A sandwich structure reinforced concrete composite component
By setting interface trapezoidal structure and steel bars between regenerated aggregate high-strength and high-tough concrete and ordinary concrete, the problem of poor shear connection within the composite component is solved, and the high integrity and performance improvement of the composite component is achieved.
Patent Information
- Application Number
- CN202421352586.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The internal shear connection between the composite components composed of existing recycled aggregates high-strength and high-tough concrete and ordinary concrete is poor, and the combination effect and overall performance are low.
Sandwich structural reinforced concrete composite components are adopted, and the interface trapezoidal structure is set between the high-strength and high-tough concrete layer of recycled aggregate and the ordinary concrete layer, and connected steel bars are set in the composite components to enhance the interface shear strength.
It effectively improves the interface shear strength between high-strength and high-tough concrete of recycled aggregate and ordinary concrete, ensures the integrity of the composite components, and improves the high bearing capacity, high durability and service time limit of the composite components.
Smart Images
Figure CN222745428U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building materials, in particular to a sandwich structure reinforced concrete composite component. Background Art
[0002] The demolition of old buildings and structures will generate a large amount of construction solid waste such as concrete, bricks, stones, mortar and tiles. Among them, waste concrete accounts for more than 50% of construction solid waste. Most of the waste concrete is disposed of by traditional methods such as open-air stacking and landfill, which not only occupies a large amount of land, but also causes great harm to the environment and personal safety. High-strength and high-toughness concrete is a new type of concrete structural material with both high / ultra-high compressive strength and ultra-high tensile deformation capacity. However, during the production process of high-strength and high-toughness concrete, it is necessary to mine high-quality natural sand and gravel resources such as fine quartz sand, which causes serious deterioration of the natural environment. A large number of existing high-strength and high-toughness concretes use waste concrete to reprocess recycled aggregate as raw materials to generate recycled aggregate high-strength and high-toughness concrete. However, the composite components composed of recycled aggregate high-strength and high-toughness concrete and ordinary concrete have poor combination effects, and there is a low shear strength between recycled aggregate high-strength and high-toughness concrete and ordinary concrete, and the integrity of the composite components cannot be guaranteed.
[0003] Therefore, it is hoped that a sandwich structure reinforced concrete composite member can solve the problems existing in the prior art. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a sandwich structure reinforced concrete composite component, in which an interface trapezoidal structure is arranged between recycled aggregate high-strength and high-toughness concrete and connecting steel bars are arranged in the composite component, aiming to solve the problems of poor internal shear connection, low combination effect and overall performance of the existing composite components composed of recycled aggregate high-strength and high-toughness concrete and ordinary concrete.
[0006] (II) Technical solution
[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:
[0008] Provided is a sandwich structure reinforced concrete composite component for building construction, the composite component comprising a recycled aggregate high-strength and high-toughness concrete layer, a common concrete layer and steel bars arranged in the recycled aggregate high-strength and high-toughness concrete layer and the common concrete layer; the recycled aggregate high-strength and high-toughness concrete layer comprises a first concrete layer and a second concrete layer, the common concrete layer is arranged between the first concrete layer and the second concrete layer, and interface trapezoidal structures are respectively arranged below the first concrete layer and above the second concrete layer, for improving the interface shear strength between the recycled aggregate high-strength and high-toughness concrete layer and the common concrete layer.
[0009] The utility model arranges steel bars as interface shear connectors in the sandwich structure reinforced concrete composite component, and arranges an interface trapezoidal structure between the recycled aggregate high-strength and high-toughness concrete layer and the ordinary concrete layer to improve the interface shear strength, effectively exert the mechanical properties of the recycled aggregate high-strength and high-toughness concrete, and ensure the integrity of the composite component.
[0010] Preferably, the interface trapezoidal structure includes: a first interface trapezoidal structure and a second interface trapezoidal structure, the first interface trapezoidal structure and the second interface trapezoidal structure are both trapezoidal, the long bottom sides of the first interface trapezoidal structure respectively connect the bottom of the first concrete layer and the top of the second concrete layer, and the short bottom sides of the second interface trapezoidal structure respectively connect the bottom of the first concrete layer and the top of the second concrete layer.
[0011] Preferably, the long base of the first interface trapezoidal structure is the same length as the long base of the second interface trapezoidal structure, the short base of the first interface trapezoidal structure is the same length as the short base of the second interface trapezoidal structure, and the height of the first interface trapezoidal structure is the same length as the height of the second interface trapezoidal structure.
[0012] Preferably, the first interface trapezoidal structures are arranged in pairs and mirror images with the horizontal line in the middle of the ordinary concrete layer as the axis, and the paired first interface trapezoidal structures are arranged at equal intervals at a preset distance; the second interface trapezoidal structures are also arranged in pairs and mirror images with the horizontal line in the middle of the ordinary concrete layer as the axis, and the paired second interface trapezoidal structures are also arranged at equal intervals at the preset distance.
[0013] Preferably, the first interface trapezoidal structure and the second interface trapezoidal structure are arranged at equal intervals.
[0014] Preferably, the steel bar includes a first horizontal stress-bearing bar and a second horizontal stress-bearing bar, the first horizontal stress-bearing bar is arranged in the first concrete layer along a horizontal direction, and the second horizontal stress-bearing bar is arranged in the second concrete layer along a horizontal direction.
[0015] Preferably, the steel bar also includes stirrups, the top end of which passes through the center position of the first interface trapezoidal structure below the first concrete layer and is connected to the first horizontal force-bearing reinforcement, and the bottom end of the stirrup passes through the center position of the first interface trapezoidal structure above the second concrete layer and is connected to the second horizontal force-bearing reinforcement.
[0016] Preferably, the stirrups are perpendicular to the first horizontal force-bearing bars and the second horizontal force-bearing bars, and the stirrups are arranged in parallel at equal intervals at the preset distance.
[0017] Preferably, the first concrete layer and the second concrete layer have the same thickness.
[0018] (III) Beneficial effects
[0019] The beneficial effects of the utility model are as follows: recycled aggregate high-strength and high-toughness concrete is used as the outer layers on both sides of the composite component, ordinary concrete is poured in the middle to form a sandwich-type composite component, and steel bars and interface trapezoidal structures are used to improve the interface shear strength between the recycled aggregate high-strength and high-toughness concrete and the ordinary concrete, and the first interface trapezoidal structure is used to ensure that the stirrups will not separate from the recycled aggregate high-strength and high-toughness concrete, thereby effectively exerting the mechanical properties of the recycled aggregate high-strength and high-toughness concrete, ensuring the integrity of the composite component, and achieving high bearing capacity, high durability and service life of the composite component, providing important technical support for the high performance and sustainable development of infrastructure structures. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a front cross-sectional view of the sandwich structure reinforced concrete composite member of the utility model;
[0021] [Reference Signs]
[0022] 1: First concrete layer;
[0023] 2: Ordinary concrete layer;
[0024] 3: Second concrete layer;
[0025] 4: First horizontal force reinforcement;
[0026] 5: Second horizontal reinforcement;
[0027] 6: stirrups;
[0028] 7: first interface trapezoidal structure;
[0029] 8: The second interface trapezoidal structure. DETAILED DESCRIPTION
[0030] In order to better explain the utility model and facilitate understanding, the utility model is described in detail below with reference to the accompanying drawings and through specific implementation methods. Figure 1 The orientation is used as a reference.
[0031] The utility model provides a sandwich structure reinforced concrete composite component, in which an interface trapezoidal structure is arranged between recycled aggregate high-strength and high-toughness concrete and connecting steel bars are arranged in the composite component, aiming to solve the problems of poor internal shear connection, low combination effect and overall performance of the existing composite components composed of recycled aggregate high-strength and high-toughness concrete and ordinary concrete.
[0032] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0033] Embodiment 1:
[0034] Reference Figure 1 The length, width and height of the sandwich structure reinforced concrete composite component are 1500mm, 400mm and 200mm respectively. The composite component includes a first concrete layer 1, an ordinary concrete layer 2, a second concrete layer 3, a first horizontal force-bearing reinforcement 4, a second horizontal force-bearing reinforcement 5 and stirrups 6. The thickness of the first concrete layer 1 and the second concrete layer 3 is 50mm. The material of the ordinary concrete layer 2 is C40 concrete, and the thickness of the ordinary concrete layer 2 is 100mm. The ordinary concrete layer 2 is arranged between the first concrete layer 1 and the second concrete layer 3. Interface trapezoidal structures are respectively arranged below the first concrete layer 1 and above the second concrete layer 3, which are used to improve the interface shear strength between the recycled aggregate high-strength and high-toughness concrete layer and the ordinary concrete layer 2.
[0035] The interface trapezoidal structure includes: a first interface trapezoidal structure 7 and a second interface trapezoidal structure 8, wherein the first interface trapezoidal structure 7 and the second interface trapezoidal structure 8 are both trapezoidal, the long bottom side of the first interface trapezoidal structure 7 is respectively connected to the lower side of the first concrete layer 1 and the upper side of the second concrete layer 3, and the short bottom side of the second interface trapezoidal structure 8 is respectively connected to the lower side of the first concrete layer 1 and the upper side of the second concrete layer 3. The long bottom side of the first interface trapezoidal structure 7 and the long bottom side of the second interface trapezoidal structure 8 are the same in length, both of which are 30 mm, the short bottom side of the first interface trapezoidal structure 7 and the short bottom side of the second interface trapezoidal structure 8 are the same in length, both of which are 20 mm, and the height of the first interface trapezoidal structure 7 and the height of the second interface trapezoidal structure 8 are the same in length, both of which are 15 mm.
[0036] The first interface trapezoidal structures 7 are arranged in pairs and mirror images with the horizontal line in the middle of the ordinary concrete layer 2 as the axis, and each pair of the first interface trapezoidal structures 7 are arranged at an equal distance of 200 mm; the second interface trapezoidal structures 8 are also arranged in pairs and mirror images with the horizontal line in the middle of the ordinary concrete layer 2 as the axis, and each pair of the second interface trapezoidal structures 8 are also arranged at an equal distance of 200 mm.
[0037] The second interface trapezoidal structure 8 and the first interface trapezoidal structure 7 are arranged at equal intervals, and the distance between the first interface trapezoidal structure 7 and the second interface trapezoidal structure 8 adjacent to the left and right is 100 mm.
[0038] Four first horizontal stress-bearing bars 4 with a diameter of 12 mm are arranged in the horizontal direction in the first concrete layer 1 , and four second horizontal stress-bearing bars 5 with a diameter of 12 mm are arranged in the horizontal direction in the second concrete layer 3 .
[0039] The diameter of the stirrup 6 is 8 mm, the top of the stirrup 6 passes through the center of the first interface trapezoidal structure 7 below the first concrete layer 1 and connects the first horizontal force-bearing bar 4, and the bottom of the stirrup 6 passes through the center of the first interface trapezoidal structure 7 above the second concrete layer 3 and connects the second horizontal force-bearing bar 5. The stirrup 6 is perpendicular to the first horizontal force-bearing bar 4 and the second horizontal force-bearing bar 5, and the stirrups 6 are arranged side by side at an equal interval of 200 mm.
[0040] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0041] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0042] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.
[0043] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. A sandwich structure reinforced concrete composite member for building construction, characterized in that: The composite component comprises a recycled aggregate high-strength and high-toughness concrete layer, a common concrete layer (2), and steel bars arranged in the recycled aggregate high-strength and high-toughness concrete layer and the common concrete layer (2); the recycled aggregate high-strength and high-toughness concrete layer comprises a first concrete layer (1) and a second concrete layer (3), the common concrete layer (2) is arranged between the first concrete layer (1) and the second concrete layer (3), and interface trapezoidal structures are respectively arranged below the first concrete layer (1) and above the second concrete layer (3) to improve the interface shear strength between the recycled aggregate high-strength and high-toughness concrete layer and the common concrete layer.
2. The sandwich structure reinforced concrete composite member according to claim 1, characterized in that: The interface trapezoidal structure comprises: a first interface trapezoidal structure (7) and a second interface trapezoidal structure (8); the first interface trapezoidal structure (7) and the second interface trapezoidal structure (8) are both trapezoidal; the long bottom side of the first interface trapezoidal structure (7) is respectively connected to the bottom of the first concrete layer (1) and the top of the second concrete layer (3); and the short bottom side of the second interface trapezoidal structure (8) is respectively connected to the bottom of the first concrete layer (1) and the top of the second concrete layer (3).
3. The sandwich structure reinforced concrete composite member according to claim 2, characterized in that: The long base of the first interface trapezoidal structure (7) and the long base of the second interface trapezoidal structure (8) are of the same length, the short base of the first interface trapezoidal structure (7) and the short base of the second interface trapezoidal structure (8) are of the same length, and the height of the first interface trapezoidal structure (7) and the height of the second interface trapezoidal structure (8) are of the same length.
4. The sandwich structure reinforced concrete composite member according to claim 3, characterized in that: The first interface trapezoidal structures (7) are arranged in pairs and mirror images with the horizontal line in the middle of the ordinary concrete layer (2) as the axis, and the paired first interface trapezoidal structures (7) are arranged at equal intervals at a preset distance; the second interface trapezoidal structures (8) are also arranged in pairs and mirror images with the horizontal line in the middle of the ordinary concrete layer (2) as the axis, and the paired second interface trapezoidal structures (8) are also arranged at equal intervals at the preset distance.
5. The sandwich structure reinforced concrete composite member according to claim 4, characterized in that: The first interface trapezoidal structure (7) and the second interface trapezoidal structure (8) are arranged at equal intervals.
6. The sandwich structure reinforced concrete composite member according to claim 5, characterized in that: The steel bars comprise first horizontal stress-bearing bars (4) and second horizontal stress-bearing bars (5), wherein the first horizontal stress-bearing bars (4) are arranged in the first concrete layer (1) along the horizontal direction, and the second horizontal stress-bearing bars (5) are arranged in the second concrete layer (3) along the horizontal direction.
7. The sandwich structure reinforced concrete composite member according to claim 6, characterized in that: The steel bar further comprises stirrups (6), the top end of the stirrups (6) passing through the center position of the first interface trapezoidal structure (7) below the first concrete layer (1) and connected to the first horizontal force-bearing reinforcement (4), and the bottom end of the stirrups (6) passing through the center position of the first interface trapezoidal structure (7) above the second concrete layer (3) and connected to the second horizontal force-bearing reinforcement (5).
8. The sandwich structure reinforced concrete composite member according to claim 7, characterized in that: The stirrups (6) are perpendicular to the first horizontal force-bearing reinforcement (4) and the second horizontal force-bearing reinforcement (5), and the stirrups (6) are arranged in parallel at equal intervals at the preset distance.
9. The sandwich structure reinforced concrete composite member according to claim 4, characterized in that: The first concrete layer (1) and the second concrete layer (3) have the same thickness.