CN102561210B - Carbon fiber bar in-vitro prestressed tensioning device and using method thereof - Google Patents
Carbon fiber bar in-vitro prestressed tensioning device and using method thereof Download PDFInfo
- Publication number
- CN102561210B CN102561210B CN201210013338.1A CN201210013338A CN102561210B CN 102561210 B CN102561210 B CN 102561210B CN 201210013338 A CN201210013338 A CN 201210013338A CN 102561210 B CN102561210 B CN 102561210B
- Authority
- CN
- China
- Prior art keywords
- screw rod
- steel plate
- transmission screw
- power transmission
- carbon fibre
- 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
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a carbon fiber bar in-vitro prestressed tensioning device and a using method thereof. The carbon fiber bar in-vitro prestressed tensioning device comprises a center-hole jack (3) connected with a hydraulic system (11) and a first force transmission screw rod (1) which is arranged in the center-hole jack (3) and can move under the drive of the center-hole jack (3), wherein one end of the first force transmission screw rod (1) is fixed on the center-hole jack (3) through a nut (14), and the other end of the first force transmission screw rod (1) is connected with one end of a second force transmission screw rod (15) through a force transmission mechanism; and the other end of the second force transmission screw rod (15) is connected with an anchoring mechanism for fixing carbon fiber bars. The carbon fiber bar in-vitro prestressed tensioning device disclosed by the invention has the advantages of convenience in construction and short period, and can perform fast reinforcement on a bridge under the situation of not interrupting traffic, reduce the loss caused by interruption of the traffic and further effectively save social and economic cost; and the applied pre-stressing force can be controlled and adjusted timely, the purpose of secondary tensioning is achieved, the whole process is performed on the bridge under the situation of not interrupting the traffic and the social and economic cost is further effectively saved.
Description
Technical field
The present invention relates to a kind of pre-stress stretching device and using method thereof, especially relate to a kind of carbon fibre bar external prestressing tensioning equipment and using method thereof.
Background technology
During external prestressing strengthening bridge construction, need to consider how prestressing force is effectively applied on external muscle, and apply prestressing force by rational stretching mode, this just relates to the stretch-draw problem of external prestressing.Because the tensile strength of carbon fibre bar is high, stretching force is large, in the time of at the bottom of external prestressing carbon fibre bar is arranged in again the beam of bridge construction, how it is implemented to effective stretch-draw, is the key issue that tensioning equipment will solve.Simultaneously, high and the corrosion resistance and good of carbon fibre bar tensile strength, in use, the intensity of itself can not reduce, and in the actual use procedure of engineering structures, it can be under different stresses, and the size of external prestressing also can need to carry out certain adjustment, so this just requires a new job practices to meet.
Summary of the invention
The present invention is mainly that to solve the existing tensile strength due to carbon fibre bar of prior art high, and stretching force is large, and in the time of at the bottom of external prestressing carbon fibre bar is arranged in again the beam of bridge construction, conventional art can not be implemented the technical problem of effective stretch-draw etc. to it; Provide a kind of easy construction and cycle short, can the in the situation that of uninterrupted traffic, to bridge, reinforce fast, reduce the loss bringing because suspending traffic, thereby effectively save social economy's cost, simultaneously, stretching process is controlled, can guarantee carbon fibre bar external prestressing tensioning equipment and the using method thereof of the whole mechanical balance of device and the loading safety of structure.
It is to solve the high and corrosion resistance and good of the existing carbon fibre bar tensile strength of prior art that the present invention also has an object, in use, the intensity of itself can not reduce, and in the actual use procedure of engineering structures, it can be under different stresses, the size of external prestressing also can need to carry out certain adjustment, the technical problem that conventional art can not carry out effectively adjusting etc. to the size of external prestressing; Provide a kind of and simple to operately can control and adjustment applies prestressed size fast in good time, reached can two times tensioning object carbon fibre bar external prestressing tensioning equipment and using method thereof.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
An external prestressing tensioning equipment, is characterized in that, comprises that one is connected with the punching jack of hydraulic system and is arranged on the first power transmission screw rod that can move in punching jack under punching jack drives; Described first power transmission screw rod one end is fixed on punching jack by nut, and the other end is connected with second power transmission screw rod one end by a force transmission mechanism; The described second power transmission screw rod other end is connected with the anchoring mechanism for fixed carbon fiber bar.
At above-mentioned a kind of carbon fibre bar external prestressing tensioning equipment, described force transmission mechanism comprises a U-shaped reaction frame and is arranged on the bearing plate on the soffit of girder, and described U-shaped reaction frame bottom contacts with bearing plate and forms a square cavity in bearing plate; In described square cavity, be provided with a branch sleeve, the above-mentioned first power transmission screw rod other end inserts branch sleeve threaded one end through U-shaped reaction frame and fixes; Above-mentioned second power transmission screw rod one end is fixed through bearing plate and branch sleeve other end screw thread; Described the second power transmission screw rod is also provided with hold-down nut through on one end of bearing plate.
At above-mentioned a kind of carbon fibre bar external prestressing tensioning equipment, described anchoring mechanism comprise two symmetrically arranged anchorage screws and two respectively with fixing the first steel plate and the second steel plate in anchorage screw two ends, between described the first steel plate and the second steel plate, be also provided with respectively the 3rd steel plate being connected and fixed with anchorage screw, the other end of above-mentioned the second power transmission screw rod is fixed by nut and described the first steel plate, described the 3rd steel plate is provided with locating hole, the ground tackle that is fixed with carbon fibre bar be arranged between the second steel plate and the 3rd steel plate and the carbon fibre bar one end of stretching out ground tackle through locating hole.
A using method for carbon fibre bar external prestressing tensioning equipment, is characterized in that, comprises the following steps:
Installation steps:
Installation steps 1, connect together the first steel plate, the second steel plate and the 3rd steel plate by anchorage screw and nut, then ground tackle is placed between the second adjacent steel plate and the 3rd steel plate, finally the second power transmission screw rod are connected with the first steel plate;
Installation steps 2, are connected branch sleeve, more U-shaped reaction frame are fixed to position with the second power transmission screw rod being connected with the first steel plate, the first power transmission screw rod through punching jack is placed in to U-shaped reaction frame, and is connected with branch sleeve;
Installation steps 3, are placed in punching jack, steel cushion block and nut the first power transmission screw rod of outermost end successively;
Operating procedure:
Operating procedure 1, primer fluid pressing system, exerts pressure to punching jack by hydraulic system, drives the first power transmission screw rod, the second power transmission screw rod to carry out tractive to anchoring mechanism;
Operating procedure 2, reaches after design load until the stress of carbon fibre bar, closes hydraulic system, the hold-down nut in U-shaped reaction frame is tightened, then by the first power transmission screw rod from branch sleeve, take out;
Operating procedure 3, the U-shaped reaction frame of removal and branch sleeve, applied prestressed carbon fibre bar and be firmly anchored on bearing plate successively.
Therefore, tool of the present invention has the following advantages: 1. easy construction and cycle are short, can the in the situation that of uninterrupted traffic, to bridge, reinforce fast, reduce the loss bringing because suspending traffic, thereby effectively save social economy's cost, meanwhile, stretching process is controlled, can guarantee the whole mechanical balance of device and the loading safety of structure; 2. simple to operately can control and adjustment applies prestressed size fast in good time, reached can two times tensioning object.
Accompanying drawing explanation
Fig. 1 is a kind of main TV structure schematic diagram of the present invention.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.In figure, the first power transmission screw rod 1, steel cushion block 2, punching jack 3, U-shaped reaction frame 4, branch sleeve 5, hold-down nut 6, the first steel plate 7, ground tackle 8, carbon fibre bar 9, bearing plate 10, hydraulic system 11, the second steel plate 12, the 3rd steel plate 13, nut 14, the second power transmission screw rod 15, anchorage screw 16.
Embodiment:
Paper is the structure of tensioning equipment used in the present invention once: comprise that one is connected with the punching jack 3 of hydraulic system 11 and is arranged on the interior first power transmission screw rod 1 that can move of punching jack 3 under punching jack 3 drives; Described first power transmission screw rod 1 one end is fixed on punching jack 3 by nut 14, and the other end is connected with second power transmission screw rod 15 one end by a force transmission mechanism; Described second power transmission screw rod 15 other ends are connected with the anchoring mechanism for fixed carbon fiber bar.
Force transmission mechanism comprises a U-shaped reaction frame 4 and is arranged on the bearing plate 10 on the soffit of girder, and described U-shaped reaction frame 4 bottoms contact with bearing plate 10 and form a square cavity in bearing plate 10; In square cavity, be provided with a branch sleeve 5, above-mentioned first power transmission screw rod 1 other end inserts branch sleeve 5 threaded one ends through U-shaped reaction frame 4 and fixes; Above-mentioned second power transmission screw rod 15 one end are fixed through bearing plate 10 and branch sleeve 5 other end screw threads; The second power transmission screw rod 15 is also provided with hold-down nut 6 through on one end of bearing plate 10.Anchoring mechanism comprise two symmetrically arranged anchorage screws 16 and two respectively with fixing the first steel plate 7 and the second steel plate 12 in anchorage screw 16 two ends, between described the first steel plate 7 and the second steel plate 12, be also provided with respectively the 3rd steel plate 13 being connected and fixed with anchorage screw 16, the other end of the second power transmission screw rod 15 is fixing by nut 14 and the first steel plate 7, described the 3rd steel plate 13 is provided with locating hole, the ground tackle that is fixed with carbon fibre bar 9 be arranged between the second steel plate 12 and the 3rd steel plate 13 and carbon fibre bar 9 one end of stretching out ground tackle through locating hole.
During use, comprise installation steps and operating procedure:
1. installation steps:
Installation steps 1, connect together the first steel plate 7, the second steel plate 12 and the 3rd steel plate 13 by anchorage screw 16 and nut 14, then ground tackle 8 is placed between adjacent the second steel plate 12 and the 3rd steel plate 13, finally the second power transmission screw rod 15 are connected with the first steel plate 7;
Installation steps 2, are connected branch sleeve 5, more U-shaped reaction frame 4 are fixed to position with the second power transmission screw rod 15 being connected with the first steel plate 7, the first power transmission screw rod 1 through punching jack 3 is placed in to U-shaped reaction frame 4, and is connected with branch sleeve 5;
Installation steps 3, are placed in punching jack 3, steel cushion block 2 and nut 14 the first power transmission screw rod 1 of outermost end successively;
2. operating procedure:
Operating procedure 1, primer fluid pressing system 11, exerts pressure by 11 pairs of punching jack 3 of hydraulic system, drives the first power transmission screw rod 1,15 pairs of anchoring mechanisms of the second power transmission screw rod to carry out tractive;
Operating procedure 2, reaches after design load until the stress of carbon fibre bar 9, closes hydraulic system 11, the hold-down nut 6 in U-shaped reaction frame 4 is tightened, then the first power transmission screw rod 1 in 3 is taken out from branch sleeve 5;
Operating procedure 3, the U-shaped reaction frame 4 of removal and branch sleeve 5, applied prestressed carbon fibre bar 9 and be firmly anchored on bearing plate 10 successively.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although more used the terms such as the first power transmission screw rod 1, steel cushion block 2, punching jack 3, U-shaped reaction frame 4, branch sleeve 5, hold-down nut 6, the first steel plate 7, ground tackle 8, carbon fibre bar 9, bearing plate 10, hydraulic system 11, the second steel plate 12, the 3rd steel plate 13, nut 14, the second power transmission screw rod 15, anchorage screw 16 herein, do not got rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (2)
1. a carbon fibre bar external prestressing tensioning equipment, it is characterized in that, comprise that one is connected with the punching jack (3) of hydraulic system (11) and is arranged on the first power transmission screw rod (1) that can move in punching jack (3) under punching jack (3) drives; It is upper that described first power transmission screw rod (1) one end is fixed on punching jack (3) by nut (14), and the other end is connected with second power transmission screw rod (15) one end by a force transmission mechanism; Described second power transmission screw rod (15) other end is connected with the anchoring mechanism for fixed carbon fiber bar;
Described force transmission mechanism comprises a U-shaped reaction frame (4) and is arranged on the bearing plate (10) on the soffit of girder, and described U-shaped reaction frame (4) bottom contacts with bearing plate (10) and forms a square cavity with bearing plate (10); In described square cavity, be provided with a branch sleeve (5), above-mentioned first power transmission screw rod (1) other end inserts branch sleeve (5) threaded one end through U-shaped reaction frame (4) and fixes; Above-mentioned second power transmission screw rod (15) one end is fixed through bearing plate (10) and the other end screw thread of branch sleeve (5); Described the second power transmission screw rod (15) is also provided with hold-down nut (6) through on one end of bearing plate (10);
Described anchoring mechanism comprise two symmetrically arranged anchorage screws (16) and two respectively with anchorage screw (16) two ends fixation steel plate, wherein one is the first steel plate (7), another piece is the second steel plate (12); Between described the first steel plate (7) and the second steel plate (12), be also provided with respectively the 3rd steel plate (13) being connected and fixed with anchorage screw (16), the other end of above-mentioned the second power transmission screw rod (15) is fixing by nut (14) and described the first steel plate (7), described the 3rd steel plate (13) is provided with locating hole, the ground tackle that is fixed with carbon fibre bar (9) be arranged between the second steel plate (12) and the 3rd steel plate (13) and carbon fibre bar (9) one end of stretching out ground tackle through locating hole.
2. a using method for a kind of carbon fibre bar external prestressing tensioning equipment claimed in claim 1, is characterized in that, comprises the following steps:
Installation steps:
Installation steps 1, the first steel plate (7), the second steel plate (12) and the 3rd steel plate (13) are connected together by anchorage screw (16) and nut (14), ground tackle (8) is placed between adjacent the second steel plate (12) and the 3rd steel plate (13) again, finally the second power transmission screw rod (15) is connected with the first steel plate (7);
Installation steps 2, branch sleeve (5) is connected with the second power transmission screw rod (15) being connected with the first steel plate (7), again U-shaped reaction frame (4) is fixed to position, to be placed in U-shaped reaction frame (4) through the first power transmission screw rod (1) of punching jack (3), and be connected with branch sleeve (5);
Installation steps 3, are placed in punching jack (3), steel cushion block (2) and nut (14) the first power transmission screw rod (1) of outermost end successively;
Operating procedure:
Operating procedure 1, primer fluid pressing system (11), exerts pressure to punching jack (3) by hydraulic system (11), drives the first power transmission screw rod (1), the second power transmission screw rod (15) to carry out tractive to anchoring mechanism;
Operating procedure 2, reaches after design load until the stress of carbon fibre bar (9), closes hydraulic system (11), the hold-down nut (6) in U-shaped reaction frame 4 is tightened, then the first power transmission screw rod (1) in (3) is taken out from branch sleeve (5);
Operating procedure 3, the U-shaped reaction frame of removal (4) and branch sleeve (5), applied prestressed carbon fibre bar (9) and be firmly anchored on bearing plate (10) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210013338.1A CN102561210B (en) | 2012-01-17 | 2012-01-17 | Carbon fiber bar in-vitro prestressed tensioning device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210013338.1A CN102561210B (en) | 2012-01-17 | 2012-01-17 | Carbon fiber bar in-vitro prestressed tensioning device and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102561210A CN102561210A (en) | 2012-07-11 |
| CN102561210B true CN102561210B (en) | 2014-02-05 |
Family
ID=46407695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210013338.1A Expired - Fee Related CN102561210B (en) | 2012-01-17 | 2012-01-17 | Carbon fiber bar in-vitro prestressed tensioning device and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102561210B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255718B (en) * | 2013-04-28 | 2015-04-08 | 中交第三公路工程局有限公司 | Pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device and tensioning technology |
| CN106436587B (en) * | 2016-08-22 | 2019-03-05 | 江西赣粤高速公路股份有限公司 | Loop chain type prestress rope automatic synchronization tensioning system and method |
| CN106149575A (en) * | 2016-08-22 | 2016-11-23 | 东南大学 | Prestress rope tensioning system and method |
| CN106906755B (en) * | 2017-03-31 | 2018-12-21 | 浦江恒建新材料科技有限公司 | A kind of bridge equipment |
| CN108823383A (en) * | 2018-07-09 | 2018-11-16 | 西北工业大学 | Improve the prestress application device of thin-wall part milling stability |
| CN111894302A (en) * | 2020-08-17 | 2020-11-06 | 哈尔滨工业大学 | Cable dismantling device and method |
| CN114428015B (en) * | 2022-01-06 | 2024-02-06 | 中国建筑第八工程局有限公司 | Device and method for testing prestress loss of carbon fiber reinforced composite bar |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048576A (en) * | 1989-07-04 | 1991-01-16 | 太原机械学院 | Hydraulic stretching machine for single steel bar of sleeper |
| JP2007231683A (en) * | 2006-03-03 | 2007-09-13 | Yokogawa Koji Kk | Tension anchoring connection method of connected member by wire |
| CN201627120U (en) * | 2009-12-15 | 2010-11-10 | 北京中铁房山桥梁有限公司 | Prestress transverse stretching device for ladder sleepers |
| JP5416016B2 (en) * | 2010-04-01 | 2014-02-12 | 鹿島建設株式会社 | Ground anchor re-tensioning apparatus and method |
| CN101851985B (en) * | 2010-05-27 | 2012-08-08 | 卓清 | Articulated anchor and prestress tensioning method of high strength fibre composite sheet |
| CN102152396A (en) * | 2011-01-10 | 2011-08-17 | 昆明沃特尔机电设备有限公司 | Mobile prestressed steel strand tension device |
-
2012
- 2012-01-17 CN CN201210013338.1A patent/CN102561210B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102561210A (en) | 2012-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102561210B (en) | Carbon fiber bar in-vitro prestressed tensioning device and using method thereof | |
| CN203320978U (en) | Tensioning and anchoring device for prestressed carbon fiber sheet reinforced long-span concrete structure | |
| CN207862749U (en) | A kind of novel combination type sunpender | |
| CN101215824A (en) | External transverse tension prestressing force device for regulating and controlling large-span continuous steel bridge post deflection | |
| CN109750791A (en) | A kind of assembled large overhanging steel structure | |
| CN202090290U (en) | Tool for tensioning prestressing steel bar | |
| CN107724258B (en) | Prestressing force carbon fiber stretching device | |
| CN103306495B (en) | Wooden construction truncated cylinder reinforced construction method | |
| CN202017304U (en) | Automatic centering tensioning anchoring device for prestress sheet material clamp type anchor | |
| CN102127950B (en) | Automatic centering tensioning and anchoring device for prestressed sheet clamping anchorage | |
| CN202047376U (en) | Walking rail device for hanging basket forward shifting | |
| CN205955228U (en) | Prestressing force stretch -draw and anchor of carbon cloth | |
| CN102505858A (en) | Pre-stressing carbon-cloth tension system and tension reinforcing method | |
| CN203007855U (en) | Stretch-draw anchoring system of pre-stress fiber composite plate | |
| CN103147412B (en) | A kind of carbon fibre bar external prestressing stretching and anchoring device and anchoring process | |
| CN217579818U (en) | Pier reinforcing apparatus | |
| CN202644401U (en) | Omnipotent prestress stretch-draw connecting structure for finish-rolling screw-thread steel | |
| CN110886185A (en) | Box girder with anchoring device and box girder bridge | |
| CN206458118U (en) | A kind of pre-stress fibre sheet combination assembled tensioning equipment | |
| CN201649685U (en) | Apparatus for reinforcing beam by a prestressed carbon fiber board | |
| CN204402056U (en) | A kind of novel pre-stressed carbon cloth tensioning equipment | |
| CN102817315B (en) | Support flexible anchoring system | |
| CN202755310U (en) | Flexible anchoring system for support | |
| CN115680314B (en) | Steel beam external prestress rib reinforcing steering block and reinforcing method | |
| CN103266571B (en) | A kind of gap bridge type steel strand stopping means |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20140205 Termination date: 20170117 |