464 (JP, A) JP-A-8-4125 (JP, A) Actually open 61-37352 (JP, U) Actually open 4-18106 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) E04H 12/10 E04H 12/28 E04B 1/58 503 E04B 1/58 505 E04B 1/58 506

Claims (2)

(57) [Claims] 1. A main pipe joint in which two connecting steel pipes are cross-coupled in an X-shape, each main pipe is joined along an axis of the connecting steel pipes, and the main pipe joint to which the main pipes are joined is circumferentially formed. Along with multiple installations, all main fittings are circumferentially and radially oriented.
The branch pipe is provided a gusset joint for coupling, each coupled horizontally branch pipe in the circumferential direction and the radial direction to said gusset joint, the combined main and branch pipes to the both joints, that constitutes the tower network structure Characteristic steel pipe tower joint structure. 2. The joint structure for a steel pipe tower according to claim 1, wherein the main pipes and branch pipes connected to all the main pipe joints and all the gusset joints are welded to the main pipes and the branch pipes in a turbine or cross beam shape. Gusset plate with rib plate,
A joint structure for steel pipe towers, which is bolted through a splice plate.