CN113668519A - Internal and external tooth opposite stirring type single-shaft stirring pile machine and construction method thereof - Google Patents
Internal and external tooth opposite stirring type single-shaft stirring pile machine and construction method thereof Download PDFInfo
- Publication number
- CN113668519A CN113668519A CN202111056854.8A CN202111056854A CN113668519A CN 113668519 A CN113668519 A CN 113668519A CN 202111056854 A CN202111056854 A CN 202111056854A CN 113668519 A CN113668519 A CN 113668519A
- Authority
- CN
- China
- Prior art keywords
- stirring
- teeth
- drill rod
- frame
- pile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003756 stirring Methods 0.000 title claims abstract description 183
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 239000002689 soil Substances 0.000 claims abstract description 56
- 239000002002 slurry Substances 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000011440 grout Substances 0.000 claims description 20
- 238000005507 spraying Methods 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 6
- 238000005728 strengthening Methods 0.000 claims description 6
- 239000011229 interlayer Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000004537 pulping Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 208000014617 hemorrhoid Diseases 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000002457 bidirectional effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The single-shaft stirring pile machine consists of a power device, a slurry conveying pipe, a drill rod, stirring teeth, a stirring frame and a drill bit, wherein the stirring teeth are divided into inner stirring teeth and outer stirring teeth; the inner stirring teeth are arranged at the lower part of the drill rod; the outer stirring teeth are arranged on the stirring frame; the upper end and the lower end of the stirring frame are sleeved on the drill rod by utilizing a shaft sleeve, and the outer cover is covered on the stirring teeth of the drill rod; the inner stirring teeth and the outer stirring teeth are meshed with each other and generate relative motion, so that the state of the inner stirring teeth and the outer stirring teeth on stirring the crushed soil body is maintained. The method has the characteristics of environmental protection, safety and reliability, can improve the pile forming quality of peripheral piles of the single-shaft stirring pile and the stiff composite pile, eliminates the difficulties of uneven pile forming and no pile forming of the stirring pile in a mucky soil layer, improves the construction efficiency, and has great economic value and social benefit.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a machine tool for treating and reinforcing a soft foundation and a rapid construction method.
Background
A plurality of problems exist in the construction of the current single-shaft mixing pile, and mainly comprise the following steps: 1. the stirring blades rotate to drive the soil body to move along the rotating direction of the blades, the soil body is extruded outwards all around, the extruded soil body moves towards the hole after the blades pass, relative cutting and crushing processes do not exist between the blades and the soil body, and the soil body is extruded to form soil blocks; soil bodies are filled between the stirring blades, and no other blades are used for cutting and crushing the soil bodies in the rotating and up-and-down moving processes, so that a large amount of undisturbed soil bodies still exist after the stirring blades pass; 2. soil bodies are filled among the stirring blades, the stirring blades are wrapped by the clay, the rock-soil bodies cannot be effectively crushed, and the outward extrusion and disturbance of the stirring blades are very obvious; 3. when the stirring shaft is lifted, the sprayed curing agent slurry flows along gaps between the stirring shaft and the outer sides of the blades, and a large amount of curing agent slurry injected into the holes is lost; 4. when the traditional single-shaft stirring pile machine is only lifted up, bottom guniting is carried out, and slurry flows between soil blocks and the outer sides of stirring blades, so that the slurry is not fully mixed with soil, and the phenomena of uneven pile body, slurry shortage at the pile end and the like are formed; 5. the control randomness of the construction parameters of the traditional single-shaft mixing pile is large, the problems of slurry breaking, over-fast drilling and lifting, rotating stall and the like often occur, the pile forming quality is poor, the pile body of the mixing pile is incomplete, and the strength is low; 6. traditional unipolar stirring stake pilot hole stirring, the rigidity of drilling tool is low, leads to the stirring stake straightness relatively poor that hangs down that forms.
However, the single-shaft mixing pile has many advantages in a construction method for reinforcing a soft foundation, such as flexible construction process, convenient pile diameter adjustment, low construction cost, no high requirement on a construction site and the like. Therefore, the engineering industry urgently needs to improve and innovate the traditional single-shaft stirring pile machine and construct a stirring pile body with qualified quality.
Disclosure of Invention
The invention aims to solve the technical problems that the existing single-shaft mixing pile machine cannot sufficiently mix and crush foundation soil, a large number of soil blocks are formed, the mixing with cement paste is not uniform, the pile body quality of the formed mixing pile is poor, the strength is low and the like, and provides an innovative mixing pile machine with bidirectional cutting and internal and external tooth pair mixing and a construction method thereof.
In order to achieve the purpose, the technical scheme adopted by the patent is as follows:
the inner and outer tooth opposite stirring type single-shaft stirring pile machine consists of a power device, a slurry conveying pipe, a drill rod, stirring teeth, a stirring frame and a drill bit;
the inner stirring teeth are arranged at the lower part of the drill rod; the outer stirring teeth are arranged on the stirring frame;
the upper end and the lower end of the stirring frame are sleeved on the drill rod by utilizing shaft sleeves, and the stirring teeth (inner stirring teeth) of the drill rod are covered by the stirring frame; the inner stirring teeth and the outer stirring teeth are meshed with each other and generate relative motion, so that the state of the inner stirring teeth and the outer stirring teeth on stirring the crushed soil body is maintained.
The stirring frame consists of more than 2 rectangular frames with openings, each rectangular frame with openings consists of an upper transverse plate, a lower transverse plate, a vertical plate and an outer stirring tooth, and the upper transverse plate and the lower transverse plate fix two ends of the vertical plate and are connected with a shaft sleeve on the drill rod; the multiple layers of external stirring teeth are arranged on the inner side of the vertical plate and are orthogonal to the vertical plate;
the stirring frame is arranged on the drill bit, and the drill bit rotates to extrude broken soil to cover the frame and is repeatedly broken.
The upper transverse plate and the lower transverse plate are vertically arranged and cut into the soil body in a blade shape so as to reduce the resistance of the stirring frame inserted into the soil body;
the stirring teeth are blade-shaped and are obliquely crossed on the middle axial surface of the drill rod; more than 3 layers of stirring teeth are distributed along the axial direction of the drill rod at certain intervals, more than 2 stirring teeth are arranged on each layer, and the stirring teeth are arranged at equal intervals along the periphery of the drill rod.
Limiting rings are arranged above and below the shaft sleeve to limit the stirring frame to move on the drill rod.
The drill rod is hollow, two slurry feeding pipes are arranged in an inner cavity, and one slurry feeding pipe is connected with a lower slurry spraying nozzle below the stirring frame; the other slurry feeding pipe is connected with an upper slurry spraying nozzle at the top of the stirring frame.
The construction method of the internal and external tooth opposite stirring type single-shaft stirring pile comprises the following specific steps:
the first step is as follows: the pulping system and the single-shaft stirrer move in place; setting of coordinates, verticality and construction parameters of the mixing pile is corrected by using a pile machine control system;
the second step is that: the power device drives the drill rod to drive the drill bit to rotate and drill downwards, meanwhile, axial force is applied to press the drill bit into the stratum, and the drill bit rotates and extrudes to enable soil to enter the stirring frame; the stirring frame is inserted into the stratum under the action of the axial force of the drill rod; at the moment, the resistance of the stratum limits the stirring frame to rotate and generates relative motion with the drill rod, so that the inner stirring teeth of the drill rod and the outer stirring teeth on the stirring frame generate opposite stirring, and soil entering the stirring frame is repeatedly crushed. The soil body entering the stirring frame is extruded outwards from the hole wall due to the lateral limit of the vertical plate of the stirring frame and can only be continuously cut and crushed by the stirring teeth;
the third step: when the drill rod is lifted from the bottom of the drill hole, the upper grout spraying nozzle is opened, grout is sprayed into the crushed soil particles and is fully mixed in the stirring frame, when the upper part of the pile end holding layer is reached, the drill rod stops lifting and is converted into a lower drill, the lower grout spraying nozzle is opened, the grout is sprayed into the crushed soil particles again, and the crushed soil particles are fully crushed and mixed in the stirring frame again;
the fourth step: when the drill rod reaches the bottom of the pile and is lifted again, the upper grout spraying nozzle is opened, grout is sprayed into the broken soil particles again, and the grout is fully mixed in the stirring frame by the stirring teeth which follow the upper grout spraying nozzle, so that the pile end with higher strength and positioned at the position of the bearing stratum is formed. Meanwhile, the cutting uniformity of the soil body and the mixing uniformity of the soil body and the cement paste are improved; similarly, for weak interlayers and strata needing strengthening and strengthening, the method can be realized by increasing the amount of the slurry and the cutting and crushing times of the strata.
Has the advantages that: the invention can solve the difficult problem of single-shaft stirring pile reinforcement of soft foundation, and eliminates the dilemma that the single-shaft stirring pile is not sufficient in cutting broken soil body and is not uniformly mixed with slurry through the developed internal and external stirring tooth pair stirring and cutting type machine. The device realizes the mixing and bidirectional cutting of the single-shaft mixing pile, and has great economic and social values for improving the quality and the safety of foundation engineering.
Drawings
The invention is further described with reference to the following figures and detailed description.
FIG. 1 is a schematic diagram of a three-dimensional structure of an internal and external stirring tooth-to-stirring type stirring device.
FIG. 2 is a schematic view of an open rectangular frame.
FIG. 3 is a schematic plan view of the structure of the stirring frame.
Fig. 4 is a schematic view of a shaft sleeve and a limiting structure.
In the figure: the device comprises a drill rod 1, a drill bit 2, an inner stirring tooth 3, an outer stirring tooth 4, a slurry conveying pipe 5, a stirring frame 6, an opening rectangular frame 7, a transverse plate 8, a vertical plate 9, an upper slurry spraying nozzle 10, a lower slurry spraying nozzle 11, a shaft sleeve 12 and a limiting ring 13.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.
The invention relates to an internal and external tooth opposite stirring type single-shaft stirring pile machine, which consists of a power device, a slurry conveying pipe 5, a drill rod 1, internal stirring teeth 3, external stirring teeth 4, a stirring frame 6 and a drill bit 2, and is shown in figure 1.
As can be seen from fig. 1, the inner rabble teeth 3 are arranged at the lower part of the drill rod 1; the outer stirring teeth 4 are arranged on the stirring frame 6;
as can be seen from fig. 2, the upper end and the lower end of the stirring frame 6 are sleeved on the drill rod 1 by using shaft sleeves 12, and the stirring teeth (inner stirring teeth 3) of the drill rod are covered outside; the inner stirring teeth 3 and the outer stirring teeth 4 are meshed with each other and generate relative movement, and the state of crushing soil bodies for stirring is maintained, as shown in figure 3.
The stirring frame 6 consists of more than 2 rectangular frames 7 with openings, each rectangular frame 7 with openings consists of an upper transverse plate 8, a lower transverse plate 8, a vertical plate 9 and an outer stirring tooth 4, and the upper transverse plate 8 and the lower transverse plate 8 fix two ends of the vertical plate 9 and are connected with a shaft sleeve on the drill rod 1; the multi-layer external stirring teeth 4 are arranged on the inner side of the vertical plate 9 and are orthogonal to the vertical plate 9;
the upper transverse plate 9 and the lower transverse plate 9 are vertically arranged and cut into the soil body in a blade shape so as to reduce the resistance of the stirring frame 6 inserted into the soil body;
as can be seen from fig. 3 and 4, the upper and lower parts of the shaft sleeve 12 are provided with limit rings 13 to limit the movement of the stirring frame 6 on the drill rod 1.
As can be seen from figure 1, the drill rod 1 is hollow, two slurry feeding pipes 5 are arranged in the inner cavity, and one slurry feeding pipe is connected with a lower slurry spraying nozzle 11 below a stirring frame 6; the other slurry feeding pipe is connected with an upper slurry spraying nozzle 10 at the top of the stirring frame.
The complete construction process of the single-shaft bidirectional cutting forced uniform mixing pile is as follows:
according to the figure 1, a power device drives a drill rod 1 to drive a drill bit 2 to rotate and drill downwards, meanwhile, axial force is applied to press the drill bit 2 into the stratum, and the drill bit 2 rotates and extrudes soil to enable the soil to enter a stirring frame 6; the stirring frame 6 is inserted into the stratum under the action of the axial force of the drill rod 1; at the moment, the resistance of the stratum limits the stirring frame 6 to rotate and generate relative motion with the drill rod 1, so that the inner stirring teeth 3 of the drill rod 1 and the outer stirring teeth 4 on the stirring frame 6 generate opposite stirring, and soil entering the stirring frame 6 is repeatedly crushed. The soil body entering the stirring frame 6 is extruded outwards from the hole wall due to the side limit of the vertical plate 9 in the stirring frame 6, and can only be continuously cut and crushed by the stirring teeth;
when the drill rod 1 is lifted from the bottom of the drill hole, the upper grout spraying nozzle 10 is opened, grout is sprayed into the broken soil particles and is fully mixed in the stirring frame 6, when the upper part of the pile end bearing layer is reached, the drill rod 1 stops lifting and is converted into a lower drill, the lower grout spraying nozzle 11 is opened, the grout is sprayed into the broken soil particles again, and the broken soil particles are fully broken and mixed in the stirring frame 6 again;
when the drill rod 1 reaches the bottom of the pile and is lifted again, the upper grout spraying nozzle 10 is opened, grout is sprayed into the broken soil particles again, and the grout is fully mixed in the stirring frame 6 by the stirring teeth which follow the upper grout spraying nozzle, so that a pile end with higher strength and positioned at the position of the bearing stratum is formed. Meanwhile, the cutting uniformity of the soil body and the mixing uniformity of the soil body and the cement paste are improved; similarly, for weak interlayers and strata needing strengthening and strengthening, the method can be realized by increasing the amount of the slurry and the cutting and crushing times of the strata.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A single-shaft stirring pile machine with opposite stirring of inner and outer teeth and a construction method thereof are disclosed, the single-shaft stirring pile machine consists of a power device, a slurry conveying pipe, a drill rod, stirring teeth, a stirring frame and a drill bit, and is characterized in that the stirring teeth are divided into inner stirring teeth and outer stirring teeth; the inner stirring teeth are arranged at the lower part of the drill rod; the outer stirring teeth are arranged on the stirring frame; the upper end and the lower end of the stirring frame are sleeved on the drill rod by utilizing a shaft sleeve, and the outer cover is covered on the stirring teeth of the drill rod; the inner stirring teeth and the outer stirring teeth are meshed with each other and generate relative motion, so that the state of the inner stirring teeth and the outer stirring teeth on stirring the crushed soil body is maintained.
2. The single-shaft stirring pile machine with the internal and external teeth oppositely stirring and the construction method thereof as claimed in claim 1, wherein the stirring teeth are blade-shaped and are obliquely crossed with the central axial surface of the drill rod.
3. The single-shaft stirring pile machine with the internal and external teeth oppositely stirring and the construction method thereof as claimed in claim 1, wherein more than 3 layers of stirring teeth are distributed along the axial direction of the drill rod at certain intervals, more than 2 stirring teeth are arranged on each layer, and the stirring teeth are arranged at equal intervals along the periphery of the drill rod.
4. The internal and external tooth opposite stirring type single-shaft mixing pile machine and the construction method thereof according to claim 1, characterized in that the mixing frame is composed of more than 2 rectangular frames with openings, the rectangular frames with openings are composed of upper and lower transverse plates, a vertical plate and external mixing teeth, the upper and lower transverse plates fix both ends of the vertical plate and then are connected with a shaft sleeve on the drill rod; the multiple layers of external stirring teeth are arranged on the inner side of the vertical plate and are orthogonal to the vertical plate.
5. The single-shaft stirring pile machine with the internal and external teeth oppositely stirring function and the construction method thereof as claimed in claim 1, wherein the upper and lower transverse plates of the open rectangular frame are vertically arranged and cut into the soil body in a blade shape.
6. The internal and external tooth opposite stirring type single-shaft stirring pile machine and the construction method thereof as claimed in claim 1, wherein limiting rings are arranged above and below the shaft sleeve to limit the movement of the stirring frame on the drill rod.
7. The inner and outer teeth oppositely stirring type single-shaft stirring pile machine and the construction method thereof as claimed in claim 1, wherein the stirring frame is arranged above the drill bit, and the soil body crushed by the rotary extrusion of the drill bit is covered in the frame and is repeatedly crushed.
8. The internal and external tooth opposite stirring type single-shaft mixing pile machine and the construction method thereof as claimed in claim 1, wherein two slurry feeding pipes are arranged in the inner cavity of the hollow drill rod, and one slurry feeding pipe is connected with a bottom slurry spraying nozzle below the mixing frame; the other slurry feeding pipe is connected with a top slurry spraying nozzle at the top of the stirring frame.
9. A construction method of an internal and external tooth opposite stirring type single-shaft stirring pile is characterized by comprising the following specific steps:
the first step is as follows: the pulping system and the single-shaft stirrer move in place; setting of coordinates, verticality and construction parameters of the mixing pile is corrected by using a pile machine control system;
the second step is that: the power device drives the drill rod to drive the drill bit to rotate and drill downwards, meanwhile, axial force is applied to press the drill bit into the stratum, and the drill bit rotates and extrudes to enable soil to enter the stirring frame; the stirring frame is inserted into the stratum under the action of the axial force of the drill rod; at the moment, the resistance of the stratum limits the stirring frame to rotate and generates relative motion with the drill rod, so that the inner stirring teeth of the drill rod and the outer stirring teeth on the stirring frame generate opposite stirring, and soil entering the stirring frame is repeatedly crushed. The soil body entering the stirring frame is extruded outwards from the hole wall due to the lateral limit of the vertical plate of the stirring frame and can only be continuously cut and crushed by the stirring teeth;
the third step: when the pile end is lifted from the bottom of the drill hole, a lower slurry spraying nozzle is opened, cement slurry is sprayed into the crushed soil particles and is fully mixed in a stirring frame, when the pile end is lifted to the upper part of a pile end holding layer, a drill rod stops lifting and is converted into a lower drill, the lower slurry spraying nozzle is opened, the cement slurry is sprayed into the crushed soil particles again, and the crushed soil particles are fully crushed and mixed in the stirring frame again;
the fourth step: when the drill rod reaches the bottom of the pile and is lifted again, the upper grout spraying nozzle is opened, grout is sprayed into the broken soil particles again, and the grout is fully mixed in the stirring frame by the stirring teeth which follow the upper grout spraying nozzle, so that the pile end with higher strength and positioned at the position of the bearing stratum is formed. Meanwhile, the cutting uniformity of the soil body and the mixing uniformity of the soil body and the cement paste are improved; similarly, for weak interlayers and strata needing strengthening and strengthening, the method can be realized by increasing the amount of the slurry and the cutting and crushing times of the strata.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111056854.8A CN113668519A (en) | 2021-09-09 | 2021-09-09 | Internal and external tooth opposite stirring type single-shaft stirring pile machine and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111056854.8A CN113668519A (en) | 2021-09-09 | 2021-09-09 | Internal and external tooth opposite stirring type single-shaft stirring pile machine and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113668519A true CN113668519A (en) | 2021-11-19 |
Family
ID=78549192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111056854.8A Pending CN113668519A (en) | 2021-09-09 | 2021-09-09 | Internal and external tooth opposite stirring type single-shaft stirring pile machine and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113668519A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232616A (en) * | 2021-12-14 | 2022-03-25 | 上海强劲地基工程股份有限公司 | Single-shaft stirring pile construction equipment with cutting stirring frame |
| CN118360939A (en) * | 2024-06-19 | 2024-07-19 | 四川坤德智联科技有限公司 | Multi-shaft multi-layer shearing stirring drilling tool for stirring continuous wall construction and use method |
-
2021
- 2021-09-09 CN CN202111056854.8A patent/CN113668519A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232616A (en) * | 2021-12-14 | 2022-03-25 | 上海强劲地基工程股份有限公司 | Single-shaft stirring pile construction equipment with cutting stirring frame |
| CN118360939A (en) * | 2024-06-19 | 2024-07-19 | 四川坤德智联科技有限公司 | Multi-shaft multi-layer shearing stirring drilling tool for stirring continuous wall construction and use method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113668519A (en) | Internal and external tooth opposite stirring type single-shaft stirring pile machine and construction method thereof | |
| CN105649069A (en) | V-shaped locking and buckling device for inverted-Y-shaped piles and hexagonal piles | |
| CN102808408B (en) | Bidirectional reducing stirring pile machine and pile formation construction method thereof | |
| CN105019422A (en) | Foundation construction method for local solidification of topsoil and composite pile bearing | |
| CN201137093Y (en) | Forced type bidirectional cement-treated soil agitation pile head | |
| CN106284328A (en) | Energy-conservation strength self-reaction force multidirectional cement mixing method drilling tool | |
| CN112627174A (en) | Single-shaft deep stirring pile drilling tool with inner and outer double-layer stirring teeth | |
| CN112963096A (en) | Single-shaft cement-soil mixing pile drill bit and construction method of cement mixing pile | |
| CN106400796A (en) | Mechanical equipment for manufacturing buckling combinational piles | |
| CN106400791A (en) | Mechanical equipment for manufacturing locking combinational herringbone piles | |
| CN106400792A (en) | Mechanical equipment for manufacturing buckling combinational T-shaped piles | |
| CN105604043A (en) | Equipment for wall forming by Y-shaped joint of regular octagonal piles and rectangular piles | |
| CN203200749U (en) | Recombination stirring drilling tool for repairing, strengthening and stabilizing foundation | |
| CN113463641B (en) | High-pressure grouting device and control method | |
| CN105604049A (en) | Equipment for cross-shaped insertion connection of regular octagonal piles and rectangular piles | |
| CN105604046A (en) | Equipment for T-shaped inserting and fastening of regular octagonal piles and rectangular piles | |
| CN105604050A (en) | Equipment for cross-shaped locking of regular octagonal piles and rectangular piles | |
| CN105604047A (en) | Equipment for T-shaped locking of regular octagonal piles and rectangular piles | |
| CN105604044A (en) | Device for wall forming by Y-shaped locking of regular octagonal piles and rectangular piles | |
| CN110777779A (en) | Offshore pile sinking construction method for concrete precast pile | |
| CN105586945A (en) | Manufacturing device for trapezoid locking Y-shaped piles | |
| CN105586963A (en) | Triangular pile and rectangular pile locking and buckling equipment | |
| CN206143764U (en) | Multidirectional cement mixing method drilling tool of energy -conserving powerful self -reaction force | |
| CN112627186A (en) | Novel secant pile and construction method thereof | |
| CN212835345U (en) | Cutting grouting stirring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20211119 |
|
| WD01 | Invention patent application deemed withdrawn after publication |