Reinforcement cage and photovoltaic pile

Abstract

The utility model provides a reinforcement cage and a photovoltaic pile column, and relates to the technical field of photovoltaic support foundations, the reinforcement cage is arranged in a hollow column shape, the two ends of the reinforcement cage in the length direction are the first end and the second end respectively, the reinforcement cage comprises a plurality of strip-shaped main reinforcements which are arranged at intervals in the circumferential direction to form a hollow-column-shaped main reinforcement array in a surrounding mode; the stirrups are fixed on the main reinforcement array in a surrounding manner; the reinforcing ribs extend in the length direction of the strip-shaped main ribs and are fixed to the stirrups and / or the strip-shaped main ribs, the reinforcing ribs extend from the middle of the columnar cage body to the two ends of the columnar cage body, and the reinforcing ribs are distributed along the peripheries or the inner peripheries of the stirrups at intervals; the reinforcing rib comprises a long rib and a short rib, and at least one end part of the long rib and one end part of the short rib are not flush with each other in the length direction of the strip-shaped main rib. According to the photovoltaic pile using the reinforcement cage, the rigidity of the pile is improved, and settlement caused by self weight is reduced.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic support foundation technology, specifically to a steel cage and a photovoltaic pile. Background Technology

[0002] With the rapid development of the photovoltaic industry and the increasingly complete supporting facilities such as photovoltaic brackets and photovoltaic panels, a systematic manufacturing and construction system for the pillars used to install photovoltaic bracket components has not yet been formed. In most cases, precast piles from building construction are directly used as the foundation for photovoltaic brackets. In building construction, precast piles are completely embedded in the soil, and the surrounding cement and soil provide constraints for the precast piles, so the requirements for the bending and shear resistance of the precast piles are relatively small. The tidal flats and shallow sea areas can be roughly divided into three zones from top to bottom: the water level zone, foundation zone one, and foundation zone two. The water level zone is the area below the water surface but above the ground, and its lateral constraint on the photovoltaic support foundation is very small. Foundation zone one is the area below the ground, close to the ground surface. The soil in foundation zone one is soft and has a high water content, so the lateral constraint is slightly increased compared to the water level zone, but the increase is limited. Foundation zone two is the area below the ground, far from the ground surface. The soil in foundation zone two gradually improves, and its lateral constraint on the photovoltaic support foundation is greater. When photovoltaic support foundations are applied to tidal flats and shallow sea areas, during typhoons, the photovoltaic support will exert a large horizontal load on the upper part of the photovoltaic support foundation. The photovoltaic support foundation located in foundation zone one will bear a relatively large bending moment. Directly using small-diameter precast cylindrical piles as photovoltaic support foundations in tidal flats and shallow sea areas can easily lead to deformation due to insufficient stiffness. While using large-diameter precast cylindrical piles can meet the stiffness requirements, they are prone to large settlement due to their large self-weight. Utility Model Content

[0003] The technical problem to be solved by this application is how to improve the rigidity of photovoltaic piles while reducing settlement caused by their own weight. In view of this, this application provides a steel cage and a photovoltaic pile.

[0004] In a first aspect, this application provides a reinforcing cage, which is arranged in a hollow column shape, with two ends along its length being a first end and a second end, the reinforcing cage comprising:

[0005] Multiple strip-shaped main reinforcement bars are arranged circumferentially to form a hollow column-shaped main reinforcement array;

[0006] Stirrups, which are fixed around the main reinforcement array; and

[0007] Multiple reinforcing ribs extend along the length of the main bar and are fixed to the stirrups and / or the main bar. The reinforcing ribs extend from the middle of the columnar cage to both ends of the columnar cage. The reinforcing ribs are distributed at intervals along the outer or inner periphery of the stirrups.

[0008] The reinforcing ribs include long ribs and short ribs, and at least one end of the long ribs and one end of the short ribs are not flush with each other along the length of the main rib.

[0009] Compared with existing technologies, the reinforcing cage proposed in this application has the following advantages: By setting reinforcing ribs in the reinforcing cage, the rigidity of the cage is strengthened, enabling photovoltaic piles formed using this cage to withstand greater bending moments without needing to use reinforcing cages with larger cross-sectional dimensions to form photovoltaic piles with larger cross-sectional dimensions. Compared to photovoltaic piles with larger cross-sectional dimensions, photovoltaic piles formed using this reinforcing cage have smaller cross-sectional dimensions and are lighter, which can reduce settlement caused by their own weight and lower production costs. In addition, the smaller cross-sectional dimensions of photovoltaic piles formed using this reinforcing cage result in lower wind resistance when used in coastal areas, and with the reinforcement of the ribs, they can withstand stronger typhoons. The use of alternating long and short ribs further reduces the weight of the reinforcing cage while meeting load-bearing requirements, thus reducing settlement caused by their own weight.

[0010] In a preferred embodiment, the two ends of the long rib are the third end and the fourth end, and the two ends of the short rib are the fifth end and the sixth end, respectively. The third end and the fifth end are disposed close to the first end, and the fourth end and the sixth end are disposed close to the second end. The third end is located between the first end and the fifth end, and the long rib and the short rib are arranged alternately.

[0011] Compared with existing technologies, the above-mentioned technical solution can make the bending moment of the steel cage increase gradually from the first end to the fifth end, with a slow transition, thereby avoiding the sudden damage of the photovoltaic pile column formed by the steel cage under unexpected loads such as typhoons.

[0012] In a preferred embodiment, the strip-shaped main reinforcement bars are distributed at equal intervals along the outer periphery of the columnar cage, and the reinforcing bars are arranged between two adjacent strip-shaped main reinforcement bars.

[0013] Compared with existing technologies, the above technical solution can ensure the uniform circumferential distribution of the steel cage, thereby ensuring the uniformity of the prefabrication of photovoltaic piles and improving the quality and rigidity of photovoltaic piles.

[0014] In a preferred embodiment, the reinforcing rib is a threaded steel bar.

[0015] In a preferred embodiment, the distances from the fourth end and the sixth end to the second end are equal.

[0016] In a preferred embodiment, both the reinforcing bar and the strip-shaped main bar are connected to the inside of the stirrup.

[0017] In a preferred embodiment, the cross-section of the reinforcing cage is arranged in a circular or polygonal ring shape.

[0018] Secondly, this application provides a photovoltaic pile column, including an integrally prefabricated pile column, wherein a steel cage as described above is pre-embedded inside the pile column.

[0019] Compared with existing technologies, the above-mentioned technical solution can enhance the rigidity of photovoltaic (PV) piles, enabling PV piles prefabricated with this steel cage to withstand greater bending moments without the need to prefabricate PV piles with larger cross-sectional dimensions using steel cages. Compared to PV piles with larger cross-sectional dimensions, PV piles prefabricated with this steel cage have smaller cross-sectional dimensions and are lighter, which can reduce settlement caused by their own weight and lower production costs. In addition, the smaller cross-sectional dimensions of PV piles prefabricated with this steel cage result in lower wind resistance when used in coastal areas, and with the reinforcement of the reinforcing ribs, they can withstand typhoons of greater magnitude. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the steel cage structure of Embodiment 1 of this application;

[0021] Figure 2 This is a schematic diagram of the structure of a photovoltaic pile column according to Embodiment 2 of this application;

[0022] Figure 3 This is a schematic diagram of the lower end plate of Embodiment 2 of this application;

[0023] Figure 4 This is a force analysis diagram of the upper end of the photovoltaic pile column in Embodiment 2 of this application when it is subjected to a horizontal load.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10. Reinforcing cage; 10', First end; 10'', Second end; 11. Strip main reinforcement; 111. Upset head; 12. Stirrup; 13. Reinforcing bar; 131. Long bar; 131', Third end; 131'', Fourth end; 132. Short bar; 132', Fifth end; 132'', Sixth end; 20. Pile column; 21. Upper end plate; 22. Lower end plate; 221. Anchor hole; 222. Through-reinforcement hole; 223. Hanging reinforcement hole. Detailed Implementation

[0026] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0027] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0028] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Example

[0030] Reference Figure 1 This application discloses a reinforcing cage. The reinforcing cage 10 is arranged in a hollow column shape and includes strip-shaped main bars 11, stirrups 12, and reinforcing bars 13. Multiple strip-shaped main bars 11 are arranged circumferentially at intervals to form a hollow column-shaped main bar array. Stirrups 12 are fixed around the outside of the hollow column-shaped cage formed by the multiple strip-shaped main bars 11. The stirrups 12 are spirally arranged, and currently, the stirrups 12 and the strip-shaped main bars 11 are usually connected and fixed by welding. Reinforcing bars 13 extend along the length of the column-shaped cage, and multiple reinforcing bars 13 are distributed at intervals along the outer or inner circumference of the stirrups. The reinforcing bars 13 are fixed to the stirrups 12 and / or the strip-shaped main bars 11.

[0031] The reinforcing rib 13 strengthens the rigidity of the steel cage 10, enabling the photovoltaic pile 20 formed using this steel cage 10 to withstand greater bending moments without needing to use a larger cross-sectional steel cage 10 to form a photovoltaic pile 20 with a larger cross-sectional size. Compared to photovoltaic piles 20 with larger cross-sectional sizes, the photovoltaic pile 20 formed using this steel cage 10 has a smaller cross-sectional size and is lighter, which can reduce settlement caused by its own weight and lower production costs. In addition, the smaller cross-sectional size of the photovoltaic pile 20 formed using this steel cage 10 results in less wind resistance when used in coastal areas, and with the reinforcement of the reinforcing rib, it can withstand typhoons of a higher magnitude.

[0032] Preferably, the reinforcing bar 13 is fixed to the stirrup 12, which on the one hand makes it less likely for the main bar 11 to be interfered with by the reinforcing bar 13 during tensioning, and on the other hand makes the circumferential stress distribution of the photovoltaic pile column 20 formed by the steel cage 10 more uniform.

[0033] Furthermore, the two ends of the reinforcing cage 10 along its length are designated as the first end 10' and the second end 10''. Reinforcing ribs 13 extend from the middle of the columnar cage towards both ends. One end of the reinforcing rib 13 is located between the first end 10' and the middle of the columnar cage, and the other end is located between the second end 10'' and the middle of the columnar cage. The reinforcing rib 13 is positioned with pre-reserved distances between its ends and the ends of the reinforcing cage 10. This arrangement, while increasing the bending moment at the middle of the photovoltaic pile column 20, further saves materials, reduces production costs, and minimizes settlement due to its own weight. The distances between the ends of the reinforcing rib 13 and the first and second ends 10'' can be adjusted according to design requirements and construction scenarios.

[0034] Furthermore, the reinforcing rib 13 includes a long rib 131 and a short rib 132, at least one end of the long rib 131 and one end of the short rib 132 are not flush with each other along the length of the strip-shaped main rib 11. Specifically, with the direction indicated by arrow X as upward and the opposite direction of arrow X as downward, the two ends of the long rib 131 are the third end 131' and the fourth end 131'', respectively, and the two ends of the short rib 132 are the fifth end 132' and the sixth end 132'', respectively. The third end 131' and the fifth end 132' are located near the first end 10', and the fourth end 131'' and the sixth end 132'' are located near the second end 10''. The fourth end 131'' and the sixth end 132'' are at the same height, and the third end 131' is located between the first end 10' and the fifth end 132''. The long rib 131 and the short rib 132 are staggered along the circumference of the columnar cage. In areas with high bending moments, long reinforcing bars 131 and short reinforcing bars 132 are used to cover the stress-bearing area, increasing the ultimate bending moment of the pile column 20. In areas with low bending moments, these bars are cut off to save material, as only the upper end of the long reinforcing bars 131 needs to cover the area. This allows the bending moment in the upper part of the photovoltaic pile column 20 using this steel cage 10 to increase gradually from top to bottom, preventing excessive stress concentration in the steel cage and reducing production costs. The difference between the lengths of the long reinforcing bars 131 and 132 can be adjusted according to design requirements and construction scenarios.

[0035] Furthermore, the number of reinforcing bars 13 is half the number of strip main bars 11. The strip main bars 11 are evenly distributed along the circumference of the columnar cage, and the reinforcing bars 13 are located between two adjacent strip main bars 11, so that the steel cage 10 remains consistent along the circumference.

[0036] Furthermore, the distance between the reinforcing rib 13 and the adjacent two main reinforcing bars 11 is equal, so that a sufficiently large gap is maintained between the reinforcing rib 13 and the main reinforcing bars 11 of the steel cage 10. This facilitates the flow of concrete from the outside of the steel cage 10 to the inside of the steel cage 10 or from the inside of the steel cage 10 to the outside of the steel cage 10 during the forming of the photovoltaic pile column 20. This improves the uniformity of the photovoltaic pile column 20 formed by the steel cage 10, thereby improving the quality of the photovoltaic pile column 20.

[0037] Furthermore, the reinforcing rib 13 is made of high-strength threaded steel, or other steel bars with strength close to that of high-strength threaded steel can be used, depending on the required stiffness reinforcement of the photovoltaic pile column 20. High-strength threaded steel has good ductility, and the use of strip-shaped main ribs 11 in conjunction with the threaded steel increases the overall ductility of the photovoltaic pile column 20 and reduces cyclic fatigue failure of the photovoltaic pile column 20.

[0038] Furthermore, the reinforcing rib 13 can be connected to the outside of the stirrup 12 or to the inside of the stirrup 12. Currently, the reinforcing rib 13 is usually fixed to the inside of the stirrup 12 by welding.

[0039] Preferably, the cross-section of the reinforcing cage 10 is arranged in a circular or polygonal ring. When the cross-section of the reinforcing cage 10 is arranged in a circular ring, multiple strip-shaped main bars 11 are evenly distributed along the circumference of the reinforcing cage 10, and multiple reinforcing bars 13 are evenly distributed along the circumference of the reinforcing cage 10.

[0040] In summary, the working principle of the steel cage in the above embodiment is as follows: by setting reinforcing ribs 13 in the steel cage 10, the steel cage 10 is strengthened, so that the photovoltaic pile column 20 formed using the steel cage 10 has greater bending resistance, without the need to use a steel cage 10 with a larger cross-sectional size to form a photovoltaic pile column 20 with a larger cross-sectional size. This can improve the bending resistance of the pile column while reducing its self-weight, allowing it to withstand larger wind loads during typhoons without easily causing excessive deformation, and reducing settlement caused by its own weight. The use of long ribs 131 and short ribs 132 arranged alternately along the circumference can further reduce the weight of the steel cage 10 while meeting the load-bearing requirements. It also allows the bending moment of the photovoltaic pile column 20 using the steel cage 10 to gradually increase from the first end 10' to the fifth end 132', with a slow transition, thereby preventing the photovoltaic pile column 20 formed using the steel cage from suddenly failing under unexpected loads such as typhoons. Example

[0041] Reference Figure 2This application discloses a photovoltaic pile column, including a prefabricated pile column 20 with a pre-embedded steel cage 10 inside. The steel cage 10 is a hollow column and includes strip-shaped main bars 11, stirrups 12, and reinforcing bars 13. Multiple strip-shaped main bars 11 are arranged at intervals around the hollow column to form a main bar array. The stirrups 12 are fixed around the outside of the hollow column formed by the multiple strip-shaped main bars 11, and are spirally arranged. Currently, the stirrups 12 and the strip-shaped main bars 11 are usually connected and fixed by welding. Multiple reinforcing bars 13 extend along the length of the column-shaped cage and are fixed to the stirrups 12 and / or the strip-shaped main bars 11.

[0042] The reinforcing rib 13 strengthens the rigidity of the steel cage 10, enabling the photovoltaic pile 20 prefabricated using this steel cage 10 to withstand greater bending moments without the need for a larger cross-sectional area. Compared to a photovoltaic pile 20 with a larger cross-sectional area, the photovoltaic pile 20 prefabricated using this steel cage 10 has a smaller cross-sectional area and is lighter, reducing settlement due to its own weight and lowering production costs. Furthermore, the smaller cross-sectional area of ​​the photovoltaic pile 20 prefabricated using this steel cage 10 results in less wind resistance when used in coastal areas, and with the reinforcement of the reinforcing rib 13, it can withstand stronger typhoons.

[0043] Preferably, the reinforcing bar 13 is connected to the stirrup 12, which on the one hand makes it less likely for the main bar 11 to be interfered with by the reinforcing bar 13 during tensioning, and on the other hand makes the circumferential stress distribution of the photovoltaic pile column 20 prefabricated using the steel cage 10 more uniform.

[0044] Furthermore, the two ends of the steel cage 10 along its length are respectively the first end 10' and the second end 10''. The reinforcing rib 13 extends from the middle of the columnar cage to both ends. One end of the reinforcing rib 13 is located between the first end 10' and the middle of the columnar cage, and the other end of the reinforcing rib 13 is located between the second end 10'' and the middle of the columnar cage. By pre-reserving a distance between both ends of the reinforcing rib 13 and the two ends of the steel cage 10, the bending moment at the middle of the photovoltaic pile column 20 can be increased while further saving materials, reducing production costs, and minimizing settlement due to its own weight.

[0045] Furthermore, the reinforcing rib 13 includes a long rib 131 and a short rib 132, with the direction indicated by arrow X as the upper part and the opposite direction indicated by arrow X as the lower part. The two ends of the long rib 131 are the third end 131' and the fourth end 131'', respectively. The two ends of the short rib 132 are the fifth end 132' and the sixth end 132'', respectively. The third end 131' and the fifth end 132' are located close to the first end 10', and the fourth end 131'' and the sixth end 132'' are located close to the second end 10''. The fourth end 131'' and the sixth end 132'' are at the same height, and the third end 131' is located between the first end 10' and the fifth end 132''. The long rib 131 and the short rib 132 are staggered along the outer periphery of the columnar cage. In areas with high bending moments, long reinforcing bars 131 and short reinforcing bars 132 are used to cover the stress-bearing area, increasing the ultimate bending moment of the pile column 20. In areas with low bending moments, these bars are cut off to save material, as only the upper end of the long reinforcing bars 131 needs to cover the area. This allows the bending moment in the upper part of the photovoltaic pile column 20 using this steel cage 10 to increase gradually from top to bottom, preventing excessive stress concentration in the steel cage and reducing production costs. The difference between the lengths of the long reinforcing bars 131 and 132 can be adjusted according to design requirements and construction scenarios.

[0046] Furthermore, the reinforcing rib 13 is made of high-strength threaded steel, or other steel bars with strength close to that of high-strength threaded steel can be used, depending on the required stiffness reinforcement of the photovoltaic pile column 20. High-strength threaded steel has good ductility, and the use of strip-shaped main reinforcement 11 in conjunction with the threaded steel increases the overall ductility of the precast pile column 20 and reduces fatigue failure of the pile column 20 under cyclic loading.

[0047] Furthermore, referring to Figure 2 and Figure 3The pile column 20 also includes an upper end plate 21 at the upper end and a lower end plate 22 at the lower end. The upper end plate 21 is connected to the upper end of the strip main reinforcement 11 to provide upward tension to the strip main reinforcement 11, and the lower end plate 22 is connected to the lower end of the strip main reinforcement 11 to provide downward tension to the strip main reinforcement 11. The connection structure between the upper end plate 21 and the upper end of the strip main reinforcement 11 and the connection structure between the lower end plate 22 and the lower end of the strip main reinforcement 11 are the same. In this embodiment, the connection structure between the lower end plate 22 and the lower end of the strip main reinforcement 11 will be described as an example. Both ends of the strip-shaped main reinforcement 11 are provided with upset heads 111, the diameter of which is larger than the diameter of the strip-shaped main reinforcement 11. The lower end plate 22 is provided with anchoring holes 221, the diameter of which is larger than the diameter of the upset heads 111. The anchoring holes 221 extend from the upper end face to the lower end face of the lower end plate 22. The anchoring holes 221 are threaded holes to facilitate connection with tensioning bolts and to facilitate tensioning of the reinforcement cage. The lower end plate 22 is also provided with through holes 222, which are elongated and extend circumferentially along the lower end plate 22. The through holes 222 extend from the upper end face to the lower end face of the lower end plate 22 and are used for the strip-shaped main reinforcement 11 to pass through. One end of the through hole 222 is connected to the anchoring hole 221. The width of the through hole 222 is smaller than the diameter of the upset heads 111. The lower end plate 22 is provided with a rib hanging hole 223 that communicates with the other end of the rib hole 222. The rib hanging hole 223 is a stepped hole. The maximum diameter of the rib hanging hole 223 is greater than the diameter of the upsetting head 111, and the minimum diameter of the rib hanging hole 223 is greater than the diameter of the strip main rib 11 and smaller than the diameter of the upsetting head 111. The upsetting head 111 can be snapped into the rib hanging hole 223 to keep the lower end surface of the lower end plate 22 flat.

[0048] In summary, the working principle of the photovoltaic pile column in the above embodiment is as follows: by setting the reinforcing rib 13 connected to the stirrup 12 in the photovoltaic pile column 20, the rigidity of the photovoltaic pile column 20 is strengthened, so that the photovoltaic pile column 20 can withstand a larger bending moment without using a photovoltaic pile column 20 with a larger cross-sectional size. At the same time, it is less prone to settlement than a photovoltaic pile column 20 with a larger cross-sectional size, and the production cost is low.

[0049] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0050] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0051] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A steel reinforcement cage, characterized in that, The reinforcing cage (10) is arranged in a hollow column shape, and the two ends of the reinforcing cage (10) in the length direction are respectively the first end (10') and the second end (10''). The reinforcing cage (10) includes: Multiple strip-shaped main reinforcement bars (11) are arranged circumferentially to form a hollow column-shaped main reinforcement array; Stirrups (12) are fixed around the main reinforcement array; and Multiple reinforcing ribs (13) extend along the length of the strip main reinforcement (11) and are fixed to the stirrup (12) and / or the strip main reinforcement (11). The reinforcing ribs (13) extend from the middle of the columnar cage to both ends of the columnar cage. The reinforcing ribs (13) are distributed at intervals along the outer or inner periphery of the stirrup (12). The reinforcing rib (13) includes a long rib (131) and a short rib (132), and at least one end of the long rib (131) and one end of the short rib (132) are not flush with each other in the length direction of the strip main rib (11).

2. The reinforcing cage according to claim 1, characterized in that, The long rib (131) has a third end (131') and a fourth end (131'') at its two ends, and the short rib (132) has a fifth end (132') and a sixth end (132'') at its two ends, respectively. The third end (131') and the fifth end (132') are located close to the first end (10'), and the fourth end (131'') and the sixth end (132'') are located close to the second end (10''). The third end (131') is located between the first end (10') and the fifth end (132'). The long rib (131) and the short rib (132) are arranged alternately.

3. The reinforcing cage according to claim 2, characterized in that, The strip-shaped main reinforcement (11) is distributed at equal intervals along the outer periphery of the columnar cage, and the reinforcing reinforcement (13) is arranged between two adjacent strip-shaped main reinforcements (11).

4. The reinforcing cage according to claim 2, characterized in that, The reinforcing rib (13) is a threaded steel bar.

5. The reinforcing cage according to claim 2, characterized in that, The distances from the fourth end (131'') and the sixth end (132'') to the second end (10'') are equal.

6. The reinforcing cage according to any one of claims 1-5, characterized in that, The reinforcing bar (13) and the strip main bar (11) are both fixed to the inside of the stirrup (12).

7. The reinforcing cage according to any one of claims 1-5, characterized in that, The cross-section of the steel cage (10) is arranged in a circular or polygonal ring shape.

8. A photovoltaic pile, characterized in that, It includes an integrally prefabricated pile column (20), wherein a steel cage (10) as described in any one of claims 1-7 is pre-embedded in the pile column (20).

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