CN103184724B - Adjustable damping device of external prestressing cable during bridge reinforcement - Google Patents
Adjustable damping device of external prestressing cable during bridge reinforcement Download PDFInfo
- Publication number
- CN103184724B CN103184724B CN201210555173.0A CN201210555173A CN103184724B CN 103184724 B CN103184724 B CN 103184724B CN 201210555173 A CN201210555173 A CN 201210555173A CN 103184724 B CN103184724 B CN 103184724B
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- Prior art keywords
- supports
- bolt
- cable
- external prestressing
- external
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- Expired - Fee Related
Links
- 238000013016 damping Methods 0.000 title claims abstract description 9
- 230000002787 reinforcement Effects 0.000 title abstract 4
- 210000002435 tendon Anatomy 0.000 claims description 17
- 238000005728 strengthening Methods 0.000 claims description 10
- 230000009467 reduction Effects 0.000 claims description 9
- 230000008859 change Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004873 anchoring Methods 0.000 abstract 4
- 238000010923 batch production Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 244000062793 Sorghum vulgare Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 235000019713 millet Nutrition 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an adjustable damping device of an external prestressing cable during bridge reinforcement. The adjustable damping device of the external prestressing cable during the bridge reinforcement comprises two semicircular cable clips, supports, connecting plates, anchoring plates and bolts; the cable clips are movably connected with one end of each of the supports through the bolt; the other ends of the supports are movably connected with the anchoring plates through the connecting plates; the anchoring plates are fixedly connected with a supporting body through the bolts; the moveable supports comprise two supports with bolt holes on both sides thereof, and form a triangle with a supporting surface; two feet of the movable supports are in bolt connection with the anchoring plates through the connecting plates; the distance between the two support feet is adjustable, so that the shape of the triangle can be changed to adapt to change of the distance between the centers of the cable clips and the supporting surface; a junction end of the supports is connected with the cable clips through the bolt; and the bolts are adjusted to rotate the cable clips so as to adapt to the inclination angle of the external cable. The adjustable damping device of the external prestressing cable during the bridge reinforcement is high in adaptability; and on-site lofting manufacturing is not required and batch production can be achieved, so that the free length of the external cable can be reduced and the damping effect can be achieved.
Description
Technical field
The present invention relates to bridge strengthening construction technology, be specifically related to the adjustable vibration reduction device of external prestressing tendon in a kind of bridge strengthening.
Background technology
The reinforcing of prestressed concrete and Reinforced Concrete Bridge often adopts external prestressing strengthening, and this just needs to arrange external prestressing cable wire near beam rib or web, generally cable wire is arranged to linear or fold-line-shaped, usual tens meters of rope length, rice up to a hundred.The effect that external tendon is passed a bridge due to deadweight and vehicle can be vibrated, and the length of rope is longer, vibrates larger, can have a negative impact like this to the stressed of rope and application life.Need every several meters, rope to be fixed with cord clip, to reduce drift and sagging, play the vibration damping to external tendon and supporting role.Cord clip is by bracket supports, the bearing surface fine strain of millet rib that distance external tendon is nearest often or web, due to fine strain of millet rib Varying-thickness often, by the distance that causes between external tendon center line and bearing surface not etc., make stent length also inconsistent, if external tendon has inclination, cord clip also must have same inclination, very inconvenient during construction and installation, field lofting blanking can only make, to take a lot of work and time-consuming.
Summary of the invention
The object of the invention is to the shortcoming and defect overcoming prior art existence, the adjustable vibration reduction device of external prestressing tendon in a kind of bridge strengthening is provided, convenient and swift during the construction and installation of this device, without the need to field lofting, saving of work and time.
The present invention is achieved through the following technical solutions:
In bridge strengthening, an adjustable vibration reduction device for external prestressing tendon, comprises the cord clip of two semicircles, support, junction plate, anchor plate, bolt; Described cord clip is flexibly connected with one end of support by bolt, and the other end of support is flexibly connected with anchor plate by junction plate; Described anchor plate is fixedly connected with supporting mass by bolt.
Described cord clip inwall is lined with damping rubber.
The present invention has the following advantages compared with prior art:
(1) support of the present invention is two, its two ends are movable, triangular supports is formed with supporting mass (sidewall or bottom as case beam), by changing the spacing between two anchor plates, change the shape of A-frame, thus the distance between adjustment cord clip to bearing surface, to adapt to the situation of change of the spacing of bearing surface and external prestressing tendon center line, facilitate batch micro operations and construction.
(2) gradient of support and the adjustable cord clip of cord clip connecting bolt is utilized, to adapt to the requirement of external prestressing tendon piecewise dam axis.
Accompanying drawing explanation
Fig. 1 is the side schematic view of the adjustable vibration reduction device of external prestressing tendon in bridge strengthening of the present invention;
Fig. 2 is the schematic cross-section of Fig. 1.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is more specifically described in detail.
Embodiment
As shown in Figure 1, 2.The adjustable vibration reduction device of external prestressing tendon in bridge strengthening of the present invention, comprises the cord clip 1 of two semicircles, support 2, junction plate 3, anchor plate 4, bolt; Described cord clip 1 is flexibly connected by bolt one end with support 2, and the other end of support 2 is flexibly connected with anchor plate 4 by junction plate 3; Described anchor plate 4 is fixedly connected with supporting mass by bolt, is lined with damping rubber 5 at cord clip 1 inwall.
Making of the present invention and installation process as follows:
Cord clip 1 manufactures substantially the same with general cord clip, is made up of two halves, and adopt steel plate to make, size is determined by the diameter of rope.Cord clip 1 only arranges a bolt, to make cord clip 1 rotate with the connection of support 2.The other end of cord clip 1 has two slightly little bolts to connect two halves cord clip 1, and parrel is tight.
Support 2 adopts two panels two ends to have the steel plate of bolt hole to make, and form triangle, one end intersection of support 2 is connected with cord clip 1 with bolt, and the other end is connected with bolt by the junction plate 3 on anchor plate 4.The minimum length of support 2 is determined by the maximum spacing between external prestressing tendon center line and bearing surface (sidewall of case beam or bottom).Anchor plate 4 is fixed by the crab-bolt implanted in concrete, when crab-bolt and concrete reinforcing steel disturb, also can chisel the topping of reinforcing bar in concrete bodies, directly or indirectly be welded on reinforcing bar, then repair with epoxy mortar.
During installation, adjustment anchor plate 4(anchor plate 4 is made up of two block plates) spacing, thus change the triangle of support 2, to adapt to the change of the distance H of external prestressing tendon and bearing surface (sidewall of case beam or bottom).When external prestressing tendon tilts, adjustable cord clip 1 and the connecting bolt of support 2, to adapt to the gradient a of external prestressing tendon, finally by all bolton, be welded bolt if desired.This external prestressing tendon adjustable vibration reduction device can be mass.
Just the present invention can be realized preferably as mentioned above.
Embodiments of the present invention are not restricted to the described embodiments; other are any do not deviate from Spirit Essence of the present invention and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (2)
1. the adjustable vibration reduction device of external prestressing tendon in bridge strengthening, is characterized in that, comprise the cord clip of two semicircles, support, junction plate, anchor plate, bolt; Described cord clip is flexibly connected with one end of support by bolt, and the other end of support is flexibly connected with anchor plate by junction plate; Described anchor plate is fixedly connected with supporting mass by bolt;
Described support is two, forms triangular supports with supporting mass.
2. the adjustable vibration reduction device of external prestressing tendon in bridge strengthening according to claim 1, it is characterized in that, described cord clip inwall is lined with damping rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210555173.0A CN103184724B (en) | 2012-12-19 | 2012-12-19 | Adjustable damping device of external prestressing cable during bridge reinforcement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210555173.0A CN103184724B (en) | 2012-12-19 | 2012-12-19 | Adjustable damping device of external prestressing cable during bridge reinforcement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103184724A CN103184724A (en) | 2013-07-03 |
| CN103184724B true CN103184724B (en) | 2015-04-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210555173.0A Expired - Fee Related CN103184724B (en) | 2012-12-19 | 2012-12-19 | Adjustable damping device of external prestressing cable during bridge reinforcement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103184724B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629398B (en) * | 2018-12-26 | 2020-12-29 | 石家庄铁道大学 | External prestress reinforcing device of six-four type railway military beam |
| CN118326816B (en) * | 2024-06-12 | 2024-08-30 | 湖北楚天联发路桥养护有限公司 | Anti-seismic device for bridge external prestressed cable |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060053030A (en) * | 2004-11-13 | 2006-05-19 | 아주대학교산학협력단 | Net type external prestress strengthening apparatus and method for slab bridges |
| JP2007224587A (en) * | 2006-02-23 | 2007-09-06 | Nippon Colgate Kk | Reinforcing structure for external cable of prestressed concrete bridge, and reinforcing method for constructing reinforcing structure |
| CN201031357Y (en) * | 2007-02-27 | 2008-03-05 | 宁波杉工结构监测与控制工程中心有限公司 | Stayd-cable bridge backstay cable uniaxial two-dimension shock-absorbing device |
| CN101173505A (en) * | 2007-11-22 | 2008-05-07 | 中国第一冶金建设有限责任公司 | Construction method for chamber type bridge maintaining external pre-stress |
| CN101613991A (en) * | 2008-06-23 | 2009-12-30 | 同济大学 | Lever-type gain device for damper |
| CN201981476U (en) * | 2011-04-08 | 2011-09-21 | 湖北省交通规划设计院 | Convenient-to-install stay cable lever mass vibration absorber |
| CN202064270U (en) * | 2011-01-27 | 2011-12-07 | 同济大学 | Steering gear of adjustable prestress |
| CN102561184A (en) * | 2011-12-30 | 2012-07-11 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Vertical shock absorption device with external stayed cable |
| CN102776837A (en) * | 2012-08-13 | 2012-11-14 | 长安大学 | Stay cable damping system based on damping auxiliary ropes |
| CN203213002U (en) * | 2012-12-19 | 2013-09-25 | 华南理工大学 | Adjustable vibration damping apparatus of external pre-stressed cable for bridge reinforcement |
-
2012
- 2012-12-19 CN CN201210555173.0A patent/CN103184724B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060053030A (en) * | 2004-11-13 | 2006-05-19 | 아주대학교산학협력단 | Net type external prestress strengthening apparatus and method for slab bridges |
| JP2007224587A (en) * | 2006-02-23 | 2007-09-06 | Nippon Colgate Kk | Reinforcing structure for external cable of prestressed concrete bridge, and reinforcing method for constructing reinforcing structure |
| CN201031357Y (en) * | 2007-02-27 | 2008-03-05 | 宁波杉工结构监测与控制工程中心有限公司 | Stayd-cable bridge backstay cable uniaxial two-dimension shock-absorbing device |
| CN101173505A (en) * | 2007-11-22 | 2008-05-07 | 中国第一冶金建设有限责任公司 | Construction method for chamber type bridge maintaining external pre-stress |
| CN101613991A (en) * | 2008-06-23 | 2009-12-30 | 同济大学 | Lever-type gain device for damper |
| CN202064270U (en) * | 2011-01-27 | 2011-12-07 | 同济大学 | Steering gear of adjustable prestress |
| CN201981476U (en) * | 2011-04-08 | 2011-09-21 | 湖北省交通规划设计院 | Convenient-to-install stay cable lever mass vibration absorber |
| CN102561184A (en) * | 2011-12-30 | 2012-07-11 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Vertical shock absorption device with external stayed cable |
| CN102776837A (en) * | 2012-08-13 | 2012-11-14 | 长安大学 | Stay cable damping system based on damping auxiliary ropes |
| CN203213002U (en) * | 2012-12-19 | 2013-09-25 | 华南理工大学 | Adjustable vibration damping apparatus of external pre-stressed cable for bridge reinforcement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103184724A (en) | 2013-07-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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Effective date of registration: 20220913 Address after: Room 504, No. 6, Fifth Lane, Suinan New Village, Tangxia, Tianhe District, Guangzhou City, Guangdong Province, 510665 Patentee after: Guangdong Golden Shield Reinforcement Engineering Co.,Ltd. Address before: 510640 No. five, 381 mountain road, Guangzhou, Guangdong, Tianhe District Patentee before: SOUTH CHINA University OF TECHNOLOGY |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 |