CN111794219A - Construction method for reinforcing foundation by single-machine double-shaft jet grouting pile - Google Patents
Construction method for reinforcing foundation by single-machine double-shaft jet grouting pile Download PDFInfo
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- CN111794219A CN111794219A CN202010704932.XA CN202010704932A CN111794219A CN 111794219 A CN111794219 A CN 111794219A CN 202010704932 A CN202010704932 A CN 202010704932A CN 111794219 A CN111794219 A CN 111794219A
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- double
- machine
- shaft
- pile
- drill rod
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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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
Abstract
The invention discloses a construction method for reinforcing a foundation by a single-machine double-shaft rotary jet pile, which belongs to the field of foundation reinforcing methods, and comprises a single-machine double-shaft rotary jet pile machine, wherein the single-machine double-shaft rotary jet pile machine comprises a pile machine platform, an operation chamber for controlling the work of the rotary jet pile machine is arranged on the pile machine platform, the bottom of the pile machine platform moves on a steel track through two rows of steel rollers, and the single-machine double-shaft rotary jet pile machine further comprises a double-shaft drill rod, and the double-shaft drill rod is synchronously driven by two vertical motors to drill holes; the device also comprises a cement slurry supply system, wherein the cement slurry supply system pours cement slurry into the foundation to be reinforced through the double-shaft drill rod; the device also comprises an air supply system, wherein the air supply system infuses high-pressure air into the foundation to be reinforced through the double-shaft drill rod. The construction method for reinforcing the foundation by the single-machine double-shaft rotary jet pile disclosed by the invention adopts the single-machine double-shaft rotary jet pile machine for construction, so that the construction efficiency is greatly improved.
Description
Technical Field
The invention relates to the field of foundation stabilization methods, in particular to a construction method for reinforcing a foundation by using a single-machine double-shaft jet grouting pile.
Background
In the process of adopting the high-pressure jet grouting pile to reinforce the foundation, the roller-type jet grouting pile machine which is low in crawler type and is used for jet grouting pile machine and appears in the later stage is constructed in the prior art, and the following problems can be generated through the two construction modes:
1) the crawler-type low-frame jet grouting pile machine is adopted: the crawler-type low-frame rotary jet pile machine has limited construction depth, and needs to continuously drill through the orifice connecting rod after drilling for a certain depth every time, so that the construction process is discontinuous and the work efficiency is slow when the crawler-type low-frame rotary jet pile machine is constructed, and in addition, the problem of drill clamping also often occurs when the crawler-type low-frame rotary jet pile machine is constructed;
2) adopt drum-type to spout stake machine soon and construct: compared with a crawler-type low-frame rotary jet pile machine, the drum-type rotary jet pile machine can form piles at one time, and the problems of discontinuous construction, low work efficiency, drill jamming and the like caused by the adoption of the crawler-type low-frame rotary jet pile machine are solved. However what stake machine adopted is spouted soon to drum-type is that single drilling rod is under construction, when meetting the great or the tight condition of time limit for a project volume, it spouts the stake machine soon to need drop into drum-type in a large number and be under construction, this condition and power consumption water etc. to the place all have very big requirement, bring inconvenience for the construction, spout the construction of stake machine soon in order to guarantee many drum-types simultaneously, need add and send more staff to operate, this cost that can greatly increased labour undoubtedly, and the cement mixing system that stake machine was spouted soon to many drum-types uses and also can bring the influence to engineering environmental protection.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to solve the technical problem of providing a construction method for reinforcing a foundation by using a single-machine double-shaft jet grouting pile machine, which adopts the single-machine double-shaft jet grouting pile machine to replace a crawler-type low-frame jet grouting pile machine and a drum-type jet grouting pile machine in the prior art, and simultaneously reinforces two pile foundations by using one machine, thereby doubling the construction efficiency and being suitable for the construction conditions with larger engineering quantity or tight construction period.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a construction method for reinforcing a foundation by a single-machine double-shaft jet grouting pile, which comprises a single-machine double-shaft jet grouting pile machine, wherein the single-machine double-shaft jet grouting pile machine comprises a pile machine platform, an operation chamber for controlling the jet grouting pile machine to work is arranged on the pile machine platform, the bottom of the pile machine platform moves on a steel track through two rows of steel rollers, the construction method also comprises a double-shaft drill rod, and the single-machine double-shaft jet grouting pile machine synchronously drives the double-shaft drill rod to drill through two vertical motors; the high-pressure grouting pump is connected with the double-shaft drill rod through two grouting pipes to inject cement slurry into the foundation to be reinforced; still include air supply system, air supply system adopts one the air compressor machine is connected through two gas-supply pipes the biax drilling rod stirs to pouring into high-pressure air in waiting to consolidate the ground in step.
The construction steps are as follows:
s1, installing a single-machine double-shaft rotary jet pile machine: the method comprises the following steps that two vertical motors are arranged on a fixed frame according to design requirements, a double-shaft drill rod is fixedly connected with the two vertical motors through flange plates respectively, namely, the distance between the double-shaft drill rods is fixed, the fixed frame is positioned and arranged on a tower frame through a clamping groove, the fixed frame is connected with a winch through a steel wire rope, and the steel wire rope penetrates through a balance pulley at the top of the tower frame and a fixed pulley on a pile machine platform to form a pulley block;
s2, measuring, paying off and excavating a groove of the foundation stabilization area;
s3, leveling the single-machine double-shaft rotary jet pile machine;
s4, controlling a double-shaft drill rod to realize synchronous drilling sinking through two vertical motors on the pile machine;
s5, after the pile is drilled to the designed pile bottom elevation, a high-pressure pump in a cement slurry supply system controls cement slurry to synchronously grout into the drilled hole through a grouting pipe connected with a double-shaft drill rod, meanwhile, a hollow press in an air supply system is connected with the double-shaft drill rod through an air pipe to convey compressed air into the drilled hole, two vertical motors in a single-machine double-shaft rotary jet pile machine drive the double-shaft drill rod to rotate, and after the work lasts for one minute, a winch is operated to drive the double-shaft drill rod to synchronously rotate and lift according to the lifting speed required by the design;
and S6, performing the matching operation among the single-machine double-shaft rotary jet pile machine, the cement paste supply system and the air supply system by the staff through the interphone.
Preferably, the cement slurry supply system includes a cement silo for temporarily storing cement used in the construction process; the cement tank is characterized by also comprising a stirring pool, wherein the cement in the cement tank is conveyed to the stirring pool through a conveying belt to be stirred; the cement paste storage pool is formed by excavating on the ground surface by an excavator, and the cement paste in the stirring pool is transported to the cement paste storage pool through a pipeline; the high-pressure pumps extend into the cement paste storage pool through pipelines, and are used for conveying the cement paste in the cement paste storage pool to the double-shaft drill rod through the grouting pipe after being pressurized and synchronously pouring the cement paste into a drill hole through the double-shaft drill rod; the high-pressure pump power box is used for providing power for the high-pressure pump during working; still include the rainshelter, the rainshelter is used for sheltering from equipment, prevents that it from getting into the rainwater and causing equipment short circuit and grout to dilute.
Preferably, the air supply system comprises an air compressor, and the air compressor is used for producing required compressed air; the air compressor further comprises an air conveying pipe, and the air conveying pipe is used for conveying compressed air generated by the air compressor.
The invention has the beneficial effects that:
adopt the unit biax to spout the stake machine soon, realize biax drilling rod simultaneous movement, spout the stake machine soon through one and can realize two pile foundations and consolidate simultaneously, compare in the low stake machine of spouting soon of spouting of crawler-type and spout stake machine soon with the drum-type, efficiency of construction improves to original one time, is applicable to the great or the tight construction conditions of time limit for a project of engineering volume.
Drawings
FIG. 1 is a schematic structural diagram of a construction method for reinforcing a foundation by using a single-machine double-shaft jet grouting pile according to an embodiment of the present invention;
fig. 2 is a structural side view of a motor double-shaft jet grouting pile machine in a construction method for reinforcing a foundation by a single-machine double-shaft jet grouting pile according to an embodiment of the present invention.
In the figure:
1. a cement silo; 2. a stirring tank; 3. a cement slurry storage pool; 4. a high pressure pump; 5. a high pressure pump power box; 6. a rain shelter; 7. a grouting pipe; 8. a double-shaft drill rod; 9. a vertical motor; 10. a fixed mount; 11. a wire rope; 12. a balance pulley; 13. a tower; 14. steel pipe diagonal bracing; 15. a gas delivery pipe; 16. an air compressor; 17. a winch; 18. a motor control box; 19. a pile machine platform; 20. a steel drum; 21. a steel rail; 22. and an operation chamber.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Examples
As shown in fig. 1 and fig. 2, in the construction method for reinforcing a foundation by using a single-machine dual-shaft jet grouting pile provided in this embodiment, the single-machine dual-shaft jet grouting pile machine includes a pile machine platform 19, an operation chamber 22 for controlling the single-machine dual-shaft jet grouting pile machine to work is arranged on the pile machine platform 19, the bottom of the pile machine platform 19 moves on a steel rail 21 through two rows of steel rollers 20, and further includes a dual-shaft drill rod 8, the single-machine dual-shaft jet grouting pile machine synchronously drives the dual-shaft drill rod 8 to drill through two vertical motors 9, and the two vertical motors 9 are controlled by a motor control box 18 in the operation chamber 22; the device also comprises a cement slurry supply system, wherein the cement slurry supply system pours cement slurry into the foundation to be reinforced through the double-shaft drill rod 8; the device also comprises an air supply system, wherein the air supply system infuses high-pressure air into the foundation to be reinforced through the double-shaft drill rod 8;
the construction steps are as follows:
s1, installing a single-machine double-shaft rotary jet pile machine: the method comprises the following steps that two vertical motors 9 are arranged on a fixed frame 10, a double-shaft drill rod 8 is fixedly connected with the two vertical motors 9 through flange plates respectively, the distance between the double-shaft drill rods 8 is fixed, the fixed frame 10 is positioned and arranged on a tower frame 13 through a clamping groove, a steel pipe inclined strut 14 used for improving the structural strength of the tower frame 13 is arranged on the side edge of the tower frame 13, the fixed frame 10 is connected with a winch 17 through a steel wire rope 11, and the steel wire rope 11 penetrates through a balance pulley 12 positioned at the top of the tower frame 13 and a fixed pulley positioned;
s2, measuring, paying off and excavating a groove of the foundation stabilization area;
s3, leveling the single-machine double-shaft rotary jet pile machine;
s4, controlling the double-shaft drill rod 8 to realize synchronous drilling sinking through two vertical motors 9 on the pile machine;
s5, after the pile is drilled to the designed pile bottom elevation, a high-pressure pump 4 in a cement paste supply system controls cement paste to be connected with a double-shaft drill rod 8 through a grouting pipe 7 to carry out synchronous grouting in the drilled hole, meanwhile, a hollow press 16 in an air supply system is connected with the double-shaft drill rod 8 through an air pipe 15 to convey compressed air into the drilled hole, two vertical motors 9 in a single double-shaft rotary jet pile machine drive the double-shaft drill rod 8 to rotate, and after the work lasts for one minute, a winch 17 is operated to drive the double-shaft drill rod 8 to synchronously rotate and lift according to the lifting speed required by the design;
and S6, performing the matching operation among the single-machine double-shaft rotary jet pile machine, the cement paste supply system and the air supply system by the staff through the interphone.
Through adopting the unit biax to spout the stake machine soon, realize the simultaneous movement of biax drilling rod 8, spout a machine through a soon and can realize two pile foundations and consolidate simultaneously, compare in the low stake machine of spouting soon of spouting of crawler-type and spout stake machine soon with the drum-type, efficiency of construction improves to original one time, is applicable to the great or the tight construction conditions of time limit for a project volume.
In order to manufacture and transport the cement paste required for pile foundation reinforcement, further, the cement paste supply system comprises a cement tank 1, wherein the cement tank 1 is used for temporarily storing the cement used in the construction process; the cement mixing device also comprises a mixing tank 2, and cement in the cement tank 1 is conveyed into the mixing tank 2 through a conveying belt to be mixed; the cement paste storage pool 3 is formed by excavating on the ground surface by an excavator, and the cement paste in the stirring pool 2 is transported into the cement paste storage pool 3 through a pipeline; the device comprises a cement slurry storage tank 3, and is characterized by further comprising 2 high-pressure pumps 4, wherein the high-pressure pumps 4 extend into the cement slurry storage tank 3 through pipelines, the high-pressure pumps 4 are used for conveying cement slurry in the cement slurry storage tank 3 to a double-shaft drill rod 8 after pressurization, and the cement slurry is poured into a drilled hole through the double-shaft drill rod 8; the high-pressure pump power box 5 is used for providing power for the high-pressure pump 4 when working; still include rainshelter 6, rainshelter 6 is used for sheltering from equipment, prevents that it from getting into the rainwater and causing equipment short circuit and grout to dilute.
In order to manufacture and transport compressed air required by pile foundation reinforcement, the air supply system comprises an air compressor 16, and the air compressor 16 manufactures the required compressed air; the air conveying pipe 15 is further included, and the air conveying pipe 15 is used for conveying compressed air generated by the air compressor 16.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (3)
1. A construction method for reinforcing a foundation by using a single-machine double-shaft jet grouting pile is characterized by comprising the following steps:
the single-machine double-shaft rotary jet pile machine comprises a pile machine platform, wherein an operation chamber for controlling the single-machine double-shaft rotary jet pile machine to work is arranged on the pile machine platform, the bottom of the pile machine platform moves on the steel track through the two rows of steel rollers, and the single-machine double-shaft rotary jet pile machine further comprises a double-shaft drill rod, and the double-shaft drill rod is synchronously driven by the two vertical motors to drill;
the cement slurry supply system adopts two high-pressure grouting pumps to synchronously connect the double-shaft drill rod through two grouting pipes to inject cement slurry into the foundation to be reinforced;
the air supply system adopts one air compressor to connect the double-shaft drill rod through two air pipes to synchronously infuse high-pressure air into the foundation to be reinforced for stirring;
the construction steps are as follows:
s1, installing a single-machine double-shaft rotary jet pile machine: the method comprises the following steps that two vertical motors are arranged on a fixed frame according to design requirements, a double-shaft drill rod is fixedly connected with the two vertical motors through flange plates respectively, namely, the distance between the double-shaft drill rods is fixed, the fixed frame is positioned and arranged on a tower frame through a clamping groove, the fixed frame is connected with a winch through a steel wire rope, and the steel wire rope penetrates through a balance pulley at the top of the tower frame and a fixed pulley on a pile machine platform to form a pulley block;
s2, measuring, paying off and excavating a groove of the foundation stabilization area;
s3, leveling the single-machine double-shaft rotary jet pile machine;
s4, controlling a double-shaft drill rod to realize synchronous drilling sinking through two vertical motors on the pile machine;
s5, after the pile is drilled to the designed pile bottom elevation, a high-pressure pump in a cement slurry supply system controls cement slurry to synchronously grout into the drilled hole through a grouting pipe connected with a double-shaft drill rod, meanwhile, a hollow press in an air supply system is connected with the double-shaft drill rod through an air pipe to convey compressed air into the drilled hole, two vertical motors in a single-machine double-shaft rotary jet pile machine drive the double-shaft drill rod to rotate, and after the work lasts for one minute, a winch is operated to drive the double-shaft drill rod to synchronously rotate and lift according to the lifting speed required by the design;
and S6, performing the matching operation among the single-machine double-shaft rotary jet pile machine, the cement paste supply system and the air supply system by the staff through the interphone.
2. The construction method for reinforcing the foundation by the stand-alone biaxial jet grouting pile according to claim 1, wherein the cement paste supply system comprises:
a cement silo for temporarily storing cement used in a construction process;
the cement in the cement tank is conveyed into the stirring pool through a conveying belt to be stirred;
the cement slurry storage pool is formed by excavating on the ground surface by an excavator, and the cement slurry in the stirring pool is transported into the cement slurry storage pool through a pipeline;
the high-pressure pumps extend into the cement paste storage pool through pipelines, and are used for conveying the cement paste in the cement paste storage pool to the double-shaft drill rod through the grouting pipe after being pressurized and synchronously pouring the cement paste into a drill hole through the double-shaft drill rod;
the high-pressure pump power box is used for providing power for the high-pressure pump during working;
the rain shelter is used for sheltering the equipment and preventing the equipment from entering rainwater to cause short circuit of the equipment and dilution of cement paste.
3. The construction method for reinforcing the foundation by the stand-alone biaxial jet grouting pile according to claim 1, wherein the gas supply system comprises:
an air compressor that produces the required compressed air;
and the air conveying pipe is used for conveying compressed air generated by the air compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010704932.XA CN111794219A (en) | 2020-07-21 | 2020-07-21 | Construction method for reinforcing foundation by single-machine double-shaft jet grouting pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010704932.XA CN111794219A (en) | 2020-07-21 | 2020-07-21 | Construction method for reinforcing foundation by single-machine double-shaft jet grouting pile |
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| CN111794219A true CN111794219A (en) | 2020-10-20 |
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| CN202010704932.XA Pending CN111794219A (en) | 2020-07-21 | 2020-07-21 | Construction method for reinforcing foundation by single-machine double-shaft jet grouting pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113373930A (en) * | 2021-05-02 | 2021-09-10 | 刘明杰 | Pre-buried type biliquid slip casting plugging device of foundation ditch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2561820Y (en) * | 2002-08-09 | 2003-07-23 | 青岛市勘察测绘研究院 | Steel bar reinforced section-varied composite pile operation apparatus |
| CN104018493A (en) * | 2014-06-20 | 2014-09-03 | 宁波鸿晨建设有限公司 | Double-shaft air-injection rotary jet type stirring pile machine and method for forming pile by using pile machine |
| CN207959196U (en) * | 2017-12-21 | 2018-10-12 | 泛华建设集团有限公司 | A kind of three axis high pressure spray of long spire stirs device |
| CN210238494U (en) * | 2019-06-12 | 2020-04-03 | 天津市博川岩土工程有限公司 | Supplementary booster-type building biax stirring stake machine |
-
2020
- 2020-07-21 CN CN202010704932.XA patent/CN111794219A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2561820Y (en) * | 2002-08-09 | 2003-07-23 | 青岛市勘察测绘研究院 | Steel bar reinforced section-varied composite pile operation apparatus |
| CN104018493A (en) * | 2014-06-20 | 2014-09-03 | 宁波鸿晨建设有限公司 | Double-shaft air-injection rotary jet type stirring pile machine and method for forming pile by using pile machine |
| CN207959196U (en) * | 2017-12-21 | 2018-10-12 | 泛华建设集团有限公司 | A kind of three axis high pressure spray of long spire stirs device |
| CN210238494U (en) * | 2019-06-12 | 2020-04-03 | 天津市博川岩土工程有限公司 | Supplementary booster-type building biax stirring stake machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113373930A (en) * | 2021-05-02 | 2021-09-10 | 刘明杰 | Pre-buried type biliquid slip casting plugging device of foundation ditch |
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Application publication date: 20201020 |