Tubular pile with steady-state metal cage structure and preparation method of tubular pile

Abstract

The invention relates to the technical field of prefabricated pipe piles, and provides a pipe pile with a steady-state metal cage structure and a preparation method thereof.The steady-state metal cage structure of the pipe pile comprises an outer-layer framework integrally in a spiral shape and an inner-layer framework integrally in a spiral shape and coaxially arranged on the inner side of the outer-layer framework; a plurality of inner-layer main ribs are circumferentially distributed and assembled on the inner-layer framework in a penetrating mode, a plurality of outer-layer main ribs are circumferentially distributed and assembled on the outer-layer framework in a penetrating mode, a plurality of radial connecting mechanisms are arranged on the inner-layer main ribs and the outer-layer main ribs which are adjacent in the radial direction in the axial direction, and a plurality of inner-layer longitudinal rib sets are circumferentially distributed and assembled on the inner-layer framework in a penetrating mode. The outer-layer longitudinal rib sets are circumferentially distributed and assembled on the outer-layer framework in a penetrating mode, and the axes of the inner-layer longitudinal rib sets and the outer-layer longitudinal rib sets which are adjacent in the radial direction are coplanar with the central axis of the outer-layer framework. The safety and stability of the metal cage can be remarkably improved, the production efficiency and economic benefits are improved, and the uniformity and overall performance of tubular pile forming are remarkably improved.

Description

Technical Field

[0001] This application relates to the technical field of precast pipe piles, and particularly to a pipe pile with a steady-state metal cage structure and a preparation method thereof. Background Art

[0002] As a widely used building material, the performance and manufacturing process of the metal cage, which is the core component of the pipe pile, play a crucial role in the overall quality of the pipe pile. In the prior art, the metal cage is usually manufactured by roll welding, that is, the spiral bars are welded to a plurality of main bars distributed in a circle to construct the basic structure of the metal cage.

[0003] In practical applications, the existing metal cage manufacturing methods and structures have the following deficiencies: 1. During the manufacturing process of the pipe pile, the welding points of the metal cage are prone to failure. For example, during centrifugal forming after the concrete is put into the mold, the welding points will be strongly impacted and chemically corroded by the concrete, resulting in a decrease in the strength and stability of the welded parts. Another example is that when the pipe section after pouring slurry is subjected to steam curing, the welding points will be affected by temperature changes, resulting in inevitable stress deformation. The combined effect of these factors makes the structure of the metal cage unstable, which in turn leads to potential safety hazards in the overall structure of the pipe pile, seriously affecting the service life and reliability of the pipe pile.

[0004] 2. The manufacturing cost of the existing metal cage is relatively high. Especially for the metal cage used in long pipe piles, its manufacturing process requires extremely cumbersome roll welding treatment. This process is not only complex to operate, but also requires a large amount of time and labor input, resulting in high process costs and difficult to improve production efficiency. To a certain extent, this restricts the large-scale production and application of pipe piles, especially in construction projects with strict cost control.

[0005] Therefore, how to improve the structural stability of the metal cage while reducing the manufacturing cost has become an urgent technical problem in the current pipe pile manufacturing field. Summary of the Invention

[0006] In view of this, in order to overcome the deficiencies of the prior art, this application aims to provide a pipe pile with a steady-state metal cage structure and a preparation method thereof.

[0007] According to the first aspect of the present application, a pipe pile with a steady-state metal cage structure is provided. The steady-state metal cage structure of the pipe pile includes an outer skeleton that is integrally spiral and an inner skeleton that is integrally spiral and coaxially arranged inside the outer skeleton. A plurality of inner main reinforcement bars are circumferentially distributed and penetrate and are assembled on the inner skeleton, and a plurality of outer main reinforcement bars are circumferentially distributed and penetrate and are assembled on the outer skeleton. A plurality of radial connection mechanisms are axially arranged on the radially adjacent inner main reinforcement bars and outer main reinforcement bars. A plurality of inner longitudinal reinforcement bar groups are circumferentially distributed and penetrate and are assembled on the inner skeleton, and a plurality of outer longitudinal reinforcement bar groups are circumferentially distributed and penetrate and are assembled on the outer skeleton. The axes of the radially adjacent inner longitudinal reinforcement bar groups and outer longitudinal reinforcement bar groups are coplanar with the central axis of the outer skeleton.

[0008] Optionally, in the pipe pile with a steady-state metal cage structure of the present application, the mutually parallel inner main reinforcement bars and outer main reinforcement bars form main reinforcement bar pairs one by one. The axis of the inner main reinforcement bar and the axis of the outer main reinforcement bar in each main reinforcement bar pair are coplanar with the central axis of the inner skeleton.

[0009] Optionally, in the pipe pile with a steady-state metal cage structure of the present application, the radial connection mechanism includes a first connection seat and a second connection seat. A first reserved groove is provided in the middle of one side of the first connection seat. A first groove and a second groove are respectively provided on the first connection seat on both sides of the first reserved groove. A second reserved groove is provided in the middle of one side of the second connection seat. A third groove and a fourth groove are respectively provided on the second connection seat on both sides of the second reserved groove. The first connection seat and the second connection seat are fixedly connected by fasteners. The first reserved groove and the second reserved groove form a reserved hole. The first groove and the third groove form an outer main reinforcement bar connection hole. The second groove and the fourth groove form an inner main reinforcement bar connection hole. The outer main reinforcement bar connection hole matches the outer main reinforcement bar, and the inner main reinforcement bar connection hole matches the inner main reinforcement bar.

[0010] Optionally, in the pipe pile with a steady-state metal cage structure of the present application, the inner longitudinal reinforcement bar group is composed of a first longitudinal reinforcement bar and a second longitudinal reinforcement bar. The second longitudinal reinforcement bar is radially distributed on the inner skeleton outside the first longitudinal reinforcement bar. The axis of the first longitudinal reinforcement bar and the axis of the second longitudinal reinforcement bar in each inner longitudinal reinforcement bar group are coplanar with the central axis of the inner skeleton.

[0011] Optionally, in the pipe pile with a steady-state metal cage structure of the present application, a plurality of inner main reinforcement bar assembly holes are provided on the inner skeleton body of the inner skeleton. The inner main reinforcement bar assembly holes at each position on the inner skeleton body with adjacent pitches correspond one by one and are coaxially arranged. The inner main reinforcement bar assembly hole matches the inner main reinforcement bar.

[0012] Optionally, in the pipe pile with a steady-state metal cage structure of the present application, a plurality of first longitudinal rib assembly holes are provided on the inner layer skeleton body of the inner layer skeleton. A plurality of second longitudinal rib assembly holes are distributed on the inner layer skeleton outside the first longitudinal rib assembly holes. The first longitudinal rib assembly holes at each position on the inner layer skeleton body with adjacent pitches correspond to each other one by one and are coaxial. The second longitudinal rib assembly holes at each position on the inner layer skeleton body with adjacent pitches correspond to each other one by one and are coaxial. The axes of the radially adjacent first longitudinal rib assembly holes and the axes of the second longitudinal rib assembly holes are coplanar with the central axis of the inner layer skeleton. The first longitudinal rib assembly holes match the first longitudinal ribs, and the second longitudinal rib assembly holes match the second longitudinal ribs.

[0013] Optionally, in the pipe pile with a steady-state metal cage structure of the present application, the outer layer longitudinal rib group is composed of a third longitudinal rib and a fourth longitudinal rib. The fourth longitudinal rib is radially distributed on the outer layer skeleton outside the third longitudinal rib. The axes of the third longitudinal ribs and the axes of the fourth longitudinal ribs in each outer layer longitudinal rib group are coplanar with the central axis of the outer layer skeleton.

[0014] Optionally, in the pipe pile with a steady-state metal cage structure of the present application, a plurality of outer main reinforcement assembly holes are provided on the outer layer skeleton body of the outer layer skeleton. The outer diameter main reinforcement assembly holes at each position on the outer layer skeleton body with adjacent pitches correspond to each other one by one and are coaxial. The outer main reinforcement assembly holes match the outer main reinforcements.

[0015] Optionally, in the pipe pile with a steady-state metal cage structure of the present application, a plurality of third longitudinal rib assembly holes are provided on the outer layer skeleton body of the outer layer skeleton. A plurality of fourth longitudinal rib assembly holes are distributed on the outer layer skeleton outside the third longitudinal rib assembly holes. The third longitudinal rib assembly holes at each position on the outer layer skeleton body with adjacent pitches correspond to each other one by one and are coaxial. The fourth longitudinal rib assembly holes at each position on the outer layer skeleton body with adjacent pitches correspond to each other one by one and are coaxial. The axes of the radially adjacent third longitudinal rib assembly holes and the axes of the fourth longitudinal rib assembly holes are coplanar with the central axis of the outer layer skeleton. The third longitudinal rib assembly holes match the third longitudinal ribs, and the fourth longitudinal rib assembly holes match the fourth longitudinal ribs.

[0016] According to the second aspect of the present application, a method for manufacturing the above-mentioned pipe pile with a steady-state metal cage structure is provided. The method includes: Install end molds at both ends of the steady-state metal cage structure, close the mold for the steady-state metal cage structure and install a hole-forming rubber tube; Prepare concrete, fill the prepared concrete into the steady-state metal cage structure after closing the mold for centrifugal molding to obtain a pipe section; Perform steam curing on the pipe section, draw out the hole-forming rubber tube and remove the mold, and thread a steel strand in the hole formed by the hole-forming rubber tube to obtain a pipe pile with a steady-state metal cage structure.

[0017] The pipe pile with a steady-state metal cage structure and its manufacturing method according to the present application have the following beneficial technical effects through comprehensive structural design: 1. Significantly improve the safety and stability of the metal cage. The whole of the present application adopts a mechanical assembly method, enabling the components of the metal cage to be mechanically connected and firmly combined through mechanical means, completely abandoning the traditional welding connection process, and avoiding the failure problems of welding points during the manufacturing process of the pipe pile (such as during centrifugal forming and steam curing after concrete is poured into the mold) due to impact, corrosion, or temperature changes. Fundamentally, the failure risk of welding points is eliminated, significantly improving the stability and reliability of the metal cage structure.

[0018] 2. Simple, precise, and highly efficient assembly process. The assembly method of the metal cage in the present application is simple and precise. The assembly process does not require complex welding operations, reducing the dependence on professional welding equipment and skilled welders, and lowering the process difficulty and operation risk. At the same time, the mechanical assembly has higher precision, which can ensure that the connections between the components of the metal cage are tighter and more uniform, thereby improving the overall structural performance of the metal cage. In addition, the high efficiency of the assembly process significantly increases the production speed of the metal cage, significantly reducing the manufacturing cost, especially suitable for the manufacturing of metal cages for large-length pipe piles, and improving production efficiency and economic benefits.

[0019] 3. Significantly improve the uniformity and overall performance of the pipe pile during forming. Due to the enhanced structural stability of the metal cage, the present application can significantly improve the uniformity of the pipe pile during the forming process. During the processes of concrete pouring into the mold, centrifugal forming, and steam curing, the metal cage can better maintain its structural form, avoiding deformation or displacement caused by the failure of welding points. This enables the concrete to be more evenly distributed inside the pipe pile, thereby improving the overall strength and stability of the pipe pile. Ultimately, the pipe pile can better withstand various loads during use, extend its service life, and enhance the safety and reliability of the building structure. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 FIG. is an exemplary diagram of the steady-state metal cage structure of a pipe pile with a steady-state metal cage structure according to an embodiment of the present application; Figure 2 FIG. is another exemplary diagram of the steady-state metal cage structure according to an embodiment of the present application; Figure 3 FIG. is an exemplary diagram of the structure of the radial connection mechanism according to an embodiment of the present application; Figure 4 It is a first partial exemplary view of a steady-state metal cage structure according to an embodiment of the present application; Figure 5 It is a partial structural exemplary view of an inner skeleton according to an embodiment of the present application; Figure 6 It is a second partial exemplary view of a steady-state metal cage structure according to an embodiment of the present application; Figure 7 It is a partial structural exemplary view of an outer skeleton according to an embodiment of the present application; Figure 8 It is a third partial exemplary view of a steady-state metal cage structure according to an embodiment of the present application; Figure 9 It is a structural exemplary view of an end mold used in a preparation method of a pipe pile with a steady-state metal cage structure according to an embodiment of the present application; Figure 10 It is a sectional structural exemplary view of an end mold used in a preparation method of a pipe pile with a steady-state metal cage structure according to an embodiment of the present application; In the figure, 1 - outer skeleton, 2 - inner skeleton, 3 - inner main reinforcement, 4 - outer main reinforcement, 5 - radial connection mechanism, 6 - inner longitudinal reinforcement group, 7 - outer longitudinal reinforcement group, 11 - outer skeleton body, 12 - outer main reinforcement assembly hole, 13 - third longitudinal reinforcement assembly hole, 14 - fourth longitudinal reinforcement assembly hole, 21 - inner skeleton body, 22 - inner main reinforcement assembly hole, 23 - first longitudinal reinforcement assembly hole, 24 - second longitudinal reinforcement assembly hole, 51 - first connection seat, 511 - first reserved groove, 512 - first groove body, 513 - second groove body, 52 - second connection seat, 521 - second reserved groove, 522 - third groove body, 523 - fourth groove body, 53 - fastener, 61 - first longitudinal reinforcement, 62 - second longitudinal reinforcement, 71 - third longitudinal reinforcement, 72 - fourth longitudinal reinforcement, 8 - end mold, 81 - end mold body, 82 - mold reserved hole, 83 - first hole body, 84 - second hole body. Detailed implementation manners

[0022] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0023] It should be noted that, without conflict, the following embodiments and the features in the embodiments may be combined with each other; and all other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0024] Note that the following description pertains to various aspects of embodiments within the scope of the appended claims. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this disclosure, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement a device and / or practice a method. Additionally, this device can be implemented and this method can be practiced using other structures and / or functionality in addition to one or more of the aspects set forth herein.

[0025] Figure 1 FIG. is an exemplary diagram of the steady-state metal cage structure of a pipe pile having a steady-state metal cage structure according to an embodiment of the present application, as Figure 1 shown. In this embodiment, the steady-state metal cage structure includes an outer skeleton 1, an inner skeleton 2, a plurality of inner main reinforcement bars 3, a plurality of outer main reinforcement bars 4, a plurality of radial connection mechanisms 5, a plurality of inner longitudinal reinforcement bar groups 6, and a plurality of outer longitudinal reinforcement bar groups 7.

[0026] Figure 2 FIG. is another exemplary diagram of the steady-state metal cage structure according to an embodiment of the present application, as Figure 1 and Figure 2 shown. In this embodiment, the outer skeleton 1 is integrally spiral, the inner skeleton 2 is integrally spiral, the inner skeleton 2 is coaxially arranged inside the outer skeleton 1, a plurality of inner main reinforcement bars 3 are circumferentially distributed and penetrated and assembled on the inner skeleton 2, and a plurality of outer main reinforcement bars 4 are circumferentially distributed and penetrated and assembled on the outer skeleton 1; the inner main reinforcement bars 3 and the outer main reinforcement bars 4 that are parallel to each other form main reinforcement bar pairs one by one, and the axis of the inner main reinforcement bar 3 and the axis of the outer main reinforcement bar 4 in each main reinforcement bar pair are coplanar with the central axis of the inner skeleton 2. In practical applications, the inner main reinforcement bars 3 and the outer main reinforcement bars 4 respectively improve the stability of the inner skeleton 2 and the outer skeleton 1. When the metal cage is filled with concrete, the circumferentially distributed inner main reinforcement bars 3 and outer main reinforcement bars 4 can significantly improve the overall strength and stability of the pipe pile. The setting of the main reinforcement bar pairs can improve the structural stability and uniformity of the steady-state metal cage structure in this embodiment. During subsequent centrifugal forming, a more uniform and stable structure can support a greater centrifugal rate, improving the centrifugal efficiency while obtaining a more favorable forming effect.

[0027] As Figure 1 and Figure 2 shown, a plurality of radial connection mechanisms 5 are axially arranged on the radially adjacent inner main reinforcement bars 3 and outer main reinforcement bars 4, that is, a plurality of radial connection mechanisms 5 are arranged on each main reinforcement bar pair.

[0028] Figure 3The structural example diagram of the radial connection mechanism according to an embodiment of the present application is as follows: Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the radial connection mechanism 5 includes a first connection seat 51 and a second connection seat 52. A first reserved groove 511 is provided in the middle of one side of the first connection seat 51. A first groove 512 and a second groove 513 are respectively provided on the first connection seat 51 on both sides of the first reserved groove 511. A second reserved groove 521 is provided in the middle of one side of the second connection seat 52. A third groove 522 and a fourth groove 523 are respectively provided on the second connection seat 52 on both sides of the second reserved groove 521. The first connection seat 51 and the second connection seat 52 are fixedly connected by a fastener 53. The first reserved groove 511 and the second reserved groove 521 form a reserved hole. The first groove 512 and the third groove 522 form an outer main reinforcement connection hole. The second groove 513 and the fourth groove 523 form an inner main reinforcement connection hole. The outer main reinforcement connection hole matches the outer main reinforcement 4, and the inner main reinforcement connection hole matches the inner main reinforcement 3. In this embodiment, the cross-sections of the outer main reinforcement 4 and the inner main reinforcement 3 are circular. In practical applications, the cross-sections of the outer main reinforcement 4 and the inner main reinforcement 3 can also be other shapes such as square and oval. The present application does not limit this. It should be noted that in this embodiment, the diameters of the outer main reinforcement 4 and the inner main reinforcement 3 are equal. Correspondingly, the sizes of the outer main reinforcement connection hole and the inner main reinforcement connection hole are also the same. In practical applications, the diameters of the outer main reinforcement 4 and the inner main reinforcement 3 can also be set differently according to the actual application scenario. For example, the diameter of the outer main reinforcement 4 is greater than the diameter of the inner main reinforcement 3, or the diameter of the outer main reinforcement 4 is less than the diameter of the inner main reinforcement 3. At this time, the sizes of the outer main reinforcement connection hole and the inner main reinforcement connection hole are also different accordingly. The setting of the radial connection mechanism 5 enables the inner main reinforcement 3 and the outer main reinforcement 4 adjacent in the radial direction to be tightly connected, so that the inner skeleton 2 and the outer skeleton 1 are tightly connected, further improving the radial stability of the metal cage.

[0029] Figure 4 The first partial example diagram of the steady-state metal cage structure according to an embodiment of the present application is as follows: Figure 1 , Figure 2 , 4 As shown, in this embodiment, multiple inner longitudinal bar groups 6 are circumferentially distributed and assembled through the inner skeleton 2. The inner longitudinal bar group 6 is composed of a first longitudinal bar 61 and a second longitudinal bar 62. The second longitudinal bar 62 is radially distributed on the inner skeleton 2 outside the first longitudinal bar 61. As an optional example, the axis of the first longitudinal bar 61 and the axis of the second longitudinal bar 62 in each inner longitudinal bar group 6 are coplanar with the central axis of the inner skeleton 2.

[0030] Figure 5 The partial structural example diagram of the inner skeleton according to an embodiment of the present application is as follows: Figures 1 to 5As shown, in this embodiment, a plurality of inner main - reinforcement assembly holes 22 are provided on the inner - frame body 21 of the inner frame 2. The inner main - reinforcement assembly holes 22 at various positions on the inner - frame body 21 with adjacent pitches correspond to each other one by one and are co - axial. The inner main - reinforcement assembly hole 22 matches the inner main reinforcement 3. A plurality of first longitudinal - reinforcement assembly holes 23 are provided on the inner - frame body 21 of the inner frame 2. A plurality of second longitudinal - reinforcement assembly holes 24 are distributed on the inner frame 2 outside the first longitudinal - reinforcement assembly holes 23. The first longitudinal - reinforcement assembly holes 23 at various positions on the inner - frame body 21 with adjacent pitches correspond to each other one by one and are co - axial. The second longitudinal - reinforcement assembly holes 24 at various positions on the inner - frame body 21 with adjacent pitches correspond to each other one by one and are co - axial. The axes of the radially adjacent first longitudinal - reinforcement assembly holes 23 and the axes of the second longitudinal - reinforcement assembly holes 24 are coplanar with the central axis of the inner frame 2.

[0031] As Figures 1 to 5 shown, in this embodiment, the inner main reinforcement 3 is assembled in the inner main - reinforcement assembly hole 22 of the inner frame 2, the first longitudinal reinforcement 61 is assembled in the first longitudinal - reinforcement assembly hole 23 of the inner frame 2, and the second longitudinal reinforcement 62 is assembled in the second longitudinal - reinforcement assembly hole 24 of the inner frame 2.

[0032] In this embodiment, a plurality of circumferentially distributed first longitudinal reinforcements 61 and a plurality of circumferentially distributed second longitudinal reinforcements 62 can significantly increase the structural stability of the inner frame 2. When the concrete is centrifugally formed during mold filling, the plurality of first longitudinal reinforcements 61 form a first longitudinal - reinforcement network layer, and the plurality of second longitudinal reinforcements 62 form a second longitudinal - reinforcement network layer. The first longitudinal - reinforcement network layer and the second longitudinal - reinforcement network layer can make the concrete in the mold cavity disperse more evenly during centrifugal - forming filling, avoiding material segregation and filling - forming defects. In practical applications, the number of the first longitudinal reinforcements 61 and the second longitudinal reinforcements 62 can be specifically set according to the actual application scenario. For example, when using concrete materials with smaller particle sizes for centrifugal forming, the number of the first longitudinal reinforcements 61 and the second longitudinal reinforcements 62 can be increased, that is, the density of the first longitudinal - reinforcement network layer and the second longitudinal - reinforcement network layer is increased; when using concrete materials with larger particle sizes for centrifugal forming, the number of the first longitudinal reinforcements 61 and the second longitudinal reinforcements 62 can be reduced, that is, the density of the first longitudinal - reinforcement network layer and the second longitudinal - reinforcement network layer is reduced.

[0033] Figure 6 For the second partial example diagram of the steady - state metal cage structure according to the embodiment of the present application, as Figure 1 、 Figure 2 and Figure 6As shown in the figure, in this embodiment, multiple outer longitudinal rib groups 7 are circumferentially distributed and penetrate and are assembled on the outer skeleton 1. The outer longitudinal rib group 7 is composed of a third longitudinal rib 71 and a fourth longitudinal rib 72. The fourth longitudinal rib 72 is radially distributed on the outer skeleton 1 outside the third longitudinal rib 71. As an optional example, the axis of the third longitudinal rib 71 and the axis of the fourth longitudinal rib 72 in each outer longitudinal rib group 7 are coplanar with the central axis of the outer skeleton 1.

[0034] Figure 7 FIG. is a partial structural example diagram of the outer skeleton according to an embodiment of the present application. As Figures 1 to 7 shown, in this embodiment, a plurality of outer main rib assembly holes 12 are provided on the outer skeleton body 11 of the outer skeleton 1. The outer diameter main rib assembly holes 12 at each position on the outer skeleton body 11 with adjacent pitches correspond to each other one by one and are coaxial. The outer main rib assembly hole 12 matches the outer main rib 4. A plurality of third longitudinal rib assembly holes 13 are provided on the outer skeleton body 11 of the outer skeleton 1. A plurality of fourth longitudinal rib assembly holes 14 are distributed on the outer skeleton 1 outside the third longitudinal rib assembly holes 13. The third longitudinal rib assembly holes 13 at each position on the outer skeleton body 11 with adjacent pitches correspond to each other one by one and are coaxial. The fourth longitudinal rib assembly holes 14 at each position on the outer skeleton body 11 with adjacent pitches correspond to each other one by one and are coaxial. The axes of the radially adjacent third longitudinal rib assembly holes 13 and the axes of the fourth longitudinal rib assembly holes 14 are coplanar with the central axis of the outer skeleton 1.

[0035] As Figures 1 to 7 shown, in this embodiment, the outer main rib 4 is assembled in the outer main rib assembly hole 12 of the outer skeleton 1, the third longitudinal rib 71 is assembled in the third longitudinal rib assembly hole 13 of the outer skeleton 1, and the fourth longitudinal rib 72 is assembled in the fourth longitudinal rib assembly hole 14 of the outer skeleton 1.

[0036] In this embodiment, multiple circumferentially distributed third longitudinal ribs 71 and multiple circumferentially distributed fourth longitudinal ribs 72 can significantly increase the structural stability of the outer skeleton 1. When the concrete is centrifugally formed into the mold, multiple third longitudinal ribs 71 form a third longitudinal rib network layer, and multiple fourth longitudinal ribs 72 form a fourth longitudinal rib network layer. The third longitudinal rib network layer and the fourth longitudinal rib network layer can further make the concrete in the inner cavity of the mold more evenly dispersed during centrifugal forming and filling, avoiding material segregation and filling and forming defects. In practical applications, the number of the third longitudinal ribs 71 and the fourth longitudinal ribs 72 can be specifically set according to the actual application scenario. For example, when using concrete materials with smaller particle sizes for centrifugal forming, the number of the third longitudinal ribs 71 and the fourth longitudinal ribs 72 can be increased, that is, the density of the third longitudinal rib network layer and the fourth longitudinal rib network layer is increased; when using concrete materials with larger particle sizes for centrifugal forming, the number of the third longitudinal ribs 71 and the fourth longitudinal ribs 72 can be reduced, that is, the density of the first longitudinal rib network layer and the second longitudinal rib network layer is reduced. It should be noted that in this embodiment, when the centrifugal forming and filling enter the high-speed stage, the first longitudinal rib network layer and the second longitudinal rib network layer form an inner network layer, and the third longitudinal rib network layer and the fourth longitudinal rib network layer form an outer network layer, which is conducive to evenly distributing the concrete material between the inner network layer and the outer network layer, so as to more efficiently form the pipe wall part of the pipe pile.

[0037] Figure 8 FIG. is a third partial exemplary view of a steady-state metal cage structure according to an embodiment of the present application, as Figure 8 shown. As an optional example, in the embodiment of the present application, among the radially adjacent inner longitudinal rib groups 6 and outer longitudinal rib groups 7, the axes of the first longitudinal rib 61, the second longitudinal rib 62, the third longitudinal rib 71, and the fourth longitudinal rib 72 are coplanar with the central axis of the outer skeleton 1.

[0038] The embodiment of the present application provides a method for manufacturing a pipe pile with a steady-state metal cage structure.

[0039] Figure 9 FIG. is a structural exemplary view of an end mold used in a method for manufacturing a pipe pile with a steady-state metal cage structure according to an embodiment of the present application, Figure 10 FIG. is a sectional structural exemplary view of an end mold used in a method for manufacturing a pipe pile with a steady-state metal cage structure according to an embodiment of the present application, as Figure 9 and Figure 10As shown in the figure, the end mold 8 adopted in this embodiment is integrally circular. On the end mold body 81, a plurality of mold reserved holes 82, a plurality of first hole bodies 83, and a plurality of second hole bodies 84 are sequentially arranged in a circumferential direction from the inside to the outside. The mold reserved holes 82 correspond one-to-one with the reserved holes of the radial connection mechanism 5. The first hole bodies 83 match the inner main reinforcements 3, and the second hole bodies 84 match the outer main reinforcements 4. In this embodiment, the mold reserved holes 82 and the reserved holes of the radial connection mechanism 5 are used to install the hole-forming rubber tubes. The first hole bodies 83 are non-through holes, which are used to install and fix the ends of the inner main reinforcements 3. The second hole bodies 84 are non-through holes, which are used to install and fix the ends of the outer main reinforcements 4.

[0040] The preparation method includes the following steps: Press Figures 1 to 8 Assemble to obtain the steady-state metal cage structure of the embodiment of the present application; Install end molds as shown in Figure 9 and Figure 10 at both ends of the steady-state metal cage structure, close the mold for the steady-state metal cage structure and install the hole-forming rubber tubes; Configure concrete according to the application scenario, fill the configured concrete into the steady-state metal cage structure after closing the mold for centrifugal molding to obtain a pipe section; Perform steam curing on the pipe section, extract the hole-forming rubber tubes and remove the mold, and thread steel strands through the holes formed by the hole-forming rubber tubes to obtain a pipe pile with a steady-state metal cage structure.

[0041] The pipe pile with a steady-state metal cage structure and the preparation method of the embodiment of the present application have the following beneficial technical effects through comprehensive structural design: 1. Significantly improve the safety and stability of the metal cage. The whole of the present application adopts a mechanical assembly method, so that each component of the metal cage is mechanically connected and firmly combined through mechanical connection, completely abandoning the traditional welding connection process, avoiding the failure problems of welding points during the manufacturing process of the pipe pile (such as centrifugal molding and steam curing after concrete is put into the mold) due to impact, corrosion or temperature change, fundamentally eliminating the failure risk of welding points, and significantly improving the stability and reliability of the metal cage structure.

[0042] 2. The assembly is simple, accurate and the process is efficient. The assembly method adopted by the metal cage of the present application is simple and accurate. The assembly process does not require complex welding operations, reduces the dependence on professional welding equipment and skilled welders, and reduces the process difficulty and operation risk. At the same time, the mechanical assembly has higher precision, which can ensure that the connection between the components of the metal cage is tighter and more uniform, thereby improving the overall structural performance of the metal cage. In addition, the high efficiency of the assembly process greatly improves the production speed of the metal cage, significantly reduces the manufacturing cost, is especially suitable for the manufacture of metal cages for large-length pipe piles, and improves the production efficiency and economic benefits.

[0043] 3. Significantly improve the uniformity and overall performance of pipe pile forming. Due to the enhanced structural stability of the metal cage, the present application can significantly improve the uniformity of pipe piles during the forming process. In the processes of concrete pouring into the mold, centrifugal forming, and steam curing, etc., the metal cage can better maintain its structural form, avoiding deformation or displacement caused by the failure of welding points. This enables the concrete to be more evenly distributed inside the pipe pile, thereby improving the overall strength and stability of the pipe pile. Ultimately, the pipe pile can better withstand various loads during use, extend its service life, and enhance the safety and reliability of the building structure.

[0044] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A pipe pile with a stable metal cage structure, characterized in that: The stable metal cage structure of the pipe pile includes an outer skeleton that is spiral-shaped as a whole and an inner skeleton that is spiral-shaped as a whole and is coaxially arranged on the inner side of the outer skeleton. A plurality of inner main reinforcements are circumferentially distributed and installed through the inner skeleton. A plurality of outer main reinforcements are circumferentially distributed and installed through the outer skeleton. A plurality of radial connecting mechanisms are axially arranged on radially adjacent inner main reinforcements and outer main reinforcements. A plurality of inner longitudinal reinforcement groups are circumferentially distributed and installed through the inner skeleton. A plurality of outer longitudinal reinforcement groups are circumferentially distributed and installed through the outer skeleton. The axes of radially adjacent inner longitudinal reinforcement groups and outer longitudinal reinforcement groups are coplanar with the central axis of the outer skeleton.

2. The pipe pile with a stable metal cage structure according to claim 1, characterized in that: The inner main reinforcements and the outer main reinforcements which are parallel to each other correspond to each other to form main reinforcement pairs. The axis of the inner main reinforcements and the axis of the outer main reinforcements in each main reinforcement pair are coplanar with the central axis of the inner skeleton.

3. The pipe pile with a stable metal cage structure according to claim 1, characterized in that: The radial connection mechanism includes a first connection seat and a second connection seat, a first reserved groove is arranged in the middle of one side of the first connection seat, a first groove body and a second groove body are respectively arranged on the first connection seat on both sides of the first reserved groove, a second reserved groove is arranged in the middle of one side of the second connection seat, a third groove body and a fourth groove body are respectively arranged on the second connection seat on both sides of the second reserved groove, the first connection seat is fixedly connected with the second connection seat by fasteners, the first reserved groove and the second reserved groove constitute a reserved hole, the first groove body and the third groove body constitute an outer main reinforcement connection hole, the second groove body and the fourth groove body constitute an inner main reinforcement connection hole, the outer main reinforcement connection hole matches the outer main reinforcement, and the inner main reinforcement connection hole matches the inner main reinforcement.

4. The pipe pile with a stable metal cage structure according to claim 1, characterized in that: The inner longitudinal rib group is composed of a first longitudinal rib and a second longitudinal rib. The second longitudinal rib is radially distributed on the inner skeleton outside the first longitudinal rib. The axis of the first longitudinal rib and the axis of the second longitudinal rib in each inner longitudinal rib group are coplanar with the central axis of the inner skeleton.

5. The pipe pile with a stable metal cage structure according to claim 1, characterized in that: The inner layer skeleton body of the inner layer skeleton is provided with a plurality of inner layer main reinforcement assembly holes, the inner layer main reinforcement assembly holes at each position on the inner layer skeleton body of adjacent pitches correspond to each other and are coaxial, and the inner layer main reinforcement assembly holes match the inner layer main reinforcement.

6. The pipe pile with a stable metal cage structure according to claim 1, characterized in that: A plurality of first longitudinal rib assembly holes are arranged on the inner layer skeleton body of the inner layer skeleton, and a plurality of second longitudinal rib assembly holes are distributed on the inner layer skeleton outside the first longitudinal rib assembly holes. The first longitudinal rib assembly holes at each position on the inner layer skeleton body of adjacent pitches correspond one to one and are coaxial, and the second longitudinal rib assembly holes at each position on the inner layer skeleton body of adjacent pitches correspond one to one and are coaxial, the axes of the radially adjacent first longitudinal rib assembly holes and the axes of the second longitudinal rib assembly holes are coplanar with the central axis of the inner layer skeleton, the first longitudinal rib assembly holes match the first longitudinal ribs, and the second longitudinal rib assembly holes match the second longitudinal ribs.

7. The pipe pile with a stable metal cage structure according to claim 1, characterized in that: The outer longitudinal rib group is composed of a third longitudinal rib and a fourth longitudinal rib. The fourth longitudinal rib is radially distributed on the outer frame outside the third longitudinal rib. The axis of the third longitudinal rib and the axis of the fourth longitudinal rib in each outer longitudinal rib group are coplanar with the central axis of the outer frame.

8. The pipe pile with a stable metal cage structure according to claim 1, characterized in that: The outer layer skeleton body of the outer layer skeleton is provided with a plurality of outer layer main reinforcement assembly holes, the outer diameter main reinforcement assembly holes at each position on the outer layer skeleton body of adjacent pitches correspond to each other and are coaxial, and the outer layer main reinforcement assembly holes match the outer layer main reinforcement.

9. The pipe pile with a stable metal cage structure according to claim 1, characterized in that: A plurality of third longitudinal rib assembly holes are arranged on the outer layer skeleton body of the outer layer skeleton, and a plurality of fourth longitudinal rib assembly holes are distributed on the outer layer skeleton outside the third longitudinal rib assembly holes. The third longitudinal rib assembly holes at each position on the outer layer skeleton body of adjacent pitches correspond one to one and are coaxial, and the fourth longitudinal rib assembly holes at each position on the outer layer skeleton body of adjacent pitches correspond one to one and are coaxial, the axes of the radially adjacent third longitudinal rib assembly holes and the axes of the fourth longitudinal rib assembly holes are coplanar with the central axis of the outer layer skeleton, the third longitudinal rib assembly holes match the third longitudinal ribs, and the fourth longitudinal rib assembly holes match the fourth longitudinal ribs.

10. A method for preparing a pipe pile with a stable metal cage structure according to any one of claims 1 to 9, characterized in that: The method comprises: Install end molds at both ends of the stable metal cage structure, close the mold of the stable metal cage structure and install the hole-forming rubber tube; Concrete is prepared, and the prepared concrete is filled into the molded stable metal cage structure for centrifugal molding to obtain a pipe segment; The pipe joint is steam cured, the hole-forming rubber tube is pulled out and the mold is removed, and steel strands are passed through the hole formed by the hole-forming rubber tube to obtain a pipe pile with a stable metal cage structure.

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