Round pipe culvert pipe joint reinforcement cage

Abstract

The utility model provides a circular pipe culvert pipe joint reinforcement cage which comprises a spiral main reinforcement and a plurality of longitudinal reinforcements, the spiral main reinforcement is coaxially arranged along the central axis of a circular pipe culvert pipe joint, and the longitudinal reinforcements are bound or welded on the outer diameter of the spiral main reinforcement. The longitudinal steel bars are evenly distributed in the circumferential direction of the cross section of the spiral main bar. The circular pipe culvert pipe joint reinforcement cage is simple and reasonable in structure and strong in integrality, adopts an integral inner and outer spiral main reinforcement structure, improves the manufacturing mode of the reinforcement cage, can ensure that the distance between cross sections of each layer of the reinforcement cage is stable, improves the integral structural stability and strength of the reinforcement cage, improves the stability and durability of the circular pipe culvert pipe joint, and reduces the production cost. Potential safety hazards are reduced; and the manufacturing process is simplified, the cost is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circular pipe culvert reinforcement construction engineering, in particular to a circular pipe culvert pipe segment reinforcement cage. Background Art

[0002] Circular culvert is the most common type of culvert structure in road subgrade drainage. The pipe body of the circular culvert is usually made of prefabricated reinforced concrete, in which the steel bars generally adopt a steel cage structure.

[0003] Existing steel cage structures consist of multiple layers of parallel, horizontal steel rings and multiple longitudinal steel bars distributed along their circumferences. See patent document CN 118793060 A, "A Low-Headroom Flexible Steel Cage On-Site Construction Equipment": The flexible steel cage mesh includes a number of longitudinal bars and stirrups (the stirrups are the steel rings). The longitudinal bars are steel strands, spaced parallel and perpendicular to the longitudinal bars, and fixedly connected at their intersections.

[0004] However, the existing steel cage structure mentioned above generally has the following shortcomings during the construction of circular culverts:

[0005] 1. During the binding process of the steel cage, the spacing between the upper and lower steel rings is inconsistent, resulting in poor stability and easy deformation or distortion of the steel cage.

[0006] 2. The steel cage can only be made by tying, lifting and welding the steel cage section by section. This construction method is inefficient, time-consuming, and has high material and labor costs.

[0007] 3. Lifting equipment is required during the hoisting process of the steel cage. If the hoisting equipment is unstable or used improperly, the steel cage may be deformed due to uneven force when it is hoisted, posing a hidden danger to the construction quality of the circular culvert in the later stage. Utility Model Content

[0008] In view of this, the purpose of the present invention is to design a circular culvert segment reinforcement cage, which adopts an integral internal and external spiral main reinforcement structure, improves the reinforcement cage manufacturing method, ensures the stability of the spacing between the cross sections of each layer of the reinforcement cage, improves the overall structural stability of the reinforcement cage, and thereby improves the stability and durability of the circular culvert segment, reduces safety hazards; and simplifies the manufacturing process, reduces costs, and improves construction efficiency.

[0009] The utility model provides a circular culvert segment reinforcement cage, comprising: a spiral main reinforcement and a plurality of longitudinal reinforcements. The spiral main reinforcement is coaxially arranged along the central axis of the circular culvert segment, the plurality of longitudinal reinforcements are tied or welded on the outer diameter of the spiral main reinforcement, and the plurality of longitudinal reinforcements are evenly distributed along the circumferential direction of the cross section of the spiral main reinforcement.

[0010] The steel cage is made in a spiral manner, which can not only utilize the characteristics of the spiral structure of the steel bar to improve the stability of the spacing between the cross sections of each layer, but also simplify the process and reduce the production cost.

[0011] Furthermore, the spiral main reinforcement includes: an inner ring of spiral main reinforcement and an outer ring of spiral main reinforcement, the diameter of the inner ring of spiral main reinforcement is less than the diameter of the outer ring of spiral main reinforcement, the inner ring of spiral main reinforcement is close to the inner wall of the circular culvert segment, and the outer ring of spiral main reinforcement is close to the outer wall of the circular culvert segment.

[0012] The use of inner and outer spiral main reinforcement in the circular culvert not only improves the structural stability of the circular culvert section in the longitudinal direction, but also enhances the structural strength of the circular culvert section in the transverse section.

[0013] Furthermore, the longitudinal steel bars include: an inner ring longitudinal steel bar and an outer ring longitudinal steel bar, the number of the inner ring longitudinal steel bars is equal to that of the outer ring longitudinal steel bars, the inner ring longitudinal steel bars are tied or welded to the outer diameter of the inner ring of the spiral main bar, and the outer ring longitudinal steel bars are tied or welded to the outer diameter of the outer ring of the spiral main bar.

[0014] The longitudinal reinforcement is also divided into two groups, inner and outer circles, corresponding to the spiral main reinforcement, and the number of the inner and outer circles in the two groups is the same, so that the stress in the longitudinal and transverse directions of the circular culvert segment structure is uniform after being subjected to force (such as during lifting), and no twisting or deformation will occur.

[0015] Furthermore, the net distance between the inner circle of the spiral main reinforcement and the inner wall of the circular culvert segment is equal to the net distance between the outer circle of the spiral main reinforcement and the outer wall of the circular culvert segment.

[0016] The use of equal clear distance ensures the uniformity of radial stress inside the circular culvert sections.

[0017] Furthermore, the pitch of the inner circle of the spiral main rib is equal to the pitch of the outer circle of the spiral main rib.

[0018] The inner and outer spiral main bars have equal pitch, which is equivalent to the equal spacing between the cross sections of each layer, ensuring the structural stability of the steel cage and preventing deformation, bending, etc. due to external forces such as lifting.

[0019] Furthermore, the last circle of the spiral main reinforcement at both ends of the circular culvert section forms a complete circular structure.

[0020] The spiral main reinforcement forms a complete circle on the end face of the circular culvert segment, so that the end face structure of the circular culvert segment is effectively supported and reinforced, thereby improving the structural strength of the end face of the circular culvert segment.

[0021] Furthermore, the ends of the inner circle of the spiral main reinforcement and the outer circle of the spiral main reinforcement are overlapped with each other, and the overlapped parts are tied or welded.

[0022] The inner and outer coils of the spiral main reinforcement are firmly connected at the ends, improving the overall structural strength and stability of the reinforcement cage. Compared with the existing layered reinforcement ring structure, the stability of the reinforcement cage structure of this utility model has been greatly improved.

[0023] Furthermore, the pitch of the spiral main reinforcement is less than the transverse distance between two adjacent longitudinal reinforcements.

[0024] The longitudinal pitch of the spiral main reinforcement is smaller than the transverse spacing between two adjacent longitudinal reinforcements. This design ensures the structural stability of the reinforcement cage in the longitudinal direction.

[0025] Furthermore, the difference between the radius of the outer circle of the spiral main reinforcement and the radius of the inner circle of the spiral main reinforcement is less than the transverse distance between two adjacent longitudinal steel bars.

[0026] The radius difference between the inner and outer circles of the spiral main reinforcement is smaller than the transverse distance between two adjacent longitudinal reinforcements. This design ensures the structural stability of the reinforcement cage in the transverse direction.

[0027] Furthermore, the wire diameter of the spiral main reinforcement is greater than the wire diameter of the longitudinal reinforcement.

[0028] The wire diameter of the spiral main reinforcement is larger than that of the longitudinal reinforcement. This design ensures the structural stability of the reinforcement cage in the circumferential direction.

[0029] Compared with the prior art, the utility model has the following beneficial effects:

[0030] The circular pipe culvert section reinforcement cage provided by the utility model has a simple and reasonable structure and strong integrity. It adopts an integral internal and external spiral main reinforcement structure, improves the reinforcement cage manufacturing method, can ensure the stability of the spacing between the cross sections of each layer of the reinforcement cage, improves the overall structural stability and strength of the reinforcement cage, thereby improving the stability and durability of the circular pipe culvert section and reducing safety hazards; and simplifies the manufacturing process, reduces costs and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0032] Figure 1 This is a schematic diagram of the cross-sectional structure of a circular pipe culvert segment reinforcement cage according to an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the longitudinal structure of a circular culvert segment reinforcement cage according to an embodiment of the present utility model;

[0034] Figure 3 This is a schematic diagram of the cross-sectional structure of the inner ring of the spiral main rib according to an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the longitudinal structure of the inner ring of the spiral main rib according to an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the cross-sectional structure of the outer ring of the spiral main rib according to an embodiment of the present utility model;

[0037] Figure 6 This is a schematic diagram of the longitudinal structure of the outer ring of the spiral main rib according to an embodiment of the present utility model;

[0038] Figure 7 Schematic diagram of the wire diameter of the longitudinal steel bars in an embodiment of the present utility model.

[0039] The symbols in the accompanying drawings are:

[0040] 1. Longitudinal reinforcement, 2. Inner ring of spiral main reinforcement, 3. Outer ring of spiral main reinforcement. DETAILED DESCRIPTION

[0041] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] In the description of the present invention, it should be noted that the terms "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0043] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection or an electrical connection; it can mean a direct connection, an indirect connection through an intermediate medium, or a connection between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0044] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings:

[0045] The utility model provides a circular culvert segment reinforcement cage, such as Figure 2 As shown, the reinforcement cage is manufactured using a spiral method. The circular culvert segment in this embodiment has an inner diameter of 150 cm, an outer diameter of 180 cm, a wall thickness of 15 cm, and a length of 200 cm. The spiral main reinforcement is coaxially arranged along the central axis of the circular culvert segment. Multiple longitudinal reinforcements (1) are welded to the outer diameter of the spiral main reinforcement and evenly distributed along the circumference of the spiral main reinforcement's cross-section. This reinforcement cage utilizes the characteristics of the spiral structure of the reinforcement to improve the stability of the spacing between each cross-section layer, simplify the process, and reduce production costs.

[0046] like Figure 1 、 2 As shown, the spiral main reinforcement includes: a spiral main reinforcement inner ring 2, a spiral main reinforcement outer ring 3, as shown in FIG. Figure 3 、 4 As shown, the diameter of the inner ring 2 of the spiral main reinforcement is φ157cm. Figure 5 、 6 As shown, the diameter of the outer ring 3 of the spiral reinforcement is φ173 cm, and the diameter of the inner ring 2 of the spiral reinforcement is smaller than the diameter of the outer ring 3. This reinforcement cage utilizes two inner and outer rings of spiral reinforcement, which improves the structural stability of the circular culvert segment in the longitudinal direction and enhances its structural strength in the transverse cross-section. The inner ring 1 of the spiral reinforcement is close to the inner wall of the circular culvert segment, with a distance of 15 cm from the inner wall. The outer ring 2 of the spiral reinforcement is close to the outer wall of the circular culvert segment, with a distance of 15 cm from the outer wall. The clear distance between the inner ring 2 of the spiral reinforcement and the inner wall of the circular culvert segment is 3 cm, and the clear distance between the outer ring 3 of the spiral reinforcement and the outer wall of the circular culvert segment is 3 cm. The clear distance between the inner ring 2 of the spiral reinforcement and the inner wall of the circular culvert segment is equal to the clear distance between the outer ring 3 of the spiral reinforcement and the outer wall of the circular culvert segment. The equal clear distances ensure uniform radial stress within the circular culvert segment.

[0047] The longitudinal reinforcement 1 consists of an inner ring and an outer ring of longitudinal reinforcement. There are 20 of each ring, evenly spaced along the circumference of the spiral reinforcement cross section. The inner ring is welded to the outer diameter of the inner ring 2 of the spiral reinforcement, while the outer ring is welded to the outer diameter of the outer ring 3 of the spiral reinforcement. The longitudinal reinforcement is also divided into two groups, inner and outer, corresponding to the spiral reinforcement. The number of inner and outer rings is the same in each group. This ensures uniform longitudinal and transverse stresses in the culvert segment when subjected to stress (including during hoisting), preventing distortion or deformation.

[0048] The pitch of the inner coil 2 of the main spiral reinforcement is 6.9 cm, with an effective number of 28 turns; the pitch of the outer coil 3 of the main spiral reinforcement is 6.9 cm, with an effective number of 28 turns. The pitch of the inner coil 2 of the main spiral reinforcement equals the pitch of the outer coil 3 of the main spiral reinforcement. The equal pitch of the inner and outer coils of the main spiral reinforcement means that the spacing between each cross-section is equal, ensuring the structural stability of the reinforcement cage and preventing deformation or bending due to external forces such as hoisting.

[0049] The pitch of the inner and outer rings of spiral reinforcement 2 and 3 is 6.9 cm. The transverse spacing between adjacent outer rings of longitudinal reinforcement is 22.6 cm, and the transverse spacing between adjacent inner rings of longitudinal reinforcement is 20.8 cm. The pitch of the spiral reinforcement is less than the transverse spacing between adjacent longitudinal reinforcements. This design ensures the structural stability of the reinforcement cage in the longitudinal direction.

[0050] The diameter of the inner ring 2 of the spiral main reinforcement is φ157cm, and the diameter of the outer ring 3 of the spiral main reinforcement is φ173cm. The difference between the radius of the outer ring 3 of the spiral main reinforcement and the radius of the inner ring 2 of the spiral main reinforcement is 8cm. The transverse spacing between two adjacent outer rings of longitudinal reinforcement is 22.6cm, and the transverse spacing between two adjacent inner rings of longitudinal reinforcement is 20.8cm. The difference between the radius of the outer ring 3 of the spiral main reinforcement and the radius of the inner ring 2 of the spiral main reinforcement is less than the transverse spacing between two adjacent longitudinal reinforcements. The difference in radius between the inner and outer rings of the spiral main reinforcement is even smaller than the transverse spacing between two adjacent longitudinal reinforcements. This design ensures the structural stability of the reinforcement cage in the transverse direction.

[0051] The diameter of the spiral main reinforcement wire is φ10mm. Figure 7 As shown, the diameter of the longitudinal reinforcement is φ8mm, and the diameter of the spiral main reinforcement is larger than that of the longitudinal reinforcement. This design ensures the structural stability of the reinforcement cage in the circumferential direction.

[0052] The last circle of spiral reinforcement at both ends of the circular culvert section forms a perfect circular structure, such as Figure 6 The spiral main reinforcement forms a complete circle on the end face of the circular culvert segment, which effectively supports and reinforces the end face structure of the circular culvert segment and improves the structural strength of the end face of the circular culvert segment.

[0053] The ends of the inner and outer spiral reinforcement rings 2 and 3 overlap and are welded together. This secure connection between the inner and outer spiral reinforcement rings enhances the overall structural strength and stability of the reinforcement cage. Compared to the existing layered reinforcement ring structures, this embodiment significantly improves the stability of the reinforcement cage structure.

[0054] The steel cage structure of the circular culvert section in this embodiment is simple and reasonable, with strong integrity. It adopts an integral internal and external spiral main reinforcement structure and an improved steel cage manufacturing method, which can ensure the stability of the spacing between the cross sections of each layer of the steel cage and improve the overall structural stability and strength of the steel cage, thereby improving the stability and durability of the circular culvert section.

[0055] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A circular culvert segment reinforcement cage, characterized in that: include: A spiral main reinforcement and a plurality of longitudinal steel bars, wherein the spiral main reinforcement is coaxially arranged along the central axis of the circular culvert section, the plurality of longitudinal steel bars are tied or welded on the outer diameter of the spiral main reinforcement, and the plurality of longitudinal steel bars are evenly distributed along the circumferential direction of the cross section of the spiral main reinforcement.

2. The circular culvert segment reinforcement cage according to claim 1, characterized in that: The spiral main reinforcement includes: an inner ring of spiral main reinforcement and an outer ring of spiral main reinforcement. The diameter of the inner ring of spiral main reinforcement is less than the diameter of the outer ring of spiral main reinforcement. The inner ring of spiral main reinforcement is close to the inner wall of the circular culvert segment, and the outer ring of spiral main reinforcement is close to the outer wall of the circular culvert segment.

3. The circular culvert segment reinforcement cage according to claim 2, characterized in that: The longitudinal steel bars include: an inner ring longitudinal steel bar and an outer ring longitudinal steel bar. The number of the inner ring longitudinal steel bars is equal to that of the outer ring longitudinal steel bars. The inner ring longitudinal steel bars are tied or welded to the outer diameter of the inner ring of the spiral main bar, and the outer ring longitudinal steel bars are tied or welded to the outer diameter of the outer ring of the spiral main bar.

4. The circular culvert segment reinforcement cage according to claim 2, characterized in that: The net distance between the inner circle of the spiral main reinforcement and the inner wall of the circular culvert section is equal to the net distance between the outer circle of the spiral main reinforcement and the outer wall of the circular culvert section.

5. The circular culvert segment reinforcement cage according to claim 2, characterized in that: The pitch of the inner circle of the spiral main rib is equal to the pitch of the outer circle of the spiral main rib.

6. The circular culvert segment reinforcement cage according to claim 1, characterized in that: The last circle of the spiral main reinforcement at both ends of the circular culvert section forms a complete circular structure.

7. The circular culvert segment reinforcement cage according to claim 2, characterized in that: The ends of the inner circle of the spiral main reinforcement and the outer circle of the spiral main reinforcement are overlapped with each other, and the overlapped parts are tied or welded.

8. The circular culvert segment reinforcement cage according to claim 1, characterized in that: The pitch of the spiral main reinforcement is less than the transverse distance between two adjacent longitudinal reinforcements.

9. The circular culvert segment reinforcement cage according to claim 2, characterized in that: The difference between the radius of the outer circle of the spiral main reinforcement and the radius of the inner circle of the spiral main reinforcement is less than the transverse distance between two adjacent longitudinal steel bars.

10. The circular culvert segment reinforcement cage according to claim 1, characterized in that: The wire diameter of the spiral main reinforcement is greater than the wire diameter of the longitudinal reinforcement.

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