CN113802457B - Multifunctional outer protection system for bridge steel cable - Google Patents
Multifunctional outer protection system for bridge steel cable Download PDFInfo
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- CN113802457B CN113802457B CN202111161117.4A CN202111161117A CN113802457B CN 113802457 B CN113802457 B CN 113802457B CN 202111161117 A CN202111161117 A CN 202111161117A CN 113802457 B CN113802457 B CN 113802457B
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- 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
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a multifunctional outer layer protection system for a bridge steel cable, which comprises a stay cable and a protection fireproof layer on the outer side of the stay cable; the number of the hoops is multiple, and the hoops are fastened on the outer side of the protective fireproof layer at uniform intervals along the length direction of the inhaul cable; the hoop is provided with a plurality of air blowholes which are axially communicated; two outer side walls of the hoop are radially provided with clamping grooves which are communicated with the air blowby holes; the outer protective sleeve comprises two semicylindrical tubes which are detachably connected; the side wall of the semi-cylindrical pipe is provided with an axially-through air inlet channel; a socket positioned in the air inlet channel is formed at the bottom end of the air inlet channel, and a plug which protrudes out of the top edge of the semi-cylindrical pipe and can be matched with the socket is arranged at the top end of the air inlet channel; the inner side wall of the semi-cylindrical pipe is provided with a clamping pipe clamped with the clamping groove, and the clamping pipe is communicated with the air inlet channel and the air blowby hole; the humidity detection system comprises a plurality of humidity sensing probes uniformly arranged inside and on the outer surface of the protective fireproof layer and an electronic humidity meter electrically connected with the humidity sensing probes; the electronic hygrometer is fixed on the top end of the outer protective sleeve.
Description
Technical Field
The invention relates to the technical field of cable-stayed bridge cable fire prevention, fire control, dehumidification and corrosion prevention, in particular to a multifunctional outer layer protection system for a bridge cable, which has multiple functions of fire prevention, explosion prevention, humidity detection, moisture prevention and the like.
Background
In order to improve the fireproof performance of the cable-stayed bridge cable, in the prior art, the surface of the cable is firstly wound with a fireproof layer, basalt fiber cloth strips with the thickness of 3-5 mm are spirally wound on the surface of the cable, then a sealing layer is bonded on the outer layer of the fireproof layer formed by winding, and the sealing layer is directly wrapped on site by basalt mesh cloth through a four-glue three-cloth processing technology.
The above structural system enables the hermetic fire-protection treatment of steel cables, but still suffers from the following drawbacks:
1. the stability of the structural system is not easy to guarantee: the spiral structure of the basalt fiber cloth strip is poor in stability, and although the stability can be improved to a certain extent under the gluing effect of the basalt mesh cloth, due to the long-time cold and hot effect, after the bonding surface of the basalt fiber cloth strip and the basalt mesh cloth is corroded, the stability is easily reduced.
2. The sealing layer plays a key guarantee role in the effect of the fireproof layer, and if the sealing layer falls off or is damaged under the action of external force, the fireproof layer can be caused to lose efficacy.
3. Due to damp weather in the system, the sealing layer and the fireproof layer are corroded, and the fireproof effect is influenced for a long time.
Therefore, how to provide a multifunctional outer protection system capable of effectively protecting the bridge steel cable is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a multifunctional outer layer protection system for a bridge steel cable, which aims to solve the above technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a multifunctional outer protection system for a bridge steel cable comprises: the inhaul cable and the protective fireproof layer on the outer side of the inhaul cable; further comprising:
hooping; the number of the hoops is multiple, and the hoops are fastened on the outer side of the protective fireproof layer at uniform intervals along the length direction of the inhaul cable; the hoop is provided with a plurality of air blowby holes which are axially communicated; clamping grooves are radially formed in the two outer side walls of the hoop and are communicated with the air blowby holes;
an outer protective sleeve; the number of the outer protective sleeves is multiple, and the head and the tail of the outer protective sleeves are connected with the outer side of the hoop in a connecting mode; the outer protective sleeve comprises two semicylindrical tubes which are detachably connected; the side wall of the semi-cylindrical pipe is provided with an axially-through air inlet channel; a socket positioned in the air inlet channel is formed at the bottom end of the air inlet channel, and a plug which protrudes out of the top edge of the semi-cylindrical pipe and can be matched with the socket is arranged at the top end of the air inlet channel; the inner side wall of the semi-cylindrical pipe is provided with a clamping pipe clamped with the clamping groove, and the clamping pipe is communicated with the air inlet channel and the air blowby hole;
a humidity detection system; the humidity detection system comprises a plurality of humidity sensing probes uniformly arranged inside and on the outer surface of the protective fireproof layer and an electronic humidity meter electrically connected with the humidity sensing probes; the electronic hygrometer is fixed at the top end of the outer protective sleeve.
Through the technical scheme, the hoop and the outer protective sleeve are matched, so that the structural stability is achieved through the hoop, the anti-collision and anti-riot effects are achieved through the semi-cylindrical pipe, and the blow-by and dehumidification effects are achieved through the cooperation of the hoop and the semi-cylindrical pipe and the combination of a humidity detection system.
Preferably, in the multifunctional outer layer protection system for the bridge steel cable, the protective fireproof layer comprises an inner fireproof layer and an outer fireproof layer; the inner fireproof layer is an aerogel fiber cloth strip spirally wound on the outer side of the inhaul cable; the outer fireproof layer is a ceramic fiber sleeve which is bonded and fixed in a multi-layer mode. The use of aerogel fiber and ceramic fiber materials can further improve the fireproof and protective effects, but the moisture-proof and moisture-proof effects of the aerogel fiber and ceramic fiber materials are reduced due to the materials and the composition structure, so that the aerogel fiber and ceramic fiber materials can be used together with the humidity monitoring and dehumidifying system disclosed by the invention, and the performances of the aerogel fiber and ceramic fiber materials can achieve an excellent balance effect.
Preferably, in the multifunctional outer protection system for the bridge steel cable, the humidity sensing probes are divided into two groups, one group is fixedly bonded between the inner fire-proof layer and the outer fire-proof layer, and the other group is fixedly bonded outside the outer fire-proof layer. The humidity condition in the protective fireproof layer can be effectively collected.
Preferably, in the multifunctional outer-layer protection system for the bridge steel cable, the hoop comprises two semi-circular ring bodies; one ends of the two semi-circular ring bodies are hinged, and the other ends of the two semi-circular ring bodies are connected through a first bolt; the outer side wall of one of the semi-circular ring bodies is provided with a first blind hole used for hiding the first bolt. The installation of being convenient for, and can hide the connecting piece after connecting.
Preferably, in the multifunctional outer protection system for the bridge steel cable, the inner side walls of the two semi-circular ring bodies are nested with the cushion rubber pads. Improve the effect of hugging closely of staple bolt, and can prevent the damage to the protection flame retardant coating.
Preferably, in the multifunctional bridge steel cable outer-layer protection system, the edges of the two semi-cylindrical pipes are connected through a plurality of second bolts; the outer side wall of one of the semi-cylindrical pipes is provided with a second blind hole for hiding the second bolt; the edges of the upper outer protective sleeve and the lower outer protective sleeve are connected through a plurality of third bolts; the outer side wall of one of the outer protective sleeves is provided with a third blind hole for hiding the third bolt. The installation of being convenient for, and can hide the connecting piece after connecting.
Preferably, in the multifunctional outer-layer protection system for the bridge steel cable, a rubber sealing strip is fixedly embedded between the butt joint edges of the two semi-cylindrical pipes; and a rubber sealing ring is fixedly embedded between the butt joint edges of the two outer protective sleeves. The sealing performance of the connection can be effectively improved.
Preferably, in the multifunctional outer layer protection system for bridge steel cables, the top end of the cylindrical structure formed by the plurality of outer protection sleeves is provided with a sealed top cover, and the bottom end of the cylindrical structure is provided with a sealed bottom cover; quick connectors are mounted on the inserting holes of the two semi-cylindrical pipes at the bottommost ends; the bottom cover is provided with an air outlet valve. The connection of the pipelines can be realized rapidly, and the ventilation and the blow-by gas treatment are carried out.
Preferably, in the multifunctional outer protection system for the bridge steel cable, a protection cover is arranged outside the electronic moisture meter; and the electronic hygrometer realizes signal transmission with a ground monitoring system through a wireless network. Can play the guard action to the electron hygrometer.
Preferably, in the multifunctional outer protection system for the bridge steel cable, an impact-resistant foam block is filled in a gap between the outer protection sleeve and the protection fireproof layer. The impact resistance effect can be further improved.
According to the technical scheme, compared with the prior art, the invention discloses a multifunctional outer layer protection system for a bridge steel cable, which has the following beneficial effects:
1. the invention adopts the matching structure of the hoop and the outer protective sleeve, firstly, the hoop plays a role in structural stability, secondly, the semi-cylindrical pipe plays a role in collision prevention and explosion prevention, and thirdly, the hoop and the semi-cylindrical pipe are matched with each other and are combined with a humidity detection system to realize the effects of air channeling and dehumidification.
2. The aerogel fiber and ceramic fiber material can further improve the fireproof and protective effects, but the moisture-proof and moisture-proof effects are reduced due to the materials and the composition structure, so that the performance of the aerogel fiber and ceramic fiber material can achieve an excellent balance effect when the aerogel fiber and ceramic fiber material is used together with the humidity monitoring and dehumidifying system.
3. According to the invention, the ordered humidity detection system is arranged in the protective fireproof layer, so that the humidity can be monitored in real time, and the dehumidification treatment can be carried out according to the requirement.
4. The invention has the advantages of fire prevention, explosion prevention, humidity detection, moisture prevention, structural stability improvement and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a sectional view of a multifunctional outer layer protection system for a bridge steel cable according to the present invention;
FIG. 2 is a schematic view of a structure of the hoop and the outer protective sleeve provided by the present invention;
FIG. 3 is a cross-sectional view of the hoop and the outer protective sleeve provided by the invention;
FIG. 4 is a schematic structural diagram of a hoop according to the present invention;
FIG. 5 is a radial cross-sectional view of the anchor ear provided by the present invention;
FIG. 6 is a radial cross-sectional view of an outer shield according to the present invention;
figure 7 is an axial cross-sectional view of the outer shield provided by the present invention.
Wherein:
1-a guy cable;
2-protective fire-proof layer;
21-inner fire-proof layer; 22-outer fire barrier;
3-hoop holding;
31-blow-by holes; 32-card slot; 33-a semi-torus; 331-first blind hole; 34-a first bolt; 35-cushion rubber pad;
4-outer protective sleeve;
41-a semi-cylindrical tube; 411-an intake passage; 412-a socket; 413-a plug; 414-clamp tube; 415-a second blind hole; 416-third blind hole; 42-a second bolt; 43-third bolt; 44-a top cover; 45-bottom cover; 46-a quick coupling; 47-gas outlet valve;
5-a humidity detection system;
51-humidity sensing probe; 52-electronic moisture meter; 53-protective covers;
6-impact resistant foam block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings, the embodiment of the invention discloses a multifunctional outer layer protection system for a bridge steel cable, which comprises: a guy cable 1 and a protective fireproof layer 2 at the outer side of the guy cable; further comprising:
a hoop 3; the number of the hoops 3 is multiple, and the hoops are fastened on the outer side of the protective fireproof layer 2 at uniform intervals along the length direction of the inhaul cable 1; the hoop 3 is provided with a plurality of air blowby holes 31 which are axially communicated; two outer side walls of the hoop 3 are radially provided with clamping grooves 32, and the clamping grooves 32 are communicated with the air blowby holes 31;
an outer protective cover 4; the number of the outer protective sleeves 4 is multiple, and the head and the tail of the outer protective sleeves are connected with the outer side of the hoop 3 in a connecting way; the outer protective sheath 4 comprises two detachably connected semi-cylindrical tubes 41; the side wall of the semicylindrical tube 41 is provided with an axially-through air inlet passage 411; a socket 412 positioned in the air inlet passage 411 is formed at the bottom end of the air inlet passage 411, and a plug 413 which protrudes out of the top edge of the semi-cylindrical pipe 41 and can be matched with the socket 412 is arranged at the top end of the air inlet passage 411; the inner side wall of the semi-cylindrical pipe 41 is provided with a clamping pipe 414 clamped with the clamping groove 32, and the clamping pipe 414 is communicated with the air inlet passage 411 and the air blowby hole 31;
a humidity detection system 5; the humidity detection system 5 comprises a plurality of humidity sensing probes 51 uniformly arranged inside and outside the protective fireproof layer 2, and an electronic humidity meter 52 electrically connected with the humidity sensing probes 51; an electronic moisture meter 52 is fixed to the top end of the outer protective sheath 4.
In order to further optimize the above technical solution, the protective fire-proof layer 2 comprises an inner fire-proof layer 21 and an outer fire-proof layer 22; the inner fireproof layer 21 is an aerogel fiber cloth strip spirally wound on the outer side of the stay rope 1; the outer fire-proof layer 22 is a ceramic fiber sleeve sleeved outside the aerogel fiber cloth strip.
In order to further optimize the above technical solution, the humidity sensing probes 51 are divided into two groups, one group is fixed between the inner flame-proof layer 21 and the outer flame-proof layer 22 by bonding, and the other group is fixed outside the outer flame-proof layer 22 by bonding.
In order to further optimize the technical scheme, the hoop 3 comprises two semi-circular ring bodies 33; one ends of the two semi-circular rings 33 are hinged, and the other ends are connected through a first bolt 34; the outer side wall of one of the semi-circular rings 33 has a first blind hole 331 for hiding the first bolt 34.
In order to further optimize the technical scheme, the inner side walls of the two semi-circular rings 33 are nested with cushion rubber pads 35.
In order to further optimize the above technical solution, the edges of the two semicylindrical tubes 41 are connected by a plurality of second bolts 42; the outer side wall of one of the semicylindrical tubes 41 has a second blind hole 415 for hiding the second bolt 42; the edges of the upper and lower outer protective sleeves 4 are connected through a plurality of third bolts 43; the outer side wall of one of the outer shield sleeves 4 has a third blind hole 416 for concealing the third bolt 43.
In order to further optimize the technical scheme, a rubber sealing strip is fixedly embedded between the butt joint edges of the two semi-cylindrical pipes 41; a rubber sealing ring is fixedly embedded between the butt joint edges of the two outer protective sleeves 4.
In order to further optimize the above technical solution, the top end of the cylindrical structure formed by the plurality of outer protection sleeves 4 is provided with a sealed top cover 44, and the bottom end is provided with a sealed bottom cover 45; the jacks of the two semi-cylindrical pipes 41 at the bottommost ends are provided with quick connectors 46; the bottom cover 45 has an outlet valve 47.
In order to further optimize the technical scheme, a protective cover 53 is arranged outside the electronic humidity meter 52; the electronic moisture meter 52 realizes signal transmission with the ground monitoring system through a wireless network.
In order to further optimize the technical scheme, a gap between the outer protective sleeve 4 and the protective fireproof layer 2 is filled with an anti-impact foam block 6.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a multi-functional outer protection system of bridge cable wire which characterized in that includes: a guy cable (1) and a protective fireproof layer (2) on the outer side of the guy cable; further comprising:
a hoop (3); the number of the hoops (3) is multiple, and the hoops are fastened on the outer side of the protective fireproof layer (2) at uniform intervals along the length direction of the inhaul cable (1); the hoop (3) is provided with a plurality of axially through air blow-by holes (31); clamping grooves (32) are radially formed in the two outer side walls of the hoop (3), and the clamping grooves (32) are communicated with the air blowby holes (31); the hoop (3) comprises two semi-circular ring bodies (33); one ends of the two semi-circular rings (33) are hinged, and the other ends are connected through a first bolt (34); the outer side wall of one of the semi-circular ring bodies (33) is provided with a first blind hole (331) used for hiding the first bolt (34);
an outer protective jacket (4); the number of the outer protective sleeves (4) is multiple, and the head and the tail of the outer protective sleeves are connected with the outer side of the hoop (3) in a connecting mode; the outer protective sleeve (4) comprises two semi-cylindrical pipes (41) which are detachably connected; the side wall of the semi-cylindrical pipe (41) is provided with an axially-through air inlet channel (411); a socket (412) positioned in the air inlet channel (411) is formed at the bottom end of the air inlet channel (411), and a plug (413) which protrudes out of the top edge of the semi-cylindrical pipe (41) and can be matched with the socket (412) is arranged at the top end of the air inlet channel (411); the inner side wall of the semi-cylindrical pipe (41) is provided with a clamping pipe (414) clamped with the clamping groove (32), and the clamping pipe (414) is communicated with the air inlet channel (411) and the air blowby hole (31); the edges of the two semi-cylindrical pipes (41) are connected through a plurality of second bolts (42); the outer side wall of one of the semi-cylindrical pipes (41) is provided with a second blind hole (415) used for hiding the second bolt (42); the edges of the upper outer protecting sleeve and the lower outer protecting sleeve (4) are connected through a plurality of third bolts (43); the outer side wall of one of the outer protective sleeves (4) is provided with a third blind hole (416) for hiding the third bolt (43);
a humidity detection system (5); the humidity detection system (5) comprises a plurality of humidity sensing probes (51) uniformly arranged inside and on the outer surface of the protective fireproof layer (2), and an electronic humidity meter (52) electrically connected with the humidity sensing probes (51); the electronic hygrometer (52) is fixed at the top end of the outer protective sleeve (4).
2. The multifunctional outer protection system for the bridge steel cable according to claim 1, wherein the protective fire-proof layer (2) comprises an inner fire-proof layer (21) and an outer fire-proof layer (22); the inner fireproof layer (21) is an aerogel fiber cloth strip spirally wound on the outer side of the inhaul cable (1); the outer fireproof layer (22) is a multi-layer ceramic fiber sleeve which is fixedly bonded.
3. The multifunctional outer protection system for the bridge steel cable according to claim 2, wherein the humidity sensing probes (51) are divided into two groups, one group is fixed between the inner fire-proof layer (21) and the outer fire-proof layer (22) in an adhesion manner, and the other group is fixed on the outer side of the outer fire-proof layer (22) in an adhesion manner.
4. The multifunctional outer protection system for the bridge steel cable according to claim 1, wherein the inner side walls of the two semi-circular rings (33) are nested with rubber cushions (35).
5. The multifunctional outer-layer protection system for the bridge steel cable according to claim 1, wherein a rubber sealing strip is fixedly embedded between the butt joint edges of the two semi-cylindrical pipes (41); and a rubber sealing ring is fixedly embedded between the butt joint edges of the two outer protective sleeves (4).
6. The multifunctional outer protection system for bridge steel cables as claimed in claim 5, wherein the top end of the tubular structure formed by a plurality of said outer protection sleeves (4) has a sealed top cover (44), and the bottom end has a sealed bottom cover (45); quick joints (46) are arranged on the inserting holes of the two bottommost semi-cylindrical pipes (41); the bottom cover (45) is provided with an air outlet valve (47).
7. The multifunctional outer protection system for the bridge steel cable according to claim 1, wherein the electronic moisture meter (52) is provided with a protective cover (53) at the outer side; the electronic humidity meter (52) realizes signal transmission with a ground monitoring system through a wireless network.
8. The multifunctional outer protection system for bridge steel cables according to any one of claims 1 to 7, wherein a gap between the outer protection sleeve (4) and the protection and fire prevention layer (2) is filled with an impact-resistant foam block (6).
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CN113802457B true CN113802457B (en) | 2023-03-28 |
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Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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AU2002952900A0 (en) * | 2002-11-25 | 2002-12-12 | Vsl Prestressing (Aust) Pty Ltd | Protective device |
CN104846743B (en) * | 2015-04-30 | 2016-08-24 | 合肥工业大学 | A kind of fireproof for bridge cable protection |
CN110080105A (en) * | 2019-04-04 | 2019-08-02 | 深圳大学 | Combined vibration-damping sheath drag-line |
CN110396928A (en) * | 2019-07-16 | 2019-11-01 | 深圳市科兰德实业发展有限公司 | Suspension cable |
CN111505056A (en) * | 2020-04-17 | 2020-08-07 | 江苏中矿大正表面工程技术有限公司 | All-weather online monitoring system and method for bridge cable corrosion |
CN111648242A (en) * | 2020-04-29 | 2020-09-11 | 上海浦江缆索股份有限公司 | A dehumidification system that is used for cable protection to go up anchor and admits air |
CN212426755U (en) * | 2020-05-05 | 2021-01-29 | 广州珠江黄埔大桥建设有限公司 | Bridge cable protection combination sheath |
CN112095467A (en) * | 2020-08-12 | 2020-12-18 | 上海浦江缆索股份有限公司 | Inhaul cable body with fireproof shell and manufacturing method thereof |
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