Prestressed pipe pile

Abstract

The utility model discloses a prestressed pipe pile, including the pile body, at least one flange component and the stability part, the pile body is cylindrically arranged, and is along the extension setting of up and down direction, is used for inserting in the soil, including the first pile section above the soil surface and the second pile section below the soil surface, flange component is located the outer periphery of second pile section, and each flange component includes a plurality of flanges, and a plurality of flanges are spaced distribution along the circumference of the pile body, the stability part includes the stability main part, and the stability main part is disc -shaped setting, and is set in the outer periphery of the pile body, and is located the connecting place of first pile section and second pile section, and is pressed and is established on the soil surface, thus, increase the frictional force end resistance between the pile body and the soil body, improve the stability of prestressed pipe pile, protect the soil around the pile body not to be washed away by the external force such as water flow, and under the action of bigger wave and wind can stabilize the pile body, avoid the prestressed pipe pile to one side inclination, reduce the cost.

Description

Technical Field

[0001] This utility model relates to the field of pile foundation technology, specifically to a prestressed pipe pile. Background Technology

[0002] In geological conditions with thick silty soil layers in open water (such as rivers, lakes, and seas), prestressed pipe piles or prestressed bamboo-joint piles are often used as foundation pile types for buildings and structures. With the development of industries such as offshore photovoltaics, the pile foundations of such structures are often located in silty soil. The pile foundations must have sufficient vertical and horizontal bearing capacity. Open water surfaces (especially the sea) have large waves and winds, and the impact of wave forces and wind loads on the pile foundations of buildings and structures cannot be ignored. In silty soil, pipe piles usually need to be very long to meet the vertical bearing capacity requirements, and their stability is not high, the cost is very high, and under the action of water flow, the soil around the pile is easily lost, further reducing stability. Utility Model Content

[0003] The main purpose of this utility model is to propose a prestressed pipe pile, which aims to solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model proposes a prestressed pipe pile, comprising: The pile body is cylindrical and extends vertically for insertion into the soil, including a first pile segment above the soil surface and a second pile segment below the soil surface. At least one flange assembly is disposed on the outer periphery of the second pile segment, each flange assembly including a plurality of flanges, and the plurality of flanges are distributed at circumferential intervals along the pile body; and, The stabilization component includes a stabilization body, which is disc-shaped and fitted onto the outside of the pile body, located at the connection between the first pile segment and the second pile segment, and pressed onto the soil surface.

[0005] Optionally, the stabilization component further includes a protective casing, which is sleeved on the outside of the pile body and located on the upper side of the stabilization body, with the lower end of the protective casing fixedly connected to the stabilization body.

[0006] Optionally, the stabilizing component further includes a disc wing, which is disposed around the periphery of the stabilizing body and extends downward below the soil surface.

[0007] Optionally, the inner peripheral wall of the disc is gradually widened from its upper end to its lower end.

[0008] Optionally, at least three lifting rings are embedded inside the stabilization body, and the three lifting rings are distributed at intervals along the circumference of the stabilization body.

[0009] Optionally, multiple flange assemblies are provided, and the multiple flange assemblies are distributed at intervals along the vertical direction.

[0010] Optionally, each of the flanges is plate-shaped and extends along the vertical direction, and the end of the flange away from the pile body is provided with a toothed portion, which is serrated.

[0011] Optionally, each of the flange assemblies includes four flanges.

[0012] In the technical solution of this utility model, the pile body is cylindrical. The first pile segment above the soil surface has a circular cross-section, which minimizes the wind load shape coefficient and wave load compared to other cross-section shapes, without increasing the horizontal load. The second pile segment below the soil surface is fitted with flanges, increasing the pile body's circumference and end cross-sectional area. This increases the end resistance of the friction between the pile body and the soil, improving the stability and bearing capacity of the prestressed pipe pile. Furthermore, it makes the pile less prone to rolling on the ground or transport vehicles, facilitating transportation. Furthermore, the prestressed concrete pipe pile is also fitted with a stabilizing component, which can limit the horizontal displacement and rotation of the pile body, further improving the stability of the prestressed concrete pipe pile, protecting the soil around the pile body from being washed away by external forces such as water flow, and stabilizing the pile body under the action of large waves and wind, preventing the prestressed concrete pipe pile from tilting to one side; in addition, by setting the flange and the stabilizing component, the length of the pile body does not need to be designed to be too long to meet the vertical bearing capacity and horizontal bearing capacity requirements, maintain the long-term stability of the pile body, and reduce costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0014] Figure 1 A structural schematic diagram of an embodiment of the prestressed pipe pile provided by this utility model; Figure 2 for Figure 1 Sectional view along the middle AA; Figure 3 for Figure 1 A sectional view along the middle edge BB; Figure 4 for Figure 1 A schematic diagram of the structure of the medium-dimensional stabilizer.

[0015] Explanation of icon numbers:

[0016] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0019] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0020] In geological conditions with thick silty soil layers in open water (such as rivers, lakes, and seas), prestressed pipe piles or prestressed bamboo-joint piles are often used as foundation pile types for buildings and structures. With the development of industries such as offshore photovoltaics, the pile foundations of such structures are often located in silty soil. The pile foundations must have sufficient vertical and horizontal bearing capacity. Open water surfaces (especially the sea) have large waves and winds, and the impact of wave forces and wind loads on the pile foundations of buildings and structures cannot be ignored. In silty soil, pipe piles usually need to be very long to meet the vertical bearing capacity requirements, and their stability is not high, the cost is very high, and under the action of water flow, the soil around the pile is easily lost, further reducing stability.

[0021] In view of this, the present invention provides a prestressed pipe pile 100. Figures 1 to 4 An embodiment of the prestressed pipe pile 100 provided by this utility model.

[0022] Please see Figures 1 to 4 The prestressed concrete pipe pile 100 includes a pile body 1, at least one flange assembly, and a stabilizing component 2. The pile body 1 is cylindrical and extends vertically for insertion into the soil 200. It includes a first pile segment 11 above the soil 200 surface and a second pile segment 12 below the soil 200 surface. The flange assembly is located on the outer periphery of the second pile segment 12. Each flange assembly includes multiple flanges 3, which are spaced apart circumferentially along the pile body 1. The stabilizing component 2 includes a stabilizing body 21, which is disc-shaped and fitted onto the outside of the pile body 1. It is located at the connection between the first pile segment 11 and the second pile segment 12 and is pressed against the soil 200 surface.

[0023] In this utility model's technical solution, the pile body 1 is cylindrical. The first pile segment 11 above the soil 200mm surface has a circular cross-section, which minimizes wind load shape coefficient and wave load compared to other cross-section shapes, without increasing horizontal load. Furthermore, the second pile segment 12 below the soil 200mm surface is fitted with the flange 3, increasing the perimeter and end cross-sectional area of ​​the pile body 1. This increases the end resistance of the frictional force between the pile body 1 and the soil, improving the stability and bearing capacity of the prestressed pipe pile 100. It also makes the pile body 1 less prone to rolling on the ground or transport vehicles, facilitating transportation. Furthermore, the pile body 1 is also fitted with the stabilizing component 2, which can limit the horizontal displacement and rotation of the pile body 1, further improving the stability of the prestressed pipe pile 100, protecting the soil 200 around the pile body 1 from being washed away by external forces such as water flow, and stabilizing the pile body 1 under the action of large waves and wind, preventing the prestressed pipe pile 100 from tilting to one side; in addition, by setting the flange 3 and the stabilizing component 2, the length of the pile body 1 does not need to be designed to be too long to meet the vertical bearing capacity and horizontal bearing capacity requirements, maintain the long-term stability of the pile body 1, and reduce costs.

[0024] It should be noted that in this utility model, the number of flanges 3 in the flange assembly is not limited, and can be two, three, four, or five, etc. Specifically, in one embodiment of this utility model, each flange assembly includes four flanges 3, which can increase the stability and bearing capacity of the pile body 1, meet the production demolding requirements, and reduce production costs.

[0025] For further details, please refer to Figure 1 and Figure 4The stabilizing component 2 also includes a protective sleeve 22, which is sleeved on the outside of the pile body 1 and located on the upper side of the stabilizing body 21. The lower end of the protective sleeve 22 is fixedly connected to the stabilizing body 21 to improve the connection stability between the stabilizing component 2 and the pile body 1.

[0026] For details, please refer to Figure 1 and Figure 4 The stabilizing component 2 further includes a flange 23, which is located around the periphery of the stabilizing body 21 and extends downwards below the soil surface 200. Thus, during hoisting of the stabilizing component 2, the flange 3 can embed itself into the soil under its own weight or with a slight external force, increasing the friction between the stabilizing component 2 and the soil 200, thereby further improving the stability of the prestressed concrete pile 100.

[0027] For further details, please refer to Figures 1 to 4 The inner peripheral wall of the disc 23 gradually expands from its upper end to its lower end, which facilitates the hoisting and placement of the stabilizing component 2 after the pile body 1 is driven into place, and improves the stability of the prestressed pipe pile 100.

[0028] For details, please refer to Figure 1 and Figure 4 At least three lifting rings 24 are embedded in the stabilization body 21. The three lifting rings 24 are distributed at intervals along the circumference of the stabilization body 21, which facilitates the hoisting of the stabilization component 2 and ensures uniform force distribution, thereby achieving stable placement.

[0029] For details, please refer to Figure 1 The flange assembly is provided in multiple ways, and the multiple flange assemblies are distributed at intervals along the vertical direction to increase the end resistance of the friction between the prestressed pipe pile 100 and the soil 200, thereby further improving the stability of the prestressed pipe pile 100.

[0030] More specifically, in one embodiment of the present invention, the flanges 3 of the plurality of flange assemblies are arranged in a one-to-one correspondence.

[0031] For details, please refer to Figure 1 Each of the flanges 3 is plate-shaped and extends along the vertical direction. The end of the flange 3 away from the pile body 1 is provided with a tooth 31, which is serrated. In this way, the mechanical interlocking force between the prestressed pipe pile 100 and the soil 200 can be increased, thereby improving the bearing capacity of the prestressed pipe pile 100.

[0032] In the prestressed pipe pile 100 provided by this utility model, by setting the flange 3, and after performance testing, the bearing capacity characteristic value is significantly improved compared with ordinary pipe piles with the same pile length and diameter. The improvement in its side resistance and end resistance is shown in the table below:

[0033] Among them, the side resistance of ordinary prestressed concrete pipe piles with a diameter of 800 accounts for 70%, and the end resistance accounts for 30%. However, the vertical compressive bearing capacity characteristic value of the prestressed pipe pile 100 provided by this utility model is increased by 38.6%×0.7+8.3%×0.3=29.5%, the vertical tensile bearing capacity is increased by 38.6%, and the horizontal bearing capacity is increased by 30%.

[0034] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A prestressed pipe pile, characterized in that, The prestressed pipe piles include: The pile body is cylindrical and extends vertically for insertion into the soil, including a first pile segment above the soil surface and a second pile segment below the soil surface. At least one flange assembly is disposed on the outer periphery of the second pile segment, each flange assembly including a plurality of flanges, and the plurality of flanges are distributed at circumferential intervals along the pile body; and, The stabilization component includes a stabilization body, which is disc-shaped and fitted onto the outside of the pile body, located at the connection between the first pile segment and the second pile segment, and pressed onto the soil surface.

2. The prestressed pipe pile as described in claim 1, characterized in that, The stabilization component also includes a protective casing, which is sleeved on the outside of the pile body and located on the upper side of the stabilization body. The lower end of the protective casing is fixedly connected to the stabilization body.

3. The prestressed pipe pile as described in claim 1 or 2, characterized in that, The stabilizing component also includes a disc wing, which is located around the periphery of the stabilizing body and extends downward below the soil surface.

4. The prestressed pipe pile as described in claim 3, characterized in that, The inner peripheral wall of the disc gradually widens from its upper end to its lower end.

5. The prestressed pipe pile as described in claim 1, characterized in that, At least three lifting rings are embedded inside the stabilization body, and the three lifting rings are distributed at intervals along the circumference of the stabilization body.

6. The prestressed pipe pile as described in claim 1, characterized in that, The flange assembly is provided in multiple ways, and the multiple flange assemblies are distributed at intervals along the vertical direction.

7. The prestressed pipe pile as described in claim 1, characterized in that, Each of the flanges is plate-shaped and extends along the vertical direction. The end of each flange away from the pile body is provided with a toothed portion, which is serrated.

8. The prestressed pipe pile as described in claim 1, characterized in that, Each of the aforementioned flange assemblies includes four of the aforementioned flanges.

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