Novel cast-in-place concrete pile reinforcement cage

Abstract

The utility model relates to the technical field of cast-in-place pile construction, and discloses a novel cast-in-place concrete pile reinforcement cage which comprises a spiral stirrup and a plurality of main reinforcements which are connected to the inner side of the spiral stirrup and are annularly distributed. A plurality of groups of first cross hooks and a plurality of groups of second cross hooks are connected to the inner sides of the spiral stirrups, the plurality of groups of first cross hooks are arranged on the spiral lines of the head circle and the tail circle of the spiral stirrups, and the plurality of groups of second cross hooks are arranged on the spiral lines of the middle positions of the spiral stirrups; and the first cross hook and the second cross hook can limit the main reinforcement. According to the novel cast-in-place concrete pile reinforcement cage provided by the utility model, the spiral stirrups and the main reinforcements can be transported separately and assembled on site, so that the quality of the reinforcement cage is ensured; meanwhile, a plurality of groups of first cross hooks and second cross hooks on the inner sides of the spiral stirrups can be used for better limiting a plurality of main reinforcements during assembly; the first cross hook and the second cross hook can be bent outwards after the spiral stirrup and the main reinforcement are fixed and make contact with the inner wall of a drilled hole where a cast-in-place pile reinforcement cage is placed so that the placing position of the cast-in-place pile reinforcement cage can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cast-in-place pile construction, in particular to a new type of steel reinforcement cage for concrete cast-in-place piles. Background Technique

[0002] The concrete cast-in-place piles in the photovoltaic power station project are formed by drilling machines. When the soft soil layer on the upper part of the natural foundation is relatively thick, the settlement of the shallow foundation is too large or the foundation stability cannot meet the building requirements, pile foundations are often used to transfer the load through the piles to the hard soil layer or rock, or to transfer the load to the foundation through the friction force around the piles, so as to improve the bearing capacity of the foundation. Its concrete has compressive and tensile strength but no shear strength. For the convenience of construction, a finished steel reinforcement cage with qualified specifications and dimensions is installed in the concrete cast-in-place pile. The manufacturing process of the steel reinforcement cage directly affects whether the quality of the cast-in-place pile meets the design requirements.

[0003] However, there are some problems in the prior art: the steel reinforcement cage is mainly made by welding and wire binding. After the latter is bound, the main bars are extremely easy to shift during the handling process, and it is difficult to ensure the quality of the steel reinforcement cage. Therefore, a new type of steel reinforcement cage for concrete cast-in-place piles is proposed. Summary of the Utility Model

[0004] Aiming at the problems existing in the above-mentioned technology, the utility model provides a new type of steel reinforcement cage for concrete cast-in-place piles, which solves the problems that the main bars are extremely easy to shift during the handling process and it is difficult to ensure the quality of the steel reinforcement cage.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A new type of steel reinforcement cage for concrete cast-in-place piles includes spiral stirrups and a plurality of main bars connected in a circular arrangement inside the spiral stirrups; a plurality of first hooks and a plurality of second hooks are connected inside the spiral stirrups; the plurality of first hooks are arranged on the first and last turns of the spiral stirrups, and the plurality of second hooks are arranged on the middle turns of the spiral stirrups; the first hooks and the second hooks can limit the main bars.

[0007] Furthermore, the first hook includes an integrally formed extension part, a limiting part and a connecting part; the first hook is welded and fixed to the inner side of the first and last turns of the spiral stirrups through the connecting part; the limiting part is a circular arc plate structure, the diameter of which is adapted to the main bar and can limit the main bar; the extension part is a strip-shaped plate body, which can guide the main bar into the limiting part; a through hole for the wire to pass through is arranged on the extension part, and the wire passes through the through hole to fix the main bar and the spiral stirrups.

[0008] Further, the second hook includes an integrally formed extension part, a limiting part, and a connecting part; the second hook is welded and fixed to the inner side of the spiral stirrup at the middle position of the spiral line through the connecting part; the limiting part is a circular arc plate structure, and its diameter is adapted to the main reinforcement, and it can limit the main reinforcement; the extension part is a strip-shaped plate, and it can guide the main reinforcement into the limiting part.

[0009] Further, after the main reinforcement and the spiral stirrup are fixed, the extension part can be bent and deformed, and the bent and deformed extension part extends out of the spiral stirrup, and the end of the extension part can contact the inner wall of the drilling hole where the cast-in-place pile reinforcement cage is placed.

[0010] Further, a first inclined surface is provided on one side of the connecting part corresponding to the extension part; a second inclined surface is provided on one side of the extension part corresponding to the connecting part.

[0011] The beneficial effects of the present utility model are as follows:

[0012] By adopting the novel cast-in-place concrete pile reinforcement cage provided by the present utility model, the spiral stirrup and the main reinforcement can be transported separately and assembled on site to ensure the quality of the reinforcement cage; at the same time, multiple groups of the first hooks and the second hooks used inside the spiral stirrup can better limit multiple main reinforcements during assembly; after the spiral stirrup and the main reinforcement are fixed, the first hooks and the second hooks can be bent outwards to contact the inner wall of the drilling hole where the cast-in-place pile reinforcement cage is placed to ensure the placement position of the cast-in-place pile reinforcement cage. In addition, the spiral stirrup and the main reinforcement of the novel cast-in-place concrete pile reinforcement cage are fixed by wire binding, and there is no need to weld on site, so it is more suitable for photovoltaic construction sites where the forest and grassland fire prevention situation is severe. Description of the Drawings

[0013] Figure 1 is the overall structural schematic diagram of the novel cast-in-place concrete pile reinforcement cage of the present utility model;

[0014] Figure 2 is the top view of the novel cast-in-place concrete pile reinforcement cage of the present utility model;

[0015] Figure 3 is the three-dimensional schematic diagram of the first hook of the present utility model;

[0016] Figure 4 is the three-dimensional schematic diagram of the second hook of the present utility model;

[0017] In the figure: 1, spiral stirrup; 2, main reinforcement; 3, first hook; 4, second hook; 5, extension part; 6, limiting part; 7, connecting part; 8, through hole; 9, wire; 10, first inclined surface; 11, second inclined surface. Detailed Embodiment

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] This embodiment provides a new type of steel cage for cast-in-place concrete piles. As Figure 1 and Figure 2 shown, it includes a spiral stirrup 1 and six main reinforcements 2 connected to the inner side of the spiral stirrup 1. The six main reinforcements 2 are arranged in an equally spaced circular pattern inside the spiral stirrup 1. It should be noted that the spiral stirrup 1 and the main reinforcements 2 in this embodiment are prefabricated at the manufacturing factory and then transported to the construction site of the photovoltaic power station project, and the connection between the spiral stirrup 1 and the main reinforcements 2 is carried out on site.

[0020] Furthermore, in order to ensure that the main reinforcements 2 will not shift when connecting the spiral stirrup 1 and the main reinforcements 2 at the construction site, thereby ensuring the quality of the steel cage; as Figure 1 and Figure 2 shown, multiple groups of first hooks 3 and multiple groups of second hooks 4 are connected to the inner side of the spiral stirrup 1 in this embodiment. The multiple groups of first hooks 3 are arranged on the first and last turns of the spiral stirrup 1, and the multiple groups of second hooks 4 are arranged on the intermediate turns of the spiral stirrup 1; the first hooks 3 and the second hooks 4 can limit the position of the main reinforcements 2.

[0021] To clearly understand how the first hooks 3 and the second hooks 4 limit the position of the main reinforcements 2 in this embodiment, the specific structures of the first hooks 3 and the second hooks 4 are given in this embodiment:

[0022] As Figure 3 shown, the first hook 3 includes an integrally formed extension part 5, a limiting part 6, and a connecting part 7; the first hook 3 is welded and fixed to the inner side of the first and last turns of the spiral stirrup 1 through the connecting part 7; the limiting part 6 is a circular arc plate structure, and its diameter is adapted to the main reinforcement 2, and it can limit the position of the main reinforcement 2; the extension part 5 is a strip-shaped plate, and it can guide the main reinforcement 2 into the limiting part 6. Furthermore, considering that some construction sites of photovoltaic power station projects are forest grasslands; therefore, as Figure 1 , Figure 2 , Figure 3 shown, a through hole 8 for a wire 9 to pass through is provided on the extension part 5 in this embodiment. The wire 9 passes through the through hole 8 to fix the main reinforcement 2 and the spiral stirrup 1. Fixing the main reinforcement 2 and the spiral stirrup 1 with the wire 9 can avoid fire in the welding operation.

[0023] As Figure 4As shown in the figure, the second hook 4 is similar in structure to the first hook 3, except that: the second hook 4 is welded and fixed to the inner side of the spiral stirrup 1 at the middle position of the spiral line through the connecting part 7, and there is no through hole 8 for the mating wire 9 to pass through on its extension part 5. Further, in this embodiment, the first hook 3 and the second hook 4 are provided with a first inclined surface 10 on the side corresponding to the connecting part 7 and the extension part 5, and at the same time, the extension part 5 is provided with a second inclined surface 11 on the side corresponding to the connecting part 7, further forming a guiding effect on the installation of the main reinforcement 2.

[0024] It should be noted that both the first hook 3 and the second hook 4 in this embodiment are made of iron plates, and are designed according to the installation position of the main reinforcement 2 and the drilling size of the cast-in-place pile. After the first hook 3, the second hook 4 and the spiral stirrup 1 are welded at the manufacturing factory, they are transported to the site together with the spiral stirrup 1.

[0025] Further, the first hook 3 and the second hook 4 in this embodiment also play a role in ensuring the forming quality of the cast-in-place pile. Since both the first hook 3 and the second hook 4 are made of iron plates, after the spiral stirrup 1 and the main reinforcement 2 are tied and fixed with wire 9 at the construction site, the extension parts 5 of the first hook 3 and the second hook 4 can be bent and deformed. The bent and deformed extension parts 5 extend outside the spiral stirrup 1. When the cast-in-place pile steel cage is placed in the drill hole, the end of the extension part 5 contacts, thus playing a role in centering placement.

[0026] In summary, by using the new type of cast-in-place concrete pile steel cage provided in this embodiment, the spiral stirrup 1 and the main reinforcement 2 can be transported separately and assembled on site, which can ensure the quality of the steel cage; after the new type of cast-in-place concrete pile steel cage is placed in the drill hole and then concrete is poured, the forming quality of the cast-in-place pile can be ensured.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of concrete cast-in-place pile reinforcement cage, characterized in that: It includes spiral stirrups and multiple main bars arranged in a ring shape and connected to the inner side of the spiral stirrups; multiple groups of first hooks and multiple groups of second hooks are connected to the inner side of the spiral stirrups, the multiple groups of first hooks are arranged on the first and last spiral circles of the spiral stirrups, and the multiple groups of second hooks are arranged on the middle spiral circle of the spiral stirrups; the first hooks and the second hooks can limit the main bars.

2. The new concrete cast-in-place pile reinforcement cage according to claim 1 is characterized in that: The first hook includes an integrally formed extension portion, a limiting portion and a connecting portion; the first hook is fixed to the inner side of the spiral line of the first and last circles of the spiral stirrups by welding through the connecting portion; the limiting portion is an arc-shaped plate structure, whose diameter is adapted to the main reinforcement and can limit the main reinforcement; the extension portion is a strip-shaped plate, which can guide the main reinforcement to enter the limiting portion; the extension portion is provided with a through hole for the iron wire to pass through, and the iron wire passes through the through hole to fix the main reinforcement and the spiral stirrups.

3. The new concrete cast-in-place pile reinforcement cage according to claim 1 is characterized in that: The second hook includes an integrally formed extension portion, a limiting portion and a connecting portion; the second hook is fixed to the inner side of the spiral line at the middle position of the spiral stirrup by welding the connecting portion; the limiting portion is an arc-shaped plate structure, whose diameter is adapted to the main reinforcement and can limit the main reinforcement; the extension portion is a strip-shaped plate, which can guide the main reinforcement to enter the limiting portion.

4. The novel concrete cast-in-place pile reinforcement cage according to any one of claims 2 and 3, characterized in that: The extension part can be bent and deformed after the main reinforcement and the spiral stirrup are fixed, and the bent and deformed extension part extends out of the spiral stirrup, and the end of the extension part can contact the inner wall of the drilled hole where the cast-in-place pile reinforcement cage is placed.

5. The novel concrete cast-in-place pile reinforcement cage according to any one of claims 2 and 3, characterized in that: A first inclined surface is disposed on one side of the connecting portion corresponding to the extension portion; and a second inclined surface is disposed on one side of the extension portion corresponding to the connecting portion.

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