Full-time global temperature and humidity measurement intelligent cable strand of suspension bridge

Abstract

A high-strength suspension bridge full-time global temperature and humidity measurement intelligent cable strand is mainly composed of parallel steel wire bundles and anchor cups. The parallel steel wire bundle is a hexagon formed by combining a fiber grating sensor and a zinc-aluminum rare earth alloy steel wire, and the sensor is located in the center of the parallel steel wire bundle; the parallel steel wire bundles are arranged in the anchor cup, the sensor at the casting position section is protected through a heat insulation protection material, then zinc-copper alloy is cast, and the main cable intelligent cable strand is manufactured after cooling and curing. The temperature and humidity of the steel wire in the main cable of the suspension bridge can be monitored, intelligent construction and development of the bridge industry are promoted, and good application prospects are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the main cable strand for suspension bridge, especially to a kind of suspension bridge full-time full-domain temperature and humidity measuring high-strength zinc-aluminum rare earth alloy plating main cable wisdom strand. BACKGROUND

[0002] Main cable is the main load-bearing component of suspension system, its safety is the important guarantee of the safety of whole bridge, is related to the service life and the running limit of whole bridge.Main cable is generally combined by multiple main cable strands, and main cable strand is generally combined by 91 silk, 127 silk high-strength alloy plating steel wire through parallel arrangement, and the cross section shape is regular hexagon.Main cable strand is connected with anchor by alloy hot casting at both ends, and when main cable strand is erected, both ends anchor is connected with anchorage zone pull rod.Main cable is protected by winding steel wire and sealant after main cable strand is erected.

[0003] Because main cable works in outdoor environment, it is attacked by wind, sun and rain for a long time, so whether the internal steel wire working environment is normal is particularly important for the service life of main cable, especially temperature and humidity two factors.Therefore, in order to evaluate the temperature and humidity of internal steel wire working, a kind of main cable strand capable of detecting internal steel wire working environment is designed. UTILITY MODEL CONTENT

[0004] The utility model solves the function implementation of a kind of suspension bridge full-time full-domain temperature and humidity measuring high-strength zinc-aluminum rare earth alloy plating main cable wisdom strand and its manufacturing method, realizes the monitoring of the internal steel wire full-time full-domain temperature and humidity working environment of main cable of suspension system.

[0005] The application discloses a full-time and full-area temperature and humidity measuring intelligent cable strand of a suspension bridge, which is composed of parallel wire bundles and a main cable strand anchor cup; the parallel wire bundle is composed of one temperature and humidity measuring ultra-weak fiber grating sensor and 90 high-strength galvanized aluminum rare earth alloy steel wires which are combined into a hexagon through parallel arrangement and pressure application and are externally wrapped with a tape; the sensor is twisted from one optical cable and six stainless steel wires with the same diameter as the optical cable; the optical cable is internally and externally provided with a temperature measuring weak reflection array sensing bare optical fiber and a humidity measuring weak reflection array sensing bare optical fiber, aramid, a stainless steel spiral protection sleeve and a stainless steel wire metal mesh reinforcement which are symmetrically arranged at the center of the sensor; the temperature measuring weak reflection array sensing bare optical fiber and the humidity measuring weak reflection array sensing bare optical fiber are provided with one grating every 1m in length; the sensor is located at the center of the parallel wire bundle; one end of the parallel wire bundle is evenly separated and inserted into the wire separation plate holes of the anchor cup, and the wire separation plate plane is perpendicular to the central axis of the anchor cup; the leading end of the sensor is 100cm away from the wire separation plate plane; the anchor cup is internally provided with a casting material for fixing and cutting off the excess parallel wire bundle; a cover plate is arranged on the wire separation plate, a circular hole is arranged in the middle of the cover plate for leading out the sensor, and the cover plate is connected with the anchor cup through threads.

[0006] The diameter of the sensor is one time of the diameter of the alloy steel wire.

[0007] The casting material is a zinc-copper alloy.

[0008] In order to solve the above problems, the utility model adopts the technical scheme that the cable strand is composed of parallel wire bundles and an anchor cup; the parallel wire bundle is combined into a hexagon from one fiber grating sensor and high-strength galvanized aluminum rare earth alloy steel wires, and the sensor is located at the center of the parallel wire bundle; the parallel wire bundle is arranged in the anchor cup, and the sensor at the pouring position section is protected by heat insulation material, then zinc-copper alloy is poured, and the main cable intelligent cable strand is prepared after cooling and solidification.

[0009] Beneficial effects: the internal steel wires of the cable strand can be monitored in the full-time and full-area temperature and humidity working environment, the long-term operation of the bridge can be safely monitored, and the service life of the bridge is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a temperature and humidity measuring main cable intelligent cable strand section schematic view.

[0011] Figure 2 It is a temperature and humidity measuring main cable intelligent cable strand anchoring schematic view.

[0012] Figure 3 It is a Figure 1 It is a sensor structure schematic view.

[0013] In the figure: 1-parallel wire bundle, 2-anchor cup, 3-sensor, 3-1 optical cable, 3-2 stainless steel wire, 3-1-1-temperature measuring weak reflection array sensing bare optical fiber, 3-1-2-aramid, 3-1-3-stainless steel spiral protective sleeve, 3-1-4-stainless steel metal mesh reinforcement, 3-1-5-humidity measuring weak reflection array sensing bare optical fiber, 4-alloy steel wire, 5-wrapping tape, 6-splinting plate, 7-cast material, 8-cover plate. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the drawings, and it should be understood that the specific embodiments described herein are only used to explain the utility model and not used to limit the utility model.

[0015] A suspension bridge full-time full-domain temperature and humidity measuring wisdom cable strand is composed of parallel wire bundle 1 and main cable strand anchor cup 2; the parallel wire bundle 1 is combined into a hexagon by 1 temperature and humidity measuring ultra-weak optical fiber grating sensor 3 and 90 1960MPa high-strength galvanized aluminum rare earth alloy steel wires 4 through parallel arrangement and pressure application, and is externally wrapped with wrapping tape 5; the sensor 3 is twisted by 1 optical cable 3-1 and 6 stainless steel wires 3-2 with stainless steel material, and the diameter of the optical cable 3-1 is the same as that of the stainless steel wire 3-2; the optical cable 3-1 adopts metal mesh armoring mode and is composed of temperature measuring weak reflection array sensing bare optical fiber 3-1-1 and humidity measuring weak reflection array sensing bare optical fiber 3-1-5, aramid 3-1-2, stainless steel spiral protective sleeve 3-1-3 and stainless steel wire metal mesh reinforcement 3-1-4 in a central symmetry with the sensor 3; the temperature measuring weak reflection array sensing bare optical fiber 3-1-1 and the humidity measuring weak reflection array sensing bare optical fiber 3-1-5 are provided with an optical grating every 1m in length; the sensor 3 is located at the central position of the parallel wire bundle 1; one end of the parallel wire bundle 1 is evenly splinted and opened, and is correspondingly inserted into the splinting plate 6 hole of the anchor cup 2, and the plane of the splinting plate 6 is perpendicular to the central axis of the anchor cup 2; the distance between the leading end of the sensor 3 and the plane of the splinting plate 6 is 100cm; the anchor cup 2 is internally cast with cast material 7, and the excess parallel wire bundle 1 is fixed and cut off; the cover plate 8 is arranged on the splinting plate 6, and a circular hole is arranged in the middle to lead out the sensor 3 and is connected with the anchor cup 2 through threads.

[0016] The diameter of the sensor 3 is 1 times of that of the alloy steel wire 4;

[0017] The cast material 7 is zinc-copper alloy.

Claims

1. A full-time full-area temperature and humidity measuring intelligent cable strand for a suspension bridge, which is composed of parallel steel wire bundles (1) and main cable strand anchor cups (2); characterized in that: The parallel steel wire bundle (1) is composed of 1 temperature and humidity measuring sensor (3) of ultra-weak fiber grating and 90 1960MPa high-strength galvanized aluminum rare earth alloy steel wires (4) through parallel arrangement and pressure combination into a hexagon, and is wrapped with an outer band (5); the sensor (3) is twisted by 1 optical cable (3-1) and 6 stainless steel wires (3-2) made of stainless steel, and the diameter of the optical cable (3-1) is the same as that of the stainless steel wire (3-2); the optical cable (3-1) adopts a metal mesh armoring method, and is composed of a temperature measuring weak reflection array sensing bare optical fiber (3-1-1) and a humidity measuring weak reflection array sensing bare optical fiber (3-1-5) which are centrally symmetrical with the sensor (3) from inside to outside, aramid (3-1-2), stainless steel spiral protective sleeve (3-1-3), stainless steel wire metal mesh reinforcing member (3-1-4); the temperature measuring weak reflection array sensing bare optical fiber (3-1-1) and the humidity measuring weak reflection array sensing bare optical fiber (3-1-5) are provided with a grating every 1m on the whole length; the sensor (3) is located at the center of the parallel steel wire bundle (1); one end of the parallel steel wire bundle (1) is evenly separated and inserted into the holes of the filament distribution plate (6) of the anchor cup (2) one by one, and the plane of the filament distribution plate (6) is perpendicular to the central axis of the anchor cup (2); the lead-out end of the sensor (3) is 100cm away from the plane of the filament distribution plate (6); the anchor cup (2) is internally cast with casting material (7) to fix and cut off the excess parallel steel wire bundle (1); the cover plate (8) is placed on the filament distribution plate (6) and is provided with a circular hole in the middle to lead out the sensor (3) and is connected with the anchor cup (2) through threads; the diameter of the sensor (3) is 1 times of that of the alloy steel wire (4); the casting material (7) is zinc-copper alloy.

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