Construction method of prefabricated pipe piles

Abstract

The present invention provides a prefabricated tubular pile comprising a pile body and a reinforcement cage located within the hollow portion of the pile body. The pile body comprises a plurality of first main bars, the reinforcement cage comprises a plurality of second main bars, and a connector is provided between the first and second main bars. The present invention has advantages such as good pullout resistance and can accelerate construction progress.

Description

Technical Field

[0001] The present invention relates to the field of pipe piles, in particular to prefabricated pipe piles, a manufacturing method of prefabricated pipe piles and a construction method. Background Art

[0002] Pipe piles are commonly used in the construction of high-rise buildings, as well as the foundations of industrial and residential buildings. As the height of above-ground buildings increases, precast pipe piles are no longer solely used to support vertical pressure for underground structures that require pullout resistance. They must also possess high pullout resistance, making the connection between precast pipe piles and the foundation pile cap particularly important.

[0003] Currently, when connecting precast pipe piles to a foundation, a support plate is often placed inside the precast pipe pile cavity, followed by a steel cage, and finally concrete pouring. Consequently, the existing steel cage is separate from the precast pipe pile body, with no connecting structure between the cage and the pile. The pullout resistance between the cage and the pile relies solely on friction between the subsequently poured concrete and the inner wall of the pile body, resulting in poor pullout resistance. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. The present invention provides prefabricated pipe piles, wherein a connector is provided between the pipe piles and the reinforcement cage, thereby improving the pull-out resistance of the pipe piles.

[0005] The present invention provides a prefabricated pipe pile, comprising a pile body and a steel cage located in a hollow portion of the pile body, wherein the pile body comprises a plurality of first main bars, the steel cage comprises a plurality of second main bars, and a connector connecting the first main bars and the second main bars is provided between the two.

[0006] According to some embodiments of the present invention, a plurality of the connecting members are provided along the length direction of the first main rib and the second main rib, and the connecting members at the same height are distributed radially.

[0007] According to some embodiments of the present invention, connecting rings are provided at both ends of the connecting member, and the connecting rings at both ends respectively clamp the first main rib and the second main rib.

[0008] According to some embodiments of the present invention, at least a portion of the first main reinforcement and at least a portion of the second main reinforcement are arranged in a group, the first main reinforcement and the second main reinforcement in the same group are distributed along the radial direction of the pile body, and the connecting member connects the first main reinforcement and the second main reinforcement in the same group.

[0009] According to some embodiments of the present invention, at least a portion of the first main reinforcements and at least a portion of the second main reinforcements are arranged in a group, the first main reinforcements and the second main reinforcements in the same group are distributed along the radial direction of the pile body, and the connecting member connects the first main reinforcements and the second main reinforcements in different groups.

[0010] According to some embodiments of the present invention, two ends of the connecting member are welded to the first main reinforcement and the second main reinforcement respectively.

[0011] According to some embodiments of the present invention, both ends of the connecting member are tied and connected to the first main reinforcement and the second main reinforcement respectively.

[0012] The present invention also provides a method for manufacturing the above-mentioned prefabricated pipe piles, comprising the following steps:

[0013] S01: preparing the first main reinforcement and stirrups of the pile body;

[0014] S02: preparing the steel cage and placing the steel cage into a mold for pipe pile production;

[0015] S03: Installing the connecting member to connect the first main reinforcement and the second main reinforcement through the connecting member;

[0016] S04: pouring concrete into the mold and then forming it by centrifugal tensioning;

[0017] S05: After steaming and curing, demoulding is performed to obtain prefabricated pipe piles.

[0018] The present invention also provides a construction method for the above-mentioned prefabricated pipe piles, comprising the following steps:

[0019] S100: driving the pipe pile to a predetermined elevation;

[0020] S200: lowering the pallet assembly to a predetermined elevation; the pallet assembly includes a main rod, and the main rod is connected to a retractable or expandable pallet;

[0021] S300: Using a threading machine to thread the ends of the first main reinforcement, the second main reinforcement, and the platform main reinforcement;

[0022] S400: Connecting the first main reinforcement to the main reinforcement of the platform and the second main reinforcement to the main reinforcement of the platform using a steel bar connector;

[0023] S500: Pour concrete to form prefabricated pipe piles, steel cages, and foundation concrete to complete the construction.

[0024] According to some embodiments of the invention, a connecting portion is provided on the circumferential surface of the main rod, and a supporting member for supporting the pallet is provided below the connecting portion; the pallet includes a plurality of sub-pallets, the inner sides of the sub-pallets are movably connected to the connecting portion so as to be contracted or expanded relative to the main rod, and the sub-pallets form the pallet after expansion.

[0025] The present invention has at least the following technical effects:

[0026] 1. In the prefabricated pipe pile of the embodiment of the present invention, a connector is provided between the first main reinforcement of the pile body and the second main reinforcement of the reinforcement cage, which greatly improves the pull-out resistance of the prefabricated pipe pile.

[0027] 2. The prefabricated pipe piles of the embodiment of the present invention pre-buried the steel cage inside the pipe pile, avoiding on-site production of the steel cage, thereby improving the preparation quality of the steel cage and reducing on-site construction procedures, thereby accelerating the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the connection structure of pipe piles, connectors and reinforcement cages according to an embodiment of the present invention;

[0029] Figure 2 A schematic diagram of a connector according to an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the connection structure of the pipe pile, connector, reinforcement cage and support plate assembly according to an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the connection between the pipe pile and the cap after the construction is completed in one embodiment of the present invention;

[0032] Figure 5 A schematic diagram of a support plate assembly according to an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the lower end of a main rod according to an embodiment of the present invention;

[0034] Figure 7 A schematic diagram of a support plate according to an embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the lower end of a pull rod according to an embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of a connecting socket according to an embodiment of the present invention.

[0037] Figure numerals: pile body 100, first main reinforcement 110, steel cage 200, second main reinforcement 210, connecting piece 300, connecting ring 310, base main reinforcement 400, steel bar connecting head 500, main rod member 600, connecting part 610, connecting reinforcement 620, supporting member 630, support plate 700, first connecting ring 710, sub-support plate 720, connecting seat 721, pull rod 800, second connecting ring 810, cross bar 820. DETAILED DESCRIPTION

[0038] The following description, with reference to the accompanying drawings, is provided to facilitate a more comprehensive understanding of the various embodiments of the present disclosure as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be construed as merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications may be made to the various embodiments described herein without departing from the scope and spirit of the present disclosure. Furthermore, descriptions of well-known functions and configurations may be omitted for clarity and conciseness.

[0039] The terms and words used in the following description and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Therefore, it should be clear to those skilled in the art that the following description of various embodiments of the present disclosure is provided for illustration only and is not intended to limit the present disclosure as defined by the appended claims and their equivalents.

[0040] It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component surface" includes reference to one or more of such surfaces.

[0041] The terms "have", "may have", "include" or "may include" used in various embodiments of the present disclosure indicate the existence of the corresponding functions, operations, elements, etc. disclosed, but do not limit additional one or more functions, operations, elements, etc.

[0042] In addition, it should be understood that the terms "including" or "having" used in various embodiments of the present disclosure are intended to indicate the presence of features, numbers, operations, elements, components, or combinations thereof described in the specification, but do not exclude the presence or addition of one or more other features, numbers, operations, elements, components, or combinations thereof.

[0043] like Figure 1 and Figure 2 As shown, the present invention provides a prefabricated tubular pile comprising a pile body 100 and a reinforcement cage 200 located within the hollow portion of the pile body 100. The pile body 100 includes a plurality of first main bars 110, and the reinforcement cage 200 includes a plurality of second main bars 210. Connectors 300 are provided between the first and second main bars 110, 210. The provision of connectors 300 between the first and second main bars 110, 210 significantly improves the pullout resistance of the prefabricated tubular pile. Furthermore, because the reinforcement cage 200 is pre-embedded within the tubular pile, the present invention eliminates the need for on-site fabrication of the reinforcement cage 200. This improves the quality of the reinforcement cage 200 and reduces on-site construction steps, accelerating construction progress.

[0044] In certain embodiments, a plurality of connectors 300 are provided along the length of the first and second main ribs 110, 210, and the connectors 300 at the same height are radially distributed. The number of connectors 300 at the same height may be four to six, and the number of connectors 300 along the length of the first and second main ribs 110, 210 may be specifically set according to predetermined parameters.

[0045] In some embodiments, in order to facilitate the stable connection between the connecting member 300 and the first main reinforcement 110 and the second main reinforcement 210, connecting rings 310 are provided at both ends of the connecting member 300, and the connecting rings 310 at both ends respectively clamp the first main reinforcement 110 and the second main reinforcement 210.

[0046] In some embodiments, both ends of the connecting member 300 may also be respectively connected to the first main reinforcement 110 and the second main reinforcement 210 by welding or binding.

[0047] In some embodiments, at least a portion of the first main reinforcements 110 and at least a portion of the second main reinforcements 210 are arranged in a group. The first main reinforcements 110 and the second main reinforcements 210 in the same group are distributed radially along the pile body 100. The connector 300 connects the first main reinforcements 110 and the second main reinforcements 210 in the same group or connects the first main reinforcements 110 and the second main reinforcements 210 in different groups.

[0048] The present invention also provides a method for manufacturing the above-mentioned prefabricated pipe piles, comprising the following steps:

[0049] S01: Prepare the first main reinforcement 110 and stirrups of the pile body;

[0050] S02: preparing a steel cage 200 and placing the steel cage 200 into a mold for producing pipe piles;

[0051] S03: Install the connecting piece 300 to connect the first main reinforcement 110 and the second main reinforcement 210 through the connecting piece 300;

[0052] S04: pouring concrete into the mold and then forming it by centrifugal tensioning;

[0053] S05: After steaming and curing, demoulding is performed to obtain prefabricated pipe piles.

[0054] In the prefabricated pipe pile produced by the above method, the steel cage 200 is pre-buried in the pile body 100, which can facilitate construction and speed up the construction progress. A connector 300 is provided between the first main reinforcement 110 and the second main reinforcement 210, which improves the pull-out resistance of the prefabricated pipe pile.

[0055] The present invention also provides a construction method for the above-mentioned prefabricated pipe piles, comprising the following steps:

[0056] S100: driving the pipe pile to a predetermined elevation;

[0057] S200: Lowering the pallet assembly to a predetermined elevation; the pallet assembly includes a main rod 600, to which a retractable or expandable pallet 700 is connected.

[0058] Because the support plate 700 connected to the main rod 600 can be contracted or expanded, it can be placed into the pre-embedded steel cage pile. The specific placement method is to first contract the support plate 700, then place the contracted support plate 700 into the pile, and then expand the support plate 700 so that the outer edge of the expanded support plate 700 is in close contact with the inner wall of the pile. This allows the support plate 700 to determine the pouring depth and save concrete materials.

[0059] S300: Using a threading machine, threading is performed on the ends of the first main reinforcement 110, the second main reinforcement 210, and the platform main reinforcement 400;

[0060] S400: Connect the first main reinforcement 110 and the platform main reinforcement 400, and the second main reinforcement 210 and the platform main reinforcement 400 using the steel bar connector 500;

[0061] S500: Pour concrete to form prefabricated pipe piles, steel cages, and foundation concrete to complete the construction.

[0062] like Figure 3 and Figure 4 As shown, the prefabricated pipe piles, steel cage, and pedestal concrete formed by the above-mentioned construction method are more tightly connected, have better integrity, and better pull-out resistance because a connector 300 is provided between the first main reinforcement 110 and the second main reinforcement 210, and the first main reinforcement 110 and the pedestal main reinforcement 400 are connected, and the second main reinforcement 210 and the pedestal main reinforcement 400 are connected by a steel bar connector 500.

[0063] like Figure 5-Figure 9As shown, in certain embodiments, for the pallet assembly in S200, a connecting portion 610 is provided on the circumferential surface of the main rod 600, and a support member 630 for supporting the pallet 700 is provided below the connecting portion 610; the pallet 700 includes a plurality of sub-pallets 720, the inner sides of the sub-pallets 720 are movably connected to the connecting portion 610 so as to be retractable or expandable relative to the main rod 600, and the sub-pallets 720 form the pallet 700 after expansion. Specifically, the inner sides of the sub-pallets 720 are rotatably connected to the connecting portion 610. Furthermore, the connecting portion 610 is annular and surrounds the main rod 600, and a connecting rib 620 is provided between the main rod 600 and the connecting portion 610 to connect the two; a first connecting ring 710 is provided on the inner side of the sub-pallet 720, and the first connecting ring 710 is sleeved on the connecting portion 610. The connecting rib 620 and the main rod 600 can be welded, and the connecting portion 610 and the connecting rib 620 can also be welded. The first connecting ring 710 can rotate on the connecting portion 610, allowing the sub-supporting plate 720 to freely contract or expand. Specifically, there can be four sub-supporting plates 720, and there can be two first connecting rings 710 on the inner side of the sub-supporting plates 720.

[0064] In some embodiments, the sub-support plate 720 is an arc-shaped plate, and the support plate 700 is annular when fully expanded. When the support plate 700 is fully expanded, the outer edge of the support plate 700 just abuts the inner wall of the pile, preventing leakage during subsequent concrete pouring and avoiding waste of raw materials.

[0065] In some embodiments, the support member 630 is annular and has an outer diameter smaller than the outer diameter of the fully expanded support plate 700. The support member 630 provides support for the support plate 700 and seals the gap between the support plate 700 and the main rod 600, preventing subsequent concrete from leaking out of the gap.

[0066] In some embodiments, in order to enhance the strength between the support member 630 and the main rod 600 , the support member 630 is welded to the main rod 600 .

[0067] In a certain embodiment, each sub-pallet 720 is provided with a pull rod 800 for pulling the sub-pallet 720, and the lower end of the pull rod 800 is rotatably connected to the sub-pallet 720. The pull rod 800 pulls or pushes the sub-pallet 720, thereby allowing the sub-pallet 720 to be smoothly contracted or expanded. The provision of the pull rod 800 can facilitate the contraction or expansion of the sub-pallet 720. Specifically, the lower end of the pull rod 800 is provided with a second connecting ring 810, and the upper surface of the sub-pallet 720 is provided with a connecting seat 721, and the second connecting ring 810 is hinged to the connecting seat 721.

[0068] In some embodiments, a cross bar 820 perpendicular to the pull rod 800 is provided at the upper end of the pull rod 800. The cross bar 820 is used to fix the position of the pull rod 800. Specifically, after the sub-support plate 720 is expanded, the bottom of the cross bar 820 is placed on the top of the pipe pile.

[0069] The above is a further detailed description of the present invention in conjunction with specific embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention.

Claims

1. The construction method of prefabricated pipe piles is characterized by: The prefabricated pipe pile comprises a pile body (100) and a steel cage (200) located in a hollow portion of the pile body (100); the pile body (100) comprises a plurality of first main bars (110); the steel cage (200) comprises a plurality of second main bars (210); a connector (300) is provided between the first main bars (110) and the second main bars (210); The construction method of the prefabricated pipe pile comprises the following steps: S100: driving the prefabricated pipe piles to a predetermined elevation; S200: lowering the pallet assembly to a predetermined elevation; the pallet assembly comprises a main rod (600), and the main rod (600) is connected to a retractable or expandable pallet (700); S300: Using a threading machine, threading is performed on the ends of the first main reinforcement (110), the second main reinforcement (210) and the platform main reinforcement (400); S400: Using a steel bar connector (500), the first main reinforcement (110) is connected to the platform main reinforcement (400), and the second main reinforcement (210) is connected to the platform main reinforcement (400); S500: Pour concrete to form prefabricated pipe piles, steel cages, and foundation concrete to complete the construction.

2. The construction method of prefabricated pipe piles according to claim 1, characterized in that: A plurality of the connecting pieces (300) are provided along the length direction of the first main rib (110) and the second main rib (210), and the connecting pieces (300) at the same height are distributed radially.

3. The construction method of prefabricated pipe piles according to claim 1, characterized in that: Both ends of the connecting member (300) are provided with connecting rings (310), and the connecting rings (310) at both ends respectively clamp the first main rib (110) and the second main rib (210).

4. The construction method of prefabricated pipe piles according to claim 1, characterized in that: At least a portion of the first main reinforcement (110) and at least a portion of the second main reinforcement (210) are arranged in a group; the first main reinforcement (110) and the second main reinforcement (210) in the same group are distributed along the radial direction of the pile body (100); and the connecting member (300) connects the first main reinforcement (110) and the second main reinforcement (210) in the same group.

5. The construction method of prefabricated pipe piles according to claim 1, characterized in that: At least a portion of the first main reinforcement (110) and at least a portion of the second main reinforcement (210) are arranged in a group; the first main reinforcement (110) and the second main reinforcement (210) in the same group are distributed along the radial direction of the pile body (100); and the connecting member (300) connects the first main reinforcement (110) and the second main reinforcement (210) in different groups.

6. The construction method of prefabricated pipe piles according to claim 1, characterized in that: Two ends of the connecting piece (300) are respectively welded to the first main reinforcement (110) and the second main reinforcement (210).

7. The construction method of prefabricated pipe piles according to claim 1, characterized in that: The two ends of the connecting member (300) are respectively tied and connected to the first main reinforcement (110) and the second main reinforcement (210).

8. The construction method of prefabricated pipe piles according to claim 1, characterized in that: The main rod (600) is provided with a connecting portion (610) on its circumference, and a supporting member (630) for supporting the support plate (700) is provided below the connecting portion (610); the support plate (700) includes a plurality of sub-support plates (720), the inner sides of the sub-support plates (720) are movably connected to the connecting portion (610) so as to be contractible or expandable relative to the main rod (600), and the sub-support plates (720) form the support plate (700) after expansion.

Images