Sleeve structure for cutting pile head of cast-in-place pile

Abstract

The utility model discloses a sleeve structure for cutting off a cast-in-place pile head, and belongs to the technical field of cast-in-place pile head cutting, the sleeve structure comprises steel bars and an annular isolation plate, the lower surface of the annular isolation plate is provided with a plurality of insertion holes matched with the steel bars, and the upper surface of the annular isolation plate is fixedly provided with a plurality of flanges; by arranging the annular isolation plate, a horizontal isolation face can be formed at the joint of the invalid pile head and the effective pile body and used for positioning the position of the invalid pile head, the follow-up construction difficulty can be reduced, the periphery of each steel bar is sleeved with a sleeve, poured concrete can be prevented from making direct contact with the steel bars, and therefore when the pile is broken, the construction efficiency is improved. The pile head formed by over-grouting part concrete is conveniently and rapidly separated from the reinforcing steel bar, the inserting position of the breaking nail is limited by arranging the positioning block, the breaking nail is prevented from making contact with the reinforcing steel bar, and it is guaranteed that when a worker cuts off the pile head of the grouting pile, the pile body concrete and the reinforcing steel bar cannot be damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pile head cutting of cast-in-place pile, and particularly to a sleeve structure for pile head cutting of cast-in-place pile. BACKGROUND

[0002] The cast-in-place pile is a mature civil engineering structure, which can bear horizontal or vertical load, has strong bearing capacity, is suitable for various poor ground, and is widely used in municipal, road and bridge, water conservancy and hydropower, and port engineering foundation and foundation pit support engineering. Due to the limitation of current construction technology and process level, the pile head of the cast-in-place pile will form a floating slurry layer in a certain depth range during pouring, and the strength of the floating slurry layer cannot meet the design requirements, so it needs to be cut off.

[0003] In the prior art, artificial and mechanical methods are often used for cutting, wherein the artificial method relies on the operator to use simple tools such as a pneumatic pick and pliers to remove the pile head layer by layer. This method has the advantages of not needing special equipment, simple breaking principle, and simple operation process. However, in the operation process, the pile body concrete and longitudinal reinforcement are easily damaged. Therefore, the sleeve structure for pile head cutting of cast-in-place pile needs to be improved. CONTENT OF THE INVENTION

[0004] In view of the deficiencies of the prior art, the present application provides a sleeve structure for pile head cutting of cast-in-place pile, which overcomes the deficiencies of the prior art and aims to solve the problem that the pile body concrete and longitudinal reinforcement are easily damaged when the cast-in-place pile head is cut off manually.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a sleeve structure for pile head cutting of cast-in-place pile, comprising a reinforcing bar and an annular isolation plate, a plurality of insertion holes matched with the reinforcing bar are formed in the lower surface of the annular isolation plate, a plurality of flanges are fixedly installed on the upper surface of the annular isolation plate, the annular isolation plate is fixedly connected with a sleeve through the flanges, the sleeve is sleeved on the outer periphery of the reinforcing bar, a sealing cover is arranged at the upper end of the sleeve, a positioning block is fixedly installed between any adjacent two flanges on the upper surface of the annular isolation plate, and a breaking spike is slidably inserted into the positioning block.

[0006] By adopting the above technical solution, the annular isolation plate can form a horizontal isolation surface at the junction between the invalid pile head and the effective pile body, which is used to position the invalid pile head, and can reduce the subsequent construction difficulty. The sleeve is sleeved on the outer periphery of each reinforcing bar, which can avoid direct contact between the poured concrete and the reinforcing bar, so as to facilitate the rapid separation of the pile head formed by the over-poured part of the concrete and the reinforcing bar when breaking the pile. The insertion position of the breaking spike is limited by the positioning block, which avoids the contact between the breaking spike and the reinforcing bar, and ensures that the pile body concrete and the reinforcing bar are not damaged when the cast-in-place pile head is cut off by the worker.

[0007] As a preferred technical solution of the present application, the inside of the positioning block is provided with a breaking nail moving groove, the side of the breaking nail moving groove away from the central axis of the annular isolation plate is open, the front end of the breaking nail is conical, and the breaking nail is matched with the breaking nail moving groove.

[0008] By adopting the above technical solution, since the breaking nail moving groove is not through, it can avoid the concrete entering the inside of the breaking nail moving groove during the pouring of the concrete, and the conical setting of the front end of the breaking nail facilitates insertion.

[0009] As a preferred technical solution of the present application, the outer surface of the sleeve is provided with a connecting thread near the upper end position, and the sleeve is threadedly connected with the sealing cover through the connecting thread.

[0010] By adopting the above technical solution, the connecting thread is arranged to facilitate the combination of the sleeve and the sealing cover, so as to avoid the concrete entering the inside of the sleeve.

[0011] As a preferred technical solution of the present application, the inner wall of the sleeve is provided with a sealing tube, the height of the sealing tube is the same as that of the sleeve, the sealing tube is made of rubber material, and the inner wall of the sealing tube is matched with the outer wall of the reinforcing bar.

[0012] By adopting the above technical solution, the sealing tube made of rubber material has a certain elastic deformation capacity, so as to be closely matched on the outer wall of the reinforcing bar, and ensure that there is no gap between the reinforcing bar and the sleeve.

[0013] As a preferred technical solution of the present application, the number of the reinforcing bars, flanges, sleeves, sealing tubes, sealing covers and reinforcing bars is the same and one-to-one corresponding, and the reinforcing bars, flanges, sleeves, sealing tubes, sealing covers and reinforcing bars are uniformly distributed in a circular array about the central axis of the annular isolation plate.

[0014] By adopting the above technical solution, each reinforcing bar is isolated to avoid direct contact between the poured concrete and the reinforcing bar, so as to facilitate the rapid separation of the pile head formed by the over-poured concrete and the reinforcing bar.

[0015] As a preferred technical solution of the present application, the upper side of the annular isolation plate is provided with two fixing rings, and the sleeves are fixedly connected together through the fixing rings.

[0016] By adopting the above technical solution, the sleeves are fixedly connected together through the fixing rings to form a whole, so as to ensure that the sleeves will not be positionally deviated during pouring.

[0017] As a preferred technical scheme of the present application, the top of the fixing ring is fixedly connected with hoisting pipes, the number of the hoisting pipes is three, and the three hoisting pipes are uniformly distributed in a circular array at the top of the fixing ring.

[0018] By adopting the above technical scheme, the hoisting pipes are arranged to facilitate the crane to hoist the waste pile head of the cast-in-place pile.

[0019] The present application has the following beneficial effects:

[0020] In the utility model, the annular isolation plate is arranged to form a horizontal isolation surface at the joint of the invalid pile head and the valid pile body, so as to position the invalid pile head, and reduce the difficulty of subsequent construction; the sleeve pipe is arranged on the outer periphery of each reinforcing bar, so that the cast-in-place concrete and the reinforcing bar are prevented from directly contacting each other, thereby facilitating the quick separation of the pile head formed by the over-poured concrete and the reinforcing bar when the pile is broken, the insertion position of the breaking nail is limited by the positioning block, the breaking nail is prevented from contacting the reinforcing bar, and the staff is prevented from damaging the pile body concrete and the reinforcing bar when the pile head of the cast-in-place pile is cut off.

[0021] The specific embodiments of the utility model are disclosed in detail with reference to the following description and drawings, and the principle of the utility model can be adopted, and it should be understood that the embodiments of the utility model are not limited in scope. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic view of the overall structure of the present application;

[0023] Figure 2 It is a schematic view of the structure of the annular isolation plate of the present application;

[0024] Figure 3 It is a schematic view of the connection structure of the sleeve pipe of the present application;

[0025] Figure 4 It is a schematic view of the local structure of the present application.

[0026] In the drawing: 1, reinforcing bar; 2, annular isolation plate; 3, flange; 4, sleeve pipe; 5, sealing pipe; 6, plug-in hole; 7, positioning block; 8, breaking nail moving groove; 9, breaking nail; 10, sealing cover; 11, connecting thread; 12, fixing ring; 13, hoisting pipe. DETAILED DESCRIPTION

[0027] With reference to the drawings and embodiments disclosed in the present application, the technical solutions in the embodiments of the present application will be described in a clear and complete manner. Obviously, the described embodiments are only some of the embodiments of the present application but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0028] As shown in Figure 1 - Figure 4 The sleeve structure for cutting off the pile head of a cast-in-place pile provided by the present embodiment includes steel bars 1 and an annular isolation plate 2. A lower surface of the annular isolation plate 2 is provided with a plurality of insertion holes 6 adapted to the steel bars 1. An upper surface of the annular isolation plate 2 is fixedly provided with a plurality of flanges 3. The annular isolation plate 2 is fixedly connected with a sleeve 4 through the flanges 3. The sleeve 4 is sleeved on the outer periphery of the steel bars 1. An upper end of the sleeve 4 is provided with a sealing cover 10. The upper surface of the annular isolation plate 2 is fixedly provided with a positioning block 7 between any two adjacent flanges 3. The positioning block 7 is slidably inserted with a breaking spike 9. In use, the annular isolation plate 2 can form a horizontal isolation surface at the junction between the invalid pile head and the valid pile body, so as to position the invalid pile head and reduce the difficulty of subsequent construction. The sleeve 4 sleeved on the outer periphery of each steel bar 1 can avoid direct contact between the cast concrete and the steel bars 1, so that the pile head formed by the over-poured concrete can be quickly separated from the steel bars 1 when the pile is broken. The insertion position of the breaking spike 9 is limited by the positioning block 7, so that the breaking spike 9 does not contact the steel bars 1, and the concrete of the pile body and the steel bars 1 are not damaged when the pile head of the cast-in-place pile is cut off.

[0029] In the present embodiment, as shown in Figure 4 The inner portion of the positioning block 7 is provided with a breaking spike moving groove 8. An end of the breaking spike moving groove 8 away from the central axis of the annular isolation plate 2 is open. The front end of the breaking spike 9 is conically arranged. The breaking spike 9 is adapted to the breaking spike moving groove 8. In use, since the breaking spike moving groove 8 is not through, the concrete can be prevented from entering the inner portion of the breaking spike moving groove 8 during the pouring of the concrete. The conical arrangement of the front end of the breaking spike 9 facilitates insertion.

[0030] In the present embodiment, as shown in Figure 3 The outer surface of the sleeve 4 is provided with a connecting thread 11 near the upper end position. The sleeve 4 is threadedly connected with the sealing cover 10 through the connecting thread 11. In use, the connecting thread 11 is arranged to facilitate the combination of the sleeve 4 and the sealing cover 10, so that the concrete can be prevented from entering the inner portion of the sleeve 4.

[0031] In the present embodiment, as shown in Figure 3As shown, the inner wall of the sleeve pipe 4 is provided with a sealing pipe 5, the height of the sealing pipe 5 is the same as the height of the sleeve pipe 4, the sealing pipe 5 is made of rubber material, and the inner wall of the sealing pipe 5 is in close contact with the outer wall of the steel bar 1. In use, the sealing pipe 5 made of rubber material has a certain elastic deformation capacity, so as to be closely attached to the outer wall of the steel bar 1, ensuring that there is no gap between the steel bar 1 and the sleeve pipe 4.

[0032] In this embodiment, as shown in Figure 1 and 3 shown, the steel bars 1, the flanges 3, the sleeve pipes 4, the sealing pipes 5, the sealing covers 10 and the steel bars 1 are the same in number and one-to-one correspondence. The steel bars 1, the flanges 3, the sleeve pipes 4, the sealing pipes 5, the sealing covers 10 and the steel bars 1 are uniformly distributed in a circular array about the central axis of the annular isolation plate 2. In use, each steel bar 1 is isolated to avoid direct contact between the poured concrete and the steel bar 1, so as to facilitate the rapid separation of the pile head formed by the over-poured concrete and the steel bar 1.

[0033] In this embodiment, as shown in Figure 3 , the upper portion of the annular isolation plate 2 is provided with two fixing rings 12, and the sleeve pipes 4 are fixedly connected together through the fixing rings 12. In use, the sleeve pipes 4 are fixedly connected together through the fixing rings 12 to form a whole, ensuring that the sleeve pipes 4 will not be shifted in position during pouring.

[0034] In this embodiment, as shown in Figure 3 , the top of the fixing ring 12 is fixedly connected with a lifting pipe 13, and the number of the lifting pipe 13 is three and the three lifting pipes 13 are uniformly distributed in a circular array at the top of the fixing ring 12. In use, the lifting pipe 13 is provided to facilitate the crane to lift the waste pile head of the bored pile.

[0035] Working principle: when the sleeve pipe structure for cutting off the pile head of the bored pile is used, the annular isolation plate 2 is provided to form a horizontal isolation surface at the intersection between the invalid pile head and the valid pile body, which is used to position the invalid pile head and can reduce the difficulty of subsequent construction. The sleeve pipe 4 is sleeved on the outer periphery of each steel bar 1, which can avoid direct contact between the poured concrete and the steel bar 1, so as to facilitate the rapid separation of the pile head formed by the over-poured concrete and the steel bar 1 when the pile is broken. The positioning block 7 is provided to limit the insertion position of the breaking nail 9, avoiding the breaking nail 9 from contacting the steel bar 1, and ensuring that the pile body concrete and the steel bar 1 will not be damaged when the pile head of the bored pile is cut off.

[0036] In the description of the utility model, it is necessary to explain that, the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the position relationship based on the position relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the utility model, it is necessary to explain that, unless otherwise expressly provided and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0038] The utility model has been described above in combination with specific embodiments, but those skilled in the art should know that these descriptions are exemplary, and are not a limitation on the protection scope of the utility model. Those skilled in the art can make various modifications and changes to the utility model according to the spirit and principle of the utility model, and these modifications and changes are also within the scope of the utility model.

Claims

1. A casing structure for cutting off the head of cast-in-place piles, comprising reinforcing bars (1) and an annular isolation plate (2), characterized in that, The lower surface of the annular isolation plate (2) is provided with several insertion holes (6) that are compatible with the reinforcing bars (1). Several flanges (3) are fixedly installed on the upper surface of the annular isolation plate (2). The annular isolation plate (2) is fixedly connected to a sleeve (4) through the flanges (3). The sleeve (4) is sleeved on the outer periphery of the reinforcing bars (1). A sealing cap (10) is provided at the upper end of the sleeve (4). A positioning block (7) is fixedly installed on the upper surface of the annular isolation plate (2) between any two adjacent flanges (3). A breaking nail (9) is slidably inserted into the interior of the positioning block (7).

2. The casing structure for cutting off the pile head of a cast-in-place pile according to claim 1, characterized in that, The positioning block (7) has a crushing nail moving groove (8) inside. The side of the crushing nail moving groove (8) away from the central axis of the annular isolation plate (2) is open. The front end of the crushing nail (9) is tapered. The crushing nail (9) is adapted to the crushing nail moving groove (8).

3. The casing structure for cutting off the pile head of a cast-in-place pile according to claim 1, characterized in that, The outer surface of the sleeve (4) is provided with a connecting thread (11) near the upper end, and the sleeve (4) is threadedly connected to the sealing cap (10) through the connecting thread (11).

4. The casing structure for cutting off the pile head of a cast-in-place pile according to claim 1, characterized in that, The inner wall of the sleeve (4) is provided with a sealing tube (5), the height of the sealing tube (5) is the same as the height of the sleeve (4), the sealing tube (5) is made of rubber material, and the inner wall of the sealing tube (5) is in contact with the outer wall of the reinforcing bar (1).

5. The casing structure for cutting off the pile head of a cast-in-place pile according to claim 4, characterized in that, The number of the steel bars (1), flanges (3), sleeves (4), sealing pipes (5), sealing caps (10) and steel bars (1) are the same and correspond one-to-one. Several of the steel bars (1), flanges (3), sleeves (4), sealing pipes (5), sealing caps (10) and steel bars (1) are evenly distributed in a circular array about the central axis of the annular isolation plate (2).

6. The casing structure for cutting off the pile head of a cast-in-place pile according to claim 1, characterized in that, Two fixing rings (12) are provided above the annular isolation plate (2), and several sleeves (4) are fixedly connected together by the fixing rings (12).

7. The casing structure for cutting off the pile head of a cast-in-place pile according to claim 6, characterized in that, The top of the fixed ring (12) is fixedly connected to a lifting pipe (13), and there are three lifting pipes (13) and the three lifting pipes (13) are evenly distributed in a circular array on the top of the fixed ring (12).

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