CN215252810U

CN215252810U - Hollow sandwich steel pipe concrete pile

Info

Publication number: CN215252810U
Application number: CN202121596231.5U
Authority: CN
Inventors: 周军; 徐长进; 白久林; 孙嘉辰; 李雪刚; 张建; 冯明富; 李文学
Original assignee: China Construction Science and Industry Corp Ltd
Current assignee: China Construction Science and Industry Corp Ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2021-12-21
Anticipated expiration: 2031-07-13

Abstract

The utility model provides a pair of interbedded steel pipe concrete pile of cavity belongs to site operation technical field, and interbedded steel pipe concrete pile of cavity includes: a pipe body having an inner pipe and an outer pipe; a first accommodating cavity is formed between the inner pipe and the outer pipe; the cone is a conical steel member and is arranged at the lower end of the pipe body; a second accommodating cavity is formed in the cone; the steel pipe concrete pile with the hollow interlayer of the utility model ensures that the thickness of the steel of the inner pipe and the outer pipe of the pipe body does not need to be very thick, and the poured solidification material enhances the compressive strength of the steel pipe concrete pile with the hollow interlayer and improves the rigidity of the steel pipe concrete pile with the hollow interlayer, so that the steel pipe concrete pile with the hollow interlayer is not easy to bend in the beating process; meanwhile, the hollow sandwich steel pipe concrete pile can be disassembled for use for many times, and still has good mechanical property after being rebuilt.

Description

Hollow sandwich steel pipe concrete pile

Technical Field

The utility model relates to a site operation technical field, concretely relates to interbedded steel pipe concrete pile of cavity.

Background

At present, the portal rigid frame structure foundation suitable for quick assembly and disassembly mostly adopts steel pipe concrete piles, ground screws and the like with hollow interlayers;

in the hollow sandwich steel pipe concrete pile in the prior art, a foundation per se belongs to a pure steel component, a flange plate with bolt holes is welded at the upper end of a polygonal steel pipe, and meanwhile, a plurality of stiffening plates are welded around the joint of the flange plate and the steel pipe.

However, in this structure, in order to meet the requirements of the pile body on compression resistance and bending resistance, the steel pipe needs to be made of thicker steel, and the processing cost is increased.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the requirement in order to satisfy pile body resistance to compression and buckling among the prior art, this steel pipe need select thicker steel, improves material cost's defect to a hollow sandwich steel pipe concrete pile is provided.

In order to solve the technical problem, the utility model provides a hollow sandwich steel pipe concrete pile, include:

a pipe body having an inner pipe and an outer pipe; a first accommodating cavity is formed between the inner pipe and the outer pipe;

the cone is a conical steel member and is arranged at the lower end of the pipe body; a second accommodating cavity is formed in the cone; the second accommodating cavity is communicated with the first accommodating cavity;

and a solidification material is poured in the first accommodating cavity and the second accommodating cavity.

Preferably, the setting material is concrete.

Preferably, the method further comprises the following steps:

a plurality of internally threaded sleeves; embedded in the concrete; the interior of the internal thread sleeve is provided with internal threads.

Preferably, the length of the internal thread in the internal thread sleeve is greater than or equal to 10 mm.

Preferably, the wall thickness of the inner tube is smaller than the wall thickness of the outer tube.

Preferably, the wall thickness of the inner tube is 1mm-5 mm.

Preferably, the wall thickness of the outer tube is 5mm-12 mm.

As a preferred scheme, the upper end of the pipe body is connected with a supporting column; one end of the support column close to the pipe body is provided with a connecting flange; the connecting flange is matched with the internal thread sleeve for use.

The utility model discloses technical scheme has following advantage:

1. the utility model provides an interbedded steel pipe concrete pile of cavity, include: a tube body and a cone; the tube body is internally provided with a first accommodating cavity, and the cone body is internally provided with a second accommodating cavity; pouring a solidification material in the first accommodating cavity and the second accommodating cavity; the thickness of the steel of the inner pipe and the outer pipe of the pipe body does not need to be very thick, the compressive strength of the steel pipe concrete pile of the hollow interlayer is enhanced by the poured solidification material, the rigidity of the steel pipe concrete pile of the hollow interlayer is improved, and the steel pipe concrete pile of the hollow interlayer is not easy to bend in the beating process; meanwhile, the hollow sandwich steel pipe concrete pile can be disassembled for use for many times, and still has good mechanical property after being rebuilt.

2. The utility model provides a hollow sandwich steel pipe concrete pile, the solidification material is concrete; by adopting the steel tube concrete form, the compressive capacity of concrete and the tensile capacity of steel are fully utilized, the strength of the pile body is increased, and the reduction of the mechanical property of the member caused by the buckling of the pile body during construction is reduced.

3. The utility model provides a hollow sandwich steel pipe concrete pile, the lower part tip adopts the centrum form, squeezes into the convenience.

4. The utility model provides a hollow sandwich steel pipe concrete pile, the template of inner core tubular product's primary action for supporting concrete placement can adopt thinner steel, and outside steel pipe both will retrain the concrete, and the pile body of also protecting is unlikely to damage when transportation and construction, and thickness is thicker.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a three-dimensional structure of a hollow sandwich steel pipe concrete pile of the present invention.

Fig. 2 is a schematic view of the cross-sectional structure of the hollow sandwich steel pipe concrete pile of the present invention.

Description of reference numerals:

1. a pipe body; 2. a cone; 3. concrete; 4. an inner tube; 5. an outer tube; 6. an internally threaded sleeve; 7. a support pillar; 8. a connecting flange; 9. and (4) bolts.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The hollow sandwich steel pipe concrete pile provided by the embodiment, as shown in fig. 1, includes: a tube body 1 and a cone 2; the hollow sandwich steel pipe concrete pile has the characteristics of simple structure, high strength and rigidity, convenience in transportation, fatigue resistance and good corrosion resistance; the prefabricated steel pipe is prefabricated in a factory and installed on site, can be quickly disassembled and assembled, and can be recycled for multiple times;

as shown in fig. 2, the pipe body 1 has an inner pipe 4 and an outer pipe 5; a first accommodating cavity is arranged between the inner pipe 4 and the outer pipe 5; a cone 2 is arranged at the lower end of the pipe body 1, the cone 2 is a conical steel member, and a second accommodating cavity is formed in the cone 2; the cone is adopted, the soil body can be conveniently driven, and the settlement generated in the use process can be effectively reduced in the soil squeezing mode.

The first accommodating cavity and the second accommodating cavity are communicated; pouring a solidification material in the first accommodating cavity and the second accommodating cavity, wherein concrete 3 is selected in the embodiment; the solidified concrete 3 can bear pressure, the outer pipe 5 restrains the concrete 3 and increases the pressure resistance of the concrete, and the pipe body 1 is matched with the concrete 3 to integrally strengthen the pile body strength of the steel pipe concrete pile with the hollow interlayer;

an internal thread sleeve 6 is embedded in the concrete 3 at the upper end of the pipe body 1, and internal threads are arranged in the internal thread sleeve 6; the length of the internal thread sleeve 6 is calculated according to the tensile force required by the connecting bolt 9, and the size of the inner diameter is determined according to the corresponding bolt 9; the length of the internal thread of the internally threaded sleeve 6 should be greater than or equal to 10mm to ensure that the bolt 9 can be stably connected. The number and the positions of the internal thread sleeves 6 are determined according to the number and the positions of the connecting node calculation bolts 9; meanwhile, the internally threaded sleeve 6 needs to be subjected to rust prevention treatment to increase corrosion resistance.

The inner pipe 4 is a thin-wall round steel pipe with the wall thickness of 1mm-5mm, the thickness of the steel of the outer pipe 5 is larger than that of the steel of the inner pipe 4, and 5mm-12mm is selected. The cone body is obtained by processing steel with the same thickness as the outer tube 5. The length of the pile body is determined according to the integral calculation of the structure.

The pipe body 1 is divided into an inner pipe 4 and an outer pipe 5, the materials are conveniently obtained, the interior is hollow, concrete 3 is filled between two layers of steel pipes, and the pipe has good pressure resistance. Due to the effect of the concrete 3, the wall thickness of the steel pipe can be selected to be thinner and cannot be buckled in the piling and normal use processes. A conical steel member is welded at the bottom of the pile so as to facilitate the foundation to be driven into the soil. The whole foundation can be processed and prefabricated in a factory, and can be directly transported to a construction site during construction, so that the construction is convenient and fast.

During manufacturing, a partition plate is arranged at the lower end of the inner pipe 4 to prevent the concrete 3 from entering the inner pipe 4 and prevent the concrete 3 from entering the inner core, and the concrete 3 is tamped when being poured so as to ensure that the concrete 3 has higher strength. The concrete 3 compression resistance is fully utilized in the scheme, the rigidity and the strength of the pile body are enhanced to a certain extent, and the use of steel is reduced. In the pouring process of the concrete 3, the internal thread sleeve 6 also needs to be sealed, so that the concrete 3 is prevented from entering and the screwing of the bolt 9 is prevented from being influenced.

A support pillar 7 is connected to the upper end of the pipe body, and a connecting flange 8 is arranged at one end, close to the hollow sandwich steel pipe concrete pile, of the support pillar 7; the connecting flange 8 is matched with the connecting sleeve for use, the connecting flange 8 is connected with the internal thread sleeve 6 through the bolt 9, the hollow sandwich steel pipe concrete pile is connected with the support column 7, and the connecting mode is reliable.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A hollow sandwich steel pipe concrete pile is characterized by comprising:

a pipe body (1) having an inner pipe (4) and an outer pipe (5); a first accommodating cavity is arranged between the inner pipe (4) and the outer pipe (5);

the cone (2) is a conical steel component and is arranged at the lower end of the pipe body (1); the cone (2) is internally provided with a second accommodating cavity; the second accommodating cavity is communicated with the first accommodating cavity;

2. A hollow sandwich steel pipe concrete pile according to claim 1, characterised in that said setting material is concrete (3).

3. The hollow sandwich steel pipe concrete pile according to claim 2, further comprising:

a plurality of internally threaded sleeves (6); is embedded in the concrete (3); the inner part of the internal thread sleeve (6) is provided with internal threads.

4. A hollow sandwich steel pipe concrete pile according to claim 3, characterised in that the length of the internal thread in the internally threaded sleeve (6) is 10mm or more.

5. The hollow sandwich steel pipe concrete pile according to claim 1, characterized in that the wall thickness of the inner pipe (4) is smaller than the wall thickness of the outer pipe (5).

6. Hollow sandwich steel pipe concrete pile according to claim 5, characterised in that the wall thickness of the inner pipe (4) is 1-5 mm.

7. Hollow sandwich steel pipe concrete pile according to claim 6, characterised in that the wall thickness of the outer pipe (5) is 5-12 mm.

8. The hollow sandwich steel pipe concrete pile according to claim 4, wherein a support column (7) is connected to the upper end of the pipe body; a connecting flange (8) is arranged at one end of the supporting column (7) close to the pipe body; the connecting flange (8) is matched with the internal thread sleeve for use.