CN111119182B - Centering system of recyclable reinforcement cage and construction method thereof - Google Patents
Centering system of recyclable reinforcement cage and construction method thereof Download PDFInfo
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- CN111119182B CN111119182B CN202010031964.8A CN202010031964A CN111119182B CN 111119182 B CN111119182 B CN 111119182B CN 202010031964 A CN202010031964 A CN 202010031964A CN 111119182 B CN111119182 B CN 111119182B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/02—Caissons able to be floated on water and to be lowered into water in situ
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
A centering system of a recyclable reinforcement cage and a construction method thereof comprise a buoy, a buoy positioning device and a reinforcement cage positioning device; the middle part of the top surface of the buoy is provided with a positioning ring; the buoy positioning device is arranged below the buoy and comprises a positioning ring, a positioning rope and a buoy control rope; the positioning ring is arranged in the reinforcement cage, and the center of the positioning ring is superposed with the center shaft of the reinforcement cage; the positioning rope pulls the positioning ring and the reinforcement cage; one end of the buoy control rope is connected to the center of the bottom of the buoy, and the other end of the buoy control rope penetrates through the positioning ring and is connected with the lifting rib above the reinforcement cage; the steel reinforcement cage positioning device is arranged above the buoy and comprises a cross brace and a plumb bob; the center of the cross brace is superposed with the center of the pile hole, and the four end parts of the cross brace are connected with the upper edge of the pile casing in the pile hole; the plumb bob is hung below the center of the cross brace through the plumb line. The invention aims to solve the technical problems of complex construction operation, low fineness degree, incapability of changing along with construction conditions and incapability of recycling existing in the traditional centering system.
Description
Technical Field
The invention belongs to the technical field of construction of constructional engineering, and particularly relates to a centering system of a recyclable reinforcement cage and a construction method of the centering system.
Background
In the construction process of the slurry wall protection cast-in-place pile, the deviation of the cast-in-place pile is always a main control project for checking whether a pile foundation is qualified, and after the pile casing is centered, the centering problem of a reinforcement cage is always one of main reasons for the deviation of the cast-in-place pile. At present, with the wide use of the slurry wall protection cast-in-place pile, the traditional construction method has the defects of inaccurate alignment, frequent occurrence of cast-in-place pile rework events and great loss caused by the rework treatment of the cast-in-place pile, so that the improvement of the cast-in-place pile is needed.
Disclosure of Invention
The invention aims to provide a recyclable steel reinforcement cage centering system and a construction method thereof, and aims to solve the technical problems of complex construction operation, low fineness, poor capability of coping with changes and unrecyclability of the traditional centering system.
In order to achieve the purpose, the invention adopts the following technical scheme.
A centering system of a recyclable reinforcement cage is used for positioning the reinforcement cage in a pile foundation; comprises a buoy, a buoy positioning device and a reinforcement cage positioning device; the middle part of the top surface of the buoy is provided with a positioning ring; the buoy positioning device is arranged below the buoy and comprises a positioning ring, a positioning rope and a buoy control rope; the positioning ring is arranged in the reinforcement cage to be positioned, and the center of the positioning ring is superposed with the center shaft of the reinforcement cage; the positioning ropes are connected to the positioning rings at intervals and pull the positioning rings and the reinforcement cage; one end of the buoy control rope is connected to the center of the bottom of the buoy, and the other end of the buoy control rope penetrates through the positioning ring and is connected with the lifting rib above the reinforcement cage; the steel reinforcement cage positioning device is arranged above the buoy and comprises a cross brace and a plumb bob; the center of the cross brace is superposed with the center of the pile hole, and four end parts of the cross brace are respectively connected with the upper edge of the pile casing in the pile hole; the plumb bob is hung below the center of the cross support through the plumb line, and the plumb bob is located above the buoy.
Preferably, the length of the buoy control rope is at least 2000mm greater than that of a lifting rib above the steel reinforcement cage; the positioning ring is arranged at the upper part of the reinforcement cage; when the steel reinforcement cage is hoisted into the pile hole, the positioning ring is positioned below the mud surface in the pile hole.
Preferably, the buoy is conical, and is made of wood or polystyrene foam or plastic bottles.
Preferably, a buoy lead is connected to one side of the top of the buoy.
Preferably, the retaining ring has a diameter of no more than 25 mm.
Preferably, the cross brace is made of a rope or a rod, and the end of the cross brace is detachably connected with the casing through a connecting piece.
Preferably, the positioning ring is a metal ring fixed on the top of the buoy, and the diameter of the positioning ring is 0.01H +100 mm; h is the pile length of the pile foundation.
A construction method of a centering system comprises the following steps.
Step one, installing a buoy positioning device: connecting one end of a positioning rope with a positioning ring, and connecting the other end of the positioning rope with a main rib of the reinforcement cage, so that the center of the positioning ring is positioned on a center shaft of the reinforcement cage; and then one end of the buoy control rope is connected with the center of the bottom surface of the buoy, and the other end of the buoy control rope penetrates through the positioning ring and is connected to a lifting rib of the reinforcement cage.
Step two, the steel reinforcement cage provided with the buoy positioning device is transferred to a pile hole of the slurry retaining wall cast-in-place pile by using lifting equipment: the reinforcement cage is put in from top to bottom from the orifice to the required installation position.
And step three, positioning the center of the pile hole.
And step four, arranging the reinforcement cage positioning device at the upper edge of the pile casing to enable the center of the cross support to coincide with the center of the pile hole.
Step five, centering and debugging of the reinforcement cage: the length of the buoy control rope is adjusted, so that the buoy control rope is in a tight state when the buoy floats on the surface of the slurry, and the buoy control rope is fixed, so that the buoy is stable on the surface of the slurry and does not rotate any more.
Step six, centering detection of the reinforcement cage: and (4) putting the plumb down, and observing whether the tip of the plumb is in the range of the positioning ring on the buoy or not after the plumb is stabilized.
And seventhly, if the tip of the plumb is located in the range of the positioning ring, the centering of the reinforcement cage is finished, and the centering system is recovered.
Preferably, if the tip of the plumb bob is out of the range of the positioning ring on the buoy in the sixth step, the position of the reinforcement cage is adjusted until the tip of the plumb bob is in the range of the positioning ring on the buoy.
Preferably, when the centering system is recovered in the seventh step, the cross brace fixed on the upper edge of the casing is firstly removed, the buoy control rope is loosened, the buoy is taken out, and the buoy control rope are recovered.
Compared with the prior art, the invention has the following characteristics and beneficial effects.
1. The centering system of the recyclable reinforcement cage adopts the design ideas of tool, recyclability, convenient use and fine centering, and is particularly suitable for centering adjustment of reinforcement cages hoisted by various pile diameters and various lengths of hoisting bars.
2. The centering system of the reinforcement cage has a simple structure, the connection among the buoy, the buoy positioning device and the reinforcement cage positioning device is simple, and the connection modes are detachable; therefore, the invention has the characteristics of simple operation, recoverability, field adjustment according to engineering conditions and the like.
3. In the invention, a reinforcement cage positioning device is arranged at the top of a protective cylinder, and a plumb bob is hung at a center shaft of the protective cylinder; meanwhile, the middle part of the top surface of the buoy arranged at the position of the middle shaft of the reinforcement cage is provided with a positioning ring, and the diameter of the positioning ring 3 is 0.01H +100 mm; the centering of the reinforcement cage is controlled by adjusting the centering of the plumb bob and the positioning ring; the invention has the advantages of simple operation, high centering efficiency and high centering fineness.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the steel reinforcement cage centering system of the present invention.
Fig. 2 is a schematic structural view of the centering system of the present invention.
Fig. 3 is a schematic view of the structure of the connector of the present invention.
Reference numerals: the device comprises a steel reinforcement cage, a buoy, a 3-positioning ring, a 4-positioning ring, a 5-positioning rope, a 6-buoy control rope, a 7-cross brace, an 8-plumb hammer, a 9-plumb line, a 10-buoy lead, an 11-protective cylinder and a 12-connecting piece.
Detailed Description
As shown in fig. 1-3, the centering system of the recyclable reinforcement cage is used for positioning the reinforcement cage 1 in a pile foundation; comprises a buoy 2, a buoy positioning device and a reinforcement cage positioning device; the middle part of the top surface of the buoy 2 is provided with a positioning ring 3; the buoy positioning device is arranged below the buoy 2 and comprises a positioning ring 4, a positioning rope 5 and a buoy control rope 6; the positioning ring 4 is arranged in the reinforcement cage 1 to be positioned, and the center of the positioning ring 4 is superposed with the middle shaft of the reinforcement cage 1; at least two positioning ropes 5 are connected to the positioning ring 4 at intervals, and the positioning ring 4 and the reinforcement cage 1 are pulled by the positioning ropes 5; one end of the buoy control rope 6 is connected to the center of the bottom of the buoy 2, and the other end of the buoy control rope 6 penetrates through the positioning ring 4 and is connected with a lifting rib above the reinforcement cage 1; the steel reinforcement cage positioning device is arranged above the buoy 2 and comprises a cross brace 7 and a plumb bob 8; the center of the cross brace 7 is superposed with the center of the pile hole, and four end parts of the cross brace 7 are respectively connected with the upper edge of the pile hole inner casing 11; the plumb 8 is hung below the center of the cross brace 7 through a plumb line 9, and the plumb 8 is positioned above the buoy 2.
In this embodiment, the length of the buoy control rope 6 is at least 2000mm greater than that of a lifting rib on the reinforcement cage 1; when the steel reinforcement cage 1 is lowered, the buoy control rope 6 is lowered along with the lifting rib; the lowering process of the buoy control rope 6 comprises the following steps: the upper end of the buoy control rope 6 is connected to the lifting rib, when the steel reinforcement cage 1 is lowered, the buoy control rope 6 connected with the lifting rib is unfastened when the lifting rib is about 1m away from the orifice, the steel reinforcement cage 1 is continuously lowered until the bottom of a lifting ring at the bottom of the lifting rib is flush with the protective cylinder, then the buoy control rope 6 is tensioned to enable the buoy 2 to expose the mud surface in the pile hole, and then centering is carried out; the holding ring 4 sets up in the upper portion of steel reinforcement cage 1, and when steel reinforcement cage 1 hoisted to the stake downthehole, the holding ring 4 was located the downthehole position below the mud face of stake.
In this embodiment, the buoy 2 is conical, and the buoy 2 is made of wood, polystyrene foam or plastic bottles.
In this embodiment, a float lead 10 is connected to one side of the top of the float 2.
In this embodiment, the diameter of the positioning ring 4 is not more than 25 mm.
In this embodiment, the cross brace 7 is made of a rope, and an end of the cross brace 7 is detachably connected to the casing 11 through a connecting member 12.
Of course, in other embodiments, the cross brace 7 may also be made of a rod member such as a steel bar or a steel pipe.
In this embodiment, the positioning ring 3 is a metal ring fixed on the top of the buoy 2, and the diameter of the positioning ring 3 is 0.01H +100 mm; h is the pile length of the pile foundation.
In this embodiment, adopt nylon wire rope as connecting elements, but the fixed position circle 3 of size regulation is fixed at the top of buoy 2, and buoy control rope 6 passes holding ring 4, and through the tail end of adjusting buoy control rope 6, make buoy 2 correspond different mud face height, steel reinforcement cage positioner is connected with protecting a section of thick bamboo 11, convenient dismantlement to it is recoverable to realize. The steel reinforcement cage 1 provided with the buoy positioning device can be transferred to the hole of the slurry retaining wall cast-in-place pile by using hoisting equipment such as a crane and the like, and is placed from top to bottom from the hole opening to the position required to be installed.
In this embodiment, the positioning rope 5 is bound and connected with the reinforcement cage 1.
The construction method of the centering system comprises the following steps.
Step one, installing a buoy positioning device: one end of a positioning rope 5 is connected with a positioning ring 4, the other end of the positioning rope 5 is connected with a main rib of the reinforcement cage 1, and the center of the positioning ring 4 is positioned on a center shaft of the reinforcement cage 1; and then one end of the buoy control rope 6 is connected with the center of the bottom surface of the buoy 2, and the other end of the buoy control rope 6 passes through the positioning ring 4 and is connected to a lifting rib of the reinforcement cage 1.
Step two, the steel reinforcement cage 1 provided with the buoy positioning device is transferred to a pile hole of the slurry retaining wall cast-in-place pile by using lifting equipment: the reinforcement cage 1 is put in from top to bottom from the orifice to the required installation position.
And step three, positioning the center of the pile hole.
And step four, arranging the reinforcement cage positioning device at the upper edge of the pile casing 11, so that the center of the cross brace 7 is coincided with the center of the pile hole.
Step five, centering and debugging of the reinforcement cage 1: the length of the buoy control rope 6 is adjusted, so that the buoy control rope 6 is in a tight state when the buoy 2 floats on the surface of the mud, the buoy control rope 6 is fixed, and the buoy 2 is stable on the surface of the mud and does not rotate any more.
Step six, centering detection of the reinforcement cage 1: and (4) lowering the plumb 8, and observing whether the tip of the plumb 8 is positioned in the range of the positioning ring 3 on the buoy 2 or not after the plumb 8 is stabilized.
And seventhly, if the tip of the plumb bob 8 is located in the range of the positioning ring 3, after centering of the reinforcement cage 1 is finished, recovering the centering system.
In this embodiment, step one location rope 5 is provided with two, connects respectively in the offside of holding ring 4, and the other end of location rope 5 is connected with the main muscle ligature of steel reinforcement cage 1.
Of course, in other embodiments, three, four or five positioning ropes 5 may be provided in step one, and the spacing between adjacent positioning ropes 5 is equal.
In this embodiment, if the tip of the plumb 8 is out of the range of the locating ring 3 on the buoy 2 in the sixth step, the position of the reinforcement cage 1 is adjusted until the tip of the plumb 8 is within the range of the locating ring 3 on the buoy 2.
In this embodiment, when the centering system is recovered in step seven, the cross brace 7 fixed to the upper edge of the casing 11 is removed, the buoy control rope 6 is loosened, the buoy 2 is pulled through the buoy lead 10 until the buoy 2 rope is pulled out of the pile opening, and the buoy 2 and the buoy control rope 6 are recovered.
In this embodiment, the connecting member 12 is in the shape of an inverted U and is formed by bending a steel bar; the end part of the cross brace 7 is connected with a connecting piece 12; the connecting piece 12 is clamped on the top of the protective sleeve 11.
The above embodiments are not intended to be exhaustive or to limit the invention to other embodiments, and the above embodiments are intended to illustrate the invention and not to limit the scope of the invention, and all applications that can be modified from the invention are within the scope of the invention.
Claims (8)
1. A centering system of a recyclable reinforcement cage is used for positioning a reinforcement cage (1) in a pile foundation; the method is characterized in that: comprises a buoy (2), a buoy positioning device and a reinforcement cage positioning device; a positioning ring (3) is arranged in the middle of the top surface of the buoy (2); the buoy positioning device is arranged below the buoy (2) and comprises a positioning ring (4), a positioning rope (5) and a buoy control rope (6); the positioning ring (4) is arranged in the reinforcement cage (1) to be positioned, and the center of the positioning ring (4) is superposed with the center shaft of the reinforcement cage (1); at least two positioning ropes (5) are connected to the positioning ring (4) at intervals, and the positioning ring (4) and the reinforcement cage (1) are pulled by the positioning ropes (5); one end of the buoy control rope (6) is connected to the center of the bottom of the buoy (2), and the other end of the buoy control rope (6) penetrates through the positioning ring (4) and is connected with a lifting rib above the reinforcement cage (1); the reinforcement cage positioning device is arranged above the buoy (2) and comprises a cross brace (7) and a plumb bob (8); the center of the cross brace (7) is superposed with the center of the pile hole, and four end parts of the cross brace (7) are respectively connected with the upper edge of the pile hole inner casing (11); the plumb bob (8) is hung below the center of the cross brace (7) through a plumb line (9), and the plumb bob (8) is positioned above the buoy (2); the length of the buoy control rope (6) is at least 2000mm greater than that of a lifting rib above the reinforcement cage (1); the positioning ring (4) is arranged at the upper part of the reinforcement cage (1); when the reinforcement cage (1) is hoisted into the pile hole, the positioning ring (4) is positioned at the position below the mud surface in the pile hole; one side of the top of the buoy (2) is connected with a buoy lead (10).
2. The centering system for a reusable reinforcement cage of claim 1, wherein: the buoy (2) is conical, and the buoy (2) is made of wood or polystyrene foam or plastic bottles.
3. The centering system for a reusable reinforcement cage of claim 1, wherein: the diameter of the positioning ring (4) is not more than 25 mm.
4. The centering system for a reusable reinforcement cage of claim 1, wherein: the cross brace (7) is made of a rope or a rod piece, and the end part of the cross brace (7) is detachably connected with the protective cylinder (11) through a connecting piece (12).
5. The centering system for a reusable reinforcement cage of claim 1, wherein: the positioning ring (3) is a metal ring fixed on the top of the buoy (2), and the diameter of the positioning ring (3) is 0.01H +100 mm; h is the pile length of the pile foundation.
6. A construction method of the centering system as claimed in any one of claims 1 to 5, characterized by comprising the steps of:
step one, installing a buoy positioning device: one end of a positioning rope (5) is connected with the positioning ring (4), the other end of the positioning rope (5) is connected with a main rib of the reinforcement cage (1), and the center of the positioning ring (4) is positioned on a center shaft of the reinforcement cage (1); then one end of the buoy control rope (6) is connected with the center of the bottom surface of the buoy (2), and the other end of the buoy control rope (6) penetrates through the positioning ring (4) and is connected to a lifting rib of the reinforcement cage (1);
step two, transferring the reinforcement cage (1) provided with the buoy positioning device into a pile hole of the slurry retaining wall cast-in-place pile by using lifting equipment: the reinforcement cage (1) is put from top to bottom from the orifice to the required installation position;
thirdly, positioning the center of the pile hole;
fourthly, arranging a reinforcement cage positioning device at the upper edge of the pile casing (11) to enable the center of the cross brace (7) to coincide with the center of the pile hole;
step five, centering and debugging of the reinforcement cage (1): the length of the buoy control rope (6) is adjusted, so that the buoy control rope (6) is in a tight state when the buoy (2) floats on the surface of the slurry, the buoy control rope (6) is fixed, and the buoy (2) is stable on the surface of the slurry and does not rotate any more;
step six, centering detection of the reinforcement cage (1): the plumb bob (8) is put down, and after the plumb bob (8) is stabilized, whether the tip of the plumb bob (8) is positioned in the range of the positioning ring (3) on the buoy (2) or not is observed;
and seventhly, if the tip of the plumb bob (8) is located in the range of the positioning ring (3), the centering of the reinforcement cage (1) is finished, and the centering system is recovered.
7. The construction method of the centering system as claimed in claim 6, wherein: and if the tip of the plumb bob (8) is out of the range of the positioning ring (3) on the buoy (2) in the sixth step, adjusting the position of the reinforcement cage (1) until the tip of the plumb bob (8) is in the range of the positioning ring (3) on the buoy (2).
8. The construction method of the centering system as claimed in claim 6, wherein: and seventhly, when the centering system is recovered, firstly, the cross brace (7) fixed on the upper edge of the protective sleeve (11) is detached, the buoy control rope (6) is loosened, the buoy (2) is taken out, and the buoy (2) and the buoy control rope (6) are recovered.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010031964.8A CN111119182B (en) | 2020-01-13 | 2020-01-13 | Centering system of recyclable reinforcement cage and construction method thereof |
| PCT/CN2020/081980 WO2021142941A1 (en) | 2020-01-13 | 2020-03-30 | Recyclable rebar cage centralizing system and construction method therefor |
| DE212020000478.1U DE212020000478U1 (en) | 2020-01-13 | 2020-03-30 | A recyclable centering system for a reinforcement cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010031964.8A CN111119182B (en) | 2020-01-13 | 2020-01-13 | Centering system of recyclable reinforcement cage and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111119182A CN111119182A (en) | 2020-05-08 |
| CN111119182B true CN111119182B (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010031964.8A Active CN111119182B (en) | 2020-01-13 | 2020-01-13 | Centering system of recyclable reinforcement cage and construction method thereof |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN111119182B (en) |
| DE (1) | DE212020000478U1 (en) |
| WO (1) | WO2021142941A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962500A (en) * | 2020-07-20 | 2020-11-20 | 中交路桥建设有限公司 | Accurate positioning method for lowering pile foundation reinforcement cage |
| CN112112593A (en) * | 2020-09-28 | 2020-12-22 | 中国十七冶集团有限公司 | Method for processing percussion drill hole-forming buried drill |
| CN112359725A (en) * | 2020-11-20 | 2021-02-12 | 中国十七冶集团有限公司 | Pile position calibration device used in bridge engineering pile foundation construction |
| CN112593555B (en) * | 2020-12-24 | 2022-03-25 | 山东九强集团有限公司 | Centering and positioning device for center of bridge pile foundation reinforcement cage |
| CN113047270A (en) * | 2021-03-31 | 2021-06-29 | 中国十七冶集团有限公司 | Construction method for installing and positioning pile foundation reinforcement cage |
| CN113389202B (en) * | 2021-07-01 | 2022-07-05 | 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) | Device and method for preventing aligning deviation of pile foundation engineering reinforcement cage |
| CN114164828B (en) * | 2021-09-17 | 2023-01-03 | 山东源基建设工程有限公司 | Pile casing pulling-up auxiliary device for concrete pouring pile |
| CN117127610B (en) * | 2023-10-26 | 2024-01-23 | 中交第一航务工程局有限公司 | Pile foundation reinforcement cage lowering deviation rectifying and positioning device and construction process |
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| CN102767176A (en) * | 2012-07-25 | 2012-11-07 | 中建三局第二建设工程有限责任公司 | Hoisting positioning construction method of pile foundation steel reinforcement cage |
| CN206512705U (en) * | 2017-02-18 | 2017-09-22 | 中铁华铁工程设计集团有限公司 | A kind of cursory method underwater positioning device of steel reinforcement cage |
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| CN107724391A (en) * | 2017-10-20 | 2018-02-23 | 中铁上海工程局集团第五工程有限公司 | A kind of pile foundation steel bar cage transfers centralized positioning detector |
| CN207314328U (en) * | 2017-07-28 | 2018-05-04 | 中建筑港集团有限公司 | A kind of borehole filling pile cage of reinforcement centralising device |
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| JPH09291530A (en) * | 1996-04-26 | 1997-11-11 | Maeda Corp | Method for erecting column |
| CN109094739B (en) * | 2018-07-26 | 2023-06-20 | 国家海洋局第一海洋研究所 | R-shape anchor system and method suitable for hanging and recovering during buoy wharf test |
| CN209227515U (en) * | 2018-10-10 | 2019-08-09 | 中建八局第二建设有限公司 | A kind of float type borehole filling pile cage of reinforcement positioning tool |
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2020
- 2020-01-13 CN CN202010031964.8A patent/CN111119182B/en active Active
- 2020-03-30 DE DE212020000478.1U patent/DE212020000478U1/en active Active
- 2020-03-30 WO PCT/CN2020/081980 patent/WO2021142941A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767176A (en) * | 2012-07-25 | 2012-11-07 | 中建三局第二建设工程有限责任公司 | Hoisting positioning construction method of pile foundation steel reinforcement cage |
| CN206512705U (en) * | 2017-02-18 | 2017-09-22 | 中铁华铁工程设计集团有限公司 | A kind of cursory method underwater positioning device of steel reinforcement cage |
| CN207314328U (en) * | 2017-07-28 | 2018-05-04 | 中建筑港集团有限公司 | A kind of borehole filling pile cage of reinforcement centralising device |
| CN107503353A (en) * | 2017-10-10 | 2017-12-22 | 山东省路桥集团有限公司 | Pile foundation steel bar cage off normal and inclination preventing mean and method |
| CN107724391A (en) * | 2017-10-20 | 2018-02-23 | 中铁上海工程局集团第五工程有限公司 | A kind of pile foundation steel bar cage transfers centralized positioning detector |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021142941A1 (en) | 2021-07-22 |
| CN111119182A (en) | 2020-05-08 |
| DE212020000478U1 (en) | 2021-08-04 |
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