CN214219764U - Device for adjusting large-amplitude uneven settlement of iron tower foundation of power transmission line - Google Patents
Device for adjusting large-amplitude uneven settlement of iron tower foundation of power transmission line Download PDFInfo
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- CN214219764U CN214219764U CN202022648291.9U CN202022648291U CN214219764U CN 214219764 U CN214219764 U CN 214219764U CN 202022648291 U CN202022648291 U CN 202022648291U CN 214219764 U CN214219764 U CN 214219764U
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Abstract
The invention discloses a device for adjusting large-amplitude uneven settlement of a foundation of a power transmission line iron tower, which solves the problem of how to reliably and conveniently adjust a large-amplitude settled iron tower foot. Between iron tower footing board (3) and tower footing basis king post (4), be provided with fluting steel backing plate (6) and stool type support (7), adjustable foundation bolt (5) upwards pass the square bottom steel sheet (11) back of fluting steel backing plate (6) and stool type support (7) in proper order, with stool type support (7) and tower footing basis king post (4) fixed connection together, between iron tower footing board (3) and square top steel sheet (10) of stool type support (7), be provided with adjustable type support connecting bolt (8), adjustable type support connecting bolt is in the same place stool type support and iron tower footing board (3) fixed connection. The foundation of the sinking iron tower can be conveniently adjusted on site in real time, and the foundation is particularly suitable for being used when the phenomenon of large-scale sinking occurs.
Description
Technical Field
The invention relates to a power transmission line iron tower foundation, in particular to a large-amplitude uneven settlement adjusting device and method for the power transmission line iron tower foundation.
Background
The underground mineral exploitation can cause the deformation and the collapse of the ground surface, the power transmission line iron tower is generally connected to a basic main column through tower foot plates on four tower legs, foundation bolts are pre-embedded in the basic main column, the tower foot plates are sleeved on the foundation bolts, the concentrated load of the iron tower foundation to the ground is large, if the power transmission line iron tower is arranged in an exploitation affected area, the uneven settlement of the power transmission line iron tower foundation is easy to occur, particularly, after the uneven settlement of the four tower foot foundations occurs, the stress system of the iron tower can be greatly changed, the iron tower is directly inclined and deformed, and even the serious consequence of line breakage due to tower collapse occurs, therefore, when the power transmission line iron tower foundation in the exploitation affected area is settled, the power transmission line iron tower foundation needs to be timely adjusted and fixed, at present, the settlement adjusting method of the power transmission line iron tower foundation mainly comprises two modes of presetting a hydraulic adjusting device and a special tower foot plate, the adjusting method of the preset hydraulic adjusting device has the disadvantages that the investment cost is high in the early stage, the device needs to be buried in a large area, special personnel is needed to maintain during the operation, the adjusting range of the device is limited, and the device cannot be used in occasions with large settlement amplitude; the special tower foot plate is adjusted into a disposable adjusting device, and the adjusting range is limited.
Disclosure of Invention
The invention provides a device and a method for adjusting large-amplitude uneven settlement of a foundation of a power transmission line iron tower, and solves the technical problem of how to reliably and conveniently adjust large-amplitude settled iron tower anchor.
The invention solves the technical problems by the following technical scheme:
a device for adjusting the large-amplitude uneven settlement of the foundation of a power transmission line iron tower comprises an iron tower body and an iron tower foundation main column, wherein four tower legs are arranged at the lower end of the iron tower body, tower foot plates are arranged at the lower ends of the tower legs, adjustable foundation bolts are pre-embedded on the iron tower foundation main column, a slotted steel backing plate and a stool-shaped support are arranged between the tower foot plates and the iron tower foundation main column, the stool-shaped support is composed of a square top steel plate, a cross-shaped crossed steel plate support and a square bottom steel plate, the cross-shaped crossed steel plate support is welded between the square top steel plate and the square bottom steel plate which are parallel to each other, the stool-shaped support is in the shape of a vertical column stool, the adjustable foundation bolts sequentially penetrate through the slotted steel backing plate and the square bottom steel plate of the stool-shaped support upwards, the stool-shaped support is fixedly connected with the iron tower foundation main column, and the stool-shaped support is arranged between the tower foot plates and the square top steel plate of the stool-shaped support, and an adjustable support connecting bolt is arranged to fixedly connect the stool-shaped support with the tower foot plate.
Adjustable foundation bolt through holes are formed in the square bottom steel plate, and a bottom stiffening plate is welded between the cross-shaped crossed steel plate bracket and the square bottom steel plate; an adjustable support connecting bolt through hole is formed in the square top steel plate, and a top stiffening plate is arranged between the crossed steel plate support and the square top steel plate.
An adjusting method of a large-amplitude uneven settlement adjusting device for a power transmission line iron tower foundation comprises the steps of firstly measuring the settlement of a main column of the iron tower foundation;
if the sedimentation amount is more than 200 mm, adjusting according to the following steps:
step one, manufacturing a bench type support with the height close to the settlement amount, wherein the size of a square top steel plate and the size of a square bottom steel plate of the bench type support are the same as those of a tower foot plate, and the thickness of the square top steel plate, the square bottom steel plate and the thickness of a steel plate of a cross-shaped crossed steel plate support are determined according to the basic acting force of an iron tower;
secondly, manufacturing a slotted steel base plate, and processing a U-shaped groove on the slotted steel base plate according to the position of an adjustable foundation bolt pre-embedded on a foundation main column of the iron tower;
thirdly, lifting tower legs on the settled main column of the iron tower foundation by using the auxiliary holding rods, and placing the bench-shaped support manufactured in the first step between the tower foot plate and the main column of the iron tower foundation;
fourthly, inserting the slotted steel base plate manufactured in the second step between the bench type support and the iron tower foundation main column, and enabling the sum of the height of the inserted slotted steel base plate and the height of the bench type support to be equal to the settlement of the iron tower foundation main column;
fifthly, fixedly connecting the tower foot plate and the square top steel plate together through an adjustable support connecting bolt; fixedly connecting the iron tower foundation main column, the slotted steel base plate and the square bottom steel plate together through adjustable foundation bolts;
if the sedimentation amount is less than 200 mm, adjusting according to the following steps:
firstly, manufacturing a slotted steel base plate, and processing a U-shaped groove on the slotted steel base plate according to the position of an adjustable foundation bolt pre-embedded on a foundation main column of an iron tower;
secondly, raising tower legs on the settled main column of the iron tower foundation by using the auxiliary holding rods, and inserting the slotted steel base plate manufactured in the first step between the tower foot plate and the main column of the iron tower foundation to ensure that the total height of the inserted slotted steel base plate is equal to the settlement of the main column of the iron tower foundation;
and thirdly, fixedly connecting the iron tower foundation main column, the slotted steel base plate and the tower foot plate together through adjustable foundation bolts.
The invention has simple structure and low cost, is convenient for adjusting the settled iron tower foundation on site in real time, is particularly suitable for being used when the large-amplitude settlement phenomenon occurs, can effectively replace the existing method of foundation reconstruction after the large-amplitude settlement occurs, saves the engineering investment, ensures the safe operation of the transmission line and has better safety and economy.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the structure of the stool-type seat 7 of the present invention;
FIG. 3 is a sectional view taken along line A-A in FIG. 2;
FIG. 4 is a sectional view taken along line B-B of FIG. 2;
FIG. 5 is a schematic structural view of the grooved steel backing plate 6 of the present invention;
FIG. 6 is a schematic view of the structure of the adjusting device of the present invention at settling time of less than 200 mm;
fig. 7 is a structural schematic diagram of the iron tower of the present invention in a top view direction.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
a device for adjusting the large-amplitude uneven settlement of an electric transmission line iron tower foundation comprises an iron tower body 1 and an iron tower foundation main column 4, wherein four tower legs 2 are arranged at the lower end of the iron tower body 1, tower foot plates 3 are arranged at the lower ends of the tower legs 2, adjustable foundation bolts 5 are pre-embedded on the iron tower foundation main column 4, a slotted steel backing plate 6 and a stool-shaped support 7 are arranged between the tower foot plates 3 and the iron tower foundation main column 4, the stool-shaped support 7 is composed of a square top steel plate 10, a cross-shaped crossed steel plate support 9 and a square bottom steel plate 11, the cross-shaped crossed steel plate support 9 is welded between the square top steel plate 10 and the square bottom steel plate 11 which are parallel to each other, the stool-shaped support 7 is in a shape of a column stool, the adjustable foundation bolts 5 sequentially penetrate through the slotted steel backing plate 6 and the square bottom steel plate 11 of the stool-shaped support 7 upwards, the stool-shaped support 7 is fixedly connected with the iron tower foundation main column 4, an adjustable support connecting bolt 8 is arranged between the tower foot plate 3 and a square top steel plate 10 of the stool-shaped support 7, and the stool-shaped support 7 and the tower foot plate 3 are fixedly connected together through the adjustable support connecting bolt 8; the adjustable anchor bolts 5 are poured in the main column 4 of the iron tower foundation, pre-burying can be considered in advance during foundation design, the adjustable anchor bolts 5 are longer than common anchor bolts by 100 and 200 kilometers, real-time adjustment can be carried out according to settlement change conditions, the amplitude range is large and can reach more than 1 meter; the slotted steel base plates 6 are generally steel plates with the thickness of 20 mm, the size of the steel plates is consistent with that of the tower foot plates 3, U-shaped slots are formed according to the specification and the spacing of foundation bolts, the two slotted steel base plates 6 which are adjacent up and down are staggered and padded under the tower foot plates, and the weight of a single slotted steel base plate 6 is generally 20-40 kg.
An adjustable foundation bolt through hole 13 is formed in the square bottom steel plate 11, and a bottom stiffening plate 12 is welded between the cross-shaped crossed steel plate bracket 9 and the square bottom steel plate 11; an adjustable support connecting bolt through hole 14 is formed in the square top steel plate 10, and a top stiffening plate 12 is arranged between the cross-shaped crossed steel plate support 9 and the square top steel plate 10.
An adjusting method of a large-amplitude uneven settlement adjusting device for a power transmission line iron tower foundation comprises the steps of firstly measuring the settlement of a main column 4 of the iron tower foundation;
if the sedimentation amount is more than 200 mm, adjusting according to the following steps:
firstly, manufacturing a stool type support 7 with the height close to the settlement amount, wherein the size of a square top steel plate 10 and the size of a square bottom steel plate 11 of the stool type support 7 are the same as those of the tower foot plates 3, and calculating and determining the thickness of the square top steel plate 10, the square bottom steel plate 11 and the cross-shaped crossed steel plate bracket 9 according to the basic acting force of the iron tower;
secondly, manufacturing a slotted steel base plate 6, and processing a U-shaped groove on the slotted steel base plate 6 according to the position of an adjustable foundation bolt 5 pre-embedded on the iron tower foundation main column 4;
thirdly, lifting the tower legs 2 on the settled main column 4 of the iron tower foundation by using the auxiliary holding rods, and placing the stool-shaped support 7 manufactured in the first step between the tower foot plate 3 and the main column 4 of the iron tower foundation;
fourthly, inserting the slotted steel padding plate 6 manufactured in the second step between the bench type support 7 and the iron tower foundation main column 4, and enabling the sum of the height of the inserted slotted steel padding plate 6 and the height of the bench type support 7 to be equal to the settlement of the iron tower foundation main column 4;
fifthly, fixedly connecting the tower foot plate 3 with the square top steel plate 10 through an adjustable support connecting bolt 8; fixedly connecting an iron tower foundation main column 4, a slotted steel base plate 6 and a square bottom steel plate 11 together through adjustable foundation bolts 5;
if the sedimentation amount is less than 200 mm, adjusting according to the following steps:
firstly, manufacturing a slotted steel base plate 6, and processing a U-shaped groove on the slotted steel base plate 6 according to the position of an adjustable foundation bolt 5 pre-embedded on a foundation main column 4 of an iron tower;
secondly, raising the tower legs 2 on the settled main column 4 of the iron tower foundation by using the auxiliary holding rods, and inserting the slotted steel base plate 6 manufactured in the first step between the tower foot plate 3 and the main column 4 of the iron tower foundation to ensure that the total height of the inserted slotted steel base plate 6 is equal to the settlement of the main column 4 of the iron tower foundation;
and thirdly, fixedly connecting the iron tower foundation main column 4, the slotted steel base plate 6 and the tower foot plate 3 together through the adjustable foundation bolts 5.
When the relative uneven settlement of the four anchor feet of the iron tower is within 200 mm, only slotted steel base plates 6 are required to be arranged between the relatively settled iron tower foundation main column 4 and the tower foot plates 3 in a staggered manner, and the four tower foot plates 3 are adjusted to be at the same height; when the relative uneven settlement of four anchor feet of the iron tower is more than 200 mm, a slotted steel backing plate 6 and a stool type support 7 are arranged between a main foundation column 4 of the iron tower with larger relative settlement and a tower foot plate 3, and the sizes and the holes of a square top steel plate 10 and a square bottom steel plate 11 of the stool type support 7 are consistent with those of the tower foot plate 3; the adjusting device has fewer parts, the weight of the arranged slotted steel backing plate 6 and the stool-shaped support 7 is generally within 500 kilograms, the components are convenient to process, the field operation is simple, the uneven settlement can be effectively and timely adjusted, the tower foundation shifting or the new line changing construction is avoided, the power failure time is effectively reduced, and the engineering investment is greatly reduced; compared with a single-base tower, the invention saves the investment by 210 ten thousand yuan when being newly built for a 500kV line; the invention saves 90 ten thousand yuan for a 220kV line compared with a single-base tower.
Claims (2)
1. A large-amplitude uneven settlement adjusting device for a power transmission line iron tower foundation comprises an iron tower body (1) and an iron tower foundation main column (4), wherein four tower legs (2) are arranged at the lower end of the iron tower body (1), tower foot plates (3) are arranged at the lower ends of the tower legs (2), and adjustable foundation bolts (5) are pre-embedded on the iron tower foundation main column (4), the device is characterized in that a slotted steel base plate (6) and a stool-shaped support (7) are arranged between the tower foot plates (3) and the iron tower foundation main column (4), the stool-shaped support (7) is composed of a square top steel plate (10), a cross-shaped steel plate support (9) and a square bottom steel plate (11), the cross-shaped steel plate support (9) is welded between the square top steel plate (10) and the square bottom steel plate (11) which are parallel to each other, and the stool-shaped support (7) is in a column stool shape, adjustable rag bolt (5) upwards pass square bottom steel sheet (11) back of fluting steel backing plate (6) and stool type support (7) in proper order, with stool type support (7) and iron tower basis king-post (4) fixed connection together, between square top steel sheet (10) of tower footboard (3) and stool type support (7), be provided with adjustable nodal pattern support connecting bolt (8), adjustable nodal pattern support connecting bolt (8) are in the same place stool type support (7) and tower footboard (3) fixed connection.
2. The large-amplitude uneven settlement adjusting device for the power transmission line iron tower foundation according to claim 1, characterized in that an adjustable foundation bolt through hole (13) is formed in a square bottom steel plate (11), and a bottom stiffening plate (12) is welded between a cross-shaped crossed steel plate bracket (9) and the square bottom steel plate (11); an adjustable support connecting bolt through hole (14) is formed in the square top steel plate (10), and a top stiffening plate (12) is arranged between the cross-shaped crossed steel plate support (9) and the square top steel plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022648291.9U CN214219764U (en) | 2020-11-16 | 2020-11-16 | Device for adjusting large-amplitude uneven settlement of iron tower foundation of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022648291.9U CN214219764U (en) | 2020-11-16 | 2020-11-16 | Device for adjusting large-amplitude uneven settlement of iron tower foundation of power transmission line |
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| Publication Number | Publication Date |
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| CN214219764U true CN214219764U (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022648291.9U Active CN214219764U (en) | 2020-11-16 | 2020-11-16 | Device for adjusting large-amplitude uneven settlement of iron tower foundation of power transmission line |
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| CN (1) | CN214219764U (en) |
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- 2020-11-16 CN CN202022648291.9U patent/CN214219764U/en active Active
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