CN215926045U - Transmission line shaft tower basis - Google Patents
Transmission line shaft tower basis Download PDFInfo
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- CN215926045U CN215926045U CN202121772958.4U CN202121772958U CN215926045U CN 215926045 U CN215926045 U CN 215926045U CN 202121772958 U CN202121772958 U CN 202121772958U CN 215926045 U CN215926045 U CN 215926045U
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- bottom plate
- baffle
- main column
- tower foundation
- foundation
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Abstract
The utility model relates to a power transmission line tower foundation which comprises a bottom plate, wherein the bottom plate is completely embedded in a soil body, a main column is arranged on the upper surface of the bottom plate and is partially embedded in the soil body, a baffle plate which is connected with the main column into a whole is further arranged on the upper surface of the bottom plate, and the baffle plate can bear an overturning load when being embedded in the soil body.
Description
Technical Field
The utility model relates to the technical field of overhead transmission lines, in particular to a tower foundation of a transmission line.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
At present, the project of the domestic extra-high voltage and extra-high voltage transmission line is continuously developed, more and more transmission tower foundation types are continuously emerged, and the calculation models of other transmission tower foundation types except for the pile foundation and the rock foundation do not consider the balance effect of the lateral passive soil pressure of the foundation on the horizontal force of the foundation. At present, a tower pole foundation of a power transmission tower generally adopts a rigid stepped foundation, but an inventor finds that the foundation is large in concrete consumption and high in cost, and a foundation in the form of a concrete bottom plate and a main column is present at present, but the inventor finds that a power steel pipe pole foundation of a power transmission line mainly bears a larger bending moment, the overturning stability of the foundation plays a decisive control factor, the contact area between the concrete bottom plate and the soil body in the form of the main column is smaller, the overturning resistance is weaker, if the overturning resistance is required to be improved, the sizes of the bottom plate and the main column are required to be increased, the sizes of the main column and the bottom plate are larger, the consumption of a base material and the construction cost cannot be effectively reduced, and the investment cost of an overhead power transmission line cannot be reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a power transmission line tower foundation, which has reasonable stress on the foundation on the premise of meeting the requirement of the bearing capacity of the foundation, saves the using amount of concrete and steel bars to the greatest extent and saves the engineering cost and the manufacturing cost.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the embodiment of the utility model provides a power transmission line tower foundation which comprises a bottom plate, wherein the bottom plate is completely embedded in a soil body, a main column is arranged on the upper surface of the bottom plate and is partially embedded in the soil body, a baffle plate capable of being embedded in the soil body and bearing overturning load is further arranged on the upper surface of the bottom plate, and the baffle plate and the main column are connected into a whole.
Optionally, the baffle is provided in plurality, and the baffles are arranged symmetrically with respect to the axis center of the main column.
Optionally, the baffle is a rectangular plate, and the baffle is perpendicular to the upper surface of the bottom plate.
Optionally, the bottom plate, the main column and the baffle are all of reinforced concrete structure.
Optionally, reinforcing bar interconnect in reinforcing bar and the principal post in the bottom plate, reinforcing bar interconnect in reinforcing bar and the baffle in the principal post.
Optionally, the concrete strength of the bottom plate, the main column and the baffle is not lower than C20.
Optionally, the yield strength of the steel bar materials in the bottom plate, the main column and the baffle is not lower than that of the HPB 300.
Optionally, the bottom plate is connected by the multilayer basic board integral type of upper and lower coaxial setting and is constituted, and in the adjacent two-layer basic board, the cross sectional area that is located the basic board of top is less than the cross sectional area that is located the basic board of below.
Optionally, a connecting piece is embedded in the main column, and the main column can be fixed with the transmission line tower through the connecting piece.
Optionally, the cross section of the main column is square or circular.
The beneficial effects of the utility model are as follows:
1. according to the transmission line tower foundation, the baffle plate connected with the main column into a whole is arranged on the upper surface of the bottom plate, the baffle plate can be embedded into a soil body and can be contacted with the soil body, and the contact area of the whole foundation and the soil body is increased, so that the overturning load borne by the foundation can be borne by the action of the baffle plate and the soil body, the overturning resistance of the whole foundation is improved, the overturning resistance of the foundation can be enhanced without increasing the sizes of the main column and the bottom plate, the use amount of concrete and reinforcing steel bars is saved, and the construction cost is reduced.
2. According to the transmission line tower foundation, the plurality of baffles are symmetrically distributed along the axis center of the main column, so that acting forces of the foundation in multiple directions can be effectively resisted, the eccentric stress of the main column and the base plate is reduced, the sizes of the main column and the base plate of the foundation are reduced, and the external load of the foundation in the horizontal direction is effectively reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a front view of the overall structure of embodiment 1 of the present invention;
FIG. 2 is a plan view of the whole structure of embodiment 1 of the present invention;
wherein, 1, the bottom plate, 2, the main column, 3, the baffle, 4, the soil body.
Detailed Description
Example 1
The utility model provides a transmission line shaft tower basis, includes bottom plate 1, the upper surface central point of bottom plate puts and is provided with king post 2, king post and the coaxial setting of bottom plate, the bottom plate is arranged in whole burying the soil body, the king post is arranged in partly burying the soil body, and the top of king post stretches out to the soil body outside for it is fixed with transmission line shaft tower.
The bottom plate and the main column are both of a reinforced concrete structure, a reinforcement cage and a template are set up in advance during manufacturing, then concrete is poured to form the reinforced concrete main column, and in order to enhance the integrity of the bottom plate and the main column and further enhance the strength of the bottom plate and the main column, the steel bars in the bottom plate and the steel bars in the main column are welded and fixed with each other.
In order to ensure the strength of the whole foundation, the concrete strength grade of the bottom plate and the main column is not lower than C20, and the yield strength of the steel bar material of the bottom plate and the main column is not lower than HPB 300.
The cross section of the bottom plate and the cross section of the main column can be rectangular, square or circular.
In order to reduce the concrete dosage of bottom plate, the bottom plate is connected by the multilayer basic board integral type of upper and lower coaxial setting and is constituted, and in adjacent two-layer foundatin plate portion, the cross section area that is located the basic board portion of top is less than the cross section area that is located the basic board portion of below.
In this embodiment, the bottom plate is composed of an upper base plate portion and a lower base plate portion.
In order to improve the anti-overturning capacity of the whole foundation, the baffle 3 is arranged on the upper surface of the bottom plate, the baffle is a rectangular baffle, and after the baffle is embedded into a soil body, the contact area of the whole foundation and the soil body is increased, and an interaction force can be generated between the baffle and the soil body, so that the anti-overturning capacity of the whole foundation is improved.
The baffle is of a reinforced concrete structure, in order to ensure the strength of the baffle, the concrete strength grade of the baffle is not lower than C20, and the yield strength of the steel bar material of the baffle is not lower than HPB 300.
Furthermore, in order to enhance the connection integrity of the baffle plate, the bottom plate and the main column, the steel bars in the baffle plate and the steel bars in the main column are welded and fixed with each other, and the steel bars in the baffle plate and the steel bars in the bottom plate are welded and fixed with each other.
In order to reduce the eccentric stress of the main column and the bottom plate, the baffle plates are arranged in a plurality, and the baffle plates are arranged in a central symmetry mode relative to the axis of the main column.
In this embodiment, the baffle sets up four, and every side integral type of principal post is connected with a baffle, and four baffles form cross structure, can effectively resist the basis at horizontal and fore-and-aft foundation action power, reduce the eccentric atress of principal post and bottom plate, reduce the size of principal post and bottom plate, effectively reduce the outer load of basis in the horizontal direction, and the baffle bottom surface is connected with the bottom plate integral type and the baffle sets up with the bottom plate is perpendicular, and the baffle sets up with the side of principal post is perpendicular.
The baffle adopts the rectangular plate, has longest side, shorter limit and shortest limit, the direction on longest side is length direction, and the direction on shortest side is the thickness direction, and the direction on shorter limit is width direction, and wherein the plane vertical setting that longest side and shorter limit are located, the width of baffle is less than the distance of principal post side to upper strata base plate portion side, the width ratio of baffle thickness and baffle is 1: 2.5. The baffle can adopt thickness to set up according to actual need, compares with increaseing bottom plate and principal post size and improving the antidumping ability, adopts the baffle to save the concrete volume.
In this embodiment, the baffles, the main columns and the bottom plate are formed by pouring integrated concrete.
In the embodiment, the power transmission line tower is a steel pipe pole, the connecting piece is a foundation bolt, in other embodiments, the connecting piece can also be a connecting steel bar and the like, and the connecting piece is selected by a person skilled in the art according to actual needs.
When the power transmission line tower foundation of this embodiment is used, all the bottom plates and the baffles are bought into the soil body 4, the main column is partially buried into the soil body, and the top of the main column extends out of the soil body and is fixedly connected with the steel pipe rod of the power transmission line through the foundation bolt.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. The utility model provides a transmission line shaft tower basis, is including being arranged in the bottom plate that is whole to bury in the soil body, the bottom plate upper surface is equipped with the king post that is arranged in partly burying the soil body, its characterized in that, the bottom plate upper surface still is equipped with the baffle that can bury the soil body and undertake the load that topples, and the baffle is connected as an organic whole with the king post.
2. The tower foundation of claim 1, wherein the plurality of baffles are arranged symmetrically with respect to the axis of the main column.
3. The tower foundation of claim 1, wherein the baffle is a rectangular plate, and the baffle is arranged perpendicular to the upper surface of the bottom plate.
4. The tower foundation of claim 1, wherein the bottom plate, the main column and the baffle are all of reinforced concrete structure.
5. The tower foundation of claim 4, wherein the steel bars in the bottom plate are connected with the steel bars in the main column, the steel bars in the bottom plate are connected with the steel bars in the baffle plate, and the steel bars in the main column are connected with the steel bars in the baffle plate.
6. The tower foundation of claim 4, wherein the concrete strength of the bottom plate, the main columns and the baffles is not less than C20.
7. The tower foundation of claim 4, wherein the yield strength of the steel reinforcement in the bottom plate, the main column and the baffle is not lower than HPB 300.
8. The tower foundation of claim 1, wherein the bottom plate is formed by integrally connecting a plurality of layers of upper and lower coaxially arranged base plate portions, and the cross-sectional area of the upper base plate portion is smaller than that of the lower base plate portion in two adjacent layers of base plate portions.
9. The power transmission line tower foundation of claim 1, wherein the main column is embedded with a connecting member, and the main column can be fixed with the power transmission line tower through the connecting member.
10. The tower foundation of claim 1, wherein the cross section of the main column is square or circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121772958.4U CN215926045U (en) | 2021-07-30 | 2021-07-30 | Transmission line shaft tower basis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121772958.4U CN215926045U (en) | 2021-07-30 | 2021-07-30 | Transmission line shaft tower basis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215926045U true CN215926045U (en) | 2022-03-01 |
Family
ID=80399023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121772958.4U Active CN215926045U (en) | 2021-07-30 | 2021-07-30 | Transmission line shaft tower basis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215926045U (en) |
-
2021
- 2021-07-30 CN CN202121772958.4U patent/CN215926045U/en active Active
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