CN218291597U - Cable body, gaseous phase inhibition parallel steel wire inhaul cable and device - Google Patents
Cable body, gaseous phase inhibition parallel steel wire inhaul cable and device Download PDFInfo
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- CN218291597U CN218291597U CN202121429313.0U CN202121429313U CN218291597U CN 218291597 U CN218291597 U CN 218291597U CN 202121429313 U CN202121429313 U CN 202121429313U CN 218291597 U CN218291597 U CN 218291597U
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Abstract
The utility model provides a parallel steel wire cable of cable body, gaseous phase inhibition and device, this cable body include steel wire, band, plastics sheath, are woven the cable with certain permutation and combination by many steel wires and form the strand, the winding of strand surface the band, the outer surface cover of band has plastics sheath, the steel wire at both ends exposes outside, adds gaseous phase inhibitor in the cable body. The utility model has the advantages that: 1. the corrosion prevention mechanism is clear, the technology is mature, and the measures are simple; 2. the steel wire damage and the corrosion prevention defect caused by wet air in the steel wire in the cable manufacturing process are automatically compensated; 3. the corrosion condition which is inevitable due to the characteristics of the structure is improved, and the full-section omnibearing corrosion prevention can be achieved; 4. the corrosion resistance and durability of the stay cable body are prolonged by a corrosion resistance technology on the basis of the existing stay cable body corrosion resistance technology; 5. low investment cost and high social and economic benefits.
Description
Technical Field
The utility model relates to a bridge construction field especially relates to a parallel steel wire cable of cable body, gaseous phase inhibition and device.
Background
In the bridge engineering, the parallel steel wire inhaul cable is an inseparable whole formed by connecting anchorage devices and cable bodies in series, is a main stressed steel member of a cable-stayed bridge, and has a structure shown in figure 1.
The parallel steel wire cable body is formed by twisting a plurality of steel wires into strands through certain arrangement and combination, spirally winding and tightly wrapping the strands with wrapping tapes, extruding and wrapping plastics or high-density polyethylene (plastics) on a plastic extruder to form a sheath, wrapping the steel wires and the wrapping tapes with the sheath, and generally dividing the sheath into an inner layer and an outer layer.
The corrosion resistance and durability of the structure form are achieved by means of the self corrosion resistance of the steel wire, such as zinc plating or epoxy coating spraying on the surface of the steel wire, and the steel wire is isolated from external water vapor, rainwater and the like through the high-density polyethylene sheath. However, the durability of the anticorrosion structure in practical engineering often cannot reach the designed expected life, and the main reasons are that:
1. the galvanized or epoxy sprayed steel wire is inevitably scratched locally by a galvanized coating or an epoxy coating during the process of manufacturing the cable, so that the protection capability is reduced.
2. The galvanized or epoxy sprayed steel wire has insufficient thickness and uneven thickness, and the plating and coating have the defects of cracks, pinholes and the like to cause the reduction of the corrosion resistance.
3. Gaps exist between the steel wires in the process of making the cables, and the gaps are filled with moisture contained in the air and exist for a long time, so that the steel wires are corroded; secondly, when the external temperature changes, the gaps of the steel wires are expanded with heat and contracted with cold to exchange air, and bring moisture or various corrosive media into the gaps to promote the corrosion of the steel wires.
The stay cable anchorage is made of steel parts, is an anchoring component of a stay cable and mainly transfers the cable force of the stay cable to a bridge body or a bridge tower. The current anchorage device adopts an anti-corrosion mode (1) through in-plant zinc plating or zinc impregnation; (2) Painting the exposed part after the installation on the engineering site is finished; (3) smearing rust-proof grease; and (4) filling filler into the cable guide pipe. However, the use effect of these anticorrosion structures in practical engineering is often unsatisfactory, and the anticorrosion structures become one of serious disaster areas of cable corrosion diseases, mainly because:
1. the galvanization has limited anti-corrosion capability and insufficient durability, and the coating is partially scratched in the installation process, so that the protection capability is reduced.
2. The modes of paint repair and coating of anticorrosion grease on the exposed part can only be local anticorrosion, cannot solve the anticorrosion durability of the whole anchorage device, and cannot prevent the corrosion of steel wires in the anchorage device.
3. When the deviation of the embedded part, the aging and cracking of the structure, the performance degradation and the elasticity reduction and the sealing performance of the waterproof cover of the anchorage device are insufficient, water can permeate into the anchorage device to accelerate the corrosion of the anchorage device, and the corrosion of the steel wire of the cable body is also caused.
4. The filling material is poured into the cable guide pipe, so that the trouble is brought to later-stage inspection, maintenance and replacement, gaps are generated between the anchor or the cable body and the filling material due to the filling material, rainwater with poor sealing of the waterproof cover still permeates, and the corrosion of the anchor and the cable body steel strand or steel wire is caused.
5. The gap in the anchorage device is large, and when the anchorage device expands with heat and contracts with cold, the inside and outside air exchange brings in moisture vapor, so that the steel structure in the anchorage device and the steel wires of the cable body are corroded.
The bridge inhaul cable industry generally considers that two main factors which influence the service life of the inhaul cable are fatigue and corrosion. Almost all cable replacements are associated with corrosion. Therefore, the inhaul cable corrosion prevention is more important, and the inhaul cable steel wire and the steel structure corrosion of the inhaul cable are directly related to water leakage and water seepage; particularly, the corrosion of the stay anchor is more severe.
SUMMERY OF THE UTILITY MODEL
The utility model provides a cable body, including steel wire, band, plastics sheath, weave the cable with certain permutation and combination by many steel wires and form the strand, the winding of strand surface the band, the outer surface cover of band has plastics sheath, the steel wire at both ends exposes outside, adds the gaseous corrosion inhibitor in the cable body.
As a further improvement of the utility model, the vapor phase inhibitor is coated on the surface of the steel wire and/or the vapor phase inhibitor is coated on the surface of the strand.
As a further improvement of the utility model, the surface of the belting is coated with a vapor phase corrosion inhibitor, or the vapor phase corrosion inhibitor is added into the inside of the belting, thereby manufacturing the belting with the vapor phase corrosion inhibition function.
As a further improvement of the utility model, the plastic sheath is provided with a vapor phase corrosion inhibitor, and the plastic sheath is at least two layers.
As a further improvement of the utility model, the outer surface of the cable strand is wound with a gas phase corrosion inhibition belt, and the gas phase corrosion inhibition belt is made of a gas phase corrosion inhibitor and a matrix; the wrapping tape wraps the gas-phase corrosion inhibition tape, or the gas-phase corrosion inhibition tape and the wrapping tape are integrally formed.
The utility model also provides a parallel steel wire cable of gaseous phase inhibition, include the cable body, ground tackle, the ground tackle is two, and two ground tackle are installed respectively the cable body both ends, the ground tackle includes anchor cup, a sealed section of thick bamboo, an extension section of thick bamboo, divides silk board, sealing device, the inside steel wire of anchor cup is through pouring into the filler with the steel wire and divide the silk board anchor on the anchor cup, the anchor cup with a sealed section of thick bamboo links to each other, an extension section of thick bamboo passes through sealing device with plastic sheath and seals, the anchor cup a sealed section of thick bamboo with an extension cylindric becomes airtight space, airtight space intussuseption is filled with gaseous phase corrosion inhibitor or gaseous phase corrosion inhibitor carrier.
As a further improvement of the utility model, the anchor cup passes through the screw thread with the sealing cylinder is connected and sealed, an extension section of thick bamboo pass through the screw thread with the sealing cylinder is connected and sealed.
As a further improvement of the utility model, the vapor phase corrosion inhibitor carrier is made of a base body and a vapor phase corrosion inhibitor compounded with the base body.
The utility model also provides a device, the device includes the utility model discloses parallel steel wire cable of gaseous phase inhibition, buckler, pre-buried pipe, bumper shock absorber, pipe seal device, the parallel steel wire cable of gaseous phase inhibition stretches into in the pre-buried pipe, pre-buried pipe with install between the parallel steel wire cable of gaseous phase inhibition the bumper shock absorber, the buckler install in pre-buried pipe tip reaches the parallel steel wire cable of gaseous phase inhibition is outside, pipe seal device installs at pre-buried pipe tip and the parallel steel wire cable space clearance position department of gaseous phase inhibition, pre-buried pipe intussuseption is filled with gaseous phase corrosion inhibitor or gaseous phase corrosion inhibitor carrier.
As a further improvement, the device further comprises a protective cover, the end of the embedded conduit is installed on the protective cover, and the protective cover is filled with a vapor phase corrosion inhibitor or a vapor phase corrosion inhibitor carrier.
The utility model has the advantages that: 1. the corrosion prevention mechanism is clear, the technology is mature, and the measures are simple; 2. the cable self-repairing device can automatically make up for the damage of the steel wire and the corrosion prevention defect caused by the wet air in the steel wire in the cable manufacturing process; 3. the corrosion condition which inevitably exists due to the characteristics of the structure is improved, and the full-section omnibearing corrosion prevention can be achieved; 4. the corrosion resistance and durability of the stay cable body are prolonged by a corrosion resistance technology on the basis of the existing stay cable body corrosion resistance technology; 5. low investment cost and high social and economic benefits.
Drawings
FIG. 1 is a schematic diagram of a background art configuration;
FIG. 2 is a schematic cross-sectional view of a prior art parallel wire cable body;
fig. 3 is a schematic cross-sectional view of the cable body of the present invention;
FIG. 4 is a schematic view of the vapor phase corrosion inhibition parallel steel wire inhaul cable structure of the utility model;
fig. 5 is a schematic view of the apparatus of the present invention.
Detailed Description
The utility model discloses a gas phase corrosion inhibition parallel steel wire inhaul cable 200, which makes up the above-mentioned corrosion resistance deficiency in the cable making process by introducing a gas phase corrosion inhibition technology into the parallel steel wire inhaul cable structure, improves the corrosion condition which inevitably exists due to the characteristics of the structure, can achieve the all-round corrosion resistance of the whole section, and prolongs the corrosion resistance durability; carry out gaseous phase anticorrosion to the ground tackle structure, when water infiltration ground tackle is inside, also can effectively restrain the corruption and take place, reduce the corrosion risk. The technology can improve the integral corrosion resistance and durability of the inhaul cable structure, and effectively prolong the safe service life of the bridge.
The utility model discloses a parallel steel wire cable 200 of vapor phase inhibition includes the cable body 100 and ground tackle, in cable body 100 or ground tackle, adds the vapor phase inhibition material, makes cable and supporting structure have vapor phase inhibition ability. The gas phase corrosion inhibitor is a composite gas phase corrosion inhibitor, which volatilizes water soluble special substances to react with water in the air through volatilization, contact and diffusion to dissociate or decompose corrosion inhibiting groups to attach to the surface of metal to form an anticorrosive protective layer, thereby cutting off electrons from moving from an anode to a cathode, inhibiting the occurrence of corrosion electrochemical reaction and corrosion chemical reaction, simultaneously preventing substances accelerating metal corrosion from corroding the surface of the metal, and achieving the purpose of long-acting corrosion prevention.
As shown in fig. 3, the cable body 100 includes steel wires 1, a wrapping tape 2, and a plastic sheath 3, a plurality of steel wires 1 are braided in a certain arrangement to form a cable strand, the wrapping tape 2 is wound around the outer surface of the cable strand, the plastic sheath 3 is sleeved on the outer surface of the wrapping tape 2, the steel wires 1 at two ends are exposed, and a gas phase corrosion inhibitor is added into the cable body 100.
Embodiments of the cable body 100 include the following:
the first embodiment: the surface of the steel wire 1 is coated with a vapor phase corrosion inhibitor and/or the surface of the strand is coated with a vapor phase corrosion inhibitor. The steel wire 1 can be a polished steel wire, a galvanized steel wire, an epoxy spraying steel wire and a steel wire after treatment. The epoxy spraying steel wire can be further added with a vapor phase inhibitor in the epoxy powder to form the epoxy coating steel wire with vapor phase inhibition function.
The second embodiment: the surface of the wrapping tape 2 is coated with a vapor phase corrosion inhibitor, or the vapor phase corrosion inhibitor is added into the wrapping tape 2, so that the wrapping tape 2 with the vapor phase corrosion inhibition function is manufactured.
The third embodiment: the plastic sheath 3 is provided with a vapor phase corrosion inhibitor, and the plastic sheath 3 is at least two layers. The concrete implementation is as follows: adding a vapor phase corrosion inhibitor into the plastic, and performing hot extrusion on the whole cable strand on an extruder to form the plastic sheath 3 to prepare the plastic sheath 3 with the vapor phase corrosion inhibition function.
A section of plastic sheath 3 and a section of wrapping tape 2 with proper length are stripped at two ends of the cable body 100, so that the steel wire 1 is exposed and is used for assembling with the anchorage device.
The fourth embodiment: a vapor-phase corrosion inhibition belt is wound on the outer surface of the cable strand, and the vapor-phase corrosion inhibition belt is made of a vapor-phase corrosion inhibitor and a matrix; the wrapping belt 2 wraps the gas-phase corrosion inhibition belt, or the gas-phase corrosion inhibition belt and the wrapping belt 2 are integrally formed.
Fifth embodiment: the vapor phase inhibitor or the carrier thereof is added into the plastic, and a plastic extruder is adopted to extrude the plastic into the plastic sheath 3.
Sixth embodiment: the vapor phase corrosion inhibitor is mixed into the plastic master batch according to the requirement of corrosion prevention life in different proportions, and the plastic master batch mixed with the vapor phase rust inhibitor is used as a raw material to carry out hot extrusion on the whole cable strand on a plastic extruder to form the plastic sheath 3.
As shown in fig. 4, the utility model discloses a parallel steel wire cable 200 of vapor phase inhibition, include the cable body 100, ground tackle, the ground tackle is two, and two ground tackle are installed respectively the cable body 100 both ends, the ground tackle includes anchor cup 11, a sealing cylinder 13, an extension section of thick bamboo 14, divides the filament plate, sealing device 15, the inside steel wire 1 of anchor cup 11 is through pouring into filler 16 with steel wire 1 and divide the filament plate anchor on anchor cup 11, anchor cup 11 with a sealing cylinder 13 links to each other, an extension section of thick bamboo 14 is sealed through sealing device 15 with plastic sheath 3, anchor cup 11 a sealing cylinder 13 with an extension section of thick bamboo 14 forms airtight space, airtight space intussuseption is filled with vapor phase corrosion inhibitor or vapor phase corrosion inhibitor carrier. The whole section of the steel wire 1 is sealed in a sealed space formed by an anchor 11 cup, a sealing cylinder 13, an extension cylinder 14 and a plastic sheath 3, and the gas phase corrosion inhibitor fills the sealed space through molecular motion, so that the all-round long-acting corrosion prevention of the whole section of the steel wire 1 is achieved.
The anchor cup 11 is connected and sealed with the sealing cylinder 13 through threads, and the extension cylinder 14 is connected and sealed with the sealing cylinder 13 through threads.
The anchor cup 11 is also provided with a nut 12.
The carrier of the vapor phase corrosion inhibitor comprises a matrix and the vapor phase corrosion inhibitor compounded with the matrix, wherein the matrix can be paper, plastics, rubber, polyurethane, cloth, hemp, wax, mineral oil, grease, water, chemical solvent and other materials. The vapor phase inhibitor is compounded with matrix through physical or chemical process including pressing, mixing, pelletizing, extruding, stretching, coupling, dissolving and other steps to produce product containing vapor phase inhibitor.
The above embodiment is implemented in a factory, in order to exert a more comprehensive and longer protection effect on the guy cable and make up for the corrosion prevention defect caused by the installation and construction of the solid bridge, as shown in fig. 5, the following construction can be carried out on the engineering site for supplement:
after the anchorage device is installed, before the waterproof cover 17 is installed, whether water is accumulated in the embedded conduit 18 or not is checked, drying treatment is carried out after water is drained, a vapor phase corrosion inhibitor or a carrier thereof is added after drying is finished, a shock absorber 19 is installed, a conduit sealing device 20 is installed at a space gap between the end part of the embedded conduit 18 and the cable body 100, and the waterproof cover 17 is installed.
After the end part of the anchor cup 11 is tensioned, the vapor phase corrosion inhibitor or the carrier thereof is applied to the anchor cup 11 in the end cover and the exposed anchor head, and then the protective cover 21 is installed for sealing. After the completion, the anchorage device, the pre-buried guide pipe 18 and the guide pipe sealing device 20 form a closed space, and the vapor phase corrosion inhibitor fills the closed space through molecular motion, so that the long-acting corrosion prevention of the cable body anchorage device is achieved.
After the bridge is operated, the anchorage device is inevitably corroded, the waterproof cover 17 is opened during maintenance, whether water is accumulated in the embedded conduit 18 or not is checked, drying treatment is carried out after water is drained, a vapor phase corrosion inhibitor or a carrier thereof is added after drying is finished, the waterproof cover 17 is installed, and the vapor phase corrosion inhibitor or the carrier thereof is replaced if necessary.
Opening the protective cover 21, draining water if accumulated water exists, drying, opening the end cover of the anchor cup 11, applying vapor phase corrosion inhibitor or carrier thereof to the anchor cup 11 in the end cover and the exposed anchor head, replacing the sealing element if necessary, and then recovering the original package. And finishing the corrosion maintenance of the anchorage device. If necessary, the vapor phase inhibitor or the carrier thereof is replaced.
The utility model discloses a parallel steel wire cable of gaseous phase inhibition can be used to among projects such as high tower suspension cable, arch bridge jib cable, suspension bridge hoist cable (jib), is not limited to concrete structure, also can be used to the steel structure.
The utility model has the advantages that: 1. the corrosion prevention mechanism is clear, the technology is mature, and the measures are simple; 2. the steel wire damage and the corrosion prevention defect caused by wet air in the steel wire in the cable manufacturing process are automatically compensated; 3. the corrosion condition which is inevitable due to the characteristics of the structure is improved, and the full-section omnibearing corrosion prevention can be achieved; 4. the corrosion resistance and durability of the stay cable body are prolonged by a corrosion resistance technology on the basis of the existing stay cable body corrosion resistance technology; 5, the investment cost is low, and the social and economic benefits are high.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (10)
1. A cable body, characterized in that: the cable comprises steel wires (1), a band (2) and a plastic sheath (3), wherein a plurality of steel wires (1) are combined and braided in a certain arrangement to form a cable strand, the band (2) is wound on the outer surface of the cable strand, the plastic sheath (3) is sleeved on the outer surface of the band (2), the steel wires (1) at two ends are exposed outside, and a gas phase corrosion inhibitor is added into a cable body.
2. The cable as claimed in claim 1, wherein: the surface of the steel wire (1) is coated with a vapor phase corrosion inhibitor and/or the surface of the strand is coated with a vapor phase corrosion inhibitor.
3. The cable as claimed in claim 1, wherein: the surface of the belting (2) is coated with a vapor phase inhibitor, or the vapor phase inhibitor is added into the belting (2), so that the belting (2) with the vapor phase corrosion inhibition function is manufactured.
4. The cable as claimed in claim 1, wherein: the plastic sheath (3) is provided with a vapor phase corrosion inhibitor, and the plastic sheath (3) is at least two layers.
5. The cable as claimed in claim 1, wherein: a vapor-phase corrosion inhibition belt is wound on the outer surface of the cable strand, and the vapor-phase corrosion inhibition belt is made of a vapor-phase corrosion inhibitor and a matrix; the wrapping belt (2) wraps the gas-phase corrosion inhibition belt, or the gas-phase corrosion inhibition belt and the wrapping belt (2) are integrally formed.
6. A vapor phase corrosion inhibition parallel steel wire inhaul cable, characterized by comprising the cable body and two anchors according to any one of claims 1 to 5, wherein the two anchors are respectively arranged at two ends of the cable body (100), the anchors comprise anchor cups (11), sealing cylinders (13), extension cylinders (14), wire dividing plates and sealing devices (15), the steel wires (1) in the anchor cups (11) are anchored on the anchor cups (11) through filling fillers (16), the anchor cups (11) are connected with the sealing cylinders (13), the extension cylinders (14) are sealed with plastic sheaths (3) through the sealing devices (15), the anchor cups (11), the sealing cylinders (13) and the extension cylinders (14) form closed spaces, and vapor phase corrosion inhibitors or vapor phase corrosion inhibitor carriers are filled in the closed spaces.
7. The vapor-phase corrosion-inhibition parallel wire inhaul cable according to claim 6, wherein the anchor cup (11) is connected and sealed with the sealing cylinder (13) through threads, and the extension cylinder (14) is connected and sealed with the sealing cylinder (13) through threads.
8. The vapor-phase corrosion-inhibition parallel steel wire inhaul cable according to claim 6, wherein the vapor-phase corrosion inhibitor carrier is made of a matrix and a vapor-phase corrosion inhibitor compounded with the matrix.
9. A device, characterized in that, the device includes the parallel steel wire cable of vapor phase inhibition of any one of claims 6 to 8, a waterproof cover (17), an embedded conduit (18), a shock absorber (19), a conduit sealing device (20), the parallel steel wire cable of vapor phase inhibition stretches into the embedded conduit (18), the shock absorber (19) is installed between the embedded conduit (18) and the parallel steel wire cable of vapor phase inhibition (200), the waterproof cover (17) is installed at the end of the embedded conduit (18) and outside the parallel steel wire cable of vapor phase inhibition, the conduit sealing device (20) is installed at the position of the space gap between the end of the embedded conduit (18) and the parallel steel wire cable of vapor phase inhibition, and the embedded conduit (18) is filled with a vapor phase corrosion inhibitor or a carrier of vapor phase corrosion inhibitor.
10. The device according to claim 9, characterized in that the device further comprises a protective cover (21), the protective cover (21) is installed at the end of the embedded conduit (18), and the protective cover (21) is filled with the vapor phase corrosion inhibitor or the vapor phase corrosion inhibitor carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121429313.0U CN218291597U (en) | 2021-06-25 | 2021-06-25 | Cable body, gaseous phase inhibition parallel steel wire inhaul cable and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121429313.0U CN218291597U (en) | 2021-06-25 | 2021-06-25 | Cable body, gaseous phase inhibition parallel steel wire inhaul cable and device |
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| Publication Number | Publication Date |
|---|---|
| CN218291597U true CN218291597U (en) | 2023-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121429313.0U Active CN218291597U (en) | 2021-06-25 | 2021-06-25 | Cable body, gaseous phase inhibition parallel steel wire inhaul cable and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218291597U (en) |
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2021
- 2021-06-25 CN CN202121429313.0U patent/CN218291597U/en active Active
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