CN107762238B - A kind of king-post prestressed strand lifting position control method - Google Patents
A kind of king-post prestressed strand lifting position control method Download PDFInfo
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- CN107762238B CN107762238B CN201710952262.1A CN201710952262A CN107762238B CN 107762238 B CN107762238 B CN 107762238B CN 201710952262 A CN201710952262 A CN 201710952262A CN 107762238 B CN107762238 B CN 107762238B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/16—Prestressed structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/121—Construction of stressing jacks
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/34—Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
- E04H12/341—Arrangements for casting in situ concrete towers or the like
Abstract
The present invention relates to a kind of king-post prestressed strands to lift position control method, includes the following steps: that Shu Pingtai is compiled in selection, according to the length of steel beam, the conduit of beam is compiled in setting on compiling Shu Pingtai；Steel strand wires are penetrated in conduit by root；Beam is compiled to steel beam lower end；Beam is compiled to steel Shu Shangduan again, and 1# anchor slab is installed, steel strand wires are locked on 1# anchor slab using steel strand wires card；2# anchor slab is worn again in steel bunchy top portion, using anchor ear by 1#, 2# anchor slab banding；Steel strand wires are sent into reserving hole channel；The anchor ear for anchoring two anchor slabs is released, takes 2# anchor slab away, completes the installation of steel beam；Stretch-draw jack is installed on the 1# anchor slab left, use the 10%-20% initial tensioning force of tension stress, complete unlock and adjustment the steel Shu Shunzhi degree, loose degree of card temporary locking, subsequently into the tensioning construction stage, the present invention has the advantages that easy to operate, the saving time, work efficiency is high.
Description
Technical field
The invention belongs to king-post pre-stress construction fields, and in particular to a kind of king-post prestressed strand lifting location control side
Method.
Background technique
Prestressing force is in order to improve structure military service performance, in the precharge pressure that construction period is previously applied to structure, structure
Precharge pressure can completely or partially offset tensile stress caused by load during one's term of military service, and structure is avoided to destroy.It is usually used in concrete knot
Structure.Prestressed reinforced concrete construction is to apply pressure before structure bearing load to it in advance, make it in outer load action
Concrete in tension zone internal force generate compression, to offset or reduce external load generation tensile stress, make structure normally
It does not generate crack in the case where or splits than later.
Currently, large-sized prestress king-post steel strand wires because joint length is big, mostly carry out lashing using special strand pulling machine, lead to
Cross strand pulling machine machine driving, idler wheel clamping steel strand wires are transmitted, i.e., drive double driving wheels to rotate using speed reducer, steel hinge line from
The insertion of one end incoming line, driving wheel and double driven wheels, which are pushed down steel hinge line and moved forward, penetrates reserving hole channel along conduit, until from hole
The road other end is pierced by the size for reaching tensioning needs.When king-post takes subsection tension size shorter, also matched sometimes using crane
After closing hanging object snap ring locking steel strand wires, steel strand wires bunchy is sling into cooperation, steel strand wires are slowly manually sent into reserving hole channel, until
Steel strand wires are pierced by from duct lower end, then first steel beam lower end is baffled, upper end using 8# galvanized wire or wirerope is consolidated steel strand wires
It is fixed, then galvanized wire or wirerope are released, after installation anchor slab makes jack and has the ability of locking steel beam, release the gear of steel beam lower end
Plate installs steel beam lower end anchor slab and jack, the lashing for completing steel strand wires and the preparation before tensioning.
However, pulling anchor cable stage must be by carrying out the built-in fitting at tensioning port when pre-stress construction place is narrow
Processing could be that suitable space is vacateed in tensioning, and requires just to can guarantee that tensioning is normally carried out using the jack of small volume,
Therefore, carrying out lashing operation in prestressed pore passage arrangement strand pulling machine suitable for reading cannot achieve.If steel strand wires sling using crane
Afterwards, it is manually sent into hole by root, and glides in the baffled blocking steel beam in duct lower part, taking the measure, not only difficulty of construction is big,
And easily cause steel beam to drop because of self weight, need to do over again lashing again, and there are construction quality risk, and steel Shu Zichong compared with
Greatly, portion is baffled under prestress and when cooperating the fixed steel beam of duct top and galvanized wire or wirerope, is easy to happen steel beam and crashes into
Phenomenon in hole, and steel beam relative position generates dislocation, needs repeatedly to adjust steel beam, causes many troubles to pre-stress construction,
In addition to this, when prestressed cable tensioning, for eliminate steel strand wires in duct because be self-possessed it is sagging caused by straight and slackness increase
Loss of prestress also needs after carrying out single top prestretching, then carries out the tensioning of whole beam, and construction is complicated time-consuming.
Summary of the invention
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of king-post prestressed strands to lift location control side
Method, the control method, includes the following steps:
Step 1: select a smooth location as the platform of steel strands-woven bundle, according to the length of steel beam, on compiling Shu Pingtai
Two blocks of steel plates that can be moved are set, and weld a steel pipe on the steel plate as the conduit for compiling beam, by steel plate
Position adjustment, to be suitble to compile different segment length steel beam the needs of beam；
Step 2: steel strand wires are penetrated by root in the conduit for being used for steel beam top and bottom volume beam, so as in conduit outlet
Steel strand wires are arranged on the steel plate at end；
Step 3: when beam is compiled in steel beam lower end, being divided into three kinds of dislocation for steel beam and place, and adjacent dislocation difference is 30cm, uses
Galvanized wire binds the steel strand wires of equal length together, and the steel strand wires of long 30cm are wrapped to the steel strand wires of 30cm shorter than its,
Cone-shaped is formed in the lower end of steel beam；
Step 4: it is hinged with a guiding cap in steel beam lower end, in order to which steel beam passes through duct；
Step 5: when steel Shu Shangduan compiles beam, the steel strand wires of longest beam are first mounted on to several center hole portions of 1# anchor slab
Position, then vice-minister's beam of steel strand wires is faced into centre bore mounting arrangements, most short steel strand wires are finally arranged in the periphery hole site of anchor slab；
Step 6: after the completion of 1# anchor slab lashing, steel strand wires are locked on 1# anchor slab using steel strand wires card；
Step 7: it after completing the locking of upper end steel strand wires, wears 2# anchor slab again at the top of steel Shu Shangduan, then uses anchor ear by 1#
Anchor slab, 2# anchor slab hoop are together；
Step 8: along steel beam length direction at interval of 4m-6m, bundling steel beam with galvanized wire, prevents steel beam adjacent in lifting
Steel strand wires generate gap and displacement；
Step 9: the steel Shu Caiyong crane for completing top and bottom volume beam is sling, steel strand wires are sent into reserving hole channel simultaneously
The galvanized wire every 4m-6m binding steel beam is released, until steel strand wires lower end is pierced by from duct lower end；
Step 10: when steel Shu Shangduan is suitable for reading close to duct, 1# anchor slab that steel Shu Shangduan is installed, 2# anchor slab center and reserved
The alignment of duct center, anchor slab is uniformly placed on the platform suitable for reading of duct；
Step 11: releasing the anchor ear for anchoring two anchor slabs, takes 2# anchor slab away, completes the installation of steel beam；
Step 12: directly installing stretch-draw jack on the 1# anchor slab left, uses the tension stress of jack
10%-20% initial tensioning force, complete card temporary locking unlock and steel Shu Shunzhi degree, loose degree adjustment, then into
Enter the tensioning construction stage.
Further, in step 1, the length of steel pipe is 50cm and identical as reserving hole channel internal diameter, convenient for compiling beam,
So that steel beam compiles Shu Haohou, can be sent into duct.
Further, in step 1, the size of steel plate is 200cm*200cm*2cm.
Further, in step 3, when steel strand wires are bound, the binding galvanized wire coiling of use is no less than 2 circles.
Further, in step 4,4-5 layers are swathed using adhesive tape outside guiding cap, so that lashing head is in flexible shape.
Further, galvanized wire is the galvanized wire of 16#.
Further, in step 8, along steel beam length direction at interval of 5m, steel is tied in using galvanized wire and is held together,
So that steel beam is integrally bonded in hoisting process.
Further, in step 9, by steel strand wires uniformly, be orderly sent into reserving hole channel.
Further, it in step 12, using 20% initial tensioning force of the tension stress of jack, completes card and faces
The unlock of Shi Suoding and adjustment steel Shu Shunzhi degree, loose degree.
Control method of the present invention has the beneficial effect that
1, control method of the present invention completes single steel strand on compiling Shu Pingtai and integrally compiles beam, so that steel strand wires arrange
Neatly, smoothly, binding securely, avoid Gang Jiao Xian Chan twist or turn round fried dough twist phenomenon generation.
2, control method of the present invention takes whole strand pricking technique, improves straight degree and relaxation of the steel strand wires in duct
Degree, reduces stress loss of the prestressed strand in tensioning, reduces the stress-deviation between steel strand wires.
3, control method of the present invention has the advantages that the saving time, easy to operate, work efficiency is high.
4, control method of the present invention is transferred after taking double anchor slabs to add anchor ear, card locking steel strand wires using crane, both
Debunching, steel strand wires gliding dislocations of the steel beam in hoisting process are prevented, in turn simplify steel beam in decentralization to the locking behind aperture
Work.
5, control method of the present invention avoids the generation that steel beam falls with shifting phenomena, so that steel stranded wire penetrating adapter is determined
Position is more accurate, and safely and controllably.
Specific embodiment
Below with reference to the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Those of ordinary skill in the art's every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment 1
The control method, includes the following steps:
Step 1: select a smooth location as the platform of steel strands-woven bundle, according to the length of steel beam, on compiling Shu Pingtai
Two blocks of steel plates that can be moved are set, and weld a steel pipe on the steel plate as the conduit for compiling beam, by steel plate
Position adjustment, to be suitble to compile different segment length steel beam the needs of beam；
Step 2: steel strand wires are penetrated by root in the conduit for being used for steel beam top and bottom volume beam, so as in conduit outlet
Steel strand wires are arranged on the steel plate at end；
Step 3: when beam is compiled in steel beam lower end, being divided into three kinds of dislocation for steel beam and place, and adjacent dislocation difference is 30cm, uses
Galvanized wire binds the steel strand wires of equal length together, and the steel strand wires of long 30cm are wrapped to the steel strand wires of 30cm shorter than its,
Cone-shaped is formed in the lower end of steel beam；
Step 4: it is hinged with a guiding cap in steel beam lower end, in order to which steel beam passes through duct；
Step 5: when steel Shu Shangduan compiles beam, the steel strand wires of longest beam are first mounted on to several center hole portions of 1# anchor slab
Position, then vice-minister's beam of steel strand wires is faced into centre bore mounting arrangements, most short steel strand wires are finally arranged in the periphery hole site of anchor slab；
Step 6: after the completion of 1# anchor slab lashing, steel strand wires are locked on 1# anchor slab using steel strand wires card；
Step 7: it after completing the locking of upper end steel strand wires, wears 2# anchor slab again at the top of steel Shu Shangduan, then uses anchor ear by 1#
Anchor slab, 2# anchor slab hoop are together；
Step 8: along steel beam length direction at interval of 4m-6m, bundling steel beam with galvanized wire, prevents steel beam adjacent in lifting
Steel strand wires generate gap and displacement；
Step 9: the steel Shu Caiyong crane for completing top and bottom volume beam is sling, steel strand wires are sent into reserving hole channel simultaneously
The galvanized wire every 4m-6m binding steel beam is released, until steel strand wires lower end is pierced by from duct lower end；
Step 10: when steel Shu Shangduan is suitable for reading close to duct, 1# anchor slab that steel Shu Shangduan is installed, 2# anchor slab center and reserved
The alignment of duct center, anchor slab is uniformly placed on the platform suitable for reading of duct；
Step 11: releasing the anchor ear for anchoring two anchor slabs, takes 2# anchor slab away, completes the installation of steel beam；
Step 12: directly installing stretch-draw jack on the 1# anchor slab left, uses the tension stress of jack
10%-20% initial tensioning force, complete card temporary locking unlock and steel Shu Shunzhi degree, loose degree adjustment, then into
Enter the tensioning construction stage.
Further, in step 1, the length of steel pipe is 50cm and identical as reserving hole channel internal diameter, convenient for compiling beam,
So that steel beam compiles Shu Haohou, can be sent into duct.
Further, in step 1, the size of steel plate is 200cm*200cm*2cm.
Further, in step 3, when steel strand wires are bound, the binding galvanized wire coiling of use is no less than 2 circles.
Further, in step 4,4-5 layers are swathed using adhesive tape outside guiding cap, so that lashing head is in flexible shape.
Further, galvanized wire is the galvanized wire of 16#.
Further, in step 8, along steel beam length direction at interval of 5m, steel is tied in using galvanized wire and is held together,
So that steel beam integrally fits closely in hoisting process.
Further, in step 9, by steel strand wires uniformly, be orderly sent into reserving hole channel.
Further, it in step 12, using 20% initial tensioning force of the tension stress of jack, completes card and faces
The unlock of Shi Suoding and adjustment steel Shu Shunzhi degree, loose degree.
Embodiment 2
Construction Gereral Situation:
It is located at humane road and Jialuhe River intersection, overall length of bridge 526.0m, the wide 55m of bridge floor in certain Chinese bridge.Wherein lead
The long 190m of bridge, wide 55m, main bridge is double rope faces without dorsal funciculus single pylon cable stayed bridge, and king-tower is prestressed concrete inclined pylon, and upper king-post strut is high
60m tilts backwards 30, and cross section is single box single chamber；The high 12.5m of lower king-post strut, cross section are single box double room, and short transverse is in line
Property gradual change, tower width is 4m.
The high 12.51m of king-tower lower king-post strut is divided into two sections of constructions, and first segment completes the construction of lower king-post strut pedestal, and second segment construction is surplus
Remaining chamber part；Points of 10 sections constructions of king-tower, each segment with steel box girder segment synchronous construction.It is completed in king-post concreting
And after reaching 100% intensity, then prestressed cable in tensioning king-tower is connect to be formed by suspension cable with steel box-girder and mutually be balanced each other
Whole, therefore, king-post quality control for prestress stretching construction is to guarantee the basis of leaning tower and steel case and monolithic stability, leaning tower and steel box-girder
Monolithic stability is the key that bridge construction success or failure.
The problem of being encountered in construction:
Because king-tower prestressed concrete is single box single chamber structure, chamber side wall thickness only 1m, therefore, pre-stress construction place
Narrow, pulling anchor cable stage could must be that suitable space is vacateed in tensioning by handling the built-in fitting at tensioning port, and
It is required that the jack using small volume just can guarantee that tensioning is normally carried out, therefore, in prestressed pore passage arrangement strand pulling machine suitable for reading
Carrying out lashing operation cannot achieve.When upper tower lower section is constructed, because steel strand wires are shorter, after being sling steel strand wires using crane, manually
It is sent into hole by root, and glides in the baffled blocking steel beam in duct lower part, taking the measure, not only difficulty of construction is big, but also easily
Steel beam is caused to drop because of self weight, need to do over again lashing again, and there are construction quality risks；When upper midsection is constructed, take
When stating method lashing, because steel Shu Zichong is larger, portion is baffled under prestress and cooperates duct top and galvanized wire or wirerope solid
When determining steel beam, steel beam repeatedly occurs and crashes into phenomenon in hole, and steel beam relative position has dislocation, needs repeatedly to adjust steel beam, give
Pre-stress construction causes many troubles.When prestressed cable tensioning, for eliminate steel strand wires in duct because be self-possessed it is sagging caused by
Straight and slackness increases loss of prestress, also needs after carrying out single top prestretching, then carry out the tensioning of whole beam.
Solution:
Using control method of the present invention, include the following steps:
Step 1: select a smooth location as the platform of steel strands-woven bundle, according to the length of steel beam, on compiling Shu Pingtai
Two blocks of steel plates that can be moved are set, and weld a steel pipe on the steel plate as the conduit for compiling beam, the size of steel plate is
200cm*200cm*2cm, the length of steel pipe are 50cm and identical as reserving hole channel internal diameter；
Step 2: steel strand wires are penetrated by root in the conduit for being used for steel beam top and bottom volume beam；
Step 3: when beam is compiled in steel beam lower end, being divided into three kinds of dislocation for steel beam and place, and adjacent dislocation difference is 30cm, uses
Together by the steel strand wires binding of equal length, the binding galvanized wire coiling of use is no less than 2 circles to 16# galvanized wire, and by long 30cm's
Steel strand wires wrap the steel strand wires of 30cm shorter than its, form cone-shaped in the lower end of steel beam；
Step 4: it is hinged with a guiding cap in steel beam lower end, uses adhesive tape to swathe 5 layers outside guiding cap；
Step 5: when steel Shu Shangduan compiles beam, the steel strand wires of longest beam are first mounted on to several center hole portions of 1# anchor slab
Position, then vice-minister's beam of steel strand wires is faced into centre bore mounting arrangements, most short steel strand wires are finally arranged in the periphery hole site of anchor slab；
Step 6: after the completion of 1# anchor slab lashing, steel strand wires are locked on 1# anchor slab using steel strand wires card；
Step 7: it after completing the locking of upper end steel strand wires, wears 2# anchor slab again at the top of steel Shu Shangduan, then uses anchor ear by 1#
Anchor slab, 2# anchor slab hoop are together；
Step 8: along steel beam length direction at interval of 5m, steel beam is bundled with 16# galvanized wire；
Step 9: the steel Shu Caiyong crane for completing top and bottom volume beam is sling, steel strand wires are sent into reserving hole channel simultaneously
The 16# galvanized wire every 5m binding steel beam is released, until steel strand wires lower end is pierced by from duct lower end；
Step 10: when steel Shu Shangduan is suitable for reading close to duct, 1# anchor slab that steel Shu Shangduan is installed, 2# anchor slab center and reserved
The alignment of duct center, anchor slab is uniformly placed on the platform suitable for reading of duct；
Step 11: releasing the anchor ear for anchoring two anchor slabs, takes 2# anchor slab away, completes the installation of steel beam；
Step 12: directly installing stretch-draw jack on the 1# anchor slab left, uses the tension stress of jack
20% initial tensioning force completes the unlock of card temporary locking and the adjustment of steel Shu Shunzhi degree, loose degree, subsequently into answering in advance
The power stretching construction stage.
The effect reached:
In the 3-10 sections of steel beam constructions of king-tower upper king-post strut, crane after anchor ear, card locking steel strand wires is added to send using double anchor slabs
Anchor technique, it is therefore prevented that debunching, steel strand wires gliding dislocations of the steel beam in hoisting process, and avoid that 1-3 sections of steel Shu Yinan are being installed
Temporary fixing lifting galvanized wire or wirerope when filling anchor slab and the phenomenon that cause steel beam to fall and shift so that steel stranded wire penetrating adapter
Positioning is more accurate and safety, controllable, construction efficiency is obviously accelerated.
Present invention is not limited to the embodiments described above, without departing substantially from substantive content of the present invention, art technology
Any deformation, improvement, the replacement that personnel are contemplated that each fall within protection scope of the present invention.
Claims (9)
1. a kind of king-post prestressed strand lifts position control method, which comprises the steps of:
Step 1: a smooth location is selected to be arranged on compiling Shu Pingtai as the platform of steel strands-woven bundle according to the length of steel beam
Two blocks of steel plates that can be moved, and a steel pipe is welded on the steel plate as the conduit for compiling beam；
Step 2: steel strand wires are penetrated by root in the conduit for being used for steel beam top and bottom volume beam；
Step 3: when beam is compiled in steel beam lower end, being divided into three kinds of dislocation for steel beam and place, and adjacent dislocation difference is 30cm, using galvanized wire
Together by the steel strand wires binding of equal length, and by the steel strand wires of long 30cm the steel strand wires for wrapping 30cm shorter than its, in steel
The lower end of beam forms cone-shaped；
Step 4: a guiding cap is hinged in steel beam lower end；
The steel strand wires of longest beam: when steel Shu Shangduan compiles beam, being first mounted on several centre bore positions of 1# anchor slab by step 5, then
Vice-minister's beam of steel strand wires is faced into centre bore mounting arrangements, most short steel strand wires are finally arranged in the periphery hole site of anchor slab；
Step 6: after the completion of 1# anchor slab lashing, steel strand wires are locked on 1# anchor slab using steel strand wires card；
Step 7: it after completing the locking of upper end steel strand wires, wears 2# anchor slab again at the top of steel Shu Shangduan, then uses anchor ear by 1# anchor
Plate, 2# anchor slab hoop are together；
Step 8: along steel beam length direction at interval of 4m-6m, steel beam is bundled with galvanized wire；
Step 9: the steel Shu Caiyong crane for completing top and bottom volume beam is sling, steel strand wires are sent into reserving hole channel and are released
Every the galvanized wire of 4m-6m binding steel beam, until steel strand wires lower end is pierced by from duct lower end；
Step 10: when steel Shu Shangduan is suitable for reading close to duct, 1# anchor slab, 2# anchor slab center and reserving hole channel that steel Shu Shangduan is installed
Center alignment, anchor slab is uniformly placed on the platform suitable for reading of duct；
Step 11: releasing the anchor ear for anchoring two anchor slabs, takes 2# anchor slab away, completes the installation of steel beam；
Step 12: stretch-draw jack directly is installed on the 1# anchor slab left, uses the 10%- of the tension stress of jack
20% initial tensioning force completes the unlock of card temporary locking and the adjustment of steel Shu Shunzhi degree, loose degree, subsequently into answering in advance
The power stretching construction stage.
2. control method according to claim 1, which is characterized in that in step 1, the length of steel pipe be 50cm and
It is identical as reserving hole channel internal diameter.
3. control method according to claim 1, which is characterized in that in step 1, the size of steel plate is 200cm*
200cm*2cm。
4. control method according to claim 1, which is characterized in that in step 3, when steel strand wires are bound, use is tied up
It pricks galvanized wire coiling and is no less than 2 circles.
5. control method according to claim 1, which is characterized in that in step 4, twined outside guiding cap using adhesive tape
Wrap up in 4-5 layers.
6. control method according to claim 1, which is characterized in that in step 8, along steel beam length direction at interval of
Steel is tied in using galvanized wire and is held together by 5m.
7. according to claim 1,4,6 described in any item control methods, which is characterized in that galvanized wire is the galvanized wire of 16#.
8. control method according to claim 1, which is characterized in that in step 9, steel strand wires uniformly, are orderly sent into
Reserving hole channel.
9. control method according to claim 1, which is characterized in that in step 12, answered using the tensioning of jack
20% initial tensioning force of power completes unlock and adjustment the steel Shu Shunzhi degree, loose degree of card temporary locking.
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| CN203613812U (en) * | 2013-11-29 | 2014-05-28 | 甘肃路桥建设集团有限公司 | Pre-stressed steel strand blanking and binding rack |
| CN204919354U (en) * | 2015-08-17 | 2015-12-30 | 北京奇力建通工程技术有限公司 | A construction equipment that is arranged in construction of taking one's place of cable -stay bridge cable wire |
| CN105672138A (en) * | 2016-03-31 | 2016-06-15 | 中铁四局集团第一工程有限公司 | Through type stayed cable installation circulation system and cable threading construction method thereof |
| CN106948263A (en) * | 2017-05-10 | 2017-07-14 | 安徽省交通控股集团有限公司 | A kind of cable-stayed bridge concrete pylon anchor tie plate |
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|---|---|
| CN107762238A (en) | 2018-03-06 |
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