Pre-embedded module for enhancing bending resistance of pile body, concrete pipe pile and preparation process

Abstract

The invention provides a pre-embedded module for enhancing bending resistance of a pile body, a concrete pipe pile and a preparation process, and belongs to the technical field of pile foundations, the pre-embedded module comprises a plurality of arc-shaped reinforcing plates which are annularly distributed, and a gap is formed between any two adjacent arc-shaped reinforcing plates; each horizontal reinforcing piece comprises a first connecting part and a second connecting part which are fixedly connected with the arc-shaped reinforcing plate; the annular reinforcing plate is connected with the second connecting part, and the outer side diameter of the annular reinforcing plate is smaller than the inner side diameter of a reinforcement cage in the concrete pipe pile. Before the concrete pipe pile is formed, the pre-embedded module is additionally arranged at the position with the maximum bending moment, the pre-embedded module is connected with the reinforcement cage in the concrete pipe pile, and then the concrete pipe pile is formed, so that the manufacturing cost of the concrete pipe pile is saved, the overall diameter of the formed concrete pipe pile is not increased, and the construction efficiency is improved. Therefore, the stress area is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of pile foundation engineering, and relates to a concrete pipe pile, in particular to a pre-buried module for enhancing the bending resistance of a pile body, a concrete pipe pile and a preparation process. Background Art

[0002] Photovoltaic support foundation is one of the components of solar photovoltaic system, mainly used to support and fix solar panels. Among the many photovoltaic support foundations, prestressed concrete piles are widely used because of their advantages such as strong flexibility, high wind resistance, low construction cost, high construction efficiency and strong durability.

[0003] Traditional photovoltaic piles mostly use ordinary prestressed high-strength concrete pipe piles. When the pipe piles are used in the tidal flats or offshore photovoltaic pile foundations, they are subject to large wave forces and water flow forces, and the bending moment of the pipe piles at 3 to 4 times the diameter below the mud surface reaches the maximum value. However, due to the centrifugal production process of the pipe piles, the pipe piles are uniform and have equal cross-sectional structures. Therefore, in order to ensure that the pile body under the mud surface has sufficient bending strength, it is often necessary to configure the entire pipe pile body with steel bars and concrete in accordance with the maximum bending moment requirements, which undoubtedly greatly increases the cost.

[0004] In addition, the wave and current force is positively correlated with the diameter of the pipe pile, that is, the larger the diameter of the pipe pile, the greater the wave and current force it is subjected to, and the correspondingly greater force it is subjected to. Although increasing the diameter of the pipe pile can improve its bending bearing capacity, it will also lead to increased force and further increase the cost. Summary of the invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the prior art and to propose a concrete pipe pile which only partially improves the bending strength without increasing the diameter of the entire pipe pile.

[0006] The object of the present invention can be achieved by the following technical scheme: A pre-embedded module for enhancing the bending resistance of a pile body, comprising:

[0007] A plurality of arc-shaped reinforcing plates are distributed in an annular shape to form a columnar structure with a preset diameter, and each arc-shaped reinforcing plate comprises an inner arc-shaped concave surface and an outer arc-shaped convex surface, wherein the inner arc-shaped concave surface of each arc-shaped reinforcing plate faces the axis of the columnar structure, and a gap is provided between any two adjacent arc-shaped reinforcing plates;

[0008] A plurality of horizontal reinforcement members, including a first connection portion and a second connection portion fixedly connected to the inner arc-shaped concave surface, wherein the first connection portion and the second connection portion are respectively located on two sides or two ends corresponding to the horizontal reinforcement member, wherein the positions of the horizontal reinforcement members on two adjacent arc-shaped reinforcement plates correspond to each other;

[0009] At least two closed annular reinforcement plates are respectively fixedly connected to the second connection parts of the horizontal reinforcement members at both ends of the arc reinforcement plate, and the outer diameter of the annular reinforcement plate is smaller than the inner diameter of the steel cage in the concrete pipe pile.

[0010] In the above-mentioned embedded module for enhancing the bending resistance of the pile body, the horizontal reinforcement is arranged in a plate shape or in a rod shape. When the horizontal reinforcement is arranged in a plate shape, the horizontal reinforcement is a horizontal reinforcement plate, and the first connection part is the first connection side surface of the horizontal reinforcement plate connected to the arc-shaped reinforcement plate, and the second connection part is the second connection side surface of the horizontal reinforcement plate connected to the annular reinforcement plate; when the horizontal reinforcement is arranged in a rod shape, the horizontal reinforcement is a horizontal reinforcement rod, and the first connection part is the first connection end surface of the horizontal reinforcement plate connected to the arc-shaped reinforcement plate, and the second connection part is the second connection end surface of the horizontal reinforcement plate connected to the annular reinforcement plate.

[0011] In the above-mentioned embedded module for enhancing the bending resistance of the pile body, the annular reinforcement plate is arranged in a circular shape or a polygonal shape. When the annular reinforcement plate is arranged in a circular shape, the second connecting portion is arranged in an arc surface and fits with the outer side surface of the annular reinforcement plate; when the annular reinforcement plate is arranged in a polygonal shape, the second connecting portion is arranged in a triangular plane and fits with the corner of the annular reinforcement plate.

[0012] In the above-mentioned embedded module for enhancing the bending resistance of the pile body, the arc-shaped reinforcement plate is arranged with a variable diameter along the length direction, and the thickness of the middle part of the arc-shaped reinforcement plate is greater than the thickness of the two ends of the arc-shaped reinforcement plate, wherein the thickness gradually decreases from the middle part of the arc-shaped reinforcement plate to the ends of the arc-shaped reinforcement plate.

[0013] The present invention also provides a pre-embedded module for enhancing the bending resistance of a pile body, comprising:

[0014] A plurality of arc-shaped reinforcing plates are distributed in an annular shape to form a columnar structure with a preset diameter, and each arc-shaped reinforcing plate comprises an inner arc-shaped concave surface and an outer arc-shaped convex surface, wherein the inner arc-shaped concave surface of each arc-shaped reinforcing plate faces the axis of the columnar structure, and a gap is provided between any two adjacent arc-shaped reinforcing plates;

[0015] A plurality of horizontal reinforcements, including a first connection portion and a second connection portion fixedly connected to the inner arc-shaped concave surface, wherein the first connection portion is located at a side or end portion of the horizontal reinforcement, and the second connection portion is located at a surface of the horizontal reinforcement, wherein the positions of the horizontal reinforcements on two adjacent arc-shaped reinforcement plates correspond one to one;

[0016] At least two closed annular reinforcement plates are respectively fixedly connected to the second connection parts of the horizontal reinforcement members at both ends of the arc reinforcement plate, and the inner diameter of the annular reinforcement plate is larger than the outer diameter of the steel cage in the concrete pipe pile.

[0017] In the above-mentioned embedded module for enhancing the bending resistance of the pile body, the horizontal reinforcement is arranged in a plate shape or in a rod shape, wherein, when the horizontal reinforcement is arranged in a plate shape, the horizontal reinforcement is a horizontal reinforcement plate, and the first connection portion is located at the connecting side surface of the side portion of the horizontal reinforcement plate, and the second connection portion is located at the upper surface or the lower surface of the horizontal reinforcement plate; when the horizontal reinforcement is arranged in a rod shape, the horizontal reinforcement is a horizontal reinforcement rod, and the first connection portion is located at the connecting end surface of the end portion of the horizontal reinforcement rod, and the second connection portion is located at the side surface of the side portion of the horizontal reinforcement rod.

[0018] The present invention also provides a concrete pipe pile having the embedded module for enhancing the bending resistance of the pile body, comprising:

[0019] The embedded module;

[0020] Steel reinforcement cage, including:

[0021] A plurality of vertically arranged main ribs, each of which is located between two adjacent arc-shaped reinforcing plates in the embedded module, wherein the axial direction of the main rib is consistent with the length direction of the arc-shaped reinforcing plate;

[0022] The stirrups are spirally wound around the main reinforcement, and the horizontal reinforcement in the embedded module is inserted into the gap between two adjacent circles of stirrups, wherein the annular reinforcement plate in the embedded module is located in the hollow cylinder surrounded by the stirrups.

[0023] The present invention also provides a concrete pipe pile having the embedded module for enhancing the bending resistance of the pile body, comprising:

[0024] The embedded module;

[0025] Steel reinforcement cage, including:

[0026] A plurality of vertically arranged main ribs, each of which is located between two adjacent arc-shaped reinforcing plates in the embedded module, wherein the axial direction of the main rib is consistent with the length direction of the arc-shaped reinforcing plate;

[0027] The stirrups are spirally wound around the main reinforcement, and the horizontal reinforcement in the embedded module is inserted into the gap between two adjacent circles of stirrups, wherein the annular reinforcement plate in the embedded module is located outside the hollow cylinder surrounded by the stirrups.

[0028] The present invention also provides a preparation process for processing the concrete pipe pile, comprising the steps of:

[0029] S1: The horizontal reinforcement member and the arc reinforcement plate are welded and fixed by the first connection part, and the horizontal reinforcement member and the annular reinforcement plate are welded and fixed by the second connection part to form an embedded module;

[0030] S2: inserting a plurality of main reinforcements respectively between two adjacent arc-shaped reinforcement plates;

[0031] S3: The stirrups are wound and extended in a spiral manner from one end of the main reinforcement to the other end of the main reinforcement, so that the horizontal reinforcement is inserted into the gap between two adjacent circles of stirrups, and the annular reinforcement plate is located in the hollow cylinder surrounded by the stirrups, forming the skeleton of the concrete pipe pile;

[0032] S4: placing the skeleton in step S3 into a casting mold, injecting a certain amount of concrete into the mold, and filling the hollowed-out parts of the skeleton with concrete by centrifugal pouring to form concrete pipe piles after shaping.

[0033] The present invention also provides a preparation process for processing the concrete pipe pile, comprising the steps of:

[0034] S1: The horizontal reinforcement member and the arc-shaped reinforcement plate are welded and fixed to each other through the first connecting portion to form a semi-finished product of the embedded module;

[0035] S2: positioning multiple main bars by tooling, and winding and extending the stirrups in a spiral manner from one end of the main bar to the other end of the main bar by automatic winding equipment to form a steel cage, wherein step S1 and step S2 can be performed simultaneously at different workstations;

[0036] S3: installing the semi-finished product in step S1 to the position where the bending moment on the steel cage in step S2 is the largest, and inserting the horizontal reinforcement in the semi-finished product into the gap between two adjacent circles of stirrups;

[0037] S4: inserting the annular reinforcement plate from one end of the steel cage and abutting against the second connection portion of the horizontal reinforcement member, and fixing the annular reinforcement plate and the horizontal reinforcement member by welding to form a skeleton of the concrete pipe pile, wherein the annular reinforcement plate is located outside the hollow cylinder surrounded by the stirrups;

[0038] S5: placing the skeleton in step S4 into a casting mold, injecting a certain amount of concrete into the mold, and filling the hollowed-out parts of the skeleton with concrete by centrifugal pouring to form concrete pipe piles after shaping.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] (1) Before the concrete pipe pile is formed, a pre-embedded module is added at the position where the bending moment is the largest, and the pre-embedded module is connected to the steel cage in the concrete pipe pile, and then the concrete pipe pile is formed. This not only saves the manufacturing cost of the concrete pipe pile, but also does not increase the overall diameter of the concrete pipe pile after forming, thereby reducing the stress area.

[0041] (2) The arc-shaped reinforcing plate in this embodiment is a galvanized steel plate. Since steel has strong tensile strength, it can greatly increase the bending bearing capacity at the specified position. In addition, the galvanized steel plate has high corrosion resistance, which can extend the service life of the concrete pipe pile.

[0042] (3) The reason why multiple arc-shaped reinforcing plates are provided with a gap between two adjacent arc-shaped reinforcing plates instead of adopting a completely closed annular structure is that when the concrete pipe pile is cast, concrete is first injected and then centrifugal casting is used for production and molding. The existence of the gap allows concrete to be filled into the gap between two adjacent arc-shaped reinforcing plates, thereby improving the connection strength between the concrete and the arc-shaped reinforcing plates. If a closed annular structure is used, the concrete will flow on the surface of the arc-shaped reinforcing plates during centrifugal casting, and the two will be connected only by the bonding force between them, which has a poor firmness effect and affects the service life of the concrete pipe pile.

[0043] (4) The reason for setting the horizontal reinforcement and the annular reinforcement plate is that the welding between the horizontal reinforcement and the annular reinforcement plate, and the interaction with the concrete, can strengthen the mechanical anchoring force of the embedded module in the radial direction. The embedded module connected to the steel cage, in combination with the concrete, can not only achieve strength enhancement in the axial direction of the concrete pipe pile, but also achieve strength enhancement in the radial direction, thereby improving the bending bearing capacity of the entire concrete pipe pile. In addition, the problem of low efficiency of the interaction caused by the incoordination between the deformation of the arc reinforcement plate and the small anchoring force is solved, and the problem of the arc reinforcement plate being unable to be fixed and easily deviated during centrifugal production is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a structural schematic diagram of a pre-embedded module for enhancing the bending resistance of a pile body according to the present invention, in which a horizontal reinforcement member is in a plate shape, and a circular ring-shaped reinforcement plate is connected to the end of the horizontal reinforcement member.

[0045] Figure 2 It is a structural schematic diagram of a pre-embedded module for enhancing the bending resistance of a pile body according to the present invention, in which a horizontal reinforcement member is in a plate shape, and a polygonal annular reinforcement plate is connected to the end of the horizontal reinforcement member.

[0046] Figure 3 It is a structural schematic diagram of a pre-embedded module for enhancing the bending resistance of a pile body according to the present invention, in which a horizontal reinforcement member is in a rod shape and an annular reinforcement plate is connected to the end of the horizontal reinforcement member.

[0047] Figure 4 The present invention is a structural schematic diagram of a concrete pipe pile skeleton in which an annular reinforcing plate is located inside a steel cage.

[0048] Figure 5It is a structural schematic diagram of a pre-embedded module for enhancing the bending resistance of a pile body according to the present invention, in which a horizontal reinforcement member is in a plate shape, and a circular ring-shaped reinforcement plate is connected to the surface of the horizontal reinforcement member.

[0049] Figure 6 It is a structural schematic diagram of a pre-embedded module for enhancing the bending resistance of a pile body according to the present invention, in which a horizontal reinforcement member is in a rod shape and a circular ring reinforcement plate is connected to the surface of the horizontal reinforcement member.

[0050] Figure 7 The present invention is a structural schematic diagram of a concrete pipe pile skeleton in which an annular reinforcing plate is located outside a steel cage.

[0051] In the figure, 10, arc-shaped reinforcement plate; 11, inner arc-shaped concave surface; 12, outer arc-shaped convex surface; 20, horizontal reinforcement member; 21, first connecting part; 22, second connecting part; 30, annular reinforcement plate; 31, corner; 40, steel cage; 41, main reinforcement; 42, stirrups. DETAILED DESCRIPTION

[0052] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0053] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0054] Embodiment 1

[0055] like Figures 1 to 4 As shown, the present invention provides an embedded module for enhancing the bending resistance of a pile body, comprising:

[0056] A plurality of arc-shaped reinforcing plates 10 are distributed in an annular shape to form a columnar structure with a preset diameter, and each arc-shaped reinforcing plate 10 includes an inner arc-shaped concave surface 11 and an outer arc-shaped convex surface 12, wherein the inner arc-shaped concave surface 11 of each arc-shaped reinforcing plate 10 faces the axis of the columnar structure, and a gap is provided between any two adjacent arc-shaped reinforcing plates 10;

[0057] A plurality of horizontal reinforcement members 20, including a first connection portion 21 and a second connection portion 22 fixedly connected to the inner arc-shaped concave surface 11, and the first connection portion 21 and the second connection portion 22 are respectively located at two corresponding sides or ends of the horizontal reinforcement member 20, wherein the positions of the horizontal reinforcement members 20 on two adjacent arc-shaped reinforcement plates 10 correspond one to one;

[0058] At least two closed annular reinforcement plates 30 are respectively fixedly connected to the second connection parts 22 of the horizontal reinforcement members 20 at both ends of the arc reinforcement plate 10, and the outer diameter of the annular reinforcement plate 30 is smaller than the inner diameter of the steel cage 40 in the concrete pipe pile.

[0059] It is worth mentioning that in the prior art, concrete pipe piles installed in the mudflat or offshore will be subject to large wave forces and water flow forces, causing the bending moment of the concrete pipe piles located 3-4 times the diameter below the mud surface to reach the maximum value. Since the process of concrete pipe piles determines that the cross-section of the pipe piles is a uniform equal cross-section setting, the entire concrete pipe pile needs to be configured with steel bars and concrete according to the diameter required at the maximum bending moment, thereby increasing the manufacturing cost of the concrete pipe piles. In addition, since the wave and flow force is positively correlated with the diameter of the concrete pipe pile, that is, the larger the diameter, the greater the wave and flow force, so that the force on the pipe pile is also greater, so increasing the diameter of the pipe pile increases the bending bearing capacity, but also increases the force area and manufacturing cost.

[0060] In this embodiment, before the concrete pipe pile is formed, a pre-embedded module is added at the position where the bending moment is the largest, and the pre-embedded module is connected to the steel cage 40 in the concrete pipe pile, and then the concrete pipe pile is formed. This not only saves the manufacturing cost of the concrete pipe pile, but also does not increase the overall diameter of the concrete pipe pile after forming, thereby reducing the stress area.

[0061] It is worth mentioning that the arc reinforcing plate 10 in this embodiment is a galvanized steel plate. Since steel has strong tensile strength, it can greatly increase the bending bearing capacity at the designated position. In addition, the galvanized steel plate has high corrosion resistance and can extend the service life of the concrete pipe piles.

[0062] In addition, the reason why multiple arc-shaped reinforcing plates 10 are provided and there is a gap between two adjacent arc-shaped reinforcing plates 10 instead of adopting a completely closed annular structure is that when the concrete pipe pile is cast, concrete is first injected and then centrifugal casting is used for production and molding. The existence of the gap can fill the concrete into the gap between two adjacent arc-shaped reinforcing plates 10, thereby improving the connection strength between the concrete and the arc-shaped reinforcing plates 10. If it is a closed annular structure, the concrete will flow on the surface of the arc-shaped reinforcing plate 10 during centrifugal casting, and the two will be connected only by the bonding force between them, and the firmness effect is poor, which affects the service life of the concrete pipe pile.

[0063] It is further pointed out that in the present embodiment, the embedded module not only includes the arc-shaped reinforcement plate 10, but also has a horizontal reinforcement member 20 and an annular reinforcement plate 30, wherein the horizontal reinforcement member 20 and the arc-shaped reinforcement plate 10 are fixed by welding, and the horizontal reinforcement member 20 and the annular reinforcement plate 30 are fixed by welding.

[0064] In this embodiment, the horizontal reinforcement 20 and the annular reinforcement plate 30 are provided so that the welding between the horizontal reinforcement 20 and the annular reinforcement plate 30 and the concrete can strengthen the mechanical anchoring force of the embedded module in the radial direction. The embedded module connected to the steel cage 40, in combination with the concrete, can not only achieve the strength enhancement in the axial direction of the concrete pipe pile, but also achieve the strength enhancement in the radial direction, thereby improving the bending bearing capacity of the entire concrete pipe pile. In addition, the problem of low efficiency of the joint action caused by the incoordination between the deformation of the arc reinforcement plate 10 and the concrete and the small anchoring force is solved, and the problem of the arc reinforcement plate 10 being unable to be fixed and easy to deviate during centrifugal production is solved.

[0065] It is worth mentioning that the multiple horizontal reinforcement members 20 connected to the arc-shaped reinforcement plate 10 and the spacing between two adjacent horizontal reinforcement members 20 are between 300-600 mm, and the thickness of the annular reinforcement plate 30 is between 5-8 mm and the length is between 50-100 mm.

[0066] Preferably, the horizontal reinforcement 20 is arranged in a plate shape or in a rod shape. When the horizontal reinforcement 20 is arranged in a plate shape, the horizontal reinforcement 20 is a horizontal reinforcement plate, and the first connection portion 21 is the first connection side surface of the horizontal reinforcement plate connected to the arc-shaped reinforcement plate 10, and the second connection portion 22 is the second connection side surface of the horizontal reinforcement plate connected to the annular reinforcement plate 30; when the horizontal reinforcement 20 is arranged in a rod shape, the horizontal reinforcement 20 is a horizontal reinforcement rod, and the first connection portion 21 is the first connection end surface of the horizontal reinforcement plate connected to the arc-shaped reinforcement plate 10, and the second connection portion 22 is the second connection end surface of the horizontal reinforcement plate connected to the annular reinforcement plate 30.

[0067] It is worth mentioning that when the horizontal reinforcement 20 is set in a plate shape, the horizontal reinforcement 20 is a horizontal reinforcement plate, and the thickness of the horizontal reinforcement plate is between 4-5 mm, wherein multiple horizontal reinforcement plates can be connected to each arc-shaped reinforcement plate 10, but the annular reinforcement plate 30 is generally connected to the horizontal reinforcement plates at both ends of the arc-shaped reinforcement plate 10.

[0068] In addition, when the horizontal reinforcement member 20 is arranged in a rod shape, the horizontal reinforcement member 20 is a horizontal reinforcement rod, and the horizontal reinforcement rod can generally be a pin, wherein multiple horizontal reinforcement rods can be connected to each arc-shaped reinforcement plate 10. Generally, for a single arc-shaped reinforcement plate 10, although the number of horizontal reinforcement rods connected to the arc-shaped reinforcement plate 10 is greater than the number of horizontal reinforcement plates, the annular reinforcement plate 30 is generally still connected to the horizontal reinforcement rods at both ends of the arc-shaped reinforcement plate 10.

[0069] Preferably, the annular reinforcement plate 30 is arranged in a circular shape or a polygonal shape. When the annular reinforcement plate 30 is arranged in a circular shape, the second connecting portion 22 is arranged in an arc surface and fits with the outer side surface of the annular reinforcement plate 30; when the annular reinforcement plate 30 is arranged in a polygonal shape, the second connecting portion 22 is arranged in a triangular plane and fits with the corner 31 of the annular reinforcement plate 30.

[0070] It is worth mentioning that the annular reinforcement plate 30 can be arranged in a circular shape or a polygonal shape, but both have corresponding advantages and disadvantages.

[0071] When the annular reinforcement plate 30 is set in a circular shape, its processing technology is relatively simple and the manufacturing efficiency is relatively high. However, since the annular reinforcement plate 30 and the horizontal reinforcement member 20 are connected in surface contact, there is no positioning structure between the two. As a result, when the annular reinforcement plate 30 is connected to the horizontal reinforcement member 20, the angle between the two adjacent arc-shaped reinforcement plates 10 cannot be accurately controlled. An additional positioning structure is required to ensure the precise angle between the two adjacent arc-shaped reinforcement plates 10.

[0072] When the annular reinforcement plate 30 is arranged in a polygonal shape, although its processing technology becomes more complicated than that of a circular shape, a corner 31 is arranged on the polygonal annular reinforcement plate 30, so that the horizontal reinforcement member 20 can be connected to the corner 31 of the annular reinforcement plate 30. Not only does it not need to rely on an additional positioning structure to realize the connection between the horizontal reinforcement member 20 and the annular reinforcement plate 30, but it can also accurately control the angle between two adjacent arc-shaped reinforcement plates 10, thereby accelerating the molding speed of the entire embedded module.

[0073] It is further pointed out that when the annular reinforcing plate 30 is arranged in a polygonal shape, the polygon is generally a regular polygon, such as a regular hexagon, a regular octagon, and the like.

[0074] In addition, the number of the arc-shaped reinforcing plates 10 is generally more than six. Therefore, when the number of the arc-shaped reinforcing plates 10 is more than six, it means that the force distribution at the position where the embedded module is located is relatively uniform, and generally there is no weak link.

[0075] Preferably, the arc reinforcing plate 10 is arranged to be variable in diameter along the length direction, and the thickness of the middle part of the arc reinforcing plate 10 is greater than the thickness of the two ends of the arc reinforcing plate 10, wherein the thickness gradually decreases from the middle part of the arc reinforcing plate 10 to the end part of the arc reinforcing plate 10.

[0076] In this embodiment, the arc reinforcing plate 10 is set to a variable diameter structure, and the thickness is larger at the position with larger bending moment, and the thickness is smaller at the position with smaller bending moment. In this way, the material can be fully utilized and the manufacturing cost of the entire concrete pipe pile can be reduced.

[0077] For example, the length of the concrete pipe pile is 10m, the bending moment is the largest at the middle 1m, and the bending moment gradually decreases toward the two ends. Then the middle thickness of the arc reinforcing plate 10 can be set to 20mm, and the thickness at the two ends can be reduced to 6mm.

[0078] The present invention also provides a concrete pipe pile, which comprises:

[0079] Embedded module;

[0080] Steel reinforcement cage 40, comprising:

[0081] A plurality of vertically arranged main ribs 41, each of which is located between two adjacent arc-shaped reinforcing plates 10 in the embedded module, wherein the axial direction of the main rib 41 is consistent with the length direction of the arc-shaped reinforcing plate 10;

[0082] The stirrups 42 are spirally wound around the main reinforcement 41, and the horizontal reinforcement 20 in the embedded module is inserted into the gap between two adjacent circles of stirrups 42, wherein the annular reinforcement plate 30 in the embedded module is located in the hollow cylinder surrounded by the stirrups 42.

[0083] The present invention also provides a preparation process of a concrete pipe pile, comprising the steps of:

[0084] S1: The horizontal reinforcement member 20 and the arc reinforcement plate 10 are welded and fixed through the first connection portion 21, and the horizontal reinforcement member 20 and the annular reinforcement plate 30 are welded and fixed through the second connection portion 22 to form an embedded module;

[0085] S2: inserting the plurality of main ribs 41 respectively and correspondingly between two adjacent arc-shaped reinforcing plates 10;

[0086] S3: The stirrups 42 are wound and extended in a spiral manner from one end of the main reinforcement 41 to the other end of the main reinforcement 41, so that the horizontal reinforcement 20 is inserted into the gap between two adjacent circles of stirrups 42, and the annular reinforcement plate 30 is located in the hollow cylinder surrounded by the stirrups 42, forming the skeleton of the concrete pipe pile;

[0087] S4: placing the skeleton in step S3 into a casting mold, injecting a certain amount of concrete into the mold, and filling the hollowed-out parts of the skeleton with concrete by centrifugal pouring to form concrete pipe piles after shaping.

[0088] Embodiment 2

[0089] like Figures 5 to 7As shown, the difference between this embodiment and the first embodiment is that the arc-shaped reinforcement plate 10 and the annular reinforcement plate 30 in the first embodiment are connected to the opposite sides of the horizontal reinforcement 20, while the arc-shaped reinforcement plate 10 in this embodiment is connected to the side of the horizontal reinforcement 20, and the annular reinforcement plate 30 is connected to the surface of the horizontal reinforcement 20. The reason for this arrangement is that the embedded module needs to be connected to the steel cage 40 in the concrete pipe pile. When the arc-shaped reinforcement plate 10 and the annular reinforcement plate 30 are connected to the opposite sides of the horizontal reinforcement 20, the diameter of the annular reinforcement plate 30 is smaller than the diameter of the steel cage 40, that is, part of the structure of the embedded module is located outside the steel cage 40, and part of the structure is located inside the steel cage 40, which increases the complexity of the connection between the embedded module and the steel cage 40; and when the arc-shaped reinforcement plate 10 is connected to the side of the horizontal reinforcement 20 and the annular reinforcement plate 30 is connected to the surface of the horizontal reinforcement 20, the diameter of the annular reinforcement plate 30 is larger than the diameter of the steel cage 40, and the overall structure of the embedded module is located outside the steel cage 40, which facilitates the connection between the embedded module and the steel cage 40.

[0090] It is further pointed out that the horizontal reinforcement 20 is arranged in a plate shape or in a rod shape, wherein, when the horizontal reinforcement 20 is arranged in a plate shape, the horizontal reinforcement 20 is a horizontal reinforcement plate, and the first connection portion 21 is located at the connecting side surface of the side portion of the horizontal reinforcement plate, and the second connection portion 22 is located at the upper surface or the lower surface of the horizontal reinforcement plate; when the horizontal reinforcement 20 is arranged in a rod shape, the horizontal reinforcement 20 is a horizontal reinforcement rod, and the first connection portion 21 is located at the connecting end surface of the end portion of the horizontal reinforcement rod, and the second connection portion 22 is located at the side surface of the side portion of the horizontal reinforcement rod.

[0091] The present invention also provides a concrete pipe pile, comprising:

[0092] Embedded module;

[0093] Steel reinforcement cage 40, comprising:

[0094] A plurality of vertically arranged main ribs 41, each of which is located between two adjacent arc-shaped reinforcing plates 10 in the embedded module, wherein the axial direction of the main rib 41 is consistent with the length direction of the arc-shaped reinforcing plate 10;

[0095] The stirrups 42 are spirally wound around the main reinforcement 41, and the horizontal reinforcement 20 in the embedded module is inserted into the gap between two adjacent circles of stirrups 42, wherein the annular reinforcement plate 30 in the embedded module is located outside the hollow cylinder surrounded by the stirrups 42.

[0096] The present invention also provides a preparation process of a concrete pipe pile, comprising the steps of:

[0097] S1: The horizontal reinforcement member 20 and the arc-shaped reinforcement plate 10 are welded and fixed to each other through the first connection portion 21 to form a semi-finished product of the embedded module;

[0098] S2: positioning a plurality of main bars 41 by means of a tool, and winding and extending the stirrups 42 in a spiral manner from one end of the main bar 41 to the other end of the main bar 41 by means of an automatic winding device to form a steel cage 40, wherein step S1 and step S2 can be performed simultaneously at different workstations;

[0099] S3: installing the semi-finished product in step S1 to the position where the bending moment is the largest on the steel cage 40 in step S2, and inserting the horizontal reinforcement 20 in the semi-finished product into the gap between two adjacent circles of stirrups 42;

[0100] S4: insert the annular reinforcing plate 30 from one end of the steel cage 40 and abut against the second connecting portion 22 of the horizontal reinforcing member 20, and fix the annular reinforcing plate 30 and the horizontal reinforcing member 20 by welding to form a skeleton of the concrete pipe pile, wherein the annular reinforcing plate 30 is located outside the hollow cylinder surrounded by the stirrups 42;

[0101] S5: placing the skeleton in step S4 into a casting mold, injecting a certain amount of concrete into the mold, and filling the hollowed-out parts of the skeleton with concrete by centrifugal pouring to form concrete pipe piles after shaping.

[0102] It should be noted that in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0103] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0104] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A pre-embedded module for enhancing the bending resistance of a pile body, characterized in that: include: A plurality of arc-shaped reinforcing plates are distributed in an annular shape to form a columnar structure with a preset diameter, and each arc-shaped reinforcing plate comprises an inner arc-shaped concave surface and an outer arc-shaped convex surface, wherein the inner arc-shaped concave surface of each arc-shaped reinforcing plate faces the axis of the columnar structure, and a gap is provided between any two adjacent arc-shaped reinforcing plates; A plurality of horizontal reinforcement members, including a first connection portion and a second connection portion fixedly connected to the inner arc-shaped concave surface, wherein the first connection portion and the second connection portion are respectively located on two sides or two ends corresponding to the horizontal reinforcement member, wherein the positions of the horizontal reinforcement members on two adjacent arc-shaped reinforcement plates correspond to each other; At least two closed annular reinforcement plates are respectively fixedly connected to the second connection parts of the horizontal reinforcement members at both ends of the arc reinforcement plate, and the outer diameter of the annular reinforcement plate is smaller than the inner diameter of the steel cage in the concrete pipe pile.

2. The embedded module for enhancing the bending resistance of the pile body according to claim 1 is characterized in that: The horizontal reinforcement is arranged in a plate shape or in a rod shape. When the horizontal reinforcement is arranged in a plate shape, the horizontal reinforcement is a horizontal reinforcement plate, and the first connection portion is the first connection side surface of the horizontal reinforcement plate connected to the arc-shaped reinforcement plate, and the second connection portion is the second connection side surface of the horizontal reinforcement plate connected to the annular reinforcement plate; when the horizontal reinforcement is arranged in a rod shape, the horizontal reinforcement is a horizontal reinforcement rod, and the first connection portion is the first connection end surface of the horizontal reinforcement plate connected to the arc-shaped reinforcement plate, and the second connection portion is the second connection end surface of the horizontal reinforcement plate connected to the annular reinforcement plate.

3. The embedded module for enhancing the bending resistance of the pile body according to claim 1, characterized in that: The annular reinforcement plate is arranged in a circular shape or a polygonal shape. When the annular reinforcement plate is arranged in a circular shape, the second connecting portion is arranged in an arc surface and fits with the outer side surface of the annular reinforcement plate; when the annular reinforcement plate is arranged in a polygonal shape, the second connecting portion is arranged in a triangular plane and fits with the corner of the annular reinforcement plate.

4. The embedded module for enhancing the bending resistance of the pile body according to claim 1, characterized in that: The arc reinforcing plate is arranged with a variable diameter along the length direction, and the thickness of the middle part of the arc reinforcing plate is greater than the thickness of the two ends of the arc reinforcing plate, wherein the thickness gradually decreases from the middle part of the arc reinforcing plate to the ends of the arc reinforcing plate.

5. A pre-embedded module for enhancing the bending resistance of a pile body, characterized in that: include: A plurality of arc-shaped reinforcing plates are distributed in an annular shape to form a columnar structure with a preset diameter, and each arc-shaped reinforcing plate comprises an inner arc-shaped concave surface and an outer arc-shaped convex surface, wherein the inner arc-shaped concave surface of each arc-shaped reinforcing plate faces the axis of the columnar structure, and a gap is provided between any two adjacent arc-shaped reinforcing plates; A plurality of horizontal reinforcements, including a first connection portion and a second connection portion fixedly connected to the inner arc-shaped concave surface, wherein the first connection portion is located at a side or end portion of the horizontal reinforcement, and the second connection portion is located at a surface of the horizontal reinforcement, wherein the positions of the horizontal reinforcements on two adjacent arc-shaped reinforcement plates correspond one to one; At least two closed annular reinforcement plates are respectively fixedly connected to the second connection parts of the horizontal reinforcement members at both ends of the arc reinforcement plate, and the inner diameter of the annular reinforcement plate is larger than the outer diameter of the steel cage in the concrete pipe pile.

6. The embedded module for enhancing the bending resistance of the pile body according to claim 5, characterized in that: The horizontal reinforcement is arranged in a plate shape or in a rod shape, wherein when the horizontal reinforcement is arranged in a plate shape, the horizontal reinforcement is a horizontal reinforcement plate, and the first connection portion is located at the connection side surface of the side portion of the horizontal reinforcement plate, and the second connection portion is located at the upper surface or the lower surface of the horizontal reinforcement plate; when the horizontal reinforcement is arranged in a rod shape, the horizontal reinforcement is a horizontal reinforcement rod, and the first connection portion is located at the connection end surface of the end portion of the horizontal reinforcement rod, and the second connection portion is located at the side surface of the side portion of the horizontal reinforcement rod.

7. A concrete pipe pile having a pre-embedded module for enhancing the bending resistance of the pile body as claimed in any one of claims 1 to 4, characterized in that: include: The embedded module; Steel reinforcement cage, including: A plurality of vertically arranged main ribs, each of which is located between two adjacent arc-shaped reinforcing plates in the embedded module, wherein the axial direction of the main rib is consistent with the length direction of the arc-shaped reinforcing plate; The stirrups are spirally wound around the main reinforcement, and the horizontal reinforcement in the embedded module is inserted into the gap between two adjacent circles of stirrups, wherein the annular reinforcement plate in the embedded module is located in the hollow cylinder surrounded by the stirrups.

8. A concrete pipe pile having the embedded module for enhancing the bending resistance of the pile body as claimed in claims 5 and 6, characterized in that: include: The embedded module; Steel reinforcement cage, including: A plurality of vertically arranged main ribs, each of which is located between two adjacent arc-shaped reinforcing plates in the embedded module, wherein the axial direction of the main rib is consistent with the length direction of the arc-shaped reinforcing plate; The stirrups are spirally wound around the main reinforcement, and the horizontal reinforcement in the embedded module is inserted into the gap between two adjacent circles of stirrups, wherein the annular reinforcement plate in the embedded module is located outside the hollow cylinder surrounded by the stirrups.

9. A preparation process for processing the concrete pipe pile according to claim 7, characterized in that: Includes steps: S1: The horizontal reinforcement member and the arc reinforcement plate are welded and fixed by the first connection part, and the horizontal reinforcement member and the annular reinforcement plate are welded and fixed by the second connection part to form an embedded module; S2: inserting a plurality of main reinforcements respectively between two adjacent arc-shaped reinforcement plates; S3: The stirrups are wound and extended in a spiral manner from one end of the main reinforcement to the other end of the main reinforcement, so that the horizontal reinforcement is inserted into the gap between two adjacent circles of stirrups, and the annular reinforcement plate is located in the hollow cylinder surrounded by the stirrups, forming the skeleton of the concrete pipe pile; S4: placing the skeleton in step S3 into a casting mold, injecting a certain amount of concrete into the mold, and filling the hollowed-out parts of the skeleton with concrete by centrifugal pouring to form concrete pipe piles after shaping.

10. A preparation process for processing the concrete pipe pile according to claim 8, characterized in that: Includes steps: S1: The horizontal reinforcement member and the arc-shaped reinforcement plate are welded and fixed to each other through the first connecting portion to form a semi-finished product of the embedded module; S2: positioning multiple main bars by tooling, and winding and extending the stirrups in a spiral manner from one end of the main bar to the other end of the main bar by automatic winding equipment to form a steel cage, wherein step S1 and step S2 can be performed simultaneously at different workstations; S3: installing the semi-finished product in step S1 to the position where the bending moment on the steel cage in step S2 is the largest, and inserting the horizontal reinforcement in the semi-finished product into the gap between two adjacent circles of stirrups; S4: inserting the annular reinforcement plate from one end of the steel cage and abutting against the second connection portion of the horizontal reinforcement member, and fixing the annular reinforcement plate and the horizontal reinforcement member by welding to form a skeleton of the concrete pipe pile, wherein the annular reinforcement plate is located outside the hollow cylinder surrounded by the stirrups; S5: placing the skeleton in step S4 into a casting mold, injecting a certain amount of concrete into the mold, and filling the hollowed-out parts of the skeleton with concrete by centrifugal pouring to form concrete pipe piles after shaping.

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