CN218263963U - A prefabricated foundation for transmission lines - Google Patents

Abstract

The utility model discloses an assembly type foundation of a power transmission line, which comprises a plurality of base blocks, upright posts and flange plates; a plurality of bases are combined and spliced into a combined base in a blocking way, and the combined base is at least one layer; the stand column is vertically arranged at the center of the top surface of the combined base, the flange plate is anchored at the outer edge of the bottom end of the stand column, vertical embedded bolts are embedded in the base blocks which are in contact with the stand column, the embedded bolts correspond to the bolt holes of the flange plate in position, and the top ends of the embedded bolts protrude out of the top surface of the base blocks and are fixed with the flange plate through nuts. The single structure is small in size, light in weight, convenient to process and transport, simple in splicing mode and high in overall strength, reliability and safety are improved, the single structure is also suitable for power transmission lines with different voltage grades, the single structure can be expanded according to actual requirements, and applicability is high.

Description

A prefabricated foundation for transmission lines

Technical field:

The utility model relates to an assembled foundation, in particular to an assembled foundation of a power transmission line.

Background technique:

The basic structure of the transmission line is the key structure to ensure the safety and reliability of the transmission line. At present, the foundation of the transmission line is usually completed by on-site pouring, which requires concrete pouring and maintenance, on-site formwork erection and steel bar binding. The quality of finished products is highly discrete; moreover, the safety risks and noise pollution of on-site construction are relatively large, which will have a great impact on the surrounding environment, especially during winter construction, and the maintenance of concrete is very difficult. At present, the basic structure of the transmission line is also prefabricated as a whole, but because the basic structure of the transmission line needs to meet a certain size to ensure the firmness and stability of the foundation, resulting in heavy weight and large size of the concrete, which requires high requirements for construction machinery. The safety risks of transportation and on-site installation are relatively large. At the same time, due to the use of large-scale machinery, temporary road construction and site leveling are required, and machinery rental is required, which greatly increases the construction period and construction cost.

Utility model content:

The purpose of the utility model is to provide an assembled foundation for transmission lines, which is convenient for processing and transportation, has a simple splicing method and is easy to expand, and is suitable for transmission lines of different voltage levels.

The utility model is implemented by the following technical solutions:

An assembled foundation of a power transmission line, comprising several base blocks, columns and flanges;

A plurality of the bases are combined and assembled into a combined base, and the combined base has at least one layer; the column is vertically arranged at the center of the top surface of the combined base, and anchored at the outer edge of the bottom end of the column. The flange is pre-embedded with vertical pre-embedded bolts in the base block in contact with the column, and the pre-embedded bolts correspond to the positions of the bolt holes of the flange, and the pre-embedded bolts The top of the buried bolt protrudes from the top surface of the base block and is fixed with the flange by a nut;

Anti-corrosion materials are coated on the outer surfaces of the column, the base block, the flange and the combined base.

Further, a vertical connection sleeve is pre-embedded inside the base block;

The two adjacent base blocks in the horizontal direction are connected by two horizontally arranged connecting steel plates respectively arranged on the top surface and the bottom surface of the base block. There are at least two through holes corresponding to the positions of the connecting sleeves on each of the base blocks, and embedding grooves corresponding to the positions of the connecting steel plates are respectively opened on the top and bottom surfaces of the base block, and the connecting steel plates embedded in the embedding groove;

The connecting screw passes through the connecting sleeve and the through hole on the connecting steel plate and is fixed to the base by nuts, and the gap between the connecting screw and the connecting sleeve is filled with grouting material.

Further, the combined base has a two-layer structure;

The positions of the connecting sleeves inside the overlapping parts of the two adjacent base blocks up and down are corresponding, and the connecting screw passes through the corresponding connecting sleeves in the two adjacent base blocks up and down at the same time The pipe and the through hole on the connecting steel plate are then fixed to the base by nuts, and the gap between the connecting screw and the connecting sleeve is filled with grouting material.

Further, a reinforcing rib is provided between two adjacent bolt holes on the flange, one end of the reinforcing rib is welded and fixed to the flange, and the other end of the reinforcing rib One end is welded and fixed with the steel structure inside the column.

Advantage of the utility model:

Each individual structure in the utility model is small in size and light in weight, which is convenient for processing and transportation, and the splicing method is simple, the overall strength is high, and the reliability and safety are improved. It is also suitable for transmission lines of different voltage levels, and can also be It can be expanded according to actual needs and has strong applicability; in addition, the columns and base blocks are prefabricated in the factory and then assembled on site. The on-site concrete pouring and maintenance, on-site formwork erection and steel bar binding operations are eliminated. While ensuring the strength of the foundation, it saves the construction period and reduces the construction difficulty.

Description of drawings:

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural representation of column and flange of the utility model;

Fig. 2 is the top view structural representation of embodiment 1;

Fig. 3 is A-A sectional schematic diagram in Fig. 2;

Fig. 4 is the top view structural representation of embodiment 2;

Fig. 5 is a schematic cross-sectional view of B-B in Fig. 4 .

In the figure: base block 1, column 2, flange plate 3, connecting screw rod 4, connecting steel plate 5, embedded groove 6, reinforcing rib plate 7, embedded bolt 8.

detailed description:

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Example 1:

A prefabricated foundation for transmission lines as shown in Figures 1-3, including a number of base blocks 1, columns 2 and flanges 3;

In this embodiment, the number of base blocks 1 to be used can be determined according to the voltage level of the transmission line, because the higher the voltage level of the transmission line, the greater the external load, and the size of the foundation and the column 2 should also increase accordingly , the specific number of base blocks 1 can be 4, 9, 16, etc.; in this embodiment, a combined base that uses 4 base blocks 1 to form a layer is taken as an example for illustration.

The base block 1 has a rectangular parallelepiped structure with a square cross section; the four base blocks 1 are combined and assembled into a one-layer combined base, and the cross section of the combined base is square;

Inside the base block 1, a vertical connecting sleeve for the connection screw 4 to pass is embedded; Two horizontally arranged connecting steel plates 5 are connected, and a plurality of through holes corresponding to the positions of the connecting sleeves on the two adjacent base blocks 1 are opened on the connecting steel plates 5, and on the top and bottom surfaces of the base block 1 There are embedding grooves 6 corresponding to the positions of the connecting steel plates 5 respectively, and the connecting steel plates 5 are embedded in the embedding grooves 6; the connecting screw rod 4 passes through the connecting sleeve and the through hole on the connecting steel plate 5 and then passes through nuts to block the base 1 is fixed, and grouting material is poured into the gap between the connecting screw 4 and the connecting sleeve.

The opening of the embedded groove 6 can ensure that the connecting steel plate 5 and the connecting screw 4 do not protrude from the base block 1, ensuring good splicing between the base blocks 1, thereby ensuring the stability of the combined base; the connecting screw 4 can be horizontally connected Provide a stress point; the connecting steel plate 5 not only serves as a horizontal connection between two adjacent base blocks 1, but also supports the nut to a certain extent, reduces the stress of the nut on the base block 1, and improves the combined base overall firmness.

The column 2 is vertically arranged at the center of the top surface of the combined base, and the outer edge of the bottom end of the column 2 is anchored with a flange 3, and a reinforcing rib is provided between two adjacent bolt holes on the flange 3 Plate 7, one end of the reinforcing rib 7 is welded and fixed to the flange 3, and the other end of the reinforcing rib 7 is welded and fixed to the steel structure inside the column 2.

Vertical embedded bolts 8 are pre-embedded in the base block 1 in contact with the column 2, and the positions of the embedded bolts 8 correspond to the bolt holes of the flange 3, and the top ends of the embedded bolts 8 protrude from the base block 1 The top surface and the flange 3 are fixed by nuts;

The outer surfaces of the column 2, the base block 1, the flange plate 3 and the combined base are all coated with anti-corrosion materials.

Example 2:

As shown in Figure 1, Figure 4, and Figure 5, a prefabricated foundation for a power transmission line includes a number of base blocks 1, columns 2 and flanges 3;

When it is necessary to further strengthen the solid stability of the foundation and the column 2, the base block 1 can also be assembled into a two-layer structure, and the cross-section of each layer increases sequentially from top to bottom, such as the first layer is 4, the second The second floor is 9, and so on. In this embodiment, an example of a composite base in which four base blocks 1 are used on the first layer and nine base blocks 1 are used on the second layer is used for illustration.

The base block 1 has a rectangular parallelepiped structure with a square cross section; 13 base blocks 1 are combined and assembled into a combined base with a two-layer structure, and the cross section of the combined base is square.

Inside the base block 1, a vertical connecting sleeve for the connection screw 4 to pass is embedded; Two horizontally arranged connecting steel plates 5 are connected, and a plurality of through holes corresponding to the positions of the connecting sleeves on the two adjacent base blocks 1 are opened on the connecting steel plates 5, and on the top and bottom surfaces of the base block 1 Embedding grooves 6 corresponding to the positions of the connecting steel plates 5 are respectively opened on the top, and the connecting steel plates 5 are embedded in the embedding grooves 6; After passing through the connecting sleeves corresponding to the positions in the two adjacent base blocks 1 up and down and the through holes on the connecting steel plate 5, fix them with the base block 1 through nuts, and in the gap between the connecting screw rod 4 and the connecting sleeve Filled with grout.

The opening of the embedded groove 6 can ensure that the connecting steel plate 5 and the connecting screw 4 do not protrude from the base block 1, ensuring good splicing between the base blocks 1, thereby ensuring the stability of the combined base; the connecting screw 4 can not only play a role For the vertical connection between the upper and lower adjacent base blocks 1, it can also provide stress points for the horizontal connection; the connecting steel plate 5 not only plays a role in the horizontal connection between the adjacent two base blocks 1, but also can Play a certain supporting role to the nut, reduce the stress of the nut on the base block 1, and improve the firmness of the combined base as a whole.

The column 2 is vertically arranged at the center of the top surface of the combined base, and the outer edge of the bottom end of the column 2 is anchored with a flange 3, and a reinforcing rib is provided between two adjacent bolt holes on the flange 3 Plate 7, one end of the reinforcing rib 7 is welded and fixed to the flange 3, and the other end of the reinforcing rib 7 is welded and fixed to the steel structure inside the column 2.

Vertical embedded bolts 8 are pre-embedded in the base block 1 in contact with the column 2, and the positions of the embedded bolts 8 correspond to the bolt holes of the flange 3, and the top ends of the embedded bolts 8 protrude from the base block 1 The top surface and the flange 3 are fixed by nuts.

The outer surfaces of the column 2, the base block 1, the flange plate 3 and the combined base are all coated with anti-corrosion materials.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (4)

1. An assembled foundation of a power transmission line is characterized by comprising a plurality of base blocks, stand columns and flange plates;

a plurality of bases are combined into a combined base in a blocking and assembling mode, and the combined base is at least one layer; the upright post is vertically arranged at the center of the top surface of the combined base, the flange plate is anchored at the outer edge of the bottom end of the upright post, vertical embedded bolts are embedded in the base blocks contacted with the upright post, the embedded bolts correspond to the bolt holes of the flange plate in position, and the top ends of the embedded bolts protrude out of the top surface of the base blocks and are fixed with the flange plate through nuts;

and anticorrosive materials are coated on the outer surfaces of the upright post, the base block, the flange plate and the combined base.

2. The fabricated foundation of power transmission line according to claim 1, wherein a vertically arranged connecting sleeve is pre-embedded in the base block;

the two base blocks which are adjacent in the horizontal direction are connected through two horizontally arranged connecting steel plates which are respectively arranged on the top surface and the bottom surface of each base block, at least two through holes which respectively correspond to the positions of connecting sleeves on the two adjacent base blocks are formed in the connecting steel plates, embedded grooves which correspond to the positions of the connecting steel plates are respectively formed in the top surface and the bottom surface of each base block, and the connecting steel plates are embedded in the embedded grooves;

the connecting screw rod penetrates through the connecting sleeve and the through hole in the connecting steel plate and then is fixed with the base in a blocking mode through the nut, and grouting materials are poured into the gap between the connecting screw rod and the connecting sleeve.

3. The fabricated foundation of claim 2, wherein the combined base is of a two-layer structure;

the connection screw rod penetrates through the two adjacent upper and lower positions in the base blocks, the connection sleeve corresponds to the through hole in the connection steel plate, and then is fixed with the base blocks through the nut, and grouting materials are poured into gaps between the connection screw rod and the connection sleeve.

4. The fabricated foundation of claim 1, wherein a reinforcing rib plate is arranged between every two adjacent bolt holes on the flange, one end of the reinforcing rib plate is fixedly welded to the flange, and the other end of the reinforcing rib plate is fixedly welded to a steel structure in the upright.

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