Positioning frame for layer stirrups of variable cross-section pier

Abstract

The present invention discloses a positioning frame for layered stirrups of variable-section piers, comprising: a bottom support frame and a positioning and shaping frame; the positioning and shaping frame is fixed to the top of the bottom support frame; the positioning and shaping frame comprises a plurality of step frames, which are arranged in sequence and at intervals, so that the top-view outer contour of the positioning and shaping frame is a runway-like structure; the height of the step frame increases layer by layer from the outside to the inside along the radial direction of the runway-like structure; the step between the bottom step and the top step belonging to the same step frame is an intermediate step, and the outer side of the intermediate step is fixed with a limiting convex column, and the limiting convex column is used to limit the stirrups. It can efficiently complete the assembly of each layer of stirrups of the variable-section pier.

Description

Technical Field

[0001] The invention relates to the technical field of stirrup processing equipment, in particular to a positioning frame for layered stirrups of variable-section piers. Background Art

[0002] The piers of bridges have both constant and variable cross-sections, and the piers of bridges must be wrapped layer by layer with stirrups to enhance their strength. Each stirrup needs to be assembled from multiple steel bars, and in water bridges, anti-corrosion stirrups (such as epoxy stirrups) are required. Therefore, stirrups should not be assembled by welding, that is, they need to be assembled by bundling. However, how to efficiently complete the assembly of each layer of stirrups of the variable cross-section pier is a technical problem that needs to be solved urgently. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a method for efficiently completing the assembly of various layers of stirrups of a variable-section pier.

[0004] The purpose of the present invention is achieved by the following technical solutions:

[0005] A positioning frame for layered stirrups of a variable-section pier body, comprising: a bottom support frame and a positioning and shaping frame; the positioning and shaping frame is fixed to the top of the bottom support frame; the positioning and shaping frame comprises a plurality of step frames, which are arranged in sequence and at intervals so that the top-view outer contour of the positioning and shaping frame presents a runway-like structure; the height of the step frames increases layer by layer from the outside to the inside along the radial direction of the runway-like structure; the steps between the bottom step and the top step belonging to the same step frame are intermediate step steps, and limiting bosses are fixed on the outer sides of the intermediate step steps, and the limiting bosses are used to limit the stirrups.

[0006] Furthermore, the bottom support frame is also provided with two safety guardrails; the two safety guardrails are respectively arranged at both ends of the runway-shaped structure, and respectively correspond to the ladder frames located at the ends of the positioning and shaping frame; the safety guardrails are composed of multiple vertical rods, and the multiple vertical rods are arranged at intervals along the radial direction of the runway-shaped structure, and the height of the vertical rods is equal to or greater than the height of the top step.

[0007] Furthermore, each of the vertical rods is located at the junction of two steps belonging to the same ladder frame.

[0008] Furthermore, the vertical rod is tangent to the vertical plane of the ladder and is closer to the upper step than the lower step.

[0009] Furthermore, the vertical rod is a hollow tube structure.

[0010] Furthermore, the bottom support frame is fixed with a plurality of positioning columns, and the plurality of vertical rods are detachably plugged into the plurality of positioning columns in a one-to-one correspondence.

[0011] Furthermore, the positioning column is welded to the bottom support frame.

[0012] Furthermore, the limiting boss located in the arc section of the runway-shaped structure is a cylindrical structure, and the limiting boss located in the straight section of the runway-shaped structure is a square column structure.

[0013] Furthermore, a plurality of lifting rings are fixed to the top of the bottom support frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The stirrups are supported and limited by the multiple step frames of the positioning frame, so that the stirrups can be prefabricated, so that the prefabricated stirrups can be put on the periphery of the pier. Since the step frame has multiple steps, stirrups of different sizes can be prefabricated at the same time, that is, stirrups of different levels of the variable-section pier body can be prefabricated synchronously to improve the prefabrication efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a positioning frame for layered stirrups of variable-section piers according to the present invention;

[0017] Figure 2 for Figure 1 A local enlarged view of point A;

[0018] Figure 3 for Figure 1 A top view of

[0019] Figure 4 for Figure 3 A local enlarged view of point B;

[0020] Figure 5 for Figure 3 A partial enlarged view of point C.

[0021] In the figure: 1. bottom support frame; 2. positioning and shaping frame; 21. step frame; 3. limiting boss; 4. safety guardrail; 41. vertical rod; 5. positioning column; 6. lifting ring; 7. stirrup. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element, or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element, or there may be an element centered thereon. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0024] Unless otherwise defined, all technical terms and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] Figure 1-Figure 4 A positioning frame for layered stirrups of variable-section piers according to a preferred embodiment of the present invention is shown, which includes: a bottom support frame 1 and a positioning and shaping frame 2. The positioning and shaping frame 2 is fixed to the top of the bottom support frame 1, preferably by welding. The positioning and shaping frame 2 includes a plurality of step frames 21, and the plurality of step frames 21 are arranged in sequence and at intervals so that the top-view outer contour of the positioning and shaping frame 2 presents a runway-like structure; that is, each step frame 21 is fixed to the bottom support frame 1 by welding. The height of the step frame 21 increases layer by layer from the outside to the inside along the radial direction of the runway-like structure, and each step can support a stirrup 7. The step between the bottom step and the top step belonging to the same step frame 21 is an intermediate step, and the outer side of the intermediate step is fixed with a limiting boss 3, and the limiting boss 3 is used to limit the stirrup 7. When prefabricated stirrups 7 are required, for example, refer to Figure 1 , put multiple stirrups 7 in place first, and the steel bars of the annular segment are supported by the corresponding steps and limited by the corresponding limiting protrusions 3. Since the anti-corrosion stirrups 7 cannot be fixed by welding, multiple steel bars belonging to the same stirrup 7 need to be fixed by wire tying or galvanized clips until the preforming of the stirrup 7 is completed, and then the stirrup 7 is taken out from the positioning and shaping frame 2.

[0026] Obviously, the stirrups 7 can be prefabricated by supporting and limiting the stirrups 7 through the multiple step frames 21 of the positioning and shaping frame 2, so that the prefabricated stirrups 7 can be put on the periphery of the pier. Since the step frame 21 has multiple steps, stirrups 7 of different sizes can be prefabricated at the same time, that is, stirrups 7 of different levels of the variable-section pier body can be prefabricated synchronously to improve the prefabrication efficiency.

[0027] Preferably, see Figure 1 and Figure 2, the bottom support frame 1 is also provided with two safety guardrails 4; the two safety guardrails 4 are respectively arranged at the two ends of the runway-like structure, and respectively correspond to the ladder frames 21 located at the ends of the positioning and shaping frame 2; the safety guardrails 4 are composed of a plurality of vertical rods 41, and the plurality of vertical rods 41 are arranged at intervals along the radial direction of the runway-like structure, and the height of the vertical rods 41 is equal to or greater than the height of the top step. It can be understood that the vertical rods 41 can limit the stirrups 7 that are ejected in the event of an accidental construction to prevent construction safety incidents. Moreover, it should be noted that based on the fact that the two ends of the runway-like structure are the limit ends of the stirrups 7, through the limitation of the safety guardrails 4 at the two ends, the stirrups 7 not only cannot be ejected radially, but also cannot move circumferentially, so as to further improve safety.

[0028] Preferably, in order to prevent the vertical rod 41 from being closer to the stirrup 7 than the limiting boss 3, that is, to ensure the normal function of the limiting boss 3, each vertical rod 41 is located at the junction of two steps belonging to the same ladder frame 21. In other words, the limiting boss 3 plays a conventional limiting role, while the vertical rod 41 plays an unconventional limiting role (i.e., it only works when avoiding danger).

[0029] Preferably, the vertical rod 41 is tangent to the vertical plane of the step and is closer to the upper step than the lower step. Obviously, this arrangement not only reduces the difficulty of positioning the vertical rod 41 to improve the installation efficiency of the vertical rod 41, but also ensures that the limiting boss 3 is closer to the stirrup 7 than the vertical rod 41.

[0030] In order to prevent the vertical rod 41 from breaking due to excessive impact, preferably, the vertical rod 41 is a hollow tube structure. By setting it as a hollow tube structure, the rigidity of the vertical rod 41 is reduced, so that it has a certain toughness to swing elastically, thereby providing buffering.

[0031] Preferably, in order to facilitate the replacement or regular maintenance of the vertical rods 41, the bottom support frame 1 is fixed with multiple positioning columns 5, and the multiple vertical rods 41 are detachably plugged into the multiple positioning columns 5 in a one-to-one correspondence. In this way, when the vertical rods 41 do not meet the standards, new vertical rods 41 can be replaced in time, and the replacement cost is low.

[0032] Preferably, the positioning column 5 is welded to the bottom support frame 1 or fixed by bolts.

[0033] Preferably, the limiting boss 3 located in the arc section of the runway-like structure is a cylindrical structure. In this way, the contact area between the stirrup 7 and the limiting boss 3 is small, but this part is the position where the interaction force between the stirrup 7 and the limiting boss 3 is large, so as to facilitate the loosening of the stirrup 7 after prefabrication. The limiting boss 3 located in the straight section of the runway-like structure is a square column structure. In this way, the contact area between the stirrup 7 and the limiting boss 3 is large, but this part is the position where the interaction force between the stirrup 7 and the limiting boss 3 is small, so there is no need to consider the difficulty of loosening the stirrup 7 after prefabrication. By setting it as a square column structure, its service life can be extended.

[0034] Preferably, in order to facilitate the crane to lift the bottom support frame 1 and thus facilitate the movement of the bottom support frame 1 , a plurality of lifting rings 6 are fixed to the top of the bottom support frame 1 .

[0035] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A positioning frame for layered stirrups of variable cross-section piers, characterized in that: include: A bottom support frame (1) and a positioning and shaping frame (2); the positioning and shaping frame (2) is fixed to the top of the bottom support frame (1); the positioning and shaping frame (2) comprises a plurality of step frames (21), the plurality of step frames (21) are arranged in sequence and at intervals, so that the top view outer contour of the positioning and shaping frame (2) presents a runway-like structure; the height of the step frames (21) increases layer by layer from the outside to the inside along the radial direction of the runway-like structure; the step between the bottom step and the top step belonging to the same step frame (21) is an intermediate step, and the outer sides of the intermediate steps are all fixed with limiting convex columns (3), and the limiting convex columns (3) are used to limit the stirrups (7): The bottom support frame (1) is also provided with two safety guardrails (4); the two safety guardrails (4) are respectively arranged at the two ends of the runway-shaped structure and respectively correspond to the ladder frames (21) located at the ends of the positioning and shaping frame (2); the safety guardrails (4) are composed of a plurality of vertical rods (41), the plurality of vertical rods (41) are arranged at intervals along the radial direction of the runway-shaped structure, and the height of the vertical rods (41) is equal to or greater than the height of the top step.

2. The positioning frame for layered stirrups of variable cross-section piers according to claim 1, characterized in that: Each of the vertical rods (41) is located at the junction of two steps belonging to the same ladder frame (21).

3. The positioning cradle for layered stirrups of variable cross-section piers according to claim 2, characterized in that: The vertical rod (41) is tangent to the vertical plane of the steps and is closer to the upper step than to the lower step.

4. The positioning cradle for layered stirrups of variable cross-section piers according to claim 1, characterized in that: The vertical rod (41) is a hollow tube structure.

5. The positioning jig for layered stirrups of variable cross-section piers according to claim 4, characterized in that: The bottom support frame (1) is fixed with a plurality of positioning columns (5), and the plurality of vertical rods (41) are plugged into the plurality of positioning columns (5) in a one-to-one corresponding and detachable manner.

6. The positioning jig for layered stirrups of variable cross-section piers according to claim 5, characterized in that: The positioning column (5) is welded to the bottom support frame (1).

7. The positioning cradle for layered stirrups of variable cross-section piers according to claim 1, characterized in that: The limiting convex column (3) located in the arc section of the runway-shaped structure is a cylindrical structure, and the limiting convex column (3) located in the straight section of the runway-shaped structure is a square column structure.

8. The positioning jig for layered stirrups of variable cross-section piers according to claim 1, characterized in that: A plurality of lifting rings (6) are fixed to the top of the bottom support frame (1).

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