Power transformation framework foundation

Abstract

The utility model provides a power transformation framework foundation, and relates to the field of framework foundations. The problems that according to an existing power transformation framework foundation, the cohesive force between the framework foundation and a herringbone column is low, and larger bearing capacity cannot be provided are solved. The power transformation framework foundation comprises a first foundation base, a second foundation base and a third foundation base, wherein a first mounting groove for fixing a first framework steel pipe herringbone column is formed in the top of the first foundation base; the second foundation base is arranged opposite to the first foundation base, and a second mounting groove for fixing a second framework steel pipe herringbone column is formed in the top of the second foundation base; a plurality of first grooves are formed in the inner wall of the first mounting groove; and a plurality of second grooves are formed in the inner wall of the second mounting groove. According to the scheme, the uplift bearing capacity of the power transformation framework foundation is improved.

Description

Technical Field

[0001] The utility model relates to the field of framework foundations, and particularly relates to a substation framework foundation. Background Art

[0002] The safety of a substation framework plays a crucial role in the reliable operation of a substation; the framework is mainly used for installing substation equipment, cables, disconnectors and other facilities, and mainly bears acting forces such as hanging line loads and wind loads; in the substation framework structure, the welded steel pipe herringbone column structure is the most widely used structure type; this kind of framework mainly adopts the structure of a straight-seam welded steel pipe herringbone shape. The force characteristics of the herringbone column substation framework foundation are that the horizontal force and the uplift force are relatively large. In order to facilitate on-site installation, the framework foundation mostly adopts a cup-shaped concrete foundation. When the herringbone column is mainly subjected to a downward pressure, the size of the foundation is mainly determined by the bearing capacity of the foundation soil. When the herringbone column is subjected to an uplift force, the weight of the foundation should be greater than the uplift force to meet the uplift requirement; for the existing framework foundation, when the horizontal load borne by the framework is relatively large, the uplift force of the herringbone column also increases accordingly. At this time, the weight of the foundation that meets the design requirements also becomes larger, and the requirement for the bonding force between the secondary grouting material at the cup opening and the already cast foundation also becomes larger; however, the current foundation form has a smooth plane at the cup opening, and the bonding force between the secondary grouting and the already cast foundation and the herringbone column is relatively low, and cannot provide a greater bearing capacity. The existing gravity cup foundation can no longer meet the safety requirements of the framework. Summary of the Utility Model

[0003] The utility model provides a substation framework foundation, which solves the problem that the existing substation framework foundation has a relatively low bonding force between the framework foundation and the herringbone column and cannot provide a greater bearing capacity.

[0004] To solve the above technical problems, the technical solution of the utility model is as follows:

[0005] An embodiment of the utility model provides a substation framework foundation, including:

[0006] A first foundation base, on the top of which there is a first installation groove for fixing the first framework steel pipe herringbone column;

[0007] A second foundation base arranged opposite to the first foundation base, on the top of which there is a second installation groove for fixing the second framework steel pipe herringbone column;

[0008] The inner wall of the first installation groove is provided with a plurality of first grooves;

[0009] The inner wall of the second installation groove is provided with a plurality of second grooves.

[0010] Optionally, a first boss is provided on the top of the first basic base, and the first installation groove is provided in the first boss and the first basic base.

[0011] Optionally, a second boss is provided on the top of the second basic base, and the second installation groove is provided in the second boss and the second basic base.

[0012] Optionally, the notch diameters of both the first installation groove and the second installation groove are larger than the bottom diameters.

[0013] Optionally, the substation framework foundation further includes:

[0014] At least one first fixing component provided at the first end of the first framework steel pipe chevron column, and the first end of the first framework steel pipe chevron column is provided in the first installation groove;

[0015] At least one second fixing component provided at the first end of the second framework steel pipe chevron column, and the first end of the second framework steel pipe chevron column is provided in the second installation groove.

[0016] Optionally, the first fixing component includes:

[0017] A first annular hoop and a plurality of first L-shaped angle steels integrally formed with the first annular hoop and provided around the first annular hoop;

[0018] Wherein, the first annular hoop is fixedly connected to the first end of the first framework steel pipe chevron column and is provided in the first groove.

[0019] Optionally, the second fixing component includes:

[0020] A second annular hoop and a plurality of second L-shaped angle steels integrally formed with the second annular hoop and provided around the second annular hoop;

[0021] Wherein, the second annular hoop is fixedly connected to the first end of the second framework steel pipe chevron column and is provided in the second groove.

[0022] Optionally, concrete cushions are provided at the bottoms of both the first basic base and the second basic base.

[0023] The above solution of the present utility model has at least the following beneficial effects:

[0024] The substation framework foundation described in the present utility model includes: a first foundation base, on the top of which there is a first installation groove for fixing the first framework steel pipe herringbone column; a second foundation base arranged opposite to the first foundation base, on the top of which there is a second installation groove for fixing the second framework steel pipe herringbone column; a plurality of first grooves are arranged on the inner wall of the first installation groove; and a plurality of second grooves are arranged on the inner wall of the second installation groove. The solution of the present utility model improves the uplift bearing capacity of the substation framework foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the substation framework foundation of the present utility model;

[0026] Figure 2 is a schematic structural diagram of the first fixing component of the substation framework foundation of the present utility model.

[0027] DESCRIPTION OF THE REFERENCE NUMERALS:

[0028] 1. First foundation base; 11. First framework steel pipe herringbone column; 12. First installation groove; 121. First groove; 2. Second foundation base; 21. Second framework steel pipe herringbone column; 22. Second installation groove; 221. Second groove; 3. Concrete cushion; 41. First boss; 42. Second boss; 5. First fixing component; 50. Second fixing component; 51. First annular hoop; 52. First L-shaped angle steel; 6. Outdoor design ground level; 7. Non-shrinking concrete. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Hereinafter, the exemplary embodiments of the present utility model will be described in more detail with reference to the drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present utility model can be more thoroughly understood and the scope of the present utility model can be fully conveyed to those skilled in the art.

[0030] As Figures 1 to 2 shown, an embodiment of the present utility model provides a substation framework foundation, including:

[0031] A first foundation base 1, on the top of which there is a first installation groove 12 for fixing the first framework steel pipe herringbone column 11;

[0032] A second foundation base 2 arranged opposite to the first foundation base 1, on the top of which there is a second installation groove 22 for fixing the second framework steel pipe herringbone column 21;

[0033] A plurality of first grooves 121 are arranged on the inner wall of the first installation groove 12;

[0034] The inner wall of the second installation groove 22 is provided with a plurality of second grooves 221.

[0035] In this embodiment, a plurality of the first grooves 121 form a first serrated groove on the inner wall of the first installation groove 12; a plurality of the second grooves 221 form a second serrated groove on the inner wall of the second installation groove 22; in this embodiment, according to the uplift force borne by the framed steel pipe herringbone columns (the first framed steel pipe herringbone column 11 and the second framed steel pipe herringbone column 21), the dimensions of the first serrated groove and the second serrated groove and the required concrete grade can be determined by calculation, ensuring that the anti-uplift bearing capacity at the cup mouth is greater than the foundation gravity, the foundation gravity is greater than the uplift force, and a certain safety margin is reserved; as Figure 1 shown, in the use state, first, at a preset position below the outdoor design ground level 6 at a preset position, the foundation bases (the first foundation base 1 and the second foundation base 2) are poured for the first time with preset concrete, and then the first framed steel pipe herringbone column 11 and the second framed steel pipe herringbone column 21 are respectively placed in the installation grooves of the corresponding foundation bases, and secondary grouting is carried out, so that the framed steel pipe herringbone columns are fixed in the corresponding installation grooves. At the same time, when grouting, the secondary grouting material is embedded in the grooves of the installation grooves (the secondary grouting material uses non-shrinkage concrete 7 and is vibrated compactly), so that the concrete after the second grouting is in a biting shape with the side wall of the installation groove, turning the adhesive force between the concretes into the common bearing of shear force and adhesive force, thereby increasing the bearing capacity of the substation framed structure foundation by 1.5 times and improving the anti-uplift bearing capacity of the foundation; the substation framed structure foundation described in the present invention realizes turning the adhesive force between the concretes into the common bearing of shear force and adhesive force by adjusting the cup mouth of the foundation from a planar shape to a serrated shape, thereby improving the anti-uplift bearing capacity of the substation framed structure foundation.

[0036] In an alternative embodiment of the present invention, a first boss 41 is provided on the top of the first foundation base 1, and the first installation groove 12 is arranged in the first boss 41 and the first foundation base 1.

[0037] A second boss 42 is provided on the top of the second foundation base 2, and the second installation groove 22 is arranged in the second boss 42 and the second foundation base 2.

[0038] The diameters of the openings of the first installation groove 12 and the second installation groove 22 are both larger than the diameters of their bottoms.

[0039] In this embodiment, the foundation base is of a cup mouth type design, further improving the bearing capacity of the substation framed structure foundation.

[0040] In an alternative embodiment of the present invention, the substation framed structure foundation further includes:

[0041] At least one first fixing component 5 provided at the first end of the first structural steel pipe herringbone column 11, and the first end of the first structural steel pipe herringbone column 11 is provided in the first installation groove 12;

[0042] At least one second fixing component 50 provided at the first end of the second structural steel pipe herringbone column 21, and the first end of the second structural steel pipe herringbone column 21 is provided in the second installation groove 22.

[0043] The first fixing component 5 includes:

[0044] A first annular hoop 51 and a plurality of first L-shaped angle steels 52 integrally formed with the first annular hoop 51 and provided around the first annular hoop 51;

[0045] Wherein, the first annular hoop 51 is fixedly connected to the first end of the first structural steel pipe herringbone column 11 and is provided in the first groove 121.

[0046] The second fixing component 50 includes:

[0047] A second annular hoop and a plurality of second L-shaped angle steels integrally formed with the second annular hoop and provided around the second annular hoop;

[0048] Wherein, the second annular hoop is fixedly connected to the first end of the second structural steel pipe herringbone column 21 and is provided in the second groove 221.

[0049] In this embodiment, the annular hoop is sleeved on the structural steel pipe herringbone column and welded to the structural steel pipe herringbone column. There are two L-shaped angle steels provided on the annular hoop, and the two L-shaped angle steels are arranged oppositely on the annular hoop; when the annular hoop is fixed to the structural steel pipe herringbone column, one flange of the L-shaped angle steel is closely attached to the herringbone column, and the other flange penetrates into the concrete. Through this design, the bearing capacity provided by the bonding strength between the concrete and the structural steel pipe herringbone column is changed to be provided by the shear strength of the concrete. This design can increase the bearing capacity of the substation frame foundation by 2 times; in a preferred embodiment, both the first fixing component 5 and the second fixing component 50 are provided in two groups. This design can change the bearing capacity provided by the bonding strength to be provided by the shear strength of the concrete, further improving the uplift bearing capacity. At the same time, the welding workload is reduced, the uplift bearing capacity of the substation frame foundation is improved, and the application range of the cup foundation in the frame herringbone column is further expanded.

[0050] In an alternative embodiment of the present invention, concrete cushions 3 are provided at the bottoms of both the first foundation base 1 and the second foundation base 2. The design of the concrete cushions 3 can enhance the adhesion between the foundation base and the ground and prevent the foundation base from sinking.

[0051] For the substation framework foundation of the present utility model, by adopting a serrated shape on the side wall of the cup mouth, the anti-pulling bearing capacity between the secondary grouting and the foundation is improved; by welding two L50×5 angle steel hoop rings on the herringbone column, the anti-pulling bearing capacity between the herringbone column and the secondary grouting is improved.

[0052] The above is the preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A substation framework foundation, characterized in that Including: A first basic base (1), on the top of the basic base (1) there is a first installation groove (12) for fixing the first framed steel pipe guy column (11); A second basic base (2) arranged opposite to the first basic base (1), on the top of the second basic base (2) there is a second installation groove (22) for fixing the second framed steel pipe guy column (21); On the inner wall of the first installation groove (12) there are a plurality of first grooves (121); On the inner wall of the second installation groove (22) there are a plurality of second grooves (221).

2. The substation framework foundation according to claim 1, wherein, On the top of the first basic base (1) there is a first boss (41), and the first installation groove (12) is arranged within the first boss (41) and the first basic base (1).

3. The substation framework foundation according to claim 1, characterized in that, On the top of the second basic base (2) there is a second boss (42), and the second installation groove (22) is arranged within the second boss (42) and the second basic base (2).

4. The substation framework foundation according to claim 1, characterized in that The notch diameters of both the first installation groove (12) and the second installation groove (22) are larger than the bottom diameters of the grooves.

5. The substation framework foundation according to claim 1, characterized in that, Also included is: At least one first fixing component (5) arranged at the first end of the first framed steel pipe guy column (11), and the first end of the first framed steel pipe guy column (11) is arranged within the first installation groove (12); At least one second fixing component (50) arranged at the first end of the second framed steel pipe guy column (21), and the first end of the second framed steel pipe guy column (21) is arranged within the second installation groove (22).

6. The substation framework foundation according to claim 5, characterized in that The first fixing component (5) includes: A first annular hoop (51) and a plurality of first L-shaped angle steels (52) integrally formed with the first annular hoop (51) and arranged around the first annular hoop (51); Wherein, the first annular hoop (51) is fixedly connected to the first end of the first framed steel pipe guy column (11) and is arranged within the first groove (121).

7. The substation framework foundation according to claim 5, characterized in that, The second fixing component (50) includes: A second annular hoop and a plurality of second L-shaped angle steels integrally formed with the second annular hoop and arranged around the second annular hoop; Wherein, the second annular hoop is fixedly connected to the first end of the second framed steel pipe guy column (21) and is arranged within the second groove (221).

8. The substation framework foundation according to claim 1, characterized in that, Concrete cushions (3) are arranged at the bottoms of both the first basic base (1) and the second basic base (2).

Images