Reinforcement cage for core grouting of bamboo joint pile and core grouting method of bamboo joint pile

Abstract

The reinforcement cage comprises a bottom holding cylinder arranged in an inner cavity of the bamboo joint pile, the outer diameter size of the bottom holding cylinder is gradually increased from bottom to top, the outer diameter size of a cylinder opening of the bottom holding cylinder is matched with the inner diameter size of the bamboo joint pile, and the cylinder opening in the upper end of the bottom holding cylinder abuts against the inner wall of the bamboo joint pile in a pressing mode; a plurality of gaps are formed in the side wall of the bottom holding cylinder and are arranged in the inclined direction of the side wall, and a pouring space is formed between the bottom holding cylinder and the inner wall of the bamboo joint pile; hook parts are formed at the upper ends and the lower ends of the hoisting steel bars, the hoisting steel bars are embedded in the gaps, and the hook parts at the lower ends of the hoisting steel bars are arranged at the bottom of the bottom holding cylinder in a hooking mode; and the supporting ring beam is installed on the end face of the bamboo joint pile, and the hook part at the upper end of the hoisting steel bar is hung on the supporting ring beam. The problems that when an existing precast pile core is grouted and filled, concrete pouring is not smooth, and filling is not easy are solved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a steel cage for bamboo-joint pile core pouring and a bamboo-joint pile core pouring method. Background Art

[0002] The core filling of precast piles has always been made of cast-in-place steel cage + concrete. Due to the complex structure of the steel cage, the processing requires multiple steps such as binding and welding of the steel cage to the steel plate, and the concrete is often not smooth when poured in, resulting in slow construction efficiency and difficulty in filling. Summary of the invention

[0003] In order to overcome the defects of the prior art, a steel cage for bamboo pile core filling and a bamboo pile core filling method are provided to solve the problem that when the existing prefabricated pile core is filled with concrete, concrete cannot be poured smoothly and is not easy to fill.

[0004] In order to achieve the above object, a steel cage for bamboo pile core casting is provided, comprising:

[0005] A bottom-covering tube is arranged in the inner cavity of the bamboo pile, the outer diameter of the bottom-covering tube gradually increases from bottom to top, the outer diameter of the tube mouth of the bottom-covering tube is adapted to the inner diameter of the bamboo pile, the tube mouth at the upper end of the bottom-covering tube is pressed against the inner wall of the bamboo pile, a plurality of slits are opened on the side wall of the bottom-covering tube, the slits are arranged along the inclined direction of the side wall, and a casting space is formed between the bottom-covering tube and the inner wall of the bamboo pile;

[0006] A plurality of lifting steel bars, wherein the upper and lower ends of the lifting steel bars form hook portions, the lifting steel bars are embedded in the gaps, and the hook portions at the lower ends of the lifting steel plates are hooked on the bottom of the bottom-covering tube;

[0007] A supporting ring beam is installed on the end surface of the bamboo pile, and a hook portion at the upper end of the hoisting steel rod is hung on the supporting ring beam.

[0008] Furthermore, the number of the slits is three, and the three slits are arranged at equal intervals along the circumferential direction of the bottom cylinder.

[0009] Furthermore, the bottom support tube is formed with a limiting groove, and the hook portion at the lower end of the lifting steel rod is embedded in the limiting groove.

[0010] Furthermore, the supporting ring beam is coaxially arranged with the bamboo pile.

[0011] Furthermore, the outer diameter of the supporting ring beam is greater than the inner diameter of the bamboo pile.

[0012] The present invention provides a bamboo-joint pile core-casting method using a steel cage for bamboo-joint pile core-casting, comprising the following steps:

[0013] Embed a plurality of lifting steel rods in the gaps of the bottom support tube, and hook the lower ends of more than thirty lifting steel rods on the bottom of the bottom support tube;

[0014] Lower the bottom-covering tube into the inner cavity of the bamboo pile;

[0015] Installing the supporting ring beam on the upper end surface of the bamboo pile;

[0016] The hooks at the upper ends of the plurality of hoisting steel bars are hung on the supporting ring beam, so that a casting space is formed between the bottom cylinder and the inner wall of the bamboo pile;

[0017] Concrete is poured into the casting space through the inner ring hole of the supporting ring beam.

[0018] The beneficial effects of the present invention are that the steel cage for core pouring of the bamboo pile of the present invention is hoisted with a bottom cylinder by hoisting steel rods, and a supporting ring beam is arranged on the pile head of the bamboo pile to be hung on the hoisting steel rod, thereby forming a rationally arranged steel cage structure inside the pile head of the bamboo pile. When pouring concrete for core pouring operation, the concrete pouring is smooth and the pouring construction efficiency is high. At the same time, the concrete is filled densely, which improves the construction efficiency and construction quality of the bamboo pile core pouring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0020] Figure 1 It is a schematic structural diagram of a steel cage for a bamboo pile core according to an embodiment of the present invention.

[0021] Figure 2 It is a schematic structural diagram of the bottom support tube according to an embodiment of the present invention.

[0022] Figure 3 It is a schematic structural diagram of the bottom of the bottom-covering tube according to an embodiment of the present invention.

[0023] Figure 4 It is a schematic structural diagram of a hoisting steel bar according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] Reference Figures 1 to 4 As shown, the present invention provides a steel cage for bamboo pile core casting, comprising: a bottom tube 1, a hoisting steel rod 2, and a supporting ring beam 3.

[0027] The bottom-covering tube 1 is arranged in the inner cavity of the bamboo pile 4. Specifically, the bottom-covering tube 1 is in the shape of an inverted truncated cone as a whole. The outer diameter of the bottom-covering tube 1 gradually increases from bottom to top. The outer diameter of the tube mouth of the bottom-covering tube 1 is adapted to the inner diameter of the bamboo pile 4.

[0028] After the bottom-covering tube 1 is set in the inner cavity of the bamboo pile 4, the tube mouth at the upper end of the bottom-covering tube 1 is pressed against the inner wall of the bamboo pile 4. The side wall of the bottom-covering tube 1 is provided with a plurality of slits 10. The slits 10 are arranged along the inclined direction of the side wall. The slits are arranged along the full length of the side wall of the bottom-covering tube, and penetrate the side wall up and down. A casting space is formed between the bottom-covering tube 1 and the inner wall of the bamboo pile 4.

[0029] As a preferred embodiment, there are three slits 10 , which are arranged at equal intervals along the circumference of the bottom container 1 .

[0030] There are multiple hoisting steel bars 2. The upper and lower ends of the hoisting steel bars 2 form hook portions 21. Figure 4 As shown, the hook portion of the upper part of the hoisting steel bar is in an inverted U shape, and the hook portion of the lower part of the hoisting steel bar is in an L shape. The middle of the hoisting steel bar 2 is movably embedded in the gap 10. The hook portion 21 at the lower end of the hoisting steel plate is hooked on the bottom of the bottom tube 1.

[0031] In this embodiment, see Figure 3 As shown, the bottom cylinder 1 is formed with a limiting groove. The hook portion 21 at the lower end of the hoisting steel rod 2 is embedded in the limiting groove 100.

[0032] The supporting ring beam 3 is mounted on the end surface of the bamboo pile 4. The hook portion 21 at the upper end of the hanging steel rod 2 is hung on the supporting ring beam 3.

[0033] As a preferred implementation, the supporting ring beam 3 and the bamboo pile 4 are coaxially arranged.

[0034] In this embodiment, the outer diameter of the supporting ring beam 3 is greater than the inner diameter of the bamboo pile 4 .

[0035] The present invention provides a bamboo-joint pile core-casting method using a steel cage for bamboo-joint pile core-casting, comprising the following steps:

[0036] S1. Embed a plurality of lifting steel rods 2 in the gap 10 of the bottom support tube 1 , and hook the lower ends of more than thirty lifting steel rods 2 on the bottom of the bottom support tube 1 .

[0037] S2, lower the bottom tube 1 into the inner cavity of the bamboo pile 4.

[0038] S3, installing the supporting ring beam 3 on the upper end surface of the bamboo pile 4.

[0039] S4. Hang the hooks 21 at the upper ends of the plurality of hoisting steel rods 2 on the supporting ring beam 3 so that a casting space is formed between the bottom tube 1 and the inner wall of the bamboo pile 4.

[0040] S5. Pour concrete 7 into the casting space through the inner ring hole of the supporting ring beam 3.

[0041] The steel cage for core pouring of bamboo piles of the present invention fixedly connects the hoisting steel rod with the bottom support tube, the supporting ring beam is placed on the pile head of the bamboo pile, the upper hook of the hoisting steel rod is directly hung on the supporting ring beam, and the core pouring construction can be carried out subsequently.

[0042] The bottom tube is a plastic tube, which is customized by the factory. It has a certain flexibility and is light and fast. When making the bottom tube, it is prefabricated by the factory according to the design drawings. It is made of plastic and has a certain flexibility and is not easy to break. The bottom and side of the customized bottom tube should be equipped with limit grooves, and the width should be consistent with the diameter of the steel rod.

[0043] The supporting ring beam and the hoisting steel rod are directly processed on site without welding. When making the supporting ring beam, the existing finished steel casing is taken and cut into steel casings, which are made of 4-5mm thick steel plates and about 40-50mm in height. In addition to providing a fulcrum for the hoisting steel rod, the supporting ring beam can also help improve the structural strength of the bamboo pile head.

[0044] When making lifting steel bars, take the corresponding model steel bars and perform on-site bending processing according to the drawings and specifications.

[0045] One end of the hoisting steel rod is bent into a U-shaped hook portion at the upper end, and the other end is bent into an L-shaped hook portion at the lower end.

[0046] The height of the hook at the upper end of the lifting steel rod d should be slightly smaller than the height of the supporting ring beam.

[0047] The length of the hook at the lower end of the lifting steel rod should match the limiting groove.

[0048] The steel cage for core pouring of the bamboo pile of the present invention is partially prefabricated in a factory, and partially processed on site. During construction, it only needs to be assembled on site before it can be put into construction, which saves time, materials, and labor, and is easy to install. It not only reduces construction time and fire hazards, but also facilitates subsequent core pouring operations.

[0049] Before lowering the bottom cylinder, connect and fix the lifting steel rod to the bottom cylinder, and splice and fix the hook at the lower end of the lifting steel rod to the limiting groove at the bottom of the plastic pallet. This step needs to be repeated 3 times, requiring a total of 3 steel rods.

[0050] After the bottom tube is lowered into the head of the bamboo pile, place the supporting ring beam on the head of the bamboo pile, ensure that its center is aligned with the center of the pile core, and hang the upper hook of the lifting steel rod directly on the supporting ring beam.

[0051] During the core pouring construction, the slightly expansive concrete can be directly poured into the pouring space through the inner ring hole of the supporting ring beam. The bottom tube can ensure that the concrete does not fall to the bottom of the pile. The hanging steel rod adopts a hook design, which also ensures that the concrete can enter smoothly and quickly during pouring.

[0052] After the pouring is completed, the supporting ring beam does not need to be removed and can be poured together with the bottom plate 6. The bottom plate 6 is poured on the cushion layer 5.

[0053] The steel cage for core pouring of bamboo piles of the present invention is hoisted with a bottom cylinder by hoisting steel rods, and a supporting ring beam is arranged on the pile head of the bamboo pile to be hung on the hoisting steel rod, thereby forming a rationally arranged steel cage structure inside the pile head of the bamboo pile. When pouring concrete for core pouring operation, concrete pouring is smooth and the pouring construction efficiency is high. At the same time, the concrete is filled densely, thereby improving the construction efficiency and construction quality of the bamboo pile core pouring.

[0054] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A steel cage for bamboo pile core casting, characterized in that: include: A bottom-covering tube is arranged in the inner cavity of the bamboo pile, the outer diameter of the bottom-covering tube gradually increases from bottom to top, the outer diameter of the tube mouth of the bottom-covering tube is adapted to the inner diameter of the bamboo pile, the tube mouth at the upper end of the bottom-covering tube is pressed against the inner wall of the bamboo pile, a plurality of slits are opened on the side wall of the bottom-covering tube, the slits are arranged along the inclined direction of the side wall, and a casting space is formed between the bottom-covering tube and the inner wall of the bamboo pile; A plurality of lifting steel bars, wherein the upper and lower ends of the lifting steel bars form hook portions, the lifting steel bars are embedded in the gaps, and the hook portions at the lower ends of the lifting steel plates are hooked on the bottom of the bottom-covering tube; A supporting ring beam is installed on the end surface of the bamboo pile, and a hook portion at the upper end of the hoisting steel rod is hung on the supporting ring beam.

2. The steel cage for bamboo pile core casting according to claim 1 is characterized in that: The number of the slits is three, and the three slits are arranged at equal intervals along the circumferential direction of the bottom cylinder.

3. The steel cage for bamboo pile core casting according to claim 1 is characterized in that: The bottom support tube is formed with a limiting groove, and the hook portion at the lower end of the lifting steel rod is embedded in the limiting groove.

4. The steel cage for bamboo pile core casting according to claim 1, characterized in that: The supporting ring beam is coaxially arranged with the bamboo pile.

5. The steel cage for bamboo pile core casting according to claim 4 is characterized in that: The outer diameter of the supporting ring beam is greater than the inner diameter of the bamboo pile.

6. A method for core-casting bamboo piles using the steel cage for core-casting bamboo piles as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Embed a plurality of lifting steel rods in the gaps of the bottom support tube, and hook the lower ends of more than thirty lifting steel rods on the bottom of the bottom support tube; Lower the bottom-covering tube into the inner cavity of the bamboo pile; Installing the supporting ring beam on the upper end surface of the bamboo pile; The hooks at the upper ends of the plurality of hoisting steel bars are hung on the supporting ring beam, so that a casting space is formed between the bottom cylinder and the inner wall of the bamboo pile; Concrete is poured into the casting space through the inner ring hole of the supporting ring beam.

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