Assembly type electrochemical energy storage prefabricated cabin foundation

Abstract

The invention discloses an assembly type electrochemical energy storage prefabricated cabin foundation, and belongs to the technical field of energy storage facility construction. Comprising a reinforced concrete precast pile and an assembled steel frame erected at the top of the reinforced concrete precast pile; the fabricated steel frame comprises a foundation steel beam and a connecting steel sleeve, the foundation steel beam is connected with the connecting steel sleeve, the pile top of the reinforced concrete precast pile is sleeved with the connecting steel sleeve in an adjustable mode in the axial direction, and a pouring space is formed between the connecting steel sleeve and the reinforced concrete precast pile. The fabricated electrochemical energy storage prefabricated cabin foundation structure is mainly composed of prefabricated parts, the construction procedure is simplified, and the engineering construction time is shortened. The steel sleeve and post-grouting connection mode is adopted, pile foundation construction errors within a certain range can be allowed, even if the position of the pile foundation deviates or the elevation of the pile top does not reach the designed elevation, adjustment can be conducted by adjusting the elevation position of the connection steel sleeve, follow-up installation is not affected, and the flexibility and fault tolerance of construction are greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of energy storage facility construction technology, specifically relating to a prefabricated modular electrochemical energy storage cabin foundation. Background Technology

[0002] With the rapid development of intermittent energy sources such as wind power and photovoltaics, the power system faces challenges such as frequency regulation and peak-valley balancing. Electrochemical energy storage, with its high efficiency, flexibility, and scalability, has become a key technology for solving these problems. With technological advancements and policy support, the application scale and marketization of electrochemical energy storage in my country have continued to increase, providing important support for achieving energy structure optimization and carbon neutrality goals. Electrochemical energy storage power stations are widely used due to their modular design, the integration and packaging of major equipment in prefabricated modules, and relatively short construction cycles.

[0003] Currently, the foundations of prefabricated energy storage compartments in electrochemical energy storage power stations are mostly made of cast-in-place reinforced concrete. This method has several drawbacks, including numerous construction procedures (excavation, formwork, pouring, and curing), long construction periods, high requirements for foundation treatment and pile foundation construction accuracy, and poor tolerance for errors. Once there are construction errors in the pile top elevation or position, rework is often required, affecting the overall project progress and making it difficult to meet the "short, quick, and efficient" construction requirements of energy storage power stations. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing cast-in-place foundation construction, which suffers from low efficiency and low precision, by providing a prefabricated electrochemical energy storage chamber foundation to achieve rapid and reliable construction.

[0005] The technical solution adopted in this invention is as follows: a prefabricated electrochemical energy storage chamber foundation, comprising reinforced concrete precast piles and a prefabricated steel frame erected on top of the reinforced concrete precast piles; the prefabricated steel frame includes foundation steel beams and connecting steel sleeves, the foundation steel beams being arranged in a crisscross pattern, and connecting the foundation steel beams to the connecting steel sleeves at the crisscrossing points, with the axis of the connecting steel sleeves perpendicular to the extension direction of the foundation steel beams; the connecting steel sleeve is a cylindrical structure with a closed top, which is axially adjustable and fitted around the top of the reinforced concrete precast pile, forming a pouring space between the connecting steel sleeve and the reinforced concrete precast pile, and a grouting hole is provided at the closed top of the connecting steel sleeve; the elevation position of the connecting steel sleeve is locked by the grout filling the pouring space.

[0006] Furthermore, an annular gap is formed between the inner wall of the connecting steel sleeve and the outer wall of the precast reinforced concrete pile, and the pouring space includes the annular gap.

[0007] Furthermore, a movable template is provided at the bottom of the annular gap. The movable template is fitted around the outer periphery of the precast reinforced concrete pile and fixed to the bottom of the connecting steel sleeve.

[0008] Furthermore, the precast reinforced concrete pile is a hollow tubular structure with an inner support plate inside. The inner cavity of the pile is formed by the inner support plate and the inner wall of the portion of the precast reinforced concrete pile located above the inner support plate. The pouring space includes the inner cavity of the pile.

[0009] Furthermore, the foundation steel beam and the connecting steel sleeve are prefabricated as a whole in the factory to form an integral prefabricated steel frame.

[0010] Furthermore, the foundation steel beams and the connecting steel sleeves are prefabricated in sections and connected on-site through segmented connection nodes to form the assembled steel frame.

[0011] Furthermore, the segmented connection node includes connecting plates disposed on the ends of the foundation steel beams and the ends of the connecting steel sleeves on both sides of the splice. The connecting plates include an upper connecting plate, a lower connecting plate, and a web connecting plate. The upper connecting plate is welded between the upper flange plates of the foundation steel beams and the connecting steel sleeves, and the lower connecting plate is welded between the lower flange plates of the foundation steel beams and the connecting steel sleeves. The web connecting plate is fixed to the web plates of the foundation steel beams and the connecting steel sleeves by high-strength bolts.

[0012] Furthermore, the top of the foundation steel beam is provided with mounting lugs.

[0013] The beneficial effects of the present invention are as follows: The prefabricated electrochemical energy storage cabin foundation structure disclosed in the present invention is mainly composed of prefabricated components. Compared with the traditional cast-in-place reinforced concrete foundation, it eliminates the processes of excavation, formwork, pouring and curing, significantly simplifies the process flow on the construction site, and thus further shortens the construction time.

[0014] The prefabricated steel frame and prefabricated piles of the prefabricated electrochemical energy storage cabin foundation structure disclosed in this invention are connected by steel sleeves and post-grouting, resulting in a stable and reliable connection. Furthermore, this connection method allows for a certain range of pile foundation construction errors. Even if the pile foundation position deviates or the pile top elevation does not reach the design elevation, adjustments can be made by changing the elevation of the connecting steel sleeves without affecting subsequent installation, greatly improving construction flexibility and fault tolerance.

[0015] Post-grouting creates a rigid connection between the precast reinforced concrete piles and the assembled steel frame, enabling the pile foundation to bear the load as a whole and significantly improving its overall lateral resistance.

[0016] Prefabricated steel frames can be prefabricated as a whole or in sections, flexibly adapting to various transportation and on-site construction conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the foundation elevation of the prefabricated electrochemical energy storage module disclosed in this invention.

[0018] Figure 2 This is a schematic plan view of the prefabricated modular electrochemical energy storage module foundation disclosed in this invention;

[0019] Figure 3 for Figure 1 A magnified view of part A;

[0020] Figure 4 for Figure 2 A magnified view of section B;

[0021] Figure 5 This is a schematic diagram of a segmented prefabricated steel frame;

[0022] Figure 6 This is a schematic diagram of a segmented connection node.

[0023] In the diagram, 1 is a precast reinforced concrete pile, 2 is a foundation steel beam, 3 is a connecting steel sleeve, 3-1 is a grouting hole, 3-2 is a movable formwork, 3-3 is an inner support plate for the pile, 4 is a lifting lug, 5 is a segmented connection node, 5-1 is an upper connecting plate, 5-2 is a lower connecting plate, 5-3 is a web plate connecting plate, and 5-4 is a high-strength bolt. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] In this specification, unless otherwise stated, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the appendix. Figure 2 The orientation or positional relationship shown is for the purpose of describing the invention only, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0026] Prefabricated electrochemical energy storage module foundation, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the foundation includes precast reinforced concrete piles 1 as the lower supporting structure and an assembled steel frame erected on top of the precast reinforced concrete piles 1. Prestressed high-strength concrete pipe piles with an outer diameter of 300mm~600mm can be used as the precast reinforced concrete piles 1, with their tops protruding 300~500mm above the ground. The precast reinforced concrete piles 1 are driven into the foundation at the design elevation using static pressure or hammer driving methods, providing vertical bearing capacity for the entire foundation.

[0027] Prefabricated steel frames are used to directly support prefabricated electrochemical energy storage modules. There are two types: one is an integral prefabrication type, where the foundation steel beams 2 and connecting steel sleeves 3 are welded together in the factory to form a rigid frame unit. Integral prefabrication ensures precision and strength. This integral steel frame is suitable for applications where transportation and hoisting conditions permit. The other type is a segmented prefabrication type: such as... Figure 5 As shown, the long foundation steel beam 2 is manufactured in sections at the factory, with each section not exceeding the transportation length limit. The connecting steel sleeve 3 is welded to the short sections of the foundation steel beam 2 at the factory to form "T" or "L" shaped units. After being transported to the site, each segment unit is assembled through segmented connecting nodes 5. For example... Figure 6 As shown, the segmented connection node 5 specifically includes a connecting plate and high-strength bolts 5-4. An upper connecting plate 5-1 is welded to the upper flange of the beam, and a lower connecting plate 5-2 is welded to the lower flange. A web connecting plate 5-3 is provided at the web and connected to the web by high-strength bolts 5-4, ensuring the node stiffness and beam strength. Segmented prefabrication solves the problems of transporting and hoisting large-sized components on-site, enhancing the applicability of this invention.

[0028] The foundation steel beam 2 can be made of hot-rolled H-beams of Q235B, Q355B, or other equivalent materials, and is arranged along the load-bearing wall line of the prefabricated cabin to form a crisscrossing grid-like beam structure. Several (usually four) lifting lugs 4 are welded to pre-set positions on the top of the foundation steel beam 2. The lifting lugs are made of Q235B, Q355B, or other equivalent steel plates and are used for construction hoisting.

[0029] The connecting steel sleeve 3 is a closed-top circular cylindrical structure, prefabricated in the factory using Q235B, Q355B, or other equivalent materials. A circular grouting hole 3-1 with a diameter of 100mm is provided at the corresponding position of its closed top. The inner diameter of the sleeve is the outer diameter of the reinforced concrete precast pile 1 plus 80mm~200mm, to leave an annular gap between the inner wall of the connecting steel sleeve 3 and the outer wall of the reinforced concrete precast pile 1. This annular gap facilitates the movement of the connecting steel sleeve 3 relative to the reinforced concrete precast pile 1 to adjust the elevation of the connecting steel sleeve 3, and also facilitates grouting, improving the overall integrity of the connecting steel sleeve 3 and the reinforced concrete precast pile 1.

[0030] The hollow interior of the precast reinforced concrete pile 1 is fixedly fitted with an inner pile support plate 3-3. The inner pile support plate 3-3 can be made of Q235B, Q355B, or other equivalent steel plates. The inner cavity of the pile is formed by the inner pile support plate 3-3 and the inner wall of the portion of the precast reinforced concrete pile 1 located above the inner pile support plate 3-3. The inner pile support plate 3-3 serves as a formwork for bottom pouring and for elevation adjustment. Specifically:

[0031] A movable template 3-2 is installed at the bottom of the annular gap. The movable template 3-2 is fitted around the outer periphery of the precast reinforced concrete pile 1 and fixed to the bottom of the connecting steel sleeve 3. The movable template 3-2 seals the bottom of the annular gap to prevent grout from flowing out. At the same time, the movable template 3-2 can also move along the axial direction of the precast reinforced concrete pile 1. The overall assembled steel frame is lifted by a crane using lifting lugs 4. The connecting steel sleeve 3 is initially fitted onto the top of the precast reinforced concrete pile 1. After the elevation of the connecting steel sleeve 3 meets the design requirements by moving it relative to the precast reinforced concrete pile 1, grout is injected into the pouring space through the grouting hole 3-1 to lock the elevation of the connecting steel sleeve 3. After the grout solidifies, the pile support plate 3-3, movable template 3-2, connecting steel sleeve 3, and grout body are solidified into a whole, with a clear force transmission path.

[0032] The prefabricated electrochemical energy storage cabin foundation structure disclosed in this invention is mainly composed of prefabricated components. Compared with the traditional cast-in-place reinforced concrete foundation, it eliminates the processes of excavation, formwork, pouring and curing, significantly simplifying the process flow on the construction site and further shortening the construction time.

[0033] Prefabricated steel frames can be prefabricated as a whole or in sections, flexibly adapting to various transportation and on-site construction conditions.

[0034] The prefabricated steel frame and prefabricated piles of the prefabricated electrochemical energy storage cabin foundation structure disclosed in this invention are connected by steel sleeves and post-grouting, resulting in a stable and reliable connection. Furthermore, this connection method allows for a certain range of pile foundation construction errors. Even if the pile foundation position deviates or the pile top elevation does not reach the design elevation, adjustments can be made by changing the elevation of the connecting steel sleeves without affecting subsequent installation, greatly improving construction flexibility and fault tolerance.

[0035] The piles and the prefabricated steel frame form a rigid connection, and the pile foundation is subjected to overall stress, which significantly improves the overall lateral resistance of the pile foundation.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated electrochemical energy storage module foundation, characterized in that, It includes precast reinforced concrete piles (1) and an assembled steel frame erected on top of the precast reinforced concrete piles (1); The prefabricated steel frame includes a foundation steel beam (2) and a connecting steel sleeve (3). The foundation steel beam (2) is arranged in a crisscross pattern and is connected to the connecting steel sleeve (3) at the crisscrossing points. The axis of the connecting steel sleeve (3) is perpendicular to the extension direction of the foundation steel beam (2). The connecting steel sleeve (3) is a cylindrical structure with a closed top. It is axially adjustable and fitted around the top of the precast reinforced concrete pile (1). A pouring space is formed between the connecting steel sleeve (3) and the precast reinforced concrete pile (1). A grouting hole (3-1) is opened at the closed top of the connecting steel sleeve (3). The elevation position of the connecting steel sleeve (3) is locked by the grout filling the pouring space.

2. The prefabricated electrochemical energy storage module foundation according to claim 1, characterized in that, An annular gap is formed between the inner wall of the connecting steel sleeve (3) and the outer wall of the precast reinforced concrete pile (1), and the pouring space includes the annular gap.

3. The prefabricated electrochemical energy storage module foundation according to claim 2, characterized in that... A movable template (3-2) is provided at the bottom of the annular gap. The movable template (3-2) is fitted around the outer periphery of the precast reinforced concrete pile (1) and fixed to the bottom of the connecting steel sleeve (3).

4. The prefabricated electrochemical energy storage module foundation according to claim 2, characterized in that, The precast reinforced concrete pile (1) is a hollow tubular structure with an inner support plate (3-3) inside. The inner cavity of the pile is formed by the inner support plate (3-3) and the inner wall of the portion of the precast reinforced concrete pile (1) located above the inner support plate (3-3). The pouring space includes the inner cavity of the pile.

5. The prefabricated electrochemical energy storage module foundation according to claim 1, characterized in that, The basic steel beam (2) and the connecting steel sleeve (3) are prefabricated in the factory to form an integral assembled steel frame.

6. The prefabricated electrochemical energy storage module foundation according to claim 1, characterized in that, The basic steel beam (2) and the connecting steel sleeve (3) are prefabricated in sections and connected on site through segmented connection nodes (5) to form the assembled steel frame.

7. The prefabricated electrochemical energy storage module foundation according to claim 6, characterized in that, The segmented connection node (5) includes a connecting plate set at the ends of the foundation steel beams (2) and the connecting steel sleeve (3) on both sides of the splice. The connecting plate includes an upper connecting plate (5-1), a lower connecting plate (5-2) and a web connecting plate (5-3). The upper connecting plate (5-1) is welded between the upper flange plates of the foundation steel beam (2) and the connecting steel sleeve (3). The lower connecting plate (5-2) is welded between the lower flange plates of the foundation steel beam (2) and the connecting steel sleeve (3). The web connecting plate (5-3) is fixed to the web of the foundation steel beam (2) and the connecting steel sleeve (3) by high-strength bolts (5-4).

8. The prefabricated electrochemical energy storage module foundation according to claim 1 or 2, characterized in that, The top of the foundation steel beam (2) is provided with a lifting lug (4).

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