CN114575330B - Stirring, grouting and reinforcing treatment method for deep cement of soft soil foundation - Google Patents
Stirring, grouting and reinforcing treatment method for deep cement of soft soil foundation Download PDFInfo
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- CN114575330B CN114575330B CN202210236688.8A CN202210236688A CN114575330B CN 114575330 B CN114575330 B CN 114575330B CN 202210236688 A CN202210236688 A CN 202210236688A CN 114575330 B CN114575330 B CN 114575330B
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- soft soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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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
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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
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
Abstract
The application relates to a stirring grouting reinforcement treatment method for deep cement of a soft soil foundation, which relates to the field of constructional engineering and comprises the following steps: s1, placing the deep cement of the soft soil foundation on the ground by a mixing pile machine for mixing and grouting; s2, starting the mixing pile machine, and drilling the drill of the machine body on the soft soil foundation to the expected depth in a positive circulation manner; s3, reversely circulating the drill bit of the machine body to lift the drill and spray concrete slurry; s4, repeatedly drilling down the drill bit of the machine body to the set depth; s5, lifting the drill bit of the machine body and spraying concrete slurry to the ground surface; and S6, waiting for the concrete slurry to be solidified and form a pile. This application has the effect that improves cement mixing stake and consolidate soft soil foundation.
Description
Technical Field
The application relates to the field of building engineering, in particular to a stirring, grouting and reinforcing treatment method for deep cement of a soft soil foundation.
Background
The cement mixing pile is an effective form of soft foundation treatment, and is characterized by that it uses cement as main agent of solidifying agent, and utilizes mixing pile machine to spray cement into soil body and fully mix them to make cement and soil produce a series of physical and chemical reactions so as to make the soft soil be hardened and raise foundation strength. And a cement mixing pile machine is used when the cement mixing pile is poured on the soft soil foundation, the cement mixing pile machine is placed on the soft soil foundation, and then the cement mixing pile machine is vertically downwards stirred to pour concrete, so that the cement mixing pile is formed.
When the cement mixing pile machine is used for construction on a soft soil foundation, due to the fact that the thixotropy of the soft soil foundation is high, the weight of the cement mixing pile machine is large, the cement mixing pile machine is prone to enabling the soft soil foundation to partially settle during construction, the cement mixing pile machine is enabled to incline, the cement mixing pile is enabled to incline, the verticality between the cement mixing pile and the ground is low, and the reinforcing effect of the cement mixing pile on the soft soil foundation is reduced.
Disclosure of Invention
In order to improve the reinforcing effect of the cement mixing pile on the soft soil foundation, the application provides a deep cement mixing grouting reinforcement treatment method for the soft soil foundation.
The application provides a soft soil foundation deep cement stirring slip casting reinforcement processing method adopts following technical scheme:
a stirring grouting reinforcement treatment method for deep cement of a soft soil foundation comprises the following steps:
s1, placing the mixing pile machine for stirring and grouting deep cement of the soft soil foundation on the ground, wherein the mixing pile machine comprises a machine body, a balance plate and a bottom plate, the machine body is fixedly connected to the balance plate, the lower surface of the balance plate is fixedly connected with a plurality of supporting columns, the upper surface of the bottom plate is fixedly connected with sleeves corresponding to the supporting columns, and each supporting column is inserted into the corresponding sleeve;
the balance plate is also provided with a plurality of sliding grooves, one end of each sliding groove, which is far away from each other, corresponds to one pillar, a position supplementing piece is arranged in the balance plate and comprises a position supplementing block, two inserting blocks are inserted in the position supplementing block, the length directions of the two inserting blocks are arranged along the radial direction of the position supplementing block, and the bottom wall of the position supplementing block is provided with a through hole penetrating through the bottom wall of the position supplementing block;
a mounting cavity is formed in the bottom plate corresponding to the support column, a blanking hole communicated with the sliding groove is formed in the lower surface of the balance plate, the blanking hole is formed in the sliding groove corresponding to the mounting cavity, a supporting plate is connected into the mounting cavity, an air cylinder is vertically and fixedly connected to the bottom wall of the mounting cavity, and an air pump is connected onto the air cylinder;
the cylinder penetrates through the supporting plate, an ejector rod is fixedly connected to the end face of a piston rod of the cylinder, the ejector rod and the cylinder are coaxially arranged, a tip is arranged at one end, away from the cylinder, of the ejector rod, a discharge hole communicated with the mounting cavity is formed in the position, corresponding to the support column, on the upper surface of the bottom plate, and the diameter of the discharge hole is approximately equal to that of the position supplementing block;
s2, starting the mixing pile machine, and drilling the drill of the machine body on the soft soil foundation to the expected depth in a positive circulation manner;
s3, reversely circulating the drill bit of the machine body to lift the drill and spray concrete slurry;
s4, repeatedly drilling down the drill bit of the machine body to the set depth;
s5, lifting the drill bit of the machine body and spraying concrete slurry to the ground surface;
and S6, waiting for the concrete slurry to be solidified and form a pile.
By adopting the technical scheme, the mixing pile machine is placed on the ground, when the ground surface inclines, the bottom plate, the balance plate and the machine body incline, the position supplementing piece in the sliding groove slides to the lower side along the sliding groove, and when the position supplementing piece slides to the blanking hole, the position supplementing piece falls onto the supporting plate and slides along the inclined supporting plate;
when the position supplementing piece slides to the position below the supporting column, the air pump is started, the air pump provides power for the air cylinder, a piston rod of the air cylinder extends out and pushes the ejector rod to move, the ejector rod pushes the position supplementing block to move upwards, and when the position supplementing block moves into the sleeve, the ejector rod continues to move upwards, so that the two inserting blocks are pushed to move towards the direction away from each other, the two inserting blocks are partially positioned outside the position supplementing block, and the possibility that the part blocks fall into the mounting cavity is reduced;
at the in-process of mending a position piece rebound, mend a position piece and promote pillar and balance plate rebound, minimize the inclination of balance plate, make the balance plate be in the horizontality as far as possible, the straightness height of hanging down of the cement stirring stake that makes the fuselage body process out has improved the reinforcement effect of cement stirring stake to the soft soil foundation.
Optionally, a control assembly for controlling the start and stop of the air pump is arranged in the installation cavity.
By adopting the technical scheme, the control assembly controls the automatic control air pump to be opened or closed, and the purpose of automatically controlling the air cylinder is achieved.
Optionally, the control assembly includes the layer board, the layer board is followed the direction of height of installation cavity slides, the lower surface of layer board with a plurality of springs of fixedly connected with between the diapire of installation cavity, the upper surface of layer board with distance between the installation cavity top surface equals the height of filling the position piece, a branch of fixedly connected with on the lower surface of layer board, on the diapire of installation cavity with a shift knob that the position fixedly connected with that branch corresponds controlled the air pump and opened the start-stop, shift knob is normally open switch.
By adopting the technical scheme, after the position supplementing block falls onto the supporting plate, the position supplementing block slides to the lower side and presses the supporting plate to move downwards, the supporting plate drives the supporting rod to move downwards, so that the supporting rod presses the switch button, the switch button is switched on at the moment to enable the air pump to work, and the air cylinder and the ejector rod push the position supplementing block on the supporting plate to move upwards; when the position supplementing block is separated from the supporting plate, the spring restores to deform and pushes the supporting plate and the supporting rod to move upwards, so that the supporting rod is separated from contact with the switch button, the switch button is disconnected at the moment, and the air pump controls the piston rod of the air cylinder to retract until the ejector rod is located at the initial position; when the spring is completely restored to be deformed, the supporting plate is restored to the initial position.
Optionally, each sliding groove is provided with an adjusting component for controlling the frequency of the position compensating block falling into the installation cavity at a position close to the blanking hole.
Through adopting above-mentioned technical scheme, reduce that to drop to the layer board that the position piece is concentrated mends.
Optionally, the adjusting assembly comprises an adjusting motor fixedly connected to the lower surface of the balance plate, an output shaft of the adjusting motor penetrates through the lower surface of the balance plate, the end portion of the output shaft of the adjusting motor is located in the sliding groove, a baffle is fixedly connected to the end portion of the output shaft of the adjusting motor, the length of the baffle is larger than the diameter of the blanking hole, and the baffle blocks the blanking hole.
Through adopting above-mentioned technical scheme, place the back on the bottom surface when will stirring stake machine, start a plurality of accommodate motor simultaneously, the output shaft of accommodate motor rotates and drives the baffle and rotate, when mending the position piece and drop to the groove that slides outside, the baffle rotates and shelters from the unloading hole to reduce the possibility that has a plurality of benefit position pieces to drop to the installation cavity simultaneously.
Optionally, a bellows is fixedly connected to the lower surface of the balance plate, the blanking hole is located in the bellows, one end, far away from the balance plate, of the bellows is fixedly connected to the upper surface of the bottom plate, and the bellows is communicated with the installation cavity.
Through adopting above-mentioned technical scheme, make the position piece of mending that slides in the groove that slides can follow the better landing of bellows to the installation cavity in, reduce the possibility that mends the position piece landing outside the bottom plate.
Optionally, a guide surface corresponding to the tip is disposed on the bottom surface of the insertion block.
By adopting the technical scheme, the two inserting blocks can be better separated by the ejector rod.
Optionally, the last fixed surface of benefit position piece is connected with the kicking block, the kicking block is the toper, the most advanced of kicking block is towards keeping away from the direction setting of benefit position piece, just the kicking block with the spigot surface laminating.
By adopting the technical scheme, the matching between the two adjacent bit compensating blocks is better.
In summary, the present application includes at least one of the following beneficial technical effects:
1. through S1, S2, S3, S4, S5 and S6, when the machine body inclines, the inclination angle of the machine body is reduced as much as possible, so that the perpendicularity of a cement mixing pile processed by the machine body is as high as possible, and the reinforcing effect of the cement mixing pile on a soft soil foundation is improved;
2. the purpose of automatically pushing the position supplementing block falling on the supporting plate into the sleeve is realized by arranging the spring, the supporting rod and the switch button;
3. through setting up accommodate motor and baffle, make the baffle carry out the shutoff to the unloading hole, reduce the condition that has a plurality of benefit position pieces to drop to the installation cavity simultaneously.
Drawings
Fig. 1 is a schematic view of the overall structure of a mixing pile machine for mixing and grouting deep cement of a soft soil foundation according to an embodiment of the present application.
Fig. 2 is a sectional view showing the overall structure of the mixing pile machine for stirring and grouting deep cement of a soft soil foundation according to the embodiment of the present application.
Fig. 3 is an enlarged view at a in fig. 2.
Fig. 4 is a sectional view showing the overall structure of the pusher assembly and the control assembly.
FIG. 5 is a schematic diagram of the overall structure of an adjustment assembly embodied in an embodiment of the present application.
Description of reference numerals: 1. a body of the machine body; 2. a balance plate; 21. a pillar; 22. a cylindrical groove; 23. a sliding groove; 24. a blanking hole; 3. a base plate; 31. a sleeve; 32. a mounting cavity; 33. a discharge hole; 4. a bellows; 5. a position supplementing piece; 51. a bit supplementing block; 52. inserting grooves; 53. an insertion block; 531. a guide surface; 54. a top block; 6. a material pushing assembly; 61. a cylinder; 62. a top rod; 621. a tip; 7. a control component; 71. a support plate; 711. a mating hole; 72. a spring; 73. a strut; 74. a switch button; 8. an adjustment assembly; 81. adjusting the motor; 82. and a baffle plate.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses a stirring, grouting and reinforcing treatment method for deep cement of a soft soil foundation. Referring to fig. 1, stirring stake machine for stirring and grouting deep cement of soft soil foundation includes fuselage body 1, fixed connector balance plate 2 on the lower surface of fuselage body 1, and fuselage body 1 perpendicular to balance plate 2. The bottom plate 3 is arranged below the balance plate 2, the bottom plate 3 and the balance plate 2 are arranged in parallel, and the bottom plate 3 is placed on the ground.
A plurality of support columns 21 are vertically and fixedly connected to the lower surface of the balance plate 2, sleeves 31 are fixedly connected to the positions, corresponding to the support columns 21, on the upper surface of the bottom plate 3, each sleeve 31 and the corresponding support column 21 are coaxially arranged, and each support column 21 is slidably inserted into the corresponding sleeve 31; the plurality of pillars 21 are uniformly distributed on the lower surface of the balance plate 2, and the connecting line of the cross-section midpoints of the plurality of pillars 21 is circular, and the number of the pillars 21 is four in the embodiment.
Referring to fig. 1 and 2, one side of each upright column is provided with a corrugated pipe 4, one end of each corrugated pipe 4 is fixedly connected to the lower surface of the balance plate 2, the other end of each corrugated pipe 4 is fixedly connected to the upper surface of the bottom plate 3, the corrugated pipes 4 are axially arranged along the axial direction of the support column 21, the connecting lines of the midpoints of the cross sections of the plurality of corrugated pipes 4 are circular, and the circle where the corrugated pipes 4 are located and the circle where the support column 21 is located are concentrically arranged; a cylindrical groove 22 is formed in the upper surface of the balance plate 2, and the length direction of the cylindrical groove 22 is arranged along the height direction of the balance plate 2; the lower surface of the balance plate 2 is provided with a blanking hole 24 at a position corresponding to the corrugated pipe 4, and the corrugated pipe 4 is provided with a sliding groove 23 communicating the blanking hole 24 with the cylindrical groove 22.
When the bottom plate 3, the balance plate 2 and the machine body 1 incline due to sinking of the soft soil foundation, the position supplementing piece 5 moves towards the inclining direction and enters the corresponding sliding groove 23, and the position supplementing piece 5 slides along the sliding groove 23; when the position supplementing piece 5 slides to the blanking hole 24, the position supplementing piece 5 falls into the corrugated pipe 4 through the blanking hole 24, then slides along the corrugated pipe 4 and falls into the installation cavity 32, and the position supplementing piece 5 falls into the installation cavity 32 and triggers the control assembly 7.
The control assembly 7 controls the pushing assembly 6 to work, so that the pushing assembly 6 pushes the position supplementing piece 5 to move to the sleeve 31, the position supplementing piece 5 pushes the support column 21 corresponding to the sleeve 31 to move upwards, the inclination angle of the inclined balance plate 2 is reduced, the verticality of the cement stirring pile processed by the machine body 1 is high as much as possible, and the reinforcing effect of the cement stirring pile on the soft soil foundation is improved. When the position supplementing piece 5 is positioned in the sleeve 31, the control component 7 controls the material pushing component 6 to stop working.
Referring to fig. 2 and 3, the position supplementing member 5 includes a cylindrical position supplementing block 51, the diameter of the position supplementing block 51 is approximately equal to the diameter of the cylindrical groove 22, a cavity is formed in the position supplementing block 51, and a through hole communicated with the cavity of the position supplementing block 51 is formed on the bottom surface of the position supplementing block 51. The sidewall of the position supplementing block 51 is further provided with a plurality of inserting grooves 52 communicated with the cavity of the position supplementing block 51, the inserting grooves 52 are distributed at equal intervals along the circumferential direction of the position supplementing block 51, and the number of the inserting grooves 52 is two in the embodiment; each inserting-connecting block 53 is inserted into each inserting-connecting groove 52, the side walls of the two inserting-connecting blocks 53 close to each other are bonded, and the side walls of the two inserting-connecting blocks 53 far away from each other are located in the filling block 51.
Referring to fig. 2 and 4, the pushing assembly 6 includes a cylinder 61 fixedly connected to the bottom wall of the mounting cavity 32, a piston rod of the cylinder 61 is disposed toward a direction close to the pillar 21, the cylinder 61 and the pillar 21 are coaxially disposed, and an air pump is connected to the cylinder 61. The upper surface of the bottom plate 3 is provided with a discharge hole 33 at a position corresponding to the cylinder 61, the discharge hole 33 is communicated with the mounting cavity 32, the diameter of the discharge hole 33 is smaller than that of the support column 21, and the diameter of the position supplementing block 51 is smaller than that of the discharge hole 33. The end part of the piston rod of the cylinder 61 is fixedly connected with a push rod 62, the push rod 62 and the cylinder 61 are coaxially arranged, one end, far away from the cylinder 61, of the push rod 62 is provided with a tip 621, the diameter of the push rod 62 is larger than that of the telescopic rod of the cylinder 61, and the diameter of the push rod 62 is smaller than that of the discharge hole 33.
The control assembly 7 comprises a supporting plate 71 connected in the mounting cavity 32 in a sliding manner, the supporting plate 71 can slide along the height direction of the mounting cavity 32, and each side wall of the supporting plate 71 is in contact with the corresponding cavity wall of the mounting cavity 32; the supporting plate 71 is provided with a matching hole 711 penetrating through the supporting plate 71 at a position corresponding to the cylinder 61, the diameter of the matching hole 711 is larger than that of the cylinder 61, the diameter of the position supplementing block 51 is larger than that of the matching hole 711, and the cylinder 61 penetrates through the supporting plate 71 through the matching hole 711. A plurality of springs 72 are fixedly connected to the lower surface of the supporting plate 71, the springs 72 are uniformly distributed along the surface of the supporting plate 71, the number of the springs 72 is two in the embodiment, the springs 72 support the supporting plate 71, a gap exists between the supporting plate 71 and the bottom wall of the installation cavity 32, and the distance between the upper surface of the supporting plate 71 and the top surface of the installation cavity 32 is equal to the height of the position supplementing piece 5.
A supporting rod 73 is vertically and fixedly connected to the lower surface of the supporting plate 71, a switch button 74 for controlling the start and stop of the air pump is installed on the bottom wall of the installation cavity 32 corresponding to the supporting rod 73, the switch button 74 is a normally open switch, and a gap exists between the supporting rod 73 and the switch button 74. In the initial state, the switch button 74 is turned off, and the extension/contraction rod of the cylinder 61 and the rod 62 are both located below the support plate 71.
In order to make the supporting plate 71 slide better along the installation cavity 32, two opposite side walls of the supporting plate 71 are fixedly connected with a sliding block, a sliding groove corresponding to the sliding block is formed in the cavity wall of the installation cavity 32, and the length direction of the sliding groove is arranged along the height direction of the installation cavity 32. When the supporting plate 71 slides along the installation cavity 32, the sliding block is matched with the sliding groove, and the possibility of clamping stagnation between the supporting plate 71 and the cavity wall of the installation cavity 32 is reduced.
When the soft soil foundation sinks, the bottom plate 3 drives the sleeve 31, the pillar 21, the balance plate 2 and the machine body 1 to incline, and at the moment, the supporting plate 71 in the bottom plate 3 is also inclined; one position supplementing piece 5 in the balance plate 2 slides into the corresponding sliding groove 23, when the position supplementing piece 5 slides to the upper side of the corrugated pipe 4, the position supplementing piece 5 falls into the corrugated pipe 4, the position supplementing piece 5 slides along the corrugated pipe 4 and falls onto the supporting plate 71, the position supplementing piece 5 falls onto the supporting plate 71 and then presses the supporting plate 71 and the supporting rod 73 to move downwards, the supporting rod 73 moves to press the switch button 74, so that an air pump connected with the air cylinder 61 is started, and the supporting plate 71 moves downwards to compress the spring 72.
After the position supplementing piece 5 falls onto the supporting plate 71, the position supplementing piece slides to the matching hole 711 along the inclined supporting plate 71, the air pump is started to provide power for the air cylinder 61, the piston rod of the air cylinder 61 extends out to drive the ejector rod 62 to move upwards, the tip 621 of the ejector rod 62 is inserted into the two inserting blocks 53 and pushes the two inserting blocks 53 and the position supplementing block 51 to move upwards, and at the moment, the hole wall of the discharge hole 33 coats the two inserting blocks 53, so that the two inserting blocks 53 are still completely located in the position supplementing block 51.
When the upper surface of the position supplementing block 51 is in contact with the support column 21, the position supplementing block 51 pushes the support column 21 and the balance plate 2 to move along with the push rod 62 continuously pushing the position supplementing block 51, when the position supplementing block 51 passes through the discharging hole 33 and is located in the sleeve 31, the push rod 62 continuously moves upwards, the push rod 62 pushes the two inserting blocks 53 to move towards the direction away from each other while moving, and until the side walls, away from each other, of the two inserting blocks 53 are located outside the position supplementing block 51 and are in contact with the inner side wall of the sleeve 31. At this moment, the position compensating block 51 is matched with the supporting rod 73, so that the lower side of the balance plate 2 moves upwards, the inclination angle of the balance plate 2 is reduced, and the perpendicularity of the cement mixing pile processed by the machine body 1 is high as much as possible.
After the position compensating part 5 is separated from the supporting plate 71, the spring 72 recovers deformation and pushes the supporting plate 71 and the supporting rod 73 to move upwards, the supporting rod 73 is separated from contact with the switch button 74, so that the switch button 74 is disconnected, the air pump retracts the piston rod of the air cylinder 61, and the piston rod of the air cylinder 61 retracts to drive the ejector rod 62 to move to the initial position.
In order to make the top bar 62 better push the two insertion blocks 53 to move, the bottom surfaces of the insertion blocks 53 are provided with inclined guide surfaces 531, and the guide surfaces 531 are matched with the tip 621 of the top bar 62. In order to make the matching between two adjacent position supplementing blocks 51 better, a conical top block 54 is fixedly connected to the upper surface of each position supplementing block 51, the tip 621 of each top block 54 is arranged in the direction away from the position supplementing block 51, and each top block 54 is attached to the guide surface 531.
Referring to fig. 2 and 5, in order to reduce the frequency of dropping the position compensating member 5 into the corrugated pipe 4, an adjusting assembly 8 is provided at the position where each sliding groove 23 is connected with the blanking hole 24. The adjusting assembly 8 comprises an adjusting motor 81 fixedly connected to the lower surface of the balance plate 2, the axial direction of an output shaft of the adjusting motor 81 is arranged along the axial direction of the corrugated pipe 4, the output shaft of the adjusting motor 81 penetrates through the lower surface of the balance plate 2, the end part of the output shaft of the adjusting motor 81 is located in the sliding groove 23, a baffle 82 is fixedly connected to the end part of the output shaft of the adjusting motor 81, the baffle 82 is perpendicular to the lower surface of the balance plate 2, the length of the baffle 82 is larger than the diameter of the blanking hole 24, and the baffle 82 blocks the blanking hole 24.
When placing bottom plate 3 on subaerial, start a plurality of accommodate motor 81 simultaneously, accommodate motor 81's output shaft rotates and drives baffle 82 and rotate, and when bottom plate 3 was the tilt state and baffle 82 rotated and made unloading hole 24 open, a compensation piece 5 in the groove 23 that slides dropped to bellows 4 in. The rotation period of the output shaft of the motor 81 is adjusted to a period required for the movement of the position compensating member 5 from the slide groove 23 into the sleeve 31, thereby reducing the possibility that the position compensating member 5 continuously drops into the corrugated tube 4.
Based on the stirring pile machine, the method for reinforcing the deep cement stirring grouting of the soft soil foundation comprises the following steps:
s1, an operator firstly moves the bottom plate 3 to a processing position to enable the machine body 1 to correspond to the processing position, then simultaneously starts a plurality of adjusting motors 81, and the output shafts of the adjusting motors 81 rotate to drive the corresponding baffles 82 to rotate;
s2, sequentially placing a plurality of position supplementing pieces 5 into the cylindrical grooves 22, and enabling the top block 54 of each position supplementing piece 5 to face upwards;
s3, starting the mixing pile machine, drilling the drill bit of the machine body 1 on the soft soil foundation to the expected depth in a positive circulation mode, when the bottom plate 3 inclines in the drilling process, dropping a compensation block 51 onto the supporting plate 71 along the sliding groove 23 and the corrugated pipe 4 to enable the supporting plate 71 and the supporting rod 73 to move downwards, and compressing the spring 72 in the moving process of the supporting plate 71;
the supporting rod 73 moves to the press switch button 74, the air pump connected with the air cylinder 61 is connected and provides power for the air cylinder 61, the piston rod of the air cylinder 61 drives the ejector rod 62 to move, the ejector rod 62 pushes the insertion blocks 53 and the position supplementing blocks 51 to move into the sleeve 31, when the position supplementing blocks 51 move into the sleeve 31, the position supplementing blocks 51 push the supporting columns 21 and the balance plate 2 to move upwards, the two insertion blocks 53 extend out of the position supplementing blocks 51, and the possibility that the position supplementing blocks 51 fall into the mounting cavity 32 is reduced;
when the position supplementing block 51 is separated from the supporting plate 71, the spring 72 restores deformation and pushes the supporting plate 71 and the supporting rod 73 to move upwards, so that the switch button 74 is switched off, and the air pump controls the piston rod of the air cylinder 61 and the ejector rod 62 to retract until the air cylinder 61 restores to the initial position;
s4, reversely circulating the drill bit of the machine body 1 to lift the drill and spray concrete slurry;
s5, when the drill bit of the machine body 1 is lifted to 0.3 m below the reference surface, the drill bit of the machine body 1 repeatedly drills down to the set depth;
s6, lifting the drill bit of the machine body 1 and spraying concrete slurry to the ground surface;
and S7, waiting for the concrete slurry to be solidified and form a pile.
The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (5)
1. A stirring, grouting and reinforcing treatment method for deep cement of a soft soil foundation is characterized by comprising the following steps: the reinforcement treatment method comprises the following steps:
s1, placing the stirring pile machine for stirring and grouting deep cement of the soft soil foundation on the ground, wherein the stirring pile machine comprises a machine body (1), a balance plate (2) and a bottom plate (3), the machine body (1) is fixedly connected to the balance plate (2), the lower surface of the balance plate (2) is fixedly connected with a plurality of pillars (21), the upper surface of the bottom plate (3) is fixedly connected with sleeves (31) corresponding to the pillars (21), and each pillar (21) is inserted into the corresponding sleeve (31);
the balance plate (2) is further provided with a plurality of sliding grooves (23), one end, away from each other, of each sliding groove (23) corresponds to one support column (21), a position supplementing piece (5) is placed in the balance plate (2), each position supplementing piece (5) comprises a position supplementing block (51), two inserting blocks (53) are inserted into each position supplementing block (51), the length directions of the two inserting blocks (53) are arranged along the radial direction of each position supplementing block (51), and the bottom wall of each position supplementing block (51) is provided with a through hole penetrating through the bottom wall of each position supplementing block (51);
a mounting cavity (32) is arranged in the bottom plate (3) corresponding to the strut (21), a blanking hole (24) communicated with the sliding groove (23) is arranged on the lower surface of the balance plate (2), the blanking hole (24) is positioned at the position of the sliding groove (23) corresponding to the mounting cavity (32), the lower surface of the balance plate (2) is fixedly connected with a corrugated pipe (4), the blanking hole (24) is positioned in the corrugated pipe (4), one end of the corrugated pipe (4) far away from the balance plate (2) is fixedly connected to the upper surface of the bottom plate (3), the corrugated pipe (4) is communicated with the installation cavity (32), a supporting plate (71) is connected in the installation cavity (32), an air cylinder (61) is vertically and fixedly connected to the bottom wall of the mounting cavity (32), and an air pump is connected to the air cylinder (61);
the cylinder (61) penetrates through the supporting plate (71), an ejector rod (62) is fixedly connected to the end face of a piston rod of the cylinder (61), the ejector rod (62) and the cylinder (61) are coaxially arranged, a tip (621) is arranged at one end, away from the cylinder (61), of the ejector rod (62), a discharge hole (33) communicated with the mounting cavity (32) is formed in the position, corresponding to the support column (21), on the upper surface of the bottom plate (3), and the diameter of the discharge hole (33) is approximately equal to that of the position supplementing block (51); a control assembly (7) for controlling the start and stop of the air pump is arranged in the installation cavity (32), the control assembly (7) comprises a supporting plate (71), the supporting plate (71) slides along the height direction of the installation cavity (32), a plurality of springs (72) are fixedly connected between the lower surface of the supporting plate (71) and the bottom wall of the installation cavity (32), the distance between the upper surface of the supporting plate (71) and the top surface of the installation cavity (32) is equal to the height of the position supplementing piece (5), a supporting rod (73) is fixedly connected to the lower surface of the supporting plate (71), a switch button (74) for controlling the start and stop of the air pump is fixedly connected to the position, corresponding to the supporting rod (73), on the bottom wall of the installation cavity (32), and the switch button (74) is a normally open switch;
s2, starting the mixing pile machine, and drilling the drill bit of the machine body (1) on the soft soil foundation to the expected depth in a positive circulation manner;
s3, reversely circulating the drill bit of the machine body (1) to lift the drill and spray concrete slurry;
s4, repeatedly drilling down the drill bit of the machine body (1) to a set depth;
s5, lifting the drill bit of the machine body (1) and spraying concrete slurry to the ground surface;
and S6, waiting for the concrete slurry to be solidified and form a pile.
2. The deep cement stirring grouting reinforcement treatment method for the soft soil foundation according to claim 1, characterized in that: and each sliding groove (23) is provided with an adjusting component (8) for controlling the frequency of the position compensating block (51) falling into the mounting cavity (32) at a position close to the blanking hole (24).
3. The deep cement stirring grouting reinforcement treatment method for the soft soil foundation according to claim 2, characterized in that: adjusting part (8) are including fixed connection adjusting motor (81) on balance plate (2) lower surface, the output shaft of adjusting motor (81) runs through balance plate (2) lower surface, just the tip of adjusting motor (81) output shaft is located in sliding groove (23), the tip fixedly connected with baffle (82) of adjusting motor (81) output shaft, the length of baffle (82) is greater than the diameter of unloading hole (24), just baffle (82) are right unloading hole (24) shelter from.
4. The deep cement stirring grouting reinforcement treatment method for the soft soil foundation according to claim 1, characterized in that: the bottom surface of the insertion block (53) is provided with a guide surface (531) corresponding to the tip end (621).
5. The deep cement stirring grouting reinforcement treatment method for the soft soil foundation according to claim 4, characterized in that: the upper surface fixed connection of filling a position piece (51) has kicking block (54), kicking block (54) are the toper, pointed end (621) of kicking block (54) are towards keeping away from fill a position piece (51) the direction setting, just kicking block (54) with spigot surface (531) laminating.
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| JP3184390B2 (en) * | 1994-03-11 | 2001-07-09 | 日本車輌製造株式会社 | Tubing equipment |
| CN201363088Y (en) * | 2009-03-11 | 2009-12-16 | 上海三高石油设备有限公司 | Land oil drilling machine capable of horizontal adjustment and bodily movement |
| CN105804653B (en) * | 2014-09-19 | 2017-10-03 | 合肥工业大学 | A kind of method of adjustment of vertical drilling automatic regulating apparatus |
| CN206860097U (en) * | 2017-07-06 | 2018-01-09 | 大成科创基础建设股份有限公司 | Pile foundation draws hole perpendicularity correcting device |
| CN112554178B (en) * | 2020-12-01 | 2022-04-15 | 浙江河海建设有限公司 | Construction method of deep cement mixing pile |
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