CN114215055B - Construction method of enlarged head anchor rope construction device - Google Patents
Construction method of enlarged head anchor rope construction device Download PDFInfo
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- CN114215055B CN114215055B CN202210018291.1A CN202210018291A CN114215055B CN 114215055 B CN114215055 B CN 114215055B CN 202210018291 A CN202210018291 A CN 202210018291A CN 114215055 B CN114215055 B CN 114215055B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
Abstract
The invention belongs to the technical field of deep foundation pit support, and relates to a construction method of an expanded head anchor rope construction device, wherein hollow gaskets on two sides are in threaded connection with a gear through connecting strips, a round hole is formed in the middle of each hollow gasket on two sides, a control wire is wound on a drill rod and rotates along with the drill rod, a controller is connected with an electric device through the control wire, cutting blades are uniformly arranged on the hollow gaskets on two sides and are used for cutting soil bodies in the process of drilling and protruding in, buckles are respectively arranged on the inner wall of the round hole and the outer side of the drill rod, the buckles on the inner wall of the round hole are fixedly connected with the buckles on the outer side of the drill rod, and a drill bit is arranged at the end part of the drill rod; the method has the advantages of simple process, convenient operation, improved construction efficiency, shortened construction period, improved construction process, reduced cement paste waste, grouting material saving, cost reduction, high economic benefit, and capability of carrying the whole device out through the drill rod after the construction is finished, thereby realizing cyclic utilization.
Description
Technical Field
The invention belongs to the technical field of deep foundation pit support, and relates to a construction method of a construction device for an expanded head anchor cable in the reaming and anchor cable placement processes.
Background
With the high-speed development of economy, the urban scale is also larger and larger, so that the building is extended to the underground deeper and deeper, the utilization rate of urban underground space is gradually improved, and deep foundation pit engineering is more and more in urban construction. The anchor cable support system has the advantages of high construction speed, low cost, suitability for various complex geological conditions and the like, and is widely popularized and applied in urban underground engineering construction.
Compared with the common anchor cable, the enlarged head anchor cable solves the problem of small single anti-pulling bearing capacity of the common anchor cable, simultaneously optimizes the length and deformation of the anchor cable, increases the friction area, has obvious effect on improving the anti-pulling bearing capacity of the anchor cable, and enlarges the restraint effect of the soil body at the front end part of the head on the anchoring body, thereby being a main factor for improving the bearing capacity of the anchor cable. In the ordinary anchor cable construction process, in order to meet the requirement of the pulling-resistant bearing capacity, measures for increasing the length of the anchor cable or reducing the distance between the anchor cables are needed to be adopted, but the distance between the anchor cables is designed to be smaller, and the group anchor effect is easy to cause. Meanwhile, the pulling-resistant bearing capacity is also limited to a certain extent by increasing the length of the anchor cable. Related researches show (Zeng Xianming, 2009, report of rock mechanics and engineering; huang Minghua, 2018, rock soil mechanics) that when the anchor cable anchoring section reaches a certain length, the length of the anchoring section is increased, so that the improvement of the pulling-resistant bearing capacity of the anchor cable anchoring section is not obvious, and the critical anchoring length exists. The single expansion head anchor cable has higher pulling-resistant bearing capacity, small displacement, good economy and strong reliability, and is one direction worthy of popularization and technical innovation development.
At present, the most adopted construction method of the enlarged head anchor rope is high-pressure jet grouting, the cost of the method is high, the aperture of the reaming cannot be accurately controlled, the anchor rope is extremely difficult to center in the placing process, an eccentric tension member is formed, and the pulling-resistant bearing capacity of the anchor rope is affected. In recent years, less technology is disclosed about the construction of an enlarged head anchor rope, and patent (CN 106592588A) discloses a mechanical reaming enlarged head anchor rope construction method, which comprises the steps of forming a hole through an anchor rod drilling machine to form a non-reaming anchor rope hole, withdrawing a drill rod after the hole is drilled to a designed depth, removing an original drill bit, replacing the original drill bit with a mechanical reaming bit for forward reaming, wherein a wall is not protected in the drilling and reaming processes, and the hole wall is easy to collapse; the anchor cable placement is to install an enlarged head anchor cable centering bracket at the end part of the anchor cable or to add a guide steel tube in the middle of the anchor cable. Aiming at a plurality of problems existing in the construction process of the enlarged head anchor rope, a novel construction method of the enlarged head anchor rope construction device is needed to be designed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and designs and provides a construction method of an expanded head anchor cable construction device, which improves the construction speed and the pulling-resistant bearing capacity of an anchor cable, and is energy-saving and environment-friendly.
In order to achieve the above object, the main structure of the enlarged head anchor line construction device of the present invention comprises: the device comprises two side hollow gaskets, gears, control lines, round holes, connecting strips, cutting knives, drill rods, drill bits, buckles, a controller, an electric device and steel stranded wires; the two sides of the hollow gaskets are in threaded connection with the gear through connecting strips, a round hole is formed in the middle of each of the two sides of the hollow gaskets, a control wire is wound on the drill rod and rotates along with the drill rod, the controller is connected with the electric device through the control wire, the controller transmits an electric signal to the electric device through the control wire, the electric device receives the electric signal and converts the electric signal into power to control the gear to start stretching, and when the gear reaches a set size, the electric device stops operating; the cutting knife is evenly laid on the hollow gaskets on both sides, is used for cutting the soil body at the drilling and is suddenly advanced in-process, and the inner wall of round hole and the outside of drilling rod all are equipped with the buckle, fixed connection between the buckle of round hole inner wall and the buckle in the drilling rod outside, and the drill bit setting is at the tip of drilling rod.
Furthermore, the outer side of the control line is sleeved with a Kevlar material and fixed on the drill rod by using a binding belt.
Further, the diameter of the hollow gaskets at the two sides is 150mm, and the hollow gaskets are made of hard alloy.
Furthermore, the gear is a telescopic gear, the size diameter of the whole component after the gear is completely stretched is 450mm, the material is hard alloy, and the gear is contracted in the hollow gaskets at the two sides when the gear is not stretched, so that the functions of drilling and reaming are achieved.
Further, the size of the circular hole is determined according to the diameter of the anchor cable to be constructed and the size of the drill rod, and is used for controlling the centering of the anchor cable.
Further, the cutter is made of hard alloy, the dimension of the cutter in the vertical drilling direction is the radius of the hollow gaskets at two sides minus the radius of the round hole, and the dimension along the drilling direction is half of the dimension in the vertical direction.
Further, the controller and the electric device are all universal devices in the field, and the electric device is formed by connecting a miniature motor, a control mechanism and an electric part in a universal connection mode.
The invention discloses a concrete process for the construction of an expanded head anchor cable, which comprises the following steps:
(1) Drilling and positioning: determining hole sites according to the elevation and horizontal spacing of the design requirements of the excavated foundation pit according to the local geological conditions, and marking;
(2) Positioning a drilling machine: selecting a drilling machine according to actual needs, connecting the hollow gaskets on two sides provided with the gears on a drill rod through buckles, installing a drill bit at the end part of the drill rod, aligning to a hole site, adjusting an angle, and ensuring that the installation is qualified before drilling;
(3) Drilling: the gear is utilized to carry out mechanical rotation pore forming, a control wire sleeved with a Kevlar material is wound on a drill rod and connected with an external controller, the controller transmits an electric signal to an electric device through the control wire, the electric device receives the electric signal and converts the electric signal into power to control the gear to be completely stretched out for 30mm, 150mm of hollow gaskets on two sides are added at the moment, the aperture is 180mm, a drilling machine drills the pore forming, meanwhile, a drill bit sprays cement paste to protect walls, and the cement paste can also bring waste soil residues out, so that the aperture and design requirement errors are small;
(4) Reaming: after the reaming position is reached, the controller transmits an electric signal to the electric device through a control wire, the electric device receives the electric signal and converts the electric signal into a power control gear through a control mechanism to reach the reaming diameter of 450mm, the electric device continuously rotates to drill and ream, meanwhile, the cement slurry is sprayed to protect walls, the excavation depth is controlled within the specified reaming length of 0.5m, after the excavation is finished, the controller transmits the electric signal to the electric device through the control wire, the electric device receives the electric signal and converts the electric signal into the power control gear through the control mechanism to shrink, then the drill rod is pulled out, and slag soil which cannot be timely discharged is carried out in the process of pulling out the drill rod by the way;
(5) Anchor cable (grouting) is placed: placing the anchor cable on the drill bit, enabling the steel stranded wires to pass through round holes in the middle of the gaskets at two sides, enabling the steel stranded wires to be effectively concentrated in the middle of the holes, slowly extracting the drill rod after the anchor cable reaches a designated position, and pouring cement paste at the same time; in the process of slowly withdrawing the drill rod, the round holes in the middle of the gaskets at the two sides can effectively ensure the centering of the steel strand, so that the whole expanded head anchor rope is ensured to belong to an axle center component to the greatest extent, and the drawing force of the anchor rope is improved;
(6) And (3) device recovery: after the drill rod is slowly pulled out, the hollow gaskets on the two sides provided with the gears are disassembled, cleaned and maintained so as to be reused.
The working principle of the invention is as follows: when the drill rod rotates to drive the device to rotate to form a hole, and when the hole is required to be reamed, the controller, the control line and the electric device jointly control the gear to reach the specified size, so that the diameters of the drilling hole and the hole are required to meet the design requirement, the hole is formed once, the mechanical rotary hole-enlarging is adopted to replace the high-pressure rotary-spraying hole-enlarging, the diameter of the high-pressure rotary-spraying enlarged head anchor cable in the drilling hole and the hole-enlarging is accurately controlled, the waste of cement slurry caused by overhigh pressure in the hole when the cement slurry is sprayed at high pressure is avoided, and the problem that the anchor cable cannot be centered in the construction process of the high-pressure rotary-spraying enlarged head anchor cable is effectively solved.
Compared with the prior art, the invention has the advantages that firstly, the reaming diameter is more in accordance with the design requirement, the round holes are effectively utilized to smoothly center the steel stranded wires, and the pulling resistance of the anchor cable is improved; secondly, the hole is formed at one time through the control device, so that time and labor are saved; thirdly, use with the drill bit cooperation, carry out grout dado in the work progress, effectively prevent to collapse the hole, its overall structure and simple process, convenient operation has improved the efficiency of construction, has shortened the time limit for a project, has improved construction process, has reduced the waste of grout, practices thrift grouting material, reduces the cost, and economic benefits is high, moreover after the construction is accomplished, can carry out whole device through the drilling rod, realizes cyclic utilization.
Drawings
Fig. 1 is a front view of a main structure of the enlarged head anchor line construction device according to the present invention.
Fig. 2 is a side view of the enlarged head anchor line construction apparatus of the present invention.
Fig. 3 is a detail of a tooth in the gear according to the present invention, wherein (3) has a size of 150mm, (2) has a size of 120mm, and (1) has a size of 30mm.
Fig. 4 is a control line drawing according to the present invention.
Fig. 5 is a connection structure diagram of the drill rod and a centering schematic diagram of a steel strand.
Detailed Description
The invention will be further elucidated with reference to the drawings, examples.
Example 1:
the main structure of the enlarged footing anchor rope construction device according to this embodiment includes: the two-side hollow gasket 1, the gear 2, the control line 3, the round hole 4, the connecting strip 5, the cutting knife 6, the drill rod 7, the drill bit 9, the buckle 10, the controller 11, the electric device 12 and the steel strand 13; the two-side hollow gaskets 1 are in threaded connection with the gear 2 through connecting strips 5, a round hole 4 is formed in the middle of each of the two-side hollow gaskets 1, a control wire 3 is wound on a drill rod 7 and rotates along with the drill rod 7, the control wire 3 is connected with a controller 11, the controller 11 transmits an electric signal to an electric device 12 through the control wire 3, the electric device 12 consists of a miniature motor, a control mechanism and an electric part, the electric device 12 receives the electric signal and converts the electric signal into power to control the gear 2 to start stretching, and when the gear 2 reaches a set size, the electric device 12 stops operating; the cutting knife 6 is evenly laid on the hollow gaskets 1 in both sides, is used for cutting the soil body at the drilling and is suddenly advanced in-process, and the inner wall of round hole 4 and the outside of drilling rod 7 all are equipped with buckle 10, fixed connection between buckle and the buckle 10 in the drilling rod 7 outside of round hole 4 inner wall, and drill bit 9 sets up the tip at drilling rod 7.
Further, the outer side of the control wire 3 is sleeved with a Kevlar material and fixed on the drill rod 7 by using a binding belt 8.
Further, the diameter of the hollow gaskets 1 at the two sides is 150mm, and the hollow gaskets are made of hard alloy.
Furthermore, the gear 2 is a telescopic gear, the size and the diameter of the whole component after the gear is completely stretched are 450mm, the material is hard alloy, and the gear is contracted in the hollow gaskets 1 at the two sides when the gear is not stretched, so that the functions of drilling and reaming are realized.
Further, the size of the round hole 4 is determined according to the diameter of the anchor cable to be constructed and the size of the drill rod 7, and is used for controlling the centering of the anchor cable.
Further, the cutting blade 6 is made of hard alloy, the dimension of the cutting blade 6 in the vertical drilling direction is the radius of the hollow gaskets 1 at two sides minus the radius of the round hole 4, and the dimension in the drilling direction is half of the dimension in the vertical direction.
The working principle of the embodiment is as follows: when the drill rod 7 rotates to drive the device to rotate for hole forming and hole expansion is needed, the controller 11, the control line 3 and the electric device 12 jointly control the gear 2 to stretch out and draw back to reach the specified size, so that the diameter of the drilled hole and the diameter of the hole expansion meet the design requirement, the hole is formed once, the mechanical rotary hole expansion is adopted to replace the high-pressure rotary hole expansion, the diameter of the high-pressure rotary hole expansion head anchor cable in the drilled hole and the hole expansion is accurately controlled, the waste of cement slurry caused by overhigh pressure in the hole during high-pressure cement slurry injection is avoided, and the problem that the anchor cable cannot be centered during the construction process of the high-pressure rotary hole expansion head anchor cable is effectively solved.
Example 2:
the device described in embodiment 1 is used for anchor cable construction in water-rich sand areas (aperture 180mm, reaming diameter 450mm, hole depth 20m or so), and specifically comprises the following steps:
(1) Drilling and positioning: determining hole sites according to the elevation and horizontal spacing of the design requirements of the excavated foundation pit according to the local geological conditions, and marking;
(2) Positioning a drilling machine: according to the actual needs, a drilling machine is selected, the hollow gaskets 1 on the two sides provided with the gear 2 are connected to the drill rod 7 through the buckles 10, the drill bit 9 is arranged at the end part of the drill rod 7, the hole site is aligned, the angle is adjusted, and the qualified installation before drilling is ensured;
(3) Drilling: the gear 2 is utilized to carry out mechanical rotation pore forming, a control wire 3 sleeved with a Kevlar material is wound on a drill rod 7 and is connected with an external controller 11, the controller 11 transmits an electric signal to an electric device 12 through the control wire 3, the electric device 12 receives the electric signal and converts the electric signal into power to control the gear 2 (1) to be fully stretched out for 30mm through a control mechanism, at the moment, 150mm of hollow gaskets 1 on two sides are added, the pore diameter is 180mm, a drilling machine drills the pore forming, meanwhile, a drill bit 9 sprays cement paste to protect walls, and the cement paste can also carry out waste soil residues, so that the error of the pore diameter and the design requirement can be ensured to be small;
(4) Reaming: after the reaming position is reached, the controller 11 transmits an electric signal to the electric device 12 through the control wire 3, the electric device 12 receives the electric signal and converts the electric signal into the power control gears 2 (2) and (3) through the control mechanism to reach the reaming diameter of 450mm, the rotary drilling reaming is continued, meanwhile, cement slurry is sprayed to protect the wall, the excavation depth is controlled within the specified reaming length of 0.5m, after the excavation is finished, the controller 11 transmits the electric signal to the electric device 12 through the control wire 3, the electric device 12 receives the electric signal and converts the electric signal into the power control gears (1), (2) and (3) through the control mechanism to shrink, then the drill rod 7 is pulled out, and slag soil which cannot be timely discharged is carried out in the process of pulling out the drill rod 7 by the way;
(5) Anchor cable (grouting) is placed: placing the anchor cable on the drill bit 9, enabling the steel stranded wires 13 to pass through the round holes 4 in the middle of the gaskets 1 at two sides, enabling the steel stranded wires 13 to be effectively concentrated in the middle of the holes, slowly extracting the drill rod 7 after the anchor cable reaches a designated position, and pouring cement paste at the same time; in the process of slowly withdrawing the drill rod 7, the round holes 4 in the middle of the gaskets 1 at two sides can effectively ensure centering of the steel stranded wires 13, so that the whole expanded head anchor rope is ensured to belong to an axle center component to the greatest extent, and the drawing force of the anchor rope is improved;
(6) And (3) device recovery: after the drill rod 7 is slowly pulled out, the hollow gaskets 1 on the two sides, on which the gear 2 is mounted, are disassembled, cleaned and maintained for reuse.
The components or control modes not disclosed in this embodiment are all of the prior art.
Claims (5)
1. The construction method of the enlarged footing anchor rope construction device is characterized by comprising the following steps of:
(1) Drilling and positioning: determining hole sites according to the elevation and horizontal spacing of the design requirements of the excavated foundation pit according to the local geological conditions, and marking;
(2) Positioning a drilling machine: selecting a drilling machine according to actual needs, connecting the hollow gaskets on two sides provided with the gears on a drill rod through buckles, installing a drill bit at the end part of the drill rod, aligning to a hole site, adjusting an angle, and ensuring that the installation is qualified before drilling;
(3) Drilling: the gear is utilized to carry out mechanical rotation pore forming, a control wire sleeved with a Kevlar material is wound on a drill rod and connected with an external controller, the controller transmits an electric signal to an electric device through the control wire, the electric device receives the electric signal and converts the electric signal into power to control the gear to stretch out for 30mm, 150mm of hollow gaskets on two sides are added at the moment, the aperture is 180mm, a drilling machine drills into the pore forming, meanwhile, a drill bit sprays cement paste to protect walls, and the cement paste can also bring out waste soil residues, so that the aperture and design requirement errors are small;
(4) Reaming: after the reaming position is reached, the controller transmits an electric signal to the electric device through a control wire, the electric device receives the electric signal and converts the electric signal into a power control gear through a control mechanism to reach the reaming diameter of 450mm, the electric device continuously rotates to drill and ream, meanwhile, cement slurry is sprayed to protect walls, the reaming depth is controlled within the specified reaming length of 0.5m, after the excavation is finished, the controller transmits the electric signal to the electric device through the control wire, the electric device receives the electric signal and converts the electric signal into the power control gear through the control mechanism to shrink, then the drill rod is pulled out, and slag soil which cannot be timely discharged is carried out in the process of pulling out the drill rod;
(5) Placing an anchor cable: placing the anchor cable on the drill bit, enabling the steel stranded wires to pass through round holes in the middle of the gaskets at two sides, enabling the steel stranded wires to be effectively concentrated in the middle of the holes, slowly extracting the drill rod after the anchor cable reaches a designated position, and pouring cement paste at the same time; in the process of slowly withdrawing the drill rod, the round holes in the middle of the gaskets at the two sides can effectively ensure the centering of the steel strand, so that the whole expanded head anchor rope is ensured to belong to an axle center component to the greatest extent, and the drawing force of the anchor rope is improved;
(6) And (3) device recovery: after the drill rod is slowly pulled out, the hollow gaskets on the two sides provided with the gears are disassembled, cleaned and maintained so as to be reused;
the enlarged footing anchor rope construction device comprises two hollow gaskets, gears, control lines, round holes, connecting strips, cutting knives, drill rods, drill bits, buckles, a controller, an electric device and steel stranded wires; the two sides of the hollow gaskets are in threaded connection with the gear through connecting strips, a round hole is formed in the middle of each of the two sides of the hollow gaskets, a control wire is wound on the drill rod and rotates along with the drill rod, the controller is connected with the electric device through the control wire, the controller transmits an electric signal to the electric device through the control wire, the electric device receives the electric signal and converts the electric signal into power to control the gear to start stretching, and when the gear reaches a set size, the electric device stops operating; the cutting knife is evenly laid on the hollow gaskets on both sides, is used for cutting the soil body at the drilling and is suddenly advanced in-process, and the inner wall of round hole and the outside of drilling rod all are equipped with the buckle, fixed connection between the buckle of round hole inner wall and the buckle in the drilling rod outside, and the drill bit setting is at the tip of drilling rod.
2. The construction method of the enlarged footing anchor line construction apparatus of claim 1 wherein the diameter of the two-sided hollow shims is 150mm.
3. The construction method of the enlarged footing anchor rope construction device according to claim 1, wherein the gear is a telescopic gear, the diameter of the whole telescopic gear after the whole telescopic gear is fully stretched is 450mm, and the gear is contracted in the hollow gaskets at two sides when the gear is not stretched, so that the functions of drilling and reaming are achieved.
4. The construction method of the enlarged footing anchor line construction apparatus of claim 1, wherein the size of the circular hole is determined according to the diameter of the anchor line to be constructed and the size of the drill pipe, for controlling the centering of the anchor line.
5. The construction method of the enlarged footing anchor line construction apparatus of claim 1 wherein the length of the cutter in the direction perpendicular to the drilling direction is the radius of the hollow washer on both sides minus the radius of the round hole, and the length in the drilling direction is half the length in the perpendicular direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210018291.1A CN114215055B (en) | 2022-01-07 | 2022-01-07 | Construction method of enlarged head anchor rope construction device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210018291.1A CN114215055B (en) | 2022-01-07 | 2022-01-07 | Construction method of enlarged head anchor rope construction device |
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| CN114215055B true CN114215055B (en) | 2023-05-09 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001140253A (en) * | 1999-11-15 | 2001-05-22 | Koken Boring Mach Co Ltd | Ground improvement type anchor method and boring machine used in common for ground improvement |
| KR100919277B1 (en) * | 2008-11-11 | 2009-09-30 | 박시우 | Fixing means using the nail anchor and method thereof |
| CN102505919A (en) * | 2011-12-29 | 2012-06-20 | 山河智能装备股份有限公司 | Bearizing drilling bit |
| CN109667542A (en) * | 2018-12-28 | 2019-04-23 | 杭州昂创科技有限公司 | The discontinuous pipe-following drilling anchor cable construction method of multistage subsection in broken formation |
| CN110714463A (en) * | 2019-11-11 | 2020-01-21 | 中国建筑西南勘察设计研究院有限公司 | Mechanical expanding anti-floating anchor rod and construction method thereof |
| CN111997522A (en) * | 2020-08-31 | 2020-11-27 | 中启胶建集团有限公司 | Drilling device penetrating through underground deep-buried waste pipeline and cast-in-place pile construction method |
| CN214993805U (en) * | 2021-03-10 | 2021-12-03 | 江苏富路建设有限公司 | Expanding type enlarged footing pressure-bearing plate and anchor rod |
| CN216892387U (en) * | 2021-12-27 | 2022-07-05 | 湖北天利建筑技术有限责任公司 | Distributed bottom-expanding anchor rod device |
-
2022
- 2022-01-07 CN CN202210018291.1A patent/CN114215055B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001140253A (en) * | 1999-11-15 | 2001-05-22 | Koken Boring Mach Co Ltd | Ground improvement type anchor method and boring machine used in common for ground improvement |
| KR100919277B1 (en) * | 2008-11-11 | 2009-09-30 | 박시우 | Fixing means using the nail anchor and method thereof |
| CN102505919A (en) * | 2011-12-29 | 2012-06-20 | 山河智能装备股份有限公司 | Bearizing drilling bit |
| CN109667542A (en) * | 2018-12-28 | 2019-04-23 | 杭州昂创科技有限公司 | The discontinuous pipe-following drilling anchor cable construction method of multistage subsection in broken formation |
| CN110714463A (en) * | 2019-11-11 | 2020-01-21 | 中国建筑西南勘察设计研究院有限公司 | Mechanical expanding anti-floating anchor rod and construction method thereof |
| CN111997522A (en) * | 2020-08-31 | 2020-11-27 | 中启胶建集团有限公司 | Drilling device penetrating through underground deep-buried waste pipeline and cast-in-place pile construction method |
| CN214993805U (en) * | 2021-03-10 | 2021-12-03 | 江苏富路建设有限公司 | Expanding type enlarged footing pressure-bearing plate and anchor rod |
| CN216892387U (en) * | 2021-12-27 | 2022-07-05 | 湖北天利建筑技术有限责任公司 | Distributed bottom-expanding anchor rod device |
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| CN114215055A (en) | 2022-03-22 |
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