CN102704691A - Whole-bundle disanchoring device and disanchoring method adopting same - Google Patents
Whole-bundle disanchoring device and disanchoring method adopting same Download PDFInfo
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- CN102704691A CN102704691A CN2012101820511A CN201210182051A CN102704691A CN 102704691 A CN102704691 A CN 102704691A CN 2012101820511 A CN2012101820511 A CN 2012101820511A CN 201210182051 A CN201210182051 A CN 201210182051A CN 102704691 A CN102704691 A CN 102704691A
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Abstract
The invention discloses a whole-bundle disanchoring device and a disanchoring method adopting the same. The whole-bundle disanchoring device comprises a top-front working pile and a top-rear disanchoring device, wherein the top-front working pile is pipe-shaped and is arranged at the outer part of one end of a large prestressed member; the top-rear disanchoring device is formed by a first ring, a second ring and a plurality of cylinders; the first ring and the second ring are arranged in parallel; the plurality of cylinders are arranged between the first ring and the second ring at a distance; one end of each cylinder is fixed on the first ring, and the other end of each cylinder is connected on the second ring by a bolt. The whole-bundle disanchoring device and the disanchoring method disclosed by the invention has the beneficial effects that the top-front working pile and the top-rear disanchoring device are respectively arranged at the outer parts of a temporary anchor and a first working anchor in the disanchoring process of a prestressed steel-stranded bundle and is used for assisting a hollow jack and the working anchor to finish the assembly and disassembly of a working clamping piece together and eliminating the stress, so that works such the construction process of whole disanchoring operation of the prestressed steel-stranded bundle are finished. The whole-bundle disanchoring device disclosed by the invention has the advantages of simple design, simpleness and convenience for operation and the like.
Description
Technical field
The invention belongs to the prestress engineering technical field of construction, particularly relate to a kind of anchor method that moves back that is used to remove the whole bundle anchor restorer of prestress steel hinge bundle and adopts this whole bundle anchor restorer.
Technical background
Develop rapidly along with the long-span bridge beam; The quantity of various large-scale components constantly increases, and wherein the use of prestressed member is also more and more, and it not only has all advantages of steel concrete; But also can give full play to the characteristic of high-strength material (strong concrete, high strength cast iron); So the sectional dimension of member is little, the ratio that the deadweight moment of flexure accounts for total moment of flexure descends greatly, and the span ability of structure is improved.In addition, compare with steel concrete, prestressed member can be saved 30～40% steel, strides the footpath more greatly, saves the more.Prestressed member can also reduce structural cracks simultaneously, improves durability of structures.In addition, in the work progress of some engineering, some interim prestressed members need be set sometimes, need these interim prestressed members be removed after construction is accomplished.The key of removing prestressed member is that the prestress steel of removing wherein that is made up of presstressed reinforcing steel cuts with scissors bundle, and this process is also referred to as moves back anchor.As everyone knows, because the stress of prestress steel hinge bundle is very big in the large-sized prestress member, it is loaded down with trivial details therefore to remove construction technology, and security control requires high, and difficulty of construction is very big.The method for dismounting of interim prestress steel hinge bundle commonly used at present is to adopt single top to remove the method for presstressed reinforcing steel by root; The shortcoming of the method is a complex operation; Efficiency of construction is lower, danger is high; And overall pulling down construction very flexible, these reasons all can directly influence using of large span structure, building and develop.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of structure and technology simply applied widely, the scene of being beneficial to is controlled, puts in order the bundle anchor restorer safely and efficiently and is adopted this whole anchor method that moves back of restrainting anchor restorer.
In order to achieve the above object, whole bundle anchor restorer provided by the invention comprises working pile and back, top anchor restorer before the top; Wherein the preceding working pile in top is installed in the end outside of large-sized prestress member in a tubular form, and the prestress steel hinge bundle that is positioned at large-sized prestress member one end is run through in inside, and is formed with two hand holes of working on the circle wall of the preceding working pile in top; Push up the back anchor restorer to be arranged on the outside, outer end of pushing up preceding working pile with the preceding coaxial mode of working pile in top; Be provided with the open-core type jack between the working pile before itself and the top; Back, top anchor restorer is made up of first annulus, second annulus and Duo Gen cylinder, and wherein first annulus and the second annulus opposing parallel are provided with, and many cylinder standoff distances are arranged between first annulus and second annulus; One end of cylinder is fixed on first annulus; The other end is connected on second annulus through bolt, wholely thus forms the cylinder body structure, and be formed with on first annulus a plurality of utilize bolt will push up afterwards anchor restorer is fixed on the bolt hole on the open-core type jack.
Be symmetrical set on the circle wall of described two work hand holes working pile before the top.
Described many cylinders are provided with at first annulus and the second annulus equal intervals.
Described a plurality of bolt hole is provided with in the first annulus equal intervals.
Adopt the anchor method that moves back of whole bundle anchor restorer provided by the invention to comprise the following step that carries out in order:
1) at first by the staff working pile is installed on the interim ground tackle, promptly the prestress steel of large-sized prestress member one end hinge bundle is outside, and will push up the outside that preceding working pile is enclosed within interim anchor ring;
2) with prestress steel hinge bundle pass be fixed on the support and be positioned at the top before the open-core type jack in the working pile outside, and No. 1 work ground tackle and back, top anchor restorer are installed in the open-core type jack outside;
3) the open-core type jack is gone out top original text 130mm in advance, between mounted No. 1 work ground tackle and prestress steel hinge bundle, squeeze into intermediate plate, so that prestress steel hinge bundle is clamped;
4) the open-core type jack continues the top; No. 1 work this moment ground tackle will bear the stress from prestress steel hinge bundle and open-core type jack; Interim ground tackle does not then stress; Intermediate plate in the therefore interim ground tackle will produce loosening, and the staff all takes out above-mentioned loosening intermediate plate through the work hand hole afterwards;
6) to move back the distance between top pick to pick and first annulus be the 40mm place to the open-core type jack; To push up back anchor restorer and open-core type jack with the method for the bolt-through first annulus upper bolt hole firmly links together; Outside being positioned at the prestress steel hinge bundle in the anchor restorer outside, back, top, the work ground tackle is installed No. 2 then; And between No. 2 work ground tackle and prestress steel hinge bundle, squeeze into intermediate plate, so that prestress steel hinge bundle is clamped;
7) the open-core type jack continues to move back top pick; No. 2 work this moment ground tackle will bear the stress from prestress steel hinge bundle and open-core type jack; No. 1 the work ground tackle does not then stress; Therefore the intermediate plate in No. 1 work ground tackle will produce looseningly, and the staff all moves to above-mentioned loosening intermediate plate near second annulus through the space between the cylinder on the anchor restorer after pushing up afterwards;
8) the very heavy distance that ejects between top to the No. 1 work ground tackle and second annulus of open-core type is the 50mm place; Work at No. 1 then and squeeze into intermediate plate between ground tackle and the prestress steel hinge bundle,, continue the top afterwards with the clamping of prestress steel hinge bundle; No. 1 work this moment ground tackle will bear the stress from prestress steel hinge bundle and open-core type jack; The ground tackle of working for No. 2 does not then stress, and therefore No. 2 interior intermediate plate of work ground tackle will produce and become flexible, and the staff all cuts with scissors Shu Qianyi 200mm along prestress steel with above-mentioned loosening intermediate plate afterwards; Move back the top then, accomplish a circulation thus;
9) repeating step 6) show when putting tensile stress that to the reading of step 8) on the open-core type jack work hand hole from the interim ground tackle cuts off prestress steel twist-beam, accomplishes the anchor process of moving back of whole prestress steel twist-beam thus less than 10MPa.
Whole bundle anchor restorer provided by the invention and adopt this whole bundle anchor restorer move back anchor method be before moving back of prestress steel twist-beam will push up in the anchor process behind working pile and the top anchor restorer place the outside of interim ground tackle and open-core type jack respectively; Being used to assist the open-core type jack to accomplish peace jointly with the work ground tackle tears work clip sheet open, unloads de-stress; Thereby accomplish prestress steel twist-beam integral body and move back work such as anchor job execution process; Not only can reduce the dismounting duration of prestress steel twist-beam greatly, high efficiency, safety and good stability; And reasonable in design, simple, be convenient to operation, and be applicable to the dismounting of different parts, different root bundle prestress steel twist-beams.
Description of drawings
Fig. 1 is the preceding working pile structural representation in top in the whole bundle anchor restorer provided by the invention.
Fig. 2 is back, a top anchor restorer structural representation in the whole bundle anchor restorer provided by the invention.
Fig. 3 moves back anchor process sketch map for adopting whole bundle anchor restorer provided by the invention.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment to whole bundle anchor restorer provided by the invention and move back anchor method and be elaborated.
Like Fig. 1-shown in Figure 3, whole bundle anchor restorer provided by the invention comprises working pile 1 and back, top anchor restorer 2 before the top; Wherein the preceding working pile 1 in top is installed in the end outside of large-sized prestress member 3 in a tubular form, and the prestress steel hinge bundle 4 that is positioned at large-sized prestress member 3 one ends is run through in inside, and is formed with two hand holes 5 of working on the circle wall of the preceding working pile 1 in top; Push up back anchor restorer 2 to be arranged on the outside, outer end of pushing up preceding working pile 1 with the preceding working pile 1 coaxial mode in top; Be provided with open-core type jack 8 between the working pile 1 before itself and the top; Top back anchor restorer 2 is made up of first annulus 6, second annulus 7 and Duo Gen cylinder 8, wherein first annulus 6 and the 7 opposing parallel settings of second annulus, and many cylinder 8 standoff distances are arranged between first annulus 6 and second annulus 7; One end of cylinder 8 is fixed on first annulus 6; The other end is connected on second annulus 7 through bolt 9, wholely thus forms the cylinder body structure, and be formed with on first annulus 6 a plurality of utilize bolt will push up afterwards anchor restorer 2 is fixed on the bolt hole on the open-core type jack 8.
Be symmetrical set on the circle wall of described two work hand holes 5 working pile 1 before the top.
Described many cylinders 8 are in first annulus 6 and the 7 equal intervals settings of second annulus.
Described a plurality of bolt hole is in the 6 equal intervals settings of first annulus.
The internal diameter of working pile 1 is 165mm before the described top, and external diameter is 250mm, and height is 220mm; The external diameter of back, top anchor restorer 2 is 400mm, and height is 310mm.
Adopt the anchor method that moves back of whole bundle anchor restorer provided by the invention to comprise the following step that carries out in order:
1) at first by the staff working pile is installed on the interim ground tackle 10, promptly the prestress steel of large-sized prestress member 3 one ends hinge is restrainted 4 outsides, and will push up the outside that preceding working pile 1 is enclosed within interim anchor ring 10;
2) prestress steel hinge bundle 4 is passed the open-core type jack 8 that is fixed on the support and is positioned at preceding working pile 1 outside, top, and work for No. 1 ground tackle 11 and back, top anchor restorer 2 are installed in open-core type jack 8 outsides;
3) open-core type jack 8 is gone out top original text 130mm in advance, between mounted No. 1 work ground tackle 11 and prestress steel hinge bundle 4, squeeze into intermediate plate, so that prestress steel hinge bundle 4 is clamped;
4) open-core type jack 8 continues the top; No. 1 work this moment ground tackle 11 will bear the stress from prestress steel hinge bundle 4 and open-core type jack 8; Interim ground tackle 10 does not then stress; Intermediate plate in the therefore interim ground tackle 10 will produce loosening, and the staff all takes out above-mentioned loosening intermediate plate through work hand hole 5 afterwards;
6) to move back the distance between top pick to pick and first annulus 6 be the 40mm place to open-core type jack 8; To push up back anchor restorer 2 with the method for bolt-through first annulus 6 upper bolt holes firmly links together with open-core type jack 8; Outside being positioned at the prestress steel hinge bundle 4 in anchor restorer 2 outsides, back, top, work ground tackle 12 is installed No. 2 then; And between No. 2 work ground tackle 12 and prestress steel hinge bundle 4, squeeze into intermediate plate, so that prestress steel hinge bundle 4 is clamped;
7) open-core type jack 8 continues to move back top pick; No. 2 work this moment ground tackle 12 will bear the stress from prestress steel hinge bundle 4 and open-core type jack 8; No. 1 work ground tackle 11 does not then stress; Therefore the intermediate plates in No. 1 work ground tackle 11 will produce looseningly, and the staff all moves to above-mentioned loosening intermediate plate near second annulus 7 through the space between the cylinder 8 on the anchor restorer 2 after pushing up afterwards;
8) to go out the distance between top to No. 1 work ground tackle 11 and second annulus 7 be the 50mm place for open-core type jack 8; Work at No. 1 then and squeeze into intermediate plate between ground tackle 11 and the prestress steel hinge bundle 4,, continue the top afterwards with 4 clampings of prestress steel hinge bundle; No. 1 work this moment ground tackle 11 will bear the stress from prestress steel hinge bundle 4 and open-core type jack 8; The ground tackle 12 of working for No. 2 does not then stress, and therefore No. 2 work ground tackle 12 interior intermediate plates will produce and become flexible, and the staff all cuts with scissors bundle 4 reach 200mm along prestress steel with above-mentioned loosening intermediate plate afterwards; Move back the top then, accomplish a circulation thus;
9) repeating step 6) show when putting tensile stress that to the reading of step 8) on open-core type jack 8 the work hand hole 5 from the interim ground tackle 10 cuts off prestress steel twist-beam 4, accomplishes the anchor process of moving back of whole prestress steel twist-beam 4 thus less than 10MPa.
Claims (5)
1. put in order the bundle anchor restorer for one kind, it is characterized in that: described whole bundle anchor restorer comprises anchor restorer (2) behind preceding working pile (1) in top and the top; Wherein the preceding working pile (1) in top is installed in the end outside of large-sized prestress member (3) in a tubular form, and the prestress steel hinge bundle (4) that is positioned at large-sized prestress member (3) one ends is run through in inside, and is formed with two hand holes (5) of working on the circle wall of the preceding working pile (1) in top; Push up back anchor restorer (2) to be arranged on the outside, outer end of pushing up preceding working pile (1) with the preceding coaxial mode of working pile (1) in top; Be provided with open-core type jack (8) between the working pile (1) before itself and the top; Top back anchor restorer (2) is made up of first annulus (6), second annulus (7) and many cylinders (8); Wherein first annulus (6) and second annulus (7) opposing parallel setting; Many cylinders (8) standoff distance is arranged between first annulus (6) and second annulus (7), and an end of cylinder (8) is fixed on first annulus (6), and the other end is connected on second annulus (7) through bolt (9); Wholely thus form the cylinder body structure, and be formed with on first annulus (6) a plurality of utilize bolt will push up afterwards anchor restorer (2) is fixed on the bolt hole on the open-core type jack (8).
2. whole bundle anchor restorer according to claim 1 is characterized in that: be symmetrical set on the circle wall of described two work hand holes (5) working pile (1) before the top.
3. whole bundle anchor restorer according to claim 1 is characterized in that: described many cylinders (8) are in first annulus (6) and second annulus (7) equal intervals setting.
4. whole bundle anchor restorer according to claim 1 is characterized in that: described a plurality of bolts hole are in first annulus (6) equal intervals setting.
5. anchor method that moves back that adopts whole bundle anchor restorer as claimed in claim 1, it is characterized in that: the described anchor method that moves back comprises the following step that carries out in order:
1) at first by the staff working pile is installed on the interim ground tackle (10), promptly the prestress steel of large-sized prestress member (3) one ends hinge is restrainted (4) outside, and will push up the outside that preceding working pile (1) is enclosed within interim anchor ring (10);
2) prestress steel is cut with scissors bundle (4) and pass the open-core type jack (8) that is fixed on the support and is positioned at preceding working pile (1) outside, top, and No. 1 work ground tackle (11) is installed outside open-core type jack (8) and pushed up back anchor restorer (2);
3) open-core type jack (8) is gone out top original text 130mm in advance, between mounted No. 1 work ground tackle (11) and prestress steel hinge bundle (4), squeeze into intermediate plate, so that prestress steel hinge bundle (4) is clamped;
4) open-core type jack (8) continues the top; No. 1 work ground tackle this moment (11) will bear the stress from prestress steel hinge bundle (4) and open-core type jack (8); Interim ground tackle (10) does not then stress; Intermediate plate in the therefore interim ground tackle (10) will produce loosening, and the staff all takes out above-mentioned loosening intermediate plate through work hand hole (5) afterwards;
6) to move back the distance between top pick to pick and first annulus (6) be the 40mm place to open-core type jack (8); To push up back anchor restorer (2) and open-core type jack (8) with the method for bolt-through first annulus (6) upper bolt hole firmly links together; Work ground tackle (12) is installed outside the prestress steel hinge bundle (4) that is positioned at top back anchor restorer (2) outside No. 2 then; And between No. 2 work ground tackle (12) and prestress steel hinge bundle (4), squeeze into intermediate plate, with prestress steel hinge bundle (4) clamping;
7) open-core type jack (8) continues to move back top pick; No. 2 work ground tackle this moment (12) will bear the stress from prestress steel hinge bundle (4) and open-core type jack (8); No. 1 work ground tackle (11) then do not stress; Therefore the intermediate plate in No. 1 work ground tackle (11) will produce loosening, afterwards the staff through the top after anchor restorer (2) upward above-mentioned loosening intermediate plate is all moved near second annulus (7) space between the cylinder (8);
8) to go out the distance between top to No. 1 work ground tackle (11) and second annulus (7) be the 50mm place to open-core type jack (8); Work at No. 1 then and squeeze into intermediate plate between ground tackle (11) and the prestress steel hinge bundle (4),, continue the top afterwards with prestress steel hinge bundle (4) clamping; No. 1 work ground tackle this moment (11) will bear the stress from prestress steel hinge bundle (4) and open-core type jack (8); The ground tackle (12) of working for No. 2 does not then stress, and therefore the intermediate plate in No. 2 work ground tackle (12) will produce and become flexible, and the staff all cuts with scissors bundle (4) reach 200mm along prestress steel with above-mentioned loosening intermediate plate afterwards; Move back the top then, accomplish a circulation thus;
9) repeating step 6) show when putting tensile stress that to the reading of step 8) on open-core type jack (8) the work hand hole (5) from the interim ground tackle (10) cuts off prestress steel twist-beam (4), accomplishes the anchor process of moving back of whole prestress steel twist-beam (4) thus less than 10MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182051.1A CN102704691B (en) | 2012-06-05 | 2012-06-05 | Whole-bundle disanchoring device and disanchoring method adopting same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182051.1A CN102704691B (en) | 2012-06-05 | 2012-06-05 | Whole-bundle disanchoring device and disanchoring method adopting same |
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| Publication Number | Publication Date |
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| CN102704691A true CN102704691A (en) | 2012-10-03 |
| CN102704691B CN102704691B (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210182051.1A Active CN102704691B (en) | 2012-06-05 | 2012-06-05 | Whole-bundle disanchoring device and disanchoring method adopting same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631835A (en) * | 2013-11-15 | 2015-05-20 | 五冶集团上海有限公司 | Prestressed beam and slab stretching-drawing group-bundle steel strand anchor receding device and application thereof |
| CN107419906A (en) * | 2017-09-25 | 2017-12-01 | 中铁五局集团有限公司 | A kind of prestress wire Double Tops move back anchor device and method |
| CN107975240A (en) * | 2017-11-30 | 2018-05-01 | 中国冶集团有限公司 | One kind moves back anchor two times tensioning device and its construction method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1058573A (en) * | 1964-05-20 | 1967-02-15 | Hoskuld Olav Schancke Hanssen | A method and means for prestressing a concrete structure |
| CN101509385A (en) * | 2009-03-24 | 2009-08-19 | 中煤第五建设公司矿业分公司 | Cable stretching jack releasing device |
| CN202228093U (en) * | 2011-09-06 | 2012-05-23 | 焦作煤业集团赵固（新乡）能源有限责任公司 | Portable anchor wire withdrawing device |
-
2012
- 2012-06-05 CN CN201210182051.1A patent/CN102704691B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1058573A (en) * | 1964-05-20 | 1967-02-15 | Hoskuld Olav Schancke Hanssen | A method and means for prestressing a concrete structure |
| CN101509385A (en) * | 2009-03-24 | 2009-08-19 | 中煤第五建设公司矿业分公司 | Cable stretching jack releasing device |
| CN202228093U (en) * | 2011-09-06 | 2012-05-23 | 焦作煤业集团赵固（新乡）能源有限责任公司 | Portable anchor wire withdrawing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631835A (en) * | 2013-11-15 | 2015-05-20 | 五冶集团上海有限公司 | Prestressed beam and slab stretching-drawing group-bundle steel strand anchor receding device and application thereof |
| CN107419906A (en) * | 2017-09-25 | 2017-12-01 | 中铁五局集团有限公司 | A kind of prestress wire Double Tops move back anchor device and method |
| CN107975240A (en) * | 2017-11-30 | 2018-05-01 | 中国冶集团有限公司 | One kind moves back anchor two times tensioning device and its construction method |
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| Publication number | Publication date |
|---|---|
| CN102704691B (en) | 2014-10-29 |
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