Double-layer reinforcement cage with positioning function
By combining a double-layer steel cage structure with an epoxy resin coating, the problem of insufficient tensile, bending, and shear resistance of traditional single-layer steel cages under heavy loads is solved, thereby improving the load-bearing capacity and seismic performance of concrete structures and preventing positional displacement and deformation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional single-layer steel cages are insufficient in tensile, bending, and shear resistance when subjected to large loads, which makes concrete structures prone to diagonal cracks and limits the load-bearing capacity and shear performance of the structure.
The structure employs a double-layer steel cage structure, including an outer ring of stirrups and an inner ring of stirrups. A three-dimensional spatial truss is formed by welding reinforcing bars. Combined with top, bottom, and inner and outer ring positioning bars, the structure's stability and impact resistance are enhanced. An epoxy resin coating is applied to the surface of the steel bars to improve corrosion resistance.
It improves the tensile, bending and shear strength of concrete structures, enhances the load-bearing capacity and seismic performance of structures, prevents positional displacement and deformation, ensures the quality of pile foundations, delays crack development and improves durability.
Smart Images
Figure CN224078141U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building construction technology, specifically relating to a double-layer steel cage with positioning function. Background Technology
[0002] A reinforcing cage is a strengthening framework used in concrete structures. It is typically made of steel bars tied or welded according to specific specifications and spacing. Its main function is to improve the load-bearing capacity, bending resistance, and shear resistance of concrete structures. Reinforcing cages are widely used in various concrete structural engineering projects, such as foundation piles, columns, and beams in building construction, and bridge piers, abutments, and pile foundations in bridge engineering. However, existing reinforcing cages still have the following shortcomings:
[0003] Traditional steel cages are generally single-layer steel structures with relatively simple reinforcement quantity and arrangement. When the structure needs to withstand large loads, such as deep foundations of high-rise buildings or piers of large bridges, the tensile and bending resistance provided by a single-layer steel cage may be insufficient, limiting the load-bearing capacity of the structure. The relatively sparse arrangement of stirrups has limited restraint on the concrete. When the structure is subjected to shear force, the concrete is prone to diagonal cracks, which will lead to a decrease in the shear resistance of the structure.
[0004] Therefore, we made improvements and proposed a double-layer steel cage with positioning function. Utility Model Content
[0005] The purpose of this invention is to provide a double-layer steel cage with positioning function to solve the problems of existing traditional steel cages, which are generally single-layer steel structures with relatively simple reinforcement quantity and arrangement. When the structure needs to bear large loads, such as deep foundations of high-rise buildings and piers of large bridges, the tensile and bending resistance provided by a single-layer steel cage may be insufficient, limiting the load-bearing capacity of the structure. The relatively sparse arrangement of stirrups has limited restraint on the concrete. When the structure is subjected to shear force, the concrete is prone to diagonal cracks, which will lead to a decrease in the shear resistance of the structure.
[0006] To solve the above-mentioned technical problems, this utility model provides a double-layer steel cage with positioning function, including a skeleton steel bar, and a reinforcing mechanism is welded on the side wall of the skeleton steel bar;
[0007] The reinforcing mechanism includes an outer ring stirrup, an inner ring stirrup, and a top fixing bar. The outer ring stirrup is welded to the side wall of the skeleton reinforcement, the inner ring stirrup is welded to the side wall of the skeleton reinforcement, and the top fixing bar is welded to the top of the skeleton reinforcement.
[0008] Furthermore, a bottom fixing bar is welded to the bottom of the skeleton reinforcement, and an outer ring positioning bar is welded to the bottom of the bottom fixing bar. There are six outer ring positioning bars, which are distributed circumferentially along the central axis of the bottom fixing bar. A counterweight ball is provided at the bottom of the outer ring positioning bar.
[0009] Furthermore, an inner ring fixing bar is welded inside the inner ring stirrup, and a tapered positioning bar is welded to the bottom of the inner ring fixing bar. There are six tapered positioning bars, which are distributed circumferentially along the central axis of the inner ring fixing bar.
[0010] Furthermore, a fixing column is welded to the top of the top fixing rib, and there are two fixing columns. A lifting ring is welded to the top of the fixing column.
[0011] Furthermore, the internal welding machine of the top fixing rib has three connecting columns, which are distributed circumferentially along the central axis of the top fixing rib. The end of the connecting column away from the top fixing rib is welded with a sonic logging tube.
[0012] Furthermore, the surfaces of the reinforcing bars, top fixing bars, and bottom fixing bars are provided with an anti-corrosion layer, which is an epoxy resin coating.
[0013] Furthermore, the inner side of the outer ring stirrup is welded with reinforcing bars, and the outer side of the inner ring stirrup is welded with reinforcing bars. There are several reinforcing bars, which are evenly distributed along the length of the skeleton reinforcement. The outer ring stirrup and the inner ring stirrup are fixedly connected by the reinforcing bars.
[0014] The beneficial effects of this utility model are:
[0015] 1. Through the reinforcement mechanism, the outer and inner ring stirrups can enhance the pile top's punching shear resistance, constrain the core concrete to improve the pile's bearing capacity, and the double-layer stirrups work together to resist water and soil pressure. They can evenly distribute local loads to the overall skeleton, improving seismic and impact resistance. At the same time, the inner ring constrains the core concrete, and the outer ring constrains the outer layer concrete, forming a gradient constraint effect, delaying crack development and improving ductility. The top fixing bars can make the steel cage structure more stable and provide a platform for subsequent equipment installation.
[0016] 2. By setting bottom fixing bars, outer ring positioning bars and counterweight balls, the bottom fixing bars can make the structure of the steel cage more stable and prevent the cage from deforming. The outer ring positioning bars can fix the overall position of the steel cage and prevent the position of the steel cage from shifting during the pouring. The counterweight balls welded on the outer ring positioning bars can prevent the steel cage from floating up due to the buoyancy of the concrete during the pouring, which would cause the pile top elevation to deviate.
[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0019] Figure 1 A schematic diagram of the structure of the double-layer steel cage with positioning function provided by this utility model;
[0020] Figure 2 A schematic diagram of the overall structure of the double-layer steel cage with positioning function provided by this utility model;
[0021] Figure 3 The double-layer steel cage with positioning function provided by this utility model Figure 2 Enlarged view of point A in the middle;
[0022] Figure 4 The bottom view of the double-layer steel cage with positioning function provided by this utility model.
[0023] In the picture:
[0024] 1. Reinforcing steel frame; 2. Reinforcing mechanism; 3. Bottom fixing bar; 4. Outer ring positioning bar; 5. Counterweight ball; 6. Inner ring fixing bar; 7. Conical positioning bar; 8. Fixing column; 9. Lifting ring; 10. Connecting column; 11. Sonic logging tube; 12. Reinforcing bar; 201. Outer ring stirrup; 202. Inner ring stirrup; 203. Top fixing bar. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] Example:
[0027] like Figures 1 to 4 As shown, the double-layer steel cage with positioning function includes a skeleton steel bar 1, and a reinforcing mechanism 2 is welded on the side wall of the skeleton steel bar 1.
[0028] like Figure 1 , Figure 3 and Figure 4 The reinforcing mechanism 2 shown includes an outer ring stirrup 201, an inner ring stirrup 202, and a top fixing bar 203. The outer ring stirrup 201 is welded to the side wall of the reinforcing cage 1, the inner ring stirrup 202 is welded to the side wall of the reinforcing cage 1, and the top fixing bar 203 is welded to the top of the reinforcing cage 1. In use, after construction is completed, the inner ring stirrup 202 is tightly attached to the inner main reinforcement, forming radial restraint on the core concrete, inhibiting the expansion of the concrete under pressure, and improving the ultimate bearing capacity of the column or pile. The outer ring stirrup 201, as the outer shell of the reinforcing cage, can directly bear lateral earth pressure or construction loads, preventing cage deformation. The top fixing bar 203 can make the reinforcing cage structure more stable and provide a platform for subsequent equipment installation.
[0029] like Figure 1 As shown, the bottom of the reinforcing cage 1 is welded with a bottom fixing bar 3, and the bottom of the bottom fixing bar 3 is welded with an outer ring positioning bar 4. There are six outer ring positioning bars 4, which are distributed circumferentially along the central axis of the bottom fixing bar 3. A counterweight ball 5 is set at the bottom of the outer ring positioning bar 4. In use, the bottom fixing bar 3 can make the structure of the reinforcing cage more stable and prevent the cage from deforming. The outer ring positioning bars 4 can fix the overall position of the reinforcing cage and prevent the position of the reinforcing cage from shifting during the pouring. The counterweight ball 5 welded on the outer ring positioning bars 4 can prevent the reinforcing cage from floating up due to the buoyancy of the concrete during the pouring, which would cause the pile top elevation to deviate.
[0030] like Figure 1 As shown, an inner ring fixing bar 6 is welded inside the inner ring stirrup 202. A tapered positioning bar 7 is welded to the bottom of the inner ring fixing bar 6. There are six tapered positioning bars 7, distributed circumferentially along the central axis of the inner ring fixing bar 6. The tops of the six tapered positioning bars 7 bend towards the center of the inner ring fixing bar 6, and the tops of the six tapered positioning bars 7 are welded together. In use, the tapered positioning bars 7 can fix the center position of the reinforcing cage, preventing positional displacement during casting.
[0031] like Figure 1 As shown, two fixing columns 8 are welded to the top of the top fixing rib 203, and lifting rings 9 are welded to the top of the fixing columns 8. In use, the lifting rings 9 welded on the fixing columns 8 can easily lift the steel cage to the designated position, which is convenient for construction.
[0032] like Figure 1As shown, the internal welding machine of the top fixing bar 203 has connecting columns 10. There are three connecting columns 10, which are distributed circumferentially along the central axis of the top fixing bar 203. The end of the connecting column 10 away from the top fixing bar 203 is welded with an ultrasonic logging tube 11. When the pouring is completed, the ultrasonic testing equipment is placed inside the ultrasonic logging tube 11 to test whether voids, segregation, mud inclusions or cracks have occurred during the pouring of the reinforcing cage, to ensure the quality of the pile foundation, and to optimize the construction effect through data feedback.
[0033] like Figure 1 and Figure 4 As shown, the surfaces of the reinforcing bars 1, the top fixing bars 203, and the bottom fixing bars 3 are coated with an anti-corrosion layer, which is an epoxy resin coating. The epoxy resin coating can protect the surface of the reinforcing bars from corrosion and improve the durability of the reinforcing cage.
[0034] like Figure 3 As shown, reinforcing ribs 12 are welded to the inner side of the outer ring stirrups 201 and to the outer side of the inner ring stirrups 202. Several reinforcing ribs 12 are evenly distributed along the length of the reinforcing cage 1. The outer ring stirrups 201 and inner ring stirrups 202 are fixedly connected by the reinforcing ribs 12. The reinforcing ribs 12 connect the inner and outer ring stirrups 201 by welding or binding, forming a three-dimensional spatial truss. This restricts the lateral displacement of the outer and inner stirrups under concrete pouring or load, preventing overall deformation of the reinforcing cage.
[0035] In summary, when using this double-layer reinforcing cage with positioning function: firstly, the reinforcing cage is hoisted to the location to be poured using the lifting ring 9 welded to the top fixing bar 203. The tapered positioning bar 7 can fix the center position of the reinforcing cage to prevent it from shifting during pouring. The surfaces of the skeleton reinforcing bar 1, the top fixing bar 203, and the bottom fixing bar 3 are covered with an anti-corrosion layer, which is an epoxy resin coating. The epoxy resin coating can protect the surface of the reinforcing bars from corrosion and improve the durability of the reinforcing cage. After the reinforcing cage is fixed, concrete can be poured. During pouring, the outer ring positioning bar 4 can fix the overall position of the reinforcing cage to prevent it from shifting during pouring. The counterweight ball 5 welded to the outer ring positioning bar 4 can prevent the reinforcing cage from floating due to the buoyancy of the concrete during pouring, which would cause the pile top elevation to deviate. After pouring, the inner ring stirrup 202 is tightly attached to the internal main reinforcement, forming a radial constraint on the core concrete, inhibiting the compressive expansion of the concrete, and improving the strength of the column or pile. To limit the bearing capacity, the outer ring stirrups 201, acting as the outer shell of the steel cage, can directly withstand lateral earth pressure or construction loads, preventing cage deformation. The reinforcing bars 12 connect the inner and outer ring stirrups 201 by welding or binding, forming a three-dimensional spatial truss, which restricts the lateral displacement of the outer and inner stirrups under concrete pouring or load action, preventing overall deformation of the steel cage. Finally, ultrasonic testing equipment is placed inside the sonic logging tube 11 to test whether voids, segregation, mud inclusions, or cracks have occurred during the pouring of the steel cage, ensuring the quality of the pile foundation and optimizing the construction effect through data feedback.
[0036] All the devices selected in this application are general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0037] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0039] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A double layer reinforcement cage with positioning function, characterized in that, The utility model relates to a kind of reinforced concrete frame, including: Twelve skeleton steels (1), twelve the side wall of the skeleton steel (1) is welded with reinforcing mechanism (2); The reinforcing mechanism (2) includes outer hoop (201), inner hoop (202) and top fixed bar (203), the outer hoop (201) is welded on the side wall of skeleton steel (1), the inner hoop (202) is welded on the side wall of skeleton steel (1), and the top fixed bar (203) is welded on the top of skeleton steel (1).
2. The double-layer reinforcement cage with positioning function according to claim 1, characterized in that, The bottom of the skeleton steel (1) is welded with bottom fixed bar (3), the bottom of the bottom fixed bar (3) is welded with outer circle positioning bar (4), the number of the outer circle positioning bar (4) is six, and is distributed along the center axis of bottom fixed bar (3) circumference, and the bottom of the outer circle positioning bar (4) is provided with counterweight ball (5).
3. The double layer reinforcement cage with positioning function according to claim 1, characterized in that, The inside of the inner hoop (202) is welded with inner circle fixed bar (6), the bottom of the inner circle fixed bar (6) is welded with conical positioning bar (7), the number of the conical positioning bar (7) is six, and is distributed along the center axis of inner circle fixed bar (6) circumference.
4. The double layer reinforcement cage with positioning function according to claim 1, characterized in that, The top of the top fixed bar (203) is welded with fixed column (8), the number of the fixed column (8) is two, and the top of the fixed column (8) is welded with lifting ring (9).
5. The double layer reinforcement cage with positioning function according to claim 1, wherein, The inside of the top fixed bar (203) is welded with connecting column (10), the number of the connecting column (10) is three, and is distributed along the center axis of top fixed bar (203) circumference, and the end of the connecting column (10) away from top fixed bar (203) is welded with acoustic pipe (11).
6. The double layer reinforcement cage with positioning function according to claim 1, wherein, The surface of the skeleton steel (1), top fixed bar (203) and bottom fixed bar (3) is provided with anticorrosive coating, and the anticorrosive coating is epoxy resin coating.
7. The double layer reinforcement cage with positioning function according to claim 1, wherein, The inside of the outer hoop (201) is welded with reinforcing bar (12), the outside of the inner hoop (202) is welded with reinforcing bar (12), the number of the reinforcing bar (12) is several, and is evenly distributed along the length direction of skeleton steel (1), and the outer hoop (201) and the inner hoop (202) are fixedly connected by reinforcing bar (12).