A corrosion-resistant weathering steel-seawater sand concrete column component and construction method

Abstract

The invention discloses a corrosion-resistant weathering steel-seawater sea sand concrete column component and a construction method, which relate to the field of marine engineering structures. The scheme significantly improves the corrosion resistance, erosion resistance and impact resistance through multi-layer protection and modular design. The protective column component adopts a design combining prefabricated cement sleeves, fillers and corrosion-resistant weathering steel support ribs to form a multi-layer protection mechanism under the long-term impact of waves. After the matrix is ​​partially eroded and lost, the support ribs and fillers can continuously provide protection and are automatically replenished by the fillers to ensure long-term use. The force unloading design of the matrix and the filler consumes energy step by step, and secondary support is achieved by combining the deformation of the prefabricated cement sleeve with the core body to improve the impact resistance. In addition, the protective column component utilizes the flow characteristics of seawater to form a high water potential buffer zone, reduce the erosion force, and protect the safety of the core structure. The scheme has a simple structure and convenient maintenance and is suitable for long-term marine environment applications.

Description

Technical Field

[0001] The invention relates to the field of marine structural components, and in particular to a corrosion-resistant weathering steel-seawater sand concrete column component and a construction method. Background Art

[0002] The use of seawater and sea sand is to solve the problem of river sand resource shortage, especially for coastal military defense works, which often present a large demand for resources. Using local materials to build defense works can greatly save the cost of long-distance transportation. Using local materials to cast column components can achieve large-scale rapid defense construction. However, using seawater and sea sand as materials has a great corrosive effect on traditional steel, so that the strength of the formed column components often decays too quickly to meet the needs of use.

[0003] Currently, corrosion-resistant weathering steel can solve this problem, but the chloride ions in seawater will affect the hydration reaction of cement. Chloride ions may react with calcium in cement hydration products to form water-soluble calcium chloride, thereby reducing the strength of the concrete itself. Even if corrosion-resistant weathering steel is used as a material, the overall structural strength is maintained, but the concrete on its surface is more likely to fall off due to erosion caused by seawater than conventional concrete, resulting in a further reduction in overall strength.

[0004] Currently, most column structures on seawater directly resist erosion through a multi-layer approach, which makes it difficult to repair the outer surface of the column itself after erosion and damage. In addition, such columns are prone to irreparable damage if a ship collides with them, making them unable to meet usage requirements. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that seawater and sea sand concrete is more susceptible to surface damage such as erosion and is difficult to repair, and to propose a corrosion-resistant weathering steel-seawater and sea sand concrete column component and construction method.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a corrosion-resistant weathering steel-seawater sand concrete column component, comprising a prefabricated column component and a plurality of protective column components distributed around the prefabricated column component, the prefabricated column component comprising a support column and cement piers and a base integrally formed at both ends thereof, the cement pier being provided with a plurality of embedded sleeves;

[0007] The protective column component comprises a prefabricated core body and a plurality of prefabricated cement sleeves stacked outside the core body, and fillers are arranged inside the prefabricated cement sleeves;

[0008] The prefabricated cement sleeve comprises a base body and supporting ribs integrally formed therein.

[0009] As a further description of the above technical solution: the support column includes a column body and a main support body and reinforcing ribs integrally cast therein, and the reinforcing ribs are located outside the main support body.

[0010] As a further description of the above technical solution: the prefabricated column component also includes hanging ears arranged at the four corners of the cement pier.

[0011] As a further description of the above technical solution: the bottom end of the prefabricated core is fixed in the embedded sleeve, and the prefabricated core includes a metal tube and a cement coating fixed on the surface thereof.

[0012] As a further description of the above technical solution: the prefabricated cement sleeve also includes a groove and a boss arranged at the top and bottom ends of the base, and the boss and the groove of two adjacent prefabricated cement sleeves are in a chimeric shape.

[0013] As a further description of the above technical solution: the support ribs are located close to the inner wall in the base body, and the support ribs are arranged in a mesh shape.

[0014] As a further description of the above technical solution: the support ribs, main support body, reinforcing ribs and metal pipes are all corrosion-resistant weathering steel, and the cement piers, columns and bases are all seawater sand concrete.

[0015] As a further description of the above technical solution: one-third of the top end of the metal pipe is higher than the stacking height of the prefabricated cement sleeve, and the area is not covered with cement coating.

[0016] As a further description of the above technical solution: A method for constructing a corrosion-resistant weathering steel-seawater sand concrete column component comprises the following steps:

[0017] S1. Transport the prefabricated column components by lifting equipment and accurately lay them at the predetermined sea area;

[0018] S2, sleeve the bottom end of the prefabricated core into the embedded sleeve;

[0019] S3, stacking a number of prefabricated cement sleeves in sequence with the prefabricated core as the axis;

[0020] S4, detecting and correcting the axial position of the prefabricated cement sleeve and the prefabricated core;

[0021] S5. Fill the filler into the prefabricated cement sleeve.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] In this solution, the impact of waves is blocked by the outer layer of protective column components. Based on the arc-shaped side walls of the protective column components, the gaps are narrow in the middle and flared on both sides. The waves impact the outer sides of several protective column components, causing seawater to flow into the gaps in the impact direction. Limited seawater passes through the gaps into the inner sides of several protective column components and forms a high water potential on the inner sides. The high water potential flows out from the gaps of multiple protective column components in the non-wave impact direction. The outflowing high water potential water flow laterally impacts the diverted waves, so that the lateral impact of the impact water flow of waves or swells on other directions can be reduced. At the same time, the undercurrent below the water surface can also form a high water potential. If the flow rate of the undercurrent is sufficient, it can weaken the impact of the waves. This method not only forms a slow-flowing protective high water potential water flow on the surface of the prefabricated column components, but also reduces the erosion of the protective column components in multiple directions.

[0024] At the same time, the protection column components of this scheme have a unique design. Under long-term wave erosion, the matrix of the prefabricated cement sleeve is partially lost until the internal support ribs are exposed. The support ribs are made of corrosion-resistant weathering steel materials, which can resist seawater corrosion, and the mesh structure can greatly reduce the erosion of seawater. When used for a long time, the area that is severely eroded will have local matrix penetration, and the support ribs are directly exposed to seawater. At this time, the seawater in the area that is often eroded by seawater directly impacts the filler, and the filler unloads force through the gap. With the impact of years, the stones in the filler are eroded and consumed. At this time, the filler above can be supplemented under the action of gravity, so that it can ensure long-term and continuous erosion protection;

[0025] Furthermore, under long-term erosion, the filler will get stuck, making it impossible to replenish it continuously. This solution is achieved by setting up a prefabricated core that fits the filler. The prefabricated core column is a tough metal tube, and one-third of its length is directly exposed. It will sway under the strong wind on the sea. While the top of the metal tube sways under the action of the wind, it contacts the filler through the cement coating on the surface and applies a reciprocating extrusion force, so that the filler placed for many years can keep flowing downward, avoiding cavities due to erosion and no filler replenishment. At the same time, it can keep the filler more compact under extrusion, thereby improving the effect of resisting wave impact.

[0026] At the same time, this solution can carry out maintenance on the whole when necessary, such as before the fortification is used. The prefabricated column components that have been placed for many years are protected from erosion and damage by the external protective column components. When necessary, the prefabricated cement sleeves of the corresponding height can be directly replaced and the filler can be supplemented. This method not only meets the needs of long-term offshore settings, but also is simple and convenient to maintain.

[0027] This scheme is based on the safety needs of the fortification and has high anti-collision performance. If a ship collides, the protective column component is located outside the prefabricated column component. When the protective column component is collided, the prefabricated core is in a vertical support and applies a supporting force to the filler. The impact force is unloaded by the filler after overcoming the gravity clamping of the adjacent prefabricated cement sleeve. When the prefabricated cement sleeve is displaced, the filler inside it is displaced at the same time, and the filler rubs on the surface of the cement coating. The prefabricated core and the prefabricated cement sleeve are axially misaligned. The prefabricated core has good toughness and is not easy to break. The cement coating on its surface can avoid its friction and fracture, realizing the energy consumption and unloading of the impact force. At the same time, when the impact force is large, the arc surface of the prefabricated cement sleeve and the internal filler enable it to rotate under the impact force, guide the ship to change direction during rotation, further unload the force, and achieve good anti-collision performance;

[0028] If a large special impact ship appears, the above method cannot completely unload the force. The precast cement sleeve will contact the precast column component when the axial position of the precast core is displaced to a certain extent, so that one side of it is directly supported. The precast cement sleeve achieves buffering by deforming itself and squeezing the internal filler. If the deformation is large, based on the axial dislocation distance between the precast cement sleeve and the precast core, the precast core is pressed when the deformation is large, which plays a combined support role and avoids causing greater damage to the precast column component. In summary, this scheme is not only simple in structure, but also can achieve better defense effect, and has high application value as a coastal fortification.

[0029] The structure adopted in this scheme is an overall assembly design of prefabricated parts. The output of the split production is large, and the overall structure is simple and the laying efficiency is high. It not only realizes the rapid mass production of local materials at the seaside, but also enables the rapid large-scale construction of coastal fortifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0031] Figure 2 It is a three-dimensional schematic diagram of the prefabricated column component of the present invention;

[0032] Figure 3 It is a cross-sectional schematic diagram of a part of the structure of the present invention;

[0033] Figure 4 It is a structural schematic diagram of the prefabricated core of the present invention;

[0034] Figure 5 It is a cross-sectional schematic diagram of the prefabricated cement sleeve of the present invention;

[0035] Figure 6 It is a schematic cross-sectional view of a part of the protective column component of the present invention;

[0036] Figure 7This is a schematic diagram of the change of the prefabricated cement sleeve of the present invention when subjected to a large impact force;

[0037] Figure 8 This is a schematic diagram of the flow direction principle of the wave impact in one direction of the present invention;

[0038] Fig. 9 It is a schematic diagram of the flow field of the wave impact of the present invention;

[0039] Fig.10 It is a schematic diagram of the deployment of three types of protection column components from left to right in the present invention;

[0040] Fig.11 It is a schematic diagram of the principle of weakening sea waves under the action of undercurrent of the present invention;

[0041] Fig.12 This is a diagram showing an embodiment of installing an offshore platform according to the present invention.

[0042] Legend:

[0043] 10. Prefabricated column components; 11. Cement piers; 12. Support columns; 121. Columns; 122. Main support bodies; 123. Reinforcement ribs; 13. Base; 14. Pre-buried casing; 15. Lifting lugs;

[0044] 20. Protective column component; 21. Prefabricated core; 211. Metal pipe; 212. Cement covering; 22. Prefabricated cement sleeve; 221. Base; 222. Support rib; 223. Groove; 224. Boss;

[0045] 30. Filler. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0047] like Figure 1 - Fig.12 As shown, the present invention provides: a corrosion-resistant weathering steel-seawater sea sand concrete column component, comprising a prefabricated column component 10 and a plurality of protective column components 20 distributed around the prefabricated column component 10, the prefabricated column component 10 comprising a support column 12 and cement piers 11 and a base 13 integrally formed at both ends thereof, and a plurality of embedded sleeves 14 are arranged on the cement pier 11;

[0048] The protective column component 20 includes a prefabricated core 21 and a plurality of prefabricated cement sleeves 22 stacked outside the core, and a filler 30 is arranged inside the prefabricated cement sleeves 22;

[0049] The prefabricated cement sleeve 22 includes a base 221 and support ribs 222 integrally formed therein.

[0050] Specifically, Figure 3 As shown, the support column 12 includes a column body 121 and a main support body 122 and reinforcing ribs 123 integrally cast therein, wherein the reinforcing ribs 123 are located outside the main support body 122 .

[0051] The main support body 122 is located inside the column 121 and plays the main supporting role. At the same time, the outer reinforcing ribs 123 are close to the surface of the column 121, which can improve the adhesion of the surface concrete and enhance its structural strength to ensure the strength under long-term use.

[0052] Specifically, Figure 2 As shown, the prefabricated column component 10 further includes hanging ears 15 arranged at the four corners of the cement pier 11.

[0053] The provision of the lifting lug 15 facilitates suspension installation, thereby increasing the convenience and safety of construction.

[0054] Specifically, Figure 3 As shown, the bottom end of the prefabricated core 21 is fixed in the embedded sleeve 14, and the prefabricated core 21 includes a metal tube 211 and a cement coating 212 fixed on the surface thereof.

[0055] The cement coating 212 is located on the surface of the metal pipe 211, which can protect the surface of the metal pipe 211 and prevent the filler 30 from wearing it due to long-term contact with it. At the same time, it can provide a buffer for the shaking of the metal pipe 211. When impacted, the cement coating 212 can break under extrusion, thereby improving the sliding characteristics of the surface of the metal pipe 211 and avoiding damage to the metal pipe 211 during the extrusion process, which leads to a reduction in supporting strength.

[0056] Specifically, Figure 5 As shown, the prefabricated cement sleeve 22 also includes a groove 223 and a boss 224 arranged at the top and bottom ends of the base 221, and the boss 224 and the groove 223 of two adjacent prefabricated cement sleeves 22 are in a chimeric shape.

[0057] A groove 223 and a boss 224 are respectively provided on both sides of the base 221. When the prefabricated cement sleeves 22 are stacked, the boss 224 and the groove 223 of two adjacent prefabricated cement sleeves 22 are interlocked, so that they can be quickly positioned and kept stable, which is convenient for installation.

[0058] Specifically, Figure 6 As shown, the support ribs 222 are arranged in a mesh shape in the base 221 close to the inner wall. The support ribs 222 are arranged in a mesh shape, which can prevent the internal filler 30 from leaking directly and provide support.

[0059] The supporting ribs 222, the main supporting body 122, the reinforcing ribs 123 and the metal pipe 211 are all made of corrosion-resistant weathering steel, and the cement pier 11, the column 121 and the base 221 are all made of seawater sand concrete.

[0060] By selecting corrosion-resistant weathering steel as the overall metal material, the influence of chloride ions in seawater and sea sand materials on their strength can be avoided. In addition, the overall concrete uses seawater and sea sand as mixing materials, which can achieve local material utilization, meet the needs of large-scale rapid construction in coastal areas, and solve the problem of shortage of river sand resources.

[0061] Specifically, Figure 1 As shown, one-third of the top end of the metal pipe 211 is higher than the stacking height of the prefabricated cement sleeve 22 , and the area is not covered by the cement coating 212 .

[0062] The top of the metal pipe 211 extends beyond the cement sleeve and can be directly exposed to the air. This area is not covered with cement and can sway with the sea breeze. Especially under strong winds, it has a sufficient swing amplitude, which can make the filler 30 tighter under vibration and facilitate the filler 30 to maintain downward fluidity.

[0063] A method for constructing a corrosion-resistant weathering steel-seawater sand concrete column component comprises the following steps:

[0064] The prefabricated column components 10 are transported by lifting equipment and accurately laid to the predetermined sea area location;

[0065] The bottom end of the prefabricated core 21 is sleeved in the embedded sleeve 14;

[0066] A plurality of prefabricated cement sleeves 22 are sequentially stacked with the prefabricated core 21 as the axis;

[0067] Detect and correct the axial position of the prefabricated cement sleeve 22 and the prefabricated core 21;

[0068] The filler 30 is filled into the prefabricated cement sleeve 22 .

[0069] In this solution, the impact of the waves is blocked by the outer protective column component 20. Based on the arc-shaped side walls of the protective column component 20, the gap is narrow in the middle and widened on both sides, such as Fig. 9 As shown, the sea waves impact the outer sides of several protective column components 20, so that the seawater in the gaps in the impact direction is poured in, and the limited seawater passes through the gaps into the inner sides of several protective column components 20, and forms a high water potential inside them, and the high water potential flows out from the gaps of multiple protective column components 20 in the non-sea wave impact direction, and the outflowing high water potential water flow laterally impacts the diverted sea waves, so that the lateral impact of the impact water flow of the sea waves on other directions can be reduced, as shown in FIG. Figure 8As shown, the undercurrent below the water surface can also form a high water potential. If the undercurrent has a sufficient flow rate, it can weaken the impact of the waves. This method not only forms a slow-flowing protective high water potential water flow on the surface of the prefabricated column component 10, but also can reduce the erosion of the protective column component 20 in multiple directions. Fig.11 As shown;

[0070] From the above, it can be seen that this solution solves the problem that the traditional offshore structure is prone to peeling of the base 221 and failure of the supporting structure under long-term wave impact and seawater corrosion. This solution sets an outer protective column component 20, and uses a multi-layer protective structure of the base 221 of the prefabricated cement sleeve 22, internal filler 30, and corrosion-resistant weathering steel support ribs 222, so that after local erosion and loss, the support ribs 222 and filler 30 can still provide effective anti-erosion protection, and long-term protection is achieved through the automatic replenishment mechanism of the filler 30, which solves the problem of the destruction of the entire system due to the failure of a single structure in the prior art. The traditional solution mainly solves how to prevent the occurrence of erosion. This solution uses the method of consuming fillers 30 under the premise of relatively common building materials to ensure a longer period of use.

[0071] The protective column component 20 has a unique design. Under long-term wave erosion, the base 221 of the prefabricated cement sleeve 22 is partially eroded and lost until the internal support ribs 222 are exposed. The support ribs 222 are made of corrosion-resistant weathering steel material, which can resist seawater corrosion, and the mesh structure can greatly reduce the erosion of seawater. When used for a long time, the area that is severely eroded will have a local base 221 penetrated, leaving only the support ribs 222 directly exposed to the seawater. At this time, the impact force of seawater erosion passes through the support ribs 222 and directly impacts the filler 30. The filler 30 unloads the force through the gap, and with the impact over the years, the stones in the filler 30 are eroded and consumed. At this time, the filler 30 above can be replenished under the action of gravity, so that it can ensure long-term and continuous erosion protection. Figure 5 and Figure 6 As shown;

[0072] At the same time, the scheme can use the kinetic energy of the waves to provide lateral protection through the overall layout design. When the adjacent protection column components 20 are hit by the waves, the diverted waves will cause secondary erosion of the surrounding protection column components 20. By introducing part of the waves and forming a high water potential, the other protection column components 20 except those in the direction of wave impact can be protected. The outflowing water can weaken the water flow of secondary erosion, thereby achieving a protective effect.

[0073] At the same time, the erosion effect of underwater undercurrents can increase the water potential, thereby weakening the impact of oncoming waves in some cases.

[0074] Furthermore, under long-term erosion, the filler 30 may get stuck, making it impossible to continuously replenish it. In this solution, a prefabricated core 21 is provided to fit the filler 30, and the column 121 of the prefabricated core 21 is a tough metal tube 211, and one-third of its length is directly exposed. It will sway under the strong wind on the sea surface. While the top of the metal tube 211 sways under the action of the wind, it contacts the filler 30 through the cement coating 212 on the surface and applies a reciprocating extrusion force, so that the filler 30 placed for many years can keep flowing downward to fill when the filler 30 below is missing, and at the same time, it can keep the filler 30 more compact under extrusion, avoid excessive gaps, and improve the effect of resisting wave impact.

[0075] At the same time, this solution can maintain the entire structure when necessary, such as before the construction is used. The prefabricated column components 10 that have been placed for many years are protected from erosion and damage by the external protective column components 20. When necessary, the prefabricated cement sleeves 22 of the corresponding height can be directly replaced and the filler 30 can be supplemented. This method not only meets the needs of long-term offshore settings, but also is simple and convenient to maintain.

[0076] The offshore components in the prior art are often not easy to maintain. Once damaged, they need to be replaced as a whole or partially repaired. However, after the partial repair, the overall strength is often not restored, and the only way to achieve is to avoid further strength reduction. In addition, the traditional repair is difficult, the maintenance cycle is long, and the cost is high. This solution uses modular design to divide the protective column component 20 into independently replaceable prefabricated cement sleeves 22, and cooperates with the filler 30 replenishment mechanism, which greatly simplifies the maintenance process, reduces the maintenance cost and difficulty, and meets the needs of long-term use.

[0077] At the same time, the filler 30 is easy to replenish. By checking the height of the filler 30, the erosion situation at that position can be understood, so that the layout of the fortification can be optimized in a targeted manner.

[0078] This solution is based on the safety needs of the fortification and has high anti-collision performance. If a ship collides, the protective column component 20 is located outside the prefabricated column component 10. When the protective column component 20 is collided, the prefabricated core 21 is in a vertical support and applies a supporting force to the filler 30. The impact force is unloaded by the filler 30 after overcoming the gravity clamping of the adjacent prefabricated cement sleeve 22. When the prefabricated cement sleeve 22 is displaced, the filler 30 inside it is displaced at the same time, and the filler 30 rubs on the surface of the cement coating 212. The prefabricated core 21 and the prefabricated cement sleeve 22 are axially misaligned. The prefabricated core 21 has good toughness and is not easy to break. The cement coating 212 on its surface can avoid its friction and breakage, realizing the energy consumption and unloading of the impact force. At the same time, when the impact force is large, the arc surface of the prefabricated cement sleeve 22 and the filler 30 inside enable it to rotate under the impact force, guide the ship to change direction during rotation, further unload the force, and achieve good anti-collision performance.

[0079] If a large special purpose collision vessel occurs, the above method cannot completely relieve the force (such as Figure 7 The precast cement sleeve 22 will contact the precast column member 10 when the axial position of the precast core 21 is displaced to a certain extent, so that one side of it is directly supported. The precast cement sleeve 22 achieves buffering by deforming itself and squeezing the internal filler 30. If the deformation is large, based on the axial dislocation distance between the precast cement sleeve 22 and the precast core 21, the precast core 21 is pressed when the deformation is large, so as to play a combined support (such as Figure 7 As shown in L3 in the figure), it is possible to avoid causing serious damage to the prefabricated column member 10. In summary, this solution is not only simple in structure, but also can achieve better defense effect, and has a high application value as a coastal fortification;

[0080] The solution proposed in this invention can selectively arrange corresponding protection column components 20 in a specified direction according to actual needs, so as to realize one-way protective fortification construction and meet the needs of simple fortification construction in non-critical areas.

[0081] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A corrosion-resistant weathering steel-seawater sand concrete column component, comprising a prefabricated column component (10) and a plurality of protective column components (20) distributed around the prefabricated column component (10), characterized in that: The prefabricated column component (10) comprises a support column (12), and cement piers (11) and a base (13) integrally formed at both ends of the support column (12), wherein a plurality of pre-buried sleeves (14) are provided on the cement pier (11); The protective column component (20) comprises a prefabricated core (21) and a plurality of prefabricated cement sleeves (22) stacked outside the core, and a filler (30) is arranged inside the prefabricated cement sleeves (22); The prefabricated cement sleeve (22) comprises a base (221) and support ribs (222) integrally formed therein; The bottom end of the prefabricated core (21) is fixed in the embedded sleeve (14), and the prefabricated core (21) is composed of a metal tube (211) and a cement coating (212) fixed on its surface; One third of the top end of the metal tube (211) is higher than the stacking height of the prefabricated cement sleeve (22), and the area is not covered by the cement coating (212).

2. The corrosion-resistant weathering steel-seawater sand concrete column member according to claim 1, characterized in that: The support column (12) comprises a column body (121) and a main support body (122) and reinforcing ribs (123) integrally cast therein, wherein the reinforcing ribs (123) are located outside the main support body (122).

3. The corrosion-resistant weathering steel-seawater sand concrete column member according to claim 1, characterized in that: The prefabricated column component (10) further comprises lifting ears (15) arranged at the four corners of the cement pier (11).

4. The corrosion-resistant weathering steel-seawater sand concrete column member according to claim 1, characterized in that: The prefabricated cement sleeve (22) comprises a groove (223) and a boss (224) at the top and bottom ends of a base (221), and the boss (224) and groove (223) of adjacent prefabricated cement sleeves (22) are interlocked.

5. The corrosion-resistant weathering steel-seawater sand concrete column member according to claim 1, characterized in that: The supporting ribs (222) are located on the inner wall of the base (221) and have a mesh structure.

6. The corrosion-resistant weathering steel-seawater sand concrete column member according to claim 5, characterized in that: The support ribs (222), the main support body (122), the reinforcing ribs (123) and the metal pipe (211) are all made of corrosion-resistant weathering steel, and the cement pier (11), the column (121) and the base (221) are all made of seawater and sea sand concrete.

7. A method for constructing a corrosion-resistant weathering steel-seawater sand concrete column component, using a corrosion-resistant weathering steel-seawater sand concrete column component according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. transporting the prefabricated column component (10) by means of a lifting device and accurately laying it at a predetermined sea area location; S2, sleeve the bottom end of the prefabricated core (21) into the embedded sleeve (14); S3, stacking a plurality of prefabricated cement sleeves (22) in sequence with the prefabricated core (21) as the axis; S4, detecting and correcting the axial position of the prefabricated cement sleeve (22) and the prefabricated core (21); S5, filling the filler (30) into the prefabricated cement sleeve (22).

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