CN219137651U

CN219137651U - Piston type steel pipe pedestal pile

Info

Publication number: CN219137651U
Application number: CN202320351892.4U
Authority: CN
Inventors: 丁玉国
Original assignee: Shanghai Maifan Construction Engineering Co ltd
Current assignee: Shanghai Maifan Construction Engineering Co ltd
Priority date: 2023-03-01
Filing date: 2023-03-01
Publication date: 2023-06-06
Anticipated expiration: 2033-03-01

Abstract

The utility model discloses a piston type steel pipe pedestal pile, which relates to the technical field of geotechnical engineering and comprises a first steel pipe; the surface mounting of first steel pipe has one-way nozzle, and the inside top of first steel pipe installs the loose steel cap, and the internally mounted of loose steel cap has the slip casting inner tube, and the slip casting sleeve pipe is installed on the top of slip casting inner tube. According to the utility model, the grouting sleeve and the grouting inner pipe are filled with slurry into the piston bag, so that the piston bag can expand and extend to push the piston top disc, the piston transmission rod, the piston bottom disc and the broken earth cone to move, the expansion blades can be expanded to enlarge the contact area with the interior of the pile hole, the stability of the pile hole is improved, the slurry is filled into the first steel pipe, the slurry can be discharged through the one-way nozzle, the slurry is positioned between the steel pipe and the hole pile, the frictional resistance between the steel pipe and the hole pile is increased, the stability of the pile hole pile is improved again, the problem that the construction difficulty of the existing bottom expanding pile is high is solved, and meanwhile, the cost of materials is reduced.

Description

Piston type steel pipe pedestal pile

Technical Field

The utility model belongs to the technical field of geotechnical engineering, and particularly relates to a piston type steel pipe pedestal pile.

Background

The pile has the advantages that the bearing capacity of a single pile is greatly improved compared with that of a straight pile with the same diameter of a pile body, and the main construction method is divided into two types, namely, a drilling machine is used for forming holes, a reinforcement cage is implanted, and concrete is poured into the pile; and the other is hole forming by a drilling machine, and slurry in the prefabricated pile body and the cement mortar replacement hole is implanted, so that the bottom is expanded by grouting.

The club-footed pile comprises a pile body vertically arranged in a drilled hole, a gap is reserved between the whole body of the pile body and the drilled hole, a filling body and a grouting body are filled in the gap, an expanding head is arranged below the pile bottom of the pile body, the expanding head sequentially comprises dry hard concrete, rammed discrete filling materials and compaction soil bodies from top to bottom, the bottom end of the pile body enters the expanding head, and the grouting body is filled between the bottom end of the pile body and the dry hard concrete.

In the device, the stability between the pile body and the drilled hole is improved through the enlarged head at the bottom of the pile body, the dry and hard concrete, the rammed dispersion filling material, the compacted soil body and the like, but the cost of the material is increased, and meanwhile, the construction difficulty is also increased.

Disclosure of Invention

The utility model aims to solve the problems, and provides a piston type steel pipe pedestal pile.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a piston type steel pipe pedestal pile comprises a first steel pipe;

the surface of the first steel pipe is provided with a unidirectional nozzle, the top end of the interior of the first steel pipe is provided with a movable steel cap, the interior of the movable steel cap is provided with a grouting inner pipe, the top end of the grouting inner pipe is provided with a grouting sleeve, the top end of the grouting sleeve is connected with a screw thread, the screw thread is connected with a grouting outer pipe, and the bottom end of the first steel pipe is provided with a head steel plate;

the bottom end of the end socket steel plate is provided with a second steel pipe, the interior of the second steel pipe is provided with a piston bag, the interior of the second steel pipe is provided with a piston top disc, the bottom end of the piston top disc is provided with a piston transmission rod, and the interior of the second steel pipe is provided with a piston outer bag;

the bottom of second steel pipe is installed the third steel pipe, and the inside of third steel pipe is provided with the piston chassis, the surface mounting of third steel pipe has the soil cutting steel rib, and the internally mounted of third steel pipe has the outer bag of club-footed, the tip cone of breaking earth is installed to the bottom of piston chassis, extension blade is installed to the bottom of third steel pipe.

As a further description of the above technical solution:

the grouting inner pipe penetrates through the end socket steel plate to be connected with the inside of the piston bag, and the grouting inner pipe is connected with the piston bag through screw threads.

As a further description of the above technical solution:

the piston transmission rod is connected with the top end of the piston chassis.

As a further description of the above technical solution:

the first steel pipe and the second steel pipe are fixedly connected with two sides of the end socket steel plate respectively.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

according to the utility model, the grouting sleeve and the grouting inner pipe are filled with slurry into the piston bag, so that the piston bag can expand and extend to push the piston top disc, the piston transmission rod, the piston bottom disc and the broken earth cone to move, the expansion blades can be expanded to enlarge the contact area with the interior of the pile hole, the stability of the pile hole is improved, the slurry is filled into the first steel pipe, the slurry can be discharged through the one-way nozzle, the slurry is positioned between the steel pipe and the hole pile, the frictional resistance between the steel pipe and the hole pile is increased, the stability of the pile hole pile is improved again, the problem that the construction difficulty of the existing bottom expanding pile is high is solved, and meanwhile, the cost of materials is reduced.

Drawings

FIG. 1 is a schematic view of a piston type steel pipe pedestal pile according to the present utility model.

Legend description:

1. grouting an outer tube; 2. threading; 3. grouting sleeve; 4. a movable steel cap; 5. grouting an inner pipe; 6. a unidirectional nozzle; 7. a steel plate of the end enclosure; 8. a piston pouch; 9. a piston top plate; 10. a piston rod; 11. an outer bladder of the piston; 12. a piston chassis; 13. expanding the bottom outer bag; 14. cutting soil steel ribs; 15. a broken earth pointed cone; 16. expanding the blade; 17. a first steel pipe; 18. a second steel pipe; 19. and a third steel pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, a piston type steel pipe pedestal pile comprises a first steel pipe 17;

the surface of the first steel pipe 17 is provided with a unidirectional nozzle 6, the inner top end of the first steel pipe 17 is provided with a movable steel cap 4, the inner part of the movable steel cap 4 is provided with a grouting inner pipe 5, the top end of the grouting inner pipe 5 is provided with a grouting sleeve 3, the top end of the grouting sleeve 3 is connected with a screw thread 2, the screw thread 2 is connected with a grouting outer pipe 1, and the bottom end of the first steel pipe 17 is provided with a head steel plate 7;

the bottom end of the end socket steel plate 7 is provided with a second steel pipe 18, a piston bag 8 is arranged in the second steel pipe 18, a piston top disc 9 is arranged in the second steel pipe 18, a piston transmission rod 10 is arranged at the bottom end of the piston top disc 9, and a piston outer bag 11 is arranged in the second steel pipe 18;

the bottom of second steel pipe 18 installs third steel pipe 19, and the inside of third steel pipe 19 is provided with piston chassis 12, the surface mounting of third steel pipe 19 has the soil cutting steel rib 14, and the internally mounted of third steel pipe 19 has the outer bag of expanding, the tip cone 15 of breaking is installed to the bottom of piston chassis 12, the expansion blade 16 is installed to the bottom of third steel pipe 19, the surface of unidirectional nozzle 6 is provided with the baffle of falling triangle-shaped, be convenient for discharge mud, prevent that mud from plugging up unidirectional nozzle 6, one side of slip casting outer tube 1 is connected with the pump body, and the pump body can provide 1.5 MPA's pressure, be convenient for pour into mud into to the inside of piston bag 8, make piston bag 8 expand, be detachable between loose steel cap 4 and the first steel pipe 17, and slip casting inner tube 5 also can dismantle, expansion blade 16 is the bottom with third steel pipe 19 is swing joint.

Further, the grouting inner pipe 5 penetrates through the end socket steel plate 7 to be connected with the inside of the piston bag 8, the grouting inner pipe 5 is connected with the piston bag 8 through the screw threads 2, the surface of the end socket steel plate 7 is provided with a hole groove, the grouting inner pipe 5 is connected with the inside of the hole groove, the surface of the grouting inner pipe 5 above the end socket steel plate 7 is provided with the screw threads 2, and the grouting inner pipe 5 above the end socket steel plate 7 can be detached.

Further, the piston rod 10 is connected to the top end of the piston base 12, and when slurry is injected into the interior of the piston bag 8, the piston bag 8 is inflated, so that the piston top 9, the piston rod 10, the piston base 12, the ground breaking cone 15 and the like can be pushed to move.

Further, the first steel pipe 17 and the second steel pipe 18 are fixedly connected with both sides of the end enclosure steel plate 7, the first steel pipe 17, the second steel pipe 18 and the end enclosure steel plate 7 can be installed and connected by a fixed connection mode such as threaded connection and welding, and the same is true between the third steel pipe 19 and the second steel pipe 18.

Working principle: when the hydraulic grouting device is used, a steel pipe and the like are placed into a foundation through a mechanical arm, a grouting pump is used for injecting slurry into the piston bag 8 through the grouting outer pipe 1 and the grouting inner pipe 5, the piston bag 8 can be expanded, the piston top disc 9, the piston transmission rod 10, the piston bottom disc 12, the broken cone 15 and the like are extruded to move, the expansion blades 16 can be expanded, the contact area with the inside of the foundation can be increased, the stability is improved, the movable steel cap 4 is taken off from the top end of the first steel pipe 17, the grouting inner pipe 5 is taken out from the inside of the first steel pipe 17, the slurry in the first steel pipe 17 is injected into the inside of the first steel pipe 17, the slurry in the first steel pipe 17 can be discharged between the foundation and the steel pipe through the one-way nozzle 6, the friction resistance between the steel pipe and the foundation can be increased, and the stability of the steel pipe can be improved.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. A piston steel pipe pedestal pile comprising a first steel pipe (17), characterized in that;

the surface mounting of first steel pipe (17) has unidirectional nozzle (6), and the inside top of first steel pipe (17) is installed and is moved steel cap (4), the internally mounted of moving steel cap (4) has slip casting inner tube (5), and slip casting sleeve pipe (3) are installed on the top of slip casting inner tube (5), the top of slip casting sleeve pipe (3) is connected with screw thread (2), and screw thread (2) are connected with slip casting outer tube (1), head steel sheet (7) are installed to the bottom of first steel pipe (17);

the bottom end of the seal head steel plate (7) is provided with a second steel pipe (18), the interior of the second steel pipe (18) is provided with a piston bag (8), the interior of the second steel pipe (18) is provided with a piston top disc (9), the bottom end of the piston top disc (9) is provided with a piston transmission rod (10), and the interior of the second steel pipe (18) is provided with a piston outer bag (11);

third steel pipe (19) are installed to the bottom of second steel pipe (18), and the inside of third steel pipe (19) is provided with piston chassis (12), the surface mounting of third steel pipe (19) has soil cutting steel rib (14), and the internally mounted of third steel pipe (19) has outer bag (13) of expanding, tip cone (15) break is installed to the bottom of piston chassis (12), expansion blade (16) are installed to the bottom of third steel pipe (19).

2. A piston steel pipe pedestal pile according to claim 1, characterised in that: the grouting inner pipe (5) penetrates through the end socket steel plate (7) to be connected with the inside of the piston bag (8), and the grouting inner pipe (5) is connected with the piston bag (8) through the screw thread (2).

3. A piston steel pipe pedestal pile according to claim 1, characterised in that: the piston transmission rod (10) is connected with the top end of the piston chassis (12).

4. A piston steel pipe pedestal pile according to claim 1, characterised in that: the first steel pipe (17) and the second steel pipe (18) are fixedly connected with the two sides of the end socket steel plate (7) respectively.