CN215367246U

CN215367246U - Pile head protection barrel of cast-in-situ bored pile

Info

Publication number: CN215367246U
Application number: CN202121593448.0U
Authority: CN
Inventors: 胡中伟; 李令
Original assignee: MCC5 Group Shanghai Corp Ltd
Current assignee: MCC5 Group Shanghai Corp Ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2021-12-31
Anticipated expiration: 2031-07-14

Abstract

The utility model discloses a pile head protecting cylinder of a cast-in-situ bored pile, which comprises: the barrel body is formed by rolling a steel plate; a welding seam is formed at the intersection of the two sides of the steel plate of the cylinder body, and the welding seam extends to the first end and the second end of the cylinder body along the axial direction of the cylinder body; the first hoop and the second hoop are both made by bending steel bars; the first hoop is fixedly sleeved on the barrel and is close to the axial first end of the barrel, and the second hoop is fixedly sleeved on the barrel and is close to the axial second end of the barrel; the at least two reinforcing ribs are positioned between the first hoop and the second hoop; the at least two reinforcing ribs cross the welding seam along the circumferential direction of the cylinder body and are fixed on the outer wall of the cylinder body. The pile head protection barrel of the cast-in-situ bored pile can improve the construction efficiency of the cast-in-situ bored pile and effectively reduce resource waste.

Description

Pile head protection barrel of cast-in-situ bored pile

Technical Field

The utility model relates to the technical field of municipal engineering construction, in particular to a pile head protection barrel of a cast-in-situ bored pile.

Background

In the work progress of municipal works drilling bored concrete pile, in order to guarantee the quality of pile bolck concrete, generally can carry out the super-irrigation in order to form the mushroom pile head to the pile foundation when concreting. Therefore, the formed excessive cured concrete not only causes more concrete waste, but also consumes a large amount of manpower and material resources when the pile head is broken in the follow-up process.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems, the utility model provides a pile head protection barrel of a cast-in-situ bored pile, which is used for improving the construction efficiency of the cast-in-situ bored pile and reducing resource waste.

In order to achieve the purpose, the utility model provides the following technical scheme:

a pile head protection sleeve for a cast-in-situ bored pile, comprising:

the barrel body is formed by rolling a steel plate; a welding seam is formed at the intersection of the two sides of the steel plate of the cylinder body, and the welding seam extends to the first end and the second end of the cylinder body along the axial direction of the cylinder body;

the first hoop and the second hoop are both made by bending steel bars; the first hoop is fixedly sleeved on the barrel and is close to the axial first end of the barrel, and the second hoop is fixedly sleeved on the barrel and is close to the axial second end of the barrel; and

the at least two reinforcing ribs are positioned between the first hoop and the second hoop; the at least two reinforcing ribs cross the welding seam along the circumferential direction of the cylinder body and are fixed on the outer wall of the cylinder body.

In an embodiment of the present invention, a distance from the first hoop to the first axial end of the barrel is the same as a distance from the second hoop to the second axial end of the barrel.

In one embodiment of the present invention, the thickness of the steel plate is 1.25 to 3 mm.

In an embodiment of the present invention, the reinforcing rib is arc-shaped and coaxial with the cylinder.

In an embodiment of the present invention, the at least two reinforcing ribs are uniformly distributed between the first anchor ear and the second anchor ear.

In one embodiment of the utility model, the difference between the diameters of the cylinder and the bored pile is 80 mm.

The pile head protection barrel of the cast-in-situ bored pile can improve the construction efficiency of the cast-in-situ bored pile and effectively reduce resource waste.

Specifically, first, the pile head protection tube is easily available in processing material and is inexpensive. And secondly, the pile head protection barrel is easy to process and convenient to manufacture on site. Moreover, the pile head protection barrel is small in mass, sufficient in strength, convenient to use, easy to install and capable of remarkably improving the pile head construction quality of the cast-in-situ bored pile. Furthermore, the implementation of the utility model is beneficial to controlling the elevation of the pile head and reducing the loss of concrete, and in addition, the manpower and mechanical loss in the subsequent construction process can be reduced, and the construction efficiency is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model. It is obvious that the drawings in the following description are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of a pile head protection sleeve of a cast-in-situ bored pile according to an embodiment of the present invention.

Reference numerals

1 cylinder

21 first hoop

22 second hoop

3 reinforcing rib

4 weld seam

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted. It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Fig. 1 is a schematic structural diagram of a pile head protection sleeve of a cast-in-situ bored pile according to an embodiment of the present invention. As shown in fig. 1, the pile head protection sleeve of the cast-in-situ bored pile according to the present embodiment includes: a barrel 1, a first hoop 21, a second hoop 22, and at least two reinforcing ribs 3. The cylinder body 1 is formed by rolling a steel plate; a welding seam 4 is formed at the intersection of the two sides of the steel plate of the cylinder body 1, and the welding seam 4 extends to the first end and the second end of the cylinder body 1 along the axial direction of the cylinder body 1. Here, it should be understood by those skilled in the art that the steel plate should have a rectangular shape, and when the steel plate is rolled to form the cylinder, the two long sides of the steel plate intersect and are welded to form the weld 4, and the two short sides of the steel plate form the edges of the two axial ends of the cylinder. The first anchor ear 21 and the second anchor ear 22 are both made of bent steel bars; the first hoop 21 is fixedly sleeved on the barrel 1 and close to the axial first end of the barrel 1, and the second hoop 22 is fixedly sleeved on the barrel 1 and close to the axial second end of the barrel 1. The at least two reinforcing ribs 3 are positioned between the first hoop 21 and the second hoop 22; the at least two reinforcing ribs 3 span the weld 4 along the circumferential direction of the cylinder 1 and are fixed to the outer wall of the cylinder 1.

The pile head protection barrel of the cast-in-situ bored pile can improve the construction efficiency of the cast-in-situ bored pile and effectively reduce resource waste. Specifically, first, the pile head protection tube is easily available in processing material and is inexpensive. And secondly, the pile head protection barrel is easy to process and convenient to manufacture on site. Moreover, the pile head protection barrel is small in mass, sufficient in strength, convenient to use, easy to install and capable of remarkably improving the pile head construction quality of the cast-in-situ bored pile. Furthermore, the implementation of the utility model is beneficial to controlling the elevation of the pile head and reducing the loss of concrete, and in addition, the manpower and mechanical loss in the subsequent construction process can be reduced, and the construction efficiency is improved.

In a specific embodiment of the present invention, the cylinder 1 may be rolled by a galvanized steel sheet, the thickness may be 1.25-3 mm, the diameter of the cylinder 1 may be slightly larger than the diameter of the bored concrete pile, and the specific difference may be about 80 mm. The height of the cylinder 1 may be 1.5 m. The strength of the cylinder 1 itself can thereby be ensured.

As shown in fig. 1, the distance from the first hoop 21 to the first axial end of the barrel 1 may be the same as the distance from the second hoop 22 to the second axial end of the barrel 1. For example, the distance from the first hoop 21 to the first axial end of the barrel 1 may be 150mm, and in this case, the distance from the second hoop 22 to the second axial end of the barrel 1 is also 150 mm. The anchor ear can be formed by bending round steel with a diameter of 10mm or common steel bars, so that the strength of the barrel body 1 can be enhanced. That is, the arrangement of the reinforcing ribs can reduce the risk of cracking of the welding seams 4 at the intersection of the two sides of the steel plate, and further prolong the service life of the whole pile head protection cylinder. Further, the reinforcing rib 3 may be arc-shaped and coaxial with the cylinder 1. Said at least reinforcing bars 3 can be made by bending steel bars of moderate length. For example, a reinforcing bar with a length of 200mm can be selected, and the distance between two adjacent reinforcing bars 3 can be 150 mm. The reinforcing ribs 3 are attached to the outer wall of the barrel body 1 and fixed, so that the strength of the barrel body 1 can be further improved, and the risk of cracking of welding seams 4 at the intersection positions of two sides of the steel plate is reduced. Further, the at least two reinforcing ribs 3 are uniformly distributed between the first anchor ear 21 and the second anchor ear 22. The service life of the pile head protection cylinder as a whole can be further prolonged.

In conclusion, the pile head protection barrel of the cast-in-situ bored pile can improve the construction efficiency of the cast-in-situ bored pile and effectively reduce resource waste. Specifically, first, the pile head protection tube is easily available in processing material and is inexpensive. And secondly, the pile head protection barrel is easy to process and convenient to manufacture on site. Moreover, the pile head protection barrel is small in mass, sufficient in strength, convenient to use, easy to install and capable of remarkably improving the pile head construction quality of the cast-in-situ bored pile. Furthermore, the implementation of the utility model is beneficial to controlling the elevation of the pile head and reducing the loss of concrete, and in addition, the manpower and mechanical loss in the subsequent construction process can be reduced, and the construction efficiency is improved. The utility model is particularly suitable for protecting the pile head of the cast-in-situ bored pile with the pile diameter smaller than 1000 mm.

The utility model, when applied specifically, involves the following steps:

s1, pouring underwater concrete;

s2, measuring the elevation of the underwater concrete by using a measuring rope, and controlling the pouring amount of the underwater concrete;

and S3, when the underwater concrete is poured to the height of 2000-2500 mm from the designed pile top, placing the pile head protection barrel provided by the utility model, wherein the upper end of the pile head protection barrel is 500mm higher than the designed pile top height.

And S4, pouring underwater concrete until the upper end surfaces of the pile head protection cylinders are flush.

S5, manually cleaning the mud and the mud-sandwiched concrete on the upper end surface of the pile head protecting cylinder until a fresh concrete layer is exposed, and then vibrating and compacting;

and S6, when the strength of the pile head concrete exceeds 75% of the designed strength, removing the pile head protection barrel.

The utility model can protect the pile head when the cast-in-situ bored pile is poured, can be used for controlling the elevation of the pile head, reduces the consumption of concrete and improves the quality of the concrete pile head. The pile head does not need to be broken in subsequent construction, and subsequent testing work is facilitated. The pile head of the cast-in-place pile has the characteristics of simple structure, easiness in processing, low cost, convenience in use, high pile head height of the cast-in-place pile, easiness in control and good quality. Is particularly suitable for protecting the pile head of the cast-in-situ bored pile with the pile diameter smaller than 1000 mm.

In conclusion, the utility model can obviously improve the construction efficiency of the cast-in-situ bored pile and effectively reduce the resource waste.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pile head protection barrel of a cast-in-situ bored pile, comprising:

2. The pile head protection sleeve according to claim 1, wherein the distance from the first hoop to the first axial end of the sleeve is the same as the distance from the second hoop to the second axial end of the sleeve.

3. The pile head protection sleeve of the cast-in-situ bored pile according to claim 1, wherein the steel plate has a thickness of 1.25 to 3 mm.

4. The pile head protection sleeve of a bored pile according to claim 1, wherein the reinforcing rib is arc-shaped and coaxial with the sleeve.

5. The pile head protection sleeve of a bored pile according to claim 1, wherein the at least two reinforcing ribs are uniformly distributed between the first anchor ear and the second anchor ear.

6. The pile head protection sleeve of a bored pile according to claim 1, wherein a difference between a diameter of the sleeve and a diameter of the bored pile is 80 mm.