CN112921953A

CN112921953A - Landslide-preventing high-sliding-resistance miniature pile and construction method thereof

Info

Publication number: CN112921953A
Application number: CN202110392997.XA
Authority: CN
Inventors: 石蕾; 唐玲琳; 周源; 郭敏; 吴琦
Original assignee: Yiyang Long Distance Road Construction Co ltd
Current assignee: Yiyang Long Distance Road Construction Co ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-06-08

Abstract

The utility model relates to a miniature stake of strong cling force of anti-skidding slope, including the pile body, be the communicating pipe that cavity set up along its length direction fixedly connected with in the pile body, a plurality of sleeve pipes of communicating pipe outer wall intercommunication and fixedly connected with, there is branch along its length direction sliding connection in the sleeve pipe, be used for communicating the air pump and utilize the air current to promote communicating pipe branch removes and inserts in the soil layer with supplying branch, and this application has the effect that promotes the stability of miniature stake and slope body coupling.

Description

Landslide-preventing high-sliding-resistance miniature pile and construction method thereof

Technical Field

The application relates to the field of anti-skidding miniature piles, in particular to an anti-skidding miniature pile with strong anti-skidding force and a construction method thereof.

Background

At present, landslide is a common geological disaster, and in order to prevent landslide to a large extent, the slope surface of a mountain often needs to be reinforced.

Chinese patent No. CN109914446A discloses a miniature pile with strong anti-slip capability for anti-slip slope and its construction method, which comprises a miniature pile of steel pipe concrete pile, wherein the miniature pile is composed of an upper pile section, a middle pile section and a lower pile section which are integrally connected and communicated, the upper pile section is a cylinder, the middle pile section is a fusiform column, the lower pile section is a hammer-shaped column, the upper pile section and the middle pile section are mutually communicated to form a cavity for accommodating concrete, a through hole is formed along the middle pile section from top to bottom along one circle of the pile body, the through hole is used for allowing concrete entering the cavity of the miniature pile to overflow from the through hole and flow into the soil body of the anti-slip slope to form an anti-slip branch, and the anti-slip branch is used for increasing the anti-slip capability of the miniature pile by increasing the contact area between the filler and the.

With respect to the related art in the above, the inventors thought that the stability of the micropile is poor due to the small connection surface of the micropile and the slope body in the related art.

Disclosure of Invention

In order to improve the stability of connection of the micro pile and a slope body, the application provides the anti-landslide high-sliding-resistance micro pile and the construction method thereof.

First aspect, the application provides a high resistance to sliding miniature stake of anti-skidding slope adopts following technical scheme:

the utility model provides a miniature stake of strong cling force of anti-skidding slope, includes the pile body, be the communicating pipe that cavity set up along its length direction fixedly connected with in the pile body, a plurality of sleeves of communicating pipe outer wall intercommunication and fixedly connected with, there is branch along its length direction sliding connection in the sleeve, communicating pipe is used for the intercommunication air pump and utilizes the air current to promote branch removes and inserts in the soil layer with supplying branch.

Through adopting above-mentioned technical scheme, during the use, insert the pile body in the soil layer, then aerify communicating pipe through the air pump to push out branch from the sleeve pipe under the effect of gas and insert in the soil layer, then under the effect of branch, strengthened the stress surface of pile body, thereby increased the joint force between pile body and the soil layer, strengthened the stability of pile body.

Optionally, the supporting rod is arranged in a hollow manner, a plurality of through holes are formed in the outer wall of the supporting rod, one end of the supporting rod, which is far away from the communicating pipe, is arranged in a closed manner, one end of the supporting rod, which is close to the communicating pipe, is slidably connected with a cover plate used for opening and closing the supporting rod, the cover plate is arranged in the thickness direction along the length direction of the sleeve, a first spring is fixedly connected in the supporting rod, the other end of the first spring is fixedly connected with the cover plate, and when the cover plate covers the supporting rod, the; an opening for inserting the cover plate is formed in one end, far away from the communicating pipe, of the inner wall of the sleeve.

By adopting the technical scheme, in the process that the supporting rod is inserted into the soil layer, when the cover plate moves to the opening position, the cover plate is reset under the action of the first spring of the cover plate so as to be inserted into the opening, on one hand, the opening of the inlet of the supporting rod is realized, and on the other hand, the supporting rod can be positioned; after branch inserted the soil layer, carry out the slip casting through the slip casting machine to communicating pipe to the thick liquid can enter into the soil layer through the perforation, bonds with the soil layer after solidifying and is in the same place, thereby can further strengthen the engaging force between pile body and the soil layer

Optionally, the sleeve is provided with a limiting member for positioning the position of the supporting rod, and the limiting member limits the sliding of the supporting rod so that the cover plate can be inserted into the opening.

Through adopting above-mentioned technical scheme, the setting of locating part when impeling branch through the air pump, can prevent on the one hand that branch from breaking away from the sleeve pipe, on the other hand can fix a position branch to supply the apron to insert in the opening

Optionally, the limiting part includes a fixture block, the fixture block is disposed on the inner wall of the sleeve, a stop block is disposed on the outer wall of the supporting rod, and the stop block abuts against the fixture block in the sliding process of the supporting rod.

Through adopting above-mentioned technical scheme, the dog sets up on the sliding path of fixture block to can prevent that branch from breaking away from the sleeve pipe, when fixture block and dog butt, the apron can just in time align the opening and insert the opening under the effect of spring one, thereby realizes opening of branch import, carries out the slip casting with the branch that supplies the slip casting machine.

Optionally, the sleeve is arranged in an inclined manner, and one end of the sleeve, which is far away from the communicating pipe, is higher than one end of the sleeve, which is close to the communicating pipe.

By adopting the technical scheme, the pile body can be prevented from floating upwards to a certain extent in the process of moving the slope body soil layer.

Optionally, one end of the supporting rod, which is far away from the communicating pipe, is fixedly connected with a first conical head.

Through adopting above-mentioned technical scheme, make things convenient for branch to insert in the soil layer.

Optionally, the supporting rod is provided with a sealing gasket for abutting against the inner wall of the sleeve.

Through adopting above-mentioned technical scheme, strengthen the leakproofness between branch and the sleeve pipe.

On the other hand, the construction method of the landslide prevention micro pile with strong sliding resistance provided by the application adopts the following technical scheme:

a construction method of a landslide-preventing miniature pile with strong sliding resistance comprises the following steps:

step 1, inserting a support rod into a sleeve, and controlling the support rod to be completely positioned in the pile body;

step 2, driving the pile body into a slope soil layer;

step 3, inflating the communicating pipe, pushing the supporting rod out and inserting the supporting rod into the soil layer under the action of air force until the cover plate moves to the opening position and is inserted into the opening;

and 4, grouting the communicating pipe, wherein concrete enters the supporting rod through the sleeve and is extruded into a soil layer through the through hole in the supporting rod.

Through adopting above-mentioned technical scheme, in pushing out branch and inserting the soil layer under the effect of air pump to can strengthen the stress surface of pile body, thereby can promote the stability of pile body, communicating pipe can act as the slip casting pipe simultaneously, thereby can carry out the slip casting to branch under the effect of slip casting machine, then concrete grout can spread in the soil layer under fenestrate effect, together with soil bonding, further strengthen the engaging force of soil and pile body.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the pile body is used, the pile body is inserted into a soil layer, then the communicating pipe is inflated through the air pump, so that the supporting rod is pushed out of the sleeve pipe and inserted into the soil layer under the action of air force, the stress surface of the pile body is enhanced under the action of the supporting rod, the connecting force between the pile body and the soil layer is increased, and the stability of the pile body is enhanced;

2. this application is through the effect of apron and spring one, can realize opening and close of branch import, and back in branch inserted the soil layer can carry out the slip casting to branch through the slip casting machine, then the concrete grout can spread under fenestrate effect in the soil layer, bonds with soil and is in the same place, further strengthens the engaging force of soil and pile body.

Drawings

FIG. 1 is a schematic diagram illustrating an overall structure of a high-slip-resistance micropile for preventing landslide according to an embodiment of the present application;

fig. 2 is an enlarged schematic view of region a in fig. 1.

Description of reference numerals: 1. a pile body; 2. a first conical head; 3. a communicating pipe; 4. a tube assembly; 5. a sleeve; 6. a strut; 7. a stopper; 8. a second conical head; 9. a gasket; 10. a clamping block; 11. a second spring; 12. a second spring; 13. a cover plate; 14. a guide bar; 15. a slider; 16. a first spring; 17. an opening; 18. perforating; 19. a step; 20. a filter screen; 21. and (5) filtering the frame.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a high-slip-resistance miniature pile for preventing landslide. Referring to fig. 1, the micro pile comprises a pile body 1, wherein the pile body 1 is arranged in a hollow mode, the pile body 1 is cylindrical, the lower end of the pile body 1 is fixedly and coaxially connected with a conical head II 8, and the conical head I2 is downward in conical tip.

Coaxial fixedly connected with is communicating pipe 3 that cavity set up in the pile body 1, communicating pipe 3 is cylindrically, 3 length direction along the setting of 1 length direction of pile body communicating pipe, 3 are equipped with a plurality of pipe subassemblies 4 along its length direction equidistance communicating pipe, pipe subassembly 4 establishes to threely in this embodiment, pipe subassembly 4 includes a plurality of sleeve pipes 5 that set up along 3 circumference equidistance communicating pipe, every pipe subassembly 4 includes four sleeve pipes 5 in this embodiment, sleeve pipe 5 is transversal personally submits squarely, sleeve pipe 5 one end intercommunication and fixed connection communicating pipe 3, the sleeve pipe 5 other end runs through pile body 1 and flushes with 1 outer wall of pile body, sleeve pipe 5 is the slope setting, the one end that sleeve pipe 5 is close to communicating pipe 3 is less than sleeve pipe 5.

The plug-in has branch 6 in the sleeve pipe 5, branch 6 is the cavity setting, the transversal circular of personally submitting of

branch

6, 6 one end fixedly connected with dog 7 of branch, 6 other end fixedly connected with conical head two 8 of branch, and two 8 conical points of conical head keep away from communicating pipe 3, dog 7 is the cavity setting, dog 7 is transversal personally submits squarely and 5 inner walls circumference butt of sleeve pipe, cup joint and fixedly connected with sealed pad 9 on the dog 7, sealed pad 9 is rubber materials, when branch 6 inserted in sleeve pipe 5, sealed pad 9 produces deformation.

The inner wall of the communicating pipe 3 is provided with a limiting part for limiting the supporting rod 6 to be separated from the sleeve pipe 5, the limiting part comprises a fixture block 10, one end, away from the communicating pipe 3, of the inner wall of the sleeve pipe 5 is provided with a yielding groove, the fixture block 10 is inserted into the yielding groove, a second spring 1211 is fixedly connected into the yielding groove, the other end of the second spring 1211 is fixedly connected with a fixture block 10, when the second spring 1211 is deformed, the fixture block 10 is partially clamped in the yielding groove, and the portion, away from the outer side of the yielding groove, of one end of the fixture block 10.

A cover plate 13 is connected in the check block 7 in a sliding manner along the direction vertical to the length direction of the communicating pipe 3, a guide rod 14 is fixedly connected in the check block 7, the length direction of the guide rod 14 is arranged along the sliding direction of the cover plate 13, a slide block 15 is fixedly connected on the cover plate 13, the slide block 15 is sleeved on the guide rod 14, an opening 17 for the cover plate 13 to slide out is formed in one end, away from the communicating pipe 3, of the sleeve 5, and when the check block 7 abuts against the check block 10, the cover plate 13 is; the guide rod 14 is fixedly connected to the first spring 16, two ends of the first spring 16 are respectively fixedly connected with the sliding block 15 and the guide rod 14, and when the cover plate 13 is accommodated in the stop block 7, the first spring 16 deforms.

A plurality of through holes 18 are formed in the outer wall of the supporting rod 6 in an array mode, steps 19 are fixedly connected to the inner walls of the through holes 18, a filter frame 21 is glued on the steps 19, and a filter screen 20 is fixedly connected to the filter frame 21.

The implementation principle of the miniature stake of strong anti-skidding power of this application embodiment of preventing landslide does: pile body 1 inserts in the soil layer after, aerify communicating pipe 3 through the air pump, behind dog 7 butt fixture block 10, apron 13 resets under the effect of spring 16, insert in opening 17, branch 6 import is opened, then handle through aspiration pump and the intraformational air of water pump soil and moisture content, 3 slip casting of communicating pipe are handled to the rethread slip casting machine, the concrete enters into branch 6 through sleeve pipe 5, squeeze filter screen 20 open, the concrete thick liquid is crowded to the soil layer by perforation 18 on branch 6 in, solidify and back soil bonds together.

The embodiment of the application discloses a construction method of a landslide prevention micro pile with strong sliding resistance, which comprises the following steps:

step 1, pressing a cover plate 13 to enable the cover plate 13 to completely enter a stop block 7, inserting a support rod 6 into a sleeve 5, wherein when the sleeve is inserted, due to the arrangement of the arc surfaces of the fixture blocks 10, the fixture blocks 10 completely enter a yielding groove under the action of the stop block 7 until the support rod 6 is completely positioned in a pile body 1;

step 2, driving the pile body 1 into a slope soil layer;

step 3, after the pile body 1 enters a proper position of a soil layer, inflating the communicating pipe 3 through the air pump, pushing the supporting rod 6 out under the action of air force and inserting the supporting rod into the soil layer, and after the stop block 7 abuts against the clamping block 10, inserting the cover plate 13 into the opening 17 under the action of the first spring 16, so that the inlet of the supporting rod 6 is opened;

step 4, communicating the communicating pipe 3 by using an air suction pump and a water pump, and sucking or pumping water to the communicating pipe 3 to discharge gas and water in the soil through the communicating pipe 3;

and 5, after the moisture and the gas in the soil layer are treated, communicating the grouting machine with the communicating pipe 3, grouting the communicating pipe 3, enabling concrete to enter the supporting rod 6 through the sleeve 5, squeezing the filter screen 20 open, squeezing concrete grout into the soil layer through the through hole 18 in the supporting rod 6, and bonding the concrete grout with the soil after solidification.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a miniature stake of strong cling force of anti-skidding slope, includes pile body (1), its characterized in that: communicating pipe (3) that its length direction fixedly connected with is cavity setting in pile body (1), communicating pipe (3) outer wall intercommunication and a plurality of sleeve pipes of fixedly connected with (5), there are branch (6) along its length direction sliding connection in sleeve pipe (5), communicating pipe (3) are used for the intercommunication air pump and utilize the air current to promote branch (6) remove and insert in the soil layer with supplying branch (6).

2. The high-slip-resistance micropile for preventing landslide according to claim 1, wherein: the supporting rod (6) is arranged in a hollow mode, a plurality of through holes (18) are formed in the outer wall of the supporting rod (6), one end, far away from the communicating pipe (3), of the supporting rod (6) is arranged in a closed mode, one end, close to the communicating pipe (3), of the supporting rod (6) is connected with a cover plate (13) used for opening and closing the supporting rod (6) in a sliding mode, the thickness direction of the cover plate (13) is arranged along the length direction of the sleeve (5), a first spring (16) is fixedly connected into the supporting rod (6), the other end of the first spring (16) is fixedly connected with the cover plate (13), and when the supporting rod (6) is covered by the cover plate (13), the first spring (16); an opening (17) for inserting the cover plate (13) is formed in one end, far away from the communicating pipe (3), of the inner wall of the sleeve (5).

3. The high-slip-resistance micropile of claim 2, wherein: the sleeve (5) is provided with a limiting piece for positioning the position of the supporting rod (6), and the limiting piece limits the sliding of the supporting rod (6) so that the cover plate (13) can be inserted into the opening (17).

4. The high-slip-resistance micropile for preventing landslide according to claim 3, wherein: the limiting part comprises a clamping block (10), the clamping block (10) is arranged on the inner wall of the sleeve (5), a stopping block (7) is arranged on the outer wall of the supporting rod (6), and in the sliding process of the supporting rod (6), the stopping block (7) is abutted to the clamping block (10).

5. The high-slip-resistance micropile for preventing landslide according to claim 1, wherein: the sleeve (5) is obliquely arranged, and one end, away from the communicating pipe (3), of the sleeve (5) is higher than one end, close to the communicating pipe (3), of the sleeve (5).

6. The high-slip-resistance micropile for preventing landslide according to claim 1, wherein: one end of the supporting rod (6) far away from the communicating pipe (3) is fixedly connected with a first conical head (2).

7. The high-slip-resistance micropile for preventing landslide according to claim 1, wherein: the supporting rod (6) is provided with a sealing gasket (9) which is used for tightly abutting against the inner wall of the sleeve (5).

8. The construction method of the anti-landslide micropile with strong sliding resistance according to any one of claims 1 to 7, wherein: the method comprises the following steps:

step 1, inserting a support rod (6) into a sleeve (5), and controlling the support rod (6) to be completely positioned in the pile body (1);

step 2, driving the pile body (1) into a slope soil layer;

step 3, inflating the communicating pipe (3), pushing the support rod (6) out and inserting the support rod into the soil layer under the action of air force until the cover plate (13) moves to the position of the opening (17) and is inserted into the opening (17);

and 4, grouting the communicating pipe (3), wherein concrete enters the supporting rod (6) through the sleeve (5) and is extruded into a soil layer through a through hole (18) in the supporting rod (6).