Reinforcing structure of photovoltaic support steel pipe pile foundation

Abstract

The utility model belongs to photovoltaic support reinforcing technical field, concretely relates to a kind of reinforcing structure of photovoltaic support steel pipe pile foundation.Under the premise of avoiding demolition reconstruction, the bearing capacity and deformation resistance of the steel pipe pile foundation can be improved. The original steel pipe pile foundation concrete retaining part covers the original reinforcing cage retaining section and is located below the floor. The original embedded section of the original column is coaxially arranged in the original steel pipe pile foundation reinforcing cage and is connected. The original embedded section of the original column corresponds to the original reinforcing cage section. The lower end of the original column is higher than the upper end of the original steel pipe pile foundation concrete retaining part. The upper end of the reinforcing part is higher than the upper end of the original steel pipe pile foundation reinforcing cage. The lower end of the reinforcing part is lower than the upper end of the original steel pipe pile foundation concrete retaining part. The original column, the original steel pipe pile foundation reinforcing cage and the original steel pipe pile foundation concrete retaining part are located inside the reinforcing reinforcing cage. The reinforcing rib is horizontally arranged between the reinforcing reinforcing cage and the original reinforcing cage section. Both ends of the reinforcing rib are connected to the reinforcing reinforcing cage.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic support reinforcement technology, specifically relating to a reinforcement structure for a photovoltaic support steel pipe pile foundation. Background Technology

[0002] In mountain photovoltaic projects, the minimum ground clearance of photovoltaic support structures varies across regions based on land use types, typically ranging from 1.0 to 2.5 meters. The support columns consist of adjacent installation sections and pre-embedded sections. The upper surface of the steel pipe pile foundation is flush with the ground surface. Due to constraints on the minimum ground clearance and requirements for strength and stability, the pre-embedded sections of the columns are relatively long, and the cross-sectional dimensions of the columns are large. This results in disadvantages such as high steel consumption and high costs.

[0003] To save on steel consumption, the current practice is to expose the steel pipe pile foundation above ground level, moving the fixed end of the foundation upwards, shortening the column length, and reducing the column's cross-sectional dimensions. This offers advantages such as reduced steel consumption and lower costs. Specifically, the reinforcing cage of the steel pipe pile foundation is placed around the pre-embedded section of the column. The vertical bars of the reinforcing cage are welded to the column, and then concrete is poured into the pile hole, forming an integral structure with the pre-embedded section of the column, the reinforcing cage, and the concrete. Theoretically, this method achieves a consolidation effect between the column and the steel pipe pile foundation. However, due to the thin wall of the steel pipe column, the limited welding contact area between the reinforcing cage and the column, and the variability of the welding process, in mountainous photovoltaic projects where wind loads are significantly variable due to complex terrain and weather conditions, the connection between the reinforcing cage and the column is prone to failure. Cracks can easily appear in the concrete portion of the steel pipe pile foundation, leading to the photovoltaic support column being tilted.

[0004] When the above situations occur, the traditional approach is to demolish and rebuild the original steel pipe pile foundation. However, the rebuilt steel pipe pile foundation may still experience problems such as failure of the connection between the steel reinforcement cage and the column, cracks in the concrete of the steel pipe pile foundation, and the photovoltaic support column being tilted. It also has problems such as long construction period, large material consumption, and high capital investment. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a reinforced structure for the steel pipe pile foundation of photovoltaic support, which can improve the bearing capacity and deformation resistance of the steel pipe pile foundation without demolition and reconstruction.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a reinforced structure for the steel pipe pile foundation of a photovoltaic support, including the original steel pipe pile foundation steel cage, the original steel pipe pile foundation concrete retention part, the original column and the reinforced part;

[0007] The original steel pipe pile foundation reinforcement cage includes an existing reinforcement cage reuse section and an original reinforcement cage retention section arranged adjacent to each other. The original steel pipe pile foundation concrete retention section covers the original reinforcement cage retention section and is located below the ground level.

[0008] The original embedded section of the original column is coaxially arranged within the original steel pipe pile foundation reinforcement cage and connected to it. The original embedded section of the original column is arranged corresponding to the reused section of the original reinforcement cage. The lower end of the original column is higher than the upper end of the original steel pipe pile foundation concrete retention part.

[0009] The upper end of the reinforcing part is higher than the upper end of the original steel pipe pile foundation reinforcement cage, and the lower end of the reinforcing part is lower than the upper end of the original steel pipe pile foundation concrete retention part; the reinforcing part includes a reinforced concrete part, and a reinforced steel cage and reinforcing bars disposed within the reinforced concrete part;

[0010] The original column, the original steel pipe pile foundation reinforcement cage, and the original steel pipe pile foundation concrete retention part are all located inside the reinforcement cage; the upper end of the reinforcement cage is arranged corresponding to the upper end of the original steel pipe pile foundation reinforcement cage, and the lower end of the reinforcement cage is lower than the upper end of the original steel pipe pile foundation concrete retention part.

[0011] The reinforcing ribs are horizontally positioned between the reinforcing steel cage and the existing section of the original steel cage, with both ends of the reinforcing ribs connected to the reinforcing steel cage. Multiple reinforcing ribs are provided, and these multiple reinforcing ribs are crisscrossed to form reinforcing rib frame units. Multiple sets of reinforcing rib frame units are provided, and these sets of reinforcing rib frame units are arranged in pairs along the vertical direction.

[0012] Furthermore, the original embedded section of the original column is welded to the original vertical reinforcement of the original steel pipe pile foundation steel cage to form a weld joint.

[0013] Furthermore, the welded joint is adjacent to the upper end of the original steel pipe pile foundation reinforcement cage.

[0014] Furthermore, both ends of the reinforcing rib are welded to the annular stirrups of the reinforcing steel cage.

[0015] Furthermore, the outer surface of the original steel pipe pile foundation concrete retention section, located within the reinforced concrete section, is provided with a roughened section.

[0016] Furthermore, the annular stirrups and vertical bars of the reinforcing cage are all threaded steel bars.

[0017] Furthermore, the reinforcing section includes an above-ground section and an underground section arranged adjacent to each other, the length of the underground section is L1, the length of the above-ground section is L2, and L1 is less than L2.

[0018] Compared with existing technologies, the beneficial effects of this utility model are: This utility model provides a reinforced structure for the steel pipe pile foundation of a photovoltaic support, which can improve the bearing capacity and deformation resistance of the steel pipe pile foundation without demolition and reconstruction. It also has advantages such as shortening the construction period, large material usage, cost savings, no regional or climatic restrictions, and strong versatility. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure after the damaged concrete covering the original steel reinforcement cage section and the original embedded section has been removed.

[0020] Figure 2 This is a schematic diagram of the structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the arrangement of the reinforcing ribs;

[0022] Attached reference numerals: 1-Original steel pipe pile foundation reinforcement cage; 101-Reused section of original reinforcement cage; 102-Retained section of original reinforcement cage; 2-Retained concrete section of original steel pipe pile foundation; 3-Original column; 301-Original embedded section; 4-Reinforcement section; 401-Reinforced concrete section; 402-Reinforced reinforcement cage; 4021-Circular stirrup; 4022-Vertical reinforcement; 403-Reinforcing reinforcement; 5-Ground floor. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] The reinforced structure of the photovoltaic support steel pipe pile foundation includes the original steel pipe pile foundation steel cage 1, the original steel pipe pile foundation concrete retention part 2, the original column 3, and the reinforced part 4;

[0025] The original steel pipe pile foundation reinforcement cage 1 includes an original reinforcement cage reuse section 101 and an original reinforcement cage retention section 102 arranged adjacent to each other. The original steel pipe pile foundation concrete retention section 2 covers the original reinforcement cage retention section 102 and is located below the ground level 5.

[0026] The original embedded section 301 of the original column 3 is coaxially arranged inside and connected to the original steel pipe pile foundation reinforcement cage 1. The original embedded section 301 of the original column 3 is arranged corresponding to the original reinforcement cage reuse section 101. The lower end of the original column 3 is higher than the upper end of the original steel pipe pile foundation concrete retention part 2.

[0027] The upper end of the reinforcing part 4 is higher than the upper end of the original steel pipe pile foundation reinforcement cage 1, and the lower end of the reinforcing part 4 is lower than the upper end of the original steel pipe pile foundation concrete retention part 2; the reinforcing part 4 includes a reinforced concrete part 401, and a reinforced steel cage 402 and a reinforcing bar 403 disposed within the reinforced concrete part 401.

[0028] The original column 3, the original steel pipe pile foundation reinforcement cage 1, and the original steel pipe pile foundation concrete retention part 2 are all located inside the reinforcement cage 402; the upper end of the reinforcement cage 402 is arranged corresponding to the upper end of the original steel pipe pile foundation reinforcement cage 1, and the lower end of the reinforcement cage 402 is lower than the upper end of the original steel pipe pile foundation concrete retention part 2.

[0029] The reinforcing rib 403 is horizontally positioned between the reinforcing steel cage 402 and the original steel cage reuse section 101, with both ends of the reinforcing rib 403 connected to the reinforcing steel cage 402; multiple reinforcing ribs 403 are provided, and the multiple reinforcing ribs 403 are crisscrossed to form a reinforcing rib frame unit; multiple sets of reinforcing rib frame units are provided, and the multiple sets of reinforcing rib frame units are arranged in pairs along the vertical direction.

[0030] During construction, the damaged concrete covering the original reclaimed section 101 and the original embedded section 301 of the steel pipe pile foundation is first removed, chiseling down to below the lower end of the original column 3, exposing the entire original embedded section 301 of the original column 3. The original vertical bars of the original steel pipe pile foundation steel cage 1 are then reconnected to the column 3. Next, the reinforcing steel cage 402 and connecting reinforcing bars 403 are installed. After erecting the formwork, concrete is poured, so that the reinforcing concrete part 401 covers the reinforcing steel cage 402, reinforcing bars 403, the original reclaimed section 101 of the steel cage, the original embedded section 301, and a portion of the original steel pipe pile foundation concrete retained part 2, forming a structurally stable integral structure. Finally, the soil is backfilled to the height of the ground level 5, with the lower end of the reinforcing part 4 located below the ground level 5. That is to say, the reinforcing part 4 includes the above-ground section and the underground section arranged adjacent to each other. While avoiding demolition and reconstruction, it can improve the bearing capacity and deformation resistance of the photovoltaic support steel pipe pile foundation, and also has advantages such as shortening the construction period, large material usage, saving money, not being restricted by regional climate, and strong versatility.

[0031] Specifically, the length of the underground section is L1, and the length of the above-ground section is L2, where L1 is less than L2. Preferably, L1:L2 = 0.5 to 0.6.

[0032] Specifically, the original embedded section 301 of the original column 3 is welded to the original vertical bar of the original steel pipe pile foundation steel cage 1 to form a weld joint.

[0033] Preferably, the welded joint is adjacent to the upper end of the original steel pipe pile foundation reinforcement cage 1.

[0034] The two ends of the reinforcing rib 403 can be connected to the annular stirrups 4021 of the reinforcing steel cage 402 by binding, but this has the disadvantage of weak connection strength. Preferably, both ends of the reinforcing rib 403 are welded to the annular stirrups 4021 of the reinforcing steel cage 402.

[0035] Preferably, the outer surface of the original steel pipe pile foundation concrete retention part 2, located within the reinforced concrete part 401, is provided with a roughened part.

[0036] Preferably, the annular stirrups 4021 and vertical bars 4022 of the reinforcing steel cage 402 are both threaded steel bars.

[0037] Preferably, the distance between the lower end of the reinforcing part 4 and the upper end of the original steel pipe pile foundation concrete retention part 2 is greater than 300mm.

[0038] The specific embodiments described are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. All equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A reinforced structure for a photovoltaic support steel pipe pile foundation, characterized in that: Including the original steel pipe pile foundation reinforcement cage (1), the original steel pipe pile foundation concrete retention part (2), the original column (3) and the reinforcement part (4); The original steel pipe pile foundation reinforcement cage (1) includes an original reinforcement cage reuse section (101) and an original reinforcement cage retention section (102) arranged adjacent to each other. The original steel pipe pile foundation concrete retention section (2) covers the original reinforcement cage retention section (102) and is located below the ground level (5). The original embedded section (301) of the original column (3) is coaxially arranged inside and connected to the original steel pipe pile foundation reinforcement cage (1). The original embedded section (301) of the original column (3) is arranged correspondingly to the original reinforcement cage reuse section (101). The lower end of the original column (3) is higher than the upper end of the original steel pipe pile foundation concrete retention part (2). The upper end of the reinforcing part (4) is higher than the upper end of the original steel pipe pile foundation reinforcement cage (1), and the lower end of the reinforcing part (4) is lower than the upper end of the original steel pipe pile foundation concrete retention part (2); the reinforcing part (4) includes a reinforced concrete part (401), and a reinforced steel cage (402) and a reinforcing bar (403) disposed within the reinforced concrete part (401). The original column (3), the original steel pipe pile foundation reinforcement cage (1), and the original steel pipe pile foundation concrete retention part (2) are all located inside the reinforcement cage (402); the upper end of the reinforcement cage (402) is arranged corresponding to the upper end of the original steel pipe pile foundation reinforcement cage (1), and the lower end of the reinforcement cage (402) is lower than the upper end of the original steel pipe pile foundation concrete retention part (2). The reinforcing rib (403) is horizontally positioned between the reinforcing steel cage (402) and the original steel cage reuse section (101), with both ends of the reinforcing rib (403) connected to the reinforcing steel cage (402); multiple reinforcing ribs (403) are provided, and the multiple reinforcing ribs (403) are crisscrossed to form a reinforcing rib frame unit; multiple sets of reinforcing rib frame units are provided, and the multiple sets of reinforcing rib frame units are arranged in pairs along the vertical direction.

2. The reinforced structure of the photovoltaic support steel pipe pile foundation as described in claim 1, characterized in that: The original embedded section (301) of the original column (3) is welded to the original vertical bar of the original steel pipe pile foundation steel cage (1) to form a weld joint.

3. The reinforced structure of the photovoltaic support steel pipe pile foundation as described in claim 2, characterized in that: The welded joint is adjacent to the upper end of the original steel pipe pile foundation reinforcement cage (1).

4. The reinforced structure of the photovoltaic support steel pipe pile foundation as described in claim 1, characterized in that: Both ends of the reinforcing bar (403) are welded to the annular stirrups (4021) of the reinforcing steel cage (402).

5. The reinforced structure of the photovoltaic support steel pipe pile foundation as described in claim 1, characterized in that: The original steel pipe pile foundation concrete retention part (2) is provided with a roughened part on the outer surface inside the reinforced concrete part (401).

6. The reinforced structure of the photovoltaic support steel pipe pile foundation as described in claim 1, characterized in that: The annular stirrups (4021) and vertical bars (4022) of the reinforcing cage (402) are both threaded steel bars.

7. The reinforced structure of the photovoltaic support steel pipe pile foundation as described in claim 1, characterized in that: The reinforcing part (4) includes an above-ground section and an underground section arranged adjacent to each other. The length of the underground section is L1, and the length of the above-ground section is L2. L1 is less than L2.

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