CN101487231A - Anchorage sealing structure - Google Patents
Anchorage sealing structure Download PDFInfo
- Publication number
- CN101487231A CN101487231A CNA2009100252406A CN200910025240A CN101487231A CN 101487231 A CN101487231 A CN 101487231A CN A2009100252406 A CNA2009100252406 A CN A2009100252406A CN 200910025240 A CN200910025240 A CN 200910025240A CN 101487231 A CN101487231 A CN 101487231A
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- anchor slab
- hole
- sealing
- sealant
- plate
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Abstract
The invention relates to an anchor sealing device, comprising an anchor plate (6), a protection cover (1), a sealing pad (4), anti-corrosive grease (2), a clamping sheet (5), a sealing plate (7) and a sealant (10). The end surface of the rear end of the anchor plate (6) is concavely provided with a sealant storage trough (9); the end surface of the front end of the anchor plate (6) is provided with a sealant injection hole (8) in the axial direction towards the sealant storage trough (9); the sealant injection hole (8) is communicated with the sealant storage trough (9); the sealing plate (7) is fixedly arranged outside the sealant storage trough (9) at the rear end of the anchor plate (6); the sealing plate (7) is provided with a straight hole which has consistent position with that of the anchor plate (6) and the diameter of which is more than 4-5mm compared with that of the strand; and the sealant (10) is injected into the sealant storage trough (9) at the rear end of the anchor plate through the sealant injection hole (8) on the anchor plate (6) and into the clearance between the sealing plate (7) and the strand (3). The anchor sealing device has simple structure, good sealing effect and convenient use, and can be widely applied to clamping piece group anchors of strands in the engineering such as cable-stayed bridges, external cables, tie bar cables, and anchorage of rock and soil and the like.
Description
(1) technical field
The present invention relates to a kind of steel strand intermediate plate group anchor, relate in particular to a kind of hermetically-sealed construction of steel strand intermediate plate group anchor.Belong to the road and bridge technical field.
(2) background technology
Steel strand intermediate plate group anchor mainly is made up of anchor slab and intermediate plate, and wherein intermediate plate is two or three-chip type, and its profile is a cone, and endoporus generally is processed into the inverted triangle screwed hole.A plurality of taper holes are arranged on the anchor slab.Steel strand utilize the wedge action between intermediate plate and the anchor slab taper hole that the prestressing force that is applied to steel strand is kept with after the intermediate plate clamping and applying prestressing force.
For avoiding prestressed failure, key is to solve the main member in the prestressed structure---the corrosion problem of steel strand and ground tackle.At present, the anticorrosive steel strand of existing various ways occurs, and the problem of steel strand corrosion can be solved substantially.Therefore, the anticorrosion problem of ground tackle just becomes a difficult problem relatively more outstanding in the prestressing technique.The ground tackle appearance generally adopts grease or paint to carry out anticorrosive coating.Ground tackle inside, especially anchor slab taper hole, taper hole inner clamp piece and steel strand are subjected to the preservative treatment of intermediate plate retaining part, generally be that sealing plate is installed at the ground tackle rear portion, establish hole,, aperture consistent on the sealing plate than steel strand slightly larger in diameter with position, anchor slab hole, with press oily equipment will build grease from intermediate plate clamp-on carry out in the anchor slab hole anticorrosion.Its structure as shown in Figure 1.The problem of its existence has:
1) decomposition because the building grease easily wears out, grease easily leaks, and the grease amount of clamp-oning is difficult to control;
2) because of the boring ratio steel strand slightly larger in diameter on the sealing plate, steel strand pass difficulty, even pass by force, also easily sealing plate are destroyed, and cause grease to leak.Therefore this antiseptic effect is not good.
(3) summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, provide a kind of ground tackle inside that can make to seal fully, prevent that aqueous vapor or other corrosive medium from entering, and fundamentally solves the anchorage sealing structure of the anticorrosion problem of ground tackle.
The object of the present invention is achieved like this: a kind of anchorage sealing structure; comprise anchor slab; protective cover; sealing mat; anticorrosion grease; intermediate plate; sealing plate and fluid sealant; described protective cover and sealing mat are fixedly connected on the anchor slab front side; described anchor slab inside is provided with a plurality of through holes; the back segment of this through hole is a straight hole; the leading portion of through hole is a taper hole; wedge in the taper hole of anchor slab behind the described intermediate plate clamping steel strand; the intermediate plate front end exposes; described anticorrosion grease is filled in the protective cover; be concaved with storage glue groove on the end face of described anchor slab rear end; on the anchor slab front end end face to storage glue groove axis of orientation to offering hole for injecting glue; this hole for injecting glue is connected with described storage glue groove; the storage glue groove external fixation of described anchor slab rear end has sealing plate; the sealing plate be provided with anchor slab on the position, hole corresponding consistent; the aperture is than the straight hole of the big 4～5mm of steel strand diameter, and described fluid sealant is by in the storage glue groove of the injection of the hole for injecting glue on anchor slab anchor slab rear end and in the gap between sealing plate and the steel strand.
Steel strand through stretch-draw and by the intermediate plate anchoring after, in the hole for injecting glue of anchor slab front end, inject polyurethane sealant with glue-injection machine, make in the storage glue groove at anchor slab rear portion and in the gap of sealing plate and steel strand and be full of fluid sealant fully, after treating its curing, between the storage glue groove and steel strand at anchor slab rear portion, form the structure of sealing fully, aqueous vapor and other corrosive medium can not enter this space.Sealing mat and protective cover are installed successively again, and itself and anchor slab are connected and fixed with screw, in protective cover, inject anticorrosion grease with oiling machine, thereby make the wedging position of taper hole of taper hole, intermediate plate and the anchor slab of anchor slab, and steel strand all are protected by the position of intermediate plate clamping; Application is painted at other position at anchor slab, makes each position of ground tackle all be in the anti-corrosion protection state, thereby realizes the reliably anticorrosion of ground tackle.Ground tackle integral body obtains seal protection, can not be subjected to the corrosion of aqueous vapor or other corrosive medium.
The present invention is simple in structure, good sealing effect, and easy to use.This device can be widely used in the steel strand intermediate plate group anchor of engineerings such as cable stayed bridge, external tendon, tie-rod rope, ground anchorage.
(4) description of drawings
Fig. 1 is the structural representation of anchorage sealing structure in the past.
Fig. 2 is the structural representation of anchorage sealing structure of the present invention.
Among the figure: protective cover 1, anticorrosion grease 2, steel strand 3, sealing mat 4, intermediate plate 5, anchor slab 6, sealing plate 7, hole for injecting glue 8, storage glue groove 9, fluid sealant 10.
(5) specific embodiment
As shown in Figure 2, the anchorage sealing structure that the present invention relates to mainly is made up of protective cover 1, sealing mat 4, anticorrosion grease 2, anchor slab 6, intermediate plate 5, sealing plate 7 and fluid sealant 10.Described protective cover 1 and sealing mat 4 are screwed and are connected anchor slab 6 front sides; described anchor slab 6 inside are provided with a plurality of through holes; the back segment of described through hole is a straight hole; the leading portion of through hole is a taper hole; described intermediate plate 5; in the taper hole of clamping steel strand 3 back wedging anchor slabs, the intermediate plate front end exposes, and described anticorrosion grease 2 is along in the seal cavity of the protective cover 1 of pouring orifice injection anchor slab 6 front sides of offering on the protective cover 1.Protect anchor slab, steel strand and the intermediate plate of sealing in it.Be concaved with storage glue groove 9 on the described anchor slab 6 rear end end faces, to offering hole for injecting glue 8, this hole for injecting glue 8 is connected with described storage glue groove 9 anchor slab 6 front ends to storage glue groove 9 axis of orientations.Storage glue groove 9 external fixation of described anchor slab 6 rear ends have sealing plate 7, sealing plate 7 be provided with anchor slab 6 on corresponding consistent, aperture, position, hole than the straight hole of the big 4～5mm of steel strand diameter, with screw that sealing plate 7 and anchor slab 6 rear end end faces are closely fixing.Described fluid sealant 10 usefulness glue-injection machines are by in the storage glue groove 9 of the 8 injection anchor slab rear ends of the hole for injecting glue on the anchor slab 6 and in the gap between sealing plate 7 and the steel strand 3.Described fluid sealant is polyurethane sealant or silicone weather resistant glue, is colloidal substances do, contacts with air in a period of time of back to solidify, and firming body has certain caking property and extensibility.Anticorrosion life-span height is difficult to aging the decomposition.
After steel strand 3 stretch-draw, intermediate plate 5 clamping steel strand 3, the taper hole part wedging anchoring of intermediate plate 5 and anchor slab 6.With colloid-injecting gun fluid sealant 10 is injected by the hole for injecting glue 8 of anchor slab 6 front ends, and it is full of in the storage glue groove 9 and in the gap between sealing plate 7 and the steel strand 3.After the adhesive curing to be sealed, protective cover 1, sealing mat 2 are connected and fixed with anchor slab 6 with screw.The oil filler point of offering from protective cover 1 with grease gun injects in the seal cavity of anchor slab 6 front ends.
Claims (2)
1; a kind of anchorage sealing structure; comprise anchor slab (6); protective cover (1); sealing mat (4); anticorrosion grease (2); intermediate plate (5); sealing plate (7) and fluid sealant (10); described protective cover (1) and sealing mat (4) are fixedly connected on anchor slab (6) front side; described anchor slab (6) inside is provided with a plurality of through holes; the back segment of this through hole is a straight hole; the leading portion of through hole is a taper hole; in the taper hole of described intermediate plate (5) clamping steel strand (3) back wedging anchor slab; intermediate plate (5) front end exposes; described anticorrosion grease (2) is filled in the protective cover (1); it is characterized in that: be concaved with storage glue groove (9) on the end face of described anchor slab (6) rear end; on anchor slab (6) the front end end face to storage glue groove (9) axis of orientation to offering hole for injecting glue (8); this hole for injecting glue (8) is connected with described storage glue groove (9); storage glue groove (9) external fixation of described anchor slab (6) rear end has sealing plate (7); sealing plate (7) be provided with anchor slab (6) on the position, hole corresponding consistent; the aperture is than the straight hole of the big 4～5mm of steel strand diameter, and described fluid sealant (10) is by in the storage glue groove (9) of the injection of the hole for injecting glue (8) on the anchor slab (6) anchor slab rear end and in the gap between sealing plate (7) and the steel strand (3).
2, a kind of anchorage sealing structure according to claim 1 is characterized in that described fluid sealant (10) is polyurethane sealant or silicone weather resistant glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100252406A CN101487231B (en) | 2009-02-26 | 2009-02-26 | Anchorage sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100252406A CN101487231B (en) | 2009-02-26 | 2009-02-26 | Anchorage sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101487231A true CN101487231A (en) | 2009-07-22 |
| CN101487231B CN101487231B (en) | 2010-10-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100252406A Active CN101487231B (en) | 2009-02-26 | 2009-02-26 | Anchorage sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101487231B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2514621A (en) * | 2013-05-31 | 2014-12-03 | Vsl Int Ag | Cable anchorage |
| CN104294761A (en) * | 2014-04-09 | 2015-01-21 | 郑州中原应用技术研究开发有限公司 | Protection method of main cable anchoring system of suspension bridge, protection sealant of main cable anchoring system of suspension bridge and preparation method of protection sealant |
| CN105714819A (en) * | 2016-03-31 | 2016-06-29 | 中国水利水电科学研究院 | Novel prestressed anchor cable outer anchor head multiple protection device and fixing method thereof |
| CN108755409A (en) * | 2018-06-22 | 2018-11-06 | 柳州欧维姆机械股份有限公司 | A kind of anchor-hold device and its construction method of installation using single sealing overall perfusion |
| CN111550555A (en) * | 2020-05-18 | 2020-08-18 | 海盐建浩金属股份有限公司 | Ground tackle protection casing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2798410B1 (en) * | 1999-09-15 | 2001-11-23 | Freyssinet Int Stup | ANCHORING DEVICE FOR ATTACHING A STRUCTURAL CABLE TO A CONSTRUCTION ELEMENT |
| CN201003241Y (en) * | 2007-01-24 | 2008-01-09 | 柳州欧维姆机械股份有限公司 | Anchorage device with seal structure |
| CN201362910Y (en) * | 2009-02-26 | 2009-12-16 | 江阴法尔胜住电新材料有限公司 | Novel sealing structure for anchor device |
-
2009
- 2009-02-26 CN CN2009100252406A patent/CN101487231B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2514621A (en) * | 2013-05-31 | 2014-12-03 | Vsl Int Ag | Cable anchorage |
| GB2514621B (en) * | 2013-05-31 | 2020-04-15 | Vsl Int Ag | Cable anchorage |
| CN104294761A (en) * | 2014-04-09 | 2015-01-21 | 郑州中原应用技术研究开发有限公司 | Protection method of main cable anchoring system of suspension bridge, protection sealant of main cable anchoring system of suspension bridge and preparation method of protection sealant |
| CN105714819A (en) * | 2016-03-31 | 2016-06-29 | 中国水利水电科学研究院 | Novel prestressed anchor cable outer anchor head multiple protection device and fixing method thereof |
| CN108755409A (en) * | 2018-06-22 | 2018-11-06 | 柳州欧维姆机械股份有限公司 | A kind of anchor-hold device and its construction method of installation using single sealing overall perfusion |
| CN111550555A (en) * | 2020-05-18 | 2020-08-18 | 海盐建浩金属股份有限公司 | Ground tackle protection casing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101487231B (en) | 2010-10-06 |
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