An assembled marine concrete substructure anti-corrosion device

Abstract

The utility model discloses an assembled anti-corrosion device for a marine concrete lower structure, including a protective plate, which is attached to the tidal range and wave splash area of ​​the marine concrete lower structure by an adhesive, and a joint is left between two adjacent protective plates, and a sealing strip is fixed at the joint by an adhesive, and the protective plate and the sealing strip are both made of glass. The protective plate and the sealing strip made of glass are coated on the marine concrete lower structure by an adhesive, which can effectively block the contact between seawater and the wave splash tidal range area of ​​the lower structure, block the attachment and erosion of marine organisms to the marine concrete lower structure, improve the anti-corrosion performance of the marine concrete lower structure, and extend the service life of the marine concrete lower structure; bonding with epoxy resin adhesive can buffer the impact of waves and floating objects on the marine concrete lower structure, and can also play a role in repairing concrete surface defects and sealing concrete surface cracks.

Description

Technical Field

[0001] The utility model relates to the technical field of marine engineering, in particular to an assembled marine engineering concrete lower structure anti-corrosion device. Background Art

[0002] With the continuous expansion of infrastructure construction in coastal areas, the number of marine engineering buildings and offshore bridges such as docks and drilling platforms has increased dramatically. Many of the substructures of these facilities are in the form of concrete piers. These pier-shaped substructures are extremely susceptible to corrosion damage in the marine environment, posing a safety hazard. The marine corrosion area can be divided into five areas: the atmospheric zone, the splash zone, the tidal range zone, the full immersion zone, and the sea mud zone. The splash zone and the tidal range zone are subject to strong and frequent wave impacts, and are in a state of alternating dry and wet conditions for a long time. In addition, there are factors such as marine biological attachment, high salt content, and sufficient air oxygen supply. The combined effects of various factors have led to the most serious corrosion of the substructure in the splash tidal range zone, which is the most vulnerable part of the entire structure to corrosion damage. The corrosion protection problem of the substructure in the splash tidal range zone has become a difficult point in the corrosion protection of marine engineering structures.

[0003] Common methods of corrosion protection in wave splash tidal range areas generally include coating protection and electrochemical protection. Among them, although the coating protection method can isolate the lower structure from the external environment, the coatings used generally have defects such as flammable, harmful or toxic, which have an adverse impact on the marine ecological environment. In addition, the concrete is covered by the coating, and defects are difficult to detect. The electrochemical protection method uses the principle of electrochemistry and requires an external current or a sacrificial anode device. The maintenance cost is relatively high, and the anode device needs to be replaced regularly. It cannot properly solve the corrosion problem caused by the attachment of marine organisms.

[0004] Based on the above technical problems, the applicant proposes an assembled marine concrete substructure anti-corrosion device. Utility Model Content

[0005] The purpose of the utility model is to provide an assembled marine concrete substructure anti-corrosion device to solve the technical problems mentioned in the background technology. The purpose of the utility model is achieved through the following technical solutions:

[0006] An assembled marine concrete substructure anti-corrosion device comprises a protective plate, which is attached to the outer side of the marine concrete substructure by adhesive, and covers the tidal range and splash zone of the marine concrete substructure. A joint is left between two adjacent protective plates, and the adhesive is filled in the joint. The outer side of the joint is covered with a sealing strip, and both the protective plate and the sealing strip are made of glass.

[0007] Furthermore, the marine concrete lower structure is a pier, and a plurality of protective plates form a tubular structure that is shaped like the pier.

[0008] Furthermore, the adhesive protrudes from the upper and lower ends of the tubular structure.

[0009] Furthermore, the width of the joint seam is 5-10 mm, and the width of the sealing strip is 5-10 times the width of the joint seam.

[0010] Furthermore, the glass is PVB or SGP laminated glass, the thickness of the glass is 6.38-20 mm, and the thermal expansion coefficient of the glass is 6-13×10 -6 / ℃.

[0011] Furthermore, the thickness of the adhesive is 5-10 mm, and the adhesive is a two-component epoxy resin soft adhesive.

[0012] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages:

[0013] 1. The glass protective plate and sealing strip are coated on the outside of the marine concrete substructure by adhesive, so as to isolate the tidal range and wave splash area of ​​the marine concrete substructure from the external environment, effectively blocking the contact between seawater and the wave splash tidal range area of ​​the substructure, thereby improving the anti-corrosion performance of the marine concrete substructure and extending the service life of the marine concrete substructure; at the same time, it can prevent marine organisms from attaching to and eroding the marine concrete substructure, and even if marine organisms are attached to this device, they can be easily cleaned.

[0014] 2. Epoxy resin glue has high strength, peeling resistance, impact resistance, and simple construction process. The device can achieve a certain strength and flexibility by bonding with epoxy resin glue, which can buffer the impact of waves and floating objects on the lower structure of marine concrete, reduce the damage of the lower structure of marine concrete, and also leave a certain space for the deformation and expansion of the concrete of the lower structure of marine concrete; the stress distribution of the epoxy resin glue bonding surface is uniform, and there is no thermal effect and deformation on the concrete; the epoxy resin glue itself can also repair concrete surface defects and seal concrete surface cracks. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0016] Figure 1 This is a schematic diagram of the structure of Example 1 of the present application;

[0017] Figure 2 This is a cross-sectional schematic diagram of Example 1 of the present application;

[0018] Figure 3 This is a schematic diagram of a protective plate and a sealing strip according to Example 1 of the present application;

[0019] Figure 4 This is a schematic diagram of the structure of Example 2 of the present application;

[0020] Figure 5 This is a cross-sectional schematic diagram of Example 2 of the present application;

[0021] Figure 6 This is a schematic diagram of the protective plate and sealing strip of Example 2 of the present application.

[0022] Markings in the attached figure: 1. protective plate; 2. sealing strip; 3. adhesive; 4. marine concrete substructure. DETAILED DESCRIPTION

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the drawings and specific implementation methods of the specification. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] like Figure 1-6 An assembled marine concrete substructure anti-corrosion device shown includes a protective plate 1. Two protective plates 1 are attached to the outer side of a marine concrete substructure 4 by an adhesive 3. The protective plate 1 covers the tidal range and splash zone of the marine concrete substructure 4. A joint is left between two adjacent protective plates. A sealing strip 2 is fixed to the outer side of the joint by an adhesive 3. Both the protective plate 1 and the sealing strip 2 are made of glass.

[0025] Example 1

[0026] like Figure 1-3As shown, the marine concrete substructure 4 is a circular concrete pier, and the diameter of the circular concrete pier is 400mm. The cross-section of the protective plate 1 is semicircular, and the curvature radius of the inner side of the protective plate 1 is 210mm. The two protective plates 1 are coaxially wrapped around the outer side of the circular concrete pier, and a 5mm wide joint is left at the joint of the two protective plates 1. A 10mm gap is left between the inner wall of the protective plate 1 and the outer wall of the circular concrete pier, and the gap is filled with adhesive 3, that is, the protective plate 1 and the protected circular concrete pier are connected together using adhesive 3. The sealing strip 2 is fixed at the joint of the two protective plates 1 by adhesive 3. The sealing strip 2 is an arc plate, and the curvature radius of the inner side of the sealing strip 2 is equal to the curvature radius of the outer side of the protective plate 1. The width of the sealing strip 2 is 10 times the width of the joint, the length of the sealing strip 2 is equal to the height of the protective plate 1, the thickness of the adhesive 3 between the sealing strip 2 and the protective plate 1 is 5mm, and the left and right sides of the sealing strip 2 are sealed by adhesive 3.

[0027] The protective plate 1 extends from -0.5m below the bottom of the tidal range to +0.5m above the top of the splash zone, completely covering the area of ​​the circular concrete pier that needs corrosion protection. The bottom and top of the protective plate 1 are covered with a circle of adhesive 3 applied around the circular concrete pier to seal the circular concrete pier, so as to isolate the protected area of ​​the circular concrete pier from the external environment. The protective plate 1 and the sealing strip 2 are both double-layer PVB laminated glass. The total thickness of the laminated glass is 6.38mm, and the thermal expansion coefficient of the glass is 9.0×10 -6 / ℃, which is similar to the thermal expansion coefficient of the protected circular concrete pier.

[0028] Adhesive 3 is a two-component epoxy resin soft adhesive, component A is bisphenol A epoxy resin, component B is a polyetheramine curing agent, the optimal storage temperature is 8-21°C, it is mixed before use, the volume ratio of resin to curing agent is 2:1, and it is cured at room temperature. It is resistant to seawater and weathering and can be used in underwater humid environments. It can achieve a certain strength and flexibility to ensure a firm connection between the glass and the cylindrical surface.

[0029] As a non-crystalline material, inorganic glass has a wide range of sources, low cost, no pollution, and good chemical stability. Laminated glass made of two or more pieces of glass separated by an intermediate layer has good impact resistance and safety. The embodiment of the present application is made of laminated glass, which has the advantages of low cost, weathering resistance, corrosion resistance, long service life without replacement, and no impact on the marine ecological environment. It can also withstand certain impacts of waves and floating objects. Even if the device is subjected to a strong impact, it can be safely shattered, not easy to hurt people, and easy to replace. The thermal expansion coefficient of the glass material is at the same level as that of concrete, and it can also ensure that the expansion and contraction deformation caused by temperature changes will not affect the durability of the device and the lower structure.

[0030] In addition, among the many factors that affect the durability of marine concrete structures, marine biological corrosion is one of the more common ones. The embodiments of the present application can prevent marine organisms from attaching to and corroding the lower structure while effectively isolating seawater. Even if marine organisms attach to the device, since the device is made of glass, it is corrosion-resistant and easy to clean.

[0031] Example 2

[0032] like Figure 4-6 As shown, the marine concrete substructure 4 is a square concrete pier, and the size of the square concrete pier is 400mm×400mm. The cross section of the protective plate 1 is concave, and the outer short side of the protective plate 1 is 225mm long and the outer long side is 460mm long. The two protective plates 1 are symmetrically wrapped around the outer side of the square concrete pier, and a 10mm wide joint is left at the joint of the two protective plates 1. A 10mm gap is left between the inner wall of the protective plate 1 and the outer wall of the square concrete pier, and the gap is filled with adhesive 3, that is, the protective plate 1 and the protected square concrete pier are connected together by adhesive 3. The sealing strip 2 is fixed at the joint of the two protective plates 1 by adhesive 3. The sealing strip 2 is long and the width of the sealing strip 2 is 5 times the width of the joint. The length of the sealing strip 2 is equal to the height of the protective plate 1. The thickness of the adhesive 3 between the sealing strip 2 and the protective plate 1 is 5mm, and the left and right sides of the sealing strip 2 are sealed by adhesive 3.

[0033] The protective plate 1 extends from -0.5m below the bottom of the tidal range to +0.5m above the top of the splash zone, completely covering the area of ​​the square concrete pier that needs corrosion protection. The bottom and top of the protective plate 1 are covered with a circle of adhesive 3 applied around the square concrete pier to seal the square concrete pier, so as to isolate the protected area of ​​the square concrete pier from the external environment. The protective plate 1 and the sealing strip 2 are both double-layer SGP laminated glass. The total thickness of the laminated glass is 20mm, and the thermal expansion coefficient of the glass is 9.0×10 -6 / ℃, which is similar to the thermal expansion coefficient of the protected square concrete pier.

[0034] Adhesive 3 is a two-component epoxy resin soft adhesive, component A is bisphenol F epoxy resin, component B is a polyamide curing agent, the optimal storage temperature is 8-21°C, and it is mixed before use. The volume ratio of epoxy resin to curing agent is 2:1. It is cured at room temperature and has the characteristics of being resistant to seawater and weathering, and can be used in underwater humid environments. It can achieve a certain strength and flexibility to ensure a firm connection between the glass and the surface of the square column.

[0035] As a non-crystalline material, inorganic glass has a wide range of sources, low cost, no pollution, and good chemical stability. Laminated glass made of two or more pieces of glass separated by an intermediate layer has good impact resistance and safety. The embodiment of the present application is made of laminated glass, which has the advantages of low cost, weathering resistance, corrosion resistance, long service life without replacement, and no impact on the marine ecological environment. It can also withstand certain impacts of waves and floating objects. Even if the device is subjected to a strong impact, it can be safely shattered, not easy to hurt people, and easy to replace. The thermal expansion coefficient of the glass material is at the same level as that of concrete, and it can also ensure that the expansion and contraction deformation caused by temperature changes will not affect the durability of the device and the lower structure.

[0036] In addition, among the many factors that affect the durability of marine concrete structures, marine biological corrosion is one of the more common ones. The embodiments of the present application can prevent marine organisms from attaching to and corroding the lower structure while effectively isolating seawater. Even if marine organisms attach to the device, since the device is made of glass, it is corrosion-resistant and easy to clean.

[0037] The construction method of the anti-corrosion device in the embodiment of the present application is:

[0038] First, use tools such as casing to isolate the underwater area of ​​the marine concrete substructure from seawater; then polish the concrete surface of the protected part, clean up the dust and loose attachments on the surface, and keep the concrete surface dry; finally, attach the protective plate to the outside of the marine concrete substructure with adhesive, and attach the sealing strip to the joint of the protective plate with adhesive, and use adhesive to seal the upper and lower ends of the protective plate. The ambient temperature during construction is 23-25℃.

[0039] The wave splash tidal range area of ​​the marine concrete substructure is isolated from the external environment by protective plates, sealing strips and adhesives, which can effectively block the seawater and prevent marine organisms from attaching to and eroding the substructure. The glass material has a wide range of sources and stable chemical properties, and has the advantages of low cost, weathering resistance, corrosion resistance, long-term service without replacement, and no impact on the marine ecological environment. The high impact strength of laminated glass and the certain flexibility of the adhesive can also resist the impact of buffering waves and floating objects on the substructure. The adhesive itself can also play a role in repairing concrete surface defects and sealing concrete surface cracks. It can be seen that the embodiments of the present application can effectively protect the marine concrete substructure, significantly improve the corrosion resistance of the marine concrete substructure, and extend the service life of the marine concrete substructure.

[0040] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0041] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An assembled marine concrete substructure anti-corrosion device, characterized in that: It includes a protective plate, which is attached to the outer side of the marine concrete lower structure by adhesive, and covers the tidal range and splash zone of the marine concrete lower structure. A joint is left between two adjacent protective plates, and a sealing strip is fixed at the joint by adhesive. The protective plate and the sealing strip are both made of glass.

2. The assembled marine concrete substructure anti-corrosion device according to claim 1 is characterized in that: The marine concrete lower structure is a pier, and a plurality of the protective plates form a tubular structure that is shaped like the pier.

3. The assembled marine concrete substructure anti-corrosion device according to claim 2 is characterized in that: The adhesive protrudes from the upper and lower ends of the tubular structure.

4. The assembled marine concrete substructure anti-corrosion device according to claim 1 is characterized in that: The width of the joint seam is 5-10 mm, and the width of the sealing strip is 5-10 times the width of the joint seam.

5. The assembled marine concrete substructure anti-corrosion device according to claim 1, characterized in that: The glass is PVB or SGP laminated glass, the thickness of the glass is 6.38-20 mm, and the thermal expansion coefficient of the glass is 6-13×10 -6 / ℃.

6. The assembled marine concrete substructure anti-corrosion device according to claim 1, characterized in that: The thickness of the adhesive is 5-10 mm, and the adhesive is a two-component epoxy resin soft glue.

Images