CN107762238A - A kind of king-post prestressed strand lifts position control method - Google Patents
A kind of king-post prestressed strand lifts position control method Download PDFInfo
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- CN107762238A CN107762238A CN201710952262.1A CN201710952262A CN107762238A CN 107762238 A CN107762238 A CN 107762238A CN 201710952262 A CN201710952262 A CN 201710952262A CN 107762238 A CN107762238 A CN 107762238A
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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
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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
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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
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a kind of king-post prestressed strand to lift position control method, comprises the following steps：Shu Pingtai is compiled in selection, and according to the length of steel beam, the conduit for compiling beam is set on Shu Pingtai is compiled；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 slabs are installed, steel strand wires are locked on 1# anchor slabs using steel strand wires card；2# anchor slabs are 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 slabs away, completes the installation of steel beam；Stretch-draw jack is installed on the 1# anchor slabs left, use 10% 20% initial tensioning forces of tension stress, complete unblock and adjustment steel Shu Shunzhi degree, the loose degree of card temporary locking, subsequently into the tensioning construction stage, the present invention has the advantages of simple to operate, saving time, operating efficiency is high.
Description
Technical field
The invention belongs to king-post pre-stress construction field, and in particular to a kind of king-post prestressed strand lifts location control side
Method.
Background technology
Prestressing force is in order to improve structure military service performance, in the precharge pressure that construction period is previously applied to structure, structure
Tension caused by precharge pressure can completely or partially offset load during one's term of military service, avoids structure from destroying.It is usually used in concrete knot
Structure.Prestressed reinforced concrete construction, it is before structure bearing load, pressure is applied to it in advance, makes it in outer load action
Concrete in tension zone internal force produce compression, to offset or reduce tension caused by external load, structure is normally made
Do not produce crack in the case of or split must be than later.
At present, large-sized prestress king-post steel strand wires because joint length it is big, lashing is mostly carried out using special strand pulling machine, led to
Cross strand pulling machine machine driving, roller clamping steel strand wires are transmitted, i.e., drive double driving wheels to rotate using reductor, steel hinge line from
The insertion of one end incoming line, driving wheel, which with double driven pulleys is pushed down steel hinge line and moved forward along conduit, penetrates reserving hole channel, until from hole
The road other end passes the size for reaching tensioning needs.When king-post takes subsection tension size shorter, also matched somebody with somebody 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 pass from duct lower end, then first steel beam lower end is baffled, steel strand wires are consolidated using 8# galvanized wires or steel wire rope in upper end
It is fixed, then galvanized wire or steel wire rope are released, after installation anchor slab makes jack and possesses the ability for locking steel beam, release the gear of steel beam lower end
Plate, steel beam lower end anchor slab and jack are installed, complete the preparation before the lashing and tensioning of steel strand wires.
However, when pre-stress construction place is narrow, pulling anchor cable stage must be by carrying out to the built-in fitting at tensioning port
Processing, could be that suitable space is vacateed in tensioning, and require 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 can not realize.If steel strand wires are sling using crane
Afterwards, manually it is sent into hole by root, and is glided in the baffled stop steel beam in duct bottom, taking the measure, not only difficulty of construction is big,
And easily cause steel beam to be dropped because of deadweight, need to do over again lashing again, and construction quality risk be present, and steel Shu Zichong compared with
Greatly, portion is baffled under prestress and when coordinating duct top and galvanized wire or steel wire rope fixation steel beam, steel beam easily occurs and crashes into
Phenomenon in hole, and steel beam relative position produces dislocation, it is necessary to repeatedly adjust steel beam, and many troubles are caused to pre-stress construction,
In addition, during prestressed cable tensioning, increased to eliminate steel strand wires straight and slackness caused by internal cause deadweight in duct is sagging
Loss of prestress, also need after carrying out single top prestretching, then carry out the tensioning of whole beam, construction is complicated time-consuming.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of king-post prestressed strand to lift location control side
Method, the control method, comprises the following steps：
Step 1：Platform of the smooth location as steel strands-woven bundle is selected, according to the length of steel beam, on Shu Pingtai is compiled
Two blocks of steel plates that can be moved are set, and a steel pipe is welded as the conduit for compiling beam on steel plate, by steel plate
Position adjustment, to be adapted to compile different segment length steel beam the needs of beam；
Step 2：Steel strand wires are penetrated in the conduit that beam is compiled for steel beam top and bottom by root, so as in conduit outlet
Steel strand wires are arranged on the steel plate at end；
Step 3：When compiling beam in steel beam lower end, steel beam is divided into three kinds of dislocation and placed, adjacent dislocation difference is 30cm, is used
The steel strand wires colligation of equal length together, and long 30cm steel strand wires is wrapped 30cm shorter than its steel strand wires by galvanized wire,
Cone-shaped is formed in the bottom of steel beam；
Step 4：A guiding cap is hinged with 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 most long beam are first arranged on to several center hole portions of 1# anchor slabs
Position, then vice-minister's beam of steel strand wires is faced into centre bore installation beam arrangement, most short steel strand wires are finally arranged in the periphery hole position of anchor slab
Put；
Step 6：After the completion of 1# anchor slab lashings, steel strand wires are locked on 1# anchor slabs using steel strand wires card；
Step 7：After completing the locking of upper end steel strand wires, 2# anchor slabs are worn again at the top of steel Shu Shangduan, then using anchor ear by 1#
Anchor slab, 2# anchor slabs hoop are together；
Step 8：Along steel beam length direction at interval of 4m-6m, steel beam is bundled with galvanized wire, prevents that steel beam is adjacent in lifting
Steel strand wires produce gap and displacement；
Step 9：The steel Shu Caiyong cranes for completing top and bottom volume beam are sling, steel strand wires are sent into reserving hole channel simultaneously
The galvanized wire every 4m-6m colligation steel beams is released, until steel strand wires lower end passes from duct lower end；
Step 10：Steel Shu Shangduan close to duct it is suitable for reading when, 1# anchor slabs that steel Shu Shangduan is installed, 2# anchor slabs center with it is reserved
Duct center alignment, anchor slab is uniformly placed on the platform suitable for reading of duct；
Step 11：The anchor ear for anchoring two anchor slabs is released, takes 2# anchor slabs away, completes the installation of steel beam；
Step 12：Directly stretch-draw jack is installed on the 1# anchor slabs left, uses the tension stress of jack
10%-20% initial tensioning forces, complete the unblock of card temporary locking and the adjustment of steel Shu Shunzhi degree, loose degree, Ran Houjin
Enter the tensioning construction stage.
Further, in step 1, the length of steel pipe is 50cm and identical with reserving hole channel internal diameter, is easy to compile 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, during steel strand wires colligation, the colligation 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 16# galvanized wire.
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 sent into reserving hole channel in order.
Further, in step 12, using 20% initial tensioning force of the tension stress of jack, complete card and face
Shi Suoding unblock and adjustment steel Shu Shunzhi degree, loose degree.
Control method of the present invention has the beneficial effect that：
1st, control method of the present invention completes single steel strand on Shu Pingtai is compiled and integrally compiles beam so that steel strand wires arrange
Neatly, smooth-going, colligation are firm, avoid the generation that Gang Jiao Xian Chan are twisted or turned round fried dough twist phenomenon.
2nd, 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.
3rd, control method of the present invention has the advantages of saving time, simple to operate, operating efficiency is high.
4th, control method of the present invention takes double anchor slabs to be transferred after adding 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.
5th, 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.
Embodiment
With reference to embodiments of the invention, technical scheme is clearly and completely described, it is clear that institute
The embodiment of description is only part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention,
The every other embodiment that those of ordinary skill in the art are obtained, belongs to the scope of protection of the invention.
Embodiment 1
The control method, comprises the following steps：
Step 1：Platform of the smooth location as steel strands-woven bundle is selected, according to the length of steel beam, on Shu Pingtai is compiled
Two blocks of steel plates that can be moved are set, and a steel pipe is welded as the conduit for compiling beam on steel plate, by steel plate
Position adjustment, to be adapted to compile different segment length steel beam the needs of beam；
Step 2：Steel strand wires are penetrated in the conduit that beam is compiled for steel beam top and bottom by root, so as in conduit outlet
Steel strand wires are arranged on the steel plate at end；
Step 3：When compiling beam in steel beam lower end, steel beam is divided into three kinds of dislocation and placed, adjacent dislocation difference is 30cm, is used
The steel strand wires colligation of equal length together, and long 30cm steel strand wires is wrapped 30cm shorter than its steel strand wires by galvanized wire,
Cone-shaped is formed in the bottom of steel beam；
Step 4：A guiding cap is hinged with 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 most long beam are first arranged on to several center hole portions of 1# anchor slabs
Position, then vice-minister's beam of steel strand wires is faced into centre bore installation beam arrangement, most short steel strand wires are finally arranged in the periphery hole position of anchor slab
Put；
Step 6：After the completion of 1# anchor slab lashings, steel strand wires are locked on 1# anchor slabs using steel strand wires card；
Step 7：After completing the locking of upper end steel strand wires, 2# anchor slabs are worn again at the top of steel Shu Shangduan, then using anchor ear by 1#
Anchor slab, 2# anchor slabs hoop are together；
Step 8：Along steel beam length direction at interval of 4m-6m, steel beam is bundled with galvanized wire, prevents that steel beam is adjacent in lifting
Steel strand wires produce gap and displacement；
Step 9：The steel Shu Caiyong cranes for completing top and bottom volume beam are sling, steel strand wires are sent into reserving hole channel simultaneously
The galvanized wire every 4m-6m colligation steel beams is released, until steel strand wires lower end passes from duct lower end；
Step 10：Steel Shu Shangduan close to duct it is suitable for reading when, 1# anchor slabs that steel Shu Shangduan is installed, 2# anchor slabs center with it is reserved
Duct center alignment, anchor slab is uniformly placed on the platform suitable for reading of duct；
Step 11：The anchor ear for anchoring two anchor slabs is released, takes 2# anchor slabs away, completes the installation of steel beam；
Step 12：Directly stretch-draw jack is installed on the 1# anchor slabs left, uses the tension stress of jack
10%-20% initial tensioning forces, complete the unblock of card temporary locking and the adjustment of steel Shu Shunzhi degree, loose degree, Ran Houjin
Enter the tensioning construction stage.
Further, in step 1, the length of steel pipe is 50cm and identical with reserving hole channel internal diameter, is easy to compile 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, during steel strand wires colligation, the colligation 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 16# galvanized wire.
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 brought into close contact in hoisting process.
Further, in step 9, by steel strand wires uniformly, be sent into reserving hole channel in order.
Further, in step 12, using 20% initial tensioning force of the tension stress of jack, complete card and face
Shi Suoding unblock 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.It is wherein main
Bridge long 190m, wide 55m, main bridge be double rope faces without dorsal funciculus single pylon cable stayed bridge, king-tower is prestressed concrete inclined pylon, and upper king-post strut is high
60m, 30 are tilted backwards, 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, wide tower is 4m.
The high 12.51m of king-tower lower king-post strut, it is divided into two sections of constructions, first paragraph completes the construction of lower king-post strut base, and second segment construction is surplus
Remaining chamber part；Points of 10 sections constructions of king-tower, each section with steel box girder segment synchronous construction.Completed in king-post concreting
And after reaching 100% intensity, prestressed cable in tensioning king-tower, then it is connected to form what is mutually balanced each other by suspension cable with steel box-girder
Overall, therefore, king-post quality control for prestress stretching construction is to ensure the basis of leaning tower and steel case and monolithic stability, leaning tower and steel box-girder
Monolithic stability is the key of bridge construction success or failure.
The problem of being run into 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 it just can guarantee that tensioning is normally carried out using the jack of small volume, therefore, in prestressed pore passage arrangement strand pulling machine suitable for reading
Carrying out lashing operation can not realize.During upper tower hypomere construction, because steel strand wires are shorter, after using crane, steel strand wires are sling, manually
It is sent into hole by root, and is glided in the baffled stop steel beam in duct bottom, taking the measure, not only difficulty of construction is big, and easily
Steel beam is caused to be dropped because of deadweight, need to do over again lashing again, and construction quality risk be present；During upper midsection construction, take
When stating method lashing, because steel Shu Zichong is larger, portion is baffled under prestress and coordinates duct top and galvanized wire or steel wire rope to consolidate
When determining steel beam, steel beam repeatedly occurs and crashes into phenomenon in hole, and steel beam relative position has dislocation, it is necessary to repeatedly adjust steel beam, gives
Pre-stress construction causes many troubles.During prestressed cable tensioning, to eliminate steel strand wires caused by internal cause deadweight in duct is sagging
Straight and slackness increases loss of prestress, also needs after carrying out single top prestretching, then carry out the tensioning of whole beam.
Solution method:
Using control method of the present invention, comprise the following steps：
Step 1：Platform of the smooth location as steel strands-woven bundle is selected, according to the length of steel beam, on Shu Pingtai is compiled
Two blocks of steel plates that can be moved are set, and welds a steel pipe on steel plate and is as the conduit for compiling beam, the size of steel plate
200cm*200cm*2cm, the length of steel pipe are 50cm and identical with reserving hole channel internal diameter；
Step 2：Steel strand wires are penetrated in the conduit that beam is compiled for steel beam top and bottom by root；
Step 3：When compiling beam in steel beam lower end, steel beam is divided into three kinds of dislocation and placed, adjacent dislocation difference is 30cm, is used
16# galvanized wires by the steel strand wires colligation of equal length together, no less than 2 enclose by the colligation galvanized wire coiling of use, and by long 30cm's
Steel strand wires wrap 30cm shorter than its steel strand wires, and cone-shaped is formed in the bottom of steel beam；
Step 4：A guiding cap is hinged with steel beam lower end, guiding cap outside swathes 5 layers using adhesive tape；
Step 5：When steel Shu Shangduan compiles beam, the steel strand wires of most long beam are first arranged on to several center hole portions of 1# anchor slabs
Position, then vice-minister's beam of steel strand wires is faced into centre bore installation beam arrangement, most short steel strand wires are finally arranged in the periphery hole position of anchor slab
Put；
Step 6：After the completion of 1# anchor slab lashings, steel strand wires are locked on 1# anchor slabs using steel strand wires card；
Step 7：After completing the locking of upper end steel strand wires, 2# anchor slabs are worn again at the top of steel Shu Shangduan, then using anchor ear by 1#
Anchor slab, 2# anchor slabs hoop are together；
Step 8：Along steel beam length direction at interval of 5m, steel beam is bundled with 16# galvanized wires；
Step 9：The steel Shu Caiyong cranes for completing top and bottom volume beam are sling, steel strand wires are sent into reserving hole channel simultaneously
The 16# galvanized wires every 5m colligation steel beams are released, until steel strand wires lower end passes from duct lower end；
Step 10：Steel Shu Shangduan close to duct it is suitable for reading when, 1# anchor slabs that steel Shu Shangduan is installed, 2# anchor slabs center with it is reserved
Duct center alignment, anchor slab is uniformly placed on the platform suitable for reading of duct；
Step 11：The anchor ear for anchoring two anchor slabs is released, takes 2# anchor slabs away, completes the installation of steel beam；
Step 12：Directly stretch-draw jack is installed on the 1# anchor slabs left, uses the tension stress of jack
20% initial tensioning force, the unblock of card temporary locking and the adjustment of steel Shu Shunzhi degree, loose degree are completed, answered subsequently into pre-
The power stretching construction stage.
The effect reached：
In the construction of king-tower upper king-post strut 3-10 section steel beam, crane is sent after adding anchor ear, card locking steel strand wires using double anchor slabs
Anchor technique, it is therefore prevented that debunching, steel strand wires gliding dislocations of the steel beam in hoisting process, avoid again in installation 1-3 section steel beams because of peace
Fill anchor slab when temporary fixing lifting galvanized wire or steel wire rope and cause steel beam fall and shift phenomenon generation so that steel stranded wire penetrating adapter
Positioning more precisely and it is safe, controllable, construction efficiency is substantially accelerated.
The present invention is not limited to above-mentioned embodiment, in the case of 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, it is characterised in that comprises the following steps：
Step 1：Platform of the smooth location as steel strands-woven bundle is selected, according to the length of steel beam, is set on Shu Pingtai is compiled
Two blocks of steel plates that can be moved, and a steel pipe is welded as the conduit for compiling beam on steel plate；
Step 2：Steel strand wires are penetrated in the conduit that beam is compiled for steel beam top and bottom by root；
Step 3：When compiling beam in steel beam lower end, steel beam is divided into three kinds of dislocation and placed, adjacent dislocation difference is 30cm, using galvanized wire
By the steel strand wires colligation of equal length together, and by long 30cm steel strand wires 30cm shorter than its steel strand wires are wrapped, in steel
The bottom of beam forms cone-shaped；
Step 4：A guiding cap is hinged with steel beam lower end；
Step 5：When steel Shu Shangduan compiles beam, the steel strand wires of most long beam are first arranged on to several centre bore positions of 1# anchor slabs, then
Vice-minister's beam of steel strand wires is faced into centre bore installation beam arrangement, 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 lashings, steel strand wires are locked on 1# anchor slabs using steel strand wires card；
Step 7：After completing the locking of upper end steel strand wires, 2# anchor slabs are worn again at the top of steel Shu Shangduan, then using anchor ear by 1# anchors
Plate, 2# anchor slabs 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 cranes for completing top and bottom volume beam are sling, steel strand wires are sent into reserving hole channel and released
Every the galvanized wire of 4m-6m colligation steel beams, until steel strand wires lower end passes from duct lower end；
Step 10：Steel Shu Shangduan close to duct it is suitable for reading when, 1# anchor slabs, 2# anchor slabs 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：The anchor ear for anchoring two anchor slabs is released, takes 2# anchor slabs away, completes the installation of steel beam；
Step 12：Stretch-draw jack directly is installed on the 1# anchor slabs left, uses the 10%- of the tension stress of jack
20% initial tensioning force, the unblock of card temporary locking and the adjustment of steel Shu Shunzhi degree, loose degree are completed, answered subsequently into pre-
The power stretching construction stage.
2. control method according to claim 1, it is characterised in that in step 1, the length of steel pipe for 50cm and
It is identical with reserving hole channel internal diameter.
3. control method according to claim 1, it is characterised in that in step 1, the size of steel plate is 200cm*
200cm*2cm。
4. control method according to claim 1, it is characterised in that in step 3, during steel strand wires colligation, use is tied up
Galvanized wire coiling is pricked no less than 2 circles.
5. control method according to claim 1, it is characterised 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, it is characterised in that in step 8, along steel beam length direction at interval of
Steel is tied in and is held together by 5m using galvanized wire.
7. according to the control method described in any one of claim 1,4,6, it is characterised in that galvanized wire is 16# galvanized wire.
8. control method according to claim 1, it is characterised in that in step 9, steel strand wires are sent into uniformly, in order
Reserving hole channel.
9. control method according to claim 1, it is characterised in that, should using the tensioning of jack in step 12
20% initial tensioning force of power, complete unblock and adjustment steel Shu Shunzhi degree, the loose degree of card temporary locking.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518977A (en) * | 2018-12-26 | 2019-03-26 | 中国核工业二四建设有限公司 | A kind of inverted U prestress wire anti-slip device and method |
| CN111517170A (en) * | 2020-04-07 | 2020-08-11 | 福建福清核电有限公司 | Wiring device of inverted U-shaped prestress braiding |
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| CN101798874A (en) * | 2010-03-08 | 2010-08-11 | 东南大学 | Pre-stress construction method of parallel steel stranded wire assembled cable in annular sealed steel pipe |
| 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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| CN109518977A (en) * | 2018-12-26 | 2019-03-26 | 中国核工业二四建设有限公司 | A kind of inverted U prestress wire anti-slip device and method |
| CN109518977B (en) * | 2018-12-26 | 2024-01-30 | 中国核工业二四建设有限公司 | Anti-slip device and method for inverted U-shaped prestress steel strand |
| CN111517170A (en) * | 2020-04-07 | 2020-08-11 | 福建福清核电有限公司 | Wiring device of inverted U-shaped prestress braiding |
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