Reinforced concrete structure with high durability

Abstract

The invention discloses a high-durability reinforced concrete structure, and relates to the technical field of reinforced concrete structures. Comprising four grouting steel pipes parallel to one another, the four sets of grouting steel pipes are evenly distributed in the circumferential direction, and a transverse fixing steel plate is connected between every two adjacent grouting steel pipes; binding steel bars are arranged on the inner sides of the four grouting steel pipes, and concrete is poured; sandwich structures are arranged on the outer sides of the four grouting steel pipes and the transverse fixing steel plates. The steel column filled with concrete outside the reinforced concrete structural member is combined with traditional reinforced concrete with bundled reinforcing steel bars embedded inside, the reinforced concrete structural member is structurally combined, so that the reinforced concrete structural member has the advantages of being good in anti-seismic performance, high in durability, excellent in fire resistance and the like, in addition, by arranging the anti-corrosion layer, the corrosion resistance of the metal member is improved, and the service life of the metal member is prolonged. Meanwhile, under the structural design, the anti-corrosion layer isolates corrosion permeation, the strength of the steel bars and the profile steel components is effectively guaranteed for a long time, damage is avoided, and it is better guaranteed that the reinforced concrete structure has the high durability characteristic.

Description

Technical Field

[0001] This invention relates to the field of reinforced concrete structure technology, and in particular to a highly durable reinforced concrete structure. Background Technology

[0002] In modern construction, steel reinforcement, as the core reinforcing material in concrete structures, directly affects the service life and safety performance of buildings. However, steel reinforcement is prone to corrosion in humid, saline, or chemically corrosive environments, leading to concrete cracking, reduced structural strength, and even safety hazards. This is particularly true in high-risk environments such as offshore platforms and chemical facilities. To ensure the durability of reinforced concrete, appropriate materials must be selected. In modern construction projects, columns, as crucial load-bearing components, directly impact the safety and stability of buildings due to their load-bearing capacity and seismic performance. However, due to long-term use or external environmental influences, columns may suffer damage or fail to meet new load requirements, such as external damage and steel corrosion. Therefore, some buildings utilize reinforced concrete structures, which combine the tensile strength of steel with the compressive strength of concrete, offering excellent seismic performance, high durability, and superior fire resistance. While reinforced concrete structures are a hybrid of steel and concrete, offering high durability, their complex construction process and high cost necessitate a comprehensive selection based on project requirements and economic considerations.

[0003] Given the problems of concrete cracking and steel corrosion leading to reduced structural strength in reinforced concrete, which is the core component of reinforced concrete structures, as well as the complex construction process and high construction cost of reinforced concrete structures, those skilled in the art urgently need to develop a highly durable reinforced concrete structure that can achieve structural stability, high durability, reduced construction complexity, and lower construction costs. Summary of the Invention

[0004] The purpose of this invention is to provide a highly durable reinforced concrete structure to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The present invention provides a high-durability reinforced concrete structure, comprising: Four parallel grouting steel pipes are arranged in a circumferentially even distribution, and each pair of adjacent grouting steel pipes is connected by a transverse fixing steel plate. The inner sides of the four grouting steel pipes are reinforced with binding steel bars and then concrete is poured. A sandwich structure is provided on the outside of the four grouting steel pipes and the transverse fixing steel plate. The sandwich structure is a continuous layer surrounding the outside of the four grouting steel pipes and the transverse fixing steel plate. The sandwich structure is filled with an anti-corrosion layer. The sandwich structure is reinforced with an outer layer of concrete.

[0006] Furthermore, the grouting steel pipe is filled with concrete.

[0007] Furthermore, the transverse fixing steel plates between each pair of adjacent grouting steel pipes are arranged in multiple sets at intervals.

[0008] Furthermore, the concrete poured inside the four grouting steel pipes is confined to the inner position of the transverse fixing steel plate by a template.

[0009] Furthermore, the sidewall of the grouting steel pipe is connected with a pre-embedded anchor rod. The pre-embedded anchor rod is in the shape of a ring and extends towards the center position between the four grouting steel pipes. The pre-embedded anchor rod is welded to the binding steel bar. The pre-embedded anchor rod is a set of multiple sets set on the sidewall of the grouting steel pipe and is evenly distributed at intervals along the axial direction of the grouting steel pipe.

[0010] Furthermore, the sandwich structure includes an outer sleeve fitted over the outside of the grouting steel pipe and a closed steel plate located outside the transverse fixing steel plate; The two sets of outer sleeves on each pair of adjacent sets of grouting steel pipes are connected by the sealing steel plate to form a sandwich structure that surrounds the four grouting steel pipes and the outside of the transverse fixing steel plate.

[0011] Furthermore, interlayer spaces are provided between the outer sleeve and the grouting steel pipe, between the sealing steel plate and the transverse fixing steel plate, and between the concrete inside the transverse fixing steel plate for injecting the anti-corrosion layer.

[0012] Furthermore, two sets of parallel strip-shaped protrusions are provided on the side surface of the grouting steel pipe opposite to the side where the binding steel bar is located. The strip-shaped protrusions are arranged along the axial direction of the grouting steel pipe. Multiple grout leakage holes are opened on the grouting steel pipe between the two sets of strip-shaped protrusions. The multiple grout leakage holes are evenly distributed along the axial direction of the grouting steel pipe. Both sets of strip-shaped protrusions are provided with multiple support rods, the ends of which are used to connect to arc-shaped baffles, which are used to block the grout leakage holes; The arc-shaped baffle is used to support the outer sleeve so that there is an interlayer space between the outer sleeve and the grouting steel pipe for injecting the anti-corrosion layer.

[0013] Furthermore, the concrete injected into the grouting steel pipe overflows from the grout leakage hole and fills the space between the arc-shaped baffle and the two sets of strip-shaped protrusions.

[0014] Furthermore, the anti-corrosion layer is an epoxy resin filler layer.

[0015] The high-durability reinforced concrete structure provided by the present invention, as described above, has the following beneficial effects: This reinforced concrete structure combines steel columns filled with concrete on the outside with traditional reinforced concrete with internally embedded reinforcing bars. This structural integration gives the reinforced concrete structure excellent seismic performance, high durability, and superior fire resistance. In addition, by setting an anti-corrosion layer, the corrosion resistance of the metal components is enhanced. Furthermore, under this structural design, the anti-corrosion layer isolates corrosion penetration, effectively and long-term ensuring the strength of the reinforcing bars and steel components to prevent damage, thus better guaranteeing the high durability of this reinforced concrete structure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 A schematic diagram of a highly durable reinforced concrete structure provided in an embodiment of the present invention; Figure 2 A schematic diagram of a grouting steel pipe for a high-durability reinforced concrete structure provided in an embodiment of the present invention; Figure 3 A front view of a grouting steel pipe for a high-durability reinforced concrete structure provided in an embodiment of the present invention; Figure 4 A highly durable reinforced concrete structure provided in this embodiment of the invention. Figure 1 A magnified view of A in the middle.

[0018] Explanation of reference numerals in the attached figures: 1. Grouting steel pipe; 2. Horizontal fixing steel plate; 3. Reinforcing bar binding; 4. Anti-corrosion layer; 5. Outer concrete layer; 6. Embedded anchor rod; 7. External sleeve; 8. Sealing steel plate; 9. Strip protrusion; 10. Grout leakage hole; 11. Support rod; 12. Arc-shaped baffle. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Please see Figure 1-4 A highly durable reinforced concrete structure, comprising: Four parallel grouting steel pipes 1 are evenly distributed circumferentially. Each pair of adjacent grouting steel pipes 1 is connected by a transverse fixing steel plate 2. This means the four parallel grouting steel pipes 1 and the four sets of transverse fixing steel plates 2 are connected end-to-end and enclose each other, forming a prism structure. Figure 1 The structure shown constitutes the main structure of this highly durable reinforced concrete structure. Four grouting steel pipes 1 are reinforced with reinforcing bars 3 inside and then filled with concrete. Although this structure is a conventional reinforced concrete structure, it is located at the protective center in this structure. While maintaining the stable properties of reinforced concrete, the grouting steel pipes 1 in the outer structure and the external support of the transverse fixing steel plates 2 form a reinforced and stable structure. The outer structure and the reinforced concrete are interconnected to form a whole, significantly improving the load-bearing capacity and seismic performance. It is suitable for various building structures, and the construction is convenient, economical, and efficient. At the same time, it effectively protects the internal reinforcing bars from corrosion risks. A sandwich structure is provided on the outside of the four grouting steel pipes 1 and the transverse fixing steel plate 2. The sandwich structure is a continuous layer surrounding the four grouting steel pipes 1 and the transverse fixing steel plate 2. The sandwich structure is filled with an anti-corrosion layer 4. The sandwich structure mainly serves to inject and protect the anti-corrosion layer 4, as well as the grouting steel pipes 1 and the transverse fixing steel plate 2 inside it. The injected continuous anti-corrosion layer 4 has the function of isolating corrosion, effectively preventing the four grouting steel pipes 1 and the transverse fixing steel plate 2 inside it, as well as the innermost steel bar from being corroded. It also effectively isolates the inward penetration of external corrosion, and overall ensures the stable strength of the steel bars and steel structural components. An outer concrete layer 5 is poured on the outside of the sandwich structure, forming a prism-shaped column structure between it and four parallel grouting steel pipes 1. The outer concrete layer 5 serves as the outermost structure. Even if the outer concrete layer 5 is slightly damaged, it should not affect the stability and high durability of the main structure of this reinforced concrete structure. Therefore, the outer concrete layer 5, as the outermost protective layer, effectively protects the anti-corrosion layer 4 from damage and is not afraid of damage, making it easy to maintain and repair at any time.

[0021] Furthermore, concrete is poured into the grouting steel pipe 1 to form a steel-concrete structure. While possessing the structural strength of the grouting steel pipe 1 itself, the combination of concrete and grouting steel pipe 1 further increases the structural stability and strength.

[0022] Furthermore, the transverse fixing plates 2 between each pair of adjacent grouting steel pipes 1 are arranged in multiple sets at intervals. The interval arrangement of the transverse fixing plates 2 ensures the connection strength between the two grouting steel pipes 1 while also saving construction costs.

[0023] Furthermore, the concrete poured inside the four grouting steel pipes 1 is confined to the inner position of the transverse fixing steel plate 2 by the formwork, thus forming the core of the main structure of the reinforced concrete structure. This is equivalent to the four grouting steel pipes 1 and the transverse fixing steel plate 2 being attached to the outside of the reinforced concrete structure to strengthen and support it, thereby increasing the strength of the reinforced concrete structure. Based on this structure, an anti-corrosion layer 4 is used to isolate the steel bars and steel structure from corrosion.

[0024] Furthermore, pre-embedded anchor rods 6 are connected to the side wall of the grouting steel pipe 1. The pre-embedded anchor rods 6 are in a ring shape and extend towards the center position between the four grouting steel pipes 1. The pre-embedded anchor rods 6 are welded to the binding steel bars 3 or fixed in combination with binding. The pre-embedded anchor rods 6 are multiple sets set on the side wall of the grouting steel pipe 1 and evenly distributed along the axial direction of the grouting steel pipe 1. This allows the pre-embedded anchor rods 6 on the grouting steel pipe 1 to fully combine with the internal binding steel bars 3 to form a stable structural whole. After the concrete is poured, it ensures that the four grouting steel pipes 1 and the transverse fixing steel plate 2 are perfectly combined with the internal reinforced concrete structure to form a stable overall structure with good seismic resistance, durability, and fire resistance.

[0025] Furthermore, the sandwich structure includes an outer sleeve 7 fitted outside the grouting steel pipe 1 and a closed steel plate 8 located outside the transverse fixed steel plate 2. Each pair of adjacent sets of grouting steel pipes 1 has two sets of outer sleeves 7 connected to a closed steel plate 8 to form a sandwich structure that encloses the four grouting steel pipes 1 and the outer side of the transverse fixed steel plate 2. The enclosed structure formed by the sandwich structure can completely cover the four grouting steel pipes 1 and the outer side of the transverse fixed steel plate 2. The outer sleeves 7 and the closed steel plate 8 of the sandwich structure are fixed by welding.

[0026] Furthermore, interlayer spaces are left between the outer sleeve 7 and the grouting steel pipe 1, between the sealing steel plate 8 and the transverse fixing steel plate 2, and between the concrete inside the transverse fixing steel plate 2 for injecting the anti-corrosion layer 4, thereby forming a tight and gapless interlayer structure. The anti-corrosion layer 4 is used to achieve corrosion protection and improve the durability of this reinforced concrete structure.

[0027] Furthermore, in this embodiment, two sets of parallel strip-shaped protrusions 9 are provided on the side surface of the grouting steel pipe 1 opposite to the side where the binding steel bar 3 is located. The strip-shaped protrusions 9 are arranged along the axial direction of the grouting steel pipe 1. Multiple grout leakage holes 10 are opened on the grouting steel pipe 1 between the two sets of strip-shaped protrusions 9. The multiple grout leakage holes 10 are evenly distributed along the axial direction of the grouting steel pipe 1. Multiple support rods 11 are provided on both sets of strip protrusions 9. The ends of the multiple support rods 11 are used to connect to the arc-shaped baffles 12, which are used to block the grout leakage holes 10. The arc-shaped baffle 12 is used to support the outer sleeve 7 so that there is an interlayer space between the outer sleeve 7 and the grouting steel pipe 1 for the injection of the anti-corrosion layer 4.

[0028] Furthermore, the concrete injected into the grouting steel pipe 1 overflows from the grout leakage hole 10 and fills the space between the arc-shaped baffle 12 and the two sets of strip-shaped protrusions 9.

[0029] Specifically, in this embodiment, the two sets of strip-shaped protrusions 9 and the arc-shaped baffle 12 connected and supported by the support rod 11 form a barrier against the overflow of concrete from the grouting steel pipe 1. While the concrete is being poured into the grouting steel pipe 1, it also overflows from multiple leakage holes 10, entering the area between the two sets of strip-shaped protrusions 9, and continuing to overflow into the inner side of the arc-shaped baffle 12, eventually covering the space formed by the two sets of strip-shaped protrusions 9 and the arc-shaped baffle 12, creating a concrete protrusion structure. The arc-shaped baffle 12 can be made of plastic to support the outer sleeve 7. Alternatively, after the concrete protrusion structure is formed, the arc-shaped baffle 12 can be removed, allowing the concrete protrusion structure to support the outer sleeve 7, leaving a space between the outer sleeve 7 and the grouting steel pipe 1 for the injection of the anti-corrosion layer 4. Simultaneously, the concrete protrusion structure formed along the axial direction of the grouting steel pipe 1 acts as a reinforcing rib structure, also strengthening the structural strength of the grouting steel pipe 1.

[0030] Furthermore, the anti-corrosion layer 4 is an epoxy resin filler layer, which forms a stable isolation and anti-corrosion effect after filling.

[0031] In summary, this reinforced concrete structure combines externally filled concrete steel columns with internally embedded reinforcing bars, creating a structurally integrated structure that exhibits excellent seismic performance, high durability, and superior fire resistance. Furthermore, the addition of an anti-corrosion layer enhances the corrosion resistance of the metal components. This structural design also effectively and sustainably prevents corrosion penetration, ensuring the strength of the reinforcing bars and steel components and protecting them from damage, thus further guaranteeing the high durability of this reinforced concrete structure.

[0032] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A highly durable reinforced concrete structure, characterized in that, include: Four parallel grouting steel pipes (1) are evenly distributed in the circumference of the four groups of grouting steel pipes (1), and each pair of adjacent grouting steel pipes (1) is connected by a transverse fixing steel plate (2). The four grouting steel pipes (1) are fitted with binding steel bars (3) on the inside and then concrete is poured. A sandwich structure is provided on the outside of the four grouting steel pipes (1) and the transverse fixing steel plate (2). The sandwich structure is a continuous sandwich structure surrounding the outside of the four grouting steel pipes (1) and the transverse fixing steel plate (2). The sandwich structure is filled with an anti-corrosion layer (4). The outer layer of concrete is poured on the outside of the sandwich structure (5).

2. The high-durability reinforced concrete structure according to claim 1, characterized in that, The grouting steel pipe (1) is filled with concrete.

3. A high-durability reinforced concrete structure according to claim 1, characterized in that, The transverse fixing steel plates (2) between each pair of adjacent grouting steel pipes (1) are arranged in multiple sets at intervals.

4. A high-durability reinforced concrete structure according to claim 1, characterized in that, The concrete poured inside the four grouting steel pipes (1) is confined to the inner position of the transverse fixing steel plate (2) by the formwork.

5. A high-durability reinforced concrete structure according to claim 1, characterized in that, The grouting steel pipe (1) is connected to a pre-embedded anchor rod (6) on its side wall. The pre-embedded anchor rod (6) is in the shape of a ring and extends to the center position between the four grouting steel pipes (1). The pre-embedded anchor rod (6) is welded to the binding steel bar (3). The pre-embedded anchor rod (6) is a set of multiple sets on the side wall of the grouting steel pipe (1) and is evenly distributed at intervals along the axial direction of the grouting steel pipe (1).

6. A high-durability reinforced concrete structure according to claim 2, characterized in that, The sandwich structure includes an outer sleeve (7) sleeved on the outside of the grouting steel pipe (1) and a closed steel plate (8) located on the outside of the transverse fixed steel plate (2). The two sets of outer sleeves (7) on each pair of adjacent sets of grouting steel pipes (1) are connected by the sealing steel plate (8) to form a sandwich structure that surrounds the four grouting steel pipes (1) and the outer side of the transverse fixing steel plate (2).

7. A high-durability reinforced concrete structure according to claim 6, characterized in that, There are interlayer spaces between the outer sleeve (7) and the grouting steel pipe (1), between the sealing steel plate (8) and the transverse fixing steel plate (2), and between the concrete inside the transverse fixing steel plate (2) for grouting the anti-corrosion layer (4).

8. A highly durable reinforced concrete structure according to claim 7, characterized in that, On the side surface of the grouting steel pipe (1) opposite to the side where the binding steel bar (3) is located, there are two sets of parallel strip-shaped protrusions (9). The strip-shaped protrusions (9) are arranged along the axial direction of the grouting steel pipe (1). Multiple grout leakage holes (10) are opened on the grouting steel pipe (1) between the two sets of strip-shaped protrusions (9). The multiple grout leakage holes (10) are evenly distributed along the axial direction of the grouting steel pipe (1). Multiple support rods (11) are provided on both sets of strip protrusions (9). The ends of the multiple support rods (11) are used to connect to arc-shaped baffles (12), which are used to block the grout leakage holes (10). The arc-shaped baffle (12) is used to support the outer sleeve (7) so that there is an interlayer space between the outer sleeve (7) and the grouting steel pipe (1) for grouting the anti-corrosion layer (4).

9. A highly durable reinforced concrete structure according to claim 8, characterized in that, The concrete injected into the grouting steel pipe (1) overflows from the grout leakage hole (10) and fills the space between the arc-shaped baffle (12) and the two sets of strip protrusions (9).

10. A high-durability reinforced concrete structure according to claim 1, characterized in that, The anti-corrosion layer (4) is an epoxy resin filler layer.

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