CN108708283A - A kind of bridge prestress porous anchor installation method - Google Patents
A kind of bridge prestress porous anchor installation method Download PDFInfo
- Publication number
- CN108708283A CN108708283A CN201810499769.0A CN201810499769A CN108708283A CN 108708283 A CN108708283 A CN 108708283A CN 201810499769 A CN201810499769 A CN 201810499769A CN 108708283 A CN108708283 A CN 108708283A
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- CN
- China
- Prior art keywords
- steel strand
- strand wires
- fixing piece
- deconcentrator
- anchor
- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention discloses a kind of bridge prestress porous anchor installation method, including step:Installment work anchor, the work anchor are moved to behind design requirement position and are locked the work anchor and steel strand wires using intermediate plate;Each steel strand wires are separated by deconcentrator and are combed, the steel strand wires are passed through one by one after adjusting limiting plate duct angle, remove the deconcentrator, and the limiting plate is moved to design requirement position;All steel strand wires are penetrated into jack, and the jack is moved to design requirement position;Each steel strand wires are separated by the deconcentrator and are combed, and by the steel strand wires behind moveable anchor duct, remove the deconcentrator, the moveable anchor is moved to behind design requirement position and is locked the work anchor and the steel strand wires using intermediate plate;Heretofore described deconcentrator can in porous anchor installation process multiple installing and dismounting, it is effective to shorten the porous anchor installation time, improve prestress wire tensioning working efficiency.
Description
Technical field
The present invention relates to building engineering fields, and in particular to a kind of bridge prestress porous anchor installation method.
Background technology
Prestressing force is referred to as the lifeline of Longspan Bridge, and porous group's anchor is more and more extensive in engineering to be applied.It passes
The anchorage installation method of system be by a branch of interior steel strand wires number, then successively installment work anchor, limiting plate, stretch-draw jack,
To avoid steel strand wires dislocation winding occurs for moveable anchor.However, hole count is more, steel strand wires are more, and the difficulty of anchorage installation is bigger.
And working at height is belonged in cantilever cast-in-situ continuous beam work progress, anchorage installation is not easy to operate, takes longer.According to scene
Construction statistics, work anchor, limiting plate, jack, the moveable anchor of a branch of 15 steel strand wires install, and at least to take 30~45
Minute or more, the stretching construction efficiency seriously limited.
When practice of construction carries out the installation of limiting plate and moveable anchor, since work anchor carries out really the sequence of steel strand wires
It is fixed, and each steel strand wires are generally different in size, steel easily occur when being installed to limiting plate and moveable anchor by steel strand wires end
The generation of phenomena such as twisted wire serial number setup error, adjacent steel strand wires misdraw position, result even in steel strands wound in drawing process.
In view of drawbacks described above, creator of the present invention obtains the present invention finally by prolonged research and practice.
Invention content
To solve above-mentioned technological deficiency, the technical solution adopted by the present invention is, provides a kind of porous anchor of bridge prestress
Have installation method, including step:
S1, installment work anchor, the work anchor use intermediate plate by the work anchor and steel after being moved to design requirement position
Twisted wire is locked;
Each steel strand wires are separated by deconcentrator and are combed, twist the steel after adjusting limiting plate duct angle by S2
Line passes through one by one, removes the deconcentrator, and the limiting plate is moved to design requirement position;
All steel strand wires are penetrated jack, and the jack are moved to design requirement position by S3;
Each steel strand wires are separated by the deconcentrator and are combed, and the steel strand wires are passed through moveable anchor one by one by S4
Behind duct, the deconcentrator is removed, the moveable anchor uses intermediate plate by the work anchor and institute after being moved to design requirement position
State steel strand wires locking.
Preferably, the deconcentrator includes the fixing piece being arranged in pairs, the fixing piece is in forked, and the fixing piece includes
Gap, the isolation part is arranged between the adjacent isolation part in several strip isolation parts and the interconnecting piece for connecting the isolation part
The steel strand wires are isolated and the steel strand wires are arranged in the gap.
Preferably, the segmentation procedures of the deconcentrator are, the fixing piece includes the first fixing piece and the second fixing piece, will
First fixing piece is inserted into the steel strand wires, will be in the conplane steel strand wires and is arranged in the same gap
Interior, first fixing piece separates the steel strand wires in several regions;Second fixing piece and described first are consolidated
Determine part to intersect in the insertion steel strand wires, the steel strand wires in the same region are arranged again by first fixing piece
Separated by second fixing piece, described in the adjacent isolation part of first fixing piece and the adjacent of second fixing piece
Isolation part intersects to form through-hole, and the steel strand wires are interposed between by the isolated part in the different through-holes.
Preferably, after the fixing piece intersected separating the steel strand wires, by by the fixing piece from the work anchor
Installation site is moved to moveable anchor installation site direction up to the steel strand wires end, to complete the deconcentrator to institute
State the carding operation of steel strand wires.
Preferably, the deconcentrator is additionally provided with connection component, between first fixing piece and second fixing piece
The connection component detachable connection can be passed through.
Preferably, the connection component includes the first clamping portion and the second clamping portion, the first clamping portion setting connection
Several clamping blocks are arranged in hole, second clamping portion, and the clamping block and the connecting hole are correspondingly arranged, by by the clamping
Block is clamped interior to realize the connection of first clamping portion and second clamping portion into the connecting hole.
Preferably, the connecting hole is set as circular hole, the clamping block annular is uniformly distributed, the clamping block setting support portion and
Fixed part, the fixed part are fixed on by the support portion on the surface of the fixing piece, and the fixed part passes through the branch
Position change occurs for the deformation of support part.
Preferably, maximum distance between the support portion is less than the diameter dimension of the connecting hole, the fixed part it
Between maximum distance be more than the connecting hole diameter dimension, the fixed part may pass through in the case of the support portion deformation
The connecting hole is simultaneously clamped with the connecting hole edge.
Preferably, fillet surface is arranged in the fixed part, the fillet surface is set as arc surface, and the fillet surface is along far from institute
State the inwardly angled gathering in direction of support portion.
Preferably, second clamping portion also sets up briquetting, the briquetting setting is uniformly distributed in the clamping block annular
Central axis on, and the briquetting is connect with the fixed part, and the coupling part of the briquetting and the fixed part can
Plastic deformation.
Compared with the prior art the beneficial effects of the present invention are:1, the structure of heretofore described deconcentrator can be porous
Multiple installing and dismounting during anchorage installation, it is easy to disassemble to avoid to institute while ensureing to separate positioning to the steel strand wires
The influence of limiting plate and moveable anchor movement installation is stated, it is effective to shorten the porous anchor installation time, improve prestressing force
Steel strand tension working efficiency;2, the split settings of second fixing piece and first fixing piece, the deconcentrator can show
Field suitably adjusts the cross angle between second fixing piece and first fixing piece according to the concrete model of porous anchor
To realize that the deconcentrator preferably separates locating effect.
Description of the drawings
Fig. 1 is the schematic diagram of the bridge prestress porous anchor installation method step S1;
Fig. 2 is the schematic diagram of the bridge prestress porous anchor installation method step S2;
Fig. 3 is the schematic diagram of the bridge prestress porous anchor installation method step S3;
Fig. 4 is the schematic diagram of the bridge prestress porous anchor installation method step S4;
Fig. 5 is the structure chart of the deconcentrator embodiment one;
Fig. 6 is the structure chart of the deconcentrator embodiment two;
Fig. 7 is the structure sectional view of the connection component embodiment two;
Fig. 8 is the structure front view of the connection component embodiment three.
Digital representation in figure:
1- deconcentrators;2- steel strand wires;3- work anchors;4- limiting plates;5- jack;6- moveable anchors;The isolation parts 11-;12- connects
Socket part;13- through-holes;The first fixing pieces of 14-;The second fixing pieces of 15-;16- connection components;The first clamping portions 161-;162- second
Clamping portion;163- connecting holes;164- clamping blocks;165- support portions;166- fixed parts;167- fillet surfaces;168- dropouts portion.
Specific implementation mode
Below in conjunction with attached drawing, the forgoing and additional technical features and advantages are described in more detail.
Embodiment one
As shown in Figures 1 to 4, the bridge prestress porous anchor installation method includes step:
S1, installment work anchor 3, the work anchor 3 use intermediate plate by 3 He of the work anchor after being moved to design requirement position
Steel strand wires 2 are locked;
Each steel strand wires 2 are separated by deconcentrator 1 and are combed by S2, are adjusted the steel after 4 duct angle of limiting plate
Twisted wire 2 passes through one by one, removes the deconcentrator 1, and the limiting plate 4 is moved to design requirement position;
All steel strand wires 2 are penetrated jack 5, and the jack 5 are moved to design requirement position by S3;
Each steel strand wires 2 are separated by the deconcentrator 1 and are combed by S4, and the steel strand wires 2 are passed through tool one by one
Behind 6 duct of anchor, the deconcentrator 1 is removed, the moveable anchor 6 uses intermediate plate by the work anchor after being moved to design requirement position
3 and the steel strand wires 2 lock, complete the installation of porous anchor.
As shown in figure 5, Fig. 5 is the structure chart of deconcentrator described in the present embodiment;The deconcentrator 1 is consolidated including what is be arranged in pairs
Determine part, the fixing piece is in forked, and the fixing piece includes several strip isolation parts 11 and connects the connection of the isolation part 11
Gap is arranged between the adjacent isolation part 11 for portion 12, and the isolation part 11 is for being isolated the steel strand wires 2 and twisting the steel
Line 2 is arranged in the gap, and the quantity of the isolation part 11 is arranged according to the quantity of the steel strand wires 2, preferably, pairs of
The fixing piece is arranged in a crossed manner, to be formed with several bulks to cause the isolation part 11 of two fixing pieces to intersect
Through-hole it is latticed, the steel strand wires 2 are arranged in the through-hole 13, to ensure separation of the deconcentrator 1 to the steel strand wires 2
Effect.
Preferably, the fixing piece includes the first fixing piece 14 and the second fixing piece 15, first fixing piece 14 is inserted
Enter in the steel strand wires 2, same level will be in or the conplane steel strand wires 2 are arranged in the adjacent isolation part 11
Between space in, i.e., the steel strand wires 2 are divided into several regions by first fixing piece 14;Then by described second
Fixing piece 15 by with first fixing piece 14 is in a certain angle intersect in the form of be inserted into the steel strand wires 2, by described first
Fixing piece 14 is arranged the steel strand wires 2 in the same region and is separated again by second fixing piece 15, and described first
The adjacent isolation part 11 of fixing piece 14 and the adjacent isolation part 11 of second fixing piece 15 intersect to be formed it is logical
Hole 13, the steel strand wires 2 are separated by the isolation part 11 in the different through-holes 13.Preferably, the steel strand wires 2 and institute
The one-to-one correspondence of through-hole 13 is stated, is i.e. the steel strand wires 2 are set in a through-hole 13.
Preferably, first fixing piece 14 and 15 square crossing of the second fixing piece setting, i.e., described first fixes
Part 14 is horizontally disposed, and second fixing piece 15 is vertically arranged, and is positioned to the separation of the steel strand wires 2 convenient for the fixing piece.
Specifically, after the fixing piece being intersected the steel strand wires 2 being isolated, by by the fixing piece from the work anchor
3 installation sites are moved to 6 installation direction of the moveable anchor, to realize combing of the deconcentrator 1 to the steel strand wires 2, are protected
It is putting in order for end position to demonstrate,prove in each steel strand wires 2, ensures that the steel strand wires 2 can pass through 4 He of the limiting plate one by one
In 6 corresponding duct of the moveable anchor, the phenomenon that avoiding the dislocation of adjacent steel strand wires 2 or wind.
The pairs of structure setting of the deconcentrator 1 is convenient for the installation and removal of the deconcentrator 1;Compared to existing one
1 structure of deconcentrator of formula, the structure of heretofore described deconcentrator 1 can in porous anchor installation process multiple installing and dismounting,
It is easy to disassemble to avoid moving the limiting plate 4 and the moveable anchor 6 while ensureing to separate positioning to the steel strand wires 2
The influence of installation effectively shortens the porous anchor installation time, greatly improves 2 tensioning of prestress wire work effect
Rate.
The deconcentrator 1 can be used 8 steel bar meter of diameter phi and form, and makes simply, is easy to draw materials, and repeats and utilizes, and
There is certain amount of elastic deformation in the isolation part 11, ensures that 13 size of the through-hole can be adjusted, to adapt to porous anchor
Different duct ordered states.The split settings of second fixing piece 15 and first fixing piece 14, the deconcentrator 1 can
Scene suitably adjusts the friendship between second fixing piece 15 and first fixing piece 14 according to the concrete model of porous anchor
Fork angle is to realize that the deconcentrator 1 preferably separates locating effect.
Embodiment two
As shown in fig. 6, Fig. 6 is the structure chart of deconcentrator described in the present embodiment;The deconcentrator 1 is additionally provided with connection component
16, detachable company can be realized between first fixing piece 14 and second fixing piece 15 by the connection component 16
It connects.
The connection component 16 includes the first clamping portion 161 and the second clamping portion 162, first clamping portion 161 and institute
It states the second clamping portion 162 to be separately positioned on first fixing piece 14 and second fixing piece 15, first clamping portion
161 setting connecting holes 163, several clamping blocks 164, the clamping block 164 and the connecting hole is arranged in second clamping portion 162
163 are correspondingly arranged, interior to realize first clamping portion 161 into the connecting hole 163 by being clamped the clamping block 164
With the connection of second clamping portion 162.First clamping portion 161 and second clamping portion 162 may be configured as with it is described
Interconnecting piece 12 connects and the handle in a certain angle with the interconnecting piece 12, consolidates convenient for first fixing piece 14 and described second
Determine taking for part 15;First fixing piece 14 and second fixing piece 15 need to generally be corresponded to and be used in pairs, the connection
Component 16 connects first fixing piece 14 and second fixing piece 15 and takes convenient for the placement of the deconcentrator 1.
As shown in fig. 7, Fig. 7 is the structure chart of connection component described in the present embodiment;Preferably, the connecting hole 163 is arranged
For circular hole, 164 annular of the clamping block is uniformly distributed, and support portion 165 and fixed part 166, the fixed part is arranged in the clamping block 164
166 are fixed on by the support portion 165 on the surface of first fixing piece 14 or second fixing piece 15.The support
Portion 165 is made of elastic material, by the deformation of the support portion 165 realize the change in location of the fixed part 166 to
Ensure the clamping that the fixed part 166 passes through the connecting hole 163 to realize the fixed part 166 and the connecting hole 163.
Maximum distance between the support portion 165 is less than the diameter dimension of the connecting hole 163, the fixed part 166
Between maximum distance be more than the diameter dimension of the connecting hole 163, the fixed part 166 may pass through the connecting hole 163 simultaneously
It is clamped with 163 edge of the connecting hole;And when first clamping portion 161 and second clamping portion 162 clamping, described first
Clamping portion 161 and second clamping portion 162 can still relatively rotate, i.e., described first fixing piece 14 and second fixing piece 15
When connection, first fixing piece 14 and second fixing piece 15 can relatively rotate.
During practice of construction, the steel strand wires 2 are typically in irregular winding or flexuosity, and the steel
2 material of twisted wire is harder, when carrying out carding operation to the steel strand wires 2 using the deconcentrator 1,14 He of the first fixing piece
Cross angle between first fixing piece 14 easily changes, and the setting of the connection component 16 is ensureing that described first is solid
Determine part 14 and 15 connection status of the second fixing piece i.e. described deconcentrator 1 and locating effect is preferably separated to the steel strand wires 2
While, convenient for the mobile combing of the deconcentrator 1 during carding operation, avoid the deconcentrator 1 and the steel strand wires 2
Stuck situation.
Fillet surface 167 is arranged in the fixed part 166, and the fillet surface 167 is set as arc surface, 167 edge of the fillet surface
Direction far from the support portion 165 is inwardly angled, and here inwardly angled is the fixed part 166 to the clamping block 164
The direction of the uniformly distributed axis of annular, squeezes from one end of the connecting hole 163 to the connecting hole 163 convenient for the fixed part 166
Inside is simultaneously clamped in the other end of the connecting hole 163 and 163 edge of the connecting hole.
Embodiment three
Embodiment three is further improved on the basis of embodiment two, described to the improvement is that, second card
Socket part 162 is additionally provided with dropout portion 168.
As shown in figure 8, Fig. 8 is the structure chart of connection component described in the present embodiment;Briquetting is arranged in the dropout portion 168,
The briquetting is arranged on the uniformly distributed central axis of 164 annular of the clamping block, and the briquetting and the fixed part 166
Connection, the briquetting and 166 coupling part of the fixed part be set as film-form or threadiness, i.e., the described briquetting and described solid
Determine portion 166 coupling part can plastic deformation, when ensureing the briquetting stress, the coupling part can uniformly pass active force
It is handed on each fixed part 166, the fixed part 166 causes the support portion 165 that elastic deformation occurs in stress, described solid
Determine portion 166 to collapse to the briquetting, the maximum distance between the fixed part 166 is caused to be less than 163 diameter of the connecting hole
Size, to realize the disengaging of first clamping portion 161 and second clamping portion 162.
The setting in the dropout portion 168 releases first fixing piece 14 and second fixing piece 15 convenient for user
Between clamped condition, to realize the dismounting of the deconcentrator 1.
The foregoing is merely presently preferred embodiments of the present invention, is merely illustrative for the purpose of the present invention, and not restrictive
's.Those skilled in the art understand that in the spirit and scope defined by the claims in the present invention many changes can be carried out to it,
It changes or even equivalent, but falls in protection scope of the present invention.
Claims (10)
1. a kind of bridge prestress porous anchor installation method, which is characterized in that including step:
S1, installment work anchor, the work anchor use intermediate plate by the work anchor and steel strand wires after being moved to design requirement position
Locking;
Each steel strand wires are separated by deconcentrator and are combed by S2, adjust after the angle of limiting plate duct by the steel strand wires by
One passes through, and removes the deconcentrator, and the limiting plate is moved design requirement position;
All steel strand wires are penetrated jack, and the jack are moved to design requirement position by S3;
Each steel strand wires are separated by the deconcentrator and are combed, and the steel strand wires are passed through moveable anchor duct one by one by S4
Afterwards, the deconcentrator is removed, the moveable anchor uses intermediate plate by the work anchor and the steel after being moved to design requirement position
Twisted wire is locked.
2. bridge prestress porous anchor installation method as described in claim 1, which is characterized in that the deconcentrator includes into
To the fixing piece of setting, the fixing piece is in forked, and the fixing piece includes several strip isolation parts and the connection isolation part
Interconnecting piece, gap is set between the adjacent isolation part, and the isolation part is isolated the steel strand wires and sets the steel strand wires
It sets in the gap.
3. bridge prestress porous anchor installation method as claimed in claim 2, which is characterized in that the separation of the deconcentrator
Process is that the fixing piece includes the first fixing piece and the second fixing piece, and first fixing piece is inserted into the steel strand wires,
The conplane steel strand wires will be in be arranged in the same gap, first fixing piece separates the steel strand wires
In several regions;Second fixing piece and first fixing piece are intersected and are inserted into the steel strand wires, by described the
One fixing piece is arranged the steel strand wires in the same region and is separated again by second fixing piece, and described first fixes
The adjacent isolation part of part and the adjacent isolation part of second fixing piece intersect to form through-hole, the steel strand wires
It is interposed between by the isolated part in the different through-holes.
4. bridge prestress porous anchor installation method as claimed in claim 3, which is characterized in that intersect the fixing piece
After separating the steel strand wires, by by the fixing piece from the work anchor installation site to moveable anchor installation site direction
Movement is up to the steel strand wires end, to complete carding operation of the deconcentrator to the steel strand wires.
5. bridge prestress porous anchor installation method as claimed in claim 3, which is characterized in that the deconcentrator is also set up
There is connection component, the connection component detachable connection can be passed through between first fixing piece and second fixing piece.
6. bridge prestress porous anchor installation method as claimed in claim 5, which is characterized in that the connection component includes
Connecting hole is arranged in first clamping portion and the second clamping portion, first clamping portion, and several clamping blocks are arranged in second clamping portion,
The clamping block and the connecting hole are correspondingly arranged, by the way that the clamping block to be clamped in the connecting hole to described in realization
The connection of first clamping portion and second clamping portion.
7. bridge prestress porous anchor installation method as claimed in claim 6, which is characterized in that the connecting hole is set as
Circular hole, the clamping block annular is uniformly distributed, and the clamping block setting support portion and fixed part, the fixed part pass through the support portion
It is fixed on the surface of the fixing piece, by the deformation of the support portion position change occurs for the fixed part.
8. bridge prestress porous anchor installation method as claimed in claim 7, which is characterized in that between the support portion
Maximum distance is less than the diameter dimension of the connecting hole, and the maximum distance between the fixed part is more than the diameter of the connecting hole
Size, in the case of the support portion deformation fixed part may pass through the connecting hole and with the connecting hole edge card
It connects.
9. bridge prestress porous anchor installation method as claimed in claim 7, which is characterized in that the fixed part setting is fallen
Edged surface, the fillet surface are set as arc surface, and the fillet surface is along the inwardly angled gathering in direction far from the support portion.
10. bridge prestress porous anchor installation method as claimed in claim 7, which is characterized in that second clamping portion
Briquetting is also set up, the briquetting is arranged on the uniformly distributed central axis of the clamping block annular, and the briquetting and institute
It states fixed part to connect, the coupling part of the briquetting and the fixed part can plastic deformation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810499769.0A CN108708283B (en) | 2018-05-23 | 2018-05-23 | Method for installing bridge prestressed porous anchorage |
Applications Claiming Priority (1)
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CN201810499769.0A CN108708283B (en) | 2018-05-23 | 2018-05-23 | Method for installing bridge prestressed porous anchorage |
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CN108708283A true CN108708283A (en) | 2018-10-26 |
CN108708283B CN108708283B (en) | 2020-12-11 |
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ID=63868405
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CN201810499769.0A Active CN108708283B (en) | 2018-05-23 | 2018-05-23 | Method for installing bridge prestressed porous anchorage |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN109680807A (en) * | 2019-01-25 | 2019-04-26 | 华汇工程设计集团股份有限公司 | Anchor structure and method of the pre-tensioning system Prefabricated superposed beam steel strand wires in bean column node |
CN111472282A (en) * | 2020-04-23 | 2020-07-31 | 乔磊 | Prestressed anchorage utensil is used in road bridge construction |
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CN206956562U (en) * | 2017-07-06 | 2018-02-02 | 中铁上海工程局集团有限公司 | A kind of steel strand wires beam splitting arrangement |
CN107975240A (en) * | 2017-11-30 | 2018-05-01 | 中国冶集团有限公司 | One kind moves back anchor two times tensioning device and its construction method |
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KR100982974B1 (en) * | 2009-12-21 | 2010-09-17 | (주)아이브릿지코리아 | Method for manufacturing multi-span continuous re-prestressed preflex composite bridge |
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CN111472282A (en) * | 2020-04-23 | 2020-07-31 | 乔磊 | Prestressed anchorage utensil is used in road bridge construction |
CN111472282B (en) * | 2020-04-23 | 2021-03-19 | 乔磊 | Prestressed anchorage utensil is used in road bridge construction |
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CN108708283B (en) | 2020-12-11 |
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Effective date of registration: 20190411 Address after: 230031 No. 20 Tianda Road, Hefei High-tech Zone, Anhui Province Applicant after: China Railway Beijing Engineering Bureau Group Urban Rail Transit Engineering Co., Ltd. Applicant after: Beijing Railway Engineering Bureau Group Co., Ltd. Address before: 230088 No. 20 Tianda Road, Hefei High-tech Zone, Anhui Province Applicant before: China Railway Beijing Engineering Bureau Group Urban Rail Transit Engineering Co., Ltd. |
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