Construction Method of Photovoltaic Cast-in-place Pile

Abstract

A construction method for a photovoltaic cast-in-place pile, which relates to the technical field of pile foundation construction for photovoltaic power stations. The construction method for the photovoltaic cast-in-place pile includes: carrying out lofting according to the designed pile foundation points to determine the layout area of the photovoltaic pile foundation; determining sampling points according to the terrain in the first direction within the layout area of the photovoltaic pile foundation, collecting the three-dimensional coordinates of each sampling point, and generating the longitudinal section lines of each string of the photovoltaic pile foundation matrix; obtaining the pile top elevation of each string, and superimposing the pile top elevation with the longitudinal section lines of each string of the photovoltaic pile foundation matrix to obtain the site leveling elevation of each pile foundation; carrying out site leveling according to the site leveling elevation; constructing to generate cast-in-place piles; wherein, each string is arranged along the first direction. The construction method for the photovoltaic cast-in-place pile of the present disclosure is beneficial to reducing the project cost.

Description

Technical Field

[0001] The present disclosure relates to the technical field of pile foundation construction for photovoltaic power stations, and more specifically, to a construction method for photovoltaic cast-in-place piles. Background Art

[0002] With the rapid development of the global economy, the demand for energy continues to grow. Traditional fossil fuels such as coal, oil, and natural gas are facing increasingly serious problems such as resource shortages and environmental pollution. Against this background, solar energy, as a clean and renewable energy source, has received extensive attention. The photovoltaic industry has risen rapidly, and the concrete pouring technology for photovoltaic cast-in-place piles is one of the key technologies supporting the construction of photovoltaic power stations.

[0003] During the current construction process of photovoltaic cast-in-place piles, there is a serious problem of excessive concrete volume. After calculation, in some plots, the filling coefficient of the concrete cast-in-place piles reaches about 1.6, seriously exceeding the design requirements and increasing the construction cost of the project. Summary of the Invention

[0004] The present disclosure provides a construction method for photovoltaic cast-in-place piles, which can help reduce the project cost.

[0005] The construction method for photovoltaic cast-in-place piles includes:

[0006] According to the designed pile foundation points, conduct lofting to determine the layout area of the photovoltaic pile foundation;

[0007] Within the layout area of the photovoltaic pile foundation, determine sampling points according to the terrain in the first direction, collect the three-dimensional coordinates of each sampling point, and generate the longitudinal section lines of each string of the photovoltaic pile foundation matrix;

[0008] Obtain the pile top elevation of each string, and superimpose the pile top elevation with the longitudinal section lines of each string of the photovoltaic pile foundation matrix to obtain the site leveling elevation of each pile foundation;

[0009] Conduct site leveling according to the site leveling elevation;

[0010] Construct cast-in-place piles;

[0011] Wherein, each string is arranged along the first direction.

[0012] In an exemplary embodiment of the present disclosure, determining sampling points within the layout area of the photovoltaic pile foundation according to the terrain in the first direction and generating the longitudinal section lines of each string of the photovoltaic pile foundation matrix includes:

[0013] Within the layout area of the front column pile foundation points of each string, determine sampling points according to the terrain in the first direction and generate the longitudinal section line of the front column;

[0014] Within the layout area of the rear column pile foundation points of each string, determine sampling points according to the terrain in the first direction and generate the longitudinal section line of the rear column;

[0015] Overlay the pile top elevation with the longitudinal section lines of each string of the photovoltaic pile foundation matrix to obtain the site leveling elevation of each pile foundation, including:

[0016] Overlay the pile top elevation with the longitudinal section line of the front column and the longitudinal section line of the rear column to obtain the site leveling elevation of each pile foundation. The difference in the pile top height between the front column and the rear column within the same string is not greater than 10 mm.

[0017] In an exemplary embodiment of the present disclosure, determining sampling points according to the terrain in the first direction includes:

[0018] Set sampling points at the undulating positions of the terrain along the first direction;

[0019] Set sampling points at equal intervals in the uniformly sloped area along the first direction.

[0020] In an exemplary embodiment of the present disclosure, site leveling according to the site leveling elevation includes: overlaying the pile top elevation with the longitudinal section lines of each string of the photovoltaic pile foundation matrix, calculating the site leveling height difference of each pile foundation; excavating and replacing the local pile positions according to the site leveling height difference of each pile foundation.

[0021] In an exemplary embodiment of the present disclosure, obtaining the pile top elevation of each string includes: controlling the pile top elevation within the same string to be in the same plane.

[0022] In an exemplary embodiment of the present disclosure, obtaining the pile top elevation of each string includes: controlling the pile top height difference between adjacent supports of adjacent strings to be less than 200 mm.

[0023] In an exemplary embodiment of the present disclosure, the construction of cast-in-place piles includes:

[0024] Drilling and hole cleaning, positioning, marking and drilling the holes according to the designed pile foundation points and cleaning the holes;

[0025] Installation of steel reinforcement cage;

[0026] Installation of casing;

[0027] Concrete pouring;

[0028] Installation of embedded parts, and the embedded parts are U-shaped bolts;

[0029] Curing of concrete.

[0030] In an exemplary embodiment of the present disclosure, the process of drilling and hole cleaning includes: performing rotary drilling according to the site leveling elevation of each pile foundation to make the exposed heights of the pile bodies of the front columns and the rear columns in the same string equal; after drilling with a rotary drilling rig, perform manual hole cleaning.

[0031] In an exemplary embodiment of the present disclosure, during the concrete pouring process, the pile foundation is formed by one-time casting.

[0032] In an exemplary embodiment of the present disclosure, the distance between the installation position of the steel reinforcement cage and the casing is 3.2 cm to 3.5 cm.

[0033] The construction method of the photovoltaic cast-in-place pile of the present disclosure utilizes field collection of original landform data to generate the longitudinal section line of the terrain, which can provide data basis for subsequent site leveling operations. By superimposing the longitudinal section lines of each string representing the original landform with the designed site leveling elevation line and then performing site leveling, it has scientific basis, can improve the accuracy of site leveling, can not only ensure that the pile top elevation after pile formation meets the design requirements, but also ensure that the pile body length meets the design requirements, neither too long nor too short. The construction method of the photovoltaic cast-in-place pile of the present disclosure can, while ensuring that the photovoltaic cast-in-place pile meets the bearing requirements, make the construction of the photovoltaic cast-in-place pile conform to the characteristics of the original landform of the site and follow the slope, reduce the waste of concrete, and reduce the construction cost.

[0034] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments in line with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0036] Figure 1 It is a flowchart of an exemplary embodiment of the construction method of the photovoltaic cast-in-place pile of the present disclosure.

[0037] Figure 2 It is an overlay diagram of the pile top elevation and the longitudinal section lines of each string of the photovoltaic pile foundation square matrix in an exemplary embodiment of the construction method of the photovoltaic cast-in-place pile of the present disclosure.

[0038] Figure 3 It is a flowchart of constructing and generating a cast-in-place pile in an exemplary embodiment of the construction method of the photovoltaic cast-in-place pile of the present disclosure. DETAILED DESCRIPTION

[0039] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote like or similar structures, and thus their detailed description will be omitted. Further, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0040] Unless otherwise specified or stated, the technical terms or scientific terms used in this disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which this disclosure pertains. The terms "a", "an", "the", "said" and "at least one" are used to denote the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc. Terms such as "connected" and "fixed" should be understood in a broad sense. For example, without special explanation, "connected" can be a fixed connection, a movably connected connection, an integrally connected connection, a detachable connection, can be directly connected, or can be indirectly connected through an intermediate medium. This disclosure takes the groups of strings arranged in the east-west direction and the first direction being the east-west direction as an example for illustration. Those skilled in the art can understand that for the scenario where the photovoltaic support is arranged in other directions, the first direction can also refer to other directions, and the construction method provided by this disclosure is not limited by the specific direction.

[0041] This disclosure provides a construction method for photovoltaic cast-in-place piles, referring to Figure 1 as shown, which includes steps S100 to S500.

[0042] Step S100: According to the designed pile foundation points, conduct lofting to determine the layout area of the photovoltaic pile foundation;

[0043] Step S200: Determine sampling points according to the terrain in the first direction within the layout area of the photovoltaic pile foundation, collect the three-dimensional coordinates of each sampling point, and generate the longitudinal section lines of each group of strings of the photovoltaic pile foundation square matrix;

[0044] Step S300: Obtain the pile top elevation of each group of strings, and superimpose the pile top elevation on the longitudinal section lines of each group of strings of the photovoltaic pile foundation square matrix to obtain the site leveling elevation of each pile foundation;

[0045] Step S400: Conduct site leveling according to the site leveling elevation;

[0046] Step S500: Construct to generate cast-in-place piles;

[0047] Wherein, each group of strings is arranged in the first direction.

[0048] In step S100, for each string, one or more control points can be released. Through the existing control points, the parameter calculation of the control points and the calibration of the instrument are carried out. Only after the calibration is correct can the lofting work of the pile foundation points be carried out, and the measuring instrument used must be an instrument calibrated by an authoritative calibration unit.

[0049] The computer-aided design vectorization can be carried out according to the plane layout diagram of the plot sub-array provided by the design unit. After the position is verified correctly in the indoor work, the outdoor on-site lofting can be carried out.

[0050] In step S200, during the outdoor lofting of the pile foundation points of the sub-array, the sampling points can be determined according to the terrain in the first direction, the three-dimensional coordinates of each sampling point are collected, and the longitudinal section lines of each string of the photovoltaic pile foundation array are generated. Among them, each string is arranged along the first direction. For example, taking the case where each string of a certain plot is arranged in the west-to-east direction as an example, when carrying out the outdoor lofting of the pile foundation points of the sub-array, the sampling points can be determined according to the terrain in the west-to-east direction, the three-dimensional coordinates of the X, Y, and H of the point positions are collected, and the longitudinal section line from west to east of each sub-array is generated through geographic mapping software such as CASS software.

[0051] In step S300, the pile top elevation between the strings can be designed according to the design requirements of the pile top elevation of each string. After obtaining the pile top elevation, it is superimposed on the longitudinal section line from west to east obtained in step S200, and the elevation of each pile foundation site leveling can be calculated.

[0052] In step S400, the site leveling is carried out according to the calculated site leveling elevation; in step S500, the cast-in-place pile is constructed. The construction of the photovoltaic cast-in-place pile is realized.

[0053] It can be seen that the construction method of the photovoltaic cast-in-place pile of the present disclosure utilizes the outdoor collection of the original landform data to generate the longitudinal section line of the terrain, which can provide a data basis for the subsequent site leveling operation. By superimposing the longitudinal section lines of each string representing the original landform on the designed site leveling elevation line and then carrying out the site leveling, it has scientific basis, can improve the accuracy of the site leveling, can not only ensure that the pile top elevation after pile formation meets the design requirements, but also ensure that the pile body length meets the design requirements, and will not be too long or too short. The construction method of the photovoltaic cast-in-place pile of the present disclosure can, while ensuring that the photovoltaic cast-in-place pile meets the bearing requirements, enable the construction of the photovoltaic cast-in-place pile to conform to the characteristics of the original landform of the site and follow the slope, reduce the waste amount of concrete, and reduce the construction cost.

[0054] Specifically, in step S100, considering the characteristics of a large number of component support bases, dense layout, and difficult positioning, when lofting the pile foundation points, four control points can be released for each string, with two control points for the front column and two for the rear column respectively. Use a steel tape to lay out the lines, and use a hanging string to control the longitudinal and transverse axes of each component support base, and use a level to control the elevation of each component support base. When conducting on-site photovoltaic pile foundation point lofting, steel nails and red cloth strips can be used for marking.

[0055] In step S200, in an exemplary embodiment, it may include:

[0056] Determine sampling points according to the terrain in the layout area of the front column pile foundation points of each string, and generate the longitudinal section line of the front column;

[0057] Determine sampling points according to the terrain in the layout area of the rear column pile foundation points of each string, and generate the longitudinal section line of the rear column.

[0058] When superimposing the pile top elevation with the longitudinal section lines of each string of the photovoltaic pile foundation square array in step S300, the pile top elevation, the longitudinal section line of the front column, and the longitudinal section line of the rear column can be superimposed to obtain the site leveling elevation of each pile foundation. Exemplarily, the pile top heights of the front columns within the same string may be equal to those of the rear columns, or the difference between the pile top heights of the front columns and the rear columns within the same string is not greater than 10 mm. Refer to Figure 2 , the L1 line shows a schematic diagram of the longitudinal section line of a front column, and the L2 line shows the designed height of the pile top elevation following the slope. For ease of observation, Figure 2 the longitudinal section line of the rear column is not shown. In the exemplary embodiment of the present disclosure, the longitudinal section line of the rear column can also be superimposed with the longitudinal section line L1 of the front column and the pile top elevation line L2 to obtain the site leveling elevation of each pile foundation.

[0059] Determine sampling points according to the terrain. Specifically, sampling points can be set at the undulating positions of the terrain. For example, sampling points can be set at the lowest point of the low-lying terrain, the highest point of the raised terrain, etc., or at the positions where the slope inclination changes. Reference can be made to Figure 2 the sampling point A shown in. For areas with uniform slopes, sampling points can be set at equal intervals. For example, for areas with gentle slopes, such as areas with slopes between 2% and 10%, the interval between sampling points can be set larger; for areas with steep slopes, the interval between sampling points can be set smaller. Reference can be made to Figure 2 the sampling point B shown in. This exemplary embodiment can make the generated longitudinal section line more accurately reflect the topographic features and provide more accurate data support for subsequent site leveling operations.

[0060] In step S300, obtain the pile top elevations of each group of strings. This may include controlling the pile top elevations within the same group of strings to be in the same plane. Specifically, when determining the pile top elevations, the influence of the terrain slope should be considered and the principle of "adapting to the terrain" should be followed. For the construction of the pile foundation top elevations of photovoltaic supports, within the same group of strings, the pile top elevations of fixed supports should be in the same plane. The pile top elevations being in the same plane as described in this disclosure means that the pile top elevations are coplanar, including both the pile top elevations being in the same horizontal plane and the pile top elevations being in an inclined plane.

[0061] Exemplarily, for the construction of the pile foundation top elevations of photovoltaic supports, it is also possible to control the pile top height difference between adjacent supports of adjacent groups of strings to be less than 200 mm. For example, for two adjacent groups of strings in the east-west direction, the difference between the pile top elevation at the east edge of the string located on the west side and the pile top elevation at the west edge of the string located on the east side is less than 200 mm.

[0062] Exemplarily, during staking out, the position deviation of the pile foundation does not exceed 30 mm, and the pile top height deviation does not exceed 10 mm.

[0063] In step S400, perform site leveling according to the site leveling elevation, including: superimposing the pile top elevation on the longitudinal section lines of each group of strings of the photovoltaic pile foundation square array, calculating the site leveling height difference of each pile foundation; performing excavation and replacement filling of local pile positions according to the site leveling height difference of each pile foundation. After designing the pile top elevations between groups of strings and superimposing them on the longitudinal section lines of each group of strings of the photovoltaic pile foundation square array, such as the longitudinal section line of the front columns from west to east and the longitudinal section line of the rear columns from west to east, the site leveling height difference of each pile foundation can be calculated. Performing local site leveling according to the site leveling height difference is especially applicable to project areas with severely irregular undulating terrain. Moreover, calculating local site leveling based on the elevation adapting to the terrain and the original terrain data superposition has scientific basis, which is beneficial to ensuring that in subsequent construction operations, the pile top elevations of each group of strings can be designed according to the elevation adapting to the terrain as required, ensuring that the pile body length is not too long, which is beneficial to reducing the waste of concrete and reducing construction costs. In particular, the bearing capacity of the foundation after replacement filling should meet the design requirements.

[0064] Step S500, construct cast-in-place piles, referring to Figure 3 as shown, may include steps S510 to S560:

[0065] Step S510: Drill and clean the hole, position and mark the hole according to the designed pile foundation points and clean the hole;

[0066] Step S520: Install the steel reinforcement cage;

[0067] Step S530: Install the casing;

[0068] Step S540: Pour concrete;

[0069] Step S550: Install the embedded parts, where the embedded parts are U-bolts;

[0070] Step S560: Cure the concrete.

[0071] Specifically, in step S510, the drilling and hole cleaning process includes: performing rotary drilling according to the site leveling elevation of each pile foundation so that the exposed heights of the front column pile bodies and the rear column pile bodies in the same string are equal. For example, the exposed heights of the front column pile bodies and the rear column pile bodies in the same string are both 30 cm to 50 cm. The drilling commander needs to measure each pile hole to ensure that it meets the design requirements and the hole body does not exceed the standard.

[0072] During drilling, align the center of the drill bit with the hole center, and use a plumb bob or a spirit level to control the verticality of the drill rig from different angles respectively. After the drill rig is corrected to be vertical, start drilling. During the drilling process, strictly control its verticality and depth. If hole deviation or off-hole is found, correct it in time. When the drill rig drills, the sandy soil drilled out should be kept away from the hole edge to avoid the surrounding sandy soil collapsing into the hole due to vibration after the drill pipe is lifted, resulting in insufficient hole depth.

[0073] In an exemplary embodiment of the present disclosure, after drilling with a rotary drilling rig, manual hole cleaning is performed. Specifically, if water drilling is used, it may cause the hole wall to increase and the concrete quantity to exceed the standard. Especially for a gobi desert photovoltaic power station, the site is mainly composed of pebbles. Using water drilling to form a hole may cause the hole to be irregular in shape, resulting in the concrete quantity exceeding the standard. The exemplary embodiment of the present disclosure uses manual hole cleaning after drilling with a rotary drilling rig, which is beneficial to effectively control the hole depth and diameter of the pile foundation to meet the design requirements.

[0074] In an exemplary embodiment of the present disclosure, on the premise of ensuring that the pile foundation is exposed 30 cm to 50 cm, according to the design requirement of following the slope and the calculated site leveling elevation difference, the drilling personnel need to use a tape measure to measure the depth of each drill hole to ensure that the exposed elevation of the pile foundation is on the same horizontal plane or the same inclined plane.

[0075] In some exemplary embodiments, the drill bit size can be adjusted at any time according to the actual geological conditions on site to ensure that the hole diameter ≥ 250 mm.

[0076] Before placing the steel cage in step S520, it may include fabricating the steel cage. The steel bar fabrication includes checking the specifications, models and the factory qualified certificates of the steel bars, performing physical and mechanical property tests on the material of the steel bars, and only after passing the tests can they be used for construction. Then, check the processing and fabrication quality of the steel bars according to the design and construction specifications.

[0077] When installing the steel reinforcement cage, it can only be used after passing the acceptance of the supervisor. Exemplarily, the steel reinforcement cage can be transported to the site by a small engineering vehicle, and the steel reinforcement cage can be ensured not to be damaged or deformed during the transportation process. In an exemplary embodiment of the present disclosure, the steel reinforcement cage should be inspected twice during installation. If the steel reinforcement cage is found to be deformed, on-site adjustment should be carried out. Exemplarily, the distance between the installation position of the steel reinforcement cage and the casing is 3.2 cm to 3.5 cm. For example, the installation position of the steel reinforcement cage is 3.5 cm away from the retaining wall casing. If the phenomenon of deviation in the installation position of the steel reinforcement cage is found during the pouring process, manual adjustment should be carried out in a timely manner during the pouring process.

[0078] In step S530, after the steel reinforcement cage is placed qualifiedly, the casing is installed.

[0079] In step S540, during the concrete pouring process, a construction process of pouring while vibrating can be adopted. The vibration should be fast inserted and slow pulled as required. The vibrating rod should be quickly straightened to the bottom of the pile foundation and then slowly pulled up. There is no allowance for missed vibration or over-vibration, so as not to reduce the concrete strength and affect the overall quality of the concrete. In an exemplary embodiment of the present disclosure, during the concrete pouring process, the pile foundation is formed by one-time pouring, and secondary pouring is prohibited to avoid forming construction joints.

[0080] In step S550, the embedded parts are installed. The embedded parts can be processed according to the requirements of the design drawings for cutting, or customized finished products. After a single concrete pouring is completed, the U-shaped bolt embedded parts are started to be embedded. Exemplarily, while inspecting the center distance of the string embedded parts each time, the diagonal inspection method is added. After the embedded parts of the component support foundation are installed, the concrete on the upper part of the embedded parts should be removed immediately.

[0081] In step S560, after the concrete pouring of the component support cast-in-place pile is completed, curing starts after 6 to 18 hours, and in high-temperature seasons, it can be advanced by 1 to 2 hours according to the setting degree of the concrete. To avoid direct sunlight exposure, the surface of the concrete is covered with plastic film for curing to keep the surface of the concrete constantly moist. The curing time is not less than 28 days.

[0082] Those skilled in the art will readily think of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include the common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

Claims

1. A construction method for photovoltaic cast-in-place piles, characterized in that: include: According to the designed pile foundation points, carry out layout and determine the layout area of ​​the photovoltaic pile foundation; Determine sampling points in the photovoltaic pile foundation arrangement area according to the terrain in the first direction, collect the three-dimensional coordinates of each sampling point, and generate the longitudinal section line of each group string of the photovoltaic pile foundation array; Obtain the pile top elevation of each group of strings, and superimpose the pile top elevation with the longitudinal section line of each group of strings of the photovoltaic pile foundation array to obtain the field level elevation of each pile foundation; Performing site leveling according to the site leveling elevation; The construction generates cast-in-place piles; Wherein, each group of strings is arranged along the first direction; and the field is leveled according to the field leveling elevation, including: superimposing the pile top elevation with the longitudinal section line of each group of strings of the photovoltaic pile foundation array, and calculating the field leveling height difference of each pile foundation; and excavating and replacing the local pile position according to the field leveling height difference of each pile foundation; Determining sampling points in the arrangement area of ​​the photovoltaic pile foundation according to the terrain in the first direction, and generating longitudinal section lines of each group of strings of the photovoltaic pile foundation array, including: In the area where the front column pile foundation points of each group of strings are arranged, sampling points are determined according to the terrain in the first direction, and a longitudinal section line of the front column is generated; In the area where the pile foundation points of the rear columns of each string are arranged, sampling points are determined according to the terrain in the first direction, and a longitudinal section line of the rear columns is generated; The pile top elevation is superimposed with the longitudinal section lines of each string of the photovoltaic pile foundation array to obtain the field level elevation of each pile foundation, including: The pile top elevation is superimposed with the longitudinal section lines of the front column and the rear column to obtain the field elevation of each pile foundation. The difference between the pile top height of the front column and the pile top height of the rear column in the same string is not greater than 10 mm.

2. The construction method of photovoltaic cast-in-place pile according to claim 1, characterized in that: Determining sampling points according to the terrain in the first direction includes: Setting the sampling points at the undulating positions along the first direction; The sampling points are arranged at equal intervals in a region with a uniform slope along the first direction.

3. The construction method of photovoltaic cast-in-place pile according to claim 1, characterized in that: Obtain the pile top elevation of each string group, including: controlling the pile top elevations in the same string group to be in the same plane.

4. The construction method of photovoltaic cast-in-place pile according to claim 1, characterized in that: Obtaining the pile top elevation of each string group includes: controlling the pile top height difference of adjacent brackets between adjacent strings to be less than 200 mm.

5. The construction method of photovoltaic cast-in-place pile according to claim 1, characterized in that: The construction of the cast-in-place piles includes: Drilling and cleaning holes: positioning and marking the designed pile foundation points, drilling and cleaning holes; Steel cage installation; Install the casing; Concrete pouring; Install embedded parts, wherein the embedded parts are U-shaped bolts; Curing of concrete.

6. The construction method of photovoltaic cast-in-place pile according to claim 5, characterized in that: The drilling and hole cleaning process includes: performing rotary drilling according to the site level elevation of each pile foundation to make the exposed height of the front column pile body and the rear column pile body of the same group of strings equal; after drilling with a rotary drilling machine, manually cleaning the hole.

7. The construction method of photovoltaic cast-in-place pile according to claim 5, characterized in that: During the concrete pouring process, the pile foundation is formed by pouring in one time.

8. The construction method of photovoltaic cast-in-place pile according to claim 5, characterized in that: The distance between the installation position of the steel cage and the sleeve is 3.2 cm to 3.5 cm.

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