CN111676961B - Soft soil foundation treatment method - Google Patents
Soft soil foundation treatment method Download PDFInfo
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- CN111676961B CN111676961B CN202010415985.XA CN202010415985A CN111676961B CN 111676961 B CN111676961 B CN 111676961B CN 202010415985 A CN202010415985 A CN 202010415985A CN 111676961 B CN111676961 B CN 111676961B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/28—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes
- E02D7/30—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes by driving cores
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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Abstract
The invention relates to a soft soil foundation treatment method, which comprises the following steps; s1, drilling an installation hole: drilling a mounting hole on the foundation through a drilling machine; s2, mounting the steel pipe pile: installing the steel pipe pile into the mounting hole through a pile driver; s3, extruding the side wall of the mounting hole: the driving device drives the lead screw to rotate, the abutting block moves towards the outside of the steel pipe pile under the action of the lead screw and the transmission mechanism, the abutting block moves to drive the abutting plate to move, and the abutting plate moves to squeeze the side wall of the mounting hole; s4, pouring concrete: and pouring concrete into the steel pipe pile. The extrusion device is arranged, so that the possibility of foundation settlement can be reduced.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a soft soil foundation treatment method.
Background
The acceleration of the urbanization construction process makes civil engineering construction increase continuously, and soft soil foundation phenomenon is more and more common simultaneously. If the foundation soil is soft soil, the bearing capacity and the shearing resistance of the foundation soil are weak, particularly when the foundation soil is vibrated or loaded greatly, the strength of the foundation can be obviously reduced and is in a flowing state, and then the local or integral shearing damage of the foundation is caused to form the sideslip of the soft soil layer.
In the process of treating large-area soft soil foundation, the drainage way is usually adopted to improve the soil strength and achieve the purpose of reducing soil settlement. The cushion layer processing technology is commonly called a cushion layer method. The principle is as follows: a drainage surface is arranged between the filling soil and the foundation, so that pore water in foundation soil is rapidly drained after the foundation is subjected to filling soil load, the foundation consolidation speed is accelerated, the bearing capacity of the foundation is improved, the settlement is reduced, the local shear deformation of the foundation is prevented, and the frost heaving condition is reduced. It should be noted that the material used should be clean medium grit with a mud content of no more than 5%, or natural grade grit with a maximum particle size of less than 5 cm. Similar drainage treatment processes include plastic drainage plates combined with preloading and the like.
The above prior art solutions have the following drawbacks: the effective stress of the foundation is improved due to the discharge of the water body, and the foundation overall can be settled, so that a high-rise cushion layer for improving the height of the foundation may be laid.
Disclosure of Invention
In view of the disadvantages of the prior art, the invention aims to provide a soft soil foundation treatment method, which can reduce the possibility of foundation settlement by arranging an extrusion device.
The above object of the present invention is achieved by the following technical solutions:
a soft soil foundation treatment method comprises the following steps;
s1, drilling an installation hole: drilling a mounting hole on the foundation through a drilling machine;
s2, mounting the steel pipe pile: the steel pipe pile is installed in the installation hole through a pile driver, a lead screw is vertically and rotatably connected in the steel pipe pile, a plurality of groups of extrusion devices are vertically and sequentially arranged in the steel pipe pile, each group of extrusion devices comprises a plurality of through holes which are sequentially arranged on the side wall of the steel pipe pile along the circumferential direction of the steel pipe pile, butt blocks which are in one-to-one correspondence and are connected to the through holes in a sliding mode along the radial direction of the steel pipe pile, and a transmission mechanism which is installed on the outer side wall of the lead screw and used for driving the butt blocks to move outwards of the steel pipe pile; a butting plate is fixedly sleeved on one end, away from the screw rod, of the butting block, a sinking groove for the butting plate to be inserted is formed in one end, away from the screw rod, of the through hole, a driving device for driving the screw rod to rotate is arranged on the foundation, and the driving device can move on the foundation;
s3, extruding the side wall of the mounting hole: the driving device drives the lead screw to rotate, the abutting block moves towards the outside of the steel pipe pile under the action of the lead screw and the transmission mechanism, the abutting block moves to drive the abutting plate to move, and the abutting plate moves to squeeze the side wall of the mounting hole;
s4, pouring concrete: and pouring concrete into the steel pipe pile.
By adopting the technical scheme, the screw rod is driven to rotate through the driving device, the abutting block moves towards the outside of the steel pipe pile under the action of the screw rod and the transmission mechanism, the abutting block moves to drive the abutting plate to move, the abutting plate moves to squeeze the side wall of the mounting hole, and further, the foundation can be squeezed; in summary, the possibility of the foundation settling can be reduced by providing the pressing device.
The present invention in a preferred example may be further configured to: in the steps S2 and S3, the driving device includes a moving frame, a plurality of service brake wheels mounted at the bottom of the moving frame, and an armrest mounted at the top of the moving frame; the top of the moving frame is horizontally provided with a driving motor, an output shaft of the driving motor is provided with a commutator, and an output shaft of the commutator is provided with a connecting mechanism for connecting a lead screw.
By adopting the technical scheme, when the lead screw needs to be driven to rotate, the lead screw is fixedly connected with the output shaft of the commutator through the connecting mechanism, then the driving motor is started, and at the moment, the lead screw rotates under the action of the commutator; through setting up drive arrangement, be convenient for drive lead screw rotates.
The present invention in a preferred example may be further configured to: the connecting mechanism comprises a square block fixedly connected to the top of the lead screw, a connecting block in threaded connection with the bottom of the output shaft of the commutator, and a square groove formed in the bottom of the connecting block and used for the square block to be inserted; the lateral wall of connecting block is gone up threaded connection and is had the butt bolt, the one end that its bolt cap was kept away from to the butt bolt can the butt in the lateral wall of square piece.
By adopting the technical scheme, the connecting block is aligned to the screw rod by moving the moving frame, then the connecting block is moved downwards by rotating the connecting block, the square block can be inserted into the square groove by the downward movement of the connecting block, and then the square block is fixed by screwing the abutting bolt; through setting up coupling mechanism, be convenient for make connecting block and lead screw fixed connection.
The present invention in a preferred example may be further configured to: in the step S2, the transmission mechanism includes a driving ring screwed to the lead screw and a moving ring rotatably connected to the bottom of the driving ring and vertically slidably connected to the lead screw; the last articulated a plurality of connecting rods that have of shift ring, it is a plurality of the connecting rod sets up with a plurality of butt piece one-to-one, the one end that the shift ring was kept away from to the connecting rod articulates in butt piece.
By adopting the technical scheme, when the abutting block needs to be driven to move towards the outside of the steel pipe pile, the screw rod is driven to rotate through the driving device, the screw rod rotates to drive the movable ring to move downwards, the driving ring moves downwards to drive the movable ring to move downwards, the movable ring moves downwards to drive the connecting rod to move, and the connecting rod moves to drive the abutting block to move towards the outside of the steel pipe pile; through setting up drive mechanism, be convenient for drive butt joint piece moves outside to the steel-pipe pile.
The present invention in a preferred example may be further configured to: the outer side wall of the screw is provided with a guide assembly for guiding the moving ring, and the guide assembly comprises a guide pipe fixed on the outer side wall of the screw in a sleeved mode, a plurality of vertical grooves formed in the top of the guide pipe and a plurality of guide rods connected to the vertical grooves in a one-to-one corresponding mode in a sliding mode along the vertical direction; and one end of each guide rod, which is far away from the guide pipe, is fixedly connected to the bottom of the moving ring.
Through adopting above-mentioned technical scheme, perpendicular groove has the guide effect to the guide bar to can reduce the possibility that the shift ring takes place to deviate along vertical slip in-process.
The present invention in a preferred example may be further configured to: every first groove of pouring has been seted up at the top of butt joint piece, the one end that the lead screw was kept away from in first groove of pouring runs through the one end setting that the lead screw was kept away from to the butt piece, corresponds first groove of pouring is seted up at the top of steel-pipe pile and is pour the groove with the first second of pouring groove intercommunication, the top threaded connection in groove is pour to the second has the coupling.
Through adopting above-mentioned technical scheme, through setting up first groove and the second of pouring, be convenient for pour the concrete with butt plate department to can make butt plate and mounting hole lateral wall connection more firm.
The present invention in a preferred example may be further configured to: the abutting block is provided with a sealing device for sealing one end of the first pouring groove, which is far away from the lead screw, the sealing device comprises a sealing block which is connected to the first installing groove in a sliding manner along the radial direction of the steel pipe pile and a first spring which is fixedly connected to one end, which is close to the lead screw, of the sealing block, and one end, which is far away from the sealing block, of the first spring is fixedly connected to the inner wall of one end, which is close to the lead screw, of the first pouring groove; a limiting assembly used for limiting the sealing block is arranged in the abutting block, and the limiting assembly comprises a limiting block connected to the side wall of the first pouring groove in a sliding manner along the width direction of the abutting block; the limiting block penetrates through the side wall of the first pouring groove, a sliding block is fixedly connected to one side of the limiting block, a sliding groove for the sliding block to slide along the width direction of the abutting block is formed in the side wall of the first pouring groove, a second spring is fixedly connected to the inner wall of one end, away from the sealing block, of the sliding groove, and the other end of the second spring is fixedly connected to one end, away from the sealing block, of the sliding block; one side butt that the lead screw was kept away from to the stopper is in the one end that sealed piece is close to the lead screw, works as behind stopper and the sealed piece butt, the one end that the lead screw was kept away from to sealed piece and the one end coplane that the lead screw was kept away from to the butt piece, install between through-hole and the stopper and be used for driving the stopper to the promotion subassembly of the direction removal of keeping away from sealed piece.
By adopting the technical scheme, the sealing block is arranged, so that the first pouring groove can be sealed when the abutting block moves towards the direction close to the side wall of the mounting hole, and the possibility that the concrete is inconvenient to pour due to the fact that the first pouring groove enters the soil body can be reduced; when the limiting block is contacted with the pushing assembly, the limiting block is separated from the sealing block under the action of the pushing assembly, the sealing block is reset under the action of the first spring, an operator can observe the sealing block when looking into the steel pipe pile, and then the driving motor can be turned off; through the setting, at first sealed piece can be sealed the one end that first groove of pouring is close to the lead screw to the groove pours into butt joint board department from the second of being convenient for, secondly can reduce the possibility that butt joint board is crowded to be destroyed, can open the one end that the lead screw was kept away from to first groove of pouring at last, thereby is convenient for pour the concrete.
The present invention in a preferred example may be further configured to: the pushing assembly comprises a first pushing block fixedly connected to the inner wall of the through hole and a second pushing block fixedly connected to one side, far away from the screw rod, of the limiting block, and inclined planes are arranged on the inner sides, opposite to each other, of the first pushing block and the second pushing block respectively and are matched with each other.
By adopting the technical scheme, the abutting block moves to drive the limiting block to move, the limiting block moves to drive the second pushing block to move, when the second pushing block is contacted with the first pushing block, the second pushing block continues to be driven to move, at the moment, the first pushing block drives the second pushing block to move towards the direction far away from the limiting block under the action of the inclined plane, and the second pushing block moves to drive the limiting block to move, so that the limiting block can be separated from the sealing block; through setting up the promotion subassembly, be convenient for make stopper and sealed piece separation.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the driving device drives the lead screw to rotate, the abutting block moves towards the outside of the steel pipe pile under the action of the lead screw and the transmission mechanism, the abutting block moves to drive the abutting plate to move, the abutting plate moves to squeeze the side wall of the mounting hole, and further, the foundation can be squeezed; in conclusion, the extrusion device is arranged, so that the possibility of foundation settlement can be reduced;
2. by arranging the sealing block, the first pouring groove can be sealed when the abutting block moves towards the direction close to the side wall of the mounting hole, so that the possibility that the concrete is inconvenient to pour due to the fact that the first pouring groove enters the soil body can be reduced; when the limiting block is contacted with the pushing assembly, the limiting block is separated from the sealing block under the action of the pushing assembly, the sealing block is reset under the action of the first spring, an operator can observe the sealing block when looking into the steel pipe pile, and then the driving motor can be turned off; through the arrangement, firstly, the sealing block can seal one end, close to the screw rod, of the first pouring groove, so that concrete can be conveniently poured into the abutting plate from the second pouring groove, secondly, the possibility of the abutting plate being crushed can be reduced, and finally, one end, far away from the screw rod, of the first pouring groove can be opened, so that the concrete can be conveniently poured;
3. the abutting block moves to drive the limiting block to move, the limiting block moves to drive the second pushing block to move, when the second pushing block is contacted with the first pushing block, the second pushing block continues to be driven to move, at the moment, the first pushing block drives the second pushing block to move towards the direction far away from the limiting block under the action of the inclined surface, and the second pushing block moves to drive the limiting block to move, so that the limiting block can be separated from the sealing block; through setting up the promotion subassembly, be convenient for make stopper and sealed piece separation.
Drawings
FIG. 1 is a schematic view of the overall structure of the embodiment;
FIG. 2 is a partial cross-sectional view of a highlighted square in an embodiment;
FIG. 3 is a schematic view showing the structure of the extrusion apparatus according to the embodiment;
FIG. 4 is a partial cross-sectional view of a highlighted drive mechanism of the embodiment;
figure 5 is a partial cross-sectional view of a highlighted stop assembly of an embodiment.
In the figure, 1, foundation; 11. mounting holes; 2. steel pipe piles; 21. a lead screw; 22. a second pouring groove; 23. a pipe joint; 3. an extrusion device; 31. a through hole; 311. sinking a groove; 32. a butting block; 321. a first pouring groove; 33. a butt joint plate; 4. a drive device; 41. a movable frame; 42. a foot brake wheel; 43. a handrail; 44. a drive motor; 45. a commutator; 46. a connecting mechanism; 461. a square block; 462. connecting blocks; 463. a square groove; 464. an abutment bolt; 5. a transmission mechanism; 51. a drive ring; 52. a moving ring; 53. a connecting rod; 54. a guide assembly; 541. a guide tube; 542. a vertical slot; 543. a guide bar; 6. a sealing device; 61. a sealing block; 62. a first spring; 63. a limiting component; 631. a limiting block; 632. a slider; 633. a chute; 634. a second spring; 7. a pushing assembly; 71. a first push block; 72. a second push block; 73. a bevel.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 3, the method for treating soft soil foundation disclosed by the invention comprises the following steps;
s1, drilling mounting holes 11: drilling a mounting hole 11 on the foundation 1 through a drilling machine;
s2, mounting the steel pipe pile 2: the steel pipe pile 2 is installed in the installation hole 11 through a pile driver, a lead screw 21 is vertically and rotatably connected in the steel pipe pile 2 through a bearing, a plurality of groups of extrusion devices 3 are vertically and sequentially arranged in the steel pipe pile 2, each group of extrusion devices 3 comprises a plurality of through holes 31 which are sequentially arranged on the side wall of the steel pipe pile 2 along the circumferential direction of the steel pipe pile 2, abutting blocks 32 which are in one-to-one correspondence and are connected to the through holes 31 in a sliding mode along the radial direction of the steel pipe pile 2, and a transmission mechanism 5 which is installed on the outer side wall of the lead screw 21 and used for driving the abutting blocks 32; a butting plate 33 is fixedly sleeved on one end, away from the screw 21, of the butting block 32, a sinking groove 311 for the butting plate 33 to be inserted is formed in one end, away from the screw 21, of the through hole 31, a driving device 4 for driving the screw 21 to rotate is arranged on the foundation 1, and the driving device 4 can move on the foundation 1;
s3, extruding the side wall of the mounting hole 11: the driving device 4 drives the screw 21 to rotate, at the moment, the abutting block 32 moves towards the outside of the steel pipe pile 2 under the action of the screw 21 and the transmission mechanism 5, the abutting block 32 moves to drive the abutting plate 33 to move, and the abutting plate 33 moves to squeeze the side wall of the mounting hole 11;
s4, pouring concrete: and pouring concrete into the steel pipe pile 2.
The driving device 4 drives the screw 21 to rotate, at the moment, the abutting block 32 moves towards the outside of the steel pipe pile 2 under the action of the screw 21 and the transmission mechanism 5, the abutting block 32 moves to drive the abutting plate 33 to move, the abutting plate 33 moves to squeeze the side wall of the mounting hole 11, and further, the foundation 1 can be squeezed; as described above, by providing the pressing device 3, the possibility of the foundation 1 sinking can be reduced.
As shown in fig. 1 and 2, in steps S2 and S3, the driving device 4 includes a moving frame 41, a plurality of service brake wheels 42 mounted on the bottom of the moving frame 41, and an armrest 43 mounted on the top of the moving frame 41; the top of the moving frame 41 is horizontally provided with a driving motor 44, an output shaft of the driving motor 44 is provided with a commutator 45, and an output shaft of the commutator 45 is provided with a connecting mechanism 46 for connecting the lead screw 21. When the screw 21 needs to be driven to rotate, the screw 21 is fixedly connected with an output shaft of the commutator 45 through the connecting mechanism 46, and then the driving motor 44 is started, and at the moment, the screw 21 rotates under the action of the commutator 45; the driving device 4 is arranged to drive the screw 21 to rotate.
The connecting mechanism 46 comprises a square block 461 fixedly connected to the top of the lead screw 21, a connecting block 462 in threaded connection with the bottom of the output shaft of the commutator 45, and a square groove 463 arranged at the bottom of the connecting block 462 for the square block 461 to be inserted; an abutting bolt 464 is connected to the side wall of the connecting block 462 in a threaded manner, and one end of the abutting bolt 464, which is far away from the bolt cap, can abut against the outer side wall of the square block 461. The square block 461 can be inserted into the square groove 463 by moving the moving frame 41 to align the connecting block 462 with the lead screw 21 and then moving the connecting block 462 downward by rotating the connecting block 462, and then the square block 461 is fixed by tightening the abutting bolt 464; the connecting block 462 is fixedly connected with the screw 21 by the connecting mechanism 46.
As shown in fig. 3 and 4, in step S2, the transmission mechanism 5 includes a driving ring 51 screwed to the lead screw 21 and a moving ring 52 rotatably coupled to the bottom of the driving ring 51 through a bearing and slidably coupled to the lead screw 21 in the vertical direction; a plurality of connecting rods 53 are hinged on the moving ring 52, the connecting rods 53 are arranged in one-to-one correspondence with the abutting blocks 32, and one end, far away from the moving ring 52, of each connecting rod 53 is hinged to the abutting block 32. When the abutting block 32 needs to be driven to move towards the outside of the steel pipe pile 2, the driving device 4 drives the screw rod 21 to rotate, the screw rod 21 drives the moving ring 52 to move downwards in a rotating mode, the driving ring 51 moves downwards to drive the moving ring 52 to move downwards, the moving ring 52 moves downwards to drive the connecting rod 53 to move, and the connecting rod 53 moves to drive the abutting block 32 to move towards the outside of the steel pipe pile 2; through setting up drive mechanism 5, be convenient for drive butt joint piece 32 and remove outside steel-pipe pile 2.
The outer side wall of the screw 21 is provided with a guide assembly 54 for guiding the moving ring 52, and the guide assembly 54 comprises a guide tube 541 fixed on the outer side wall of the screw 21 in a sleeved mode, a plurality of vertical grooves 542 arranged at the top of the guide tube 541, and a plurality of guide rods 543 connected with the vertical grooves 542 in a one-to-one corresponding mode in a sliding mode along the vertical direction; one end of each guide rod 543 remote from the guide tube 541 is fixed to the bottom of the moving ring 52. The vertical groove 542 guides the guide rod 543, so that the moving ring 52 can be reduced in the possibility of being deviated during the vertical sliding movement.
Outer wall accessible galvanizing of every steel-pipe pile 2, the mode of chrome plating or brush anti-rust paint is rust-resistant to lose, a plurality of butt joint piece 32 dislocation set on same steel-pipe pile 2, first groove 321 of pouring has been seted up at every butt joint piece 32's top, the one end that lead screw 21 was kept away from to first groove 321 runs through the one end setting that lead screw 21 was kept away from to butt joint piece 32, correspond first groove 321 of pouring and offer the second of pouring with first groove 321 intercommunication 22 at the top of steel-pipe pile 2, the top threaded connection that groove 22 was pour to the second has coupling 23, through setting up coupling 23, be convenient for the concrete gun and the second top of pouring groove 22 are connected. Through setting up first casting groove 321 and second casting groove 22, be convenient for with butt joint board 33 department pouring concrete to can make butt joint board 33 and mounting hole 11 lateral wall be connected more firmly.
As shown in fig. 4 and 5, a sealing device 6 for sealing one end of the first casting groove 321 away from the screw 21 is mounted on the abutting block 32, the sealing device 6 includes a sealing block 61 slidably connected to the first mounting groove along the radial direction of the steel pipe pile 2 and a first spring 62 fixedly connected to one end of the sealing block 61 close to the screw 21, one end of the first spring 62 away from the sealing block 61 is fixedly connected to an inner wall of one end of the first casting groove 321 close to the screw 21; a limiting component 63 for limiting the sealing block 61 is installed in the abutting block 32, and the limiting component 63 comprises a limiting block 631 connected to the side wall of the first pouring groove 321 in a sliding manner along the width direction of the abutting block 32; the limiting block 631 penetrates through the side wall of the first pouring groove 321, a sliding block 632 is fixedly connected to one side of the limiting block 631, a sliding groove 633 used for allowing the sliding block 632 to slide along the width direction of the abutting block 32 is formed in the side wall of the first pouring groove 321, a second spring 634 is fixedly connected to the inner wall of one end, away from the sealing block 61, of the sliding groove 633, and the other end of the second spring 634 is fixedly connected to one end, away from the sealing block 61, of the sliding block 632; one side of the limiting block 631, which is far away from the lead screw 21, abuts against one end of the sealing block 61, which is close to the lead screw 21, after the limiting block 631 abuts against the sealing block 61, one end of the sealing block 61, which is far away from the lead screw 21, and one end of the abutting block 32, which is far away from the lead screw 21, are coplanar, and a pushing assembly 7 for driving the limiting block 631 to move in a direction far away from the sealing block 61 is installed between the through hole 31 and the limiting block 631. By providing the sealing block 61, the first casting groove 321 can be sealed when the abutting block 32 moves in a direction close to the side wall of the mounting hole 11, so that the possibility that the first casting groove 321 enters the soil body and the concrete is not convenient to cast can be reduced; after the limiting block 631 contacts with the pushing assembly 7, the limiting block 631 is separated from the sealing block 61 under the action of the pushing assembly 7, at this time, the sealing block 61 is reset under the action of the first spring 62, at this time, an operator can observe the sealing block 61 when looking into the steel pipe pile 2, and then the driving motor 44 can be turned off; through the above arrangement, firstly the sealing block 61 can seal the end of the first casting groove 321 close to the screw 21, so that the concrete can be conveniently injected into the abutting plate 33 from the second casting groove 22, secondly the possibility that the abutting plate 33 is damaged by extrusion can be reduced, and finally the end of the first casting groove 321 far away from the screw 21 can be opened, so that the concrete can be conveniently cast.
The pushing assembly 7 includes a first pushing block 71 fixedly connected to the inner wall of the through hole 31 and a second pushing block 72 fixedly connected to the side of the limiting block 631 away from the screw 21, the opposite inner sides of the first pushing block 71 and the second pushing block 72 are respectively provided with an inclined surface 73, and the two inclined surfaces 73 are matched. The abutting block 32 moves to drive the limiting block 631 to move, the limiting block 631 moves to drive the second pushing block 72 to move, after the second pushing block 72 contacts with the first pushing block 71, the second pushing block 72 continues to be driven to move, at this time, the first pushing block 71 drives the second pushing block 72 to move in the direction away from the limiting block 631 under the action of the inclined surface 73, and the second pushing block 72 moves to drive the limiting block 631 to move, so that the limiting block 631 can be separated from the sealing block 61; through setting up push assembly 7, be convenient for make stopper 631 and sealed piece 61 separate.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (5)
1. A soft soil foundation treatment method is characterized in that: comprises the following steps;
s1, drilling mounting holes (11): drilling a mounting hole (11) on the foundation (1) through a drilling machine;
s2, mounting the steel pipe pile (2): the steel pipe pile (2) is installed in the installation hole (11) through a pile driver, a lead screw (21) is vertically and rotatably connected in the steel pipe pile (2), a plurality of groups of extrusion devices (3) are vertically and sequentially arranged in the steel pipe pile (2), each group of extrusion devices (3) comprises a plurality of through holes (31) which are sequentially formed in the side wall of the steel pipe pile (2) along the circumferential direction of the steel pipe pile (2), abutting blocks (32) which are in one-to-one correspondence and are connected to the through holes (31) in a sliding mode along the radial direction of the steel pipe pile (2), and a transmission mechanism (5) which is installed on the outer side wall of the lead screw (21) and is used for driving the abutting blocks (32) to move outwards of the steel pipe pile (2); a butt joint plate (33) is fixedly sleeved at one end, far away from the lead screw (21), of the butt joint block (32), a sinking groove (311) for the butt joint plate (33) to be inserted is formed at one end, far away from the lead screw (21), of the through hole (31), a driving device (4) for driving the lead screw (21) to rotate is arranged on the foundation (1), and the driving device (4) can move on the foundation (1);
a first pouring groove (321) is formed in the top of each abutting block (32), one end, far away from the lead screw (21), of each first pouring groove (321) penetrates through one end, far away from the lead screw (21), of each abutting block (32), a second pouring groove (22) communicated with the first pouring groove (321) is formed in the top of the steel pipe pile (2) corresponding to the first pouring groove (321), and a pipe joint (23) is connected to the top of the second pouring groove (22) in a threaded mode;
the butt joint block (32) is provided with a sealing device (6) for sealing one end, far away from the lead screw (21), of the first pouring groove (321), the sealing device (6) comprises a sealing block (61) connected to the first mounting groove in a sliding mode along the radial direction of the steel pipe pile (2) and a first spring (62) fixedly connected to one end, close to the lead screw (21), of the sealing block (61), and one end, far away from the sealing block (61), of the first spring (62) is fixedly connected to the inner wall of one end, close to the lead screw (21), of the first pouring groove (321); a limiting component (63) used for limiting the sealing block (61) is installed in the abutting block (32), and the limiting component (63) comprises a limiting block (631) connected to the side wall of the first pouring groove (321) in a sliding manner along the width direction of the abutting block (32); the limiting block (631) penetrates through the side wall of the first pouring groove (321), a sliding block (632) is fixedly connected to one side of the limiting block (631), a sliding groove (633) used for allowing the sliding block (632) to slide along the width direction of the abutting block (32) is formed in the side wall of the first pouring groove (321), a second spring (634) is fixedly connected to the inner wall of one end, far away from the sealing block (61), of the sliding groove (633), and the other end of the second spring (634) is fixedly connected to one end, far away from the sealing block (61), of the sliding block (632; one side, far away from the lead screw (21), of the limiting block (631) abuts against one end, close to the lead screw (21), of the sealing block (61), after the limiting block (631) abuts against the sealing block (61), one end, far away from the lead screw (21), of the sealing block (61) and one end, far away from the lead screw (21), of the abutting block (32) are coplanar, and a pushing assembly (7) used for driving the limiting block (631) to move towards the direction far away from the sealing block (61) is installed between the through hole (31) and the limiting block (631);
the pushing assembly (7) comprises a first pushing block (71) fixedly connected to the inner wall of the through hole (31) and a second pushing block (72) fixedly connected to one side, away from the screw rod (21), of the limiting block (631), inclined planes (73) are respectively arranged on the opposite inner sides of the first pushing block (71) and the second pushing block (72), and the two inclined planes (73) are matched;
s3, extruding the side wall of the mounting hole (11): the lead screw (21) is driven to rotate through the driving device (4), at the moment, the abutting block (32) moves towards the outside of the steel pipe pile (2) under the action of the lead screw (21) and the transmission mechanism (5), the abutting block (32) moves to drive the abutting plate (33) to move, and the abutting plate (33) moves to squeeze the side wall of the mounting hole (11);
s4, pouring concrete: and pouring concrete into the steel pipe pile (2).
2. A soft soil foundation treatment method according to claim 1, characterized in that: in the steps S2 and S3, the driving device (4) includes a moving frame (41), a plurality of service brake wheels (42) mounted at the bottom of the moving frame (41), and a handrail (43) mounted at the top of the moving frame (41); the top of the moving frame (41) is horizontally provided with a driving motor (44), an output shaft of the driving motor (44) is provided with a commutator (45), and an output shaft of the commutator (45) is provided with a connecting mechanism (46) for connecting the lead screw (21).
3. A soft soil foundation treatment method according to claim 2, characterized in that: the connecting mechanism (46) comprises a square block (461) fixedly connected to the top of the lead screw (21), a connecting block (462) in threaded connection with the bottom of the output shaft of the commutator (45) and a square groove (463) which is formed in the bottom of the connecting block (462) and used for the square block (461) to be inserted; the side wall of the connecting block (462) is in threaded connection with an abutting bolt (464), and one end, far away from a bolt cap, of the abutting bolt (464) can abut against the outer side wall of the square block (461).
4. A soft soil foundation treatment method according to claim 1, characterized in that: in the step S2, the transmission mechanism (5) comprises a driving ring (51) which is in threaded connection with the lead screw (21) and a moving ring (52) which is rotationally connected with the bottom of the driving ring (51) and is connected with the lead screw (21) in a sliding manner along the vertical direction; the moving ring (52) is hinged with a plurality of connecting rods (53), the connecting rods (53) are arranged in a one-to-one correspondence mode with the abutting blocks (32), and one end, far away from the moving ring (52), of each connecting rod (53) is hinged to the abutting block (32).
5. A soft soil foundation treatment method according to claim 4, characterised in that: the outer side wall of the screw rod (21) is provided with a guide assembly (54) for guiding the moving ring (52), and the guide assembly (54) comprises a guide pipe (541) fixed on the outer side wall of the screw rod (21) in a sleeved mode, a plurality of vertical grooves (542) formed in the top of the guide pipe (541) and a plurality of guide rods (543) which are connected with the vertical grooves (542) in a sliding mode in the vertical direction in a one-to-one correspondence mode; one end of each guide rod (543) far away from the guide tube (541) is fixedly connected to the bottom of the moving ring (52).
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| CN112942330B (en) * | 2021-01-30 | 2022-02-22 | 唐山中鼎建筑设计咨询有限公司 | Connect stable steel-pipe pile connection structure |
| CN112942298B (en) * | 2021-02-02 | 2022-07-29 | 阳江市源丰建设工程有限公司 | Consolidation method of silt soft foundation |
| CN114673143B (en) * | 2022-03-22 | 2024-04-02 | 浙江恒炜建设集团有限公司 | Municipal soft foundation road reinforcement method |
| CN115262536A (en) * | 2022-09-30 | 2022-11-01 | 江苏大力神管桩有限公司 | Hollow concrete pile |
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| CN110158632A (en) * | 2019-05-28 | 2019-08-23 | 武汉中力岩土工程有限公司 | The foundation structure and its method of soft soil foundation anti-settling |
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| CN110158632A (en) * | 2019-05-28 | 2019-08-23 | 武汉中力岩土工程有限公司 | The foundation structure and its method of soft soil foundation anti-settling |
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