CN2305449Y - Prestress anchor - Google Patents
Prestress anchor Download PDFInfo
- Publication number
- CN2305449Y CN2305449Y CN 97219877 CN97219877U CN2305449Y CN 2305449 Y CN2305449 Y CN 2305449Y CN 97219877 CN97219877 CN 97219877 CN 97219877 U CN97219877 U CN 97219877U CN 2305449 Y CN2305449 Y CN 2305449Y
- Authority
- CN
- China
- Prior art keywords
- anchor
- anchor plate
- tendons
- annular seal
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a prestressed anchor used for suspension bridge. Tendons of the prestressed anchor adopts non-binding knot tendons. Seal pads are arranged on the upper and lower denudation ends of the non-binding knot tendons to form a seal cavity between the seal pads and an anchor plate. The prevention of corrosion of the denudation ends of the non-binding knot tendons which pass through the inner part of the seal cavity can be realized effectively through filling antirust oil or antirust grease in the seal cavity, and thus, the antirust property of the utility model is better than a prestressed anchor which adopts bingding knot tendons. The repair can be realized as required by changing ropes hank by hank when the prestressed failure occurs in the anchor, and the ropes changing is convenient. The ropes can be easily changed comparatively, and the grouting procedure can be omitted when adopts the construction to construct.
Description
The utility model belongs to a kind of suspension cable prestressing force anchorage that is used on the suspension bridge.
The suspension cable anchorage overwhelming majority that the present domestic suspension bridge that has built up is adopted is the steel work anchorage, but also there are extremely indivedual suspension bridges to adopt external prestressing force anchorage, the presstressed reinforcing steel of this prestressing force anchorage adopts the bonding muscle, be that the pressure injection cement paste bonded together presstressed reinforcing steel and cement paste after tension of prestressed tendon put in place, in case prestressed failure appears in anchorage inside, can't change Suo Xiufu, bring certain influence for the safety of bridge.Cement paste has corrosiveness to exposed presstressed reinforcing steel in addition, might cause prestressed failure, adopts this structure construction and transfers rope comparatively to bother.
The purpose of this utility model is to provide a kind of and occurs losing efficacy when inner prestressing force, can change rope by bundle as required at any time, and it is all easy to change rope, construction, accent rope, the prestressing force anchorage that antiseptic property is good.
The purpose of this utility model realizes in the following way: presstressed reinforcing steel adopts unbonded tendon, be contained in sealing mat on the unbonded tendon respectively, following exposed end, make sealing mat form annular seal space between the anchor slab, preceding, support set is housed respectively in the oviduct of back anchor face, one end of support set withstands on the sealing mat respectively, its other end passes preceding anchor plate separately, back anchor plate is supported on the anchor slab, on the unbonded tendon, before following exposed end passes respectively, back anchor plate, tightly be clamped on the anchor slab by intermediate plate behind the anchor slab, carry out anticorrosion effectively to unbonded tendon exposed part through annular seal space by filling with antirust oil in the annular seal space or anti-corrosive grease.
Because presstressed reinforcing steel of the present utility model adopts unbonded tendon, sealing mat is contained in the upper and lower exposed end of unbonded tendon respectively, make sealing mat form annular seal space between the anchor slab, carry out anticorrosion effectively by antirust oil or the anti-corrosive grease of filling with in the annular seal space to the unbonded tendon exposed part that passes in the annular seal space, therefore its antiseptic property is than the better of bonding muscle arranged, when prestressed failure appears in anchorage inside, can change Suo Xiufu by bundle as required, and it is convenient to change rope.Adopt the said structure construction, transfer rope all fairly simple, can also save grouting procedure.Forms by strengthening backing plate and subbolster because of anchor plate before of the present utility model in addition, thus local stress under the stress of anchor head and the anchor can effectively be improved, thus by reduction anchorage concrete strength the total cost of anchorage is reduced significantly.
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1-be structural representation of the present utility model.
As shown in the figure, presstressed reinforcing steel of the present utility model adopts unbonded tendon 1, and preceding anchor plate 4 constitutes by strengthening backing plate and subbolster, installs subbolster, back anchor plate 8 and oviduct 7, at oviduct 7 places of forward and backward anchor face spiral bar 9, fluid concrete is installed.Again unbonded tendon 1 is passed oviduct 7, to strengthen backing plate after concrete reaches design strength is contained on the subbolster, sealing mat 6 is contained in respectively on the unbonded tendon 1, following exposed end and be stuck in before, on the oviduct 7 of back anchor face, make sealing mat 6 between anchor slab 2, form annular seal space, preceding, in the back anchor face oviduct 7 support set 5 is housed, one end of support set 5 withstands on respectively on the sealing mat 6, its other end passes preceding anchor plate 4 separately, back anchor plate 8 is supported on the anchor slab 2, then to anchor plate 4 before passing, back anchor plate 8, on the unbonded tendon 1 of anchor slab 2, following exposed end is implemented stretch-draw, makes on the unbonded tendon 1, following exposed end tightly is clamped on the anchor slab 2 by intermediate plate.With antirust oil or anti-corrosive grease by opening in forward and backward anchor plate 4,8 upper and lower parts and injecting in the annular seal spaces with the fill orifice 3 of annular seal space UNICOM; antirust oil or the anti-corrosive grease filled with in the annular seal space are anticorrosion to carrying out through unbonded tendon 1 exposed part in the annular seal space, thereby have effectively protected the exposed part of unbonded tendon 1.Add on the anchor slab 2 and be stamped anchor head protective cover 13 and be fixed on the forward and backward anchor plate 4,8; put spheric washer 11 and Ball faced nut 10 behind the anchor plate 4 before pull bar 12 passes and screw; anchor plate 4 before main push-towing rope passes to power by pull bar 12; preceding anchor plate 4 passes to concrete anchorage through unbonded tendon with power by anchor head again; thereby improved the stress of anchor head, reduce stress raisers under the anchor.When prestressed failure appears in anchorage inside, can loosen presstressed reinforcing steel as required, change rope by bundle, and it is convenient to change Suo Jiwei.
Claims (3)
1, a kind of prestressing force anchorage, by presstressed reinforcing steel, anchor slab (2), preceding anchor plate (4), oviduct (7), back anchor plate (8), spiral bar (9), pull bar (12), anchor head protective cover (13) constitutes, it is characterized in that presstressed reinforcing steel adopts unbonded tendon (1), sealing mat (6) is contained in respectively on the unbonded tendon (1), following exposed end, make sealing mat (6) between anchor slab (2), form annular seal space, preceding, support set (5) is housed in the oviduct of back anchor face (7), support set (5) one ends withstand on respectively on the sealing mat (6), its other end passes preceding anchor plate (4) separately, back anchor plate (8) is supported on the anchor slab (2), and antirust oil or anti-corrosive grease are filled with annular seal space.
2, prestressing force anchorage according to claim 1 is characterized in that having in the upper and lower part of forward and backward anchor plate (4), (8) fill orifice (3) of UNICOM's annular seal space.
3, prestressing force anchorage according to claim 1 and 2 is characterized in that preceding anchor plate (4) constitutes by strengthening backing plate and subbolster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97219877 CN2305449Y (en) | 1997-07-16 | 1997-07-16 | Prestress anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97219877 CN2305449Y (en) | 1997-07-16 | 1997-07-16 | Prestress anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2305449Y true CN2305449Y (en) | 1999-01-27 |
Family
ID=33935734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97219877 Expired - Fee Related CN2305449Y (en) | 1997-07-16 | 1997-07-16 | Prestress anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2305449Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1296590C (en) * | 2002-07-16 | 2007-01-24 | 同济大学 | Outer prestress system and its construction process |
| CN1300417C (en) * | 2005-03-28 | 2007-02-14 | 李炳奇 | Permanent anchor rope used for side slope stabilization |
| CN102071651A (en) * | 2010-12-15 | 2011-05-25 | 江苏法尔胜新日制铁缆索有限公司 | Sling replacement method for suspension bridge |
| CN110578296A (en) * | 2019-09-18 | 2019-12-17 | 中交第一公路勘察设计研究院有限公司 | Suspension bridge anchorage main cable strand anchoring device |
| CN111041984A (en) * | 2019-12-01 | 2020-04-21 | 中铁二院工程集团有限责任公司 | Rear anchor surface anchoring system for anchoring main cable of suspension bridge |
| CN111305202A (en) * | 2020-03-18 | 2020-06-19 | 陕西省引汉济渭工程建设有限公司 | Anchor rod-based emergency device for rapid stress of anchor cable and application method thereof |
-
1997
- 1997-07-16 CN CN 97219877 patent/CN2305449Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1296590C (en) * | 2002-07-16 | 2007-01-24 | 同济大学 | Outer prestress system and its construction process |
| CN1300417C (en) * | 2005-03-28 | 2007-02-14 | 李炳奇 | Permanent anchor rope used for side slope stabilization |
| CN102071651A (en) * | 2010-12-15 | 2011-05-25 | 江苏法尔胜新日制铁缆索有限公司 | Sling replacement method for suspension bridge |
| CN102071651B (en) * | 2010-12-15 | 2012-06-27 | 江苏法尔胜新日制铁缆索有限公司 | Sling replacement method for suspension bridge |
| CN110578296A (en) * | 2019-09-18 | 2019-12-17 | 中交第一公路勘察设计研究院有限公司 | Suspension bridge anchorage main cable strand anchoring device |
| CN111041984A (en) * | 2019-12-01 | 2020-04-21 | 中铁二院工程集团有限责任公司 | Rear anchor surface anchoring system for anchoring main cable of suspension bridge |
| CN111305202A (en) * | 2020-03-18 | 2020-06-19 | 陕西省引汉济渭工程建设有限公司 | Anchor rod-based emergency device for rapid stress of anchor cable and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |