WO2020191984A1 - Système de câble en fils d'acier parallèles recouvert en polyéthylène extrudé à chaud anti-givrage et dégivrage et son procédé de préparation - Google Patents

Système de câble en fils d'acier parallèles recouvert en polyéthylène extrudé à chaud anti-givrage et dégivrage et son procédé de préparation Download PDF

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Publication number
WO2020191984A1
WO2020191984A1 PCT/CN2019/099760 CN2019099760W WO2020191984A1 WO 2020191984 A1 WO2020191984 A1 WO 2020191984A1 CN 2019099760 W CN2019099760 W CN 2019099760W WO 2020191984 A1 WO2020191984 A1 WO 2020191984A1
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WO
WIPO (PCT)
Prior art keywords
wire
cable
heating
icing
heating wire
Prior art date
Application number
PCT/CN2019/099760
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English (en)
Chinese (zh)
Inventor
强强
薛花娟
赵军
Original Assignee
江苏法尔胜路桥科技有限公司
江苏法尔胜缆索有限公司
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 江苏法尔胜路桥科技有限公司, 江苏法尔胜缆索有限公司 filed Critical 江苏法尔胜路桥科技有限公司
Publication of WO2020191984A1 publication Critical patent/WO2020191984A1/fr

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    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/147—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising electric conductors or elements for information transfer
    • 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
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2401/00—Aspects related to the problem to be solved or advantage
    • D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/202—Environmental resistance
    • D07B2401/203—Low temperature resistance
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2015—Construction industries
    • D07B2501/203—Bridges

Definitions

  • the invention relates to a cable-stayed bridge structure, in particular to a parallel steel wire cable system that can be energized and heated.
  • the span of the suspension bridge is close to 2,000 meters.
  • the main span of the Great Belt Bridge in Denmark is 1,624 meters
  • the main span of Akashi Kaikyo Bridge in Japan is 1,990 meters.
  • the cable-stayed bridge has a span of more than 1,000 meters.
  • the Japanese Dodola Bridge has a span of 890 meters
  • the Sutong Yangtze River Bridge has a span of 1088 meters
  • the Hutong Yangtze River Bridge has a main span of 1092 meters.
  • the span of the arch bridge also reaches the order of 550 meters.
  • Suspension bridges and cable-stayed bridges transfer loads through a cable system, and half-through and through-type arch bridges also require suspension rods to transfer the main load of the main girder.
  • the safety of the cable bearing system is directly related to the overall safety of the bridge structure. Therefore, ensuring the safety of the cable load-bearing system of long-span cable bridges is a key link in the bridge construction process and is of great significance.
  • the surface is prone to icing, which will cause the center of gravity of the stay cables to deviate from the central axis and become unstable aerodynamic shapes.
  • the frozen ice cubes fall under the action of vibration, which can easily damage pedestrians and cars, and bring safety hazards to the operation of the bridge.
  • the polyethylene sheath of the stay cable is prone to low-temperature embrittlement and cracks in a vibration environment.
  • the present invention has certain positive significance for preventing low-temperature cracking of the high-density polyethylene sheath of the stay cable in the extremely cold environment.
  • the technical problem to be solved by the present invention is to provide a cable system with a heating wire in view of the above-mentioned prior art.
  • the heating wire is connected to electricity to heat the usual cable to produce anti-icing and deicing effects.
  • an anti-icing and deicing hot-extruded polyethylene parallel steel wire cable system which includes a cable, a connecting tube, an anchor cup, a wire dividing plate, and a lock nut.
  • the connecting cylinder is arranged at the front end of the anchor cup, the wire dividing plate is arranged inside the anchor cup, the locking nut is locked on the outer periphery of the anchor cup, and the pull cable includes a bare cable and a sheath covering the outer layer of the bare cable
  • the bare cable is composed of parallel steel wire bundles and a number of heating wires arranged in a full length.
  • the steel wire bundles of the bare cable pass through the connecting cylinder and are anchored in the anchor cup.
  • the ends of the steel wires are fixed on the wire dividing plate.
  • the inner anchor inherently has several hollow threaded pipes.
  • the rear end of the threaded tube passes through the wire dividing plate, and the front end extends forward to the connecting cylinder.
  • the heating wires of the bare cable pass through the threaded tube one by one and are led out from the wire dividing plate.
  • the heating wire can be drawn from the anchor cup, and when the drawn heating wire is connected to the power source, the heating wire generates heat and heats the cable.
  • a temporary wire retaining plate is arranged in the anchor cup, and the wire retaining plate blocks the heating wire passing through the wire dividing plate in the anchor cup to prevent damage to the exposed heating wire caused by the installation operation of the on-site stay cable.
  • a plurality of heating wires are evenly distributed on the outer circumference of the steel wire bundle, and the heating wires and the outer steel wires are located on the same circumference, so that the heating wires are not prone to convex sliding.
  • the advantage of this arrangement is to avoid the heating wire from interfering with the wire bundle and facilitate the replacement of the heating wire and the anchoring operation of the wire bundle.
  • the heating wire includes a power bus bar, an inner insulating sleeve, a heating wire, an outer insulating sleeve, a heat conduction layer, and a heating layer in order from the inside out.
  • the heating wire is wound on the inner insulating sleeve in a long way, and the heating wire is connected to the power supply.
  • the bus bars are connected at intervals to form a continuous and parallel energized heating section.
  • the power bus can be two or three parallel insulated copper stranded wires to adapt to different power sockets. After the bus is energized, each parallel resistance heats up to form a continuous heating wire.
  • the bare cable is wrapped around the wrapping tape, the sheath is arranged on the outer layer of the wrapping tape, and the sheath is a single-layer or multi-layer heat-extruded polyethylene layer.
  • Another object of the present invention is to provide a method for preparing the above-mentioned anti-icing and deicing hot-extruded polyethylene parallel steel wire cable system.
  • the main steps are as follows
  • an outer temperature sensor is provided on the sheath of the cable, and an inner temperature sensor is provided on the surface of the bare cable to separately monitor the temperature of the surface of the cable and the surface of the bare cable to prevent excessive heating.
  • an explosion-proof thermostat is installed at the power supply end to avoid fire.
  • the piercing tube is a hollow stainless steel tube, the wall thickness of the piercing tube is 0.2-0.5mm, the length of the threading plate exposed through the tube is 2 ⁇ 1cm, and the length of the exposed connecting cylinder is 5 ⁇ 1cm, which is beneficial for adding The threading operation of the hot wire can effectively prevent the heating wire from spreading.
  • the heating wire reserved at both ends of the bare cable is wound with a wrapping tape so as not to be exposed to protect the heating wire.
  • the present invention has the advantage of providing an anti-icing and deicing hot-extruded polyethylene parallel steel wire cable system.
  • the heating wire is arranged on the periphery of the parallel steel wire bundle, and the cable is energized. Heating can prevent icing and deicing.
  • Figure 1 is a schematic structural diagram of a cable system according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of the structure of the cable system of the embodiment of the present invention after being installed as a stay cable;
  • Figure 3 is a schematic diagram of the structure of a dual-core heating wire in an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the structure of a three-core heating wire in an embodiment of the present invention.
  • Figure 5 is a cross-sectional view of the bare cable of 3 heating wires
  • Figure 6 is a cross-sectional view of the bare cable of 6 heating wires
  • Figure 7 is a cross-sectional view of the bare cable of 12 heating wires
  • Figure 8 is a schematic diagram of the structure before the cable body is anchored
  • Figure 9 is a schematic diagram of the structure of the anchor cup before anchoring
  • Figure 10 is a schematic diagram of the structure of the anchor cup after grouting
  • Figure 11 is a schematic diagram of the side of the wire dividing plate after anchoring
  • Figure 12 is a structural schematic diagram of installing the wire retaining plate in the anchor cup before tensioning
  • Figure 13 is a schematic diagram of the structure of the heating wire leading to electricity after the stay cable is erected.
  • this embodiment relates to an anti-icing and deicing hot-extruded polyethylene parallel steel wire cable system, including a cable, a connecting tube 2, an anchor cup 1, a wire dividing plate 7, and a lock nut 8.
  • the connecting cylinder 3 is arranged at the front end of the anchor cup 1, the connecting cylinder and the cable surface are connected by a guard ring sealingly, the wire dividing plate 7 is arranged inside the anchor cup 1, and the locking nut 8 is locked on the outer periphery of the anchor cup 1.
  • the cable includes bare Cable, a single-layer or double-layer polyethylene sheath 9 covered on the outer layer of the bare cable.
  • the bare cable is then composed of parallel steel wire bundles 5 and a number of heating wires 4 arranged in a full length.
  • the heating wires are evenly distributed on the outer circumference of the steel wire bundle.
  • the heating wire and the outer steel wire are located on the same circumference, and the outer circumference of the bare cable is wrapped with 12 tapes to shape.
  • the heating wire is installed when the steel wire is placed.
  • 3/6/12 heating wires are evenly arranged in the circumferential direction of the outer coil of the wire bundle, which depends on the cable specification, see Figure 5-7.
  • the wire bundle of the bare cable passes through the connecting cylinder 2 and is anchored in the anchor cup 1.
  • the end of the wire is fixed on the wire dividing plate after the pier.
  • the wire bundle in the anchor cup is in a conical shape, and the anchor cup 1 is anchored
  • the heating wires of the bare cable pass through the threaded tube 3 one by one from the front to the back and from the wire dividing plate 7. Lead out, temporarily install a wire retaining plate 6 in the anchor cup 1 before installing the stay cable.
  • the wire retaining plate 6 hides the heating wire that extends beyond the wire splitting plate in the anchor cup 1 so that it is not exposed and damaged. After the stay cable is installed on site, remove the wire retaining plate 6 and lead the heating wire 4 out of the anchor cup 1. When the lead wire is connected to the power supply, the heating wire can generate heat and heat the cable as a whole.
  • Hollow stainless steel pipe is selected for the above-mentioned piercing tube 3, the wall thickness of the piercing tube is 0.2-0.5mm, the length of the threading plate exposed through the tube is 2 ⁇ 1cm, and the length of the exposed connecting cylinder is 5 ⁇ 1cm.
  • the heating wire includes the power bus bar (including the power core wire 401 and the core wire insulation layer 401'), the inner insulating sleeve 402, the heating wire 403, the outer insulating sleeve 404, the thermal conductive layer (braided layer) 405 and the heating layer 406 in turn from the inside out.
  • the heating wire 403 is wound on the inner insulating sleeve 402 in a full length, and the heating wire 403 is connected with the power bus 401 at intervals to form a continuous and parallel energized heating section.
  • the power cord can be two-core or three-core.
  • the heating wire can be arbitrarily cut to length according to actual needs on site, and the braided layer 405 plays a role of heat conduction, and helps to improve the strength of the heating wire, and can also be used as a safety ground wire.
  • this example is to disclose the preparation method of the cable system in Example 1. Taking the cable with 6 heating wires as an example, the steps are as follows
  • the cross section of the wire bundle is a regular hexagon.
  • a heating wire is set on the outer layer of the wire bundle.
  • the six heating wires are evenly arranged on the outer ring of the wire bundle, and the heating wire is set At the time, the heating wire and the outer steel wire should be arranged side by side and closely arranged with the steel wire, and sufficient length should be reserved at both ends of the heating wire;
  • the wire stopper isolates the reserved heating wire within the tension thread on the anchor cup to prevent damage to the heating wire during tension;
  • the present invention also includes other implementation modes, and all technical solutions formed by equivalent transformations or equivalent substitutions shall fall within the protection scope of the claims of the present invention.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ropes Or Cables (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

La présente invention concerne un système de câble en fils d'acier parallèles recouvert en polyéthylène extrudé à chaud, anti-givrage et dégivrage comprenant un câble, des cylindres (2) de liaison, des coupelles (1) d'ancrage, des plaques (7) de séparation de fils et des écrous (8) de verrouillage, les cylindres (2) de liaison étant disposés aux extrémités avant des coupelles (1) d'ancrage, les plaques (7) de séparation de fils étant disposées à l'intérieur des coupelles (1) d'ancrage, et les écrous (8) de verrouillage étant verrouillés sur la périphérie externe des coupelles (1) d'ancrage. Le câble comprend un câble nu et une gaine (9) enveloppant la couche externe du câble nu, le câble nu étant en outre composé de faisceaux (5) de fils d'acier parallèles et plusieurs fils (4) chauffants pleine longueur, et les faisceaux (5) de fils d'acier du câble nu passent à travers les cylindres (2) de liaison et sont ancrés à l'intérieur des coupelles (1) d'ancrage. Les extrémités des fils d'acier sont fixées sur les plaques (7) de séparation de fils, plusieurs tuyaux (3) de pénétration creux sont ancrés à l'intérieur des coupelles (1) d'ancrage, les extrémités arrière des tuyaux (3) de pénétration passent à travers les plaques (7) de séparation de fils, les extrémités avant des tuyaux de pénétration s'étendent vers l'avant des cylindres (2) de liaison, les fils (4) chauffants du câble nu passent à travers les tuyaux (3) de pénétration dans une correspondance biunivoque et sont extraits des plaques (7) de séparation de fils, les fils (4) chauffants peuvent être extraits des coupelles (1) d'ancrage, et lorsque les fils (4) chauffants étirés sont connectés à une source d'alimentation, ces derniers chauffent le câble. Les fils chauffants (4) sont disposés sur la périphérie extérieure des faisceaux de fils d'acier parallèles (5) pour chauffer le câble lorsqu'il est connecté à une source d'alimentation, ce qui permet d'obtenir des effets anti-givrage et de dégivrage.
PCT/CN2019/099760 2019-03-26 2019-08-08 Système de câble en fils d'acier parallèles recouvert en polyéthylène extrudé à chaud anti-givrage et dégivrage et son procédé de préparation WO2020191984A1 (fr)

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CN201910231040.XA CN110004828A (zh) 2019-03-26 2019-03-26 一种防结冰、除冰的热挤聚乙烯平行钢丝拉索体系及其制备方法
CN201910231040.X 2019-03-26

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113587838A (zh) * 2021-08-06 2021-11-02 重庆万桥交通科技发展有限公司 缆索预热装置及裸光纤光栅传感器的封装方法
CN114775430A (zh) * 2022-04-13 2022-07-22 江阴法尔胜住电新材料有限公司 一种具有分层分丝支撑结构的钢绞线系杆索体系及安装方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110004828A (zh) * 2019-03-26 2019-07-12 江苏法尔胜缆索有限公司 一种防结冰、除冰的热挤聚乙烯平行钢丝拉索体系及其制备方法
CN110747740B (zh) * 2019-10-23 2021-02-02 三峡大学 一种斜拉索智能防冰除冰系统及应用方法

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CN208023412U (zh) * 2018-03-21 2018-10-30 中铁大桥科学研究院有限公司 一种具有防凝冰结构的桥梁拉索
WO2018196966A1 (fr) * 2017-04-26 2018-11-01 Vsl International Ag Tuyau multicouche pour câble structural
CN208280016U (zh) * 2018-05-11 2018-12-25 湖北工业大学 一种斜拉索除冰装置
CN110004828A (zh) * 2019-03-26 2019-07-12 江苏法尔胜缆索有限公司 一种防结冰、除冰的热挤聚乙烯平行钢丝拉索体系及其制备方法

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JP2006322177A (ja) * 2005-05-18 2006-11-30 Docon Co Ltd 斜張橋の斜材ケーブル用融雪装置及び斜材ケーブル用融雪装置の設置方法
EP2505714A1 (fr) * 2011-03-28 2012-10-03 Soletanche Freyssinet Procédé de vidange d'un système d'ancrage d'un câble de structure à un élément de construction.
CN204080801U (zh) * 2014-02-20 2015-01-07 苏州市能工基础工程有限责任公司 用于热熔锚的钢绞线
CN105862592A (zh) * 2016-04-13 2016-08-17 江苏法尔胜缆索有限公司 一种热挤聚乙烯锌铝合金镀层钢丝拉索的制作方法
CN205741914U (zh) * 2016-07-11 2016-11-30 武汉迈克斯热能技术有限公司 一种脊腹式桥梁斜拉索融冰化雪系统
WO2018196966A1 (fr) * 2017-04-26 2018-11-01 Vsl International Ag Tuyau multicouche pour câble structural
CN108316146A (zh) * 2018-03-06 2018-07-24 无锡法尔胜悦能动力有限公司 一种桥梁道路用缆索及其加热控制装置
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CN208280016U (zh) * 2018-05-11 2018-12-25 湖北工业大学 一种斜拉索除冰装置
CN110004828A (zh) * 2019-03-26 2019-07-12 江苏法尔胜缆索有限公司 一种防结冰、除冰的热挤聚乙烯平行钢丝拉索体系及其制备方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113587838A (zh) * 2021-08-06 2021-11-02 重庆万桥交通科技发展有限公司 缆索预热装置及裸光纤光栅传感器的封装方法
CN113587838B (zh) * 2021-08-06 2024-03-22 重庆万桥交通科技发展有限公司 缆索预热装置及裸光纤光栅传感器的封装方法
CN114775430A (zh) * 2022-04-13 2022-07-22 江阴法尔胜住电新材料有限公司 一种具有分层分丝支撑结构的钢绞线系杆索体系及安装方法

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