Electrochemical corrosion prevention device for joints of underground comprehensive pipe gallery and construction method

Abstract

The invention discloses an underground comprehensive pipe gallery joint electrochemical corrosion prevention device and a construction method.According to the device, an electrochemical corrosion prevention component and a metal joint are organically combined, comprehensive protection of a pipe gallery bell and spigot and the metal joint in the pipe gallery bell and spigot is achieved, and the periphery of the pipe gallery bell and spigot is tightly wrapped with the electrochemical corrosion prevention component; corrosive factors in the external environment are effectively isolated, so that the corrosion process caused by electrochemical action is slowed down; the metal joint serves as a connecting bridge of the two sections of the comprehensive pipe gallery, the electrochemical inhibition anti-corrosion assembly is integrated, a second defense line is constructed in the pipe gallery through the design, electrochemical corrosion is further prevented, and long-term stability and operation safety of the pipe gallery structure are guaranteed. By adopting the device, the corrosion resistance of the underground comprehensive pipe gallery joint is remarkably improved, the service life is prolonged, the maintenance cost is reduced, and the device has important significance for guaranteeing smooth operation of urban infrastructures.

Description

Technical Field

[0001] The invention belongs to the field of civil engineering equipment, and in particular relates to a joint anti-electrochemical corrosion device for an underground comprehensive pipe gallery and a construction method. Background Art

[0002] The existing anti-corrosion measures for underground integrated pipe gallery joints mainly rely on installing rubber waterstops at the joints and applying longitudinal stress to the structure through prestressed steel bars to squeeze the rubber, thereby blocking the gaps between the pipe sections and achieving sealing and anti-corrosion effects. Under general geological conditions, the above anti-corrosion measures can effectively prevent moisture and corrosive substances from invading the interior of the pipe gallery and protect the safety of the pipe gallery structure and its internal pipelines.

[0003] However, under the special geological conditions of saline-alkali land, existing anti-corrosion measures face severe challenges. The pH value of saline-alkali land varies widely, ranging from 7.1-8.5 for mild saline-alkali land to 8.5-9.5 for moderate saline-alkali land, and even reaches above 9.5 for some severe saline-alkali land. This high-salinity environment not only contains a large amount of corrosive substances such as chloride ions, but also may cause the soil to be strongly alkaline, causing serious corrosion to materials such as metals and rubber. Specifically, it is easy to corrode rubber waterstops: Chloride ions and other corrosive substances in saline-alkali land can accelerate the aging and degradation of rubber materials, reduce their elasticity and sealing performance, and thus affect the sealing effect of waterstops. Rubber waterstops exposed to saline-alkali environments for a long time may have problems such as hardening and cracking, resulting in the inability to effectively seal the gaps between pipe sections, which in turn causes safety hazards such as water seepage and corrosion. Second, electrochemical corrosion of metal joints: Chloride ions in saline-alkali land can destroy the passivation film on the metal surface, accelerate the electrochemical corrosion process, and cause rust and perforation of metal joints. This corrosion not only affects the mechanical properties and sealing performance of the joints, but also may cause structural damage and safety accidents.

[0004] It can be seen that the existing anti-corrosion measures for underground comprehensive pipeline corridor joints cannot play an effective anti-corrosion role in saline-alkali land environment, resulting in the performance of underground comprehensive pipeline corridor joints being affected due to severe corrosion. Summary of the invention

[0005] In order to overcome the above-mentioned technical defects, the present invention provides an anti-electrochemical corrosion device and construction method for the joints of an underground comprehensive pipeline corridor, so as to solve the technical problem that the existing anti-corrosion measures cannot play an effective anti-corrosion role in a saline-alkali environment, resulting in the performance of the joints of the underground comprehensive pipeline corridor being severely affected due to corrosion.

[0006] In order to achieve the above object, the present invention adopts the following technical contents: An anti-electrochemical corrosion device for joints of an underground integrated pipe gallery, comprising an anti-electrochemical corrosion component and a metal joint; The anti-electrochemical corrosion component is coated around the pipe gallery sockets of two connected sections of the integrated pipe gallery, and is used to protect the pipe gallery sockets and the metal joints located inside the integrated pipe gallery; The two sections of the integrated pipe gallery are connected via the metal joint, and the metal joint is also connected to an electrochemical inhibition and anti-corrosion component located inside the integrated pipe gallery, which is used to prevent electrochemical corrosion from occurring inside the integrated pipe gallery.

[0007] Furthermore, the anti-electrochemical corrosion component includes a pipe gallery foundation located around the pipe gallery socket; the pipe gallery foundation includes a reinforced concrete foundation and a TPO waterproof membrane; the reinforced concrete foundation is wrapped around the outside of the TPO waterproof membrane.

[0008] Furthermore, the top of the TPO waterproofing membrane is coated with an asphalt waterproofing coating; the concrete of the reinforced concrete foundation is asphalt concrete, and the steel bars of the reinforced concrete foundation are threaded hot-rolled steel bars.

[0009] Furthermore, the two connected sections of the integrated pipeline corridor are a first section of the pipeline corridor and a second section of the pipeline corridor, and the pipeline corridor socket of the first section of the pipeline corridor is connected with the pipeline corridor socket of the second section of the pipeline corridor to realize the first section of the pipeline corridor and the second section of the pipeline corridor.

[0010] Furthermore, the exterior of the connection between the pipe gallery socket and the pipe gallery plug is also covered with a concrete sleeve, and an eagle-beak rubber waterstop is provided between the connection and the concrete sleeve.

[0011] Furthermore, the metal joint includes a metal screw, a polygonal metal gasket and a hexagonal nut; the metal screw is inserted into the nut compartment of the integrated pipeline corridor, and the two ends are fastened with the hexagonal nuts, the polygonal metal gasket is sleeved on the metal screw, and is cushioned under the hexagonal nut; the metal screw is electrically connected to the electrochemical inhibition and anti-corrosion component.

[0012] Furthermore, the nut compartment is located at the top corner of the integrated pipe gallery.

[0013] Furthermore, the chemical inhibition and anti-corrosion component includes a graphite rod and a voltage-stabilizing transformer arranged in the integrated pipe gallery cabin; the negative electrode of the voltage-stabilizing transformer is connected to the metal joint through a wire, and the positive electrode is connected to the graphite rod through a wire.

[0014] Furthermore, a plurality of the graphite rods are connected in series and arranged in an array at the top of the integrated pipe gallery cabin; the voltage-stabilizing transformer is located at the bottom of the integrated pipe gallery cabin.

[0015] A construction method for a joint anti-electrochemical corrosion device of an underground comprehensive pipe gallery, comprising: Lay the TPO waterproofing membrane on the reinforced concrete foundation to form the foundation of the pipe gallery; The first and second pipe corridors are installed on the top of the pipe corridor foundation by hoisting, and the first and second pipe corridors are connected by metal joints and anti-electrochemical corrosion components; Connecting a metal joint to an electrochemical corrosion suppression component and passing electricity between the two can suppress the occurrence of electrochemical corrosion.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an anti-electrochemical corrosion device for joints of an underground comprehensive pipe gallery. The device organically combines an anti-electrochemical corrosion component with a metal joint, thereby realizing comprehensive protection of the pipe gallery socket and its internal metal joints. The anti-electrochemical corrosion component tightly wraps around the pipe gallery socket, effectively isolating the corrosive factors in the external environment, such as moisture, dust, oxygen, chloride ions and other electrolytes, thereby slowing down the corrosion process caused by electrochemical action; at the same time, the metal joint not only serves as a connecting bridge between two sections of the comprehensive pipe gallery, but also integrates an electrochemical inhibition and anti-corrosion component. This design constructs a second line of defense inside the pipe gallery, further preventing the occurrence of electrochemical corrosion, and ensuring the long-term stability and operational safety of the pipe gallery structure; the use of the device significantly improves the corrosion resistance of the underground comprehensive pipe gallery joints, prolongs the service life, and reduces the maintenance cost, which is of great significance for ensuring the smooth operation of urban infrastructure.

[0017] Preferably, in the present invention, the specific design of the anti-electrochemical corrosion component includes a reinforced concrete foundation and a TPO waterproof membrane, the combination of which provides good waterproof and anti-corrosion properties, further enhancing the protective effect of the pipe gallery joints.

[0018] Preferably, in the present invention, asphalt waterproof coating is applied on the top of the TPO waterproof membrane to improve the durability of the waterproof layer; asphalt concrete and threaded hot-rolled steel bars are used to enhance the strength and stability of the reinforced concrete foundation, further improving the anti-corrosion effect.

[0019] Preferably, in the present invention, the pipe gallery socket of the first pipe gallery section is connected to the pipe gallery socket of the second pipe gallery section. This connection method is simple and clear, and is convenient for construction and maintenance.

[0020] Further preferably, in the present invention, a concrete sleeve is coated on the outside of the connection between the pipe gallery socket and the pipe gallery plug, and an eagle-beak rubber waterstop is installed, which effectively prevents groundwater leakage and further enhances the waterproof and anti-corrosion capabilities of the joint.

[0021] Preferably, in the present invention, the specific design of the metal joint includes a metal screw, a polygonal metal gasket and a hexagonal nut. This design makes the joint connection firm and reliable, and the metal screw is electrically connected to the electrochemical inhibition and anti-corrosion component, which facilitates the realization of the electrochemical inhibition and anti-corrosion function.

[0022] Preferably, in the present invention, the nut cabin is arranged at the top corner of the integrated pipe gallery, which is convenient for installation and maintenance and can fully utilize the space without affecting the normal operation of other facilities inside the pipe gallery.

[0023] Preferably, in the present invention, the design of the electrochemical inhibition and anti-corrosion component includes graphite rods and a voltage-stabilizing transformer, which realizes the electrochemical inhibition and anti-corrosion function through electrical connection, thereby effectively preventing the occurrence of electrochemical corrosion inside the pipe gallery.

[0024] Preferably, in the present invention, the graphite rods are connected in series and arranged in an array on the top of the integrated pipe gallery cabin, and the voltage-stabilizing transformer is located at the bottom. This layout makes the electrochemical corrosion inhibition effect more uniform and improves the overall corrosion resistance.

[0025] The present invention also provides a construction method for an anti-electrochemical corrosion device for joints of an underground comprehensive pipe gallery, comprising the steps of laying waterproof membranes, installing pipe galleries, connecting metal joints and anti-electrochemical corrosion components, connecting electrochemical inhibition and anti-corrosion components, etc., thereby ensuring the standardization and effectiveness of the construction process, thereby ensuring the installation quality and use effect of the anti-electrochemical corrosion device; the use of this method effectively protects the joints of the comprehensive pipe gallery, prevents electrochemical corrosion, avoids the impact on performance, and extends the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a joint anti-electrochemical corrosion device for an underground integrated pipe gallery provided in an embodiment of the present invention; Figure 2 A schematic cross-sectional view of a device for preventing electrochemical corrosion of joints of an underground utility corridor provided in an embodiment of the present invention; Figure 3 A schematic diagram of the connection between the pipe gallery socket and the spigot of a joint anti-electrochemical corrosion device for an underground comprehensive pipe gallery provided in an embodiment of the present invention; Figure 4 A schematic diagram of a metal joint of a joint anti-electrochemical corrosion device for an underground utility corridor provided in an embodiment of the present invention; Figure 5 A schematic diagram of the installation of a metal joint of a joint anti-electrochemical corrosion device for an underground integrated pipe gallery provided in an embodiment of the present invention; Figure 6 A schematic diagram of the overall installation of a metal joint of a joint anti-electrochemical corrosion device for an underground integrated pipe gallery provided in an embodiment of the present invention; Figure 7 A schematic structural diagram of an electrochemical inhibition and anti-corrosion component of an anti-electrochemical corrosion device for joints of an underground comprehensive pipeline corridor provided in an embodiment of the present invention.

[0027] Reference numerals: The first section of the tunnel - 1; the second section of the tunnel - 2; anti-electrochemical corrosion components - 3; graphite rods - 30, metal joints - 31, tunnel sockets 32, eagle-beak rubber waterstop - 33, concrete sleeves - 34, tunnel protection layer - 35, tunnel foundation - 36, TPO waterproofing membrane - 37, reinforced concrete foundation - 40, voltage-stabilizing transformer - 50, conductor - 91; tunnel socket - 60, tunnel socket - 61; polygonal metal gaskets - 80, hexagonal nuts - 81, metal screws - 82. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail in the following specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Example 1 As mentioned in the background technology, under the special geological conditions of saline-alkali land, existing anti-corrosion measures face severe challenges, specifically: First, it is easy to cause corrosion to the rubber waterstop: corrosive substances such as chloride ions in saline-alkali land can accelerate the aging and degradation of rubber materials, reduce their elasticity and sealing performance, and thus affect the sealing effect of the waterstop; rubber waterstops exposed to saline-alkali environments for a long time may have problems such as hardening and cracking, resulting in the inability to effectively seal the gaps between pipe sections, and then causing safety hazards such as water seepage and corrosion; Second, electrochemical corrosion of metal joints: chloride ions in saline-alkali land can destroy the passivation film on the metal surface, accelerate the electrochemical corrosion process, and cause rust, perforation and other problems in metal joints. This corrosion will not only affect the mechanical properties and sealing performance of the joints, but may also cause structural damage and safety accidents.

[0036] In order to solve the above problems, the present invention provides an anti-electrochemical corrosion device and construction method for the joints of an underground comprehensive pipeline corridor. The device can improve the waterproof and anti-electrochemical corrosion properties of the pipeline corridor, and prevent corrosion of the pipeline corridor caused by groundwater, acidic and alkaline salts and chloride ions.

[0037] The present invention is further described in detail below with reference to the accompanying drawings and embodiments: like Figure 1 As shown, in this embodiment, a joint anti-electrochemical corrosion device for an underground integrated pipe gallery is provided, comprising: The anti-electrochemical corrosion component 3 and the metal joint 31; wherein the anti-electrochemical corrosion component 3 and the metal joint 31 connect the first section of the pipe gallery 1 and the second section of the pipe gallery 2, and the specific structure is as follows: like Figure 1 As shown, the anti-electrochemical corrosion component 3 adopts a pipe gallery foundation 36 wrapped around the pipe gallery socket 32 ​​of the first section pipe gallery 1 and the second section pipe gallery 2. The pipe gallery foundation 36 is composed of a TPO waterproofing membrane 37 and a reinforced concrete foundation 40. The foundation pit is designed and excavated according to the ground conditions, and the TPO waterproofing membrane 37 is laid on the foundation soil. Then, asphalt waterproof coating is applied on the top of the TPO waterproofing membrane 37, and then the pipe gallery foundation 36 is constructed. The pipe gallery foundation 36 is made of reinforced concrete, wherein the concrete is corrosion-resistant asphalt concrete, and the steel bars are threaded hot-rolled steel bars.

[0038] Among them, TPO waterproof membrane, namely thermoplastic polyolefin waterproof membrane, is a new type of waterproof membrane that combines the advantages of EPDM rubber and polypropylene; it can protect the pipeline corridor structure from erosion by moisture and chemicals.

[0039] like Figure 1 As shown, in this embodiment, the first section of the pipe gallery 1 is a hollow structure. A hoist is used to lift the first section of the pipe gallery 1 and assemble and fix it on the top of the pipe gallery foundation. The first section of the pipe gallery 1 is used to form a closed chamber, and the material used is reinforced concrete.

[0040] like Figure 1 As shown, in this embodiment, the second section of the pipe gallery 2 is a hollow structure. A hoist is used to lift the second section of the pipe gallery 2 and assemble and fix it on the top of the pipe gallery foundation. The second section of the pipe gallery 2 is used to form a closed chamber, and the material used is reinforced concrete.

[0041] like Figure 1 and Figure 2 As shown, the anti-electrochemical corrosion component 3 is installed around the sockets 32 of the two sections of the pipe gallery. The anti-electrochemical corrosion component 3 is used to protect the concrete sockets, plugs and metal joints 31 to prevent the joints from being corroded by groundwater and electrochemically corroded by acidic and alkaline salts and chloride ions in saline-alkali land.

[0042] like Figure 2 and Figure 3 The pipe gallery socket 32 ​​is connected through a metal joint 31 located at the top corner, wherein the pipe gallery socket 60 and the pipe gallery socket 61 are connected.

[0043] like Figure 3 As shown, the rectangular shaded part in the figure is Figure 2The side portion of the eagle-beak rubber waterstop 33 shown in the figure is compressed and deformed under the extrusion of the outer concrete sleeve 34, thereby blocking the gap between the concrete sleeve and the socket, preventing acidic rainwater and groundwater from seeping into the soil and air rich in acidic gases such as CO2, SO2, NO2 during construction from leaking into the inner cavity of the corridor through the gap, which may easily cause electrochemical corrosion to the metal joints and internal steel bars of the corridor, thereby keeping the inner cavity of the corridor dry and increasing the service life of the overall structure of the corridor. The corridor protective layer 35 is located outside the concrete sleeve 34.

[0044] like Figure 4 The metal joint 31 is made of high-strength stainless steel and is composed of a metal screw 82, a polygonal metal gasket 80 and a hexagonal nut 81; Figure 5 As shown, nut compartments are preset at the top and bottom corners of the inner pipe gallery, and the shape of the nut compartments is the same as that of the polygonal metal gasket 80; first, the metal screw 82 is placed in the hole of the nut compartment, and then the polygonal metal gasket 80 is placed under the hexagonal nut 81 to prevent stress concentration from damaging the concrete, and the bolt pre-tightening force is applied by the thread on the metal screw 82 and tightening the hexagonal nut 81 to fix the first section of the pipe gallery 1 and the second section of the pipe gallery 2.

[0045] like Figure 6 As shown, at the pipe gallery socket 32 ​​, the metal joint 31 is constructed to connect the pipe gallery socket 60 and the pipe gallery socket 61 .

[0046] like Figure 7 As shown, the metal joint 31 located at the top corner of the tunnel is connected in series through the wire 91 inside the tunnel concrete, the graphite rod 30 is connected in series through the wire 91, the voltage-stabilizing transformer 50 is fixed in the cabin inside the integrated tunnel, the wire 91 is connected to the above-mentioned metal screw 82, the graphite rod 90 is fixed inside the tunnel, the graphite rod is connected with the wire 91, the wire 91 connected to the metal screw 82 is connected to the negative pole of the voltage-stabilizing transformer, the wire 91 connected to the graphite rod 30 is connected to the positive pole of the voltage-stabilizing transformer 50, and it is powered on for use; through the relevant properties of electrochemical corrosion, a certain voltage is applied to the part to be protected to inhibit the occurrence of related chemical reactions, thereby greatly extending the service life of the metal joint.

[0047] It should be noted that the graphite rods 30, metal joints 31, wires 91 and voltage-stabilizing transformers 50 are not limited to the specific numbers drawn in the accompanying drawings. Relevant construction personnel in this technical field can increase or decrease their numbers as needed, provided that the device can complete its multi-layer waterproof and anti-electrochemical corrosion functions.

[0048] Example 2 This embodiment also provides a construction method of a joint anti-electrochemical corrosion device for an underground integrated pipe gallery, that is, a working principle, which specifically includes: First, the TPO waterproofing membrane 37 is laid on the reinforced concrete foundation 40 that has been compacted, and then asphalt coating is brushed on the TPO waterproofing membrane 37, and then the reinforced concrete pipe gallery foundation 36 that has been woven and poured is installed on the waterproofing membrane by hoisting, and then the first section of the pipe gallery 1 and the second section of the pipe gallery 2 are installed on the top of the pipe gallery foundation by hoisting. The two sections of the pipe are connected by metal joints 31 and anti-electrochemical corrosion components 3. The anti-electrochemical corrosion component 3 blocks the gap between the socket and the socket of the first section of the pipe gallery 1 and the second section of the pipe gallery 2, which plays a role in waterproofing and dustproofing, and can not only It ensures that the interior of the pipe gallery is dry, protects the internal circuit, and prevents electrochemical corrosion of the metal joints caused by chloride ions; the outside is wrapped with TPO waterproof membrane 37 and painted with asphalt paint, which can effectively prevent the internal steel bars of the outer concrete sleeve 34 from rusting; and according to the relevant principles of electrochemical corrosion, the metal screws 82 of the metal joints 31 are connected in series and connected to the negative pole of the voltage-stabilizing transformer 50 through the wire 91, and the graphite rods 30 are connected in series to the positive pole to form a closed loop; in the case of dryness and power-on, the occurrence of electrochemical corrosion can be suppressed to the greatest extent, greatly extending the service life of the joints and the pipe gallery structure.

[0049] In summary, the present invention provides a joint anti-electrochemical corrosion device and construction method for an underground integrated pipe gallery, which has the following advantages over existing anti-corrosion measures: The device has a reasonable structural design. The two pipe sections are connected by anti-electrochemical corrosion components and metal joints. The structure is relatively simple and the construction is convenient, which is conducive to the pre-assembly construction of underground structures. TPO waterproof membrane is laid at the bottom of the tunnel foundation. Because it not only has excellent waterproof ability, but also has good acid and alkali corrosion resistance and chloride ion corrosion resistance, it can not only prevent the erosion and damage of the tunnel joint part by groundwater, but also can block the electrochemical corrosion of the tunnel joint part caused by acid salts, alkaline salts and chloride ions to the maximum extent. The anti-electrochemical corrosion components are composed of multiple layers of waterproof measures. At the same time, it also ensures the dryness of the tunnel joints and the tunnel cabin in the long-term underground environment, prevents the electrochemical corrosion damage to the tunnel structure caused by groundwater, acid and alkaline salts and chloride ions, and extends the service life of the wires and related equipment in the cabin.

[0050] The above embodiment is only one of the implementation methods that can realize the technical solution of the present invention. The scope of protection claimed by the present invention is not limited only to this embodiment, but also includes changes, replacements and other implementation methods that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention.

Claims

1. An anti-electrochemical corrosion device for joints of an underground comprehensive pipe gallery, characterized in that: It comprises an electrochemical corrosion resistant component (3) and a metal joint (31); The anti-electrochemical corrosion component (3) is wrapped around the pipe gallery socket (32) of two connected sections of the integrated pipe gallery, and is used to protect the pipe gallery socket (32) and the metal joint (31) located inside the integrated pipe gallery; The two sections of the integrated pipe gallery are connected via the metal joint (31), and the metal joint (31) is also connected to an electrochemical inhibition and anti-corrosion component located inside the integrated pipe gallery, for preventing electrochemical corrosion from occurring inside the integrated pipe gallery.

2. The device for preventing electrochemical corrosion of joints of an underground comprehensive pipe gallery according to claim 1 is characterized in that: The anti-electrochemical corrosion component (3) comprises a pipe gallery foundation (36) located around the pipe gallery socket (32); the pipe gallery foundation (36) comprises a reinforced concrete foundation (40) and a TPO waterproofing membrane (37); the reinforced concrete foundation (40) is wrapped around the outside of the TPO waterproofing membrane (37).

3. The device for preventing electrochemical corrosion of joints of an underground comprehensive pipe gallery according to claim 2 is characterized in that: The top of the TPO waterproofing coil (37) is coated with an asphalt waterproofing coating; the concrete of the reinforced concrete foundation (40) is asphalt concrete, and the steel bars of the reinforced concrete foundation (40) are threaded hot-rolled steel bars.

4. The device for preventing electrochemical corrosion of joints of an underground utility corridor according to claim 1, characterized in that: The two connected sections of the integrated pipe gallery are a first section of the pipe gallery (1) and a second section of the pipe gallery (2); the pipe gallery socket (60) of the first section of the pipe gallery (1) is connected to the pipe gallery socket (61) of the second section of the pipe gallery (2), thereby realizing the first section of the pipe gallery (1) and the second section of the pipe gallery (2).

5. The device for preventing electrochemical corrosion of joints of an underground utility corridor according to claim 4, characterized in that: The exterior of the connection between the pipe gallery socket (60) and the pipe gallery plug (61) is also covered with a concrete sleeve (64), and an eagle-beak rubber water stop (33) is sleeved between the connection and the concrete sleeve (64).

6. The device for preventing electrochemical corrosion of joints of an underground utility corridor according to claim 1, characterized in that: The metal joint (31) comprises a metal screw (82), a polygonal metal gasket (80) and a hexagonal nut (81); the metal screw (82) is inserted into the nut compartment of the integrated pipe gallery, and is fastened at both ends by the hexagonal nuts (81); the polygonal metal gasket (80) is sleeved on the metal screw (82) and cushioned under the hexagonal nut (81); the metal screw (82) is electrically connected to the electrochemical corrosion inhibition component.

7. The device for preventing electrochemical corrosion of joints of an underground utility corridor according to claim 6, characterized in that: The nut compartment is located at the top corner of the integrated pipe gallery.

8. The device for preventing electrochemical corrosion of joints of an underground utility corridor according to claim 1, characterized in that: The chemical inhibition and corrosion prevention assembly comprises a graphite rod (30) and a voltage-stabilizing transformer (50) arranged in the integrated pipe gallery cabin; the negative electrode of the voltage-stabilizing transformer (50) is connected to the metal joint (31) via a wire (91), and the positive electrode is connected to the graphite rod (30) via a wire (91).

9. The device for preventing electrochemical corrosion of joints of an underground utility corridor according to claim 8, characterized in that: A plurality of graphite rods (30) are connected in series and arranged in an array on the top of the integrated pipe gallery cabin; and the voltage-stabilizing transformer (50) is located at the bottom of the integrated pipe gallery cabin.

10. A construction method for a joint anti-electrochemical corrosion device for an underground comprehensive pipe gallery, characterized in that: include: Laying a TPO waterproofing membrane (37) on a reinforced concrete foundation (40) to form a pipe gallery foundation (36); The first section of the pipe gallery (1) and the second section of the pipe gallery (2) are installed on the top of the pipe gallery foundation (36) by hoisting, and the first section of the pipe gallery (1) and the second section of the pipe gallery (2) are connected by using a metal joint (31) and an anti-electrochemical corrosion component (3); The metal joint (31) is connected to the electrochemical corrosion suppression component and the two are energized to suppress the occurrence of electrochemical corrosion.

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