Steel reinforcement cage for bamboo pile core and method for filling bamboo pile core

Abstract

The application discloses a bamboo joint pile core filling steel reinforcement cage and a bamboo joint pile core filling method, which comprises a pocket bottom cylinder arranged in the inner cavity of the bamboo joint pile, wherein the outer diameter size of the pocket bottom cylinder gradually increases from bottom to top, the outer diameter size of the cylinder mouth of the pocket bottom cylinder is matched with the inner diameter size of the bamboo joint pile, the cylinder mouth of the upper end of the pocket bottom cylinder is pressed against the inner wall of the bamboo joint pile, the side wall of the pocket bottom cylinder is provided with a plurality of slits, the slits are arranged along the inclined direction of the side wall, and the pouring space is formed between the pocket bottom cylinder and the inner wall of the bamboo joint pile; a plurality of hoisting steel bars, the upper and lower ends of the hoisting steel bar form a hook part, the hoisting steel bar is embedded in the slit, and the hook part of the lower end of the hoisting steel plate is hooked on the cylinder bottom of the pocket bottom cylinder; and a supporting ring beam, which is installed on the end face of the bamboo joint pile and on which the hook part of the upper end of the hoisting steel bar is hung. The application solves the problems that the concrete is not smooth when pouring and is not easy to fill in the existing precast pile core filling.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a steel cage for core grouting of bamboo-joint piles and a method for core grouting of bamboo-joint piles. Background Technology

[0002] For a long time, the filling of precast pile cores has been done using a steel cage and concrete. Due to the complex structure of the steel cage, the processing requires multiple steps such as binding and welding the steel cage to the steel plate. In addition, the concrete is often not poured smoothly, resulting in slow construction efficiency and difficulty in compaction. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, a steel cage for grouting bamboo-joint piles and a grouting method for bamboo-joint piles are provided to solve the problems of uneven concrete pouring and difficulty in compaction during the grouting of existing precast pile cores.

[0004] To achieve the above objectives, a reinforcing cage for core grouting of bamboo-joint piles is provided, comprising:

[0005] A bottom-filling cylinder is installed inside the cavity of the bamboo-joint pile. The outer diameter of the bottom-filling cylinder gradually increases from bottom to top. The outer diameter of the opening of the bottom-filling cylinder is adapted to the inner diameter of the bamboo-joint pile. The upper opening of the bottom-filling cylinder presses against the inner wall of the bamboo-joint pile. Multiple slits are opened on the side wall of the bottom-filling cylinder. The slits are arranged along the inclined direction of the side wall. A casting space is formed between the bottom-filling cylinder and the inner wall of the bamboo-joint pile.

[0006] Multiple lifting steel bars, with hooks formed at both ends of the lifting steel bars, the lifting steel bars being embedded in the gap, and the hooks at the lower end of the lifting steel plate being hooked to the bottom of the bottom-supporting cylinder;

[0007] A support ring beam is installed on the end face of the bamboo-joint pile, and the hook at the upper end of the hoisting steel bar is hung on the support ring beam.

[0008] Furthermore, the number of slits is three, and the three slits are equally spaced along the circumference of the bottom tube.

[0009] Furthermore, the bottom tube has a limiting groove, and the hook at the lower end of the hoisting steel bar is embedded in the limiting groove.

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

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

[0012] This invention provides a method for core grouting bamboo-joint piles using a reinforcing cage for core grouting, comprising the following steps:

[0013] Multiple lifting steel bars are embedded in the gaps of the bottom tube, and the hooks at the lower ends of more than thirty lifting steel bars are hooked to the bottom of the bottom tube.

[0014] The bottom tube is lowered into the inner cavity of the bamboo joint pile;

[0015] Install the supporting ring beam on the upper end face of the bamboo-joint pile;

[0016] The hooks at the upper ends of the multiple hoisting steel bars are hung on the supporting ring beam, so that a pouring space is formed between the bottom tube and the inner wall of the bamboo-joint pile.

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

[0018] The beneficial effects of this invention are that the reinforcing cage for core grouting of bamboo-joint piles is installed by hoisting a bottom support cylinder with a hoisting steel bar, and a supporting ring beam is set on the pile head of the bamboo-joint pile to hang on the hoisting steel bar, thereby forming a reasonably arranged reinforcing cage structure inside the pile head of the bamboo-joint pile. Subsequently, when pouring concrete for core grouting, the concrete pouring is smooth, the grouting construction efficiency is high, and the concrete filling is dense, which improves the construction efficiency and construction quality of bamboo-joint pile core grouting. Attached Figure Description

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

[0020] Figure 1 This is a schematic diagram of the steel cage used for core grouting of bamboo-joint piles according to an embodiment of the present invention.

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

[0022] Figure 3 This is a schematic diagram of the bottom structure of the bottom tube according to an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of the hoisting steel bar according to an embodiment of the present invention. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Reference Figures 1 to 4 As shown, the present invention provides a steel cage for core grouting of bamboo-joint piles, comprising: a bottom support cylinder 1, a hoisting steel bar 2, and a supporting ring beam 3.

[0027] The bottom support tube 1 is installed inside the cavity of the bamboo joint pile 4. Specifically, the bottom support tube 1 is generally shaped like an inverted frustum. The outer diameter of the bottom support tube 1 gradually increases from bottom to top. The outer diameter of the opening of the bottom support tube 1 is adapted to the inner diameter of the bamboo joint pile 4.

[0028] After the bottom support cylinder 1 is placed inside the cavity of the bamboo-joint pile 4, the upper opening of the bottom support cylinder 1 presses against the inner wall of the bamboo-joint pile 4. Multiple slits 10 are provided on the side wall of the bottom support cylinder 1. The slits 10 are arranged along the inclined direction of the side wall. The slits run the entire length of the side wall of the bottom support cylinder, penetrating both vertically. A casting space is formed between the bottom support cylinder 1 and the inner wall of the bamboo-joint pile 4.

[0029] In a preferred embodiment, the number of slits 10 is three. The three slits 10 are evenly spaced along the circumference of the bottom tube 1.

[0030] The number of hoisting steel bars 2 is multiple. The upper and lower ends of the hoisting steel bars 2 form hook sections 21. For details, please refer to... Figure 4 As shown, the upper hook of the lifting steel bar is inverted U-shaped, and the lower hook is L-shaped. The lifting steel bar 2 is movably embedded in the gap 10. The hook 21 at the lower end of the lifting steel plate is hooked to the bottom of the bottom support cylinder 1.

[0031] In this embodiment, refer to Figure 3 As shown, the bottom sleeve 1 has a limiting groove. The hook 21 at the lower end of the lifting steel bar 2 is embedded in the limiting groove 100.

[0032] The supporting ring beam 3 is installed on the end face of the bamboo-joint pile 4. The hook 21 at the upper end of the hoisting steel bar 2 is hung on the supporting ring beam 3.

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

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

[0035] This invention provides a method for core grouting bamboo-joint piles using a reinforcing cage for core grouting, comprising the following steps:

[0036] S1. Multiple hoisting steel bars 2 are embedded in the gaps 10 of the bottom tube 1, and the hooks 21 at the lower ends of the more than thirty hoisting steel bars 2 are hooked to the bottom of the bottom tube 1.

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

[0038] S3. Install the supporting ring beam 3 on the upper end face of the bamboo joint pile 4.

[0039] S4. The hooks 21 at the upper ends of the multiple hoisting steel bars 2 are hung on the supporting ring beam 3, so that a pouring space is formed between the bottom tube 1 and the inner wall of the bamboo pile 4.

[0040] S5. Concrete 7 is poured into the casting space through the inner ring hole of the supporting ring beam 3.

[0041] The steel cage for core grouting of bamboo-joint piles of the present invention fixes the hoisting steel bar to the bottom support cylinder, places the support ring beam on the pile head of the bamboo-joint pile, and directly hangs the upper hook of the hoisting steel bar on the support ring beam, so that core grouting can be carried out subsequently.

[0042] The bottom support tube is made of plastic, custom-made in the factory, and is flexible, lightweight, and easy to use. During production, the bottom support tube is prefabricated in the factory according to the design drawings. Its material is plastic, and it is flexible and not easily damaged. Custom-made bottom support tubes should have limiting grooves on the bottom and sides, the width of which matches the diameter of the steel rod.

[0043] The supporting ring beam and hoisting steel bars are fabricated directly on-site, eliminating the need for welding. During the fabrication of the supporting ring beam, existing finished steel sleeves are taken and cut into steel sleeves, made of 4-5mm thick steel plates with a height of approximately 40-50mm. Besides providing a fulcrum for the hoisting steel bars, the supporting ring beam also helps improve the structural strength of the bamboo-joint pile head.

[0044] When fabricating hoisting steel bars, steel bars of the corresponding model are bent and processed on-site according to the drawings and specifications.

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

[0046] The height of the hook at the upper end of the hoisting steel bar should be slightly less than the height of the supporting ring beam.

[0047] The length of the hook at the lower end of the hoisting steel bar should match the limit groove.

[0048] The steel cage for core grouting of bamboo-joint piles of the present invention has some components prefabricated in the factory and some components processed centrally on site. During construction, it can be put into construction simply by assembling on site, which saves time, materials and labor, and is easy to install. It reduces construction time, reduces fire hazards, and facilitates subsequent core grouting operations.

[0049] Before lowering the bottom support tube, connect and fix the lifting steel bar to the bottom support tube, and connect and fix the hook part at the lower end of the lifting steel bar 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 bars.

[0050] After the bottom tube is lowered into the pile head of the bamboo-joint pile, the support ring beam is placed on the pile head, ensuring that its center is aligned with the center of the pile core, and the upper hook of the hoisting steel bar is directly hung on the support ring beam.

[0051] During the core grouting construction, micro-expansion concrete can be poured directly into the pouring space through the inner ring hole of the supporting ring beam. Its bottom support cylinder can ensure that the concrete does not fall to the bottom of the pile. The hoisting steel bar adopts a hook design, which also ensures that the concrete can enter smoothly and quickly during pouring.

[0052] After the casting is completed, the supporting ring beam does not need to be removed; it can be cast together with the base plate 6. The base plate 6 is cast on the cushion layer 5.

[0053] The reinforcing cage for core grouting of bamboo-joint piles of the present invention uses a bottom support cylinder hoisted by a hoisting steel bar, and a supporting ring beam is set on the pile head of the bamboo-joint pile to hang on the hoisting steel bar, thereby forming a reasonably arranged reinforcing cage structure inside the pile head of the bamboo-joint pile. During the subsequent core grouting operation, the concrete pouring is smooth, the grouting construction efficiency is high, and the concrete filling is dense, which improves the construction efficiency and construction quality of bamboo-joint pile core grouting.

[0054] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A reinforcing cage for core grouting of bamboo-joint piles, characterized in that, include: A bottom-filling cylinder is installed inside the cavity of the bamboo-joint pile. The outer diameter of the bottom-filling cylinder gradually increases from bottom to top. The outer diameter of the opening of the bottom-filling cylinder is adapted to the inner diameter of the bamboo-joint pile. The upper opening of the bottom-filling cylinder presses against the inner wall of the bamboo-joint pile. Multiple slits are opened on the side wall of the bottom-filling cylinder. The slits are arranged along the inclined direction of the side wall. A casting space is formed between the bottom-filling cylinder and the inner wall of the bamboo-joint pile. Multiple lifting steel bars, with hooks formed at both ends of the lifting steel bars, the lifting steel bars being embedded in the gap, and the hooks at the lower ends of the lifting steel bars being hooked to the bottom of the bottom-supporting cylinder; A support ring beam is installed on the end face of the bamboo-joint pile, and the hook at the upper end of the hoisting steel bar is hung on the support ring beam.

2. The reinforcing cage for grouting bamboo-joint piles according to claim 1, characterized in that, The number of slits is three, and the three slits are equally spaced along the circumference of the bottom tube.

3. The reinforcing cage for grouting bamboo-joint piles according to claim 1, characterized in that, The bottom tube has a limiting groove, and the hook at the lower end of the hoisting steel bar is embedded in the limiting groove.

4. The reinforcing cage for core grouting of bamboo-joint piles according to claim 1, characterized in that, The supporting ring beam is coaxially arranged with the bamboo-joint pile.

5. The reinforcing cage for grouting bamboo-joint piles according to claim 4, characterized in that, The outer diameter of the supporting ring beam is larger than the inner diameter of the bamboo-joint pile.

6. A method for core grouting bamboo-joint piles using a reinforcing cage as described in any one of claims 1 to 5, characterized in that, Includes the following steps: Multiple lifting steel bars are embedded in the gaps of the bottom tube, and the hooks at the lower ends of the multiple lifting steel bars are hooked to the bottom of the bottom tube. The bottom tube is lowered into the inner cavity of the bamboo joint pile; Install the supporting ring beam on the upper end face of the bamboo-joint pile; The hooks at the upper ends of the multiple hoisting steel bars are hung on the supporting ring beam, so that a pouring space is formed between the bottom tube and the inner wall of the bamboo-joint pile. Concrete is poured into the casting space through the inner ring hole of the supporting ring beam.

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