CN210766746U

CN210766746U - Pressure pile foundation

Info

Publication number: CN210766746U
Application number: CN201921458899.6U
Authority: CN
Inventors: 徐为海; 吴晓亮; 朱斌
Original assignee: Zhenjiang Survey And Mapping Research Institute
Current assignee: Zhenjiang Survey And Mapping Research Institute
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2020-06-16
Anticipated expiration: 2029-09-03

Abstract

The utility model discloses a pressure pile foundation, it relates to the pile foundation field, aims at solving current friction pile and squeezes into the big problem of underground resistance, and its technical essential includes the pile body, sets up at the internal inner chamber of pile, sets up at a plurality of logical grooves of inner chamber below chamber wall and running through pile body perisporium, slides and set up the picture peg on leading to the groove wall and set up including the intracavity be used for the ejecting subassembly of the ejecting inner chamber of picture peg, the utility model discloses when making the pile foundation squeeze into underground smoothly, strengthen the frictional force between pile foundation and the stake side soil to improve the vertical load of pile foundation.

Description

Pressure pile foundation

Technical Field

The utility model relates to a pile foundation field, more specifically say, it relates to a pressure pile foundation.

Background

The friction pile is also called pressure pile foundation, and is a pile foundation which mainly depends on the frictional resistance of the side soil of the pile to support vertical load when the pile passes through and is supported on various compressed soil layers.

The prior Chinese patent with the publication number of CN205742157U discloses a foundation friction pile for building, which comprises an upper prefabricated pile body, a lower prefabricated pile body and a base, wherein a connecting rib is arranged between the upper prefabricated pile body and the lower prefabricated pile body.

However, although this utility model through setting up the base, obviously improved the bearing capacity of friction pile, this utility model has also increaseed the pile foundation and has squeezed into the underground degree of difficulty because of having set up the base.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a pressure pile foundation when making the pile foundation squeeze into the underground smoothly, strengthens the pile foundation and the stake side frictional force between the soil to improve the vertical load of pile foundation.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a pressure pile foundation comprises a pile body, an inner cavity arranged in the pile body, a plurality of through grooves arranged on the cavity wall below the inner cavity and penetrating through the peripheral wall of the pile body, an inserting plate arranged on the wall of the through grooves in a sliding mode and an ejection assembly arranged in the inner cavity and used for ejecting the inserting plate out of the inner cavity.

Through taking above-mentioned technical scheme, at the in-process of pile, the picture peg is received in the inner chamber, and the pile body is normally squeezed into the underground, after squeezing into the predicted degree of depth with the pile body, ejecting subassembly can be with the picture peg by logical groove ejecting inner chamber to the picture peg inserts in the stake side soil, receives the limiting displacement of picture peg, can strengthen the frictional force between pile foundation and the stake side soil greatly, thereby improves the vertical load of pile foundation.

The utility model discloses a further set up to, ejecting subassembly includes through support piece setting in advance at the pile platform on pile body top, set up at the pile platform lower surface and stretch into the ejecting post of inner chamber and set up the top of keeping away from pile platform one end at ejecting post, support piece equals the distance between two picture pegs adjacent farthest along pile platform length direction to the support height of pile platform in advance.

By adopting the technical scheme, when the supporting force of the pre-supporting piece is removed, the ejection column can move downwards under the action of self gravity or external force, the tip can be inserted between the insertion plates and is subjected to the pressure action of the peripheral wall of the ejection column, the insertion plates can be ejected out of the inner cavity gradually, and the pre-supporting piece is simple to operate, convenient and fast.

The utility model discloses a further set up to, the part of support in advance is including setting up the spout of stepping down on the pile body is located pile platform one end wall, the spout of stepping down extends along the length direction of pile body, still including setting up at the pile platform be close to ejecting post one side and with step down the bracing piece that the spout slided and is connected, set up the one end that is close to the pile platform at the pile body perisporium and extend to the support groove of the spout of stepping down and slide the backup pad of setting in supporting the inslot, the backup pad passes through bolt fixed connection with supporting the groove, one side and the bracing piece butt that the backup pad is close to the pile platform, the spout of stepping down keeps away from the inner chamber setting with supporting.

Through taking above-mentioned technical scheme, when the backup pad is inserted in supporting the inslot, the notch that the backup pad can will let the spout dies, and then the bracing piece can not stretch into the spout of stepping down, and the backup pad plays the supporting role to the bracing piece, when pulling out the backup pad and supporting the groove, has lost the hindrance of backup pad, and the bracing piece can enter into smoothly in the spout of stepping down, and the pile platform can drive ejecting post downstream smoothly.

The utility model discloses a further set up to, the picture peg is flat peak board, the pointed end of picture peg sets up and thickness direction extends along pile length direction towards the pile body outside, it is provided with the space filling member to lead to groove to slide on pile length direction's the lateral wall.

By adopting the technical scheme, the pressure action of the inserting plate on the pile side soil can be increased, so that the inserting plate can be smoothly inserted into the pile side soil, and meanwhile, the gap filling piece fills the gap between the inclined surface of the inserting plate and the through groove, so that the phenomenon that the pile side soil is clamped into the through groove to influence the ejection of the inserting plate in the piling process is avoided.

The utility model discloses a further set up to, the space filling member including set up logical groove along the groove that slides on pile body length direction's the lateral wall, slide the packing set-square that sets up at the inslot that slides and set up and be provided with the spring of stepping down between the one end that the packing set-square stretched into the groove that slides and the groove cell wall that slides, the inclined plane of packing set-square and the inclined plane butt of picture peg.

Through adopting above-mentioned technical scheme, at the pile in-process, the existence of the spring of stepping down makes the packing set-square stretch out the groove of sliding, fills the space between picture peg inclined plane and the logical groove, and when the picture peg was ejecting logical groove, the elasticity of the spring of stepping down can be overcome to the pressure of picture peg lateral wall, will pack the set-square and press into the groove of sliding, and then can not influence the ejecting of picture peg.

The utility model discloses a further set up to, the picture peg is provided with the transition inclined plane with the relative one side of ejecting post moving direction, one side that logical groove was kept away from to the picture peg is provided with the stable cambered surface, the perisporium laminating of stable cambered surface and ejecting post.

By adopting the technical scheme, the transition inclined plane is matched and staggered with the inclined plane of the tip, so that the plug board can be smoothly ejected out of the inner cavity by the ejection column, and meanwhile, after the plug board is ejected out of the inner cavity, the stable arc surface is abutted against the peripheral wall of the ejection column in a fitting manner, so that the plug board can be limited, and the plug board can be more stably inserted into the pile side soil.

The utility model discloses a, further set up to, the pile platform runs through and is provided with the slip casting mouth relative with the inner chamber.

By adopting the technical scheme, the inner cavity can be filled with concrete slurry in the engineering with high pile body stability, and the stability and the strength of the pile body can be greatly enhanced.

The utility model discloses a further set up as, the end of inserting of pile body is provided with the awl point.

Through adopting above-mentioned technical scheme, at the pile driving in-process, can strengthen the pressure of pile body bottom to the soil, make the pile body throw into the underground more smoothly.

To sum up, the utility model discloses following beneficial effect has:

1. the utility model can greatly enhance the friction force between the pile foundation and the pile side soil through the limiting function of the plug board, thereby improving the vertical load of the pile foundation, and the utility model discloses in the project of driving into the ground, the plug board is collected in the inner cavity, after the depth is determined, the push-out component can push out the inner cavity of the plug board from the through groove, thereby the plug board is inserted into the pile side soil, and the pile foundation is guaranteed to be smoothly driven into the ground;

2. the utility model provides an among the ejecting subassembly, when removing support piece's holding power in advance, ejecting post can be at self gravity or the effect of external force down the downstream, and top can insert between the picture peg, receives the pressure effect of ejecting post perisporium, and the picture peg can be gradually by ejecting inner chamber, easy operation, convenient and fast.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view showing the state of the middle insert plate extending out of the inner cavity.

Fig. 3 is a sectional view showing the state of the middle insert plate received in the inner cavity.

Fig. 4 is an enlarged view of a portion a in fig. 2.

Fig. 5 is a schematic view of an interposer structure according to the present invention.

Reference numerals: 1. a pile body; 2. an inner cavity; 3. a through groove; 4. inserting plates; 5. ejecting the assembly; 6. a pre-support; 7. pile platform; 8. ejecting the column; 9. a tip; 10. a yielding chute; 11. a support bar; 12. a support groove; 13. a support plate; 14. a void filler; 15. a sliding groove; 16. filling a triangular plate; 17. a yielding spring; 18. a transition bevel; 19. stabilizing the arc surface; 20. a grouting port; 21. and (5) tapering.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

the utility model discloses a pressure pile foundation, as shown in figure 1 and figure 2, comprising a pile body 1, an inner cavity 2 arranged in the pile body 1, a plurality of through grooves 3 arranged on the cavity wall below the inner cavity 2 and running through the peripheral wall of the pile body 1, a plug board 4 arranged on the wall of the through groove 3 in a sliding way, and an ejection assembly 5 arranged in the inner cavity 2 and used for ejecting the plug board 4 out of the inner cavity 2, wherein the through grooves 3 of the utility model are arranged with three groups along the vertical direction; before piling, ensuring that the inserting plates 4 are all received in the inner cavity 2, then normally piling, after the pile body 1 is driven into the required depth, utilizing the ejection assembly 5 to eject the inserting plates 4 out of the inner cavity 2 through the through grooves 3, and enabling the inserting plates 4 to be inserted into pile side soil, so that the vertical load of a pile foundation can be greatly improved.

Meanwhile, as shown in fig. 1, in order to make the pile body 1 more smoothly driven into the ground, the insertion end of the pile body 1 is provided with a cone point 21.

As shown in fig. 1, 2 and 3, the ejection assembly 5 includes a pile platform 7 disposed at the top end of the pile body 1 through a pre-support member 6, an ejection column 8 disposed at the lower surface of the pile platform 7 and extending into the inner cavity 2, and a tip 9 disposed at one end of the ejection column 8 far from the pile platform 7, wherein the support height of the pre-support member 6 to the pile platform 7 is equal to the distance between two insertion plates 4 which are adjacent and farthest along the length direction of the pile platform 7; after the pile body 1 is driven into the required depth, the supporting function of the pre-supporting piece 6 is removed, the pile platform 7 is driven, the ejection column 8 moves downwards smoothly under the action of the gravity of the ejection column 8, the pressure of the side wall of the tip 9 provides a sliding trend for the inserting plate 4, and then the pressure of the peripheral wall of the ejection column 8 completely ejects the inserting plate 4 out of the through groove 3 and inserts the inserting plate into the soil on the side of the pile.

As shown in fig. 1, in order to meet the engineering requirement of high stability, the pile platform 7 is provided with a grouting opening 20 opposite to the inner cavity 2 in a penetrating manner, and after the inserting plate 4 is inserted into the pile side soil, concrete slurry is injected into the inner cavity 2 through the grouting opening 20, so that the stability and the strength of the pile body 1 are further enhanced.

As shown in fig. 2, 3 and 5, in order to make the pressure of the side wall of the center 9 provide a better sliding tendency for the inserting plate 4, in the present invention, a transition inclined plane 18 is arranged on the side of the inserting plate 4 opposite to the moving direction of the ejection column 8, a stable cambered surface 19 is arranged on the side of the inserting plate 4 away from the through groove 3, and the stable cambered surface 19 is attached to the peripheral wall of the ejection column 8; the transition inclined plane 18 is matched and staggered with the inclined plane of the top tip 9, so that the plug board 4 can be more smoothly ejected out of the inner cavity 2 by the ejection column 8, and meanwhile, after the plug board 4 is ejected out of the inner cavity 2, the stable arc surface 19 is abutted to the peripheral wall of the ejection column 8 in an attaching mode, so that the plug board 4 can be limited, and the plug board 4 can be more stably inserted into the pile side soil.

As shown in fig. 1, 2 and 3, the pre-support member 6 includes an abdicating chute 10 disposed on an end wall of the pile body 1 at one end of the pile platform 7, the abdicating chute 10 extends along a length direction of the pile body 1, a support rod 11 disposed on one side of the pile platform 7 close to the ejection post 8 and slidably connected with the abdicating chute 10, a support groove 12 disposed on one end of a peripheral wall of the pile body 1 close to the pile platform 7 and extending to the abdicating chute 10, and a support plate 13 slidably disposed in the support groove 12, the support plate 13 is fixedly connected with the support groove 12 by a bolt, one side of the support plate 13 close to the pile platform 7 is abutted against the support rod 11, and the abdicating chute 10 and the support groove 12 are disposed away from the inner cavity 2; in the piling process, the supporting plate 13 is fixed in the supporting groove 12, so that the supporting rod 11 is prevented from sliding into the abdicating sliding groove 10, the pile platform 7 drives the ejection column 8 to move downwards, when the inserting plate 4 needs to be ejected, the supporting plate 13 is pulled out from the supporting groove 12, the obstruction of the supporting plate 13 is lost, the supporting rod 11 can smoothly enter the abdicating sliding groove 10, and the pile platform 7 can smoothly drive the ejection column 8 to move downwards.

As shown in fig. 4, in order to insert the inserting plate 4 into the pile side soil smoothly, in the utility model, the pointed end of the inserting plate 4 is arranged towards the outside of the pile body 1, and the thickness direction extends along the length direction of the pile body 1, and simultaneously, in order to avoid that the pile side soil enters the inner cavity 2 from the gap between the through groove 3 and the side wall of the inserting plate 4 in the piling process to influence the ejection of the inserting plate 4, in the utility model, the through groove 3 is provided with a gap filling member 14 in a sliding manner along the side wall of the length direction of the pile body 1, the gap filling member 14 comprises a sliding groove 15 arranged on the side wall of the through groove 3 along the length direction of the pile body 1, a filling triangular plate 16 arranged in the sliding groove 15 in a sliding manner, and an abdicating spring 17 arranged between one end of the filling triangular plate 16 extending into the sliding groove 15 and the groove wall of the sliding groove 15, and the; in the piling process, the existence of the yielding spring 17 enables the filling triangular plate 16 to extend out of the sliding groove 15, a gap between the inclined surface of the inserting plate 4 and the through groove 3 is filled, when the inserting plate 4 is ejected out of the through groove 3, the pressure of the side wall of the inserting plate 4 can overcome the elasticity of the yielding spring 17, the filling triangular plate 16 is pressed into the sliding groove 15, and then ejection of the inserting plate 4 is not influenced.

The working process is as follows:

before piling, ensuring that the inserting plates 4 are all received in the inner cavity 2, then normally piling, after the pile body 1 is driven into the required depth, pulling the supporting plate 13 out of the supporting groove 12, losing the obstruction of the supporting plate 13, enabling the supporting rod 11 to enter the abdicating sliding groove 10, driving the ejection column 8 to move downwards by the pile platform 7, enabling the pressure of the side wall of the tip 9 to provide a sliding trend for the inserting plates 4, then thoroughly ejecting the inserting plates 4 out of the through grooves 3 by the circumferential wall pressure of the ejection column 8, inserting the inserting plates into the pile side soil, enabling the pressure of the side wall of the tip 9 to provide a sliding trend for the inserting plates 4, then thoroughly ejecting the inserting plates 4 out of the through grooves 3 by the circumferential wall pressure of the ejection column 8, inserting the inserting plates into the pile side soil, and.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A pressure pile foundation, its characterized in that: the pile comprises a pile body (1), an inner cavity (2) arranged in the pile body (1), a plurality of through grooves (3) arranged on the cavity wall below the inner cavity (2) and penetrating through the peripheral wall of the pile body (1), an inserting plate (4) arranged on the groove wall of the through grooves (3) in a sliding manner, and an ejection assembly (5) arranged in the inner cavity (2) and used for ejecting the inserting plate (4) out of the inner cavity (2).

2. A pressure pile foundation according to claim 1, characterised in that: ejecting subassembly (5) include through support piece (6) set up pile platform (7) on pile body (1) top in advance, set up at pile platform (7) lower surface and stretch into ejecting post (8) in inner chamber (2) and set up top (9) of keeping away from pile platform (7) one end in ejecting post (8), support piece (6) in advance equals along the distance between two adjacent picture pegs (4) of farthest of pile platform (7) length direction to the support height of pile platform (7).

3. A pressure pile foundation according to claim 2, characterised in that: strutting piece (6) including setting up chute (10) of stepping down on pile body (1) is located pile platform (7) one end wall, chute (10) of stepping down extends along the length direction of pile body (1), still including setting up at pile platform (7) be close to ejecting post (8) one side and with step down bracing piece (11) that chute (10) slided and is connected, set up one end that pile body (1) perisporium is close to pile platform (7) and extend to support groove (12) of chute (10) of stepping down and slide backup pad (13) of setting in supporting groove (12), backup pad (13) pass through bolt fixed connection with supporting groove (12), backup pad (13) are close to one side and bracing piece (11) butt of pile platform (7), inner chamber (2) setting is kept away from with supporting groove (12) to chute (10) of stepping down.

4. A pressure pile foundation according to claim 1, characterised in that: picture peg (4) are flat sharp board, the pointed end of picture peg (4) sets up and thickness direction extends along pile body (1) length direction towards the pile body (1) outside, it is provided with gap filling spare (14) to lead to groove (3) to slide on the lateral wall along pile body (1) length direction.

5. A pressure pile foundation according to claim 4, characterised in that: gap filling member (14) including set up groove (15) that slides on leading to groove (3) along pile body (1) length direction's lateral wall, slide and set up packing set-square (16) in groove (15) that slides and set up and be provided with between the one end that fills set-square (16) and stretch into groove (15) that slides and groove (15) cell wall and let a spring (17), the inclined plane of packing set-square (16) and the inclined plane butt of picture peg (4).

6. A pressure pile foundation according to claim 2, characterised in that: one side of the inserting plate (4) opposite to the moving direction of the ejection column (8) is provided with a transition inclined surface (18), one side of the inserting plate (4) far away from the through groove (3) is provided with a stable cambered surface (19), and the stable cambered surface (19) is attached to the peripheral wall of the ejection column (8).

7. A pressure pile foundation according to claim 2, characterised in that: the pile platform (7) is provided with a grouting opening (20) opposite to the inner cavity (2) in a penetrating way.

8. A pressure pile foundation according to claim 1, characterised in that: the inserting end of the pile body (1) is provided with a conical tip (21).