GIS foundation for transformer substation

Abstract

The utility model provides a GIS (Gas Insulated Switchgear) foundation for a transformer substation, which comprises a first raft plate component, a second raft plate component and a third raft plate component, the two second raft plate parts are symmetrically arranged on the two sides of the first raft plate part, and a first protruding part is formed on the upper portion of one side of each second raft plate part; a second open slot is formed in the top of the second raft plate component; second protruding parts are symmetrically arranged on the two sides of the bottom of the buttress, and the buttress is stacked above the first raft plate component and the second raft plate component; a first connecting piece is pre-buried in the first raft plate component and extends to the outer side of the first raft plate component; a first mounting hole is formed in the second raft plate component, the first connecting piece penetrates through the first mounting hole to connect the first raft plate component with the second raft plate component, and the first raft plate component, the second raft plate component and the buttress are all prefabricated components. The first raft plate part, the second raft plate part and the buttresses are all prefabricated parts, all the parts are spliced on site, and the construction period can be shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer substation equipment foundation, and in particular relates to a GIS foundation for a transformer substation. Background Art

[0002] With the rapid development of the power industry, especially the rapid rise of the new energy power generation and energy storage industries, the overall scale and number of substation projects have continued to rise.

[0003] GIS equipment is a crucial component of substations. It seals key primary equipment within the substation, such as circuit breakers, disconnectors, and busbars, in a metal container. Using SF6 gas as the insulating medium, GIS offers advantages such as a small footprint, high reliability, and strong environmental adaptability. GIS equipment is installed on a GIS foundation. Therefore, ensuring the stability and reliability of the GIS equipment requires a robust foundation.

[0004] Currently, most substation GIS foundation construction operations primarily rely on traditional on-site concrete pouring. Construction procedures include scaffolding erection, formwork fabrication and support, rebar fabrication and tying, concrete pouring and curing, and formwork removal. This complex construction process results in numerous steps, material waste, high labor requirements, environmental pollution, weather-related impacts, and significant difficulties in on-site quality management, making it difficult to guarantee both construction time and quality. Therefore, the present invention aims to design a technology that can shorten the construction period of GIS foundations. Utility Model Content

[0005] The utility model provides a GIS foundation for a transformer substation, which can shorten the construction period of the GIS foundation.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] In one aspect, the present invention provides a GIS foundation for a substation, comprising:

[0008] a first raft component, wherein upper portions of both sides of the first raft component are formed with first open grooves;

[0009] a second raft component, wherein two second raft components are provided, and the two second raft components are symmetrically arranged on both sides of the first raft component; a first protrusion is formed on an upper portion of one side of the second raft component, the first protrusion is adapted to the first opening groove, and the first protrusion extends into the first opening groove, so that the second raft component and the first raft component are spliced ​​together; a second opening groove is formed on the top of the second raft component;

[0010] A buttress, wherein second protrusions are symmetrically provided on both sides of the bottom of the buttress, the second protrusions being adapted to the second opening groove, the buttress extending into the second opening groove through the second protrusions and being stacked above the first raft component and the second raft component;

[0011] In which, a first connecting member is pre-embedded in the interior of the first raft component and located below the first opening groove, and the end of the first connecting member extends to the outside of the first raft component; a first mounting hole is formed on the second raft component at the first raised portion, and the first connecting member passes through the first mounting hole to connect the first raft component and the second raft component, and the first raft component, the second raft component and the pier are all prefabricated components.

[0012] In some embodiments of the present application, the GIS infrastructure for a substation further includes:

[0013] A second connecting member is provided with a second mounting hole on the upper portion of the second raft component, and a third mounting hole is formed on the pier, wherein the third mounting hole corresponds to the position of the second mounting hole, and the second connecting member passes through the third mounting hole and the second mounting hole in sequence to connect the pier and the second raft component together.

[0014] In some embodiments of the present application, an inner threaded sleeve is embedded in the second mounting hole, and the bottom of the second connecting member is threadedly connected to the inner threaded sleeve.

[0015] In some embodiments of the present application, a first recess is formed on the upper surface of the pier at a position corresponding to the third mounting hole, the second connecting member extends into the first recess, and the second connecting member does not protrude from the upper surface of the pier.

[0016] In some embodiments of the present application, the first recessed portion, the third mounting hole, and the second mounting hole are filled with grouting material.

[0017] In some embodiments of the present application, a steel plate is pre-embedded on the top of the pier, and an avoidance hole is formed on the steel plate at a position corresponding to the third mounting hole.

[0018] In some embodiments of the present application, the buttress is in the form of an elongated strip, and a plurality of the buttresses are provided, and the plurality of the buttresses are spaced apart and arranged above the first raft component and the second raft component.

[0019] In some embodiments of the present application, a second recess is formed on the upper surface of the second raft component at a position corresponding to the first mounting hole, the first connecting member extends into the second recess, and the first connecting member does not protrude from the upper surface of the second raft component.

[0020] In some embodiments of the present application, the second recessed portion and the first mounting hole are filled with grouting material.

[0021] In some embodiments of the present application, the pier, the first raft component and the second raft component are all made of reinforced concrete material.

[0022] Compared with the prior art, the advantages and positive effects of the present invention are as follows: the GIS foundation for the substation includes a first raft component, a second raft component and a pier; the first raft component, the second raft component and the pier are all prefabricated components, which can be factory-produced and have controllable quality, which is conducive to ensuring the quality of the GIS foundation; each component is assembled on site, avoiding large-volume concrete pouring, which is conducive to shortening the construction period; by pre-embedding a first connecting member inside the first raft component, the first connecting member strings the first raft component and the second raft component together, thereby improving the connection strength of the first raft component and the second raft component; the pier is arranged above the first raft component and the second raft component, and can provide effective support for the GIS equipment installed thereon. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Figure 1 A top view of the GIS foundation for a substation provided by the utility model;

[0025] Figure 2 This is a main view of the GIS foundation for a substation provided by the utility model;

[0026] Figure 3 This is one of the internal structure diagrams of the pier for the GIS foundation of the substation provided by the utility model;

[0027] Figure 4 This is the second schematic diagram of the internal structure of the pier for the GIS foundation of the substation provided by the utility model;

[0028] Figure 5 This is one of the structural schematic diagrams of the first raft assembly and the second raft assembly for the GIS foundation of the substation provided by the utility model;

[0029] Figure 6This is a second structural schematic diagram of the first and second raft assemblies of the GIS foundation for a substation provided by the present invention;

[0030] Figure 7 A schematic diagram of the internal structure of the second raft assembly of the GIS foundation for a substation provided by the present invention;

[0031] Figure 8 This is a schematic diagram of the internal structure of the first raft assembly for the GIS foundation of a substation provided by the utility model.

[0032] Description of reference numerals:

[0033] 1. First raft component; 11. First opening groove; 12. First connecting member;

[0034] 2. Second raft component; 21. First protrusion; 22. Second opening groove; 23. First mounting hole; 24. Second mounting hole; 241. Internal threaded sleeve; 25. Second recessed portion;

[0035] 3. Buttress; 31. Second raised portion; 32. Third mounting hole; 33. First recessed portion; 34. Steel plate;

[0036] 4. Second connecting piece;

[0037] 5. Concrete cushion;

[0038] 6. The third connecting piece. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as limiting the utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0041] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; they can refer to mechanical connection or electrical connection; they can refer to direct connection or indirect connection through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will recognize the application of other processes and / or the use of other materials.

[0044] A GIS, or gas-insulated substation, combines all primary equipment in a substation, excluding the transformer, including circuit breakers, busbars, disconnectors, voltage transformers, current transformers, lightning arresters, bushings, and other high-voltage electrical equipment. These equipment is sealed within a pipe tree composed of metal pipes and casings. SF6 gas is used as the insulating medium throughout the substation, and all high-voltage electrical components are sealed within a grounded metal cylinder. No switches, lines, or terminals are visible from the outside. The foundation is crucial for the stable operation of the entire GIS equipment. For example, the foundation must be able to support the weight of the GIS equipment and remain stable during operation to prevent problems such as the equipment tilting.

[0045] Currently, the existing GIS infrastructure mainly adopts on-site wet operations, which results in a long construction period and makes it difficult to guarantee the project quality.

[0046] In one aspect, combined Figures 1 to 8 As shown, an embodiment of the present disclosure provides a GIS foundation for a substation, and the GIS foundation for a substation includes a first raft component 1 , a second raft component 2 and a buttress 3 .

[0047] First open grooves 11 are formed at upper portions of both sides of the first raft member 1 .

[0048] Specific, combined Figure 2 and Figure 5 As shown, the transverse cross section of the first raft component 1 is a convex U-shaped structure.

[0049] The second raft component 2 is a rectangular structure, and two second raft components 2 are symmetrically arranged on both sides of the first raft component 1. A first protrusion 21 is formed on the upper part of one side of the second raft component 2. The first protrusion 21 is adapted to the first opening groove 11, and the first protrusion 21 extends into the first opening groove 11, so that the second raft component 2 is spliced ​​together with the first raft component 1; a second opening groove 22 is formed on the top of the second raft component 2.

[0050] The bottom of the pier 3 is symmetrically provided with second protrusions 31 on both sides. The second protrusions 31 are adapted to the second opening groove 22. The pier 3 extends into the second opening groove 22 through the second protrusions 31 and is stacked above the first raft component 1 and the second raft component 2.

[0051] Among them, a first connecting member 12 is pre-embedded in the interior of the first raft component 1 below the first opening groove 11, and the end of the first connecting member 12 extends to the outside of the first raft component 1; a first mounting hole 23 is formed at the first raised portion 21 on the second raft component 2, and the first connecting member 12 passes through the first mounting hole 23 to connect the first raft component 1 and the second raft component 2. The first raft component 1, the second raft component 2 and the pier 3 are all prefabricated components.

[0052] Specifically, the GIS foundation for the substation includes a first raft component 1, a second raft component 2 and a buttress 3. The first raft component 1, the second raft component 2 and the buttress 3 are all prefabricated components, which is conducive to improving the prefabrication degree of the substation.

[0053] At the same time, each prefabricated component can be produced in a factory, which saves energy and reduces consumption, is green and environmentally friendly, and has controllable quality, which is conducive to ensuring the quality of the GIS foundation; each component is assembled mechanized on-site to realize an assembled construction mode, avoiding large-volume concrete pouring, which is conducive to shortening the construction period.

[0054] In addition, by pre-embedding the first connecting member 12 inside the first raft component 1, the first connecting member 12 strings the first raft component 1 and the second raft component 2 together, thereby improving the connection strength of the first raft component 1 and the second raft component 2; the pier 3 is arranged above the first raft component 1 and the second raft component 2, and can provide effective support for the GIS equipment installed above it.

[0055] A first opening groove 11 is formed on the first raft component 1, and a first protrusion 21 is formed on the second raft component 2. The first protrusion 21 is adapted to the first opening groove 11, so that part of the structure of the first raft component 1 and part of the structure of the second raft component 2 are stacked together, providing a structural basis for the installation of the first connecting member 12.

[0056] Of course, the first opening groove 11 can also be located on the upper part of one side of the second raft component 2, the first protrusion 21 is located on the upper parts of both sides of the first raft component 1, and the first connecting member 12 is pre-buried below the first opening groove 11 on the second raft component 2. The structure is similar to the above and will not be repeated here.

[0057] In the embodiment of the present disclosure, the GIS foundation is arranged on the concrete cushion layer 5 , that is, the first raft component 1 and the second raft component 2 are arranged on the concrete cushion layer 5 .

[0058] As the name implies, the concrete cushion layer 5 is made of concrete material. The concrete cushion layer 5 can fill the unevenness and concave-convexity on the foundation, thereby making the foundation more uniform and stable, and helping to ensure that the surface is flat and smooth, thereby providing better support.

[0059] In some embodiments of the present application, in order to facilitate the lifting of the first raft component 1, the second raft component 2 and the pier 3, the sides of the first raft component 1, the second raft component 2 and the pier 3 are provided with lifting rings, and the two ends of the lifting rings are pre-buried inside the interior of each component, and each component has a groove formed at the position of the lifting ring, which does not protrude from the plane where it is located, so that the lifting ring will not affect the placement of the first raft component 1, the second raft component 2 and the pier 3.

[0060] In some embodiments of the present application, the second protrusion 31 is a block-shaped structure.

[0061] In some embodiments of the present application, a stopper is formed at the end of the first connector 12 , which can improve the connection strength between the first connector 12 and the first raft component 1 .

[0062] Exemplarily, the first connecting member 12 includes a screw.

[0063] During assembly, after the screw rod passes through the first mounting hole 23 , a nut is screwed onto the upper end of the screw rod.

[0064] In some embodiments of the present application, the GIS foundation for a substation further includes a second connecting member 4 .

[0065] A second mounting hole 24 is formed on the upper portion of the second raft component 2, and a third mounting hole 32 is formed on the pier 3. The third mounting hole 32 corresponds to the position of the second mounting hole 24. The second connecting member 4 passes through the third mounting hole 32 and the second mounting hole 24 in sequence to connect the pier 3 and the second raft component 2 together.

[0066] Specifically, the second mounting hole 24 on the second raft component 2 corresponds to the position of the third mounting hole 32 on the pier 3, and the second connecting member 4 passes through the third mounting hole 32 and the second mounting hole 24 in sequence to connect the pier 3 and the second raft component 2 together, which is beneficial to improving the connection strength between the second raft component 2 and the pier 3.

[0067] In some embodiments of the present application, an inner thread sleeve 241 is embedded in the second mounting hole 24 , and the bottom of the second connecting member 4 is threadedly connected to the inner thread sleeve 241 .

[0068] Specifically, by threading the bottom of the second connecting member 4 to the inner threaded sleeve 241, the inner threaded sleeve 241 has high hardness and corrosion resistance, strong bearing capacity, and can increase the connection strength.

[0069] In some embodiments of the present application, a first recess 33 is formed on the upper surface of the pier 3 at a position corresponding to the third mounting hole 32 , and the second connecting member 4 extends into the first recess 33 , and the second connecting member 4 does not protrude from the upper surface of the pier 3 .

[0070] Specifically, the second connecting member 4 extends into the first recessed portion 33 and does not protrude from the upper surface of the buttress 3 , thereby preventing the second connecting member 4 from interfering with the installation of GIS equipment above the buttress 3 .

[0071] In some embodiments of the present application, the first recessed portion 33 , the third mounting hole 32 , and the second mounting hole 24 are filled with grouting material.

[0072] Specifically, by filling the first recessed portion 33, the third mounting hole 32 and the second mounting hole 24 with grouting material, on the one hand, the flatness of the upper surface of the pier 3 can be ensured, and at the same time, the second connecting member 4 can be protected to prevent it from rusting and falling off.

[0073] In some embodiments of the present application, a steel plate 34 is pre-embedded on the top of the pier 3 , and an avoidance hole is formed on the steel plate 34 at a position corresponding to the third mounting hole 32 .

[0074] Specifically, by pre-embedding a steel plate 34 on the top of the pier 3, it is convenient to install GIS equipment on the top of the pier 3; by forming an avoidance hole at a position corresponding to the third mounting hole 32 on the steel plate 34, it is convenient for the second connecting member 4 to pass through the steel plate 34 to connect the pier 3 and the second raft component 2 together.

[0075] In some embodiments of the present application, the buttress 3 is in the form of an elongated strip, and a plurality of buttresses 3 are provided. The plurality of buttresses 3 are arranged above the first raft component 1 and the second raft component 2 at intervals.

[0076] Specifically, by arranging a plurality of buttresses 3 above the first raft component 1 and the second raft component 2 at intervals, the load-bearing capacity and stability can be improved.

[0077] In some embodiments of the present application, Figure 6 As shown, a second recess 25 is formed on the upper surface of the second raft component 2 at a position corresponding to the first mounting hole 23 , and the first connector 12 extends into the second recess 25 , and the first connector 12 does not protrude from the upper surface of the second raft component 2 .

[0078] Specifically, a second recess 25 is formed on the upper surface of the second raft component 2 at a position corresponding to the first mounting hole 23, and the first connecting member 12 extends into the second recess 25. The first connecting member 12 does not protrude from the upper edge of the second raft component 2, so that the first connecting member 12 will not interfere with the stability of the pier 3 stacked above the second raft assembly.

[0079] In some embodiments of the present application, the second recessed portion 25 and the first mounting hole 23 are filled with grouting material.

[0080] Specifically, by filling the second recess 25 and the first mounting hole 23 with grouting material, the flatness of the surface of the second raft component 2 can be ensured, and the second connector 4 can be protected from rust; at the same time, the connection stability between the second connector 4 and the second raft component 2 is improved.

[0081] In the disclosed embodiment, the grouting material is made of high-strength materials as aggregates, cement as a binder, and supplemented with high-fluidity, micro-expansion, and anti-segregation materials. A certain amount of water is added to the construction site and stirred evenly before use.

[0082] The grouting material has the characteristics of good self-flow, rapid hardening, early strength, high strength, no shrinkage, slight expansion, non-toxic, harmless, non-aging, no pollution to water quality and the surrounding environment, good self-tightness, and rust resistance. In terms of construction, it has the advantages of reliable quality, reduced costs, shortened construction period and easy use.

[0083] In order to improve the connection strength between the first raft component 1 and the buttress 3, the middle part of the first raft component 1 and the buttress 3 is connected by a third connector 6. The installation structure of the third connector 6 is similar to that of the second connector 4 and will not be repeated here.

[0084] In some embodiments of the present application, Figure 3 、 Figure 4 、 Figure 7 and Figure 8 As shown, the buttress 3, the first raft component 1 and the second raft component 2 are all made of reinforced concrete.

[0085] Specifically, by making the buttress 3, the first raft component 1 and the second raft component 2 all of reinforced concrete materials, the structure has high strength and is easy to manufacture.

[0086] Exemplarily, the construction process of the GIS foundation for a substation is as follows:

[0087] The first step is to prefabricate the first raft component 1, the second raft component 2 and the buttress 3 for standby use;

[0088] The second step is to measure and lay out the lines on site, excavate the foundation pit, and construct the concrete cushion layer 5;

[0089] The third step is to transport the prefabricated first raft component 1, the second raft component 2 and the buttress 3 to the site;

[0090] Step 4: hoist the first raft component 1 to a suitable position, and then hoist the second raft component 2, so that the first mounting hole 23 on the second raft component 2 passes through the first connecting piece 12 on the first raft component 1, and the first protrusion 21 extends into the first opening groove 11, and grouting material is poured into the first mounting hole 23. After the nut is screwed on the top of the first connecting piece 12, the grouting material is poured into the second recessed portion 25 and filled and smoothed;

[0091] Step 5: Hoist the buttress 3 above the first raft component 1 and the second raft component 2, so that the second protrusion 31 at the bottom of the buttress 3 extends into the second open groove 22 at the top of the second raft component 2; insert the second connector 4 through the third mounting hole 32 and the second mounting hole 24 in sequence and threadedly connect them to the inner threaded sleeve 241 in the second raft component 2; continue to pour grouting material into the third mounting hole 32; then tighten the nut on the top of the second connector 4; then pour grouting material into the first recessed portion 33 and fill and smooth it;

[0092] Step 5: Acceptance.

[0093] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0094] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A GIS foundation for a substation, characterized in that: include: a first raft component, wherein upper portions of both sides of the first raft component are formed with first open grooves; a second raft component, wherein two second raft components are provided, and the two second raft components are symmetrically arranged on both sides of the first raft component; a first protrusion is formed on an upper portion of one side of the second raft component, the first protrusion is adapted to the first opening groove, and the first protrusion extends into the first opening groove, so that the second raft component and the first raft component are spliced ​​together; a second opening groove is formed on the top of the second raft component; A buttress, wherein second protrusions are symmetrically provided on both sides of the bottom of the buttress, the second protrusions being adapted to the second opening groove, the buttress extending into the second opening groove through the second protrusions and being stacked above the first raft component and the second raft component; In which, a first connecting member is pre-embedded in the interior of the first raft component and located below the first opening groove, and the end of the first connecting member extends to the outside of the first raft component; a first mounting hole is formed on the second raft component at the first raised portion, and the first connecting member passes through the first mounting hole to connect the first raft component and the second raft component, and the first raft component, the second raft component and the pier are all prefabricated components.

2. The GIS foundation for a substation according to claim 1, characterized in that: The GIS foundation for substations also includes: A second connecting member is provided with a second mounting hole on the upper portion of the second raft component, and a third mounting hole is formed on the pier, wherein the third mounting hole corresponds to the position of the second mounting hole, and the second connecting member passes through the third mounting hole and the second mounting hole in sequence to connect the pier and the second raft component together.

3. The GIS foundation for a substation according to claim 2, characterized in that: An inner thread sleeve is embedded in the second mounting hole, and the bottom of the second connecting member is threadedly connected to the inner thread sleeve.

4. The GIS foundation for a substation according to claim 2, characterized in that: A first recessed portion is formed on the upper surface of the pier at a position corresponding to the third mounting hole, the second connecting member extends into the first recessed portion, and the second connecting member does not protrude from the upper surface of the pier.

5. The GIS foundation for a substation according to claim 4, characterized in that: The first recessed portion, the third mounting hole and the second mounting hole are filled with grouting material.

6. The GIS foundation for a substation according to claim 2, characterized in that: A steel plate is pre-embedded on the top of the pier, and an avoidance hole is formed on the steel plate at a position corresponding to the third mounting hole.

7. The GIS foundation for a substation according to claim 1, characterized in that: The buttress is in a long strip structure, and a plurality of the buttresses are provided. The plurality of buttresses are arranged above the first raft component and the second raft component at intervals.

8. The GIS foundation for a substation according to claim 1, characterized in that: A second recessed portion is formed on the upper surface of the second raft component at a position corresponding to the first mounting hole, the first connector extends into the second recessed portion, and the first connector does not protrude from the upper surface of the second raft component.

9. The GIS foundation for a substation according to claim 8, characterized in that: The second recessed portion and the first mounting hole are filled with grouting material.

10. The GIS foundation for a substation according to claim 1, characterized in that: The buttress, the first raft component and the second raft component are all made of reinforced concrete material.

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