CN217710686U

CN217710686U - Double static pressure belt steel core prestressed concrete pipe pile

Info

Publication number: CN217710686U
Application number: CN202220933458.2U
Authority: CN
Inventors: 张凤祥; 陈国志; 寇举安; 李伟涛; 李柯含; 周齐勇
Original assignee: Shenzhen Beidou Information Technology Co ltd; Horizon Geotechnical Engineering Co ltd Guangzhou
Current assignee: Shenzhen Beidou Information Technology Co ltd; Horizon Geotechnical Engineering Co ltd Guangzhou
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-11-01
Anticipated expiration: 2032-04-22

Abstract

The utility model belongs to the technical field of the technique of building engineering and specifically relates to a two static pressure belted steel core prestressed concrete pipe piles are related to, it includes the multisection pile body, sets up the steel core between two adjacent sections pile body, the steel core activity peg graft in the pile body, be provided with the base on the steel core, the base is located between two adjacent sections pile body. The utility model discloses have the effect that improves pile body bearing capacity.

Description

Double static pressure belt steel core prestressed concrete pipe pile

Technical Field

The utility model belongs to the technical field of building engineering's technique and specifically relates to a two static pressure belted steel core prestressed concrete tubular piles are related to.

Background

The pile is a prefabricated engineering pile, is used as foundation material of building, and is driven into ground by pile driver under the condition of specific geological environment, and can produce stress action in the building and structure. The tubular pile can greatly reduce the cost of the foundation and has enough strength, so the tubular pile is widely applied to the engineering foundation fields of railways, roads and bridges, ports, wharfs, water conservancy, municipal administration, buildings, large-scale equipment and the like.

The pile body of the prestressed concrete pipe pile is good in quality, strong in bearing capacity controllability and good in soil layer penetrating capacity, but if high single-pile bearing capacity is required to be achieved or the pile body needs to penetrate through a deep coarse sand layer or other hard interlayers in a stratum, the pile sinking capacity of a piling machine is high, meanwhile, the bearing capacity of the pile body of the precast pile needs to be matched with the pile body, and the two requirements are met simultaneously. The prestressed concrete pipe pile has the advantages of relatively high single-pile bearing capacity, low engineering cost, short construction period, strong penetrating capacity, safe and reliable pile body quality and the like, and is widely applied to actual engineering projects. However, after pile splicing, the high-strength concrete prestressed pipe pile is difficult to penetrate through a sand layer and only can take lower bearing capacity due to insufficient pile sinking capability of a piling machine or insufficient pile body strength when pile sinking is constructed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses problem to prior art provides a two static pressure area steel core prestressed concrete tubular piles, aims at solving prior art's technical problem.

The utility model provides a pair of two static pressure area steel core prestressed concrete tubular piles adopts following technical scheme:

a double static pressure belt steel core prestressed concrete pipe pile comprises a plurality of sections of pile bodies and a steel core arranged between two adjacent sections of pile bodies, wherein the steel core is movably inserted into the pile bodies, a base is arranged on the steel core, and the base is positioned between the two adjacent sections of pile bodies.

Preferably, the base is flush with the outer surface of the pile body.

Preferably, the distance between the side wall of the steel core and the inner wall of the pile body ranges from 2mm to 3mm.

Preferably, the length of the steel core ranges from 180 mm to 220mm, and the thickness of the base ranges from 18 mm to 22mm.

Preferably, the base is connected with the pile body through welding.

Preferably, the outer diameter of the pile body ranges from 180 mm to 200mm, and the inner diameter of the pile body ranges from 80 mm to 100mm.

Preferably, a plurality of connecting rods are arranged on the base, an insertion groove is formed in the end face of the pile body, and the connecting rods are in insertion fit with the insertion groove.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the upper end of the lower pile body is inserted into the steel core, the lower end of the upper pile body is inserted after being aligned with the steel core, the upper pile body and the lower pile body are connected through the steel core and a steel core middle base, and then the outer ring is welded into a whole, so that the strength of the pile body is improved, and the bearing capacity of the pile body is improved.

2. When pile extension welding, the connecting rod is inserted in the inserting groove to enable the upper pile body and the lower pile body to improve stability, and the connecting strength between two adjacent pile bodies is improved after pile extension is completed.

Drawings

Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.

Fig. 2 is a schematic perspective view of embodiment 1 of the present invention.

Fig. 3 is a schematic view of a combination of a pile body and a pile machine in embodiment 1 of the present invention.

Fig. 4 is a schematic view of the overall structure of embodiment 2 of the present invention.

In the figure: 1. a pile body; 11. inserting grooves; 2. a steel core; 21. a base; 22. a connecting rod; 3. an oil cylinder; 4. an outer sleeve; 5. an inner pressure lever.

Detailed Description

The present invention is described in further detail below with reference to fig. 1-4.

Example 1: the utility model discloses implement 1 and disclose a two static pressure area steel core prestressed concrete pipe piles, as shown in fig. 1-2, including multisection pile body 1, set up steel core 2 between two adjacent sections pile body 1, pile body 1 is cylindrical cavity setting, the both ends of pile body 1 link up, steel core 2 is cylindrical setting, steel core 2 activity is pegged graft in pile body 1, a part of steel core 2 is located pile body 1, another part of steel core 2 is located adjacent pile body 1, the welding has base 21 on the steel core 2, base 21 is located the middle part position of steel core 2, base 21 is circular setting, base 21 is coaxial with steel core 2, base 21 is located between two adjacent sections pile body 1, the both sides surface that base 21 is relative laminates the terminal surface that is close to in two adjacent sections pile body 1 respectively, the border of base 21 is parallel and level with the surface of pile body 1 mutually, pass through welded connection between base 21 and the pile body 1.

Referring to fig. 1 and 2, the outer diameter of the pile body 1 ranges from 180 mm to 200mm, and the inner diameter of the pile body 1 ranges from 80 mm to 100mm. In the present embodiment, the outer diameter of pile 1 is preferably 200mm, and the inner diameter of pile 1 is preferably 100mm. The length of the steel core 2 ranges from 180 to 220mm and the thickness of the base 21 ranges from 18 to 22mm, in this embodiment the length of the steel core 2 is preferably 200mm and the thickness of the base 21 is preferably 20mm. The distance between the side wall of the steel core 2 and the inner wall of the pile body 1 is in the range of 2-3mm, and in this embodiment, the distance between the side wall of the steel core 2 and the inner wall of the pile body 1 is preferably 2.5mm.

Referring to fig. 1 and 3, in addition, a pile driver is required to be used during pile sinking, an oil cylinder 3 is fixedly installed on the pile driver, an outer sleeve 4 is fixedly installed at one end, close to the pile body 1, of the oil cylinder 3, the outer sleeve 4 is attached to the top end of the pile body 1, an inner pressure rod 5 is coaxially and fixedly connected with a piston rod of the oil cylinder 3, the inner pressure rod 5 abuts against the pile body 1, when the pile is sunk, the pile body 1 is firstly refuted from a stacking point by a crane and is horizontally lifted to the position close to a pile frame, and then a pile lifting heavy hook and a winch which are specially arranged on the pile driver are used for lifting the pile in place. After the pile body 1 is lifted to be in a vertical state, the upper end of the pile body 1 is sleeved with the inherent pile feeder at the lower part of the hammer head, then the pile tip is accurately placed on the pile position, the piston rod of the oil cylinder 3 extends out, and pressure is applied to the pile body 1 through the inner pressure rod 5, so that the pile body 1 is sunk into a soil layer, and the verticality of the pile body is checked and straightened. When pile splicing is carried out, the lower pile body 1 is cleaned by a steel brush, a positioning plate is added, the upper pile body 1 is hung on the lower pile body 1, and the upper pile and the lower pile are concentrically spliced by the positioning plate. Meanwhile, the verticality of the pile body 1 is corrected and adjusted by utilizing theodolites at the two directions of the front side of the pile machine. The upper pile body 1 is straightened to lead the axes of the upper pile body and the lower pile body 1 to be consistent, and then the upper pile body and the lower pile body 1 are welded together.

The embodiment of the utility model provides a two static pressure area steel core 2 prestressed concrete pipe piles's implementation principle does: the upper end of the lower pile body 1 is inserted into the steel core 2, the lower end of the upper pile body 1 is inserted after being aligned with the steel core 2, the upper pile body 1 and the lower pile body 1 are connected through the steel core 2 and a middle base 21 of the steel core 2, and then the outer ring is welded into a whole, so that the strength of the pile body is improved, and the bearing capacity of the pile body is improved.

Example 2: referring to fig. 4, with embodiment 1's difference, the welding has many connecting rods 22 on the base 21, many connecting rods 22 set up along base 21's circumferencial direction interval, a plurality of inserting grooves 11 have been seted up to pile body 1's terminal surface, a plurality of inserting grooves 11 are corresponding with many connecting rods 22's position, connecting rod 22 and inserting groove 11 cooperation of pegging graft, when pile extension welding, connecting rod 22 pegs graft and makes about pile body 1 improvement stability in inserting groove 11 internal energy to improve the joint strength between two adjacent sections pile bodies 1 after pile extension is accomplished.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, but all the technical solutions of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a two static pressure area steel core prestressed concrete pipe piles which characterized in that: the steel core pile comprises a plurality of sections of pile bodies (1) and a steel core (2) arranged between two adjacent sections of pile bodies (1), wherein the steel core (2) is movably inserted into the pile bodies (1), a base (21) is arranged on the steel core (2), and the base (21) is positioned between two adjacent sections of pile bodies (1).

2. The double static belt steel core prestressed concrete pipe pile of claim 1, wherein: the base (21) is flush with the outer surface of the pile body (1).

3. The double static belt steel core prestressed concrete pipe pile of claim 1, wherein: the distance between the side wall of the steel core (2) and the inner wall of the pile body (1) ranges from 2mm to 3mm.

4. The double static pressure belt steel core prestressed concrete pipe pile of claim 1, wherein: the length range of the steel core (2) is 180-220mm, and the thickness range of the base (21) is 18-22mm.

5. The double static belt steel core prestressed concrete pipe pile of claim 1, wherein: the base (21) is connected with the pile body (1) through welding.

6. The double static pressure belt steel core prestressed concrete pipe pile of claim 1, wherein: the outer diameter range of the pile body (1) is 180-200mm, and the inner diameter range of the pile body (1) is 80-100mm.

7. The double static belt steel core prestressed concrete pipe pile of claim 1, wherein: the pile is characterized in that a plurality of connecting rods (22) are arranged on the base (21), an insertion groove (11) is formed in the end face of the pile body (1), and the connecting rods (22) are in insertion fit with the insertion groove (11).