CN212561599U - Eccentric oblique anchor type spiral anchor foundation for upright column of power transmission line iron tower - Google Patents
Eccentric oblique anchor type spiral anchor foundation for upright column of power transmission line iron tower Download PDFInfo
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- CN212561599U CN212561599U CN202020831227.1U CN202020831227U CN212561599U CN 212561599 U CN212561599 U CN 212561599U CN 202020831227 U CN202020831227 U CN 202020831227U CN 212561599 U CN212561599 U CN 212561599U
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Abstract
The eccentric oblique anchor type spiral anchor foundation for the vertical column of the power transmission line iron tower comprises a concrete bearing platform, wherein the vertical column is arranged on the concrete bearing platform, a plurality of spiral anchors are arranged below the concrete bearing platform, the vertical column is eccentrically arranged on the concrete bearing platform, the spiral anchors are installed in a one-way oblique mode, and the comprehensive gradient of the oblique spiral anchors is consistent with the gradient of the iron tower. The spiral anchor foundation of the utility model has strong horizontal bearing capacity; the concrete amount of the spiral anchor foundation can be saved, and the bearing capacity of the spiral anchor foundation is improved; the construction is simple and convenient; compared with the traditional spiral anchor foundation, the concrete quantity can be saved by 50-80%, and the method has good economic benefit.
Description
Technical Field
The utility model relates to a transmission line iron tower spiral anchor basis, concretely relates to eccentric oblique anchor formula spiral anchor basis of transmission line iron tower upright post.
Background
The spiral anchor foundation is a novel environment-friendly foundation, consists of an anchor rod, an anchor plate, an upper bearing platform and the like, and is an anchoring structure utilizing the resistance of a deep soil body. The torque is applied through the screw rod, the spiral anchor plate is screwed into a deeper soil body, the plurality of spiral anchors are connected with the iron tower through the concrete bearing platform and the upright post, the disturbance of the foundation type to the soil body is small, the inherent strength of the original soil body can be fully exerted, and the bearing capacity is improved. The spiral anchorage has the advantages of simple processing, convenient construction and installation, higher drilling speed, capability of greatly shortening the construction period, reducing the construction cost, small environmental damage, high bearing capacity, small foundation deformation and the like, and has important significance for saving the concrete amount and protecting the natural ecological environment in the power transmission line engineering.
The traditional spiral anchor foundation is basically a straight anchor type without eccentric upright columns, has poor horizontal bearing capacity and is generally only used for a straight line tower foundation with a small gradient of main materials of an iron tower and a small horizontal force; when the foundation is used for the corner tower foundation with a main material with a larger gradient and a larger horizontal force, the foundation bearing platform needs to be enlarged, but the effect of saving the concrete amount of the spiral anchor foundation cannot be achieved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that, overcome prior art's not enough, provide a transmission line iron tower upright post eccentric oblique anchor formula spiral anchor basis that bearing capacity is strong, engineering concrete volume and cubic metre of earth and stone volume quantity are few, practice thrift the engineering investment.
The utility model provides a technical scheme that its technical problem adopted: the eccentric oblique anchor type spiral anchor foundation for the vertical column of the power transmission line iron tower comprises a concrete bearing platform, wherein the vertical column is arranged on the concrete bearing platform, a plurality of spiral anchors are arranged below the concrete bearing platform, the vertical column is eccentrically arranged on the concrete bearing platform, and each spiral anchor comprises a vertical spiral anchor and an oblique spiral anchor.
Further, the comprehensive gradient of the inclined screw anchor is consistent with the gradient of the iron tower.
Furthermore, the connection points of the two adjacent spiral anchors on the concrete bearing platform are equidistant points, and the inclination of the inclined spiral anchor is positively correlated with the distance between the connection points of the inclined spiral anchor and the vertical spiral anchor.
Further, the inclined screw anchor is installed in a one-way inclined mode.
Further, the inclination of the inclined screw anchor is 7 degrees, 10 degrees, 15 degrees, 16 degrees and 20 degrees in sequence according to the distance between the connection points.
Further, the upright posts and the tower foundation bolts are fixed through pouring concrete.
The utility model discloses compare with traditional spiral anchor basis: the comprehensive inclination of the spiral anchor is consistent with the gradient of the iron tower, and the horizontal bearing capacity of the spiral anchor foundation can be improved by arranging the eccentric upright column; the inclined angles of the inclined spiral anchors are different, so that the distance between the tail ends of the spiral anchors can be increased, the size of a concrete bearing platform is reduced, the concrete amount of the spiral anchor foundation is saved, and the bearing capacity of the spiral anchor foundation is improved; the connection between the spiral anchor and the concrete bearing platform and the connection between the concrete bearing platform and the eccentric upright post of the utility model adopt the cast-in-place concrete mode, and the construction is simple and convenient; compared with the traditional spiral anchor foundation, the eccentric inclined anchor type spiral anchor foundation saves the concrete by 50-80 percent, and has good economic benefit.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present invention (only one row containing vertical screw anchors is shown in the figure);
fig. 2 is a cross-sectional view a-a of fig. 1.
In the figure: 1-concrete bearing platform, 2-upright column, 3-screw anchor, 31-vertical screw anchor, 32-inclined screw anchor, 33-connecting point and 4-iron tower.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. When the spiral anchor foundation is used for bearing an iron tower, the spiral anchor foundation is generally symmetrically arranged and respectively bears four tower legs of the iron tower. One of the spiral anchor bases is described below.
Referring to the attached drawing 1, the concrete support platform comprises a concrete support platform 1, wherein an upright column 2 is arranged on the concrete support platform 1, a plurality of spiral anchors 3 are arranged below the concrete support platform 1, and the upright column 2 is used for bearing tower legs of an iron tower 4. The vertical column 2 is eccentrically arranged on the concrete bearing platform 1, and the vertical column 2 is eccentrically arranged, so that the bearing capacity of the spiral anchor foundation in the horizontal direction can be improved. The spiral anchor 3 is installed in a one-way inclined mode, and the comprehensive gradient of the inclined spiral anchor 3 is consistent with the gradient of the iron tower, (the comprehensive gradient is the integral gradient of the support anchor rod formed by all the inclined spiral anchors 3). The screw anchor 3 is screwed into the deeper soil body in an inclined mode, and the inclined screw anchor 3 can increase the horizontal bearing capacity of the foundation.
Referring to fig. 2, this embodiment is equipped with 9 screw anchors 3, including 1 vertical screw anchor 31 and 8 inclined screw anchors 32, the tie point 33 of each adjacent screw anchor 3 on concrete cushion cap 1 is equidistant point, the gradient size of inclined screw anchor 32 is positive correlation with the distance of inclined screw anchor 32 and vertical screw anchor 31 tie point 33, after screw anchor 3 leaned according to different angles, its terminal interval increase, can reduce concrete cushion cap size when increasing the whole bearing capacity of screw anchor basis, practice thrift basic concrete square volume.
The inclination of the outer side of the iron tower 4 is 15 degrees (vertical direction), and the inclination of the inclined spiral anchor 32 is 7 degrees, 10 degrees, 15 degrees, 16 degrees and 20 degrees sequentially according to the distance between the connection points.
The installation process of this embodiment: firstly, excavating a foundation pit according to the bottom area of the concrete bearing platform 1, and then drilling the spiral anchors 3 into undisturbed soil according to respective set angles through a spiral anchor drilling machine; and then placing the bound reinforcement of the concrete bearing platform 1 and the eccentric upright post 2 into the foundation pit, fixing the foundation bolt of the iron tower 4 on the reinforcement, and finally pouring concrete to form the eccentric inclined anchor type spiral anchor foundation of the upright post.
The utility model discloses compare with traditional spiral anchor basis: the comprehensive gradient of the spiral anchor 3 is consistent with the gradient of the iron tower 4, and the horizontal bearing capacity of the spiral anchor foundation can be increased by arranging the eccentric upright post 2; the inclination angles of the inclined spiral anchors 3 are different, so that the distance between the tail ends of the spiral anchors can be increased, the size of the concrete bearing platform 1 is reduced, the concrete amount of the foundation is saved, and the bearing capacity of the spiral anchor foundation is improved; the connection between the spiral anchor 3 and the concrete bearing platform 1 and the connection between the concrete bearing platform 1 and the eccentric upright post 2 of the utility model adopt the cast-in-place concrete mode, and the construction is simple and convenient; compared with the traditional spiral anchor foundation, the eccentric inclined anchor type spiral anchor foundation saves the concrete by 50-80 percent, and has good economic benefit.
Various modifications and variations of the present invention may be made by those skilled in the art, and they are within the scope of the present invention provided they are within the scope of the claims and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (10)
1. The utility model provides an eccentric oblique anchor formula spiral anchor basis of transmission line iron tower upright post, includes the concrete cushion cap, be equipped with the upright post on the concrete cushion cap, the concrete cushion cap has a plurality of spiral anchors, its characterized in that: the screw anchor comprises a vertical screw anchor and an inclined screw anchor, and the vertical column is eccentrically arranged on the concrete bearing platform.
2. The eccentric oblique anchor type spiral anchor foundation of the upright column of the power transmission line tower as claimed in claim 1, wherein: the comprehensive gradient of each inclined spiral anchor is consistent with the gradient of the iron tower.
3. The eccentric oblique anchor type spiral anchor foundation of the upright column of the power transmission line tower as claimed in claim 1 or 2, wherein: the connecting points of the two adjacent spiral anchors on the concrete bearing platform are equidistant points, and the inclination of the inclined spiral anchor is positively correlated with the distance between the connecting points of the inclined spiral anchor and the vertical spiral anchor.
4. The eccentric oblique anchor type spiral anchor foundation of the upright column of the power transmission line tower as claimed in claim 1 or 2, wherein: the inclined spiral anchor is installed in a one-way inclined mode.
5. The eccentric oblique anchor type spiral anchor foundation of the upright column of the power transmission line tower as claimed in claim 3, wherein: the inclined spiral anchor is installed in a one-way inclined mode.
6. The eccentric oblique anchor type spiral anchor foundation of the upright column of the power transmission line tower as claimed in claim 3, wherein: the inclination of the inclined screw anchor is sequentially 7 degrees, 10 degrees, 15 degrees, 16 degrees and 20 degrees according to the distance between the connecting points.
7. The eccentric oblique anchor type spiral anchor foundation of the upright column of the power transmission line tower as claimed in claim 1 or 2, wherein: the upright column and the tower foundation bolt are fixed through pouring concrete.
8. The eccentric oblique anchor type spiral anchor foundation of the upright column of the power transmission line tower as claimed in claim 3, wherein: the upright column and the tower foundation bolt are fixed through pouring concrete.
9. The eccentric oblique anchor type spiral anchor foundation of the upright post of the power transmission line tower as claimed in claim 4, wherein: the upright column and the tower foundation bolt are fixed through pouring concrete.
10. The eccentric oblique anchor type spiral anchor foundation of the upright post of the power transmission line tower as claimed in claim 6, wherein: the upright column and the tower foundation bolt are fixed through pouring concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020831227.1U CN212561599U (en) | 2020-05-18 | 2020-05-18 | Eccentric oblique anchor type spiral anchor foundation for upright column of power transmission line iron tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020831227.1U CN212561599U (en) | 2020-05-18 | 2020-05-18 | Eccentric oblique anchor type spiral anchor foundation for upright column of power transmission line iron tower |
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| CN212561599U true CN212561599U (en) | 2021-02-19 |
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| CN202020831227.1U Active CN212561599U (en) | 2020-05-18 | 2020-05-18 | Eccentric oblique anchor type spiral anchor foundation for upright column of power transmission line iron tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775674A (en) * | 2022-03-28 | 2022-07-22 | 国网新疆电力有限公司经济技术研究院 | Modularized eccentric assembly type foundation |
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2020
- 2020-05-18 CN CN202020831227.1U patent/CN212561599U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775674A (en) * | 2022-03-28 | 2022-07-22 | 国网新疆电力有限公司经济技术研究院 | Modularized eccentric assembly type foundation |
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