CN216551933U - Guide hole type static pile press with press-filling function - Google Patents
Guide hole type static pile press with press-filling function Download PDFInfo
- Publication number
- CN216551933U CN216551933U CN202122720099.0U CN202122720099U CN216551933U CN 216551933 U CN216551933 U CN 216551933U CN 202122720099 U CN202122720099 U CN 202122720099U CN 216551933 U CN216551933 U CN 216551933U
- Authority
- CN
- China
- Prior art keywords
- drill rod
- hole
- rod
- press
- drill
- 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.)
- Active
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a hole leading type static pile press with a press filling function, which comprises a static pile press and a hole leading device arranged on the static pile press, wherein the hole leading device is provided with a drill rod, and a guide pipe is arranged inside the drill rod. The hole-leading type static pile press with the press-filling function realizes pile pressing operation, hole-leading operation and press-filling operation on the same machine, can reduce the effective pile length, is environment-friendly and material-saving, reduces noise and quickens the construction period.
Description
Technical Field
The utility model relates to the technical field of pile foundation construction equipment, in particular to a guide hole type static pile press with a press-filling function.
Background
The PHC tubular pile (prestressed high-strength concrete tubular pile) has the characteristics of high strength, convenient and quick construction, high bearing capacity of a single pile and the like, is a common pile foundation in a high-rise building, and obviously improves the bearing capacity of a foundation with a field soil layer of loess powder soil, silt soil, gravel powder soil, silt soil and silty clay in the pile length range.
The hole leading type static pile press is a hole leading type static pile press which leads hole leading operation and pile pressing operation to be carried out synchronously and leads a precast pile to pass through a sand layer and enter a reliable bearing layer, and has the following problems: when the precast pile needs to penetrate through a sand geological interlayer (cohesive soil, silt, sandy soil, a pebble layer with the grain size not more than 60 mm and the thickness not more than 5 m (the content of pebbles is not more than 30%)), pile stagnation, pile deflection or pile breakage is easily caused, the requirement on construction quality cannot be met, and the construction efficiency is influenced; the opposite force layer is positioned in the region of the pebble layer, the effective pile length of the tubular pile is deeper or the tubular pile is underground in a boulder, the tubular pile is easy to incline or even break due to excessive pressure (added force), and the horizontal displacement and the fracture are caused by pile sinking and soil squeezing; these factors restrict the popularization and application of the precast pile.
Therefore, how to provide a guiding hole type static pile press with a press-filling function, which solves the above technical problems, is a technical problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a leading hole type static pile press with a press-grouting function, which realizes pile pressing operation, hole leading operation and press-grouting operation on the same machine, can reduce the effective pile length, is environment-friendly and material-saving, reduces noise and quickens the construction period.
In order to achieve the purpose, the utility model provides a hole guiding type static pile press with a press filling function, which comprises a static pile press and a hole guiding device arranged on the static pile press, wherein the hole guiding device is provided with a drill rod, and a guide pipe is arranged inside the drill rod.
Preferably, the draft tube comprises a dry powder draft tube for dry spraying the cement and a wet slurry draft tube for wet spraying the concrete.
Preferably, the drill rod consists of a plurality of rod sections and a drill rod head, and the flow guide pipe penetrates through all the rod sections and the drill rod head.
Preferably, the rod section comprises a polished rod section and an auger rod section provided with a helical blade on the outside, and the polished rod section, the auger rod section and the drill rod head are sequentially connected.
Preferably, joints for connection are arranged between the rod sections and the drill rod head, and the joints are axially fixed through pin shafts.
Preferably, the linker is a hexagonal linker; the drill rod joint is provided with a drill rod inner hexagonal joint, and the drill rod joint is provided with a drill rod inner hexagonal joint connected with the polish rod outer hexagonal joint and a drill rod outer hexagonal joint connected with the drill rod inner hexagonal joint.
Preferably, the part of the guide pipe positioned in the drill rod head is a drill rod head guide pipe, and the drill rod head is provided with a cover plate which closes the tail end of the drill rod head guide pipe and is used for being flushed away under the action of the drill rod head guide pipe.
Preferably, a support plate is arranged inside the drill rod and used for supporting and fixing the flow guide pipe.
Preferably, the drill rod comprises a rod barrel, the support plate is a circular plate fixed inside the rod barrel, the circular plate is arranged at equal intervals, and a fixing hole for supporting the flow guide pipe is formed in the center of the circular plate.
Preferably, the hole guiding device further comprises a hole guiding frame fixed on the static pile press, a drilling mast fixed on the hole guiding frame, a pressurizing winch fixed on the drilling mast, and a power head movably mounted on the drilling mast, wherein the drill rod is fixed on the power head, and the pressurizing winch is connected with the power head.
Compared with the background technology, the hole-leading type static pile press with the pressure filling function provided by the utility model is improved aiming at the existing hole-leading type static pile press; the improved machine comprises a static pile press and a hole guiding device arranged on the static pile press, wherein the hole guiding device is provided with a drill rod, and a flow guide pipe is arranged inside the drill rod.
The hole leading type static pile press with the pressure filling function performs pile pressing operation through the static pile press, hole leading operation is performed through the hole leading device, and pressure filling operation is performed through the flow guide pipe. In the specific process, the precast pile is hollow, a drill rod of the hole guiding device can downwards penetrate through the precast pile, and the precast pile is firstly pressed by a static pile press; when encountering a sand interlayer, carrying out hole guiding operation on the sand interlayer through a hole guiding device; and (4) continuously carrying out static pressure pile on the pile after the hole leading is finished, stopping static pressure when the effective length of the precast pile reaches the preset length, connecting the drill rod with external pressure irrigation equipment, and filling a pressure irrigation medium such as concrete into the precast pile through the flow guide pipe to realize pressure irrigation operation. The hole-leading static pile press with the press-filling function realizes the three operations on the same machine, and additionally improves the bearing capacity of the precast pile end, thereby reducing the effective length of the precast pile and lowering the construction cost, and improving the working efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of a leading hole type static pile press with a press-grouting function according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a hole guiding device according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a drill rod provided in accordance with an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a drill bit head according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a drill head according to an embodiment of the present invention.
Wherein:
1-hole guiding device, 2-static pile press, 11-power head, 12-drill mast, 13-drill rod, 14-pressurizing winch, 15-hole guiding frame, 131-drill rod section, 132-auger rod section, 133-drill rod head, 1331-drill rod head inner hexagonal joint, 1332-drill rod head barrel, 1333-drill rod head guide pipe, 1334-drill rod head support plate, 1335-cover plate, 1336-gland component and 1337-drill bit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings.
Referring to fig. 1 to 5, in which fig. 1 is a schematic structural view of a guiding hole type static pile press with a pressure grouting function according to an embodiment of the present invention, fig. 2 is a schematic structural view of a guiding hole device according to an embodiment of the present invention, fig. 3 is a schematic structural view of a drill rod according to an embodiment of the present invention, fig. 4 is a schematic structural view of a drill rod head according to an embodiment of the present invention, and fig. 5 is a schematic sectional view of the drill rod head according to an embodiment of the present invention.
In a first specific embodiment, the hole guiding type static pile driver with the pressure filling function provided by the utility model comprises a static pile driver 2 and a hole guiding device 1 arranged on the static pile driver 2, wherein the hole guiding device 1 is provided with a drill rod 13, and a flow guiding pipe is arranged inside the drill rod 13.
It should be noted that the hole-leading type static pile press with the pressure filling function provided by the utility model is improved aiming at the existing hole-leading type static pile press, the original static pile press 2 and the hole-leading device 1 are utilized to respectively realize the pile pressing operation and the hole-leading operation, and meanwhile, a guide pipe is arranged in a drill rod 13 of the hole-leading device 1, so that the hole-leading type static pile press has the pressure filling function. As for the concrete structure and working principle of the static pile press 2 and the hole guiding device 1, reference can be made to the prior art, and the detailed description is omitted here.
In this embodiment, the hole-leading type static pile press having the press-filling function performs a pile pressing operation by the static pile press 2, a hole-leading operation by the hole-leading device 1, and a press-filling operation by the flow guide pipe. In the specific process, the precast pile is hollow, the drill rod 13 of the hole guiding device 1 can downwards penetrate through the precast pile, and the precast pile is firstly pressed by the static pile press 2; when encountering a sand interlayer, carrying out hole guiding operation on the sand interlayer through the hole guiding device 1; and (3) continuously carrying out static pressure pile on the pile after the hole leading is finished, stopping static pressure when the effective length of the precast pile reaches the preset length, connecting the drill rod 13 with external pressure irrigation equipment, and filling a pressure irrigation medium such as concrete into the precast pile through a flow guide pipe to realize pressure irrigation operation.
The hole-leading static pile press with the press-filling function realizes the three operations on the same machine, and additionally improves the bearing capacity of the precast pile end, thereby reducing the effective length of the precast pile and lowering the construction cost, and improving the working efficiency.
It should be noted that there are various arrangement forms of the draft tube, such as a single tube type and a multi-tube type in number, and the same shall belong to the description scope of the present embodiment.
Illustratively, the flow guide pipe adopts a double-pipe parallel structure form, and comprises a dry powder flow guide pipe and a wet slurry flow guide pipe, wherein the dry powder flow guide pipe and the wet slurry flow guide pipe have the same principle but different functions, the dry powder flow guide pipe is used for dry spraying of the vegetable cement, and the wet slurry flow guide pipe is used for wet spraying of the concrete. Spraying plain cement in 20 meters below the ground through a dry powder diversion pipe, and spraying concrete in 20 meters below the ground through a wet spraying diversion pipe; the powder injection adopts a 1MPa air compressor.
Besides, the drill rod 13 is composed of a plurality of rod segments and the drill rod head 133, and the number of the rod segments includes, but is not limited to, a plurality of segments with a number greater than or equal to two, which also belongs to the description scope of the present embodiment.
In this embodiment, the guide pipe penetrates all the rod sections and the drill rod head 133, and when the device is used, the guide pipe is connected to an external pressure irrigation device, such as a pressure irrigation system pipeline, at the rod section of the first section, the introduced concrete flows out of the drill rod head 133 through the guide pipe, and the precast pile is filled at the lower end of the drill rod head 133.
Illustratively, the drill pipe 13 is an assemblable long auger pipe, and the rod sections include a rod section 131 and an auger rod section 132, and the rod section 131 and the auger rod section 132 are different in that the auger rod section 132 is externally provided with a helical blade.
In this embodiment, the rod section 131, the auger section 132 and the drill rod head 133 are connected in sequence, the rod section 131 is the first section from top to bottom, the auger section 132 is the first section from bottom to top, and the drill rod head 133 is located at the lowest end.
It should be noted that the PHC tubular pile after the pressure irrigation operation of the guide pipe can improve the bearing capacity and reduce the effective pile length; when the bearing capacity of the foundation meets the requirement, the construction process of static pressure PHC tubular piles matched with long spiral guide holes for pressure irrigation is adopted, the problem that the precast piles cannot penetrate through a sand interlayer when encountering the sand interlayer can be solved, the length of the effective tubular piles can be reduced to be too long, and meanwhile, the effective tubular piles can be prevented from being on a hard gravelly soil bearing layer. This scheme is to environmental protection material saving, and noise reduction for the time limit for a project has the effect that shows the promotion.
It should be noted that there are various connection forms of the bar sections, including but not limited to the following one.
Illustratively, joints for connection are arranged between the rod sections and the drill rod head 133, and the joints are axially fixed through pin shafts.
Specifically, the joint is a hexagonal joint; the polished rod section 131 is provided with a polished rod outer hexagonal joint, the drill rod head 133 is provided with a drill rod head inner hexagonal joint 1331, and the auger rod section 132 is provided with a drill rod inner hexagonal joint connected with the polished rod outer hexagonal joint and a drill rod outer hexagonal joint connected with the drill rod head inner hexagonal joint 1331.
It should be noted that the inner hexagonal joint and the outer hexagonal joint can be connected, and the flow guide pipe can be communicated after the connection, so that the concrete can be conveyed.
Further, the portion of the guide pipe located inside the drill rod head 133 is a drill rod head guide pipe 1333, and the drill rod head 133 is provided with a cover plate 1335 for closing the end of the drill rod head guide pipe 1333 and being flushed away by the drill rod head guide pipe 1333.
In this embodiment, the cover plate 1335 is fixed by the gland assembly 1336, the cover plate 1335 may be a rubber plate with certain elasticity, and the cover plate 1335 plays a role of protecting the flow guide pipe. When the hole guiding device 1 performs hole guiding operation, the cover plate 1335 seals the guide pipe to prevent soil from entering the guide pipe from bottom to top; when the draft tube is pressure-poured, the concrete flows out from the cover 1335.
Besides, a support plate is arranged inside the drill rod 13 and used for supporting and fixing the flow guide pipe.
Illustratively, the drill rod 13 includes a rod barrel, the support plate is a circular plate fixed inside the rod barrel, the circular plate is arranged at equal intervals, and the center of the circular plate is provided with a fixing hole for supporting the flow guide pipe.
Specifically, it should be noted that the structure of the polished rod section 131 and the auger rod section 132 is similar except for the helical blade, and in the description of the remaining structure: the rod barrel is of a sleeve structure, the outer hexagonal connector and the inner hexagonal connector are fixedly connected to two ends of the rod barrel respectively, the supporting plate is a circular plate with a hole in the middle, the supporting plate is fixedly connected in the rod barrel at equal intervals, the guide pipe penetrates through a round hole in the supporting plate and is fixedly connected in the rod barrel, and two ends of the guide pipe are communicated with round holes in the outer hexagonal connector and the inner hexagonal connector respectively.
Specifically, the drill rod head 133 includes a drill rod head internal hexagonal joint 1331, a drill rod head rod barrel 1332, a drill rod head guide pipe 1333, a drill rod head support plate 1334, a cover plate 1335, a gland assembly 1336 and a drill bit 1337, wherein the drill bit 1337 and the drill rod head internal hexagonal joint 1331 are respectively and fixedly connected to two ends of the drill rod head rod barrel 1332, the drill rod head support plate 1334 is a circular plate with a hole in the middle, the drill rod head support plate 1334 is fixedly connected to the drill rod head rod barrel 1332 at equal intervals, the drill rod head guide pipe 1333 passes through a circular hole in the drill rod head support plate 1334 and is fixedly connected to the drill rod head rod barrel 1332, two ends of the drill rod head guide pipe 1333 are respectively and fixedly connected to the drill bit 1337 and the drill rod head internal hexagonal joint 1, the middle drill rod head guide pipe 1333 is through, and the rubber plate is fixedly connected to the lower end of the drill rod head guide pipe 3 by the gland assembly 6.
Besides, the hole guiding device 1 further comprises a power head 11, a drill mast 12, a pressurized winch 14 and a hole guiding frame 15, wherein the power head 11 is an electric power head, the hole guiding frame 15 is fixedly connected to the body of the static pile press 2, the drill mast 12 is fixedly connected to the hole guiding frame 15, the pressurized winch 14 is fixedly connected to the drill mast 12, the power head 11 is installed on the drill mast 12, the pressurized winch 14 is connected to the power head 11, and a steel wire rope of the pressurized winch 14 penetrates through a pulley on the drill mast 12 to be fixedly connected with the power head 11.
In addition, the hole guiding device 1 can guide holes in the middle pile position, and can rotate to the side pile position on the machine body of the static pile press 2 to perform hole guiding and pile pressing construction, and the hole guiding and the pile pressing method of the side pile are the same as those of the middle pile.
In a specific working process, the static pressure, hole guiding and pressure filling construction is carried out by adopting the leading hole type static pile press with the pressure filling function of the technical scheme. The precast pile firstly adopts a static pile press 2 to carry out pile pressing operation, when meeting a sand interlayer, a hole guiding device 1 is used for guiding the sand interlayer, and after the hole guiding is finished, static pile pressing is continuously carried out on the pile; stopping static pressure when the effective length of the precast pile reaches a preset length; the hole guiding device 1 is used for guiding the hole in the precast pile, when the depth of a drill 1337 reaches the bearing end face of the precast pile, the hole guiding is stopped, a drill rod 13 is connected with a pipeline of a pressure irrigation system, concrete enters a flow guide pipe from the pressure irrigation system and finally reaches the lower end of the drill 1337, the concrete in a flow guide pipe 1333 of a drill rod head is flushed away under the pressure action, a rubber plate at the lower end of the drill 1337 reaches the lower part of the bearing surface of the lower end of the precast pile, the rubber plate is fully combined with the virtual soil, the drill rod 13 is gradually lifted, the redundant concrete fills the inner cavity of the precast pile at the lower end, and the pressure irrigation of the concrete is stopped when a set value is reached; wherein, the dry powder diversion pipe is used for dry spraying the plain cement within 20 meters below the ground, and when the underground pressure exceeds 20 meters, the wet spraying diversion pipe is used for wet spraying the concrete due to overlarge pressure.
In conclusion, the hole-leading type static pile press with the pressure filling function integrates the hole-leading function, the static pressure function and the pressure filling function, hole-leading operation, static pressure operation and pressure filling operation are carried out synchronously, the precast pile can penetrate through a sand layer to enter a reliable bearing layer, the bearing capacity of the precast pile end can be improved, the effective pile length is reduced, the construction quality is improved, the construction period is shortened, and the economic benefit is improved.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The leading hole type static pile press with the press-filling function provided by the utility model is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The hole leading type static pile press with the pressure filling function comprises a static pile press (2) and a hole leading device (1) arranged on the static pile press (2), and is characterized in that the hole leading device (1) is provided with a drill rod (13), and a flow guide pipe is arranged inside the drill rod (13).
2. The hole-leading static pile press with pressure irrigation function as claimed in claim 1, wherein said flow-guide includes a dry powder flow-guide for dry spraying cement and a wet slurry flow-guide for wet spraying concrete.
3. The guiding-hole static pile press with the pressure filling function as claimed in claim 1, wherein the drill rod (13) is composed of a plurality of rod sections and a drill rod head (133), and the guiding pipe penetrates all the rod sections and the drill rod head (133).
4. The guiding-hole static pile press with the pressure irrigation function as recited in claim 3, characterized in that the rod section comprises a smooth rod section (131) and an auger rod section (132) provided with a helical blade on the outside, and the smooth rod section (131), the auger rod section (132) and the auger rod head (133) are connected in sequence.
5. A hole leading type static pile press with a pressure filling function as claimed in claim 4, wherein joints for connection are arranged between the rod sections and the drill rod head (133), and the joints are axially fixed through pin shafts.
6. A hole leading type static pile press with a press filling function as claimed in claim 5, wherein the joint is a hexagonal joint; the polished rod section (131) is provided with a polished rod outer hexagonal joint, the drill rod head (133) is provided with a drill rod head inner hexagonal joint (1331), and the auger rod section (132) is provided with a drill rod inner hexagonal joint connected with the polished rod outer hexagonal joint and a drill rod outer hexagonal joint connected with the drill rod head inner hexagonal joint (1331).
7. The guide-hole static pile press with pressure filling function as claimed in claim 3, wherein the portion of the guide pipe located in the drill rod head (133) is a drill rod head guide pipe (1333), and the drill rod head (133) is provided with a cover plate (1335) closing the end of the drill rod head guide pipe (1333) and used for being flushed away by the drill rod head guide pipe (1333).
8. The static pressure pile driver with pressure filling function as claimed in any one of claims 1 to 7, wherein the drill rod (13) is provided with a support plate inside for supporting and fixing the guide tube.
9. The guiding-hole static pile press with pressure irrigation function as claimed in claim 8, wherein the drill rod (13) comprises a rod barrel, the support plate is a circular plate fixed inside the rod barrel, the circular plate is arranged at equal intervals, and the center of the circular plate is provided with a fixing hole for supporting the guide pipe.
10. The leading hole type static pile press with the pressure irrigation function as claimed in any one of claims 1 to 7, characterized in that the leading hole device (1) further comprises a leading hole frame (15) fixed on the static pile press (2), a drill mast (12) fixed on the leading hole frame (15), a pressure winch (14) fixed on the drill mast (12), and a power head (11) movably mounted on the drill mast (12), wherein the drill rod (13) is fixed on the power head (11), and the pressure winch (14) is connected with the power head (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122720099.0U CN216551933U (en) | 2021-11-08 | 2021-11-08 | Guide hole type static pile press with press-filling function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122720099.0U CN216551933U (en) | 2021-11-08 | 2021-11-08 | Guide hole type static pile press with press-filling function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216551933U true CN216551933U (en) | 2022-05-17 |
Family
ID=81571357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122720099.0U Active CN216551933U (en) | 2021-11-08 | 2021-11-08 | Guide hole type static pile press with press-filling function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216551933U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118029893A (en) * | 2024-04-11 | 2024-05-14 | 山河智能装备股份有限公司 | Hole guiding pile pressing machine |
-
2021
- 2021-11-08 CN CN202122720099.0U patent/CN216551933U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118029893A (en) * | 2024-04-11 | 2024-05-14 | 山河智能装备股份有限公司 | Hole guiding pile pressing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102678040B (en) | Drilling device and method for baseplate in coal mine roadway | |
| CN101812976B (en) | Adjustable multiple coil extruding and expanding drilling tool | |
| CN101173517A (en) | Pile-pulling construction method | |
| CN114517472B (en) | Construction method of carrier pile | |
| CN216551933U (en) | Guide hole type static pile press with press-filling function | |
| CN102373705A (en) | Pile sinking device and method for outer digging pre-stressed centrifugal pipe pile and square pile | |
| CN205171547U (en) | Recoverable miniature stock wall | |
| CN210049233U (en) | Construction equipment based on high-pressure jet grouting pile application | |
| CN207673287U (en) | A kind of jet-propelled high-efficiency helical drilling tool | |
| CN116291471A (en) | Construction method and tunneling equipment for large-diameter vertical shaft of upper soft and lower hard stratum | |
| CN206562910U (en) | A kind of auger machine | |
| CN102286971A (en) | Concrete-filled steel tube core column socketed pile | |
| CN214614035U (en) | High-strength prestressed concrete composite pile | |
| CN201650154U (en) | Adjustable multi-stage helical extruding type drilling tool | |
| CN113882363A (en) | Pile end post-grouting device, grouting method and construction method for CFG pile | |
| CN202124857U (en) | Splitting pile | |
| CN216379496U (en) | Composite precast pile with high bearing capacity | |
| CN212614482U (en) | Stirring device with telescopic characteristic | |
| CN208455612U (en) | Great diameter and long combined deposited pile structure | |
| CN204691673U (en) | A kind of subgrade mud protection churning driven | |
| CN221052571U (en) | Prefabricated hollow pile extension pile | |
| CN214994003U (en) | Small foundation pile adopting steel pipe post grouting | |
| CN212104085U (en) | Long spiral drill rod grouting device of hydraulic static pile press | |
| CN218622194U (en) | Rigid-flexible combined pile | |
| CN216839467U (en) | Integrated prefabricated tubular pile structure for deep foundation pit supporting and dewatering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |