CN219033210U

CN219033210U - Prefabricated liner tube for plugging base well wall hole during pile foundation pouring

Info

Publication number: CN219033210U
Application number: CN202220936306.8U
Authority: CN
Inventors: 许永环; 王彬; 何勤
Original assignee: Great Group Construction Co ltd
Current assignee: Great Group Construction Co ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2023-05-16
Anticipated expiration: 2032-04-22

Abstract

The utility model discloses a prefabricated liner tube for plugging a wall hole of a base well when a pile foundation is poured, wherein the prefabricated liner tube is prefabricated and formed by reinforced concrete according to the size and the position of the hole, and has a structure fixed with a reinforcement cage. The pipe body of the prefabricated liner pipe is provided with axial through holes which are axially preset at equal intervals and used for penetrating the axial threaded steel bars of the steel reinforcement cage. The aperture of the axial through hole is larger than the diameter of the axial twisted steel of the steel reinforcement cage, so that concrete can be poured into a gap between the axial twisted steel and the inner wall of the axial through hole. The advantages are that: the anti-sedimentation acting force between the pile foundation of the section where the prefabricated liner tube is located and the well wall is enhanced while the well wall cavity is plugged.

Description

Prefabricated liner tube for plugging base well wall hole during pile foundation pouring

Technical Field

The utility model relates to a prefabricated liner tube for plugging a base well wall hole when a pile foundation is poured, and belongs to the technical field of building construction.

Background

The pouring of the building pile foundation is to manufacture a reinforcement cage with the diameter slightly smaller than Yu Jijing after a pile foundation base well is drilled, then to hoist the reinforcement cage, to vertically insert the reinforcement cage into the base well, to pour concrete into the base well, and to form the reinforced concrete pile foundation after the concrete is solidified. A plurality of vertical screw-thread steel bars are arranged around the steel bar cage, and the plurality of axial screw-thread steel bars are welded and fixed by a plurality of circular steel bar hoops according to a certain interval to form the steel bar cage.

In the construction process of building pile foundation well construction, the well wall of the pile foundation well often has a cavity formed by artificial factors or geological factors, and the cavity has little influence on well construction, but when pile foundation is cast in later period, a large amount of poured concrete can flow into the cavity, so that huge waste is caused, and even pile foundation casting is difficult to finish. In the face of the situation, the traditional construction mode is to manufacture an iron sheet liner tube with the diameter equivalent to that of a base well and the length larger than that of the vertical direction of a cavity, and the cavity is shielded by the iron sheet liner tube lining the well wall. Thus, the concrete is prevented from flowing into the cavity when the concrete is poured.

The advantage of using the iron sheet liner tube to shelter from the cavity is simple and convenient and weight is lighter relatively, but the problem is that iron sheet liner tube pipe wall surface is smooth, not only can not form structural force between liner tube outer wall and the earth of wall of a well, but also lack sufficient structural force between liner tube inner wall and the concrete of pouring for the pile foundation loses the effort of anti subsidence between this section and stratum, seriously influences the bearing effect of pile foundation to superstructure.

Disclosure of Invention

The utility model aims to solve the technical problems that: how to prevent concrete from flowing into a cavity existing on a well wall when a pile foundation is poured, and keep the pile foundation and the periphery of the well wall with due anti-sedimentation force.

Aiming at the problems, the technical scheme provided by the utility model is as follows:

the utility model provides a be used for plugging the prefabricated bushing pipe of base well wall hole when pouring the pile foundation, prefabricated bushing pipe is prefabricated shaping by reinforced concrete according to the size and the position of hole, and it has the structure fixed with the steel reinforcement cage.

Further, the pipe body of the prefabricated liner pipe is provided with axial through holes which are axially preset at equal intervals and used for penetrating through axial threaded steel bars of the steel reinforcement cage.

Further, the aperture of the axial through hole is larger than the diameter of the axial twisted steel of the steel reinforcement cage, so that concrete can be poured into a gap between the axial twisted steel and the inner wall of the axial through hole.

Further, a plurality of through grooves which are axially preset at equal intervals and are used for accommodating axial screw-thread steel bars of the steel reinforcement cage are formed in the inner wall of the prefabricated liner tube.

Further, embedded reinforcement hoops are circumferentially embedded in the inner walls of the two ends of the prefabricated liner tube, and the portions, penetrating through the through grooves, of the reinforcement hoops are used for limiting axial thread reinforcement bars of the reinforcement cage in the through grooves.

Further, a plurality of radial through holes are arranged on the pipe body outside the area of the prefabricated liner pipe which shields the hole of the well wall.

The beneficial effects are that: the anti-sedimentation acting force between the pile foundation of the section where the prefabricated liner tube is located and the well wall is enhanced while the well wall cavity is plugged.

Drawings

FIG. 1 is a schematic perspective view of a prefabricated liner according to example 1;

FIG. 2 is a schematic perspective view of a prefabricated liner according to example 2;

fig. 3 is a schematic perspective view of the prefabricated liner tube of example 2 inserted with axial screw bars;

fig. 4 is a partial schematic view of fig. 3.

In the figure: 1. prefabricating a liner tube; 101. an axial through hole; 102. shielding the borehole wall hole area; 103. a radial through hole; 104. a through groove; 105. embedding reinforcing steel bar hoops; 2. axial screw steel bar.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

example 1

As shown in fig. 1, a prefabricated liner tube 1 for plugging a hole of a wall of a base well when pile foundation is poured is prefabricated and formed by reinforced concrete according to the size of the hole, and has a structure fixed with a reinforcement cage. Thus, compared with a smooth-surfaced iron sheet liner tube, the concrete prefabricated liner tube 1 can be provided with rough inner and outer surfaces, the inner surface of the concrete prefabricated liner tube can be solidified into a whole with poured concrete, and the outer surface of the concrete prefabricated liner tube can form better anti-sedimentation acting force with a well wall.

The pipe body of the prefabricated liner pipe 1 is provided with axial through holes 101 which are axially preset at equal intervals and are used for penetrating the axial screw reinforcement 2 of the reinforcement cage. The prefabricated liner tube 1 can be fixed on the reinforcement cage on the ground, and is convenient to lift and insert into a base well along with the reinforcement cage.

The aperture of the axial through hole 101 is larger than the diameter of the axial deformed bar 2 of the reinforcement cage, so that concrete can be poured into a gap between the axial deformed bar 2 and the inner wall of the axial through hole 101, and the axial deformed bar 2 and the prefabricated liner tube are solidified together.

A plurality of radial through holes 103 are arranged on the pipe body outside the area 102 where the prefabricated liner pipe 1 shields the borehole wall. Thus, when pouring concrete into the prefabricated liner 1, the concrete can be filled into the gaps existing between the prefabricated liner 1 and the well wall except the holes of the well wall through a plurality of radial through holes 103 arranged on the pipe body of the prefabricated liner 1. Furthermore, the provision of radial through holes 103 also reduces the weight of the prefabricated liner 1.

The specific implementation method comprises the following steps: when the reinforcement cage is manufactured, the axial threaded steel bars 2 are firstly inserted into the axial through holes 101 of the prefabricated liner tube 1 one by one, then the annular threaded steel bars 2 are welded into the reinforcement cage at the two ends of the prefabricated liner tube 1 by using the annular steel bar hoops, and meanwhile, the prefabricated liner tube 1 is preliminarily fixed on the reinforcement cage by respectively welding the annular steel bar hoops at the two ends of the prefabricated liner tube 1. After the reinforcement cage and the prefabricated liner tube 1 are inserted into the base well, when pile foundation concrete is poured, the concrete is poured into a gap between the axial thread steel bars 2 and the inner wall of the axial through hole 101, and the axial thread steel bars 2 and the prefabricated liner tube are solidified together. When the concrete is poured into the prefabricated lining pipe 1, the concrete can be filled into gaps existing between the prefabricated lining pipe 1 and the well wall except the holes of the well wall through a plurality of radial through holes 103 formed in the pipe body of the prefabricated lining pipe 1. This allows the section of prefabricated liner 1 to be consolidated with the entire pile foundation and remain in a proper anti-settling relationship with the entire borehole wall.

Example two

As shown in fig. 2, 3 and 4, the prefabricated liner tube for plugging the wall hole of the base well when pouring pile foundation is different from the first embodiment in that: a plurality of through grooves 104 which are axially preset at equal intervals and are used for accommodating the axial screw bars 2 of the reinforcement cage are arranged on the inner wall of the prefabricated liner tube 1. The inner walls of the two ends of the prefabricated lining pipe 1 are provided with embedded steel bar hoops 105 which are embedded in the circumferential direction, and the parts of the steel bar hoops penetrating through the through grooves 104 are used for limiting the axial threaded steel bars 2 of the steel bar cage in the through grooves 104.

The specific implementation method comprises the following steps: when the reinforcement cage is manufactured, the axial screw reinforcement bars 2 are firstly inserted into the through grooves 104 of the prefabricated liner tube 1 one by one, and then the annular reinforcement bars are hooped at the two ends of the prefabricated liner tube 1 to weld the annular axial screw reinforcement bars 2 into the reinforcement cage. Simultaneously, the axial thread steel bars 2 are welded with the embedded steel bar hoops 105, so that the prefabricated liner tube 1 is primarily fixed on the steel bar cage. After the reinforcement cage and the prefabricated liner tube 1 are inserted into the base well, when pile foundation concrete is poured, the concrete can be directly poured into the through groove 104, so that the axial thread reinforcement 2 and the concrete in the prefabricated liner tube 1 are directly coagulated, and the overall structural force is stronger.

The above embodiments are only for the purpose of more clearly describing the present utility model and should not be construed as limiting the scope of the present utility model, and any equivalent modifications should be construed as falling within the scope of the present utility model.

Claims

1. The utility model provides a be used for plugging the prefabricated bushing pipe of base well wall hole when pouring pile foundation, its characterized in that: the prefabricated liner tube (1) is prefabricated and formed by reinforced concrete according to the size and the position of the hole, and has a structure fixed with a reinforcement cage; a plurality of radial through holes (103) are arranged on the pipe body outside the area (102) where the prefabricated liner pipe (1) shields the hole of the well wall.

2. The prefabricated liner for plugging a borehole wall hole of a base well when casting pile foundation according to claim 1, wherein: the pipe body of the prefabricated liner pipe (1) is provided with axial through holes (101) which are axially preset at equal intervals and used for penetrating through the axial screw-thread steel bars (2) of the steel reinforcement cage.

3. The prefabricated liner for plugging a borehole wall hole of a base well when casting pile foundation according to claim 2, wherein: the aperture of the axial through hole (101) is larger than the diameter of the axial twisted steel (2) of the steel reinforcement cage, so that concrete can be poured into a gap between the axial twisted steel (2) and the inner wall of the axial through hole (101).

4. The prefabricated liner for plugging a borehole wall hole of a base well when casting pile foundation according to claim 1, wherein: the inner wall of the prefabricated liner tube (1) is provided with a plurality of through grooves (104) which are axially preset at equal intervals and are used for accommodating axial screw-thread steel bars (2) of the steel reinforcement cage.

5. The prefabricated liner for plugging a borehole wall hole of a base well when casting pile foundation according to claim 4, wherein: the inner walls of the two ends of the prefabricated liner tube (1) are provided with embedded reinforcing steel bar hoops (105) which are embedded in the circumferential direction, and the parts of the reinforcing steel bar hoops penetrating through the through grooves (104) are used for limiting the axial threaded reinforcing steel bars (2) of the reinforcing steel bar cage in the through grooves (104).