Support pile with prefabricated reinforced concrete composite structure

Abstract

The utility model relates to a prefabricated reinforced concrete composite structure support pile which comprises a concrete row pile and a plurality of prefabricated piles, wherein the concrete row pile is composed of a plurality of concrete mixing piles, and the plurality of prefabricated piles enable the plurality of concrete mixing piles to form a whole. At least two sets of concrete row piles are arranged, the multiple sets of concrete row piles are arranged on the peripheral side of the foundation pit in parallel, precast piles are arranged in the arrangement direction of the concrete row piles, and each precast pile is inserted into the multiple sets of adjacent concrete row piles. The precast piles comprise precast reinforced concrete I-shaped piles and a plurality of precast reinforced concrete V-shaped piles. The I-shaped piles are at least located in the two rows of concrete mixing piles. And a V-shaped pile is arranged in every two adjacent I-shaped piles. The precast piles are arranged in the concrete row piles in rows to enable the concrete mixing piles to form a whole, the stress area is increased, the strength and stability of pile bodies can be improved, and therefore the overall shear strength of the supporting pile is improved, and the performance of the supporting pile is fully exerted.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support, in particular to a precast reinforced concrete composite structure support pile. Background Technique

[0002] The foundation pit row pile support is applicable to various soil conditions and complex environments. Especially in the urban central area, slope excavation is not allowed, and the influence on surrounding buildings and facilities can be reduced. It mainly uses circular cast-in-place piles for support, and the lateral pressures in all directions are the same. However, the foundation pit earth pressure is unidirectional and along the inner side direction of the horizontal foundation pit, so that the performance of the circular reinforced concrete cast-in-place row piles cannot be fully exerted, resulting in poor shear strength of the support piles.

[0003] Therefore, it is necessary to provide a precast reinforced concrete composite structure support pile to solve the above problems. Content of the Utility Model

[0004] The utility model relates to a precast reinforced concrete composite structure support pile. By arranging a plurality of precast piles in a row of concrete row piles, a plurality of concrete mixing piles are formed into a whole. The I-shaped pile and the V-shaped pile can increase the stress area. Moreover, the I-shaped pile and the V-shaped pile can also increase the strength and stability of the pile body, thereby improving the overall shear strength of the support pile, and the performance of the support pile is fully exerted, solving the problem that the circular reinforced concrete cast-in-place row piles in the prior art need to bear the foundation pit earth pressure, resulting in poor shear strength.

[0005] To solve the above problems, the content of the utility model is: a precast reinforced concrete composite structure support pile, which includes a concrete row pile composed of a plurality of concrete mixing piles and a plurality of precast piles for forming the plurality of concrete mixing piles into a whole; at least two groups of the concrete row piles are provided, and the multiple groups of the concrete row piles are arranged in parallel on the outer peripheral side of the foundation pit. The precast piles are arranged along the layout direction of the concrete row piles, and each precast pile is inserted into multiple adjacent concrete row piles; the precast piles include precast reinforced concrete I-shaped piles and a plurality of precast reinforced concrete V-shaped piles; the I-shaped piles are at least located in two rows of the concrete mixing piles; one V-shaped pile is arranged in each of two adjacent I-shaped piles.

[0006] Furthermore, the central axis of each I-shaped pile is arranged parallel to the central axes of the multiple concrete mixing piles arranged in parallel, which is convenient for installing the I-shaped pile, improves the construction efficiency, and can also improve the anti-bending performance.

[0007] Furthermore, the width of the I-shaped pile along the layout direction of the concrete row piles is smaller than the diameter of the concrete mixing piles, and the thickness of the I-shaped pile along the direction perpendicular to the layout direction of the concrete row piles is less than three times the radius of the concrete mixing piles, which can save costs, ensure that the steel bars are completely wrapped by the concrete, and extend the service life and shear strength of the I-shaped pile.

[0008] Furthermore, two groups of the concrete mixing piles are arranged at intervals between two adjacent I-shaped piles, which can save costs.

[0009] Furthermore, the I-shaped pile includes multiple first main steel bars and multiple first stirrups. The multiple first main steel bars are arranged at vertical intervals to enclose the shape of the I-shaped pile. The multiple first stirrups are arranged at intervals along the length direction of the multiple first main steel bars, and each first stirrup is fixedly connected to the outer sides of the multiple first main steel bars at the same horizontal plane to form an I-shaped steel cage with an I-shaped cross-section. The I-shaped steel cage is buried in the concrete row piles and integrally solidifies with the corresponding multiple concrete mixing piles. The I-shaped steel cage can be prefabricated in a factory, avoiding the time and process of on-site pouring, with a simple structure and fast construction speed, which can greatly shorten the construction period.

[0010] Furthermore, the opening side of the V-shaped pile faces the foundation pit, increasing the force-bearing area and dispersing the shear resistance.

[0011] Furthermore, the thickness of the V-shaped pile along the direction perpendicular to the layout direction of the concrete row piles is smaller than the thickness of the I-shaped pile along the direction perpendicular to the layout direction of the concrete row piles, which can save costs, facilitate the installation of the V-shaped pile, and can also increase the installation density and improve the bearing strength.

[0012] Furthermore, both sides of the opening side of the V-shaped pile are connected to the inner side surfaces of the corresponding I-shaped piles, directly dispersing the horizontal extrusion force to the I-shaped piles. The I-shaped piles have higher strength, which is beneficial to protecting the concrete mixing piles.

[0013] Furthermore, the V-shaped pile includes multiple second main steel bars and multiple second stirrups. The multiple second main steel bars are arranged at vertical intervals to enclose a V-shaped structure, and the multiple second stirrups are arranged at intervals along the length direction of the second main steel bars. Each second stirrup is fixedly connected to the outer side surfaces of the multiple second main steel bars at the same horizontal plane to form a V-shaped steel cage with a V-shaped cross-section. The V-shaped steel cage is buried between two adjacent I-shaped piles and integrally solidifies with the two adjacent I-shaped piles and the corresponding multiple concrete mixing piles. The V-shaped steel cage can be prefabricated in a factory, avoiding the time and process of on-site pouring, with a simple structure and fast construction speed, which can greatly shorten the construction period.

[0014] Furthermore, the embedded depth of the precast pile in the longitudinal direction is the same as that of the cement mixing pile, and both are greater than the excavation depth of the foundation pit, so as to increase the depth of the support and the safety performance.

[0015] Due to the adoption of the above-mentioned precast reinforced concrete combined structure retaining pile, compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model relates to a precast reinforced concrete combined structure retaining pile, which includes a concrete row pile composed of a plurality of cement mixing piles and a plurality of precast piles for forming an integral body of the plurality of cement mixing piles. At least two groups of concrete row piles are provided, and the multiple groups of concrete row piles are arranged in parallel on the outer peripheral side of the foundation pit. Precast piles are arranged along the layout direction of the concrete row piles, and each precast pile is inserted into multiple groups of adjacent concrete row piles. The precast pile includes an I-shaped pile of precast reinforced concrete and a plurality of V-shaped piles of precast reinforced concrete. The I-shaped piles are all located in at least two rows of cement mixing piles. A V-shaped pile is arranged in each of the adjacent two I-shaped piles. By arranging a plurality of precast piles in the row of concrete row piles to form an integral body of the plurality of cement mixing piles, the strength and stability of the pile body can be increased, thereby improving the overall shear strength of the retaining pile, and the performance of the retaining pile can be fully exerted. The V-shaped pile can convert the shear force into a part of the extrusion force along the length direction of the foundation pit, thereby reducing the shear force exerted by the soil mass, so as to improve the shear strength and safety performance, and can also increase the stress area, solving the problem that the circular reinforced concrete cast-in-place row pile in the prior art needs to bear the earth pressure of the foundation pit, resulting in poor shear strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following briefly introduces the drawings required to be used in the embodiments. The drawings in the following description are only the corresponding drawings of some embodiments of the present utility model.

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the precast reinforced concrete combined structure retaining pile of the present utility model.

[0018] Figure 2 For Figure 1 the sectional structural diagram of A-A in

[0019] Figure 3 It is a schematic structural diagram of an embodiment of the I-shaped steel cage of the precast reinforced concrete combined structure retaining pile of the present utility model.

[0020] Figure 4 It is a schematic structural diagram of an embodiment of the V-shaped steel cage of the precast reinforced concrete combined structure retaining pile of the present utility model.

[0021] In the figure: 1. Prefabricated reinforced concrete composite structure retaining pile; 2. Concrete mixing pile; 3. Prefabricated pile; 31. I-shaped pile; 311. I-shaped steel cage; 3111. First main reinforcement; 3112. First stirrup; 32. V-shaped pile; 321. V-shaped steel cage; 3211. Second main reinforcement; 3212. Second stirrup; 4. Foundation pit; 5. Soil mass; 6. Connecting beam. Specific embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] The directional terms mentioned in the present invention, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", "top" and "bottom", etc., are only references to the orientation of the accompanying drawings. The directional terms used are for explaining and understanding the present invention, rather than for limiting the present invention.

[0024] In the figure, units with similar structures are denoted by the same reference numerals.

[0025] Please refer to Figure 1 、 Figure 2 , in this embodiment, the prefabricated reinforced concrete composite structure retaining pile 1 includes a concrete row pile composed of a plurality of concrete mixing piles 2 and a plurality of prefabricated piles 3 for making the plurality of concrete mixing piles 2 form an integral body. At least two groups of concrete row piles are provided, and the multiple groups of concrete row piles are arranged in parallel on the outer peripheral side of the foundation pit 4. Prefabricated piles 3 are arranged along the layout direction of the concrete row piles, and each prefabricated pile 3 is inserted into multiple adjacent groups of concrete row piles.

[0026] Specifically, a plurality of prefabricated piles 3 are arranged in parallel and at intervals in the concrete row pile, so the central axis of the prefabricated pile 3 is perpendicular to the length direction of the concrete row pile. One side of the prefabricated pile 3 is located in the concrete row pile near the foundation pit 4, and the other side of the prefabricated pile 3 is located in the outermost concrete row pile. The prefabricated pile 3 forms an integral body of multiple rows of concrete row piles, and moreover, the support surface of the prefabricated pile 3 is arranged on the side exceeding the soil mass, which can improve the overall firmness of the plurality of concrete mixing piles 2.

[0027] In this embodiment, please refer to Figure 1 、 Figure 3, the precast pile 3 includes an I-shaped pile 31 made of precast reinforced concrete and several V-shaped piles 32 made of precast reinforced concrete. The I-shaped piles 31 are each located in at least two rows of concrete mixing piles 2. A V-shaped pile 32 is provided between every two adjacent I-shaped piles 31. The V-shaped pile 32 can convert the shear resistance into a part of the extrusion force along the length direction of the foundation pit 4, thereby reducing the shear resistance exerted by the soil mass, improving the shear strength and safety performance, and also increasing the bearing area.

[0028] The central axis of each I-shaped pile 31 is parallel to the central axes of multiple concrete mixing piles 2 arranged side by side, which is convenient for installing the I-shaped pile, improving the construction efficiency, and also enhancing the anti-bending performance.

[0029] Among them, the cross-section of the I-shaped pile 31 is set as an I-shaped structure. Specifically, both sides of the I-shaped pile 31 are set as strip structures, and their length directions are consistent with the length direction of the concrete row piles. The connecting sections connecting both sides of the I-shaped pile 31 are also set as strip structures, and their length directions are arranged crosswise with the length directions of both sides. In this embodiment, preferably, the length direction of the connecting section is perpendicular to the length directions of both sides, which can improve the overall bearing strength.

[0030] The width of the I-shaped pile 31 along the layout direction of the concrete row piles is less than the diameter of the concrete mixing pile 2, and the thickness of the I-shaped pile 31 along the direction perpendicular to the layout direction of the concrete row piles is less than three times the radius of the concrete mixing pile 2, which saves costs, ensures that the steel bars are completely wrapped by the concrete, and prolongs the service life and shear strength of the I-shaped pile 31.

[0031] Preferably, two groups of concrete mixing piles 2 are arranged at intervals between every two adjacent I-shaped piles 31, which can save costs. One V-shaped pile 32 is filled in these two groups of concrete mixing piles 2.

[0032] The I-shaped pile 31 includes multiple first main reinforcement bars 3111 and multiple first stirrup bars 3112. The multiple first main reinforcement bars 3111 are arranged at vertical intervals to enclose the shape of the I-shaped pile 31. The multiple first stirrup bars 3112 are arranged at intervals along the length direction of the multiple first main reinforcement bars 3111, and each first stirrup bar 3112 is fixedly connected to the outer sides of the multiple first main reinforcement bars 3111 at the same horizontal plane to form an I-shaped steel cage 311 with an I-shaped cross-section. The I-shaped steel cage 311 is buried in the concrete row piles and integrally solidifies with the corresponding multiple concrete mixing piles 2. The I-shaped steel cage 311 can be prefabricated in a factory, and then the prefabricated I-shaped steel cage 311 is lowered into the corresponding concrete mixing pile 2 and integrally solidifies with the concrete therein, avoiding the time and process of on-site pouring, with a simple structure and fast construction speed, which can greatly shorten the construction period. Among them, the I-shaped pile 31 includes the I-shaped steel cage 311 and the concrete filled therein, and the concrete protective layer on the outer peripheral side of the I-shaped steel cage 311.

[0033] In this embodiment, please refer to Figure 1 and Figure 4 . In order to avoid excessive pressure, measures can also be taken to disperse the shear resistance of the soil mass, so as to reduce the shear resistance on the retaining pile, thereby improving the safety of the excavation of the foundation pit 4. Specifically, the cross-section of the V-shaped pile 32 is set as a V-shaped structure. A V-shaped pile 32 is arranged in each of two adjacent H-shaped piles 31, and the shear resistance can be converted into a part of the extrusion force along the length direction of the foundation pit 4, thereby reducing the shear resistance exerted by the soil mass, and thus the shear strength and safety performance can be improved.

[0034] The opening side of the V-shaped pile 32 faces the foundation pit 4, increasing the stress area and dispersing the shear resistance.

[0035] The thickness of the V-shaped pile 32 along the direction perpendicular to the layout direction of the concrete row piles is smaller than the thickness of the H-shaped pile 31 along the direction perpendicular to the layout direction of the concrete row piles, saving costs, facilitating the installation of the V-shaped pile 32, and also increasing the installation density and improving the bearing strength.

[0036] Both sides of the opening side of the V-shaped pile 32 are connected to the inner side surfaces of the corresponding H-shaped piles 31, directly dispersing the horizontal extrusion force to the H-shaped piles 31. The H-shaped piles 31 have higher strength, which is beneficial to protecting the concrete mixing piles 2.

[0037] The V-shaped pile 32 includes a plurality of second main reinforcement bars 3211 and a plurality of second stirrups 3212. The plurality of second main reinforcement bars 3211 are arranged at intervals vertically to enclose a V-shaped structure, and the plurality of second stirrups 3212 are arranged at intervals along the length direction of the second main reinforcement bars 3211. Each second stirrup 3212 is fixedly connected to the outer side surfaces of the plurality of second main reinforcement bars 3211 at the same horizontal plane to form a V-shaped steel reinforcement cage 321. The V-shaped steel reinforcement cage 321 is buried between two adjacent H-shaped piles 31 and integrally solidifies with the two adjacent H-shaped piles 31 and the corresponding plurality of concrete mixing piles 2. The V-shaped steel reinforcement cage 321 can be prefabricated in a factory, avoiding the time and process of on-site pouring, having a simple structure and a fast construction speed, and can greatly shorten the construction period. Among them, the V-shaped pile 32 includes the V-shaped steel reinforcement cage 321 and the concrete filled therein, and the concrete protective layer on the outer peripheral side of the V-shaped steel reinforcement cage 321.

[0038] The embedment depth of the precast pile 3 in the longitudinal direction is set the same as that of the concrete mixing pile 2, and both are greater than the excavation depth of the foundation pit 4, improving the depth of the support and the safety performance. Specifically, the depths of the H-shaped pile 31 and the V-shaped pile 32 are both greater than the excavation depth of the foundation pit 4.

[0039] Prefabricated reinforced concrete I-shaped piles 31 and V-shaped piles 32 are industrially produced, ensuring the strength and stability of the pile body and reliable quality. Both the prefabricated reinforced concrete I-shaped piles 31 and V-shaped piles 32 are prefabricated in factories, avoiding the time and process of on-site casting. They have simple structures and fast construction speeds, significantly shortening the construction period. Compared with the traditional combination of reinforced concrete row piles and concrete mixing pile water-stop curtains, the combination of single prefabricated reinforced concrete I-shaped piles 31 and concrete mixing piles 2 has a lower cost and is economically saving. The on-site construction has low noise and little impact on the surrounding environment. It can not only support and retain soil but also act as a water-stop curtain, achieving the effect of combining the functions of water-stop and retaining walls and reducing mud discharge.

[0040] Moreover, the I-shaped steel cage 311 and V-shaped steel cage 321 are inserted into the concrete mixing pile 2 to form an integral body, which not only plays the role of the water-stop curtain of the concrete mixing pile 2 but also utilizes the superior flexural mechanical properties of the prefabricated reinforced concrete I-shaped pile 31 and V-shaped pile 32 to achieve complementary advantages.

[0041] The following elaborates in detail on the specific construction plan of the prefabricated reinforced concrete composite structure retaining pile 1.

[0042] Use a three-axis mixer to stir and grout the soil in the foundation pit 4 to the designed predetermined depth. After completion, move to the next position to continue the concrete pile mixing. Before the initial setting of the concrete mixing pile 2, use a precast pile driving machine to insert the prefabricated I-shaped steel cage 311 and V-shaped steel cage 321 into the designed predetermined position of the concrete mixing pile 2. The concrete mixing pile 2 and the I-shaped pile 31 and V-shaped pile 32 solidify to form an integral body. This can give full play to the role of the water-stop curtain of the concrete mixing pile 2 and the mechanical properties of the I-shaped pile 31 and V-shaped pile 32, achieve complementary advantages, and increase the flexural and shear strength of the soil.

[0043] 1) Production and arrival of the prefabricated I-shaped steel cage 311 and V-shaped steel cage 321: The factory determines the length and dimensions of the prefabricated I-shaped steel cage 311 and V-shaped steel cage 321 according to the design drawings for production, and transports the completed I-shaped steel cage 311 and V-shaped steel cage 321 to the construction site;

[0044] 2) Site leveling: Conduct site leveling before the construction of the concrete mixing pile 2, and remove hard objects on the surface within the construction area, especially within the construction area of the concrete mixing pile 2;

[0045] 3) Surveying and setting out: According to the provided coordinate reference points, conduct surveying and setting out on the construction site according to the requirements of the design drawings;

[0046] 4) Excavating trenches: According to the control line of the foundation pit 4 retaining edge, use an excavator to excavate trenches and remove underground obstacles. The surplus soil from the trench excavation should be promptly processed to ensure normal construction;

[0047] 5) Installation of guide rails: Place the guide rails in the trench after excavation is completed, and set construction pile marks to facilitate the construction positioning of the cement mixing piles 2 and precast reinforced concrete I-shaped piles 31 and V-shaped piles 32.

[0048] 6) Construction of cement mixing piles 2: Use a triaxial mixer to mix and grout the soil mass of the foundation pit 4 to the designed predetermined depth, and then move to the next position to continue the construction of cement mixing piles.

[0049] 7) Construction of precast reinforced concrete piles: Before the cement mixing piles 2 start to set, use a precast pile driving machine to insert the precast I-shaped steel reinforcement cages 311 and V-shaped steel reinforcement cages 321 into the designed predetermined positions of the cement mixing piles 2 respectively.

[0050] 8) Curing of cement mixing piles 2;

[0051] 9) Steel bar binding and concrete pouring construction of the connecting beam 6 at the top of the precast reinforced concrete piles;

[0052] 10) Earth excavation of the foundation pit 4.

[0053] In this embodiment, the present invention relates to a precast reinforced concrete composite structure retaining pile.

[0054] The precast reinforced concrete composite structure retaining pile includes a concrete row pile composed of a plurality of cement mixing piles and a plurality of precast piles for integrating the plurality of cement mixing piles into a whole. At least two groups of concrete row piles are provided, and the multiple groups of concrete row piles are arranged in parallel on the outer peripheral side of the foundation pit. Precast piles are arranged along the layout direction of the concrete row piles, and each precast pile is inserted into multiple adjacent groups of concrete row piles. The precast piles include precast reinforced concrete I-shaped piles and a plurality of precast reinforced concrete V-shaped piles. The I-shaped piles are all located in at least two rows of cement mixing piles. One V-shaped pile is arranged in each of the adjacent two I-shaped piles. By arranging a plurality of precast piles in the row of concrete row piles to form a whole, the strength and stability of the pile body can be increased, thereby improving the overall shear strength of the retaining pile, and the performance of the retaining pile can be fully exerted. The V-shaped pile can convert the shear force into a part of the extrusion force along the length direction of the foundation pit, thereby reducing the shear force exerted by the soil mass, so as to improve the shear strength and safety performance, and can also increase the stress area, solving the problem that the circular reinforced concrete cast-in-place row piles in the prior art need to bear the soil pressure of the foundation pit and have poor shear strength.

[0055] In summary, although the present invention has been disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those of ordinary skill in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is subject to the scope defined by the claims.

Claims

1. A precast reinforced concrete composite structure retaining pile, characterized in that, It includes a concrete row pile composed of a plurality of concrete mixing piles and a plurality of precast piles for integrating the plurality of concrete mixing piles; at least two groups of the concrete row piles are provided, and the multiple groups of the concrete row piles are arranged in parallel on the outer peripheral side of the foundation pit. The precast piles are arranged along the layout direction of the concrete row piles, and each precast pile is inserted into multiple adjacent concrete row piles; the precast piles include I-shaped piles of precast reinforced concrete and a plurality of V-shaped piles of precast reinforced concrete; the I-shaped piles are all located in at least two rows of the concrete mixing piles; one V-shaped pile is arranged in each of two adjacent I-shaped piles.

2. The precast reinforced concrete composite structure supporting pile according to claim 1, wherein, The central axis of each I-shaped pile is arranged in parallel with the central axes of a plurality of the concrete mixing piles arranged side by side.

3. The precast reinforced concrete composite structure retaining pile according to claim 1, wherein, The width of the I-shaped pile along the layout direction of the concrete row pile is less than the diameter of the concrete mixing pile, and the thickness of the I-shaped pile along the direction perpendicular to the layout direction of the concrete row pile is less than three times the radius of the concrete mixing pile.

4. The precast reinforced concrete composite structure supporting pile according to claim 1, characterized in that, Two groups of the concrete mixing piles are arranged at intervals between two adjacent I-shaped piles.

5. The precast reinforced concrete composite structure retaining pile according to claim 1, characterized in that, The I-shaped pile includes a plurality of first main reinforcement bars and a plurality of first stirrup bars; the plurality of first main reinforcement bars are arranged at vertical intervals to enclose the shape of the I-shaped pile; the plurality of first stirrup bars are arranged at intervals along the length direction of the plurality of first main reinforcement bars, and each first stirrup bar is fixedly connected to the outer sides of the plurality of first main reinforcement bars at the same horizontal plane to form a steel reinforcement cage with an I-shaped cross section; the I-shaped steel reinforcement cage is buried in the concrete row pile and integrally solidifies with the corresponding plurality of concrete mixing piles.

6. The precast reinforced concrete composite structure supporting pile according to claim 1, wherein, The opening side of the V-shaped pile faces the foundation pit.

7. The precast reinforced concrete composite structure retaining pile according to claim 1, characterized in that, The thickness of the V-shaped pile along the direction perpendicular to the layout direction of the concrete row pile is less than the thickness of the I-shaped pile along the direction perpendicular to the layout direction of the concrete row pile.

8. The precast reinforced concrete composite structure supporting pile according to claim 7, characterized in that, Both sides of the opening side of the V-shaped pile are connected to the inner side surfaces of the corresponding I-shaped piles.

9. The precast reinforced concrete composite structure supporting pile according to claim 1, characterized in that, The V-shaped pile includes a plurality of second main reinforcement bars and a plurality of second stirrup bars. The plurality of second main reinforcement bars are arranged at vertical intervals to enclose a V-shaped structure. The plurality of second stirrup bars are arranged at intervals along the length direction of the second main reinforcement bars. Each second stirrup bar is fixedly connected to the outer side surfaces of the plurality of second main reinforcement bars at the same horizontal plane to form a steel reinforcement cage with a V-shaped cross section; the V-shaped steel reinforcement cage is buried between two adjacent I-shaped piles and integrally solidifies with the two adjacent I-shaped piles and the corresponding plurality of concrete mixing piles.

10. The precast reinforced concrete composite structure supporting pile according to claim 1, wherein, The burial depth of the precast pile along the longitudinal direction is the same as that of the concrete mixing pile, and both are greater than the excavation depth of the foundation pit.

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