Steel structure assembly type energy storage cabin base

Abstract

The utility model provides a steel structure assembly type energy storage cabin base which comprises a plurality of sets of single-truss steel frames, and the adjacent single-truss steel frames are rigidly connected through steel coupling beams. The single steel frame consists of a steel frame column, a steel frame beam, a first end plate and a second end plate; the two ends of the steel frame beam are each rigidly connected with a steel frame column, the steel frame columns are perpendicular to the steel frame beam, second end plates are fixed to the tops of the steel frame columns, and first end plates are fixed to the bottoms of the steel frame columns. The bottom of the steel frame column extends to the position below the ground, the first end plate is connected with a foundation bolt fixed to the concrete base in advance, an adjusting nut and a nut are arranged on the foundation bolt, and the space between the first end plate and the concrete base is filled with shrinkage-free fine aggregate concrete or a grouting material layer. And an anti-corrosion structure is arranged at the contact part of the steel frame column and a soil body. According to the energy storage cabin foundation, the construction period of the energy storage cabin foundation can be remarkably shortened, energy is saved, carbon is reduced, and the recycling value of the energy storage cabin foundation is improved.

Description

Technical Field

[0001] This utility model relates to the field of energy storage power stations in new power systems and the field of prefabricated steel structure technology, and in particular to a prefabricated steel structure base for an energy storage compartment. Background Technology

[0002] Currently, energy storage power station projects in new power systems mainly include battery compartments, PCS (Power Conveyor System) compartments, and booster stations. The battery compartments and PCS compartments are primarily in the form of energy storage compartments and are not considered vibrating equipment. These energy storage compartments are mostly placed outdoors on specially designed concrete foundations. Common concrete foundations include concrete box-type foundations and concrete frame foundations. Concrete frame foundations are equipped with concrete beams and columns, and the energy storage compartments are installed on top of the beams and columns of the concrete frame foundation or on top of the vertical walls of the concrete box-type foundation. However, as batteries are upgraded, the size and specifications of the battery compartments also change, and the concrete foundations cannot be flexibly modified to accommodate changes in battery compartment size. Furthermore, if an energy storage power station is abandoned due to poor operation or the end of its lifespan, the concrete foundations of each compartment will remain in the soil for a long time, rendering the site unusable. Removing the concrete foundations would be extremely time-consuming and labor-intensive, as the foundation slab, frame columns, and frame beams or vertical walls are a single, cast-in-place structure. Moreover, the removed reinforced concrete would be considered construction waste with low utilization value. Currently, the construction of concrete energy storage compartment foundations typically employs cast-in-place techniques, requiring multiple steps such as reinforcing steel binding, formwork erection and dismantling, pouring, and curing, resulting in a slow construction speed.

[0003] Furthermore, although some prefabricated steel structure foundations have been disclosed in other fields, the frame columns of these foundations currently rest on short concrete foundation columns. Considering the large load on the superstructure, significant uplift forces are expected under load combinations controlled by seismic or wind loads. This results in long vertical anchorage lengths for the anchor bolts of the prefabricated steel structure foundation, requiring pre-embedded anchorages in the concrete foundation and short columns. Simultaneously, the self-weight of the concrete foundation and short columns is needed to resist the uplift forces generated by the superstructure. However, in the energy storage field, energy storage pods are relatively small, with battery compartments and PCS compartments mostly under 4 meters in height. Most are single-layered, with height-to-width ratios generally less than 1.4. Extensive modeling and analysis have shown that uplift forces will not occur under load combinations controlled by seismic or wind loads. Therefore, the prefabricated steel structure foundations disclosed in other fields are not suitable for energy storage pods. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the existing technology and provide a steel structure prefabricated energy storage cabin base.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] This utility model provides a steel structure prefabricated energy storage tank base, including several sets of single steel frames, which are rigidly connected to each other by steel connecting beams. Each single steel frame consists of steel frame columns, steel frame beams, a first end plate, and a second end plate. A steel frame column is rigidly connected to each end of the steel frame beam. The steel frame column is perpendicular to the steel frame beam, and the second end plate is fixed to the top of the steel frame column, while the first end plate is fixed to the bottom. The bottom of the steel frame column extends below the ground, and the first end plate is connected to anchor bolts pre-fixed to a concrete base. A layer of non-shrinkage fine aggregate concrete or grout is filled between the first end plate and the concrete base. The part of the steel frame column in contact with the soil is treated with anti-corrosion measures.

[0007] As a further technical solution, the corrosion protection treatment is a rigid corrosion protection treatment.

[0008] As a further technical solution, the rigid anti-corrosion treatment includes welding studs to the outside of the steel frame column and then constructing concrete on the outside of the steel frame column.

[0009] As a further technical solution, the stud is made of stainless steel and coated with anti-corrosion paint.

[0010] As a further technical solution, the corrosion protection treatment is a flexible corrosion protection treatment.

[0011] As a further technical solution, the flexible anti-corrosion treatment involves applying an anti-corrosion coating layer or wrapping a composite flexible anti-corrosion membrane on the outer side of the part of the steel frame column that comes into contact with the soil.

[0012] As a further technical solution, the cross-sectional shape of the steel frame column can be a circular cross-section steel pipe column or a rectangular cross-section steel pipe column.

[0013] As a further technical solution, the connection between the bottom of the steel frame column and the top of the concrete base is an anchor bolt connection. The anchor bolt is equipped with an adjusting nut and a bolt. The adjusting nut is located below the first end plate and is used to adjust the elevation of the top of the steel structure prefabricated energy storage tank base. The bolt is located above the first end plate and is used to fix the position of the first end plate.

[0014] As a further technical solution, the steel frame column is provided with a nut and wrench hole at one end near the foundation. After adjusting the top elevation of the steel structure prefabricated energy storage tank base with an adjusting nut, a wrench is used to tighten the nut through the wrench hole. Then, the wrench hole is sealed with a wrench hole sealing plate and welded firmly.

[0015] As a further technical solution, a second end plate is welded to the upper end of the steel frame column; and a first end plate is welded to the lower end of the steel frame column.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] 1. Compared to existing concrete foundations, the steel-structure prefabricated energy storage tank base of this utility model significantly reduces construction time. Components can be fabricated in a factory, transported to the site, and then simply installed, saving time and manpower by eliminating the need for rebar tying, formwork erection and dismantling, pouring, and curing. The construction process is energy-efficient and environmentally friendly, reducing carbon emissions. In the event of changes in tank dimensions due to battery upgrades, requiring adjustments to the base beam arrangement, this utility model allows for the addition of new base beams on the inner or outer side of the existing beams. These new steel-structure base beams can be directly welded or bolted to the steel-structure prefabricated energy storage tank base, making modifications flexible and convenient. If the energy storage power station is abandoned due to the end of its lifespan, the steel-structure prefabricated energy storage tank base of this utility model allows for rapid dismantling of beams and columns, minimizing land loss. Furthermore, the dismantled steel components can be reused or traded, possessing high reuse value. Moreover, this invention, equipped with an adjusting nut, allows for precise adjustment of the base's top elevation.

[0018] 2. Compared with prefabricated steel structure buildings and structures in other fields, the advantages of this utility model's prefabricated steel structure energy storage tank base are as follows: The steel frame columns of the prefabricated steel structure energy storage tank base extend deep below the ground and are directly connected to the concrete base, eliminating the need for short concrete columns. The energy storage tank has a relatively small height; the battery compartment and PCS compartment are mostly below 4m in height, and most are placed in a single layer with a height-to-width ratio of less than 1.4. After extensive modeling and calculation analysis, no uplift force will be generated under load combinations controlled by seismic force or wind load. At the same time, the anchor bolts are not used as load-bearing components after the overall structure is completed. The bearing medium at the anchor bolts is mainly non-shrink fine aggregate concrete or grout, so the length of the anchor bolts is not required. Since no uplift force is generated, there is no need to increase the weight of the concrete foundation itself, nor is it necessary to configure short columns to offset the uplift force.

[0019] 3. Regarding resistance to horizontal shear force, this invention primarily relies on the frictional forces between the first end plate of the steel frame column and the non-shrinkage fine aggregate concrete layer or grout layer, and between the non-shrinkage fine aggregate concrete layer or grout layer and the concrete base. Because the energy storage pod has a low center of gravity and a small wind load-bearing area, the horizontal shear force generated is relatively small under both seismic and wind load-controlled load combinations. Therefore, friction alone is sufficient to resist the horizontal shear force generated under the load combinations.

[0020] 4. In terms of corrosion prevention, this utility model proposes a relatively low-cost method to solve the corrosion problem of underground steel structures on land, namely the rigid corrosion prevention method in this utility model. Attached Figure Description

[0021] Figure 1 The overall effect diagram of the energy storage unit that integrates the steel structure prefabricated energy storage cabin base into this utility model.

[0022] Figure 2 This is a perspective view of the steel structure prefabricated energy storage compartment base body in this utility model.

[0023] Figure 3 for Figure 2 A top-down plan view.

[0024] Figure 4 for Figure 3 A cross-sectional view along line A-A.

[0025] Figure 5 for Figure 3 Cross-sectional view along line B-B.

[0026] Figure 6 This is a drawing of steel frame columns and connected components below ground level that employ rigid anti-corrosion measures, with some elements in perspective.

[0027] Figure 7 This is a drawing of steel frame columns and connected components below ground level that employ flexible anti-corrosion measures, with some elements in perspective.

[0028] Figure 8 This is a drawing of the column base and connected components of a steel frame column, with some elements in perspective.

[0029] Figure 9 This is a diagram of the wrench hole sealing plate.

[0030] Figure 10 for Figure 6 The cross-sectional view of the steel structure section along line C-C is the top view of the first end plate 1.

[0031] Figure 11 This is a diagram of the concrete foundation and the embedded anchor bolts.

[0032] Figure 12 A steel column with a rectangular cross-section, either rolled or welded.

[0033] Legend: 1. Steel frame column; 2. Steel frame beam; 3. First end plate; 4. Second end plate; 5. Steel connecting beam; 6. Anchor bolt; 7. Adjusting nut; 8. Nut; 9. Non-shrink fine aggregate concrete or grout layer; 10. Stud; 11. Plain concrete; 12. Flexible anti-corrosion material; 13. Concrete base; 14. Energy storage compartment; 15. Wrench hole; 16. Anchor bolt opening; 100. Single steel frame; 17. Wrench hole cover plate; 18. Rectangular section steel pipe column; 19. Gasket. Detailed Implementation

[0034] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0035] As described in the background section, concrete foundations cannot be flexibly modified to accommodate changes in the size of the battery compartments. Furthermore, if an energy storage power station is abandoned due to poor operation or the end of its lifespan, the concrete foundations of each compartment will remain in the soil for a long period, rendering the site unusable. Removing the concrete foundations is also problematic, as the foundation slab, frame columns, and frame beams or vertical walls are a cast-in-place monolith, making removal a very time-consuming and labor-intensive task. Moreover, the removed reinforced concrete is considered construction waste with low utilization value. Currently, the construction of concrete energy storage compartment foundations typically employs cast-in-place techniques, requiring multiple steps such as reinforcing steel binding, formwork erection and dismantling, pouring, and curing, resulting in a slow construction speed.

[0036] To address this issue, this embodiment proposes a prefabricated steel structure energy storage pod base. This base can significantly shorten the construction period and substantially reduce carbon emissions and carbon footprint. During site excavation and foundation treatment, steel structure components can be fabricated in a factory. After some preliminary work is completed, the steel structure components are transported to the site for installation, further reducing the construction period. Furthermore, the prefabricated steel structure can be flexibly modified after installation and is easy to dismantle at the end of its lifespan. The dismantled steel still has high reuse value and can be traded secondary.

[0037] like Figures 1 to 10As shown, in this embodiment, a steel structure prefabricated energy storage tank base relating to a novel power system is provided. It consists of three sets of individual steel frames 100, steel connecting beams 5, anchor bolts 6, adjusting nuts 7, nuts 8, washers 19, non-shrink fine aggregate concrete or grouting material 9, and an anti-corrosion structure. The tops of the three sets of individual steel frames 100 are connected as a whole by the steel connecting beams 5. The connections between both ends of the steel connecting beams 5 and the tops of the individual steel frames 100 are rigid connections, thus completing the assembly of the steel structure prefabricated energy storage tank base. The bottom of the circular cross-section steel frame column 1 of each single steel frame 100 is connected to the anchor bolt 6 by adjusting nuts 7 and nuts 8. The anchor bolt 6 is pre-embedded in the concrete base 13. The circular cross-section steel frame column 1 of the single steel frame 100 extends below the ground and is directly connected to the concrete base 13. There is no need to set up short concrete columns. The part of the single steel frame 100 in contact with the soil is provided with an anti-corrosion structure. A non-shrink fine stone concrete or grouting material layer 9 is filled between the bottom of the single steel frame 100 and the concrete base 13.

[0038] The steel-structure prefabricated energy storage tank base proposed in this embodiment has the advantage of extending the steel frame column 1 below ground level and directly connecting it to the concrete base 13, eliminating the need for short concrete columns. Currently, the frame columns or truss columns of prefabricated steel structures are all situated on short concrete foundation columns. Considering the large load, high center of gravity, and large wind load area of ​​the superstructure, significant uplift forces are generated under load combinations controlled by seismic or wind loads, resulting in long vertical anchorage lengths for the anchor bolts. This necessitates pre-embedded anchorage of the long anchor bolts in the concrete foundation and short columns. Simultaneously, the self-weight of the concrete foundation and short columns is required to resist the uplift forces generated by the superstructure. However, the energy storage tank has a relatively small height; the battery compartment and PCS compartment are mostly below 4m in height, and most are single-layered with a height-to-width ratio of less than 1.4. Extensive simulation calculations and analyses have shown that no uplift forces will occur under load combinations controlled by seismic or wind loads. Meanwhile, anchor bolt 6 is not used as a bearing component after the overall structure is completed. The bearing medium at anchor bolt 6 is mainly non-shrink fine stone concrete or grout. Therefore, there is no requirement for the anchor length of anchor bolt 6. Since there is no pull-out force, there is no need to increase the weight of the concrete foundation itself, nor is it necessary to configure short columns to counteract the pull-out force.

[0039] It should be noted that the number of individual steel frames 100 is not limited to three sets; two, four, or five sets can be selected depending on the size of the energy storage compartment. Specifically, in this embodiment, the three sets of individual steel frames 100 have identical structures. Each set of individual steel frames 100 consists of a circular cross-section steel frame column 1, a steel frame beam 2, a first end plate 3, and a second end plate 4. The connection between the steel frame beam 2 and the two circular cross-section steel frame columns 1 is rigid, and the steel frame beam 2 is located at the upper end of the two circular cross-section steel frame columns 1 connected to it. The second end plate 4 is welded to the upper end of the circular cross-section steel frame column 1, and the second end plate 4 is perpendicular to the axial direction of the circular cross-section steel frame column 1. The first end plate 3 is welded to the lower end of the circular cross-section steel frame column 1, and the first end plate 3 is perpendicular to the axial direction of the circular cross-section steel frame column 1.

[0040] Furthermore, in order to achieve the connection between the single steel frame 100 and the anchor bolt 6, there is an anchor bolt hole 16 in the middle of the first end plate 3, and the anchor bolt hole 16 is threadedly engaged with the anchor bolt 6; the nut 8 is located above the first end plate 3, the adjusting nut 7 is located below the first end plate 3, and a washer 19 is provided between the nut 8 and the first end plate 3, and a washer 19 is also provided between the adjusting nut 7 and the first end plate 3. The washer 19 serves to fasten and pre-tighten.

[0041] Furthermore, a wrench hole 15 is made on the circular cross-section steel frame column 1 near the first end plate 3. After the top elevation of the steel structure prefabricated energy storage tank base is adjusted using an adjusting nut, a wrench is used to tighten the nut through the wrench hole. Then, the wrench hole is sealed with a wrench hole sealing plate and welded firmly.

[0042] Furthermore, screw the adjusting nut 7 onto the anchor bolt 6 pre-embedded in the concrete base 13, and adjust the adjusting nut 7 downwards until the threads at the upper end of the anchor bolt 6 are exposed.

[0043] Preferably, all individual steel frames 100 are first manufactured in the processing plant in the manner described above, and then transported to the site for hoisting. The anchor bolt holes 16 on the first end plate 3 of the individual steel frame 100 are aligned with the anchor bolts 6 embedded in the concrete base 13, and the frame is slowly lowered until the lower surface of the first end plate 3 is in close contact with the adjusting nut 7.

[0044] Furthermore, the elevation of the steel structure prefabricated energy storage tank base is adjusted by adjusting nut 7 to ensure that the top elevation and flatness meet the relevant requirements. Then, a wrench is inserted into the wrench hole 15 to tighten the nut 8. After tightening, the wrench hole 15 is sealed and welded shut with wrench hole sealing plate 17.

[0045] Furthermore, since there is still a certain gap between the concrete base 13 and the first end plate 3, the gap between the concrete base 13 and the first end plate 3 is filled with non-shrink fine stone concrete or grouting material layer 9; the friction between the non-shrink fine stone concrete layer or grouting material layer and the concrete base 13 can be used to resist the horizontal shear force generated by the energy storage compartment when subjected to earthquake or wind load.

[0046] Regarding resistance to horizontal shear force, due to the low center of gravity of the energy storage pod and the small area subjected to wind load, calculations and analysis show that the horizontal shear force generated is small under both seismic force-controlled and wind load-controlled working conditions. Therefore, in this embodiment, the friction between the first end plate 3 of the steel frame column 1 and the non-shrink fine stone concrete layer or grouting layer 9, and between the non-shrink fine stone concrete layer or grouting layer and the concrete base 13, is used to resist the horizontal shear force generated under various working condition combinations.

[0047] Furthermore, since the steel frame column 1 is in long-term contact with the soil, it is easily corroded, which will reduce the service life of the energy storage tank base. Therefore, in order to extend the service life of the energy storage tank base, special anti-corrosion treatment is required for the part of the steel frame column 1 that is in contact with the soil. At present, the anti-corrosion of steel structures above ground is already very mature. However, the anti-corrosion of steel structures below ground is more important because they are in direct contact with the soil and the upper layer of water. At present, steel structure columns that extend deep into the ground are still uncommon. Although the steel column in the cup-shaped foundation can extend deep into the ground and can bear the uplift force and bending moment, it is a rigid connection between the steel column and the cup-shaped foundation. Moreover, there are reinforcing bars and stirrups in the cup-shaped foundation. The material of the cup-shaped foundation is reinforced concrete, which can naturally play an anti-corrosion role. However, this is obviously inconsistent with the starting point of this utility model. The connection between the steel frame column 1 and the concrete base 13 of the steel structure prefabricated base proposed in this utility model is based on the assumption that it does not bear bending moment, that is, it is a non-rigid connection (hinged connection). Therefore, there is no need to make a short reinforced concrete column cup-shaped foundation with a thick wall. Another type of offshore wind turbine tower steel pile is directly inserted into the seawater and reaches the seabed. However, the environment of offshore wind turbine tower steel piles is much harsher than that on land, and they mostly require a series of anti-corrosion treatments such as cathodic protection, which are costly and not suitable for the anti-corrosion of the underground part of the steel structure column on land. Therefore, this embodiment proposes a relatively low-cost method to solve the anti-corrosion of underground steel structures on land, namely the rigid anti-corrosion method of this embodiment. Studs 10 are welded to the outside of the part of the steel frame column 1 that is in contact with the soil. The studs are preferably made of stainless steel and coated with anti-corrosion paint. The tail of the stud is welded to the steel frame column 1. The length of the stud is the thickness of the outer concrete, which is used as a support for the formwork. The studs also serve to reinforce the outer concrete and strengthen the adhesion between the plain concrete and the steel column. Then the formwork is erected. After the formwork is erected, plain concrete 11 is poured between the outside of the steel frame column 1 and the formwork. After the plain concrete 11 reaches a certain strength, the formwork is removed in time. By pouring plain concrete 11 around the outer ring of the steel frame column 1, rigid anti-corrosion of the steel frame column 1 is achieved.

[0048] Furthermore, this embodiment also provides a flexible anti-corrosion method, which involves directly applying anti-corrosion coating or wrapping the outer side of the part of the steel frame column 1 that is in contact with the soil with a composite flexible anti-corrosion membrane 12.

[0049] In practice, one of the two anti-corrosion measures can be selected based on the design service life of the steel structure prefabricated energy storage tank base and the cost and construction period of both rigid and flexible anti-corrosion measures.

[0050] Furthermore, in this embodiment, the steel frame beam 2 and the steel connecting beam 5 are both connected to the top of the steel frame column 1, and both are rigid connections; the connection between the bottom of the steel frame column 1 and the top of the concrete base 13 is a hinge, that is: the bottom of the steel frame column 1 and the top of the concrete base 13 are connected only by the anchor bolt 6 located at the center of the bottom of the steel frame column 1, and no anchor bolt 6 is set on the outer ring of the steel frame column 1, thus forming a non-rigid connection that does not bear bending moment, i.e., a hinge; the anchor bolt 6 in this embodiment is equipped with an adjusting nut 7 and a nut 8, wherein the adjusting nut 8 is located below the first end plate 3 and is used to adjust the elevation of the top of the steel structure prefabricated energy storage tank base; the nut 8 is located above the first end plate 3 and is used to fix the position of the first end plate.

[0051] It should be further explained that this embodiment takes the steel frame column 1 of the prefabricated steel structure energy storage tank base as an example, with a circular cross-section steel pipe column. The cross-section of the steel frame column 1 of the prefabricated steel structure energy storage tank base in this utility model can also be a rectangular cross-section steel pipe column 18. See details... Figure 12 .

[0052] Furthermore, based on the aforementioned steel structure prefabricated energy storage tank base, this embodiment also discloses a construction method, as follows:

[0053] First, all the individual steel frames 100 are manufactured in the processing plant in the manner described above, and then transported to the site for hoisting. Align the anchor bolt holes 16 on the first end plate 3 of the individual steel frame 100 with the anchor bolts 6 embedded in the concrete base 13, and slowly lower it until the lower surface of the first end plate 3 is in close contact with the adjusting nut 7. Temporary diagonal bracing is then installed to correct the verticality of the individual steel frame 100.

[0054] The top of the single steel frame 100 is connected as a whole by steel connecting beam 5. The two ends of the steel connecting beam 5 are rigidly connected to the top of the single steel frame 100. The steel structure prefabricated energy storage tank base is assembled; and the temporary diagonal bracing is removed.

[0055] Adjust the elevation of the steel structure prefabricated energy storage tank base by adjusting nut 7 to ensure that the top elevation and flatness meet the relevant requirements. Then, use a wrench to tighten nut 8 by inserting it into wrench hole 15. After tightening, seal wrench hole 15 with wrench hole sealing plate 17 and weld it in place.

[0056] The gap between the concrete base 13 and the first end plate 3 is filled with non-shrink fine aggregate concrete or grouting material 9.

[0057] The part of steel frame column 1 that is in contact with the soil needs to be treated with special anti-corrosion measures.

[0058] It should be noted that the wrench hole sealing plate 17 mentioned above can be pre-drilled at the processing plant or cut on-site.

[0059] It should be noted that the steel frame beams and steel frame columns of the above-mentioned single steel frame can be pre-assembled in the factory or assembled on site.

[0060] As can be seen from the above specific embodiments, the steel structure prefabricated energy storage tank base of this utility model has no concrete beams or columns, thus eliminating a series of procedures such as rebar tying, formwork erection, pouring, and curing of beams and columns, saving time for project construction, and being energy-saving, environmentally friendly, and reducing carbon emissions. Using the steel structure prefabricated energy storage tank base of this utility model allows for the rapid dismantling of beams and columns, minimizing land loss. Furthermore, the dismantled steel components can be reused or traded, possessing high reuse value.

[0061] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A steel structure assembled energy storage cabin base, characterized in that, It includes several sets of single steel frames, with adjacent single steel frames rigidly connected by steel connecting beams; each single steel frame consists of steel frame columns, steel frame beams, a first end plate, and a second end plate; each end of the steel frame beam is rigidly connected to a steel frame column, the steel frame column is perpendicular to the steel frame beam, and the top of the steel frame column is fixed to the second end plate, and the bottom is fixed to the first end plate; the bottom of the steel frame column extends below the ground, and the first end plate is connected to anchor bolts pre-fixed to a concrete base; a layer of non-shrinkage fine aggregate concrete or grout is filled between the first end plate and the concrete base; and the part of the steel frame column in contact with the soil is treated with anti-corrosion measures.

2. The steel structural fabricated energy storage cavern base of claim 1, wherein, The corrosion protection treatment described is a rigid corrosion protection treatment.

3. The steel structural fabricated energy storage cavern base of claim 2, wherein, The rigid anti-corrosion treatment involves welding studs to the outside of the steel frame column and then pouring concrete on the outside of the steel frame column.

4. The steel structural fabricated energy storage cavern base of claim 2, wherein, The studs are made of stainless steel and coated with anti-corrosion paint.

5. The steel structural fabricated energy storage cavern base of claim 1, wherein, The corrosion protection treatment described is a flexible corrosion protection treatment.

6. The steel structural fabricated energy storage cavern base of claim 5, wherein, The flexible anti-corrosion treatment involves applying an anti-corrosion coating layer or wrapping the outer side of the part of the steel frame column that is in contact with the soil with a composite flexible anti-corrosion membrane.

7. The steel structural fabricated energy storage cavern base of claim 1, wherein, The steel frame column cross-section is either a circular cross-section steel pipe column or a rectangular cross-section steel pipe column.

8. The steel structural fabricated energy storage cavern base of claim 1, wherein, The anchor bolts are equipped with adjusting nuts and bolts. The adjusting nuts are located below the first end plate and are used to adjust the elevation of the top of the steel structure prefabricated energy storage tank base. The bolts are located above the first end plate and are used to fix the position of the first end plate.

9. The steel structural fabricated energy storage cavern base of claim 1, wherein, The steel frame column is provided with a nut wrench hole at one end near the foundation. After the top elevation of the prefabricated steel energy storage tank base is adjusted, the nut wrench hole is sealed with a wrench hole sealing plate and welded firmly.

10. The steel structural fabricated energy storage cavern base of claim 1, wherein, The upper end of the steel frame column is welded with a second end plate; the lower end of the steel frame column is welded with a first end plate.

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