CN103835235A - Steel-wire stay cable protection device and production method thereof - Google Patents
Steel-wire stay cable protection device and production method thereof Download PDFInfo
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- CN103835235A CN103835235A CN201410072034.1A CN201410072034A CN103835235A CN 103835235 A CN103835235 A CN 103835235A CN 201410072034 A CN201410072034 A CN 201410072034A CN 103835235 A CN103835235 A CN 103835235A
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- 238000004519 manufacturing process Methods 0.000 title description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 68
- 239000010959 steel Substances 0.000 claims abstract description 68
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229920000728 polyester Polymers 0.000 claims abstract description 18
- 239000011261 inert gas Substances 0.000 claims abstract description 13
- 239000011701 zinc Substances 0.000 claims abstract description 8
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000005488 sandblasting Methods 0.000 claims description 5
- 230000001012 protector Effects 0.000 claims 4
- 239000004698 Polyethylene Substances 0.000 abstract description 15
- -1 polyethylene Polymers 0.000 abstract description 15
- 229920000573 polyethylene Polymers 0.000 abstract description 15
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000001681 protective effect Effects 0.000 abstract description 5
- 238000005507 spraying Methods 0.000 abstract description 5
- 150000002500 ions Chemical class 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 239000003574 free electron Substances 0.000 description 2
- 238000005246 galvanizing Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
本发明公开了一种钢丝斜拉索防护装置，包括钢丝绳，所述钢丝绳的外层包裹有聚脂包带，聚脂包带的外层包裹有聚乙烯护套，聚乙烯护套为中空结构，该中空结构内注入惰性气体。将锌液通过空气冷却后直接喷涂到钢丝绳表面，起着物理覆盖作用，使得钢丝绳与水和空气等腐蚀介质隔离开来，由于喷涂时的温度很低，钢丝绳不会变形，其内部力学性能基本不受影响。由于锌粉的电化学性能较活泼，电极电位比钢丝绳低，在这个腐蚀电池中，锌粉是负极，钢丝绳为正极，锌粉失去电子，变成离子进去电介质溶液中而被腐蚀，其自由电子流向钢丝绳，使钢丝绳极化而受到保护。本装置技术手段简便易行，安全可靠、施工方便，大大提高了斜拉索的耐久性和安全性。
The invention discloses a steel wire stay cable protective device, which comprises a steel wire rope, the outer layer of the steel wire rope is wrapped with a polyester tape, the outer layer of the polyester tape is wrapped with a polyethylene sheath, and the polyethylene sheath is a hollow structure , inert gas is injected into the hollow structure. The zinc liquid is directly sprayed onto the surface of the steel wire rope after being cooled by air, which acts as a physical covering and isolates the steel wire rope from corrosive media such as water and air. Because the temperature during spraying is very low, the steel wire rope will not be deformed, and its internal mechanical properties are basically Not affected. Due to the active electrochemical performance of zinc powder, the electrode potential is lower than that of steel wire rope. In this corrosion battery, zinc powder is the negative electrode and steel wire rope is the positive electrode. Zinc powder loses electrons and becomes ions into the dielectric solution and is corroded. Flow to the wire rope, so that the wire rope is polarized and protected. The technical means of the device is simple and easy to implement, safe and reliable, convenient for construction, and greatly improves the durability and safety of the stay cables.
Description
技术领域technical field
本发明涉及桥梁防护领域，尤其涉及一种钢丝斜拉索防护装置及其制备方法。The invention relates to the field of bridge protection, in particular to a steel wire stay cable protection device and a preparation method thereof.
背景技术Background technique
斜拉索是斜拉桥的特有构件，它起着将主梁的恒载和活载通过索塔传递给地基的作用。由于斜拉索一般布置于梁体外部，并长期处于高应力状态下，其截面尺寸又小，故对腐蚀作用非常敏感，即使发生轻微的腐蚀其强度也会有较大的损失。目前在生产过程中，钢丝斜拉索一般采用热浸镀锌工艺处理，在处理前需要先经过酸洗、磷化工艺，钢丝表面会有酸、碱液的残余物，留下了腐蚀的隐患，使镀锌层容易产生脱落，并且在热浸镀锌过程中，由于镀液温度高，易使钢丝变形，产生内部应力，影响其力学性能。在使用过程中，钢丝斜拉索也经常因为外包热挤聚乙烯护套的老化、开裂，而出现不同程度的腐蚀，严重影响了斜拉桥桥跨结构的耐久性和安全性，不得不以换索的形式来保证桥梁的正常使用。而由换索产生的费用远远大于斜拉索的制造费用，还将严重影响交通，同时造成不良的社会影响。The cable-stayed cable is a unique component of the cable-stayed bridge, which plays the role of transmitting the dead load and live load of the main girder to the foundation through the cable tower. Since the stay cables are generally arranged outside the beam body and are under high stress for a long time, their cross-sectional dimensions are small, so they are very sensitive to corrosion, and their strength will be greatly lost even if slight corrosion occurs. At present, in the production process, steel wire stay cables are generally treated by hot-dip galvanizing process. Before the treatment, they need to go through pickling and phosphating process. There will be acid and alkali residues on the surface of the steel wire, leaving hidden dangers of corrosion. , so that the galvanized layer is easy to fall off, and in the process of hot-dip galvanizing, due to the high temperature of the bath, it is easy to deform the steel wire, generate internal stress, and affect its mechanical properties. During use, steel wire stay cables are often corroded to varying degrees due to the aging and cracking of the outer hot-extruded polyethylene sheath, which seriously affects the durability and safety of the bridge span structure of the cable-stayed bridge. Change the form of the cable to ensure the normal use of the bridge. And the expense produced by changing cable is far greater than the manufacturing cost of stay cable, also will have a strong impact on traffic, and cause bad social impact simultaneously.
发明内容Contents of the invention
本发明的目的在于克服上述现有技术的缺点和不足，提供一种工艺简单、造价低廉的钢丝斜拉索防护装置及其制备方法，提高斜拉索的耐久性和安全性。The object of the present invention is to overcome the shortcomings and deficiencies of the above-mentioned prior art, to provide a steel wire stay cable protection device with simple process and low cost and its preparation method, so as to improve the durability and safety of stay cables.
本发明通过下述技术方案实现：The present invention realizes through following technical scheme:
一种钢丝斜拉索防护装置，包括钢丝绳1，所述钢丝绳1的外层包裹有聚脂包带3，所述聚脂包带3的外层包裹有聚乙烯护套4，所述聚乙烯护套4为中空结构5，该中空结构5内注入惰性气体。A steel wire stay cable protective device, comprising a steel wire rope 1, the outer layer of the steel wire rope 1 is wrapped with a
所述钢丝绳1有多根钢丝组成，每根钢丝之间形成的间隙内填充有锌粉2。The steel wire rope 1 is composed of multiple steel wires, and the gap formed between each steel wire is filled with zinc powder 2 .
所述钢丝绳1的截面形状呈多边形。The section shape of the steel wire rope 1 is polygonal.
上述钢丝斜拉索防护装置的制备方法，包括下述步骤：The preparation method of the above-mentioned steel wire stay cable protective device comprises the following steps:
（1）钢丝绳1采用喷砂除锈后，将经过空气冷却后的锌液直接喷涂到钢丝绳1表面上，使钢丝绳1表面形成保护层；(1) After the steel wire rope 1 is derusted by sand blasting, the air-cooled zinc liquid is directly sprayed on the surface of the steel wire rope 1 to form a protective layer on the surface of the steel wire rope 1;
（2）将锌粉2填充至钢丝绳1的每根钢丝之间形成的间隙内；(2) Fill the zinc powder 2 into the gap formed between each steel wire of the steel wire rope 1;
（3）将钢丝绳1的外周包裹聚脂包带3；(3) Wrap the outer circumference of the steel wire rope 1 with
（4）在聚脂包带3的外层套上聚乙烯护套4；(4) Put a polyethylene sheath 4 on the outer layer of the
（5）最后将惰性气体注入聚乙烯护套4的中空结构5内，形成惰性气体层。(5) Finally, inert gas is injected into the
本发明相对于现有技术，具有如下的优点及效果：Compared with the prior art, the present invention has the following advantages and effects:
将锌液通过空气冷却后直接喷涂到钢丝绳1表面，起着物理覆盖作用，使得钢丝绳1与水和空气等腐蚀介质隔离开来，由于喷涂时的温度很低，钢丝绳1不会变形，其内部力学性能基本不受影响。The zinc liquid is directly sprayed onto the surface of the steel wire rope 1 after being cooled by air, which acts as a physical covering and isolates the steel wire rope 1 from corrosive media such as water and air. Because the temperature during spraying is very low, the steel wire rope 1 will not be deformed, and its interior The mechanical properties are basically not affected.
由于锌粉的电化学性能比较活泼，电极电位比钢丝绳1低，在这个腐蚀电池中，锌粉是负极，钢丝绳1为正极，锌粉失去电子，变成离子进去电介质溶液中而被腐蚀，其自由电子流向钢丝绳1，使钢丝绳1极化而受到保护。Because the electrochemical performance of zinc powder is relatively active, the electrode potential is lower than that of steel wire rope 1. In this corrosion battery, zinc powder is the negative electrode, and steel wire rope 1 is the positive electrode. Zinc powder loses electrons and becomes ions into the dielectric solution and is corroded. The free electrons flow to the wire rope 1, so that the wire rope 1 is polarized and protected.
聚脂包带3缠绕在钢丝绳1外侧，用以固定和保护经过喷锌和锌粉工艺处理后的钢丝绳1。
由于聚乙烯护套4对钢丝绳1起着隔绝水分和腐蚀气体的作用，同时还能阻挡紫外线、防止机械性损伤。Because the polyethylene sheath 4 plays the role of isolating moisture and corrosive gas to the steel wire rope 1, it can also block ultraviolet rays and prevent mechanical damage at the same time.
惰性气体注入聚乙烯护套4的中空结构5内，形成惰性气体层，从而进一步提高钢丝绳1的耐腐蚀性能。Inert gas is injected into the
本发明技术手段简便易行，安全可靠、施工方便，大大提高了斜拉索的耐久性和安全性。The technical means of the invention is simple and easy to implement, safe and reliable, convenient for construction, and greatly improves the durability and safety of the stay cables.
附图说明Description of drawings
图1为本发明截面结构示意图。Fig. 1 is a schematic cross-sectional structure diagram of the present invention.
具体实施方式Detailed ways
下面结合具体实施例对本发明作进一步具体详细描述。The present invention will be described in further detail below in conjunction with specific embodiments.
实施例Example
如图1所示。本发明一种钢丝斜拉索防护装置，包括钢丝绳1，所述钢丝绳1的外层包裹有聚脂包带3，所述聚脂包带3的外层包裹有聚乙烯护套4，所述聚乙烯护套4为中空结构5，该中空结构5内注入惰性气体。该中空结构为密封中空结构。As shown in Figure 1. The present invention is a protective device for a steel wire stay cable, comprising a steel wire rope 1, the outer layer of the steel wire rope 1 is wrapped with a
所述钢丝绳1有多根钢丝组成，每根钢丝之间形成的间隙内填充有锌粉2。The steel wire rope 1 is composed of multiple steel wires, and the gap formed between each steel wire is filled with zinc powder 2 .
所述钢丝绳1的截面形状呈多边形。The section shape of the steel wire rope 1 is polygonal.
上述钢丝斜拉索防护装置的制备方法，包括下述步骤：The preparation method of the above-mentioned steel wire stay cable protective device comprises the following steps:
（1）钢丝绳1采用喷砂除锈后，将经过空气冷却后的锌液直接喷涂到钢丝绳1表面上，使钢丝绳1表面形成保护层；(1) After the steel wire rope 1 is derusted by sand blasting, the air-cooled zinc liquid is directly sprayed on the surface of the steel wire rope 1 to form a protective layer on the surface of the steel wire rope 1;
（2）将锌粉2填充至钢丝绳1的每根钢丝之间形成的间隙内；(2) Fill the zinc powder 2 into the gap formed between each steel wire of the steel wire rope 1;
（3）将钢丝绳1的外周包裹聚脂包带3；(3) Wrap the outer circumference of the steel wire rope 1 with
（4）在聚脂包带3的外层套上聚乙烯护套4；(4) Put a polyethylene sheath 4 on the outer layer of the
（5）最后将惰性气体注入聚乙烯护套4的中空结构5内，形成惰性气体层。(5) Finally, inert gas is injected into the
所述聚脂包带3可采用纤维增强聚脂包带。The
所述喷砂除锈，即采用喷砂工艺，用于除去钢丝绳1表面的锈迹。The sandblasting rust removal refers to the use of sandblasting technology to remove the rust on the surface of the steel wire rope 1 .
将锌液通过空气冷却后直接喷涂到钢丝绳1表面，起着物理覆盖作用，使得钢丝绳1与水和空气等腐蚀介质隔离开来，由于喷涂时的温度很低，钢丝绳1不会变形，其内部力学性能基本不受影响。The zinc liquid is directly sprayed onto the surface of the steel wire rope 1 after being cooled by air, which acts as a physical covering and isolates the steel wire rope 1 from corrosive media such as water and air. Because the temperature during spraying is very low, the steel wire rope 1 will not be deformed, and its interior The mechanical properties are basically not affected.
由于锌粉的电化学性能比较活泼，电极电位比钢丝绳1低，在这个腐蚀电池中，锌粉是负极，钢丝绳1为正极，锌粉失去电子，变成离子进去电介质溶液中而被腐蚀，其自由电子流向钢丝绳1，使钢丝绳1极化而受到保护。Because the electrochemical performance of zinc powder is relatively active, the electrode potential is lower than that of steel wire rope 1. In this corrosion battery, zinc powder is the negative electrode, and steel wire rope 1 is the positive electrode. Zinc powder loses electrons and becomes ions into the dielectric solution and is corroded. The free electrons flow to the wire rope 1, so that the wire rope 1 is polarized and protected.
聚脂包带3缠绕在钢丝绳1外侧，用以固定和保护经过喷锌和锌粉工艺处理后的钢丝绳1。
由于聚乙烯护套4对钢丝绳1起着隔绝水分和腐蚀气体的作用，同时还能阻挡紫外线、防止机械性损伤。Because the polyethylene sheath 4 plays the role of isolating moisture and corrosive gas to the steel wire rope 1, it can also block ultraviolet rays and prevent mechanical damage at the same time.
惰性气体注入聚乙烯护套4的中空结构5内，形成惰性气体层，从而进一步提高钢丝绳1的耐腐蚀性能。Inert gas is injected into the
如上所述，便可较好地实现本发明。As described above, the present invention can be preferably carried out.
本发明的实施方式并不受上述实施例的限制，其他任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。The implementation of the present invention is not limited by the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods, and are all included in within the protection scope of the present invention.
Claims (4)
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| CN104652272A (en) * | 2014-06-20 | 2015-05-27 | 柳州市冠桥预应力机械有限公司 | Connecting method of protecting sleeve for inhaul cable |
| CN107419662A (en) * | 2017-08-23 | 2017-12-01 | 柳州欧维姆机械股份有限公司 | A kind of Ha Fushi Novel fireproofs drag-line and preparation method thereof |
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| CN103835235B (en) | 2016-08-17 |
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