Suspension bridge main cable protection coating aging monitoring system

Abstract

The application discloses a kind of suspension bridge main cable protective coating aging monitoring systems, it is related to bridge anticorrosive coating monitoring technical field, including main cable, and the cable clamp connected on main cable;It further includes the sensor sensing sheet of being located on cable clamp;The butt joint of the end surface inner ring edge of cable clamp and straight seam is all provided with sensing sheet installation groove, the wire slot of being connected sensing sheet installation groove is opened in cable clamp, sensor sensing sheet is equipped in sensing sheet installation groove, the wire of sensor sensing sheet is embedded in wire slot, the outer surface of cable clamp is coated with anticorrosive coating, anticorrosive coating covers sensing sheet installation groove and wire slot, and the corrosion degree of anticorrosive coating is detected by the way of measuring alternating current impedance by sensor sensing sheet.The application provides a kind of technical scheme for detecting the aging condition of bridge main cable protective coating by the way of measuring alternating current impedance, can reduce the detection to main cable, and is not easy to damage, and does not need to frequently replace.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge anticorrosion coating monitoring, in particular to a suspension bridge main cable protective coating aging monitoring system. BACKGROUND

[0002] Bridge cable is an important load-bearing structure of bridge engineering, and its corrosion protection effect is related to the safety and service life of the bridge, including the main cable, sling, spreader cable of suspension bridge, various types of stay cable and related steel structural members.

[0003] Chinese patent ZL99119397.0 discloses a corrosion protection method for the main cable winding section of a suspension bridge, and the structure from inside to outside is: phosphating primer, non-sulfurized rubber non-drying sealant layer, winding steel wire or strip winding layer, phosphating primer layer, epoxy cloud iron primer layer, polysulfide type waterproof sealant layer, and non-yellowing polyurethane topcoat layer. This technology has achieved positive results in engineering application for more than ten years. However, since the polysulfide waterproof sealant layer uses a two-component polysulfide sealant, which is a two-component product that needs to be mixed on site before use, manual mixing or high-speed dispersion machine mixing under normal pressure is easy to mix a large amount of air, which significantly reduces the shielding performance of the waterproof sealant layer, and the corrosion medium such as water vapor can easily penetrate, significantly reducing the sealing and waterproof performance. In addition, the polysulfide sealant has high viscosity, and it is difficult to scrape and surface finish on site, which reduces work efficiency and significantly increases construction cost.

[0004] After the main cable is finished with corrosion and fire protection, a layer of anticorrosion coating is coated on the outermost layer. The damage of the anticorrosion coating will threaten the internal main cable structure, so it is necessary to detect the anticorrosion coating. However, the anticorrosion coating damage at the gap of the cable clamp structure is the most difficult to detect, causing detection loopholes.

[0005] Therefore, how to provide a system capable of monitoring the aging of the protective coating of the main cable of the suspension bridge, especially the detection of the gap of the cable clamp, is a problem that needs to be solved by those skilled in the art. SUMMARY

[0006] Therefore, the present application provides a suspension bridge main cable protective coating aging monitoring system, which aims to solve the above technical problems.

[0007] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0008] A suspension bridge main cable protective coating aging monitoring system, comprising a main cable, and a cable clamp connected to the main cable; further comprising: a sensor sensing sheet arranged on the cable clamp;

[0009] The end face inner ring edge and the butt joint of the straight slit of the cable clamp are both provided with an inductive sheet mounting groove, the cable clamp is provided with a wire slot connected with the inductive sheet mounting groove, the inductive sheet mounting groove is provided with the sensor inductive sheet, the wire of the sensor inductive sheet is embedded in the wire slot, the outer surface of the cable clamp is coated with an anticorrosive coating, the anticorrosive coating covers the inductive sheet mounting groove and the wire slot, and the sensor inductive sheet detects the corrosion degree of the anticorrosive coating by measuring the alternating current impedance.

[0010] By the technical scheme, the aging condition of the bridge main cable protective coating is detected by measuring the alternating current impedance, and particularly, the gap between the cable clamp and the main cable is detected, the coating at the gap is more easily damaged, the coating at the gap is more difficult to be detected due to the limitation of the structure, the detection of the main cable is reduced, the overall main cable state is reflected by the local detection, the detection is more convenient and effective, and the main cable is not damaged and needs not to be frequently replaced.

[0011] Preferably, in the above-mentioned suspension bridge main cable protective coating aging monitoring system, the inductive sheet mounting groove comprises a first inductive sheet mounting groove provided on the end face inner ring edge of the cable clamp, a second inductive sheet mounting groove provided on the straight slit of the end face of the cable clamp, and a third inductive sheet mounting groove provided on the straight slit of the outer circumferential surface of the cable clamp, and the first inductive sheet mounting groove, the second inductive sheet mounting groove and the third inductive sheet mounting groove are all bonded with the sensor inductive sheet. By providing the first inductive sheet mounting groove, the second inductive sheet mounting groove and the third inductive sheet mounting groove, the ring slit and the straight slit of the cable clamp can be covered, and the detection effect is more comprehensive.

[0012] Preferably, in the above-mentioned suspension bridge main cable protective coating aging monitoring system, the surface of the sensor inductive sheet is flush with the opening edge of the inductive sheet mounting groove. The inductive sheet mounting groove and the sensor inductive sheet are integrated with the original structure of the cable clamp, and the interference of the later designed structure on the original structure is prevented.

[0013] Preferably, in the above-mentioned suspension bridge main cable protective coating aging monitoring system, the wire slot comprises a first wire slot provided on the end face inner ring edge of the cable clamp and connected with the first inductive sheet mounting groove, a second wire slot provided on the straight slit of the outer surface of the cable clamp and connected with the second inductive sheet mounting groove and the third inductive sheet mounting groove, and a third wire slot provided in the cable clamp and connected with the first inductive sheet mounting groove and the third inductive sheet mounting groove. The wire slot is designed in cooperation with the mounting groove, and has excellent effect.

[0014] Preferably, in the above-mentioned suspension bridge main cable protective coating aging monitoring system, the wire is sequentially routed from the first routing groove to the third routing groove and the second routing groove. The routing groove is designed to meet the damage of the wire movement to the coating, so that the wire is arranged in order according to the routing groove, and the cooperation structure of the cable clamp and the main cable can limit the wire, so that the wire does not move and does not damage the coating.

[0015] Preferably, in the above-mentioned suspension bridge main cable protective coating aging monitoring system, the routing groove is filled with corrosion-resistant silica gel, the corrosion-resistant silica gel wraps the wire, and the surface of the cable clamp is flush. The stability of the wire can be further limited, and at the same time the overall structure of the cable clamp is not damaged.

[0016] Preferably, in the above-mentioned suspension bridge main cable protective coating aging monitoring system, further comprising a telecommunication signal acquisition device connected with the wire, for realizing acquisition of the electric signal of the sensor sensing sheet, and detecting the corrosion degree of the anticorrosive coating by measuring the alternating current impedance. The electric signal acquisition device can realize signal acquisition and meet the detection requirements.

[0017] Preferably, in the above-mentioned suspension bridge main cable protective coating aging monitoring system, further comprising a locking hoop, the locking hoop is locked and buckled at both ends of the cable clamp, for pressing the wire. The design of the locking hoop can finally meet the requirements of limiting the wire and increasing the stability to prevent the wire from moving and damaging the coating.

[0018] Preferably, in the above-mentioned suspension bridge main cable protective coating aging monitoring system, the locking hoop is composed of two split hoop structures. It is easy to connect.

[0019] Preferably, in the above-mentioned suspension bridge main cable protective coating aging monitoring system, the anticorrosive coating covers the connection gap between the cable clamp and the main cable. The detection requirements can be met.

[0020] According to the above technical solution, compared with the prior art, the suspension bridge main cable protective coating aging monitoring system has the following advantages:

[0021] 1. The application provides a kind of technical solutions for detecting the aging condition of bridge main cable protective coating by measuring alternating current impedance, in particular, the application focuses on detecting the gap at the connection between cable clamp and main cable, in general, the coating at gap is more easily damaged, however, due to the limitation of structure, the coating at gap is more difficult to be detected, and by using the scheme provided by the application, the detection of main cable can be reduced, the overall main cable state can be reflected by local detection, which has more convenient and effective detection effect, and the application is not easy to damage and does not need to be replaced frequently.

[0022] 2. The application can cover the ring seam and straight seam of the cable clamp by setting the first induction sheet mounting groove, the second induction sheet mounting groove and the third induction sheet mounting groove, and has more comprehensive detection effect.

[0023] 3. The design of the wiring slot is more to meet the damage of the coating caused by wire movement, therefore, the wires are arranged in order according to the wiring slot, and the cooperation structure of cable clamp and main cable can limit the wires, so that the wires will not move and will not damage the coating. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only embodiments of the application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0025] Figure 1 The attached drawing is the structure front view of the connection between main cable and cable clamp provided by the application;

[0026] Figure 2 The attached drawing is the structure side view of the connection between main cable and cable clamp provided by the application;

[0027] Figure 3 The attached drawing is the structure front view of the cable clamp provided by the application;

[0028] Figure 4 The attached drawing is the structure cross-sectional view of the cable clamp provided by the application;

[0029] Figure 5 The attached drawing is the structure bottom view of the cable clamp provided by the application;

[0030] Figure 6 The attached drawing is the electrical connection schematic diagram provided by the application.

[0031] Wherein:

[0032] 1-main cable;

[0033] 2-cable clamp;

[0034] 21-sensing piece mounting groove; 211-first sensing piece mounting groove; 212-second sensing piece mounting groove; 213-third sensing piece mounting groove; 22-wiring groove; 221-first wiring groove; 222-second wiring groove; 223-third wiring groove;

[0035] 3-sensor sensing piece;

[0036] 4-electrical signal acquisition device;

[0037] 5-locking hoop;

[0038] 6-wire. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] Referring to the drawings Figure 1 to the drawings Figure 6 The embodiments of the present application disclose a suspension bridge main cable protection coating aging monitoring system, which comprises a main cable 1 and a cable clamp 2 connected to the main cable 1; further comprising: a sensor sensing piece 3 arranged on the cable clamp 2.

[0041] The end face inner ring edge and the butt joint of the straight slot of the cable clamp 2 are both provided with a sensing piece mounting groove 21, the cable clamp 2 is provided with a wiring groove 22 connected to the sensing piece mounting groove 21, the sensing piece mounting groove 21 is provided with a sensor sensing piece 3, the wire 6 of the sensor sensing piece 3 is embedded in the wiring groove 22, the outer surface of the cable clamp 2 is coated with a corrosion-resistant coating, the corrosion-resistant coating covers the sensing piece mounting groove 21 and the wiring groove 22, and the sensor sensing piece 3 detects the corrosion degree of the corrosion-resistant coating by measuring the alternating current impedance.

[0042] In order to further optimize the above technical solution, the sensing piece mounting groove 21 comprises a first sensing piece mounting groove 211 arranged on the end face inner ring edge of the cable clamp 2, a second sensing piece mounting groove 212 arranged on the straight slot of the cable clamp 2, and a third sensing piece mounting groove 213 arranged on the straight slot of the outer circumferential surface of the cable clamp 2, and the first sensing piece mounting groove 211, the second sensing piece mounting groove 212 and the third sensing piece mounting groove 213 are all bonded with the sensor sensing piece 3.

[0043] In order to further optimize the above technical solution, the surface of the sensor sensing piece 3 is flush with the opening edge of the sensing piece mounting groove 21.

[0044] In order to further optimize the above technical solution, the wire groove 22 comprises a first wire groove 221 which is arranged on the inner ring edge of the end surface of the cable clamp 2 and connected with the first sensing sheet mounting groove 211, a second wire groove 222 which is arranged on the straight seam of the outer surface of the cable clamp 2 and connected with the second sensing sheet mounting groove 212 and the third sensing sheet mounting groove 213, and a third wire groove 223 which is arranged in the inner part of the cable clamp 2 and connected with the first sensing sheet mounting groove 211 and the third sensing sheet mounting groove 213.

[0045] In order to further optimize the above technical solution, the wire groove 22 comprises a first wire groove 221 which is arranged on the inner ring edge of the end surface of the cable clamp 2 and connected with the first sensing sheet mounting groove 211, a second wire groove 222 which is arranged on the straight seam of the outer surface of the cable clamp 2 and connected with the second sensing sheet mounting groove 212 and the third sensing sheet mounting groove 213, and a third wire groove 223 which is arranged in the inner part of the cable clamp 2 and connected with the first sensing sheet mounting groove 211 and the third sensing sheet mounting groove 213.

[0046] In order to further optimize the above technical solution, the wire groove 22 comprises a first wire groove 221 which is arranged on the inner ring edge of the end surface of the cable clamp 2 and connected with the first sensing sheet mounting groove 211, a second wire groove 222 which is arranged on the straight seam of the outer surface of the cable clamp 2 and connected with the second sensing sheet mounting groove 212 and the third sensing sheet mounting groove 213, and a third wire groove 223 which is arranged in the inner part of the cable clamp 2 and connected with the first sensing sheet mounting groove 211 and the third sensing sheet mounting groove 213.

[0047] In order to further optimize the above technical solution, the wire groove 22 comprises a first wire groove 221 which is arranged on the inner ring edge of the end surface of the cable clamp 2 and connected with the first sensing sheet mounting groove 211, a second wire groove 222 which is arranged on the straight seam of the outer surface of the cable clamp 2 and connected with the second sensing sheet mounting groove 212 and the third sensing sheet mounting groove 213, and a third wire groove 223 which is arranged in the inner part of the cable clamp 2 and connected with the first sensing sheet mounting groove 211 and the third sensing sheet mounting groove 213.

[0048] In order to further optimize the above technical solution, the wire groove 22 comprises a first wire groove 221 which is arranged on the inner ring edge of the end surface of the cable clamp 2 and connected with the first sensing sheet mounting groove 211, a second wire groove 222 which is arranged on the straight seam of the outer surface of the cable clamp 2 and connected with the second sensing sheet mounting groove 212 and the third sensing sheet mounting groove 213, and a third wire groove 223 which is arranged in the inner part of the cable clamp 2 and connected with the first sensing sheet mounting groove 211 and the third sensing sheet mounting groove 213.

[0049] In order to further optimize the above technical solution, the wire groove 22 comprises a first wire groove 221 which is arranged on the inner ring edge of the end surface of the cable clamp 2 and connected with the first sensing sheet mounting groove 211, a second wire groove 222 which is arranged on the straight seam of the outer surface of the cable clamp 2 and connected with the second sensing sheet mounting groove 212 and the third sensing sheet mounting groove 213, and a third wire groove 223 which is arranged in the inner part of the cable clamp 2 and connected with the first sensing sheet mounting groove 211 and the third sensing sheet mounting groove 213.

[0050] In order to further optimize the above technical solution, the wire groove 22 comprises a first wire groove 221 which is arranged on the inner ring edge of the end surface of the cable clamp 2 and connected with the first sensing sheet mounting groove 211, a second wire groove 222 which is arranged on the straight seam of the outer surface of the cable clamp 2 and connected with the second sensing sheet mounting groove 212 and the third sensing sheet mounting groove 213, and a third wire groove 223 which is arranged in the inner part of the cable clamp 2 and connected with the first sensing sheet mounting groove 211 and the third sensing sheet mounting groove 213.

[0051] In the embodiment, the wire 6 which is connected with the sensor sensing sheet in the first sensing sheet mounting groove 211 passes through the first wire groove 221 and the third wire groove 223, enters the cable clamp 2, then converges with the wire 6 which is connected with the sensor sensing sheet in the third sensing sheet mounting groove 213, then passes through the second wire groove 222, finally returns to the end of the cable clamp 2, and is finally tightened and positioned by the locking hoop 5.

[0052] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

[0053] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the appended claims are intended to cover all such modifications that do not depart from the true spirit and scope of the application. Therefore, the application is not limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A suspension bridge main cable protective coating aging monitoring system, comprising a main cable (1) and cable clamps (2) connected to the main cable (1); characterized in that, The aging of the protective coating of the main cable of the bridge is detected by measuring the AC impedance. The gap at the connection between the cable clamp (2) and the main cable (1) is detected, and the coating at the gap is more easily damaged. It also includes a sensor induction plate (3) set on the cable clamp (2). The inner edge of the end face of the cable clamp (2) and the joint of the straight seam are provided with sensor plate mounting grooves (21). The cable clamp (2) is provided with a wiring groove (22) connecting the sensor plate mounting groove (21). The sensor plate (3) is provided in the sensor plate mounting groove (21). The wire (6) of the sensor plate (3) is embedded in the wiring groove (22). The outer surface of the cable clamp (2) is coated with an anti-corrosion coating. The anti-corrosion coating covers the sensor plate mounting groove (21) and the wiring groove (22). The sensor plate (3) detects the degree of corrosion of the anti-corrosion coating by measuring the AC impedance. The sensor mounting groove (21) includes a first sensor mounting groove (211) opened on the inner edge of the end face of the cable clamp (2), a second sensor mounting groove (212) opened on the straight seam of the end face of the cable clamp (2), and a third sensor mounting groove (213) opened on the straight seam of the outer circumferential surface of the cable clamp (2). The sensor sensor (3) is bonded to the first sensor mounting groove (211), the second sensor mounting groove (212), and the third sensor mounting groove (213). By setting the first sensor mounting groove (211), the second sensor mounting groove (212), and the third sensor mounting groove (213), the circumferential seam and the straight seam of the cable clamp (2) can be covered. The anti-corrosion coating covers the connection gap between the cable clamp (2) and the main cable (1).

2. The aging monitoring system for the protective coating of a suspension bridge main cable according to claim 1, characterized in that, The surface of the sensor sensing sheet (3) is flush with the opening edge of the sensing sheet mounting groove (21).

3. The aging monitoring system for the protective coating of a suspension bridge main cable according to claim 1, characterized in that, The wiring groove (22) includes a first wiring groove (221) that is opened on the inner edge of the end face of the cable clamp (2) and connected to the first sensor plate mounting groove (211), a second wiring groove (222) that is opened on the straight seam of the outer surface of the cable clamp (2) and connected to the second sensor plate mounting groove (212) and the third sensor plate mounting groove (213), and a third wiring groove (223) that is opened inside the cable clamp (2) and connected to the first sensor plate mounting groove (211) and the third sensor plate mounting groove (213).

4. The aging monitoring system for the protective coating of a suspension bridge main cable according to claim 3, characterized in that, The conductor (6) is arranged sequentially from the first wiring groove (221) to the third wiring groove (223) and the second wiring groove (222).

5. The aging monitoring system for the protective coating of a suspension bridge main cable according to claim 1, characterized in that, The cable tray (22) is filled with corrosion-resistant silicone, which wraps around the wire (6) and is flush with the surface of the cable clip (2).

6. The aging monitoring system for the protective coating of a suspension bridge main cable according to claim 1, characterized in that, It also includes an electrical signal acquisition device (4) connected to the wire (6) for acquiring the electrical signal of the sensor sensing sheet (3) and detecting the degree of corrosion of the anti-corrosion coating by measuring the AC impedance.

7. The aging monitoring system for the protective coating of a suspension bridge main cable according to claim 1, characterized in that, It also includes a locking clamp (5), which is locked and fastened to both ends of the cable clamp (2) to press the conductor (6).

8. The aging monitoring system for the protective coating of a suspension bridge main cable according to claim 7, characterized in that, The locking clamp (5) consists of two separate clamp structures.

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