Device for breaking underground diaphragm wall pile head by using pre-embedded PVC (polyvinyl chloride) sleeve and adopting low vibration

Abstract

The utility model relates to a device for breaking an underground diaphragm wall pile head with low vibration, belongs to the technical field of pile head breaking, and particularly relates to a device for breaking an underground diaphragm wall pile head with low vibration by utilizing an embedded PVC (polyvinyl chloride) sleeve. The vertical steel bars and the stirrups jointly form a steel reinforcement cage, and the end of each vertical steel bar is sleeved with a PVC sleeve. The underground diaphragm wall pile head mute breaking device achieves the effect of breaking the underground diaphragm wall pile head in a mute mode, and solves the problems that when the pile head is broken in the patent, a breaking gun is adopted for breaking, noise is large, large dust is prone to being generated, and a traditional underground diaphragm wall pile head in China is broken through a pickaxe machine or an air pick device, so that noise is large. The broken pile head is easy to generate micro cracks, the surface of the pile head is uneven, and the construction efficiency is low.

Description

Technical Field

[0001] The utility model relates to the technical field of pile head breaking, in particular to a device for breaking the diaphragm wall pile head with low vibration by using embedded PVC sleeves. Background Technique

[0002] The diaphragm wall, also known as the underground continuous wall, is a form of support for excavating the foundation in construction projects. Sometimes, the diaphragm wall pile head is used as a temporary support structure and needs to be broken after construction.

[0003] After retrieval, the Chinese patent with the publication number CN210737539U discloses a device for breaking the diaphragm wall and cast-in-place pile heads, including a cutting part for cutting the pile head and a clamping part fixedly connected to the cutting part and used for clamping and fixing the pile head. The clamping part includes clamping rings respectively abutting against the two sides of the pile head. The clamping rings abut against the two sides of the pile head to make the clamping part clamp the pile head, and the clamping part is fixedly connected to the cutting part, so that the position of the whole device relative to the pile head is relatively stable under the clamping action of the clamping part, reducing the possibility of the pile head breaking device tilting and shifting, and further reducing the impact on the pile head breaking efficiency.

[0004] Based on the above retrieval and in combination with the prior art, it is found that;

[0005] When breaking the pile head, the above patent uses a crushing gun for breaking, which not only produces a large amount of noise but also easily generates a large amount of dust. For the traditional diaphragm wall pile heads in China, devices such as a pick machine or a pneumatic pick are used for breaking. Microcracks are likely to occur in the broken pile head part and the surface of the pile head is not flat, and the construction efficiency is low. Therefore, there are certain limitations. Content of the Utility Model

[0006] In order to solve the above technical problems, the utility model provides a device for breaking the diaphragm wall pile head with low vibration by using embedded PVC sleeves. By using the provided breaking holes and low-vibration devices such as an expanding agent or an expander, the smooth progress of breaking can be achieved. Through the embedded PVC sleeves and in cooperation with the lifting rings, the broken diaphragm wall can be easily lifted out of the steel reinforcement cage to ensure the quality of pile head breaking.

[0007] The technical solution for achieving the purpose of the utility model is: a device for breaking the diaphragm wall pile head with low vibration by using embedded PVC sleeves, including a plurality of vertical steel bars, and a plurality of stirrups are fixedly installed on the plurality of vertical steel bars. The vertical steel bars and the stirrups together form a steel reinforcement cage, and a PVC sleeve is sleeved on the end of each vertical steel bar.

[0008] Preferably, a concrete diaphragm wall is poured on the steel reinforcement cage.

[0009] Preferably, lifting rings are embedded at the top of the concrete diaphragm wall.

[0010] Preferably, a plurality of breaking holes are formed in the middle of the concrete diaphragm wall.

[0011] Compared with the prior art, the remarkable advantages of this utility model are as follows:

[0012] First: By pre-installing PVC sleeves at the ends of the vertical steel bars in the steel reinforcement cage and sealing the ends of the PVC sleeves, this utility model of the present invention ensures the separation of concrete from the vertical steel bars, ensuring that there will be no interference from the vertical steel bars during lifting. In addition, the breaking holes provided facilitate the breaking of the diaphragm wall pile head. Lifting rings are embedded at the end of the concrete, and the lifting rings are firm and reliable, ensuring that there will be no loosening during the lifting process.

[0013] Second: By filling the breaking holes with expansive agents or installing expanders and other methods to break the diaphragm wall pile head with low vibration, this utility model of the present invention greatly reduces the pollution of noise and dust generated during breaking, reduces the labor intensity, and the pile head part after breaking is not prone to micro-cracks, the pile head surface is flat, and the construction efficiency is high.

[0014] It solves the problems that when the above-mentioned patent breaks the pile head, a crushing gun is used for breaking, which not only generates relatively large noise but also easily generates a large amount of dust. For the traditional domestic diaphragm wall pile head, a pick machine or a pneumatic pick is used for breaking, and the pile head part after breaking is prone to micro-cracks and the pile head surface is not flat, and the construction efficiency is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further explains the present invention in conjunction with the drawings and embodiments:

[0016] Figure 1 It is a schematic top view structure diagram provided by the present invention;

[0017] Figure 2 It is a schematic first perspective view structure diagram provided by the present invention;

[0018] Figure 3 It is a schematic steel reinforcement cage structure diagram provided by the present invention.

[0019] Explanation of the reference numerals in the drawings:

[0020] 1. Vertical steel bar; 2. Stirrup; 3. PVC sleeve; 4. Concrete diaphragm wall; 5. Lifting ring; 6. Breaking hole; 7. Steel reinforcement cage. DETAILED DESCRIPTION OF THE INVENTION

[0021] The present utility model will be described in detail below. The technical solutions in the embodiments of the present utility model are described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present utility model.

[0022] The present utility model provides a device for breaking the diaphragm wall pile head with low vibration by using pre-buried PVC sleeves. The technical solution of the present utility model is as follows:

[0023] As Figures 1-3 shown, a device for breaking the diaphragm wall pile head with low vibration by using pre-buried PVC sleeves includes a plurality of vertical steel bars 1. A plurality of stirrups 2 are fixedly installed on the plurality of vertical steel bars 1. The vertical steel bars 1 and the stirrups 2 together form a steel reinforcement cage 7. A PVC sleeve 3 is sleeved on the end of each vertical steel bar 1. The end of the vertical steel bar 1 is wrapped by the provided PVC sleeve 3, and the end of the PVC sleeve 3 is sealed to prevent the vertical steel bar 1 from contacting the concrete during concrete pouring, thus affecting the subsequent separation of the diaphragm wall pile head.

[0024] Furthermore, a concrete diaphragm wall 4 is poured on the steel reinforcement cage 7. The provided steel reinforcement cage 7 can effectively improve the structural strength of the concrete diaphragm wall 4.

[0025] Furthermore, a lifting ring 5 is pre-buried at the top of the concrete diaphragm wall 4. By pre-burying the lifting ring 5 at the top of the concrete diaphragm wall 4, the provided lifting ring 5 facilitates the subsequent lifting of the diaphragm wall pile head.

[0026] As a further solution of the present utility model, a plurality of breaking holes 6 are formed in the middle of the concrete diaphragm wall 4. By using the provided breaking holes 6, an expanding agent or an expander can be used to break the diaphragm wall pile head above the concrete diaphragm wall 4, greatly reducing the pollution of noise and dust, and ensuring that no cracks are generated in the pile head part after breaking, and keeping it flat.

[0027] The specific working method is as follows: First, bind the steel reinforcement cage 7 of the diaphragm wall, then sleeve the PVC sleeve 3 on the end of the vertical steel bar 1. After hoisting the steel reinforcement cage 7 to the designated position, pour concrete to form the concrete diaphragm wall 4. Then pre-bury the lifting ring 5 at the end of the concrete diaphragm wall 4. After that, open the breaking hole 6 at the pile head breaking position, place the expanding agent or the expander inside to generate a horizontal crack at the predetermined position of the diaphragm wall pile head. Finally, use the provided lifting ring 5 by a hoisting device to lift and separate the broken diaphragm wall pile head, thus completing the breaking of the diaphragm wall pile head.

[0028] The technical means disclosed by the solution of the present utility model are not limited to those disclosed by the above technical means, but also include technical solutions composed of equivalent replacements of the above technical features. Matters not covered by the present utility model belong to the common general knowledge of those skilled in the art.

Claims

1. An apparatus for breaking the pile head of a diaphragm wall with low vibration by using pre-embedded PVC sleeves, comprising a plurality of vertical steel bars (1), and a plurality of stirrups (2) are fixedly installed on the plurality of vertical steel bars (1) together. It is characterized in that: The vertical steel bars (1) and stirrups (2) together form a steel reinforcement cage (7). A PVC sleeve (3) is sleeved on the end of each vertical steel bar (1). A concrete diaphragm wall (4) is cast on the steel reinforcement cage (7). A lifting ring (5) is embedded at the top of the concrete diaphragm wall (4). A plurality of breaking holes (6) are formed in the middle of the concrete diaphragm wall (4).

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