CN210395400U - Prestressed hollow pile connecting structure - Google Patents
Prestressed hollow pile connecting structure Download PDFInfo
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- CN210395400U CN210395400U CN201920877943.0U CN201920877943U CN210395400U CN 210395400 U CN210395400 U CN 210395400U CN 201920877943 U CN201920877943 U CN 201920877943U CN 210395400 U CN210395400 U CN 210395400U
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Abstract
The utility model discloses a prestressed hollow pile connecting structure, which comprises a bearing platform and prestressed hollow piles, wherein the prestressed hollow piles are sequentially connected end to end from top to bottom, and the bearing platform is arranged at the top of the prestressed hollow piles; pouring core-filling concrete in the hollow pile, wherein a pile hole partition plate is arranged in the core-filling concrete; the two ends of each hollow pile are provided with tooth-shaped end plates, the tooth-shaped end plates are uniformly provided with a plurality of notches along the outer peripheries of the tooth-shaped end plates, pile body notches are formed in the positions, adjacent to the tooth-shaped end plates, of the pile bodies of the hollow piles, and the tooth-shaped end plates on the two adjacent hollow piles are welded and fixed through pile connecting pieces; and a bearing platform anchor bar is arranged in the bearing platform and is fixed with the tooth-shaped end plate on the prestressed hollow pile. The top pouring core of the prestressed hollow pile adopts plain concrete to pour together with the upper bearing platform, thereby greatly shortening the construction period; the mechanical connection is added between the piles, and the piles and the bearing platform are directly connected mechanically, so that the mechanical property and reliability of the joints are greatly improved, and the pile is particularly suitable for uplift piles and compression piles in soft soil foundations.
Description
Technical Field
The utility model relates to a hollow stake connection structure of prestressing force belongs to building pile technical field.
Background
The end plate of the existing prestressed hollow pile is round or square, the pile is connected with the pile through the end plate in a welding mode, the pile is connected with a bearing platform through reinforcing steel bars in core-poured concrete in pile holes, in field construction, the quality of welding seams of the end plate and the compactness of the core-poured concrete are difficult to guarantee, particularly for uplift piles and compression-resistant piles in soft soil foundations, quality accidents such as the extraction of the core-poured concrete, pile breakage and the like are easy to cause, and the durability of the connection part of the pile and the pile is difficult to guarantee.
Disclosure of Invention
To the problem that above-mentioned prior art exists, the utility model provides a hollow stake connection structure of prestressing force has improved the mechanical properties and the degree of reliability of junction.
In order to achieve the purpose, the utility model discloses a prestressed hollow pile connecting structure, including cushion cap and a plurality of prestressed hollow piles, the prestressed hollow piles are connected end to end from top to bottom in proper order, the cushion cap is installed at the top of prestressed hollow pile;
pouring core-filling concrete in the hollow pile, wherein a pile hole partition plate is arranged in the core-filling concrete; the two ends of each hollow pile are respectively provided with a tooth-shaped end plate, the tooth-shaped end plates are uniformly provided with a plurality of notches along the outer periphery of the tooth-shaped end plates, pile body notches are formed in the positions, adjacent to the tooth-shaped end plates, of the pile bodies of the hollow piles, and the tooth-shaped end plates on the two adjacent hollow piles are welded and fixed through pile connecting pieces;
and a bearing platform anchor bar is arranged in the bearing platform and is fixed with the tooth-shaped end plate on the prestressed hollow pile through the pile top connecting piece I or the pile top connecting piece II.
As an improvement, the section of the pile body of the prestressed hollow pile is circular or square, and the inner hole is circular.
As an improvement, the notch of the pile body is arranged corresponding to the notch on the tooth-shaped end plate or is arranged along the whole circumference of the pile body.
As an improvement, the pile connecting piece is I-shaped.
As the improvement, pile top connecting piece I is the character of crease, and the upper end local thickening of pile top connecting piece I, thickening part are opened has U type groove, and open at the bottom of the U type groove has the notch.
As an improvement, the pile top connecting piece II is a bolt with a U-shaped groove on the side surface, and a notch is formed at the bottom of the U-shaped groove on the side surface corresponding to the center of the bolt; and the tooth-shaped end plate is provided with a prestress tensioning hole for installing a pile top connecting piece II.
As an improvement, the bearing platform anchor bar is made of a steel bar, and two ends of the bearing platform anchor bar are provided with upset heads, or one end of the bearing platform anchor bar is provided with an upset head, and the other end of the bearing platform anchor bar is provided with a hook.
Compared with the prior art, the top pouring core of the prestressed hollow pile adopts plain concrete to pour together with the upper bearing platform, thereby greatly shortening the construction period and saving the construction cost; mechanical connection is added between piles on the basis of traditional welding connection, and the piles are directly connected with a bearing platform, so that the mechanical property and reliability of the connection position are greatly improved, and the pile is particularly suitable for uplift piles and compression-resistant piles in soft soil foundations.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
FIG. 4 is a schematic structural view of the middle square-tooth-shaped end plate of the present invention;
FIG. 5 is a schematic structural view of a middle-circular-tooth-shaped end plate according to the present invention;
fig. 6 is a schematic structural view of the pile connecting member of the present invention;
fig. 7 is a schematic structural view of a pile top connecting piece i in the utility model;
fig. 8 is a front view of a second middle pile top connecting piece of the present invention;
FIG. 9 is a top view of FIG. 8;
fig. 10 is a schematic structural view of a connecting member for a bent pile according to the present invention;
fig. 11 is a schematic structural view of a first bending pile top connecting piece of the present invention;
in the figure: 1. the pile comprises a pile body, 2 pile connecting pieces, 3 tooth-shaped end plates, 3-1 square tooth-shaped end plates, 3-2 circular tooth-shaped end plates, 4 pile hole partition plates, 5 pile top connecting pieces I and 6 pile top connecting pieces II and 7 pile top connecting pieces, a bearing platform, 8 bearing platform anchor bars, 9 pile body notches, 10 core concrete pouring, 11 bent pile connecting pieces, 12 bent pile top connecting pieces and the first bent pile top connecting pieces.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 1, 2 and 3, a prestressed hollow pile connecting structure comprises a bearing platform 7 and a plurality of prestressed hollow piles, wherein the prestressed hollow piles are sequentially connected end to end from top to bottom, and the bearing platform 7 is installed at the tops of the prestressed hollow piles;
the core-filling concrete 10 is poured in the hollow pile, the pile hole partition plate 4 is installed in the core-filling concrete 10, the pile hole partition plate 4 is pre-buried in a proper position in the pile body 1 according to the core-filling length requirement and is used for supporting the core-filling concrete 10, the working procedure of placing a reinforcement cage and a support plate in a construction site is omitted, the construction efficiency is improved, the construction cost is reduced, the core-filling concrete 10 can be poured together with the bearing platform 7 in the construction site and can also be poured in advance in a factory, and therefore the quality of the core-filling concrete 10 is improved; the two ends of each hollow pile are respectively provided with a tooth-shaped end plate 3, the tooth-shaped end plates 3 are uniformly provided with a plurality of notches along the outer periphery, the pile body 1 of each hollow pile is provided with a pile body notch 9 at the position adjacent to the tooth-shaped end plate 3, and the tooth-shaped end plates 3 on two adjacent hollow piles are welded and fixed through pile connecting pieces 2;
and a bearing platform anchor bar 8 is arranged in the bearing platform 7, and the bearing platform anchor bar 8 is fixed with the tooth-shaped end plate 3 on the prestressed hollow pile through a pile top connecting piece I5 or a pile top connecting piece II 6.
As an improvement of the embodiment, the section of the pile body 1 of the prestressed hollow pile is circular or square, and the inner hole is circular. As shown in fig. 4 and 5, the tooth-shaped end plate 3 has the same plane shape and size as the cross section of the pile body 1, and is a circular tooth-shaped end plate 3-2 and a square tooth-shaped end plate 3-1. The pile body notch 9 is arranged corresponding to the notch on the tooth-shaped end plate 3 or is arranged along the whole circumference of the pile body 1.
As a modification of the embodiment, as shown in fig. 6, the pile connector 2 is formed in an i-shape for connecting the toothed end plates 3 of two piles. As shown in fig. 7, the pile top connecting piece i 5 is in an inverted zigzag shape and is used for connecting the tooth-shaped end plate 3 of the pile top with the anchor bar 8 of the bearing platform; the upper end of the pile top connecting piece I5 is locally thickened, a U-shaped groove is formed in the thickened part, a notch is formed in the bottom of the U-shaped groove, and the notch just accommodates the upset head of the bearing platform anchor bar 8.
For the corner of the square prestressed hollow pile, the pile connecting piece 2 and the pile top connecting piece one 5 are bent for 90 degrees along the I-shaped and I-shaped vertical middle shaft, as shown in figures 10 and 11, so that the corner of the prestressed hollow pile is reliably connected, and the integral bending resistance of the pile is ensured.
As an improvement of the embodiment, as shown in fig. 8 and 9, the pile top connecting piece two 6 is a bolt with a U-shaped groove on the side surface, a notch is formed at the bottom of the U-shaped groove on the side surface corresponding to the center of the bolt, and the notch just accommodates the upset head of the anchor bar 8 of the bearing platform; the tooth-shaped end plate 3 is provided with a prestress tensioning hole for installing the pile top connecting piece II 6, and the tooth-shaped end plate 3 of the pile top is connected with the bearing platform anchor bar 8 through the pile top connecting piece II 6.
The pile top connecting piece I5 and the pile top connecting piece II 6 are connected with the tooth-shaped end plate 3 in a mechanical mode, so that the mechanical property and the reliability of a connecting part are greatly improved, and a reinforcement cage in core-filling concrete can be omitted; the U-shaped groove and the bottom notch on the bearing platform are greatly convenient to connect with the bearing platform anchor bar 8, and the construction efficiency is improved; particularly, when the pile top connecting piece II 6 is used for the uplift pile, the tension is directly transmitted to the prestressed steel bars in the pile body 1 through the prestressed tensioning holes, so that the force transmission is more direct.
As an improvement of the embodiment, the bearing platform anchor bars 8 are made of high-strength prestressed steel bars, so that the using amount of the bearing platform anchor bars is saved; both ends of the bearing platform anchor bar 8 are provided with upset heads, or one end is provided with an upset head and the other end is provided with a hook.
Additionally, the utility model discloses a tooth-shaped end plate 3, pile body notch 9, pile connecting piece 2, pile bolck connecting piece 5 isotructures can be applied to on the prefabricated solid pile that indulges muscle effective connection in end plate and the pile body equally.
When in use, taking a prestressed hollow pile with a circular section as an example, the prestressed hollow pile is produced by adopting two tooth-shaped end plates 3 and a pile hole partition plate 4, and the position of the pile hole partition plate 4 is determined according to the required length of core concrete 10; a pile body notch 9 is reserved at the position close to the two tooth-shaped end plates 3; in the construction process, when the pile is connected with the pile, the pile connecting piece 2 is inserted into the notch of the tooth-shaped end plate 3 and the notch 9 of the pile body, and the joints between the two tooth-shaped end plates 3 and between the tooth-shaped end plate 3 and the pile connecting piece 2 are welded; when the pile is connected with the bearing platform, a pile top connecting piece I5 can be selected, the bearing platform anchor bar 8 is firstly placed in a U-shaped groove of the pile top connecting piece I5, then the pile top connecting piece I5 is inserted into the tooth-shaped end plate 3 and the pile body notch 9, and then the seam between the tooth-shaped end plate 3 and the pile top connecting piece I5 is welded; or, selecting a pile top connecting piece II, firstly placing the bearing platform anchor bars 8 into the U-shaped groove of the pile top connecting piece II 6, and then screwing the pile top connecting piece II 6 into the prestress tensioning hole on the tooth-shaped end plate 3; and binding reinforcing steel bars of the bearing platform, and finally pouring core-filling concrete 10 and the bearing platform 7.
The top pouring core of the prestressed hollow pile adopts plain concrete to pour together with the upper bearing platform, thereby greatly shortening the construction period and saving the construction cost; mechanical connection is added between piles on the basis of traditional welding connection, and the piles are directly connected with a bearing platform, so that the mechanical property and reliability of the connection position are greatly improved, and the pile is particularly suitable for uplift piles and compression-resistant piles in soft soil foundations.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.
Claims (7)
1. A prestressed hollow pile connecting structure comprises a bearing platform (7) and a plurality of prestressed hollow piles, wherein the prestressed hollow piles are sequentially connected end to end from top to bottom, and the bearing platform (7) is installed at the tops of the prestressed hollow piles;
it is characterized in that core-filling concrete (10) is poured in the hollow pile, and a pile hole partition plate (4) is installed in the core-filling concrete (10); the two ends of each hollow pile are respectively provided with a tooth-shaped end plate (3), the tooth-shaped end plates (3) are uniformly provided with a plurality of notches along the outer periphery of the tooth-shaped end plates, pile body notches (9) are arranged on the pile body (1) of each hollow pile, which is close to the tooth-shaped end plates (3), and the tooth-shaped end plates (3) on two adjacent hollow piles are welded and fixed through pile connecting pieces (2);
and a bearing platform anchor bar (8) is arranged in the bearing platform (7), and the bearing platform anchor bar (8) is fixed with a tooth-shaped end plate (3) on the prestressed hollow pile through a pile top connecting piece I (5) or a pile top connecting piece II (6).
2. A prestressed hollow pile connecting structure according to claim 1, characterized in that the pile body (1) of the prestressed hollow pile has a circular or square cross-section and the inner hole has a circular shape.
3. A pre-stressed hollow pile connection according to claim 1, characterized in that the pile body recess (9) is arranged to correspond to a recess in the toothed end plate (3) or along the entire circumference of the pile body (1).
4. A prestressed hollow pile connecting structure according to claim 1, characterized in that said pile connecting member (2) is i-shaped.
5. The prestressed hollow pile connecting structure according to claim 1, wherein said pile top connecting member (5) is in a shape of an inverted letter "r", an upper end of the pile top connecting member (5) is locally thickened, the thickened portion is provided with a U-shaped groove, and a notch is formed at a bottom of the U-shaped groove.
6. The prestressed hollow pile connecting structure according to claim 1, wherein the pile top connecting member two (6) is a bolt with a U-shaped groove on the side surface, and a notch is formed at the bottom of the U-shaped groove on the side surface corresponding to the center of the bolt; and the tooth-shaped end plate (3) is provided with a prestress tensioning hole for installing a pile top connecting piece II (6).
7. A prestressed hollow pile connecting structure according to claim 1, characterized in that said bearing platform anchor (8) is made of steel bar, and both ends of the bearing platform anchor (8) are provided with a heading, or one end is provided with a heading and the other end is provided with a hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920877943.0U CN210395400U (en) | 2019-06-12 | 2019-06-12 | Prestressed hollow pile connecting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920877943.0U CN210395400U (en) | 2019-06-12 | 2019-06-12 | Prestressed hollow pile connecting structure |
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| CN210395400U true CN210395400U (en) | 2020-04-24 |
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| CN201920877943.0U Active CN210395400U (en) | 2019-06-12 | 2019-06-12 | Prestressed hollow pile connecting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111560940A (en) * | 2020-05-09 | 2020-08-21 | 中铁二十局集团第三工程有限公司 | Treatment method of karst tunnel |
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- 2019-06-12 CN CN201920877943.0U patent/CN210395400U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111560940A (en) * | 2020-05-09 | 2020-08-21 | 中铁二十局集团第三工程有限公司 | Treatment method of karst tunnel |
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