Steel structure assembly type energy storage cabin base and construction method

Abstract

The invention provides a steel structure assembly type energy storage cabin base and a construction method. The steel structure assembly type energy storage cabin base 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. 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] The present invention relates to the field of energy storage power stations and prefabricated steel structure technology in new power systems, and particularly to a steel structure prefabricated base for an energy storage cabin and a construction method therefor. Background Art

[0002] At present, energy storage power station projects in new power systems mainly include facilities such as battery cabins, PCS cabins, and step-up substations. The battery cabins and PCS cabins are mainly in the form of energy storage cabins, and they are not vibrating equipment. Most of these energy storage cabins are placed outdoors on specially designed concrete bases. Common concrete bases include concrete box-shaped bases and concrete frame bases. Concrete beams and columns are provided on the concrete frame bases, and the energy storage cabins are installed on the tops of the beams and columns of the concrete frame bases or on the vertical walls of the concrete box-shaped bases. However, with the replacement of batteries, the specifications and sizes of the battery cabins will also change, and the concrete bases cannot be flexibly modified according to the size changes of the battery cabins. Further, if the energy storage power station is abandoned due to poor operation or the end of its life cycle, etc., the concrete bases of each cabin on the ground will remain in the soil for a long time, which will cause the site to be unable to be reused; if it is considered to remove the concrete base from the soil, since its foundation slab, frame columns, and frame beams or vertical walls are a cast-in-place whole, removing the concrete base will be a very time-consuming and laborious task, and the removed reinforced concrete belongs to construction waste with low utilization value. And currently, the construction of the energy storage cabin base in concrete form usually adopts the cast-in-place process, which requires multiple links such as steel bar binding, formwork erection and removal, pouring, and curing, and its construction speed is slow.

[0003] In addition, although some prefabricated steel structure bases are disclosed in other fields, currently the frame columns of the prefabricated steel structure bases are all located on the short concrete foundation columns. Considering the large load of the upper structure, a large uplift force will be generated under the load combination conditions controlled by seismic force or wind load, resulting in a longer vertical anchorage length of the anchor bolts of the prefabricated steel structure base. It is necessary to pre-embed and anchor the longer anchor bolts with the concrete foundation and short columns. At the same time, the self-weight of the concrete foundation and short columns is also required to resist the uplift force generated by the upper structure; however, in the energy storage field, the height of the energy storage cabin is small, and the heights of the battery cabin and PCS cabin are mostly below 4m, mostly placed in a single layer, and the height-width ratio is mostly less than 1.4. After a large number of modeling analysis and calculations, no uplift force will be generated under the load combination conditions controlled by seismic force or wind load. Therefore, the prefabricated steel structure bases disclosed in other fields are not applicable to energy storage cabins. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned existing technologies and provide a steel structure prefabricated base for an energy storage cabin and a construction method therefor.

[0005] The object of the present invention can be achieved by the following technical solutions:

[0006] In a first aspect, the present invention provides a steel structure prefabricated energy storage cabin base, which includes a number of single-plane steel frames, and adjacent single-plane steel frames are rigidly connected by steel coupling beams; the single-plane steel frame is composed of a steel frame column, a steel frame beam, a first end plate, and a second end plate; both ends of the steel frame beam are rigidly connected to a steel frame column respectively, the steel frame column is perpendicular to the steel frame beam, and the second end plate is fixed at the top of the steel frame column, and the first end plate is fixed at the bottom; the bottom of the steel frame column extends below the ground, and the first end plate is connected to the anchor bolts pre-fixed on the concrete base, and a non-shrinkage fine aggregate concrete or grout layer 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 subjected to anti-corrosion treatment.

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

[0008] As a further technical solution, the rigid anti-corrosion treatment includes welding stud bolts on the outer side of the steel frame column, and then building concrete on the outer side of the steel frame column.

[0009] As a further technical solution, the anti-corrosion treatment is a flexible anti-corrosion treatment.

[0010] As a further technical solution, the flexible anti-corrosion treatment is to apply an anti-corrosion coating layer or wrap a composite flexible anti-corrosion coil on the outer side of the part of the steel frame column in contact with the soil.

[0011] As a further technical solution, the cross-sectional form of the steel frame column can be a circular-section steel pipe column or a rectangular-section steel pipe column.

[0012] 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, and the anchor bolts are provided with adjusting nuts and nuts. 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 cabin base; the nut is located above the first end plate and is used to fix the position of the first end plate.

[0013] As a further technical solution, a nut wrench hole is provided at one end of the steel frame column close to the foundation. After the elevation of the top of the steel structure prefabricated energy storage cabin base is adjusted by using the adjusting nut, a wrench is used to tighten the nut through the wrench hole, and then the wrench hole is sealed with a wrench hole sealing plate and welded firmly.

[0014] In a second aspect, based on the above-mentioned steel structure prefabricated energy storage cabin base, the present invention further provides a construction method, which is as follows:

[0015] Step 1 Prefabricate a single steel frame in advance, then transport it to the site for hoisting. Align the anchor bolt holes on the first end plate of the single steel frame with the anchor bolts embedded in the concrete base, and slowly lower it until the lower surface of the first end plate is closely attached to the adjusting nut; and set up temporary diagonal braces.

[0016] Step 2 Connect the tops of the single steel frames into a whole through steel coupling beams. The connections at both ends of the steel coupling beams with the tops of the single steel frames are both rigid connections, and the assembly of the steel structure prefabricated energy storage cabin base is completed; and remove the temporary diagonal braces.

[0017] Step 3 Adjust the elevation of the steel structure prefabricated energy storage cabin base through the adjusting nut to make its top elevation and flatness meet the relevant requirements. Then, insert a wrench into the wrench hole to tighten the nut. After tightening, block and weld the wrench hole with a wrench hole sealing plate.

[0018] Step 4 Fill the gap between the concrete base and the first end plate with non-shrinkage fine aggregate concrete or grout.

[0019] Step 5 Special anti-corrosion treatment shall be carried out on the part of the steel frame column in contact with the soil.

[0020] As a further technical solution, the order of Step 2 and Step 3 can be swapped; the wrench hole sealing plate can be reserved in advance at the processing factory or opened on-site at the construction site; the steel frame beams and steel frame columns of the single steel frame can be pre-assembled at the factory or assembled on-site.

[0021] Compared with the prior art, the advantages of the present invention are as follows:

[0022] 1. Compared with the existing concrete base, the steel structure prefabricated energy storage cabin base in the present invention can realize the processing and manufacturing of components in the factory during the construction period. After being manufactured and transported to the site, only installation is required, saving a series of processes such as tying steel bars, formwork erection and removal, pouring, and curing, saving a large amount of time and manpower; the construction process of the steel structure prefabricated energy storage cabin base in the present invention is energy-saving and environmentally friendly, and can reduce carbon emissions; in the problems brought about by the change of the cabin size due to the battery upgrade and replacement in the later stage, it is necessary to adjust the layout of the base beams accordingly. The present invention can add new base beams inside or outside the original base beams. The newly added steel structure base beams can be directly welded or bolted to the steel structure prefabricated energy storage cabin base in the present invention, making the transformation flexible and convenient. If the energy storage power station is abandoned due to reasons such as the end of the life cycle of the energy storage power station, using the steel structure prefabricated energy storage cabin base in the present invention, the beams and columns can be quickly removed, minimizing the loss of land. And the removed steel components can be reused or traded, with high reuse value. Further, due to the configuration of the adjusting nut in the present invention, the precise adjustment of the top elevation of the base can be realized.

[0023] 2. Compared with prefabricated steel structures of buildings and structures in other fields, the advantages of the steel structure prefabricated energy storage cabin base of the present invention are as follows: The steel frame columns of the steel structure prefabricated energy storage cabin base penetrate deep below the ground and are directly connected to the concrete base, eliminating the need for concrete short columns. The height of the energy storage cabin is relatively small, with the heights of most battery cabins and PCS cabins being below 4m, and most are placed in a single layer, with an aspect ratio mostly less than 1.4. Through a large number of modeling calculations and analyses, no uplift force will be generated under the load combination conditions controlled by seismic forces or wind loads. At the same time, the anchor bolts are not used as load-bearing components after the overall structure is completed. The pressure-bearing medium at the anchor bolt is mainly non-shrinkage fine aggregate concrete or grout. Therefore, there is no requirement for the length of the anchor bolts. Also, 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 counteract the uplift force.

[0024] 3. In terms of resisting horizontal shear force, the present invention mainly relies on the frictional force 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. Due to the relatively low center of gravity of the energy storage cabin and the relatively small wind load bearing area, the horizontal shear force generated under both the load combination conditions controlled by seismic forces and the load combination conditions controlled by wind loads is relatively small. Therefore, the horizontal shear force generated under the load combination conditions can be resisted solely by the frictional force.

[0025] 4. In terms of anti-corrosion, the present invention proposes a relatively low-cost method to solve the anti-corrosion of steel structures underground on land, that is, the rigid anti-corrosion in the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the overall effect diagram of the energy storage unit incorporated into the steel structure prefabricated energy storage cabin base of the present invention.

[0027] Figure 2 It is the three-dimensional view of the steel structure prefabricated energy storage cabin base body of the present invention.

[0028] Figure 3 It is Figure 2 the top plan view in

[0029] Figure 4 It is Figure 3 the sectional view along A - A in

[0030] Figure 5 It is Figure 3 the sectional view along B - B in

[0031] Figure 6 It is the drawing of the steel frame column and the connected components with rigid anti-corrosion measures below the ground, with some elements in perspective.

[0032] Figure 7Steel frame columns and connected components below the ground with flexible anti-corrosion measures, with some elements in perspective.

[0033] Figure 8 Steel frame column base part and connected components, with some elements in perspective.

[0034] Figure 9 Diagram of the wrench hole cover plate.

[0035] Figure 10 For Figure 6 The sectional view of the steel structure along C-C in is the top view of the first end plate 1.

[0036] Figure 11 Concrete foundation and embedded anchor bolts.

[0037] Figure 12 Rolled or welded rectangular-section steel columns.

[0038] Legend: 1. Steel frame column; 2. Steel frame beam; 3. First end plate; 4. Second end plate; 5. Steel coupling beam; 6. Anchor bolt; 7. Adjusting nut; 8. Nut; 9. Non-shrinking fine aggregate concrete or grouting layer; 10. Stud; 11. Plain concrete; 12. Flexible anti-corrosion material; 13. Concrete base; 14. Energy storage cabin; 15. Wrench hole; 16. Anchor bolt hole; 100. Single steel frame; 17. Wrench hole cover plate; 18. Rectangular-section steel pipe column; 19. Gasket. Detailed implementation mode

[0039] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and gives the detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0040] As described in the background art part, the concrete base of the concrete base cannot be flexibly modified according to the size change of the battery cabin. Further, if the energy storage power station is abandoned due to poor operation or the end of its life cycle, etc., the concrete bases of the cabins in the ground will remain in the soil for a long time, which will cause the site to be unable to be reused; if considering removing the concrete base from the soil, because its foundation slab, frame columns and frame beams or vertical walls are a cast-in-place whole, removing the concrete base will be a very time-consuming and laborious task, and the removed reinforced concrete belongs to construction waste with low utilization value. And currently, the construction of the energy storage cabin base in the form of concrete usually adopts the cast-in-place process, which requires multiple links such as steel bar binding, formwork support and removal, pouring, and curing, and its construction speed is slow.

[0041] To solve this problem, this embodiment proposes a steel structure prefabricated energy storage cabin base, which can greatly reduce the construction period and significantly reduce carbon emissions and carbon footprint. During the site earthwork excavation and foundation treatment, the steel structure components can be processed and manufactured in the factory. After some preliminary work of the project is completed, the steel structure components are transported to the site for installation, which will greatly reduce the construction period. In addition, the prefabricated steel structure can be flexibly modified after installation, and it is also convenient to disassemble at the end of its life cycle. Moreover, the disassembled steel still has a high reuse value and can be traded secondarily.

[0042] As Figures 1 to 10 shown, in this embodiment, a steel structure prefabricated energy storage cabin base related to the field of new power systems is provided. It consists of three sets of single-span steel frames 100, steel coupling beams 5, anchor bolts 6, adjusting nuts 7, nuts 8, gaskets 19, non-shrinking fine aggregate concrete or grouting material 9, and an anti-corrosion structure. The tops of the three sets of single-span steel frames 100 are connected into a whole through the steel coupling beams 5. The connections at both ends of the steel coupling beams 5 and the tops of the single-span steel frames 100 are both rigid connections, and the steel structure prefabricated energy storage cabin base is assembled. At the bottom of the circular-section steel frame column 1 of each single-span steel frame 100, the anchor bolt 6 is connected through the adjusting nut 7 and the nut 8, and the anchor bolt 6 is embedded in the concrete base 13. The circular-section steel frame column 1 of the single-span steel frame 100 extends below the ground and is directly connected to the concrete base 13 without setting a concrete short column. An anti-corrosion structure is provided at the part of the single-span steel frame 100 in contact with the soil. A layer of non-shrinking fine aggregate concrete or grouting material 9 is filled between the bottom of the single-span steel frame 100 and the concrete base 13.

[0043] Compared with other prefabricated steel structure buildings and structures, the steel structure prefabricated energy storage cabin base proposed in this embodiment has the advantage that the steel frame columns 1 of the steel structure prefabricated energy storage cabin base penetrate below the ground and are directly connected to the concrete base 13, without the need to set concrete short columns. At present, the bent columns or frame columns of prefabricated steel structure buildings and structures are all located on the concrete foundation short columns. Considering the large load of the upper structure, high center of gravity, and large wind load bearing area, a large uplift force will be generated under the load combination conditions controlled by seismic force or wind load, resulting in a relatively long anchorage length of the vertical section of the anchor bolts. It is necessary to pre-embed and anchor the relatively long anchor bolts with concrete foundation and short columns. At the same time, the self-weight of the concrete foundation and short columns is also required to resist the uplift force generated by the upper structure. However, the height of the energy storage cabin is small, and the heights of the battery cabin and PCS cabin are mostly below 4m, mostly placed in a single layer, and the height-width ratio is mostly less than 1.4. After a large number of simulation calculations and analyses, no uplift force will be generated under the load combination conditions controlled by seismic force or wind load. At the same time, the anchor bolts 6 are not used as the bearing components after the overall structure is completed. The bearing medium at the anchor bolts 6 is mainly non-shrinking fine aggregate concrete or grout. Therefore, there is no requirement for the anchorage length of the anchor bolts 6. And because no uplift force is generated, there is no need to increase the self-weight of the concrete foundation, nor to configure short columns to offset the uplift force.

[0044] It should be noted that the number of single steel frames 100 set is not limited to three sets, and two sets, four sets, five sets, etc. can be selected according to the size of the energy storage cabin; specifically, the structures of the three single steel frames 100 in this embodiment are exactly the same. Each single steel frame 100 is composed of a circular-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-section steel frame columns 1 at both ends in the single steel frame 100 is a rigid connection, and the steel frame beam 2 is arranged at the upper ends of the two circular-section steel frame columns 1 connected thereto. The second end plate 4 is welded to the upper end of the circular-section steel frame column 1, and the second end plate 4 is perpendicular to the axis direction of the circular-section steel frame column 1; the first end plate 3 is welded to the lower end of the circular-section steel frame column 1, and the first end plate 3 is perpendicular to the axis direction of the circular-section steel frame column 1.

[0045] Furthermore, in order to realize the connection between the single steel frame 100 and the anchor bolts 6, there are anchor bolt holes 16 in the middle of the first end plate 3, and the anchor bolt holes 16 are in threaded fit with the anchor bolts 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 gasket 19 is provided between the nut 8 and the first end plate 3, and a gasket 19 is also provided between the adjusting nut 7 and the first end plate 3. The gasket 19 plays a role in fastening and pre-tightening.

[0046] Furthermore, a wrench hole 15 is opened in the circular-section steel frame column 1 near the first end plate 3. After adjusting the top elevation of the steel structure prefabricated energy storage cabin base with the adjusting nut, use a wrench to pass through the wrench hole to tighten the nut, and then use a wrench hole sealing plate to seal the wrench hole and weld it firmly.

[0047] Furthermore, screw the adjusting nut 7 onto the anchor bolt 6 embedded in the concrete base 13, and adjust the adjusting nut 7 downward until the thread at the upper end of the anchor bolt 6 is exposed.

[0048] Preferably, first fabricate all single-story steel frames 100 in the factory in the above manner, then transport them to the site for hoisting. Align the anchor bolt holes 16 on the first end plate 3 in the single-story 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 closely attached to the adjusting nut 7.

[0049] Furthermore, adjust the elevation of the steel structure prefabricated energy storage cabin base through the adjusting nut 7 to make its top elevation and flatness meet the relevant requirements. Then, use a wrench to reach into the wrench hole 15 to tighten the nut 8. After tightening, use a wrench hole sealing plate 17 to block and weld the wrench hole 15.

[0050] Furthermore, since there is still a certain gap between the concrete base 13 and the first end plate 3, use non-shrinkage fine aggregate concrete or grout layer 9 to fill the gap between the concrete base 13 and the first end plate 3. The friction force between the non-shrinkage fine aggregate concrete layer or grout layer and the concrete base 13 can be used to resist the horizontal shear force generated when the energy storage cabin is subjected to seismic action and wind load.

[0051] In terms of resisting the horizontal shear force, due to the low center of gravity of the energy storage cabin and the small wind load bearing area, through calculation and analysis, the horizontal shear force generated is small under both the combined working conditions controlled by seismic force and the combined working conditions controlled by wind load. Therefore, in this embodiment, the friction force between the first end plate 3 of the steel frame column 1 and the non-shrinkage fine aggregate concrete layer or grout layer 9, and between the non-shrinkage fine aggregate concrete layer or grout layer and the concrete base 13 is used to resist the horizontal shear force generated under various combined working conditions.

[0052] Furthermore, since the steel frame column 1 is in contact with the soil for a long time, it is prone to corrosion, which will reduce the service life of the energy storage cabin base. Therefore, in order to extend the service life of the energy storage cabin base, special anti-corrosion treatment needs to be carried out on the part of the steel frame column 1 in contact with the soil. At present, the anti-corrosion of the steel structure above the ground is already very mature. For the steel structure below the ground, because it is directly in contact with the soil and the perched water, its anti-corrosion is more important than that of the steel structure above the ground. At present, steel structure columns extending deep below the ground are still not common. Although the steel column in the cup foundation can extend below the ground, it can bear the uplift force and also withstand the bending moment. It belongs to the rigid connection between the steel column and the cup foundation, and there are stress reinforcing bars and stirrups in the cup, and the material of the cup is reinforced concrete, which can naturally play an anti-corrosion role. However, this is obviously inconsistent with the starting point of this invention. The connection between the steel frame column 1 and the concrete base 13 of the steel structure prefabricated base proposed in this invention is assumed not to bear the bending moment, that is, non-rigid connection (hinged), so there is no need to make a short reinforced concrete column cup with a thick wall. In addition, the steel pile of the offshore wind tower is directly inserted into the sea water and enters the seabed. However, the environment where the steel pile of the offshore wind tower is located is much harsher than that on land. Most of them need to do a series of anti-corrosion treatments such as cathodic protection, and the anti-corrosion cost is relatively high, which is not suitable for the anti-corrosion of the underground part of the land steel structure column. Therefore, this embodiment proposes a relatively low-cost method to solve the anti-corrosion of the land underground steel structure, that is, the rigid anti-corrosion method of this embodiment; stud 10 is welded on the outside of the part of the steel frame column 1 in contact with the soil. The stud is 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 formwork. The stud can also play a role in strengthening the outer concrete, and at the same time strengthen the adhesion between the plain concrete and the steel column. Then, the formwork is supported. After the formwork is supported, 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 a timely manner. By pouring plain concrete 11 around the steel frame column 1, the rigid anti-corrosion of the steel frame column 1 is realized.

[0053] Furthermore, this embodiment also provides a flexible anti-corrosion method, which is to directly apply anti-corrosion paint or wrap a composite flexible anti-corrosion coil 12 on the outside of the part of the steel frame column 1 in contact with the soil.

[0054] Specifically, in the implementation process, according to the designed service life of the steel structure prefabricated energy storage cabin base, as well as the respective costs and construction periods of the two anti-corrosion measures of rigid anti-corrosion and flexible anti-corrosion, one of the two anti-corrosion measures can be selected for use.

[0055] Furthermore, in this embodiment, the steel frame beams 2 and the steel coupling beams 5 are both connected to the top of the steel frame column 1 and are both rigid connections; the connection between the bottom of the steel frame column 1 and the top of the concrete base 13 is a hinge connection, that is: the bottom of the steel frame column 1 and the top of the concrete base 13 are only connected by anchor bolts 6 located at the center position of the bottom of the steel frame column 1, and no anchor bolts 6 are provided on the outer ring of the steel frame column 1, thus forming a non-rigid connection that does not bear bending moment, that is, a hinge connection; the anchor bolts 6 in this embodiment are configured with adjusting nuts 7 and nuts 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 cabin base; the nut 8 is located above the first end plate 3 and is used to fix the position of the first end plate.

[0056] It should be further noted that this embodiment takes the steel frame column 1 of the steel structure prefabricated energy storage cabin base with a circular cross-section steel pipe column as an example. The cross-section type of the steel frame column 1 of the steel structure prefabricated energy storage cabin base in the present invention can also be a rectangular cross-section steel pipe column 18, specifically refer to Figure 12 .

[0057] Furthermore, based on the above steel structure prefabricated energy storage cabin base, this embodiment also discloses a construction method, which is as follows:

[0058] First, all single-story steel frames 100 are fabricated in the factory in the above manner, and then transported to the site for hoisting. Align the anchor bolt holes 16 on the first end plate 3 in the single-story 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 closely attached to the adjusting nut 7; and set temporary diagonal braces;

[0059] The tops of the single-story steel frames 100 are connected into a whole through the steel coupling beams 5. The connections at both ends of the steel coupling beams 5 and the tops of the single-story steel frames 100 are both rigid connections, and the assembly of the steel structure prefabricated energy storage cabin base is completed; and the temporary diagonal braces are removed, and the verticality of the single-story steel frames 100 is corrected;

[0060] Adjust the elevation of the steel structure prefabricated energy storage cabin base through the adjusting nut 7 to make its top elevation and flatness meet the relevant requirements. Then, insert a wrench into the wrench hole 15 to tighten the nut 8. After tightening, block and weld the wrench hole 15 with the wrench hole sealing plate 17.

[0061] Fill the gap between the concrete base 13 and the first end plate 3 with non-shrinkage fine aggregate concrete or grouting material 9;

[0062] The part of the steel frame column 1 in contact with the soil needs to be specially anti-corrosion treated.

[0063] It should be noted that the above-mentioned wrench hole sealing plate 17 can be reserved in advance at the processing factory or opened on-site at the construction site.

[0064] It should be noted that the steel frame beams and steel frame columns of the above single-story steel frame can be pre-assembled at the factory or assembled on-site.

[0065] It can be seen from the above specific implementation manners that there are no concrete beams and columns in the steel structure assembled energy storage cabin base of the present invention. Therefore, a series of processes such as steel bar binding, formwork support, pouring, and curing of beams and columns can be omitted, saving time for the project construction, and being energy-saving, environment-friendly, and reducing carbon emissions. Using the steel structure assembled energy storage cabin base of the present invention, the beams and columns can be quickly demolished, minimizing the loss of land. Moreover, the demolished steel components can be reused or traded, having a high reuse value.

[0066] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the above-disclosed technical content, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A steel structure assembled energy storage cabin base, characterized in that: It comprises a plurality of sets of single-frame steel frames, and adjacent single-frame steel frames are rigidly connected by steel connecting beams; the single-frame steel frames are composed 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 second end plate is fixed to the top of the steel frame column, and 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 the anchor bolts fixed on the concrete base in advance, and a shrinkage-free fine stone concrete or grouting layer is filled between the first end plate and the concrete base; and the contact part of the steel frame column with the soil is treated with anti-corrosion.

2. The steel structure assembled energy storage cabin base according to claim 1, characterized in that: The anti-corrosion treatment is a rigid anti-corrosion treatment.

3. The steel structure assembled energy storage cabin base according to claim 2, characterized in that: The rigid anti-corrosion treatment includes welding studs on the outside of the steel frame column and then pouring concrete on the outside of the steel frame column.

4. The steel structure assembled energy storage cabin base according to claim 1, characterized in that: The anti-corrosion treatment is a flexible anti-corrosion treatment.

5. The steel structure assembled energy storage cabin base according to claim 4, characterized in that: The flexible anti-corrosion treatment is to apply an anti-corrosion coating layer on the outer side of the part of the steel frame column that contacts the soil or to wrap it with a composite flexible anti-corrosion coiled material.

6. The steel structure assembled energy storage cabin base according to claim 1, characterized in that: The cross-section of the steel frame column can be a circular cross-section steel pipe column or a rectangular cross-section steel pipe column.

7. The steel structure assembled energy storage cabin base according to claim 1, characterized in that: The anchor bolts are equipped with adjusting nuts and nuts. The adjusting nuts are located below the first end plate and are used to adjust the elevation of the top of the steel structure assembled energy storage cabin base. The nuts are located above the first end plate and are used to fix the position of the first end plate.

8. The steel structure assembled energy storage cabin base according to claim 1, characterized in that: A nut wrench hole is provided at one end of the steel frame column close to the foundation. After the elevation of the top of the steel structure assembled energy storage cabin base is adjusted, the nut wrench hole is sealed with a wrench hole sealing plate and welded firmly.

9. The construction method of the steel structure assembled energy storage cabin base according to any one of claims 1 to 8, characterized in that: Step 1: Prefabricate a single steel frame in advance, then transport it to the site for hoisting. Align the anchor bolt holes on the first end plate of the single steel frame with the anchor bolts pre-buried in the concrete base, slowly lower it until the lower surface of the first end plate is close to the adjusting nut, and set a temporary diagonal brace; Step 2: The top of the single steel frame is connected as a whole through a steel connecting beam. The connections between the two ends of the steel connecting beam and the top of the single steel frame are rigidly connected. The steel structure assembled energy storage cabin base is assembled and the temporary diagonal brace is removed. Step 3: Adjust the elevation of the steel structure assembled energy storage cabin base by adjusting the nut so that the top elevation and flatness meet the relevant requirements, then use a wrench to insert the nut into the wrench hole to tighten the nut, and after tightening, use the wrench hole sealing plate to seal the wrench hole and weld it; Step 4: Fill the gap between the concrete base and the first end plate with non-shrinkage fine stone concrete or grouting material; Step 5 The part of the steel frame column that contacts the soil needs special anti-corrosion treatment.

10. The construction method of the steel structure assembled energy storage cabin base according to claim 9, characterized in that: The order of step 2 and step 3 can be swapped; the spanner hole sealing plate can be reserved in advance in the processing plant, or it can be opened on the construction site; the steel frame beams and steel frame columns of the single steel frame can be assembled in advance in the factory, or they can be assembled on site.

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