CN101818547A - Corrugated pipe pore-forming device for enlarging prestressed aperture of cross section - Google Patents
Corrugated pipe pore-forming device for enlarging prestressed aperture of cross section Download PDFInfo
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- CN101818547A CN101818547A CN 201010145985 CN201010145985A CN101818547A CN 101818547 A CN101818547 A CN 101818547A CN 201010145985 CN201010145985 CN 201010145985 CN 201010145985 A CN201010145985 A CN 201010145985A CN 101818547 A CN101818547 A CN 101818547A
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Abstract
The invention discloses a corrugated pipe pore-forming device for enlarging a prestressed aperture of a cross section. In the pore-forming device, the cross section at a large-cross section end of a corrugated pipe section (2) of which a transition section is provided with a bealock and the cross section of a corrugated pipe section (3) which has a large cross section and is provided with the bealock are equal and are connected with each other; the cross section at a small-cross section end of the corrugated pipe section (2) of which the transition cross section is provided with the bealock and the cross section of a corrugated pipe section (1) which is provided with a bealock and has a small cross section are equal and are connected with each other; and the corrugated pipe section (2) of which the transition cross section is provided with the bealock is a section of a uniformly transited corrugated pipe, with the bealock, between the corrugated pipe section (3) which is provided with the bealock and has the large cross section and the corrugated pipe section (1) which is provided with the bealock and has the small cross section. By using the device, prestressed apertures with different cross sections are formed at different positions of the same prestressed aperture by connecting the corrugated pipes with different cross-sectional areas, the problem of generating different numbers of exudations at different positions of the same aperture is solved, and the complete compaction of a grouting material around prestressed reinforced steel is ensured.
Description
Technical field
The present invention relates to a kind of prestressed pore passage bellows hole-forming device, refer in particular to the bellows arrangement of moulding band bealock enlarged cross section prestressed pore passage.
Background technology
In present civil engineering industry post stressed concrete construction, the pore-forming technique of prestressed pore passage has two kinds, be bellows pore-forming technique and rubber pulling rod rod pore-forming technique, but the prestressed pore passage of employed this two kinds of pore-forming technique institutes moulding of engineering circle at present is uniform section in a duct.
Concerning prestressed member, the bleeding of bottom position horizontal pipe is less, and the top duct that upwards bends up is light than cement paste because of water density, and the bleeding rising phenomenon appears, thereby the bleeding that causes the top duct that upwards bends up takes place more than the excreting water phenomenon of bottom position horizontal pipe, and prismatic prestressed pore passage can not well solve same duct produces the varying number bleeding at the diverse location place problem, easily causes the corrosion of presstressed reinforcing steel, influences the durability of prestress system.
Summary of the invention
Technical problem to be solved by this invention: solve same duct produces the varying number bleeding at the diverse location place problem, guarantee that the grouting agent around the presstressed reinforcing steel reaches closely knit purpose fully.
The technical solution adopted for the present invention to solve the technical problems is:
In Post-tension Prestress Construction, when using bellows arrangement moulding band bealock prestressed pore passage,, use a kind of enlarged cross section bellows arrangement in the section of bending up of prestressed pore passage, by connecting the bellows of different cross section, come the prestressed pore passage of moulding enlarged cross section.
This hole-forming device comprises three parts, the bellows piece of the bellows piece of the band bealock of the bellows piece of promptly heavy in section band bealock, small bore and transition section band bealock; The cross section of the heavy in section end of the bellows piece of transition section band bealock equates with the cross section of the bellows piece of heavy in section band bealock, and is connected together; The cross section of the small bore end of the bellows piece of transition section band bealock equates with the cross section of the bellows piece of the band bealock of small bore, and is connected together.
The bellows piece of transition section band bealock is the bellows of one section band bealock of even transition between the bellows piece of band bealock of the bellows piece of heavy in section band bealock and small bore.
The invention has the beneficial effects as follows: use this device, prestressed pore passage in the diverse location place moulding various cross-sectional areas of same prestressed pore passage, to solve same duct produces the varying number bleeding at the diverse location place problem, guarantee that the grouting agent around the presstressed reinforcing steel reaches closely knit purpose fully.
Description of drawings
Fig. 1 is an enlarged cross section prestressed pore passage bellows hole-forming device vertical view.
Fig. 2 is an enlarged cross section prestressed pore passage bellows hole-forming device left view.
Fig. 3 is an enlarged cross section prestressed pore passage bellows hole-forming device right view.
Fig. 4 is an enlarged cross section prestressed pore passage bellows hole-forming device small bore section user mode schematic diagram.
Fig. 5 is an enlarged cross section prestressed pore passage bellows hole-forming device heavy in section section user mode schematic diagram.
Among the figure: 1 is the bellows piece of the band bealock of small bore, 2 is the bellows piece of transition section band bealock, 3 is the bellows piece of heavy in section band bealock, 4 is the bealock upper bellows, 5 is the bealock lower bellows, and 6 is the water and the trickle floating thing of free state, and 7 is steel strand, 8 is cement paste, and 9 is concrete.
The specific embodiment
The present invention will be further described by embodiment below in conjunction with accompanying drawing:
Embodiment one: shown in Fig. 1-5, what the present invention described is a kind of enlarged cross section prestressed pore passage bellows hole-forming device.
In prestressing force simply supported beam construction, the prestress hole road shape is flat segments, is the section of bending up at the beam two ends that the prestressed pore passage cross sectional shape is a bealock shape at span centre, and is the prestressed pore passage of enlarged cross section in the section of bending up.In the pore forming process, in the flat segments of simply supported beam, the prestressed pore passage of the bellows piece 1 moulding band bealock of the band bealock of employing small bore; In the section of bending up of simply supported beam, adopt the prestressed pore passage of the bellows piece 3 moulding band bealocks of heavy in section band bealock, the bellows in two kinds of cross sections connects by the bellows piece 2 of transition section band bealock.The cross section of the heavy in section end of the bellows piece 2 of transition section band bealock equates with the cross section of the bellows piece 3 of heavy in section band bealock, and is connected together; The cross section of the small bore end of the bellows piece 2 of transition section band bealock equates with the cross section of the bellows piece 1 of the band bealock of small bore, and is connected together.The bellows piece 2 of transition section band bealock is the bellows of one section band bealock of even transition between the bellows piece 1 of band bealock of the bellows piece 3 of heavy in section band bealock and small bore.
Fig. 4 and Fig. 5 are respectively enlarged cross section prestressed pore passage bellows hole-forming device heavy in section section user mode schematic diagram and enlarged cross section prestressed pore passage bellows hole-forming device small bore section user mode schematic diagram.Among the figure: the water of free state and trickle floating thing 6, steel strand 7, cement paste 8, concrete 9.
The area of steel strand 7 is 1485mm
2, the area ratio that accounts for bealock bottom prestressed pore passage according to the area of steel strand 7 is 1/3～2/3 principle, determines the sectional area of bealock lower bellows.The area of getting bealock lower bellows 5 is 3769.91mm
2Ratio in the area of the area of bealock upper bellows 4 and bealock lower bellows 5 is 5%～20%, flat segments at simply supported beam, the prestressed pore passage of the bellows piece 1 moulding band bealock of the band bealock of employing small bore, the area of bealock upper bellows 4 is taken as 188.50mm
2In the section of bending up of simply supported beam, adopt the prestressed pore passage of the bellows moulding band bealock of heavy in section band bealock, the area of bealock upper bellows 4 is taken as 753.98mm
2The bellows piece 2 of transition section band bealock is got 30cm approximately, and the bellows of the band bealock in two kinds of cross sections connects by the bellows piece 2 of transition section band bealock, the enlarged cross section prestressed pore passage in the promptly plastic same duct.
Claims (2)
1. enlarged cross section prestressed pore passage bellows hole-forming device is characterized in that: this hole-forming device comprises the bellows piece (1) of band bealock of bellows piece (3), small bore of heavy in section band bealock and the bellows piece (2) of transition section band bealock; The cross section of the heavy in section end of the bellows piece (2) of transition section band bealock equates with the cross section of the bellows piece (3) of heavy in section band bealock, and is connected together; The cross section of the small bore end of the bellows piece (2) of transition section band bealock equates with the cross section of the bellows piece (1) of the band bealock of small bore, and is connected together.
2. a kind of enlarged cross section prestressed pore passage bellows hole-forming device according to claim 1 is characterized in that: the bellows piece (2) of transition section band bealock is the bellows of one section band bealock of even transition between the bellows piece (1) of band bealock of the bellows piece (3) of heavy in section band bealock and small bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010145985 CN101818547A (en) | 2010-04-09 | 2010-04-09 | Corrugated pipe pore-forming device for enlarging prestressed aperture of cross section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010145985 CN101818547A (en) | 2010-04-09 | 2010-04-09 | Corrugated pipe pore-forming device for enlarging prestressed aperture of cross section |
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| Publication Number | Publication Date |
|---|---|
| CN101818547A true CN101818547A (en) | 2010-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010145985 Pending CN101818547A (en) | 2010-04-09 | 2010-04-09 | Corrugated pipe pore-forming device for enlarging prestressed aperture of cross section |
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| CN (1) | CN101818547A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104233960A (en) * | 2014-09-30 | 2014-12-24 | 中铁四局集团有限公司 | Workpiece and construction method for bridge continuous beam web grouting |
| CN107471614A (en) * | 2017-08-08 | 2017-12-15 | 中国铁路总公司 | A kind of band bealock plastic corrugated pipe forming method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287202A (en) * | 1999-09-03 | 2001-03-14 | 柳州欧维姆建筑机械有限公司 | Vacuum grouting process and its sealed anchor cable |
| CN2816542Y (en) * | 2005-04-30 | 2006-09-13 | 中铁一局集团第四工程有限公司 | Large-diameter plastic corrugated pipe for prestressed concrete vacuum slurry pressing |
| JP2007040052A (en) * | 2005-08-05 | 2007-02-15 | Kajima Corp | Steel for unbonded prestressed concrete, its manufacturing method and structure |
| JP2007297853A (en) * | 2006-05-01 | 2007-11-15 | Sumitomo Denko Steel Wire Kk | Pre-grouted steel bar for prestressed concrete |
| CN101200967A (en) * | 2007-11-29 | 2008-06-18 | 北京交通大学 | Compacting apparatus for prestressed pore passage grouting |
-
2010
- 2010-04-09 CN CN 201010145985 patent/CN101818547A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287202A (en) * | 1999-09-03 | 2001-03-14 | 柳州欧维姆建筑机械有限公司 | Vacuum grouting process and its sealed anchor cable |
| CN2816542Y (en) * | 2005-04-30 | 2006-09-13 | 中铁一局集团第四工程有限公司 | Large-diameter plastic corrugated pipe for prestressed concrete vacuum slurry pressing |
| JP2007040052A (en) * | 2005-08-05 | 2007-02-15 | Kajima Corp | Steel for unbonded prestressed concrete, its manufacturing method and structure |
| JP2007297853A (en) * | 2006-05-01 | 2007-11-15 | Sumitomo Denko Steel Wire Kk | Pre-grouted steel bar for prestressed concrete |
| CN101200967A (en) * | 2007-11-29 | 2008-06-18 | 北京交通大学 | Compacting apparatus for prestressed pore passage grouting |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104233960A (en) * | 2014-09-30 | 2014-12-24 | 中铁四局集团有限公司 | Workpiece and construction method for bridge continuous beam web grouting |
| CN104233960B (en) * | 2014-09-30 | 2016-02-17 | 中铁四局集团有限公司 | For workpiece and the construction method of the grouting of bridge continuous beam web |
| CN107471614A (en) * | 2017-08-08 | 2017-12-15 | 中国铁路总公司 | A kind of band bealock plastic corrugated pipe forming method |
| CN107471614B (en) * | 2017-08-08 | 2021-07-13 | 中国铁路总公司 | Method for forming plastic corrugated pipe with bealock |
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Application publication date: 20100901 |