CN102286944B - Device for replacing stay cable of cable-stayed bridge - Google Patents
Device for replacing stay cable of cable-stayed bridge Download PDFInfo
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- CN102286944B CN102286944B CN 201110242928 CN201110242928A CN102286944B CN 102286944 B CN102286944 B CN 102286944B CN 201110242928 CN201110242928 CN 201110242928 CN 201110242928 A CN201110242928 A CN 201110242928A CN 102286944 B CN102286944 B CN 102286944B
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- stayed bridge
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- stay
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Abstract
The invention discloses a device for replacing a stay cable of a cable-stayed bridge. The device is used for replacing a stay cable which is to be replaced and is connected to the girder of the cable-stayed bridge, and comprises a tensioning device and a computer data acquisition system which are mounted on the stay cable to be replaced. The device disclosed by the invention has the advantages that (I) the device can control the cable force replacing process in real time through the computer data acquisition system so as to know the cable force at any moment; (II) the device can replace jacks of different tonnages so as to replace the stay cables of different cable forces; and (III) the stay cable replacing device can adapt to the replacement of stay cables of different angles and lengths, and has stronger universality.
Description
Technical field
The present invention relates to a kind of more exchange device of stay cable of cable-stayed bridge, belong to the civil engineering area of maintenance.
Background technology
Cable stayed bridge claims again Cable stayed bridge, is girder directly is pulled in a kind of bridge on the bridge tower with many drag-lines, and be the tower by pressure-bearing, the rope of tension and hold a kind of structural system that curved beam body combines.It can regard that drag-line replaces the multispan elastomeric bearing continuous beam of buttress as.It can make, and moment of flexure reduces in the beam body, reduces building height, has alleviated construction weight, has saved material.Cable stayed bridge is comprised of Sarasota, girder, suspension cable.
In long-term use procedure, various diseases can appear in the suspension cable of cable stayed bridge, mainly comprise: first: upper and lower anchor head gets rusty; Second: the PE sheath is aging, cracking, breakage; The the 3rd: suspension cable protection cylinder internal water accumulation; The 4th: the wind and rain vibration appears in suspension cable; The the 5th: rope axis off normal; The the 6th: Cable Stayed Steel twisted wire or steel wire discontinuity; The 7th: fatigue breaking appears in oblique pulling cable body; The 8th: corrosion appears in suspension cable; The 9th: grease overflows in the cable stayed bridge protection cylinder.
The existence of these diseases of cable stayed bridge makes the security presence hidden trouble of bridge.Sea seal bridge location is crossed over the Zhujiang River in urban centre, GuangZhou, Guangdong Province city, apart from extra large pearl bridge 2.5km, and total length 1114m.Facade is down " Y " type.Adopt fan-shaped rope to arrange, rope is apart from 5m.Bridge floor arranges 6 tracks, wide 35m.Girder adopts the inverted trapezoidal box section.After it used six and half, No. 15 ropes in end bay both sides broke suddenly, and No. 9 rope is lax, and main cause is that cement paste vacancy section and the section of not solidifying are generally arranged at rope top in the PE pipe, causes parallel steel wire that different corrosions is arranged, so carried out changing rope in 1996.As seen, the suspension cable as untimely replacing cable stayed bridge damages will cause the bridge disaster, and still present more changing device to stay cable of cable-stayed bridge still lacks.
Summary of the invention
The objective of the invention is to design a kind of quick replacement device of stay cable of cable-stayed bridge, solve the problem that to change when suspension cable generation disease.
For achieving the above object, the invention provides a kind of device for replacing stay cable of cable-stayed bridge, be used for changing the suspension cable to be changed that is connected on the cable-stayed bridge main-beam, this more changing device comprise tensioning equipment and the computer data acquisition system that is installed on the described suspension cable to be replaced, described tensioning equipment comprises connector, the stretch-draw bar of extending, the vertically-displacable load sensor, the feed-through hydraulic jack, underpin bucket, anchor plate, described vertically-displacable load sensor, the feed-through hydraulic jack, underpining bucket and anchor plate is serially connected in described stretch-draw and extends on the bar, and fix an end by the first ground tackle, the described stretch-draw bar other end of extending is connected with suspension cable to be changed is coaxial by connector, the described both sides that underpin bucket connect cable-stayed bridge main-beam by tension structure, and described vertically-displacable load sensor connects computer data acquisition system.
Described tension structure comprises the hanger that is fixedly connected on the cable-stayed bridge main-beam and underpins two Chain blocks that barrel diagonal arranges along described.
Apparatus of the present invention advantage:
One, can pass through the real-time control cord power of computer data acquisition system Renewal process, know each Suo Li size constantly;
Two, can change the jack of different tonnages, thereby realize the replacing to the suspension cable of different Suo Li;
Three, this stay cable replacing device can adapt to the stay cable replacing of different angles, different length, has stronger universality.
Description of drawings
Fig. 1 is that device for replacing stay cable of cable-stayed bridge of the present invention forms;
Wherein: 1, suspension cable to be changed; 2, steel casing; 3, slushing oil; 4, cable-stayed bridge main-beam; 5, anchor plate; 6, the second ground tackle; 7, hanger; 8, underpin bucket; 9, connector; 10, feed-through hydraulic jack; 11, vertically-displacable load sensor; 12, computer data acquisition system; 13, the stretch-draw bar of extending; 14, Chain block; 15, the first ground tackle.
The specific embodiment
As shown in Figure 1, this stay cable replacing device by the second ground tackle 6, hanger 7, underpin extend bar 13, Chain block 14, the first ground tackle 15 of bucket 8, connector 9, feed-through hydraulic jack 10, vertically-displacable load sensor 11, computer data acquisition system 12, stretch-draw and form.
Concrete arrangement form: the stretch-draw bar 13 of extending is fixed on the suspension cable 1 to be changed by connector 9, make suspension cable 1 to be changed and stretch-draw extend bar 13 on same straight line, hanger 7 is fixed on the cable-stayed bridge main-beam 4, apart from suspension cable 1 root position moderate length, underpining bucket 8 is connected on the hanger 7 by Chain block 14, be separately installed with feed-through hydraulic jack 10, vertically-displacable load sensor 11 and tension ground tackle 15 along the stretch-draw bar 13 of extending underpining bucket 8 outside, vertically-displacable load sensor 11 is positioned at the centre of feed-through hydraulic jack 10 and tension ground tackle 15.
Computer data acquisition system 12 is connecting vertically-displacable load sensor 11, and axis and the extended line thereof of described connector 9, ground tackle 6, the central axis that underpins bucket 8, feed-through hydraulic jack 10, vertically-displacable load sensor 11 and tension ground tackle 15 and cable wire to be changed 1 overlap.
During apparatus of the present invention work, comprise following step:
The first step is installed stay cable replacing device at suspension cable to be replaced, and computer data acquisition system 12 is measured the Suo Li of suspension cable 1 to be replaced.
Second step, unloading---by feed-through hydraulic jack 10 fuel feeding are produced active force, allow the Suo Li of suspension cable 1 to be replaced be born by original anchor point place the second ground tackle 6, convert to gradually by hydraulic jack 10 and bear; The active force that the feed-through hydraulic jack produces along the Load Transfer approach that suspension cable to be replaced makes progress is: feed-through hydraulic jack 10 → underpin bucket 8 → anchor plate 5 → cable-stayed bridge main-beam 4; The active force that the feed-through hydraulic jack produces along the downward power pipeline of suspension cable to be changed is: feed-through hydraulic jack 10 → vertically-displacable load sensor 11 → the first ground tackles 15 → stretch-draw bar 13 → connector 9 → cable wire 1 to be changed of extending; The active force that produces when feed-through hydraulic jack 10 is greater than the Suo Lishi of suspension cable 1 to be replaced, and both the second ground tackle 6 is loosening, and upwards precession the second ground tackle 6 is to anchor plate 5; Then feed-through hydraulic jack 10 oil returns, load is by above-mentioned pipeline back transfer, make the second ground tackle 6 again closely connected with anchor plate 5, suspension cable 1 to be replaced is again stressed, adjust the position of the first ground tackle 15, repeating above-mentioned steps, is zero until computer acquisition equipment 12 shows the Suo Li complete discharge of suspension cable.
The 3rd step, remove old rope, change new rope---after the Suo Li of suspension cable to be replaced unloading is zero, remove old rope beam-ends ground tackle.
The 4th step, new rope loads---and change new suspension cable and changing device more, again feed-through hydraulic jack 10 is applied active force, the active force of feed-through hydraulic jack 10 is drawing the stretch-draw bar 13 of extending and is extending downwards, up revolve the second ground tackle 6 this moment, closely connected with anchor plate 5; When showing new Cable stress, computer data acquisition system reaches the Suo Lishi that first step Computer data collecting system 12 is measured suspension cable 1 to be replaced, the second ground tackle 6 is tightened, then the top power of slow release feed-through hydraulic jack 10, the second ground tackle 6 stops newly recovers contracting, new Suo Shouli finishes the stretch-draw to new rope.
Above-mentioned feed-through hydraulic jack 10 upwards acts on jacking and unloading downwards, all by the extend stress of bar 13 of computer data acquiring control system 12 monitoring stretch-draw, measures simultaneously the Suo Li of suspension cable 1 to be replaced and changes later stay cable force.
Claims (2)
1. device for replacing stay cable of cable-stayed bridge, be used for changing the suspension cable to be changed (1) that is connected on the cable-stayed bridge main-beam (4), it is characterized in that: this more changing device comprise tensioning equipment and the computer data acquisition system (12) that is installed on the described suspension cable to be changed (1), described tensioning equipment comprises connector (9), the stretch-draw bar (13) of extending, vertically-displacable load sensor (11), feed-through hydraulic jack (10), underpin bucket (8) and anchor plate (5), described vertically-displacable load sensor (11), feed-through hydraulic jack (10), underpining bucket (8) and anchor plate (5) is serially connected in described stretch-draw and extends on the bar (13), and fix an end by the first ground tackle (15), described stretch-draw is extended bar (13) other end by connector (9) and coaxial connection of suspension cable to be changed (1), the described both sides that underpin bucket (8) connect cable-stayed bridge main-beam (4) by tension structure, and described vertically-displacable load sensor (11) connects computer data acquisition system (12).
2. a kind of device for replacing stay cable of cable-stayed bridge according to claim 1 is characterized in that: described tension structure comprises the hanger (7) that is fixedly connected on the cable-stayed bridge main-beam (4) and underpins two Chain blocks (14) that bucket (8) diagonal arranges along described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110242928 CN102286944B (en) | 2011-08-23 | 2011-08-23 | Device for replacing stay cable of cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110242928 CN102286944B (en) | 2011-08-23 | 2011-08-23 | Device for replacing stay cable of cable-stayed bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102286944A CN102286944A (en) | 2011-12-21 |
| CN102286944B true CN102286944B (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110242928 Expired - Fee Related CN102286944B (en) | 2011-08-23 | 2011-08-23 | Device for replacing stay cable of cable-stayed bridge |
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| Country | Link |
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| CN (1) | CN102286944B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929057B (en) * | 2015-07-07 | 2017-05-31 | 合肥工业大学 | A kind of pocket device for hoisting for being conveniently replaceable arch bridge suspender |
| CN105544414B (en) * | 2015-12-10 | 2017-03-22 | 中交第二航务工程局有限公司 | Stay cable replacement method based on unstressed cable length |
| CN107201721B (en) * | 2016-03-16 | 2018-10-16 | 中铁十五局集团有限公司 | A kind of suspension cable construction method of installation |
| CN106223214B (en) * | 2016-09-14 | 2018-02-13 | 天津大学 | A kind of suspension cable synchronization uninstalling system and its control method |
| CN107724256A (en) * | 2017-10-30 | 2018-02-23 | 重庆城建控股(集团)有限责任公司 | Suspension cable changes rope technique |
| CN109385961B (en) * | 2018-10-30 | 2024-02-02 | 法尔胜泓昇集团有限公司 | Emergency cable system for quick repair of parallel steel wire stay cable |
| CN111089715B (en) * | 2020-01-10 | 2022-07-15 | 河海大学 | Bridge inhaul cable force detection device and detection method |
| CN114657893B (en) * | 2022-04-26 | 2024-06-25 | 中交一公局集团有限公司 | Stay cable single synchronous tensioning device based on space special-shaped |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054795A (en) * | 2007-05-28 | 2007-10-17 | 重庆交通大学 | Segmentation mounting method for cable of cable stayed bridge and connector for implementing cable segmented connection |
| CN101055216A (en) * | 2007-05-28 | 2007-10-17 | 重庆交通大学 | Cable-stayed bridge cable force automatic monitoring method and device |
| JP2008095400A (en) * | 2006-10-12 | 2008-04-24 | Zenitaka Corp | Diagonal cable removal method |
| CN202214682U (en) * | 2011-08-23 | 2012-05-09 | 河海大学 | A cable-stayed bridge stay cable replacing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040159058A1 (en) * | 2003-02-19 | 2004-08-19 | Jacques Gulbenkian | Unbonded post-tensioning system |
-
2011
- 2011-08-23 CN CN 201110242928 patent/CN102286944B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008095400A (en) * | 2006-10-12 | 2008-04-24 | Zenitaka Corp | Diagonal cable removal method |
| CN101054795A (en) * | 2007-05-28 | 2007-10-17 | 重庆交通大学 | Segmentation mounting method for cable of cable stayed bridge and connector for implementing cable segmented connection |
| CN101055216A (en) * | 2007-05-28 | 2007-10-17 | 重庆交通大学 | Cable-stayed bridge cable force automatic monitoring method and device |
| CN202214682U (en) * | 2011-08-23 | 2012-05-09 | 河海大学 | A cable-stayed bridge stay cable replacing device |
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| Publication number | Publication date |
|---|---|
| CN102286944A (en) | 2011-12-21 |
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