CN211735362U

CN211735362U - Precast concrete tubular pile

Info

Publication number: CN211735362U
Application number: CN202020088904.5U
Authority: CN
Inventors: 吴欣
Original assignee: Taizhou Vocational and Technical College
Current assignee: Taizhou Leili Construction Co ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-10-23
Anticipated expiration: 2030-01-15

Abstract

The utility model provides a precast concrete tubular pile belongs to building technical field. The bearing capacity of the existing precast concrete tubular pile is poor. This precast concrete tubular pile includes the hollow tube-shape pile body, be equipped with a plurality of bosss of arranging along pile body circumference interval on the outer wall of pile body, its characterized in that, the boss be rectangular form and with the axis parallel arrangement of pile body, the up end of boss and the up end parallel and level of pile body, the lower terminal surface parallel and level of lower terminal surface and the pile body of boss, the boss contracts gradually towards the pile body along its mesa. The utility model discloses improve precast concrete tubular pile's bearing capacity simultaneously at guarantee pile convenience.

Description

Precast concrete tubular pile

Technical Field

The utility model belongs to the technical field of the building, concretely relates to precast concrete tubular pile.

Background

The precast concrete tubular pile is a basic component in building engineering, and has the advantages of high single-pile bearing capacity, high construction speed, short construction period, low cost and the like. The outer wall of the existing precast concrete pipe pile is provided with circumferential bulges, also called bamboo joint piles, and the precast concrete pipe pile is widely applied to soft soil areas along the sea. And the soil layer distribution characteristics in soft soil area are that it is thicker to coat soft soil layer, and the bearing layer is darker, and foundation soil moisture content is high, and the bearing capacity is lower, has hard and the not good problem of stability when piling.

The patent application document (application number: 201720274712.1) in China discloses a partially prestressed concrete bamboo joint pile, which comprises a cylindrical pile body, wherein the pile body is provided with an inner cavity, a plurality of plate-shaped bosses are arranged on the outer wall of the pile body, the length directions of the bosses are consistent with the axial direction of the pile body, the bosses are uniformly distributed along the circumferential direction of the pile body, gaps are formed among the bosses, the bosses can play a role in increasing the strength of the pile body, and the bamboo joint pile can be conveniently driven into a soil layer. However, in the technical scheme, the bosses are arranged at intervals, so that the processing and forming are not convenient, the increase of the strength of the pile body is limited, the bearing capacity of the friction type pile is not improved, and the improvement is needed urgently.

Disclosure of Invention

The utility model discloses to the above-mentioned problem that prior art exists, provide a precast concrete tubular pile, the utility model aims to solve the technical problem that: how to improve the bearing capacity of precast concrete tubular pile when guaranteeing the pile driving convenience.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a precast concrete tubular pile, includes the hollow tube-shape pile body, be equipped with a plurality of bosss of arranging along pile body circumference interval on the outer wall of pile body, its characterized in that, the boss be rectangular form and with the axis parallel arrangement of pile body, the up end of boss and the up end parallel and level of pile body, the lower terminal surface parallel and level of lower terminal surface and the pile body of boss, the boss contracts gradually towards the pile body along its mesa.

The boss is a long-strip-shaped boss which continuously extends from the upper end face of the pile body to the lower end face of the pile body, so that the strength of the pile body is obviously improved, meanwhile, the contact area between the outer wall of the pile body and soil is increased, and the bearing capacity of the pile body is effectively improved. The boss is arranged towards the structure of the pile body along the table top, so that the soil can be in full contact with the outer wall of the pile body conveniently, and the pile body can be driven into the soil layer conveniently. Compare boss structure among the prior art, the bearing capacity of precast concrete tubular pile can be improved simultaneously in the boss in this patent in the convenience of guaranteeing the pile.

In the precast concrete tubular pile, the table top of the boss is an outward convex cambered surface, and the two long side walls of the boss are inclined straight surfaces. The boss is simple in structural design and convenient to mold and prepare. The table top is a convex cambered surface, so that the pile body can be conveniently driven into a soil layer, the contact area between the soil and the table top can be increased, and the bearing capacity of the pile body is improved.

In the precast concrete tubular pile, the bosses are uniformly arranged at intervals along the circumferential direction of the pile body. The pile driving is convenient, the stable stress of the pile body can be ensured, and the bearing capacity of the pile body can be ensured.

In the precast concrete tubular pile, drain holes are formed between adjacent bosses on the pile body. The drainage holes can drain the pore water in the soil in the inner cavity out of the pile body, so that the bearing capacity of the pile body is guaranteed, and the consolidation of the soft soil foundation is accelerated.

In the precast concrete tubular pile, the drain hole is a tapered hole, and the inner end aperture of the drain hole is larger than the outer end aperture of the drain hole. The hole diameter of the drain hole on the inner wall of the pile body is larger than that of the drain hole on the outer wall of the pile body, so that the inner hole can be effectively prevented from being blocked, and the drainage is ensured to be smooth.

In the precast concrete tubular pile, an annular bulge is arranged at the outer hole edge of the drain hole. The strength of the pile body, particularly the strength of the drainage hole can be improved, and the stability and the bearing capacity of the pile body are guaranteed.

Compared with the prior art, the utility model has the advantages of it is following:

1. the long strip-shaped boss is arranged on the outer wall of the pile body along the axial direction, the contact area between the outer wall of the pile body and soil is increased, the bearing capacity of the pile body is effectively improved, and meanwhile, the boss is arranged towards the structure in the pile body along the table top of the boss, so that the pile body is conveniently driven into a soil layer.

2. And drain holes are formed between adjacent bosses on the pile body, so that pore water in soil in the inner cavity can be drained out of the pile body, the bearing capacity of the pile body is guaranteed, and the consolidation of a soft soil foundation is accelerated.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment.

FIG. 2 is a sectional view of the first embodiment.

Fig. 3 is a schematic perspective view of the second embodiment.

FIG. 4 is a sectional view of the second embodiment.

In the figure, 1, a pile body; 2. a boss; 21. a table top; 22. a long side wall; 3. a drain hole; 4. an annular protrusion.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 and fig. 2, this embodiment includes hollow cylindric pile body 1, be equipped with a plurality of bosss 2 along the even interval arrangement of pile body 1 circumference on the outer wall of pile body 1, boss 2 is rectangular form and with pile body 1's axis parallel arrangement, the up end of boss 2 and pile body 1's up end parallel and level, the lower terminal surface of boss 2 and pile body 1's lower terminal surface parallel and level, boss 2 is the rectangular form boss 2 that extends to pile body 1's lower terminal surface from pile body 1's up end continuous promptly, show improvement pile body 1's intensity, increase the area of contact of pile body 1's outer wall and soil simultaneously, effectively improve pile body 1's bearing capacity. The boss 2 gradually retracts towards the pile body 1 along the table-board 21, so that soil can be in full contact with the outer wall of the pile body 1, and the pile body 1 can be driven into the soil conveniently.

The mesa 21 of boss 2 is the cambered surface of evagination, both is convenient for drive pile body 1 into the soil layer, can increase the area of contact of soil and mesa 21 again, improves the bearing capacity of pile body 1. The two long side walls 22 of the boss 2 are inclined straight surfaces, and the boss 2 is simple in structural design and convenient to mold and manufacture. The table-board 21 is a convex cambered surface.

The drain holes 3 are formed between the adjacent bosses 2 on the pile body 1, and the drain holes 3 can drain pore water in soil in the inner cavity out of the pile body 1, so that the bearing capacity of the pile body 1 is guaranteed. The drain hole 3 is a taper hole, the inner end aperture of the drain hole 3 is larger than the outer end aperture of the drain hole 3, namely the aperture of the drain hole 3 on the inner wall of the pile body 1 is larger than the aperture of the drain hole on the outer wall of the pile body 1, so that the inner hole can be effectively prevented from being blocked, and the drainage is ensured to be smooth. The outer hole edge of the drain hole 3 is provided with the annular bulge 4, so that the strength of the pile body 1, particularly the strength of the drain hole 3 can be improved, and the stability and the bearing capacity of the pile body 1 can be guaranteed.

Example two

The technical solution of the present embodiment is substantially the same as that of the first embodiment, and the difference is that, as shown in fig. 3 and 4, the number of the bosses 2 of the present embodiment is at least four, and is a double number, so as to facilitate the arrangement of the drainage holes 3. The adjacent bosses 2 and the outer wall of the pile body 1 form a strip-shaped groove, the drain holes 3 are divided into a plurality of groups of drain holes which are arranged along the axial direction of the pile body 1, and each group of drain holes are positioned on the same horizontal plane. The number of the drain holes in each group of drain holes is half of that of the bosses 2, the drain holes 3 in the same group are positioned in different grooves, and two adjacent drain holes 3 in the same group of drain holes are respectively arranged in the grooves at two sides of the same groove, namely the drain holes in the same group of drain holes are arranged in the non-adjacent grooves. Meanwhile, the drain holes 3 in the two adjacent groups of drain holes are arranged in a staggered mode, so that the strength of the pile body 1 can be further improved and the bearing capacity of the pile body 1 can be guaranteed when the drainage effect of the pile body 1 is guaranteed.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although 1, the pilings are used more herein; 2. a boss; 21. a table top; 22. a long side wall; 3. a drain hole; 4. annular projection, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a precast concrete tubular pile, includes hollow tube-shape pile body (1), be equipped with on the outer wall of pile body (1) along a plurality of bosss (2) that pile body (1) circumference interval was arranged, its characterized in that, boss (2) are rectangular form and with the axis parallel arrangement of pile body (1), the up end of boss (2) and the up end parallel and level of pile body (1), the lower terminal surface of boss (2) and the lower terminal surface parallel and level of pile body (1), boss (2) are followed its mesa (21) and are retracted gradually towards pile body (1).

2. The precast concrete tubular pile of claim 1, wherein the table top (21) of the boss (2) is a convex arc surface, and the two long side walls (22) of the boss (2) are inclined straight surfaces.

3. The precast concrete tubular pile of claim 2, wherein the bosses (2) are uniformly spaced along the circumference of the pile body (1).

4. The precast concrete tubular pile of any one of claims 1 to 3, wherein a drain hole (3) is formed between adjacent bosses (2) on the pile body (1).

5. The precast concrete tubular pile of claim 4, wherein the drainage hole (3) is a tapered hole, and the inner end of the drainage hole (3) has a larger diameter than the outer end of the drainage hole (3).

6. The precast concrete tubular pile of claim 4, wherein the outer hole edge of the drainage hole (3) is provided with an annular protrusion (4).