CN109098086A - A kind of anticorrosion structure and method of suspension cable anchor head steel strand wires - Google Patents
A kind of anticorrosion structure and method of suspension cable anchor head steel strand wires Download PDFInfo
- Publication number
- CN109098086A CN109098086A CN201811227418.0A CN201811227418A CN109098086A CN 109098086 A CN109098086 A CN 109098086A CN 201811227418 A CN201811227418 A CN 201811227418A CN 109098086 A CN109098086 A CN 109098086A
- Authority
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- China
- Prior art keywords
- steel strand
- strand wires
- suspension cable
- support tube
- shield
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 58
- 239000010959 steel Substances 0.000 title claims abstract description 58
- 239000000725 suspension Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000005260 corrosion Methods 0.000 claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000004873 anchoring Methods 0.000 claims abstract description 6
- 238000010276 construction Methods 0.000 claims abstract description 6
- 238000007596 consolidation process Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 7
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 3
- 241001474791 Proboscis Species 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000004382 potting Methods 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims 1
- 235000019698 starch Nutrition 0.000 claims 1
- 239000008107 starch Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000003755 preservative agent Substances 0.000 description 3
- 230000002335 preservative effect Effects 0.000 description 3
- 241000256135 Chironomus thummi Species 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses the anticorrosion structures and method of a kind of suspension cable anchor head steel strand wires, the anticorrosion structure includes several Cable Stayed Steel twisted wires, it is set in the sealing drum that on the steel strand wires and head and the tail both ends separate the steel strand wires passed through by root, it connects and fixes the sealing drum and set the support tube of adjusting nut, support tube tail end is fixed on for anchoring the anchor slab and intermediate plate of Cable Stayed Steel twisted wire, the shield for covering the end of the steel strand wires is tightly connected with the anchor slab, the cable guide pipe that outside the support tube and end is equipped with suspension cable anchor plate is integrally set in main body concrete or steel construction consolidation, the support tube is by the nut support on the suspension cable anchor plate of the cable guide pipe；Anti-corrosion material is separately filled in the sealing drum, support tube and shield.The present invention has many advantages, such as favorable anti-corrosion effect, extends suspension cable service life.
Description
Technical field
The invention belongs to the aseptic technics of stay cable of cable-stayed bridge anchor head, and in particular to a kind of suspension cable anchor head steel strand wires are prevented
Rotten structure and method.
Background technique
Suspension cable anchor head anticorrosive construction is the common critical process of suspension cable engineering.It is after steel strand stay cable installation tensioning
Guarantee that stay cable force safety and Cable Stayed Steel twisted wire are durable to extend the stay cable replacing period, generallys use antiseptic oil
Rouge, foamed glue, industrial wax carry out preservative treatment to anchor head steel strand wires, work clip sheet.Existing suspension cable anchor head anti-corrosion method has
Significant limitation: it is apt to deteriorate by natural environment influence anti-corrosion material, lead to will to replace for 3~5 years anti-corrosion material, at replacement
Difficulty of construction is big for reason, and construction cost is high, and it is not in place and suspension cable is caused to be replaced ahead of time to be easy to appear anti-corrosion.
Summary of the invention
The object of the present invention is to provide the suspension cable anchor head steel strand wires of a kind of favorable anti-corrosion effect, extension suspension cable service life
Anticorrosion structure and method.
Realizing the technical solution of the object of the invention is:
The anticorrosion structure of suspension cable anchor head steel strand wires provided by the invention, including several Cable Stayed Steel twisted wires, it is set in the steel
On twisted wire and head and the tail both ends are by the sealing drum that the steel strand wires passed through are separated by root, connection and the fixed sealing drum and set
The support tube of adjusting nut is fixed on support tube tail end for anchoring the anchor slab and intermediate plate, and the anchor slab of Cable Stayed Steel twisted wire
Sealed connection is integrally set in described by the shield that the end of the steel strand wires covers, with main body concrete or steel construction consolidation
Outside support tube and end is equipped with the cable guide pipe of suspension cable anchor plate, and the support tube is by the nut support in the cable guide pipe
Suspension cable anchor plate on, by between the adjustable anchor slab of rotating nuts and the suspension cable anchor plate it is axial away from
From；Anti-corrosion material is separately filled in the sealing drum, support tube and shield.
The anchor slab of the support tube tail end passes through work clip sheet for the steel strand anchoring stress.
The head end of the sealing drum is wire sub-panel, and the wire sub-panel will be arranged with the steel of the small pillar of PE by sealing ring
Twisted wire sealing.
The anti-corrosion method of suspension cable anchor head steel strand wires provided by the invention, using the anti-corrosion of the suspension cable anchor head steel strand wires
Structure, comprising the following steps:
Step 1: after each component installation of anticorrosion structure, completing the installation of Cable Stayed Steel twisted wire, cable tension, pass through rotating nuts
It adjusts the axial distance between the anchor slab and the suspension cable anchor plate and meets design requirement, check whether wire sub-panel seals not
Leak anti-corrosion material, if having the gap must first take measures to block, girder end anchor head and Sarasota Inner bolt head lower curtate position work clip sheet b
Gap proboscis rifle foam-injection glue, then pushed down with locking plate；The anchor slab is provided with injected hole, injected hole court when installation
To low direction.
Step 2: interior madjack pipe in the sealing drum is protruded by injected hole setting, and injected hole installation with it is described
The mud jacking mouth valve of interior madjack pipe connection.
Step 3: using air pressure grouter by anti-corrosion material through mud jacking mouth valve and interior madjack pipe inject the support tube and
Full entire space is filled in sealing drum, is solidified to anti-corrosion material, mud jacking mouth valve of dismantling.
Step 4: the shield being installed, mud jacking mouth valve is set on the shield, using grouter by preserving timber
Material injects in the shield through mud jacking mouth valve fills full entire space.
Step 5: after the anti-corrosion material solidification in shield, the mud jacking mouth valve dismantled on shield.
The anti-corrosion material is that " Gu Te nation " is epoxy binder modified --- JN-M structure potting compound.
Beneficial effects of the present invention:
Anticorrosion structure of the present invention is simple and reliable, carries out preservative treatment to anchor head steel strand wires, work clip sheet using anti-corrosion material, avoids
Multiple preservative treatment, an anti-corrosion constant feast are needed during stay cable replacing.Anti-corrosion material good fluidity, it is all-pervasive,
Volume is not shunk after solidification, and resistance to compression, tensile strength are high, and caking property is good, is bonded to one with anchorage, and sealing effect is good, no moisture,
Ageing-resistant reachable decades, suspension cable service life, great popularization can be extended very well.
Technical solution of the present invention is further illustrated with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is the schematic diagram of anticorrosion structure of the present invention.
Fig. 2, Fig. 3 are the different step schematic diagram of anti-corrosion method of the present invention respectively.
Fig. 4 is the grouter schematic diagram that anti-corrosion method of the present invention uses.
Specific embodiment
See Fig. 1, the anticorrosion structure of suspension cable anchor head steel strand wires provided by the invention, including several Cable Stayed Steel twisted wire a, set
It is located at sealing drum h, connection and fixation that on the steel strand wires a and head and the tail both ends separate the steel strand wires a passed through by root
It the sealing drum h and sets the support tube z of adjusting nut m, be fixed on support tube z tail end for anchoring the anchor slab of Cable Stayed Steel twisted wire
C and intermediate plate b, the shield s for covering the end of the steel strand wires a and main body concrete (steel are tightly connected with the anchor slab c
Structure) consolidation is integrally set in outside the support tube z and end is equipped with the cable guide pipe g, the support tube z of suspension cable anchor plate d
It is supported on the suspension cable anchor plate d of the cable guide pipe g by the nut m, passes through the adjustable anchor slab of rotating nuts m
C(anchor point) and the rope suspension cable anchor plate d between axial distance；Divide in the sealing drum h, support tube z and shield s
Not Tian Chongyou anti-corrosion material t, anti-corrosion material t using " Gu Te nation " it is epoxy binder modified --- JN-M structure potting compound (pressure
Infuse steel bonding glue)；The steel strand wires a is anchored stress by work clip sheet b by the anchor slab c, and the shield seals steel strand wires；
The head end of the sealing drum h is wire sub-panel f, and the wire sub-panel f will be arranged with the steel strand wires of the small pillar e of PE by sealing ring
A sealing.
The anti-corrosion method of suspension cable anchor head steel strand wires provided by the invention, using the anti-corrosion of the suspension cable anchor head steel strand wires
Structure, comprising the following steps:
Step 1: after each component installation of anticorrosion structure, Cable Stayed Steel twisted wire a installation, cable tension are completed, by rotating spiral shell
The axial distance that female m adjusts between anchor slab (anchor point) the c and suspension cable anchor plate d meets design requirement, checks and divides
Whether filament plate f, which seals, does not leak anti-corrosion material t, if having the gap must first take measures to block, anchor in girder end anchor head and Sarasota
The gap proboscis rifle foam-injection glue of head lower curtate position work clip sheet b, is then pushed down with locking plate (not drawing)；The anchor slab c is set
It is equipped with injected hole i, injected hole i is towards low direction when installation, as shown in Figure 2.
Step 2: interior madjack pipe q in the sealing drum h is protruded by injected hole i setting, and injected hole i installation with
The mud jacking mouth valve k of the interior madjack pipe q connection.
Step 3: anti-corrosion material t is injected through mud jacking mouth valve k and interior madjack pipe q by the support tube using air pressure grouter
Full entire space is filled in z and sealing drum h, is solidified to anti-corrosion material, mud jacking mouth valve of dismantling, as shown in Figure 3.
The grouter is as shown in figure 4, include setting the air pressure tank 110 of fastening bolt 104 and with seal groove and sealing strip 103
Seal cover board 101, seal cover board 101 is equipped with exhaust valve 105, air inlet pipe 106, air gauge 109, and takes slurry valve 108 out of
Outer madjack pipe 107, valve 108 is connected with midge steel pipe 111, and 111 length of midge steel pipe is close to the bottom of storage vat 102, air inlet
Pipe 106 is connect with air compressor machine, and outer madjack pipe 107 is connected with the mud jacking mouth valve k on sealing drum h, by the air inlet of air pressure grouter
Pipe 106 is connect with air compressor machine.
Anti-corrosion material t is poured into storage vat 102, then storage vat 102 is put into air pressure grouter, seal cover board is installed
101, surrounding bolt is tightened.
Pulp valve 108 is closed, opens the valve in air inlet pipe 106, starting air compressor machine is inflated, when in air pressure grouter
When air pressure reaches 0.2~0.4MPa, opens mud jacking mouth valve k and pulp valve 108 switchs, anti-corrosion material t is in air pressure at this time
Enter in the sealing drum h of anchorage under power through outer madjack pipe 107 and interior madjack pipe q.
After anti-corrosion material t has been pressed in storage vat 102, mud jacking mouth valve k is shut, is then turned off air compressor machine, opens grouting
The exhaust valve 105 of machine unclamps seal cover board 101 after exhaust, take out storage vat 102 and continue to pour into anti-corrosion material t, be placed again into gas
Perfusion in grouter is pressed, until filling in the sealing drum h of anchorage.
After filling in sealing drum h, mud jacking mouth valve k and outer madjack pipe 107 of dismantling are closed, with industrial alcohol washes storing
Bucket cleans outer madjack pipe 107, in cylinder h to be sealed after anti-corrosion material t solidification, timely removing anchorage device grout hole mud jacking mouth valve k
(interior madjack pipe q is not removed), locking plate clear up foamed glue.
Step 4: the shield s is installed, shield s is fixed by bolts on anchor slab c, glue sealing sealed around,
Mud jacking mouth valve k is set on the shield s, is infused anti-corrosion material t through the mud jacking mouth valve k on shield s using grouter
Enter and fill full entire space in the shield s, as shown in Figure 1.
Step 5: after the anti-corrosion material t solidification in shield s, the mud jacking mouth valve k that dismantles on shield s.
Claims (5)
1. a kind of anticorrosion structure of suspension cable anchor head steel strand wires, it is characterized in that described in including several Cable Stayed Steel twisted wires, being set in
Sealing drum that on steel strand wires and head and the tail both ends separate the steel strand wires passed through by root, connection and the fixed sealing drum and
If the support tube of adjusting nut is fixed on support tube tail end for anchoring the anchor slab and intermediate plate, and the anchor of Cable Stayed Steel twisted wire
Plate, which is tightly connected, is integrally set in institute for shield and main body concrete or the steel construction consolidation that the end of the steel strand wires covers
It states outside support tube and end is equipped with the cable guide pipe of suspension cable anchor plate, the support tube is led by the nut support in the rope
On the suspension cable anchor plate of pipe, by between the adjustable anchor slab of rotating nuts and the suspension cable anchor plate it is axial away from
From；Anti-corrosion material is separately filled in the sealing drum, support tube and shield.
2. the anticorrosion structure of suspension cable anchor head steel strand wires according to claim 1, it is characterized in that the support tube tail end
Anchor slab passes through work clip sheet for the steel strand anchoring stress.
3. the anticorrosion structure of suspension cable anchor head steel strand wires according to claim 2, it is characterized in that the head end of the sealing drum
For wire sub-panel, the wire sub-panel is sealed the steel strand wires for being arranged with the small pillar of PE by sealing ring.
4. a kind of suspension cable anchor head steel of anticorrosion structure using any suspension cable anchor head steel strand wires of claims 1 to 3 twists
The anti-corrosion method of line, comprising the following steps:
Step 1: after each component installation of anticorrosion structure, completing the installation of Cable Stayed Steel twisted wire, cable tension, pass through rotating nuts
It adjusts the axial distance between the anchor slab and the suspension cable anchor plate and meets design requirement, check whether wire sub-panel seals not
Leak anti-corrosion material, if having the gap must first take measures to block, girder end anchor head and Sarasota Inner bolt head lower curtate position work clip sheet b
Gap proboscis rifle foam-injection glue, then pushed down with locking plate；The anchor slab is provided with injected hole, injected hole court when installation
To low direction；
Step 2: the interior madjack pipe in the sealing drum being protruded by injected hole setting, and in injected hole installation and the internal pressure
Starch the mud jacking mouth valve of pipe connection；
Step 3: anti-corrosion material is injected through mud jacking mouth valve and interior madjack pipe by the support tube and sealing using air pressure grouter
Full entire space is filled in cylinder, is solidified to anti-corrosion material, mud jacking mouth valve of dismantling；
Step 4: the shield being installed, mud jacking mouth valve is set on the shield, is passed through anti-corrosion material using grouter
Mud jacking mouth valve, which injects in the shield, fills full entire space；
Step 5: after the anti-corrosion material solidification in shield, the mud jacking mouth valve dismantled on shield.
5. the anti-corrosion method of suspension cable anchor head steel strand wires according to claim 4, it is characterized in that the anti-corrosion material be " Gu
Te Bang " is epoxy binder modified --- JN-M structure potting compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227418.0A CN109098086A (en) | 2018-10-22 | 2018-10-22 | A kind of anticorrosion structure and method of suspension cable anchor head steel strand wires |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811227418.0A CN109098086A (en) | 2018-10-22 | 2018-10-22 | A kind of anticorrosion structure and method of suspension cable anchor head steel strand wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109098086A true CN109098086A (en) | 2018-12-28 |
Family
ID=64868991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811227418.0A Pending CN109098086A (en) | 2018-10-22 | 2018-10-22 | A kind of anticorrosion structure and method of suspension cable anchor head steel strand wires |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109098086A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990995A (en) * | 2019-04-17 | 2019-07-09 | 广州珠江黄埔大桥建设有限公司 | A kind of protective survey device of bridge anchor system anchor head |
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|---|---|---|---|---|
| GB1149484A (en) * | 1966-04-20 | 1969-04-23 | Stressed Concrete Design Ltd | Improvements in or relating to prestressed structures |
| CN1469058A (en) * | 2002-07-16 | 2004-01-21 | 同济大学 | Outer prestress system and its construction process |
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| CN202500088U (en) * | 2012-03-09 | 2012-10-24 | 柳州豪姆机械有限公司 | Steel strand chilled-casting anchor rope |
| AU2011365314A1 (en) * | 2011-04-15 | 2013-10-24 | Soletanche Freyssinet | Method of protecting the end of a multi-tendon cable |
| CN209178825U (en) * | 2018-10-22 | 2019-07-30 | 湖南路桥建设集团有限责任公司 | A kind of anticorrosion structure of suspension cable anchor head steel strand wires |
-
2018
- 2018-10-22 CN CN201811227418.0A patent/CN109098086A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| GB1149484A (en) * | 1966-04-20 | 1969-04-23 | Stressed Concrete Design Ltd | Improvements in or relating to prestressed structures |
| CN1469058A (en) * | 2002-07-16 | 2004-01-21 | 同济大学 | Outer prestress system and its construction process |
| CN101210447A (en) * | 2006-12-31 | 2008-07-02 | 柳州欧维姆机械股份有限公司 | Steel strand integral bundle extrusion anchor cable guy cable |
| AU2011365314A1 (en) * | 2011-04-15 | 2013-10-24 | Soletanche Freyssinet | Method of protecting the end of a multi-tendon cable |
| CN202500088U (en) * | 2012-03-09 | 2012-10-24 | 柳州豪姆机械有限公司 | Steel strand chilled-casting anchor rope |
| CN209178825U (en) * | 2018-10-22 | 2019-07-30 | 湖南路桥建设集团有限责任公司 | A kind of anticorrosion structure of suspension cable anchor head steel strand wires |
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| Title |
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| 《建筑结构补强加固技术》编写组, 中国铁道出版社出版 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109990995A (en) * | 2019-04-17 | 2019-07-09 | 广州珠江黄埔大桥建设有限公司 | A kind of protective survey device of bridge anchor system anchor head |
| CN109990995B (en) * | 2019-04-17 | 2024-05-31 | 广州珠江黄埔大桥建设有限公司 | Protection monitoring device of bridge anchor system anchor head |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181228 |
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