Pencil pile with conical iron pile cap at pile tip

Abstract

The utility model relates to the field of precast concrete pipe piles, in particular to a pencil pile with a conical iron pile cap at a pile tip, which comprises a pencil pile main body, the pencil pile main body comprises a flat-end pipe pile and the conical iron pile cap, a reinforcement mechanism is arranged in the flat-end pipe pile, prestressed reinforcements are arranged in the reinforcement mechanism in an annular array mode, and the conical iron pile cap is arranged in the flat-end pipe pile. Second spiral stirrups are installed on the outer sides of the middles of the prestressed steel bars, third spiral stirrups are arranged at the side ends, close to the conical iron pile cap, of the second spiral stirrups, conical spiral stirrups are installed at the positions, located on the inner side wall of the conical iron pile cap, of the ends of the third spiral stirrups, and welding grooves are formed in the side surface of the conical iron pile cap in an array mode. And clamping blocks are mounted on the inner side walls of the welding grooves. The conical iron pile cap is arranged on the outer side of the conical spiral stirrup in a sleeving mode, the conical iron pile cap and the conical spiral stirrup are welded and fixed through the welding groove, then the butt joint base plate and the conical iron pile cap are welded and fixed, and therefore after concrete is poured, the connecting strength of the conical iron pile cap and the flat-end pipe pile is large.

Description

Technical Field

[0001] This utility model relates to the field of precast concrete pipe piles, specifically a pencil pile with a conical iron pile cap at the pile tip. Background Technology

[0002] Precast flat-head pipe piles are a type of ultra-high strength prestressed concrete pipe pile. Flat-head pipe piles refer to prestressed concrete pipe piles with a concrete strength grade greater than C100. Compared with ordinary prestressed high-strength concrete pipe piles (PHC), flat-head pipe piles have higher pile strength and can penetrate dense sand and clay layers. In reinforced composite pile and end-bearing pile projects, the vertical bearing capacity of flat-head pipe piles can be fully utilized, resulting in significant economic advantages.

[0003] However, the current flat-head pipe piles, which use a flat head + concrete pile tip structure, must be prefabricated separately and then welded together later. The subsequent connection is time-consuming and the overall effect is poor. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a pencil stake with a conical iron stake cap at the stake tip, thus solving the problems mentioned in the background.

[0005] This utility model provides the following technical solution: a pencil pile with a conical iron pile cap at the pile tip, comprising a pencil pile body, the pencil pile body comprising: a flat-headed pipe pile and a conical iron pile cap, the flat-headed pipe pile having a reinforcement mechanism inside, the reinforcement mechanism having a prestressed steel bar arranged in a circular array inside, a second spiral stirrup installed on the outer side of the middle of the prestressed steel bar, a third spiral stirrup being provided at the end of the second spiral stirrup near the conical iron pile cap, a conical spiral stirrup being installed at the end of the third spiral stirrup on the inner side wall of the conical iron pile cap, welding grooves being arrayed on the side surface of the conical iron pile cap, a locking block being installed on the inner side wall of the welding groove, and a butt plate being installed above the locking block inside the welding groove.

[0006] As a further embodiment of this utility model: a first spiral stirrup is provided at the end of the second spiral stirrup located away from the third spiral stirrup, and a connecting column is installed at the center of the conical iron pile cap.

[0007] As a further embodiment of this utility model: an end plate is installed at the end of the flat-headed pipe pile away from the conical iron pile cap, and a pipe pile hoop is installed on the outer side of the end of the flat-headed pipe pile close to the end plate.

[0008] As a further improvement of this utility model, the conical spiral stirrup and the third spiral stirrup are fixedly connected by welding.

[0009] As a further embodiment of this utility model: the conical spiral stirrup is fixedly connected to the conical iron pile cap by welding, and the butt plate is fixedly connected to the conical iron pile cap by welding.

[0010] As a further improvement of this utility model, the second spiral stirrup is integrally and fixedly connected with the third spiral stirrup.

[0011] As a further improvement of this utility model, the conical iron stake cap is a metal component.

[0012] As a further improvement of this utility model, the end plate is welded and fixedly connected to the prestressed steel bar.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By fitting a tapered iron pile cap onto the outside of a tapered spiral stirrup and welding the tapered iron pile cap to the tapered spiral stirrup using a welding groove, and then placing the butt plate on top of the clamping block in the welding groove, the butt plate and the tapered iron pile cap are welded together to secure the connection. Therefore, after pouring concrete, the connection strength between the tapered iron pile cap and the flat-headed pipe pile is relatively high.

[0015] 2. The conical iron pile cap is directly and integrally fixed to the flat-head pipe pile, which can eliminate the need for disassembly and increase the overall strength of the pencil pile body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a pencil pile with a conical iron cap at the pile tip;

[0017] Figure 2 This is a cross-sectional view of the main body of a pencil stake with a conical iron cap at the top.

[0018] Figure 3 This is a schematic diagram of the reinforcement mechanism in a pencil pile with a conical iron pile cap at the pile tip;

[0019] Figure 4 This is a partially enlarged schematic diagram of the conical iron cap in a pencil stake with a conical iron cap at the pile tip;

[0020] Figure 5 This is a cross-sectional view of the conical iron cap in a pencil stake with a conical iron cap at the pile tip.

[0021] In the diagram: 1. Pencil pile body; 2. Flat-headed pipe pile; 3. Conical iron pile cap; 4. Pipe pile hoop; 5. End plate; 6. Reinforcement mechanism; 301. Welding groove; 302. Butt joint pad; 303. Clamping block; 304. Butt joint column; 601. Prestressed steel bar; 602. First spiral hoop; 603. Second spiral hoop; 604. Third spiral hoop; 605. Conical spiral hoop. Detailed Implementation

[0022] 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.

[0023] like Figure 1-5 As shown, this embodiment provides a pencil pile with a conical iron pile cap at the pile tip, including a pencil pile body 1. The pencil pile body 1 includes: a flat-headed pipe pile 2 and a conical iron pile cap 3. The conical iron pile cap 3 is a metal component. The flat-headed pipe pile 2 is internally provided with a reinforcement mechanism 6. The reinforcement mechanism 6 is internally provided with a ring array of prestressed steel bars 601. A second spiral stirrup 603 is installed on the outer side of the middle part of the prestressed steel bars 601. A third spiral stirrup 604 is provided on one side of the second spiral stirrup 603 near the conical iron pile cap 3. The end of the reinforcing bar 604 is equipped with a tapered spiral stirrup 605 on the inner wall of the tapered iron pile cap 3. The tapered spiral stirrup 605 and the third spiral stirrup 604 are fixedly connected by welding. The tapered spiral stirrup 605 and the tapered iron pile cap 3 are fixedly connected by welding. The side surface of the tapered iron pile cap 3 is arrayed with welding grooves 301. The inner wall of the welding groove 301 is equipped with a locking block 303. Above the locking block 303, inside the welding groove 301, a mating pad 302 is installed. The mating pad 302 and the tapered iron pile cap 3 are fixedly connected by welding.

[0024] like Figure 2-3 As shown, in this embodiment, a first spiral stirrup 602 is provided at the end of the second spiral stirrup 603 that is away from the third spiral stirrup 604. The second spiral stirrup 603, the third spiral stirrup 604, and the first spiral stirrup 602 are integrally fixedly connected. The spacing between two adjacent reinforcing bars of the first spiral stirrup 602 and the third spiral stirrup 604 is smaller than the spacing between the reinforcing bars of the second spiral stirrup 603. A butt joint column 304 is installed at the center of the conical iron pile cap 3. An end plate 5 is installed at the end of the flat-headed pipe pile 2 that is away from the conical iron pile cap 3. The end plate 5 is welded and fixedly connected to the prestressed reinforcing bar 601. A pipe pile hoop 4 is installed on the outer side of the end of the flat-headed pipe pile 2 that is close to the end plate 5.

[0025] The working principle of this utility model is as follows: In use, the first spiral stirrup 602, the second spiral stirrup 603, and the third spiral stirrup 604 are wrapped around the outside of the prestressed steel bars 601 arranged in a ring and then fixed. The conical iron pile cap 3 is then fitted over the outside of the conical spiral stirrup 605 at the end of the first spiral stirrup 602. The conical iron pile cap 3 is then welded to the conical spiral stirrup 605 through the welding groove 301 on the outside of the conical iron pile cap 3. The connecting plate 302 is then placed above the locking block 303 in the welding groove 301. Finally, the connecting plate 302 and the conical iron pile cap are connected. 3. After welding and fixing, the casting template is placed on the first spiral stirrup 602, the second spiral stirrup 603, and the third spiral stirrup 604. Then, the inner template is inserted into the inside of the prestressed steel bar 601. The end of the conical template is placed against the butt joint column 304 inside the conical iron pile cap 3. After the concrete is poured and dried, the template is removed, and the pencil pile body 1 is formed as a whole. The conical iron pile cap 3 at the end of the flat-head pipe pile 2 can increase the penetration force. At the same time, the conical iron pile cap 3 and the flat-head pipe pile are directly and integrally fixedly connected, which can achieve the goal of eliminating the need for disassembly, increasing the overall strength of the pencil pile body 1, and reducing the production and processing steps.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pencil stake with a conical iron cap at the top, comprising a pencil stake body (1), characterized in that, The pencil pile body (1) includes: a flat-headed pipe pile (2) and a conical iron pile cap (3). The flat-headed pipe pile (2) is provided with a reinforcement mechanism (6). The reinforcement mechanism (6) is provided with a prestressed steel bar (601) arranged in a ring array. A second spiral stirrup (603) is installed on the outer side of the middle part of the prestressed steel bar (601). A third spiral stirrup (604) is provided on the side end of the second spiral stirrup (603) near the conical iron pile cap (3). A conical spiral stirrup (605) is installed on the inner side wall of the conical iron pile cap (3). A welding groove (301) is arrayed on the side surface of the conical iron pile cap (3). A locking block (303) is installed on the inner side wall of the welding groove (301). A butt plate (302) is installed above the locking block (303) inside the welding groove (301).

2. A pencil stake with a conical iron cap at the pile tip according to claim 1, characterized in that, The second spiral stirrup (603) has a first spiral stirrup (602) at one end away from the third spiral stirrup (604), and a connecting column (304) is installed at the center of the conical iron pile cap (3).

3. A pencil stake with a conical iron cap at the pile tip according to claim 1, characterized in that, The flat-headed pipe pile (2) has an end plate (5) installed at the end away from the conical iron pile cap (3), and a pipe pile hoop (4) is installed on the outer side of the end of the flat-headed pipe pile (2) close to the end plate (5).

4. A pencil stake with a conical iron cap at the pile tip according to claim 1, characterized in that, The tapered spiral stirrup (605) and the third spiral stirrup (604) are fixedly connected by welding.

5. A pencil stake with a conical iron cap at the pile tip according to claim 1, characterized in that, The conical spiral stirrup (605) and the conical iron pile cap (3) are fixedly connected by welding, and the butt plate (302) and the conical iron pile cap (3) are fixedly connected by welding.

6. A pencil stake with a conical iron cap at the pile tip according to claim 2, characterized in that, The second spiral stirrup (603) is integrally and fixedly connected with the third spiral stirrup (604) and the first spiral stirrup (602).

7. A pencil stake with a conical iron cap at the pile tip according to claim 1, characterized in that, The conical iron stake cap (3) is a metal component.

8. A pencil stake with a conical iron cap at the pile tip according to claim 3, characterized in that, The end plate (5) is welded and fixedly connected to the prestressed steel bar (601).

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