CN217150178U

CN217150178U - Precast concrete pile point and precast pile for installing pile point

Info

Publication number: CN217150178U
Application number: CN202123412763.1U
Authority: CN
Inventors: 陈巧; 葛明明; 苏以玉
Original assignee: Jianhua Construction Materials China Co Ltd
Current assignee: Jianhua Construction Materials China Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-08-09
Anticipated expiration: 2031-12-30

Abstract

The utility model provides a precast concrete pile tip and a precast pile for installing the pile tip, wherein the pile tip comprises a hanging ring, a boss, an overlapping section and a conical section; the lifting ring is arranged on the boss, the boss is arranged at the top of the lap joint section, the bottom of the lap joint section is provided with a conical section, and the lower part of the conical section is provided with a steel tip. The pile tip and the precast pile are spliced on site after being manufactured respectively and independently, so that the production efficiency of the original precast pile is not influenced, and the production safety of the precast pile is greatly improved.

Description

Precast concrete pile tip and precast pile for installing same

Technical Field

The utility model belongs to the technical field of building engineering, concretely relates to precast pile point and precast pile of this stake point of installation of precast concrete stake point.

Background

In the engineering construction field, the pile foundation is divided into precast piles and cast-in-place piles according to different materials, the precast piles comprise precast solid piles or precast hollow concrete tubular piles, hollow square piles and other different section forms, and the construction mode of the pile foundation is generally sunk into the stratum by adopting modes of hammering, static pressure, pile planting and the like according to different stratums. For the stratum with a part of compact sand layer or hard interlayer, when the hollow pile of the precast pile is constructed by hammering or static pressure, the problems of difficult construction, pile explosion of the precast pile and the like often occur. In order to solve the construction problem in a dense sand layer or a stratum with a hard interlayer, the main mode adopted at present is to add a steel pile tip or a concrete pile tip at the bottom end of a precast pile, the connection between the butted steel pile tip and the precast pile is usually welded by a large amount of manpower, the concrete pile tip and the precast pile are usually integrally manufactured, and the mode has the defects of low production efficiency, high potential safety hazard and the like.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a precast pile point and precast pile of this stake point of installation of precast concrete stake point, stake point and precast pile make the back independently respectively, splice at the scene, do not influence the production efficiency of original precast pile, have improved the security of precast pile production greatly.

The utility model provides a technical scheme that its technical problem adopted is:

a precast concrete pile tip comprises a hanging ring, a boss, an overlapping section and a conical section; the lifting ring is arranged on the boss, the boss is arranged at the top of the lap joint section, the bottom of the lap joint section is provided with a conical section, and the lower part of the conical section is provided with a metal tip.

In the above scheme, the boss comprises an upper conical section and a lower cylindrical section; the diameter of cylinder section is less than the inner chamber diameter of precast pile, and can laminate with the inner chamber of precast pile, the maximum diameter of cone section is less than the diameter of cylinder section.

In the scheme, the ratio of the height of the conical section to the height of the cylindrical section is 0.5-15.

In the scheme, the height of the lap joint section is larger than 50 cm.

In the scheme, the shape of the lap joint surface of the lap joint section is the same as that of the radial section of the precast pile.

Further, the lap joint surface is circular; the diameter of the overlapping surface is smaller than or equal to that of the precast pile.

Further, the lapping surface is polygonal; the diameter of the circumscribed circle of the lapping surface is smaller than or equal to that of the preformed pile.

In the scheme, the height of the conical section is more than 30 cm.

In the scheme, the taper angle alpha of the metal tip is 45-75 degrees.

In the scheme, the height of the metal tip is more than 50 cm.

In the scheme, the concrete of the lap joint section and the conical section is internally provided with a constructional steel bar.

In the scheme, the lifting ring is in a 'n' -shape, the two end parts of the lifting ring are provided with the hooks, the hooks extend into the concrete to be connected with the constructional steel bars, and the lower parts of the constructional steel bars are connected with the upper parts of the metal tips, so that the lifting ring, the constructional steel bars and the metal tips are integrated.

Further, the concrete strength grade is not lower than C50.

Further, the metal tip may be a steel tip or other alloy tip.

The utility model provides a precast pile, the precast pile install precast concrete stake point.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses stake point and precast pile independently make the back respectively, can splice at the scene, do not influence the production efficiency of original precast pile, have improved the security of precast pile production greatly.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a precast concrete pile tip structure according to embodiment 1 of the present invention;

fig. 2 is a front view of the precast concrete pile tip structure according to embodiment 1 of the present invention.

Fig. 3 is a plan view of a precast concrete pile tip structure according to embodiment 1 of the present invention.

Fig. 4 is a schematic view of a construction steel bar according to embodiment 1 of the present invention.

Fig. 5 is a cross-sectional view of fig. 4A-a.

Fig. 6 is a schematic structural view of a precast pile with a precast concrete pile tip according to embodiment 1 of the present invention.

Fig. 7 is a plan view of a precast concrete pile tip structure according to embodiment 2 of the present invention.

Fig. 8 is a plan view of a precast concrete pile tip structure according to embodiment 3 of the present invention.

In the figure: 1. a metal tip; 2. a hoisting ring; 3. a boss; 5. a cylindrical section; 51. a lapping surface; 6. a conical section; 7. constructing a steel bar; 8. and (3) concrete.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Example 1

As shown in fig. 1-3, a precast concrete pile tip comprises a lifting ring 2, a boss 3, an overlapping section and a conical section; the hanging ring 2 is arranged on the boss 3, the boss 3 is arranged at the top of the lap joint section, the bottom of the lap joint section is provided with a conical section, and the lower part of the conical section is provided with a metal tip 1.

According to the present embodiment, preferably, the metal tip 1 is a steel tip.

According to the present embodiment, preferably, said boss 3 comprises an upper conical section 32 and a lower cylindrical section 31; the diameter d 'of the cylindrical section 31 is smaller than the diameter of the inner cavity of the precast pile 9 and can be attached to the inner cavity of the precast pile 9, the maximum diameter d of the conical section 32 is smaller than the diameter d' of the cylindrical section 31, the pile tip is conveniently overlapped with the inner cavity of the precast pile 9 due to the design, the conical upper portion plays a role in guiding and stabilizing, and the cylindrical lower portion is tightly attached to the inner wall of the inner cavity after the pile tip enters the inner cavity of the precast pile 9, so that the overlapping with the precast pile 9 is achieved. The boss 3 adopts the combination of the conical section 32 and the cylindrical section 31, so that the pile tip can enter the inner cavity of the precast pile 9 more easily, and the lap joint with the precast pile 9 is more convenient.

Preferably, the ratio of the height of the conical section 32 to the height of the cylindrical section 31 is 0.5-15, which is more convenient for inserting the precast concrete pile tip into the precast pile.

According to the present embodiment, it is preferable that the overlapping surface 51 of the upper portion of the overlapping section has the same shape as the radial cross section of the precast pile 9. Preferably, the lap joint section is a cylindrical section 5, the lap joint surface 51 is circular, and the conical section is a conical section 6; the diameter D of the overlapping surface 51 is smaller than or equal to the diameter of the precast pile 9, and is tightly attached to the end of the precast pile 9.

According to the embodiment, preferably, the lower part of the conical section 6 is provided with the metal tip 1, so that the pile tip has stronger soil penetrating power, and the conical angle alpha of the metal tip 1 is 45-75 degrees.

The total height of the precast concrete pile tip is H, the height of a conical section and a metal tip 1 is H1, the height of an overlapping section is H2, the height of a boss 2 is H3, the height of the metal tip is H4, the height of a cylindrical section 31 at the lower part of the boss 2 is H5, preferably, the height H2 of the overlapping section is more than 50cm, the height of the conical section is more than 30cm, and the height of the metal tip 1 is more than 50cm, so that the precast concrete pile tip has higher bearing capacity and higher driving resistance.

As shown in fig. 4 and 5, according to the present embodiment, it is preferable that the concrete 8 of the overlapping and tapered sections is provided with construction steel bars 7. Preferably, rings 2 are "nearly" shape, and both ends are equipped with the crotch, and the crotch stretches into in the concrete to be connected with construction reinforcing bar 7, and construction reinforcing bar 7's lower part is connected with the upper portion of metal point 1 to make rings 2,

construction reinforcing bar

7 and 1 three of metal point become a whole, remove from and set up the hoop reinforcement, not only strengthened the steadiness of stake point steel skeleton, and saved manufacturing cost.

According to the present embodiment, it is preferable that the strength grade of the concrete 8 is not lower than C50.

As shown in fig. 6, in the precast pile, the precast concrete pile tip is installed on the precast pile 9, and the pile tip and the precast pile 9 are spliced on site after being manufactured respectively and independently, so that the production efficiency of the original precast pile 9 is not affected, and the safety of precast pile production is greatly improved.

The utility model has the characteristics of simple structure, stake point and precast pile 9 exempt from to weld, the concrete intensity is high, the penetrability is strong, the construction is convenient, stability is good, the cost is low etc.

Example 2

The present embodiment 2 is different from embodiment 1 in that the overlapping section is a polygonal section, and the overlapping surface 51 is a polygon; the diameter D of the circumscribed circle of the lapping surface 51 is smaller than or equal to the diameter of the circumscribed circle of the precast pile. As shown in fig. 7, the overlapping surface 51 has a square shape. The embodiment 2 has the same beneficial effects as the embodiment 1, and the description is omitted here.

Example 3

The present embodiment 3 is different from the embodiment 2 in that, as shown in fig. 8, the overlapping surface 51 is hexagonal. This embodiment 3 has the same advantageous effects as those of

embodiments

1 and 2, and will not be described in detail here.

In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the invention. The foregoing description is only a preferred embodiment of the invention, which can be embodied in many different forms and is therefore not limited to the specific embodiments disclosed above. While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. All the contents that do not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims

1. The precast concrete pile tip is characterized by comprising a lifting ring (2), a boss (3), an overlapping section and a conical section; rings (2) set up on boss (3), boss (3) set up at overlap joint section top, the bottom of overlap joint section is equipped with the conic section, the lower part of conic section is equipped with metal point (1).

2. Precast concrete pile tip according to claim 1, characterized in that the boss (3) comprises an upper conical section (32) and a lower cylindrical section (31); the diameter of the cylindrical section (31) is smaller than the diameter of an inner cavity of the precast pile (9) and can be attached to the inner cavity of the precast pile (9), and the maximum diameter of the conical section (32) is smaller than the diameter of the cylindrical section (31).

3. The precast concrete pile tip according to claim 2, wherein a ratio of a height of the conical section (32) to a height of the cylindrical section (31) is 0.5 to 15.

4. The precast concrete pile tip of claim 1, wherein the overlapping section has a height greater than 50 cm.

5. Precast concrete pile tip according to claim 1, characterized in that the overlapping surface (51) of the overlapping section is the same shape as the radial cross section of the precast pile (9).

6. The precast concrete pile tip of claim 5, wherein the faying surface (51) is circular; the diameter of the overlapping surface (51) is smaller than or equal to that of the precast pile (9).

7. Precast concrete pile tip according to claim 5, characterized in that the faying surface (51) is polygonal; the diameter of the circumscribed circle of the overlapping surface (51) is smaller than or equal to the diameter of the circumscribed circle of the precast pile (9).

8. The precast concrete pile tip of claim 1, wherein the height of the conical section is greater than 30 cm.

9. Precast concrete pile tip according to claim 1, characterized in that the metal tip (1) has a taper angle α of 45 ° to 75 °.

10. Precast concrete pile tip according to claim 1, characterized in that the height of the metal tip (1) is more than 50 cm.

11. Precast concrete pile tip according to claim 1, characterized in that inside the concrete (8) of the overlap and cone segments there are construction rebars (7).

12. The precast concrete pile tip as recited in claim 11, wherein the suspension ring (2) is in a shape of a 'ji', and both ends are provided with hooks, the hooks extend into the concrete (8) to be connected with the construction steel bars (7), and the lower parts of the construction steel bars (7) are connected with the upper parts of the metal tips (1).

13. The precast concrete pile tip of claim 11, characterized in that the strength grade of the concrete (8) is not lower than C50.

14. A precast pile characterized by being equipped with a precast concrete pile tip as recited in any one of claims 1 to 13.