A reinforcing cage hoisting point reinforcing structure and reinforcing cage

Abstract

The utility model relates to the field of cast-in-place pile construction technology discloses a reinforcing cage lifting point reinforcing structure and reinforcing cage. The reinforcing cage lifting point reinforcing structure is arranged on the reinforcing cage body, the reinforcing cage body includes longitudinal main reinforcement, reinforcing hoop and hoop reinforcement, the lifting point reinforcing node includes first reinforcing steel and second reinforcing steel, the first reinforcing steel is along the axial arrangement and is welded fixed with longitudinal main reinforcement and reinforcing hoop, the second reinforcing steel is across arranged on both sides of reinforcing hoop along the axial and is welded fixed with first reinforcing steel and reinforcing hoop respectively, the lifting point reinforcing support is arranged in the inside of reinforcing hoop and includes reinforcing steel. The reinforcing cage includes a plurality of segments, the segment upper end is provided with reinforcing cage lifting point reinforcing structure. The application through the synergies of lifting point reinforcing node and lifting point reinforcing support, the structural strength and rigidity of reinforcing cage lifting point are improved significantly, effectively prevent reinforcing cage from separating, deforming in the hoisting process, be applicable to the hoisting construction of all kinds of reinforcing cage.

Description

Technical Field

[0001] This utility model relates to the field of cast-in-place pile construction technology, and in particular to a reinforcement structure for a steel cage lifting point and a steel cage. Background Technology

[0002] In the construction of cast-in-place piles, the steel cage is an important component of the piles, and its construction quality directly affects the overall construction quality of the piles. However, due to its heavy weight and insufficient rigidity, the steel cage is prone to deformation during fabrication, hoisting, transportation, and lowering.

[0003] Currently, the hoisting of large steel reinforcement cages generally employs the method of adding internal bracing to increase the overall rigidity of the cage. Existing technologies, such as CN208023558U (A Novel Steel Reinforcing and Fixing Device for Steel Reinforcing Cages), disclose a reinforcing and fixing device including cross-shaped reinforcing bars and reinforcing cage hoops; CN224016353U (A Recyclable Pile Foundation Steel Reinforcing Cage Stabilizing Triangular Bracing Structure), disclose a triangular bracing structure including a first support part, a second support part, an adjustment part, and a fastening part. However, these methods do not adequately consider the hoisting position. During hoisting, due to stress concentration, the main reinforcement bars at the hoisting point are still prone to detachment and deformation from the reinforcing hoops. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of low connection strength of steel cage hoisting points in the existing technology, and to provide a steel cage hoisting point reinforcement structure and steel cage.

[0005] In one aspect, this utility model provides a reinforcing structure for lifting points of a steel cage, which is disposed on the body of the steel cage. The body of the steel cage includes longitudinal main bars, reinforcing hoops, and stirrups. The reinforcing hoops are disposed inside the longitudinal main bars, and the stirrups are disposed outside the longitudinal main bars. The steel cage also includes lifting point reinforcing nodes and lifting point reinforcing supports.

[0006] The lifting point reinforcement node includes a first reinforcing bar and a second reinforcing bar. The first reinforcing bar is arranged along the axial direction of the reinforcing cage body, and is welded and fixed to the longitudinal main reinforcing bar along its entire length, with its end welded and fixed to the reinforcing hoop. The second reinforcing bar is arranged along the axial direction of the reinforcing cage body and spans across both sides of the reinforcing hoop, and is welded and fixed to the first reinforcing bar and the reinforcing hoop.

[0007] The lifting point reinforcement brace is located inside the reinforcing hoop, and the lifting point reinforcement brace includes reinforcing steel bars. One end of the reinforcing steel bar is welded and fixed to the second reinforcing steel bar of the reinforcing hoop or the lifting point reinforcement node.

[0008] Through the above technical solution, the first reinforcing bar forms a double welded connection with the longitudinal main bar and the reinforcing hoop, and the second reinforcing bar spans across both sides of the reinforcing hoop and connects all the first reinforcing bars into one, effectively dispersing the concentrated stress at the lifting point; the reinforcing bar forms a support inside the reinforcing hoop, further enhancing the deformation resistance of the reinforcing hoop at the lifting point.

[0009] Furthermore, the diameter of the first reinforcing bar is the same as the diameter of the reinforcing hoop to ensure welding strength and structural consistency.

[0010] Furthermore, two first reinforcing bars are provided, one on each side of the reinforcing hoop along the axial direction of the reinforcing cage body, and the middle of the second reinforcing bar is connected to the reinforcing hoop. This forms a symmetrical force-bearing structure, making the force on the lifting point more balanced.

[0011] Furthermore, the length of the first reinforcing bar is greater than or equal to five times its own diameter, and the length of the second reinforcing bar is greater than or equal to twice the length of the first reinforcing bar. This dimensional limitation ensures that the welded anchorage length meets the stress requirements.

[0012] Furthermore, the diameter of the second reinforcing bar is greater than or equal to the diameter of the first reinforcing bar to ensure that the second reinforcing bar spanning both sides of the reinforcing hoop has sufficient structural strength.

[0013] Furthermore, the lifting point reinforcement nodes are configured in multiple ways, spaced apart along the circumference of the reinforcing hoop. The arrangement of multiple lifting point reinforcement nodes allows for the selection of different lifting point positions during hoisting, improving construction flexibility.

[0014] Furthermore, the lifting point reinforcement nodes are configured as three, evenly spaced along the circumference of the reinforcing hoist. The equidistant distribution of the three lifting points enables stable lifting.

[0015] Furthermore, there are three reinforcing bars, and the two ends of each of the three reinforcing bars are welded and fixed to the second reinforcing bars of the two adjacent lifting point reinforcing nodes, forming a triangular support structure in the plane of the reinforcing hoop. The triangular support structure has excellent geometric stability and can significantly improve the overall stiffness of the reinforcing hoop at the lifting point position.

[0016] In another aspect, this utility model provides a reinforcing cage, including a reinforcing cage body, the reinforcing cage body comprising several segments, and each segment having a reinforcing cage lifting point structure as described above at its upper end.

[0017] Furthermore, in the reinforcement structure of the uppermost segment of the steel cage body, two reinforcing hoops are provided. By adding reinforcing hoops, the load-bearing capacity of the uppermost node is further strengthened, meeting the construction requirements for hoisting after segmented extension.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. The reinforcing structure for lifting points of a steel cage provided by the first aspect of this utility model has the following advantages: By welding and fixing the first reinforcing bar to the longitudinal main bars and the reinforcing hoop, a load transfer path from the lifting point to the main bars and the reinforcing hoop is established in the axial direction of the steel cage. At the same time, the second reinforcing bar is laid across both sides of the reinforcing hoop along the axial direction and connects each of the first reinforcing bars into one unit. This allows the concentrated load acting on the lifting point during lifting to be distributed and transferred to a wider range along the axial direction, effectively avoiding stress concentration at a single welded joint and significantly reducing the local stress peak of the reinforcing hoop at the lifting point. On this basis, the lifting point reinforcing brace set inside the reinforcing hoop forms a support constraint on the inner wall of the reinforcing hoop, improving the bending stiffness and local buckling resistance of the reinforcing hoop at the lifting point position. This ensures that the steel cage maintains overall structural stability and does not undergo irreversible deformation during dynamic construction processes such as lifting, aerial flipping, and lowering. This fundamentally solves the prominent problems of easy cracking of traditional lifting point welded joints and local deformation of the reinforcing hoop.

[0020] 2. The steel cage provided according to the second aspect of this utility model has the following advantages: the above-mentioned lifting point reinforcement structure is configured at the reinforcing hoop at the upper end of each segment, and each segment of the entire steel cage has reliable lifting point bearing capacity, which facilitates construction personnel to flexibly assemble according to the site conditions, and improves construction adaptability and lifting safety. Attached Figure Description

[0021] Figure 1 This is a partial schematic diagram of a lifting point reinforcement node in a steel cage lifting point reinforcement structure.

[0022] Figure 2 This is a plan view of a steel cage suspension point reinforcement structure.

[0023] Figure 3 This is a partial schematic diagram of the lifting point reinforcement node of a lifting point reinforcement structure at the top of a steel cage.

[0024] Figure 4 This is a three-dimensional view of the top of a steel cage.

[0025] Figure 5 This is an elevation view of the top of a steel cage.

[0026] The markings in the diagram are: 1-reinforcing cage body, 11-longitudinal main reinforcement, 12-reinforcing hoop, 13-hoop, 2-lifting point reinforcement node, 21-first reinforcement, 22-second reinforcement, 3-reinforcing reinforcement. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0028] Example 1 like Figure 1 and Figure 2 As shown, this embodiment provides a reinforcing structure for lifting points of a steel cage, which is installed on the steel cage body 1. The steel cage body 1 includes longitudinal main bars 11, reinforcing hoops 12, and stirrups 13. The reinforcing hoops 12 are located inside the longitudinal main bars 11, and the stirrups 13 are located outside the longitudinal main bars 11. The longitudinal main bars 11 extend axially along the steel cage body 1. The reinforcing hoops 12 are located inside the steel cage body 1 and are arranged circumferentially along the steel cage body 1 to maintain the cross-sectional shape of the steel cage body 1 and improve the overall rigidity of the steel cage body 1. The steel cage also includes lifting point reinforcing nodes 2 and lifting point reinforcing supports.

[0029] A lifting point reinforcement node 2 is provided at the lifting point position of the reinforcing cage body 1. The lifting point reinforcement node 2 includes a first reinforcing bar 21 and a second reinforcing bar 22. The first reinforcing bar 21 is arranged along the axial direction of the reinforcing cage body 1. The first reinforcing bar 21 is welded and fixed to the longitudinal main reinforcing bar 11, and the end of the first reinforcing bar 21 is welded and fixed to the reinforcing hoop 12. Through the above connection method, the first reinforcing bar 21 can transfer the local stress in the lifting point area to the longitudinal main reinforcing bar 11 and the reinforcing hoop 12, thereby improving the local stiffness at the lifting point position. The second reinforcing bar 22 is arranged along the axial direction of the reinforcing cage body 1 and spans across both sides of the reinforcing hoop 12. The second reinforcing bar 22 is welded and fixed to the first reinforcing bar 21 and the reinforcing hoop 12. Specifically, the second reinforcing bar 22 can extend along the axial direction of the reinforcing cage body 1, and its middle part is connected to the reinforcing hoop 12, so that the second reinforcing bar 22 has a connection length on both sides of the reinforcing hoop 12. After the second reinforcing bar 22 is welded and fixed to the first reinforcing bar 21, it can provide a connection position for the lifting point reinforcement support.

[0030] Specifically, the diameter of the first reinforcing bar 21 is the same as the diameter of the reinforcing hoop 12. Two first reinforcing bars 21 are provided, located on opposite sides of the reinforcing hoop 12 along the axial direction of the reinforcing cage body 1. Both first reinforcing bars 21 are welded and fixed to the same longitudinal main reinforcing bar 11, and the end of each first reinforcing bar 21 closest to the reinforcing hoop 12 is welded and fixed to the reinforcing hoop 12. The second reinforcing bar 22 is simultaneously welded and fixed to both first reinforcing bars 21 and the reinforcing hoop 12, so that the lifting point reinforcement node 2 forms a relatively balanced reinforcement structure on both sides of the reinforcing hoop 12.

[0031] Specifically, the length of the first reinforcing bar 21 is 5 times its own diameter, and the length of the second reinforcing bar 22 is equal to 2 times the length of the first reinforcing bar 21. This dimensional arrangement ensures that the first and second reinforcing bars 21 and 22 have sufficient weldable connection length and load-bearing length. The diameter of the second reinforcing bar 22 is equal to the diameter of the first reinforcing bar 21.

[0032] Specifically, the lifting point reinforcement brace is located inside the reinforcing hoop 12. The lifting point reinforcement brace includes a reinforcing steel bar 3, one end of which is welded and fixed to the second reinforcing steel bar 22 or the reinforcing hoop 12. Thus, the lifting point reinforcement brace does not only support the reinforcing hoop 12 alone, but also forms a connection with the lifting point reinforcement node 2 through the second reinforcing steel bar 22. This allows the lifting load at the lifting point to be transferred through the first reinforcing steel bar 21, the second reinforcing steel bar 22, the reinforcing hoop 12, and the reinforcing steel bar 3, reducing stress concentration at the lifting point. At the same time, the reinforcing steel bar can prevent deformation of the reinforcing cage during transportation and storage.

[0033] In some embodiments, multiple lifting point reinforcement nodes 2 are provided, and these nodes are evenly spaced along the circumference of the reinforcing hoop 12. When two symmetrically distributed lifting point reinforcement nodes 2 are provided, the lifting point reinforcement bracing can be provided with three reinforcing bars 3 arranged in a triangular or H-shape, or four reinforcing bars 3 arranged in a square or cross shape, thereby ensuring the balance of forces on the reinforcing cage during hoisting. The two ends of the reinforcing bars 3 are welded and fixed to the second reinforcing bar 22 or the reinforcing hoop 12 according to structural requirements, so that adjacent lifting point reinforcement nodes 2 are connected by reinforcing bars 3, thereby forming a support system inside the reinforcing hoop 12.

[0034] Specifically, in this embodiment, three lifting point reinforcement nodes 2 are provided, and the three lifting point reinforcement nodes 2 are equally spaced along the circumference of the reinforcing hoop 12. The lifting point reinforcement support includes three reinforcing steel bars 3, which form a triangular support structure inside the reinforcing hoop 12. The triangular support structure can improve the deformation resistance of the reinforcing hoop 12 and reduce the risk of elliptical deformation or torsional deformation of the reinforcing cage body 1 during hoisting, transportation or movement.

[0035] Example 2 This embodiment provides a reinforcing cage, including a reinforcing cage body 1. The reinforcing cage body includes longitudinal main bars 11, reinforcing hoops 12 and stirrups 13. The reinforcing cage body 1 includes several segments, and the upper end of each segment is provided with a reinforcing cage lifting point structure as described in Embodiment 1.

[0036] like Figures 3 to 5As shown, in some embodiments, when the steel cage is long and heavy, there are two reinforcing hoops 12 at the uppermost end of the steel cage suspension point reinforcement structure of the steel cage body 1. At this time, the first steel bar 21 is set on both sides of the two reinforcing hoops 12, the second steel bar 22 spans across both sides of the two reinforcing hoops 12, and three reinforcing steel bars 3 can be set, with both ends connected to the reinforcing hoops 12 to form a triangular support.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A reinforcing structure for lifting points of a steel cage, disposed on the main body (1) of the steel cage, characterized in that, The steel cage body (1) includes longitudinal main bars (11), reinforcing hoops (12) and stirrups (13). The reinforcing hoops (12) are located inside the longitudinal main bars (11), and the stirrups (13) are located outside the longitudinal main bars (11). It also includes: The lifting point reinforcement node (2) includes a first reinforcing bar (21) and a second reinforcing bar (22). The first reinforcing bar (21) is arranged along the axial direction of the reinforcing cage body (1). The first reinforcing bar (21) is welded and fixed to the longitudinal main reinforcing bar (11) along its entire length, and the end of the first reinforcing bar (21) is welded and fixed to the reinforcing hoop (12). The second reinforcing bar (22) is arranged along the axial direction of the reinforcing cage body (1) and spans across both sides of the reinforcing hoop (12). The second reinforcing bar (22) is welded and fixed to the first reinforcing bar (21) and the reinforcing hoop (12). The lifting point reinforcement brace is located inside the reinforcing hoop (12). The lifting point reinforcement brace includes a reinforcing steel bar (3). One end of the reinforcing steel bar (3) is welded and fixed to the second reinforcing steel bar (22) of the reinforcing hoop (12) or the lifting point reinforcement node (2).

2. The steel cage lifting point reinforcement structure according to claim 1, characterized in that, The diameter of the first reinforcing bar (21) is the same as the diameter of the reinforcing hoop (12).

3. The steel cage lifting point reinforcement structure according to claim 1, characterized in that, The first reinforcing bar (21) is set to two, and the two first reinforcing bars (21) are respectively located on both sides of the reinforcing hoop (12) along the axial direction of the reinforcing cage body (1), and the middle part of the second reinforcing bar (22) is correspondingly connected to the reinforcing hoop (12).

4. The steel cage lifting point reinforcement structure according to claim 1, characterized in that, The length of the first reinforcing bar (21) is greater than or equal to 5 times its own diameter, and the length of the second reinforcing bar (22) is greater than or equal to 2 times the length of the first reinforcing bar (21).

5. A steel cage lifting point reinforcement structure according to claim 1, characterized in that, The diameter of the second reinforcing bar (22) is greater than or equal to the diameter of the first reinforcing bar (21).

6. The steel cage lifting point reinforcement structure according to claim 1, characterized in that, The lifting point reinforcement node (2) is set in multiple places and is set at intervals around the circumference of the reinforcement hoop (12).

7. A steel cage lifting point reinforcement structure according to claim 6, characterized in that, The lifting point reinforcement node (2) is set to three, and is set at equal intervals along the circumference of the reinforcement hoop (12).

8. A steel cage lifting point reinforcement structure according to claim 7, characterized in that, There are three reinforcing bars (3). The two ends of the three reinforcing bars (3) are welded and fixed to the second reinforcing bars (22) of the two adjacent lifting point reinforcing nodes (2), forming a triangular support structure in the plane of the reinforcing hoop (12).

9. A reinforcing cage, comprising a reinforcing cage body (1), wherein the reinforcing cage body (1) comprises a plurality of segments, characterized in that, Each segment is provided with a steel cage suspension point reinforcement structure as described in any one of claims 1-8 at its upper end.

10. A reinforcing cage according to claim 9, characterized in that, In the reinforcement structure of the uppermost segment of the steel cage body (1), there are two reinforcing hoops (12).

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