CN211369747U - K-shaped intersecting joint structure of steel pipe tower plane - Google Patents
K-shaped intersecting joint structure of steel pipe tower plane Download PDFInfo
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- CN211369747U CN211369747U CN201921896411.8U CN201921896411U CN211369747U CN 211369747 U CN211369747 U CN 211369747U CN 201921896411 U CN201921896411 U CN 201921896411U CN 211369747 U CN211369747 U CN 211369747U
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Abstract
The planar K-shaped intersecting node structure of the steel pipe tower mainly comprises a main pipe, and a first branch pipe and a second branch pipe welded on the main pipe, wherein the main pipe, the first branch pipe and the second branch pipe are arranged in a K shape; the main pipe saddle plate is a fan-shaped plate, and the main pipe saddle plate is axially welded on the outer edge of the main pipe body; the branch pipe annular plate is an annular plate, and the branch pipe annular plate is respectively welded on the outer edges of the pipe bodies of the first branch pipe and the second branch pipe in the corresponding axial direction.
Description
Technical Field
The utility model relates to a steel construction node form, concretely relates to steel-pipe tower plane K type looks node structure that intersects.
Background
The existing K-shaped intersecting nodes on the plane of the steel tube tower are connected in a mode of directly welding steel tubes, and the main defect of the node connection mode is that the bearing capacity of the nodes is small, and the requirement of high bearing capacity of a large-span power transmission line tower is difficult to meet. In addition, only local welding connection exists between the main pipe and the branch pipe, so that stress concentration is easily generated on the local part of the main pipe, and the intersecting welding seam is easily damaged. And branch pipes are not connected, the integrity of a node is not strong, and a single branch pipe is easy to deflect in a plane, so that the branch pipes are unstable.
Disclosure of Invention
The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, provide one kind and can effectively improve the bearing capacity of above-mentioned K type node, improve the steel-pipe tower plane K type looks through node structure of stress concentration and the poor scheduling problem of wholeness.
The utility model aims at accomplishing through following technical scheme, a steel-pipe tower plane K type looks node structure that intersects, mainly including being responsible for and the welding first branch pipe and the second branch pipe on being responsible for, just be responsible for, first branch pipe and second branch pipe and be K-shaped setting, the axial is provided with the branch pipe crown plate respectively in the body outer fringe of first branch pipe and second branch pipe, be responsible for and be provided with the saddle plate of being responsible for in the position axial that corresponds the branch pipe crown plate, the branch pipe crown plate on first branch pipe and the second branch pipe respectively with be responsible for on corresponding one side be responsible for saddle plate fixed connection, branch pipe crown plate on the first branch pipe passes through the branch pipe crown plate fixed connection on node plate and the second branch pipe.
Furthermore, the main pipe saddle plate is a fan-shaped plate, and the main pipe saddle plate is axially welded on the outer edge of the main pipe body; the branch pipe annular plate is an annular plate, and the branch pipe annular plate is respectively welded on the outer edges of the pipe bodies of the first branch pipe and the second branch pipe in the corresponding axial direction.
Furthermore, the axes of the first branch pipe and the second branch pipe intersect with the axis of the main pipe at a point, and the included angles between the axis of the main pipe and the axes of the first branch pipe and the second branch pipe are both 30-90 degrees.
The utility model has the advantages of: due to the existence of the main pipe saddle plate, the bearing capacity of the node is improved, and the design of a large-span power transmission line tower with higher bearing capacity is facilitated; meanwhile, the load from the branch pipe is dispersed to the saddle plates at the two ends through the node plates, so that the load borne by the direct welding part of the branch pipe and the main pipe is reduced, the integral stress of the main pipe is more uniform, and the stress concentration phenomenon can be effectively reduced; in addition, the branch pipes are connected through the node plates, so that the branch pipes are not easy to lose stability, and the branch pipes are connected with the ring plates, so that the branch pipes can be prevented from being damaged due to excessive local deformation. The calculation formula obtained by the test and the finite element technology is safe, reliable and accurate, and is convenient for engineering design.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the saddle plate of the main pipe according to the present invention;
fig. 3 is a schematic structural diagram of a branch pipe annular plate according to the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1-3, a steel-pipe tower plane K type looks node structure that intersects, mainly including being responsible for 1 and the welding first branch pipe 2 and the second branch pipe 3 on being responsible for 1, just be responsible for 1, first branch pipe 2 and second branch pipe 3 and be the setting of K shape, the axial is provided with branch pipe crown plate 4 respectively in the body outer fringe of first branch pipe 2 and second branch pipe 3, be responsible for 1 and go up to be provided with corresponding to the position axial of branch pipe crown plate 4 and be responsible for saddle plate 5, branch pipe crown plate 4 on first branch pipe 2 and the second branch pipe 3 respectively with be responsible for saddle plate 5 fixed connection of one side on being responsible for 1, branch pipe crown plate 4 on first branch pipe 2 passes through node plate 6 and branch pipe crown plate 4 fixed connection on the second branch pipe 3.
Referring to fig. 1-3, the main pipe saddle plate is a fan-shaped plate, and the main pipe saddle plate is axially welded on the outer edge of the main pipe body; the branch pipe annular plate is an annular plate, and the branch pipe annular plate is respectively welded on the outer edges of the pipe bodies of the first branch pipe and the second branch pipe in the corresponding axial direction. The axes of the first branch pipe and the second branch pipe are intersected with the axis of the main pipe at one point, and included angles between the axis of the main pipe and the axes of the first branch pipe and the second branch pipe are 30-90 degrees.
The utility model discloses an it puts more energy into respectively on the branch pipe that runs through the node mutually in traditional steel-pipe tower plane K type and being responsible for to adopt the gusset to connect being responsible for, branch pipe and stiffening plate, thereby improve the bearing capacity of above-mentioned K type node, improve stress concentration and the poor problem of wholeness. The stiffening plate of the main pipe is a saddle plate of the main pipe, the stiffening plates of the two branch pipes are branch pipe ring plates, and the size of the stiffening plates is determined according to the load on the node branch pipes and the formula
Is designed in which
Calculating the bearing capacity of the pressed branch pipe at the pipe node according to the common intersecting node for the design value of the bearing capacity of the K-shaped intersecting node without the stiffening rib corresponding to the planar K-shaped intersecting node of the multi-stiffening rib steel pipe tower,
the specific calculation formula is the design value of the bearing capacity of the stiffening component of the planar K-shaped intersecting joint of the steel pipe tower with multiple stiffening ribs
Wherein Mu is the calculation of the bearing capacity of the saddle plate according to the joint of the joint plate and the steel pipe, D is the outer diameter of the main pipe,
is the included angle formed by the axial line of the pressure branch pipe and the axial line of the main pipe,
is a tension branch shaftThe line forms an angle with the main pipe axis.
When the size of each component of the planar K-shaped intersecting joint of the steel pipe tower with the multiple stiffening ribs is determined, the approximate joint size is determined according to engineering experience, then the approximate joint size is substituted into the formula for checking calculation, and if the calculated joint bearing capacity is larger than the load of a test piece, the size of the test piece is reduced; and if the calculated bearing capacity of the node is smaller than the load borne by the test piece, the size of the test piece is increased, and after repeated trial calculation, the final size of the test piece can be determined within the tolerance range allowed by the engineering. When the size of the test piece is determined, the size of a saddle plate of the main pipe is determined firstly, and then the size of a ring plate of the branch pipe is determined according to the design value of the bearing capacity of the ring plate of the branch pipe not less than 1.5Mu/B, wherein B is the distance between the two saddle plates of the main pipe.
The method for obtaining the bearing capacity calculation formula of the K-shaped intersecting joint of the steel pipe tower plane with the multiple stiffening ribs comprises the following steps:
1) designing a plurality of planar K-shaped intersecting nodes of the multi-stiffening rib steel pipe tower with different sizes commonly used in actual engineering, and carrying out a bearing capacity static load test to obtain corresponding test data, including data such as a load displacement curve, bearing capacity and the like;
2) simulating the planar K-shaped intersecting node of the steel pipe tower with the multiple stiffening ribs by adopting a nonlinear finite element technology, and verifying the finite element model by using the obtained test data to ensure the reliability of the finite element model;
3) designing a series of finite element models of the planar K-shaped intersecting nodes of the multi-stiffening rib steel pipe tower with different sizes, and obtaining a large amount of bearing capacity data of common sizes in the engineering field through finite element numerical calculation;
4) and obtaining a bearing capacity calculation formula of the planar K-shaped intersecting node of the multi-stiffening rib steel pipe tower by adopting a multivariate fitting technology according to a least square method.
Due to the existence of the main pipe saddle plate, the bearing capacity of the node is improved, and the design of a large-span power transmission line tower with higher bearing capacity is facilitated; meanwhile, the load from the branch pipe is dispersed to the saddle plates at the two ends through the node plates, so that the load borne by the direct welding part of the branch pipe and the main pipe is reduced, the integral stress of the main pipe is more uniform, and the stress concentration phenomenon can be effectively reduced; in addition, the branch pipes are connected through the node plates, so that the branch pipes are not easy to lose stability, and the branch pipes are connected with the ring plates, so that the branch pipes can be prevented from being damaged due to excessive local deformation. The calculation formula obtained by the test and the finite element technology is safe, reliable and accurate, and is convenient for engineering design.
The specific embodiments described herein are merely illustrative of the principles of the present invention and its efficacy, and are not intended to limit the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical idea of the present invention shall be covered by the claims of the present invention.
Claims (3)
1. Steel-pipe tower plane K type looks node structure that intersects mainly includes and is responsible for and welds first branch pipe and the second branch pipe in being responsible for, just be responsible for, first branch pipe and second branch pipe and be K shape setting, its characterized in that: the pipe body outer edges of the first branch pipe and the second branch pipe are respectively and axially provided with a branch pipe annular plate, the position of the main pipe corresponding to the branch pipe annular plate is axially provided with a main pipe saddle plate, the branch pipe annular plates on the first branch pipe and the second branch pipe are respectively and fixedly connected with the main pipe saddle plate on the corresponding side of the main pipe, and the branch pipe annular plate on the first branch pipe is fixedly connected with the branch pipe annular plate on the second branch pipe through a node plate.
2. The planar K-shaped intersecting joint structure of the steel tube tower as claimed in claim 1, wherein: the main pipe saddle plate is a fan-shaped plate, and the main pipe saddle plate is axially welded on the outer edge of the main pipe body; the branch pipe annular plate is an annular plate, and the branch pipe annular plate is respectively welded on the outer edges of the pipe bodies of the first branch pipe and the second branch pipe in the corresponding axial direction.
3. The planar K-shaped intersecting joint structure of the steel tube tower as claimed in claim 1 or 2, wherein: the axes of the first branch pipe and the second branch pipe are intersected with the axis of the main pipe at one point, and included angles between the axis of the main pipe and the axes of the first branch pipe and the second branch pipe are 30-90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921896411.8U CN211369747U (en) | 2019-11-06 | 2019-11-06 | K-shaped intersecting joint structure of steel pipe tower plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921896411.8U CN211369747U (en) | 2019-11-06 | 2019-11-06 | K-shaped intersecting joint structure of steel pipe tower plane |
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| CN211369747U true CN211369747U (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921896411.8U Expired - Fee Related CN211369747U (en) | 2019-11-06 | 2019-11-06 | K-shaped intersecting joint structure of steel pipe tower plane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847680A (en) * | 2019-11-06 | 2020-02-28 | 国网浙江省电力有限公司 | Steel pipe tower plane K type intersecting node structure |
| RU2806391C1 (en) * | 2023-05-24 | 2023-10-31 | Александр Суренович Марутян | Triangular lattice pole with d-pipe belts |
-
2019
- 2019-11-06 CN CN201921896411.8U patent/CN211369747U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847680A (en) * | 2019-11-06 | 2020-02-28 | 国网浙江省电力有限公司 | Steel pipe tower plane K type intersecting node structure |
| RU2806391C1 (en) * | 2023-05-24 | 2023-10-31 | Александр Суренович Марутян | Triangular lattice pole with d-pipe belts |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200828 Termination date: 20211106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |