CN113684830A - Root key type pile side post-grouting device and grouting method applied to rectangular bored pile - Google Patents
Root key type pile side post-grouting device and grouting method applied to rectangular bored pile Download PDFInfo
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- CN113684830A CN113684830A CN202110806390.1A CN202110806390A CN113684830A CN 113684830 A CN113684830 A CN 113684830A CN 202110806390 A CN202110806390 A CN 202110806390A CN 113684830 A CN113684830 A CN 113684830A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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Abstract
The invention relates to the field of civil engineering, in particular to a construction method of a root key type pile side post-grouting device applied to a rectangular bored pile. A pushing sleeve is arranged on a through hole on the outer side of a rectangular grouting ring pipe of the root key type pile side post-grouting device applied to the rectangular bored pile, and a pushing precession bolt is arranged on a through hole on the inner side of the rectangular grouting ring pipe; the outer side of the grouting spray head device is provided with an expandable iron flap; the grouting spray head device is fixed in a through hole part on the outer side of the pipe body of the rectangular grouting ring pipe, and one end of the jacking sleeve which is communicated with the inside of the rectangular grouting ring pipe is connected with the jacking precession bolt, and the other end of the jacking sleeve is fixed with the iron clack; through holes which are communicated with each other are respectively arranged on the transverse or longitudinal pipe bodies of the rectangular grouting ring pipe; a grouting straight pipe is arranged on a through hole on the inner side of one of the transverse or longitudinal pipe bodies; the grouting device and the grouting method effectively solve the engineering problem that the grouting pipe cannot be preassembled in the rectangular artificial hole digging pile foundation reinforcement cage, and provide reliable grouting equipment and method for similar engineering.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to a construction method of a root key type pile side post-grouting device applied to a rectangular bored pile.
Background
At present, a rectangular bored pile foundation is mainly used for the engineering condition that the load transferred by an upper structure is larger horizontal load and bending moment load, the bored pile generates larger disturbance to soil around the pile in the construction process, especially, the friction between the soil on the pile side and a pile body is greatly reduced by mud on the pile side generated by a mud retaining wall, so that the bearing performance of a pile foundation is reduced, and the engineering quality and safety are adversely affected. The pile foundation post-grouting technology can improve the problems and the mechanical property of the soil body around the pile so as to improve the bearing property of the pile foundation.
But pile foundation post-grouting technology is mostly used for circular bored piles, and a grouting ring pipe and a straight pipe can be assembled on a prefabricated reinforcement cage of a circular pile in advance and are lowered to a specified pile hole position along with the reinforcement cage. The construction of rectangular piles is different from that of circular piles, and because the rectangular cross sections do not have stable structures with circular cross sections, reinforcing steel bars of the rectangular piles cannot be placed to specified pile hole positions by a crane after being prefabricated, and binding work can only be carried out in pile holes manually. Meanwhile, the common pile foundation post-grouting process has the problems that a grouting nozzle is difficult to open and plug, the combination degree of pressed cement paste and a soil body is difficult to determine and the like, so that the bearing performance of the pile foundation has certain discreteness, the effect of post-grouting often cannot reach the expected setting, the construction period is prolonged and the construction cost is increased to a certain extent, the key for effectively improving the bearing performance of the rectangular bored pile is realized by how to solve the problems, and the post-grouting technology is more mature and reasonable.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the prior art, the invention aims to provide a grouting device which cannot be preassembled on a reinforcement cage due to specific construction conditions and a construction method for achieving a better grouting effect by using the grouting device.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a root key type pile side post-grouting device applied to a rectangular bored pile, which comprises a rectangular grouting ring pipe, a jacking sleeve, a grouting spray head device, an iron flap and a jacking precession bolt;
through holes communicated with the pipe body are oppositely arranged on the pipe body of the rectangular grouting ring pipe, a pushing sleeve is arranged on the through hole at the outer side of the rectangular grouting ring pipe, and a pushing precession bolt is arranged on the through hole at the inner side of the rectangular grouting ring pipe; the outer side of the grouting spray head device is provided with an expandable iron flap; the grouting spray head device is fixed at the through hole part at the outer side of the pipe body of the rectangular grouting ring pipe and is communicated with the inside of the rectangular grouting ring pipe; the pushing sleeve is closely connected with the grouting spray head device;
the pushing sleeve is arranged along the radial direction of the rectangular grouting ring pipe body and is positioned between the inner through hole and the outer through hole; one end of the pushing sleeve is connected with the pushing screw-in bolt, and the other end of the pushing sleeve is fixed with the iron petal;
the transverse or longitudinal pipe body of the rectangular grouting ring pipe is respectively provided with through holes which are communicated with each other; a grouting straight pipe is arranged on a through hole on the inner side of one of the transverse or longitudinal pipe bodies;
the pushing screw bolt pushes the pushing sleeve to move outwards, and the pushing sleeve pushes the iron petal to move.
The invention relates to a root key type pile side post-grouting device applied to a rectangular bored pile, which is characterized in that a plurality of iron petals are formed and are wrapped around a grouting spray head device;
the outer side of the grouting spray head device is provided with a plurality of expandable iron petals, the iron petals are bonded into a root key shape through spot welding bonding points, the iron petals in a wrapping state are in a furled shape, the pushing sleeve pushes the iron petals, and the iron petals are outwards expanded when being pressed and outwards pushed out.
The root key type pile side post-grouting device applied to the rectangular bored pile is characterized in that a grouting nozzle device is arranged at a grouting port and is tightly adhered to a rectangular grouting ring pipe through a connecting bolt to be welded and fixed, and a grout outlet is in an expanded head shape.
The invention relates to a root key type pile side post-grouting device applied to a rectangular bored pile, wherein a rectangular grouting ring pipe is formed by mutually splicing a transverse pipe body and a longitudinal pipe body; the transverse pipe body is provided with a first telescopic sleeve device, and the longitudinal pipe body is provided with a second telescopic sleeve device.
According to the root key type pile side post-grouting device applied to the rectangular bored pile, the pushing sleeve is located outside the connecting bolt and is pressed by the pushing precession bolt to move outwards to be in close contact with the iron clack.
The root key type pile side back grouting device applied to the rectangular bored pile is characterized in that a steel cap is welded to the inner wall of a grouting ring pipe in a clinging manner by a steel cap rubber plug with a strip steel cap, and an inner side through hole of the rectangular grouting ring pipe is blocked.
A grouting construction method of a root key type pile side rear grouting device applied to a rectangular bored pile comprises the following construction steps:
step one, assembling a rectangular grouting ring pipe;
step two, determining the position of the grouting spray head device: the position of the grouting spray head device and the depth of the grouting spray head device embedded into the soil body are adjusted by utilizing the telescopic longitudinal pipe body and the telescopic transverse pipe body;
step three, jacking the root key type grouting spray head device: the pushing screw-in bolt drives the pushing sleeve and the iron petal to move towards the inside of the soil body, and when the iron petal reaches the designated position, the iron petal is opened into a horn shape, so that the mounting and use preparation work of the grouting sprayer device is completed;
step four, removing the pushing screw-in bolt, and plugging the through hole after removing the pushing screw-in bolt through a rubber plug;
fifthly, when the iron flaps around the grouting spray head device are opened to a preset position, the grouting straight pipe is communicated with the rectangular grouting ring pipe and is connected with the grouting pump;
pouring concrete in the pile hole, after the concrete of the pile body is initially set, injecting clear water into the rectangular grouting ring pipe to perform a plug opening test of the grouting nozzle device, and dredging a grouting pipeline;
and seventhly, grouting the root key type pile side rear grouting device through the grouting straight pipe.
The mud jacking construction method of the root key type pile side post-grouting device applied to the rectangular bored pile is characterized in that pile side soil bodies of the rectangular grouting ring pipe subjected to seven-step grouting are tightly combined.
Compared with the prior art, the invention has the following remarkable advantages:
(1) the invention effectively solves the engineering problem that the grouting pipe cannot be preassembled in the rectangular artificial hole digging pile foundation reinforcement cage by taking the telescopic rectangular grouting ring pipe as a main structure, provides reliable grouting equipment and a method for similar engineering, and can effectively improve the post grouting effect by driving the grouting spray head device to change the position through the grouting ring pipe.
(2) The root key type grouting spray head device is adopted, the closed iron petals tightly wrapped outside the grouting spray head device are in a root key shape, the grouting spray head can be safely and smoothly embedded into a soil body, in addition, the iron petals move towards the inside of the soil body under the pushing action of the pushing sleeve, meanwhile, the expanded head of the grouting spray head device is expanded into a horn shape, and the process is ready for subsequent grouting. The design effectively prevents the problems of difficult plug opening, blockage of the grouting spray head and the like which possibly occur in the post grouting construction process, and provides reliable guarantee for the smooth development of post grouting work and grouting quality.
(3) The root key type grouting spray head device is adopted, the grouting spray head can be in closer contact with the soil body, the contact between pressed cement paste and the soil body is effectively improved, and the grouting effect is greatly improved.
(4) The rectangular hole digging pile adopting the root key type pile side post-grouting device can effectively improve the bearing performance of a pile foundation, reduce the displacement of the pile foundation and greatly reduce the cost.
(5) The device has simple structure, adopts manual construction operation to complete construction operation, is convenient for field construction and use, can be simultaneously carried out with other construction procedures of the pile foundation (such as steel bar binding work in pile holes), accelerates the construction progress, and has reasonable design, convenient operation and convenient popularization and application.
Drawings
FIG. 1 is a schematic diagram of a horizontal cross-sectional view of the overall system of the present invention when the root-key grouting nozzle device is closed;
FIG. 2 is a schematic diagram of a vertical cross-sectional view of the overall system of the present invention when the root-key grouting nozzle device is closed;
FIG. 3 is a schematic view of a horizontal cross-section of a root-key grouting nozzle device of the present invention when closed;
FIG. 4 is a schematic vertical sectional view of the root-key grouting nozzle device of the present invention closed;
FIG. 5 is a schematic diagram of a horizontal cross-sectional view of the overall system of the root-key grouting nozzle device of the invention when open;
FIG. 6 is a schematic view in vertical section of the overall system with the root-key grouting nozzle device of the invention open;
FIG. 7 is a schematic view of a horizontally sectioned root-key grouting nozzle device of the present invention when open;
FIG. 8 is a schematic view in vertical section of the root-key grouting nozzle device of the invention when open;
FIG. 9 is a schematic front view of the construction of the tie bolt assembly of the present invention;
FIG. 10 is a schematic side view of the construction of the tie bolt assembly of the present invention;
FIG. 11 is a schematic front view of the ejector sleeve assembly of the present invention;
FIG. 12 is a schematic side view of the construction of the ejector sleeve device of the present invention.
In the figure, 1-rectangular grouting circular pipe; 2-grouting a straight pipe; 3-a first telescopic sleeve device; 4-telescopic sleeve device and two; 5-pushing and screwing in the bolt; 6-rubber plug with steel cap; 7-grouting spray head device; 8-iron petals; 9-spot welding of the bonding point; 10-pushing the cannula; 11-connecting bolts; 12-a stop pin; 13-card slot.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
As shown in fig. 1, 2, 3 and 4, the root-key type pile side rear grouting device applied to the rectangular bored pile comprises a rectangular grouting ring pipe 1, a grouting straight pipe 2, a first telescopic sleeve device 3, a second telescopic sleeve device 4, a pushing screw bolt 5, a rubber plug with a steel cap 6 and a grouting nozzle device 7. The telescopic sleeve device I3 ensures that the rectangular grouting ring pipe 1 longitudinally stretches; and the second telescopic sleeve device 4 ensures that the rectangular grouting ring pipe 1 is transversely telescopic.
The first telescopic sleeve device 3 and the second telescopic sleeve device 4 are connected with the rectangular grouting ring pipe 1 into a whole; the jacking and screwing-in bolt 5 is used as a force transmission component in the stage that the root key type grouting spray head device enters the soil body around the pile; the rubber plug 6 with the steel cap is used as a hole filling component after the preparation work of the grouting device is finished; the grouting spray head device 7 is welded and fixed with the rectangular grouting ring pipe 1 through a connecting bolt 11 and is wrapped by an iron flap 8 outside the grouting spray head device, and the iron flap 8 is combined into a closed root key shape through a spot welding bonding point 9 and is tightly contacted with a movable pushing sleeve 10 sleeved on the connecting bolt 11; the top of the root key can be sharp, so that the root key can smoothly enter the soil body; when the iron petal is required to be opened, the spot welding sticky point can be easily and smoothly opened through the relative motion between the spray head with the expanded head shape and the iron petal, so that the spray head can be directly contacted with the soil body.
As shown in fig. 9 and 10, the connecting bolt 11 is provided with a locking groove 13.
The pushing sleeve 10 is connected with the iron petal 8, when the pushing screw bolt 5 pushes the pushing sleeve 10 to move towards the soil body, the iron petal 8 and the pushing sleeve 10 move synchronously, the mud jacking sprayer device 7 is fixed, and the iron petal 8 is flared through the expanding head at the tail end of the mud jacking sprayer device 7.
As shown in fig. 11 and 12, the pushing sleeve 10 is provided with a stopping pin 12 matching with the slot 13; as shown in fig. 5 and 6, the straight grouting pipe 2 is spirally fixed on the inner side wall of the rectangular grouting ring pipe 1. According to the invention, the closed iron clack tightly wrapped outside the grouting spray head device can safely and smoothly embed the grouting spray head into a soil body, so that the problems of difficult plug opening, blockage of the grouting spray head and the like which can occur in the post-grouting construction process are effectively prevented, and reliable guarantee is provided for smooth development of post-grouting work and grouting quality.
The pile foundation post-grouting construction by adopting the rectangular hole digging pile side post-grouting device comprises the following steps:
(1) the grouting device comprises a rectangular grouting ring pipe 1, a grouting straight pipe 2, a first telescopic sleeve device 3 and a second telescopic sleeve device 4 for adjusting the longitudinal size and the transverse size of the rectangular grouting ring pipe, a pushing and screwing bolt 5, a rubber plug 6 with a steel cap and a root key type grouting spray head device 7;
(2) as shown in fig. 1 and 2, the grouting nozzle device 7 is welded on the outer side wall of the rectangular grouting ring pipe 2 by a connecting bolt 11; as shown in fig. 9 and 10, the connecting bolt 11 has preformed slots 13 on both sides;
(3) as shown in fig. 1 and 2, four iron petals 8 are adopted, are bonded into a root key shape by spot welding bonding points 9 and are tightly wrapped outside a grouting spray head device 7, and the opening sides of the iron petals 8 are tightly contacted with a pushing sleeve 10; as shown in fig. 11 and 12, the pushing sleeve 10 has a stopping pin 12 inside;
(4) determining the position of the grouting nozzle device 7: by utilizing the first telescopic sleeve device 3 and the second telescopic sleeve device 4 with the longitudinal size and the transverse size of the rectangular grouting ring pipe, the position of the grouting spray head device and the depth of the grouting spray head device embedded into the soil body can be adjusted in the longitudinal direction and the transverse direction respectively. In addition, the rectangular grouting ring pipe 1 can serve as a support structure in the process, and guarantee is provided for smooth development of subsequent work;
(5) the root key formula mud jacking shower nozzle device is gone into: as shown in fig. 1 and fig. 2, the pushing screw bolt 5 drives the pushing sleeve 10 and the iron petal 8 to move towards the inside of the soil body, in the process, as shown in fig. 7 and fig. 8, the enlarged head at the grout outlet of the grouting spray head device 7 opens the welding point 9 and the iron petal 8 gradually expands, after reaching the designated position, the stop pin 12 inside the pushing sleeve 10 is tightly combined and fixed with the prefabricated clamping groove 13 at the two sides of the connecting bolt 11, at the moment, the iron petal 8 is flared, and the preparation work for installation and use of the grouting spray head device is completed;
(6) as shown in fig. 5 and 6, the pushing screw bolt 5 combines the pushing sleeve 10 with the connecting bolt 11, and after the installation of the grouting nozzle device is completed, the pushing screw bolt is no longer needed, and the hole left on the rectangular grouting ring pipe 1 is filled with the rubber plug 6 with the steel cap which is tightly welded on the inner wall of the grouting ring pipe 1;
(7) as shown in fig. 5 and 6, when the iron flaps 8 around the grouting nozzle device 7 are opened to a predetermined position, the grouting straight pipe 2 which is directly connected to the above-ground grouting pump is spirally fixed on the inner wall of the rectangular grouting ring pipe 1, and the process also plays a role in filling and pushing holes left by the screwing-in bolt 5;
(8) pouring concrete in the pile hole, after the concrete of the pile body is initially set, injecting clear water into the rectangular grouting ring pipe 1 to perform a plug opening test of the grouting spray head device 7, and dredging a grouting pipeline;
(9) and (3) grouting the root key type pile side rear grouting device through the grouting straight pipe 2.
Because there is great uncertainty in the nature of the soil body of pile periphery, if the stake side soil body is harder, it is difficult to get into directly through root key formula mud jacking shower nozzle device, perhaps the soil body is inside to mix harder material, if: rocks, tree roots, etc.; the drilling operation can be preferentially carried out, and then the iron flaps 8 in the packing shape on the rectangular grouting ring pipe 1 are inserted into the drilled holes to repeat the steps.
The cement paste is injected into the rectangular ring pipe through the grouting straight pipe and is pressed into the soil body on the pile side by the grouting spray head device on the ring pipe, so that the physical and chemical properties of the soil body around the pile are changed, the side frictional resistance of the soil body around the pile is improved, and the bearing performance of the pile body is improved. The whole device does not need to be dismantled and is left in the pile body after the grouting is finished.
By adopting the rectangular hole digging pile of the root key type pile side post-grouting device, the bearing performance of a pile foundation can be effectively improved, the displacement of the pile foundation is reduced, and the cost is greatly reduced; the device has simple structure, adopts manual construction operation to complete construction operation, is convenient for field construction and use, can be simultaneously carried out with other construction procedures of the pile foundation (such as steel bar binding work in pile holes), accelerates the construction progress, and has reasonable design, convenient operation and convenient popularization and application. The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. Be applied to root key formula stake side back mud jacking device of rectangle bored pile, its characterized in that: the grouting device comprises a rectangular grouting ring pipe, a pushing sleeve, a grouting spray head device, an iron clack and a pushing screw-in bolt;
through holes communicated with the pipe body are oppositely arranged on the pipe body of the rectangular grouting ring pipe, a pushing sleeve is arranged on the through hole at the outer side of the rectangular grouting ring pipe, and a pushing precession bolt is arranged on the through hole at the inner side of the rectangular grouting ring pipe; the outer side of the grouting spray head device is provided with an expandable iron flap; the grouting spray head device is fixed at the through hole part at the outer side of the pipe body of the rectangular grouting ring pipe and is communicated with the inside of the rectangular grouting ring pipe; the pushing sleeve is closely connected with the grouting spray head device;
the pushing sleeve is arranged along the radial direction of the rectangular grouting ring pipe body and is positioned between the inner through hole and the outer through hole; one end of the pushing sleeve is connected with the pushing screw-in bolt, and the other end of the pushing sleeve is fixed with the iron petal;
the transverse or longitudinal pipe body of the rectangular grouting ring pipe is respectively provided with through holes which are communicated with each other; a grouting straight pipe is arranged on a through hole on the inner side of one of the transverse or longitudinal pipe bodies;
the pushing screw bolt pushes the pushing sleeve to move outwards, and the pushing sleeve pushes the iron petal to move.
2. The root-key pile-side back-grouting device applied to a rectangular bored pile according to claim 1, wherein: the iron petals are a plurality of iron petals which form a wrapping shape and are tightly wrapped around the mud jacking spray head device;
the outer side of the grouting spray head device is provided with a plurality of expandable iron petals, the iron petals are bonded into a root key shape through spot welding bonding points, the iron petals in a wrapping state are in a furled shape, the pushing sleeve pushes the iron petals, and the iron petals are outwards expanded when being pressed and outwards pushed out.
3. The root-key pile-side back-grouting device applied to a rectangular bored pile according to claim 1, wherein: the grouting nozzle device is characterized in that the grouting port is tightly attached to the rectangular grouting ring pipe through a connecting bolt and is welded and fixed, and the grouting port is in an expanded head shape.
4. The root-key pile-side back-grouting device applied to a rectangular bored pile according to claim 1, wherein: the rectangular grouting ring pipe is formed by mutually splicing a transverse pipe body and a longitudinal pipe body; the transverse pipe body is provided with a first telescopic sleeve device, and the longitudinal pipe body is provided with a second telescopic sleeve device.
5. The root-key pile-side back-grouting device applied to a rectangular bored pile according to claim 1, wherein: the pushing sleeve is positioned outside the connecting bolt and is pressed by the pushing precession bolt to move outwards to be in close contact with the iron clack.
6. The root-key pile-side back-grouting device applied to a rectangular bored pile according to claim 1, wherein: the steel cap is tightly welded on the inner wall of the grouting ring pipe by the rubber plug with the steel cap, and the through hole on the inner side of the rectangular grouting ring pipe is plugged.
7. A grouting construction method of a root key type pile side rear grouting device applied to a rectangular bored pile is characterized in that: the construction steps are as follows:
step one, assembling a rectangular grouting ring pipe;
step two, determining the position of the grouting spray head device: the position of the grouting spray head device and the depth of the grouting spray head device embedded into the soil body are adjusted by utilizing the telescopic longitudinal pipe body and the telescopic transverse pipe body;
step three, jacking the root key type grouting spray head device: the pushing screw-in bolt drives the pushing sleeve and the iron petal to move towards the inside of the soil body, and when the iron petal reaches the designated position, the iron petal is opened into a horn shape, so that the mounting and use preparation work of the grouting sprayer device is completed;
step four, removing the pushing screw-in bolt, and plugging the through hole after removing the pushing screw-in bolt through a rubber plug;
fifthly, when the iron flaps around the grouting spray head device are opened to a preset position, the grouting straight pipe is communicated with the rectangular grouting ring pipe and is connected with the grouting pump;
pouring concrete in the pile hole, after the concrete of the pile body is initially set, injecting clear water into the rectangular grouting ring pipe to perform a plug opening test of the grouting nozzle device, and dredging a grouting pipeline;
and seventhly, grouting the root key type pile side rear grouting device through the grouting straight pipe.
8. The grouting construction method of a root-key type pile-side back grouting device applied to a rectangular bored pile according to claim 7, wherein: and the rectangular grouting ring pipe subjected to grouting in the step seven is tightly combined with a pile side soil body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110806390.1A CN113684830B (en) | 2021-07-16 | 2021-07-16 | Root key type pile side post grouting device and method applied to rectangular hole digging pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110806390.1A CN113684830B (en) | 2021-07-16 | 2021-07-16 | Root key type pile side post grouting device and method applied to rectangular hole digging pile |
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| CN113684830B CN113684830B (en) | 2023-06-27 |
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| CN201087377Y (en) * | 2007-06-01 | 2008-07-16 | 王晶晶 | Combined injection tube of rear mud jacking filling pile |
| KR20140137571A (en) * | 2013-05-23 | 2014-12-03 | 박민서 | Grouting pile and method for reinforceing ground using thereof |
| CN107034877A (en) * | 2017-05-17 | 2017-08-11 | 东南大学 | Pile end stake side combination post jacking device and its construction method |
| CN107761722A (en) * | 2017-10-16 | 2018-03-06 | 中铁大桥局集团有限公司 | A kind of device and method for improving steel-pipe pile stake side bearing capacity |
| CN108360510A (en) * | 2018-05-09 | 2018-08-03 | 合肥学院 | A kind of grouting behind shaft or drift lining system and method increasing perfusion shaft resistance |
| CN109853528A (en) * | 2019-03-22 | 2019-06-07 | 深圳宏业基岩土科技股份有限公司 | The construction method of concrete tubular pile |
-
2021
- 2021-07-16 CN CN202110806390.1A patent/CN113684830B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201087377Y (en) * | 2007-06-01 | 2008-07-16 | 王晶晶 | Combined injection tube of rear mud jacking filling pile |
| KR20140137571A (en) * | 2013-05-23 | 2014-12-03 | 박민서 | Grouting pile and method for reinforceing ground using thereof |
| CN107034877A (en) * | 2017-05-17 | 2017-08-11 | 东南大学 | Pile end stake side combination post jacking device and its construction method |
| CN107761722A (en) * | 2017-10-16 | 2018-03-06 | 中铁大桥局集团有限公司 | A kind of device and method for improving steel-pipe pile stake side bearing capacity |
| CN108360510A (en) * | 2018-05-09 | 2018-08-03 | 合肥学院 | A kind of grouting behind shaft or drift lining system and method increasing perfusion shaft resistance |
| CN109853528A (en) * | 2019-03-22 | 2019-06-07 | 深圳宏业基岩土科技股份有限公司 | The construction method of concrete tubular pile |
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| CN113684830B (en) | 2023-06-27 |
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