Cast-in-situ bored pile casing for karst cave environment

Abstract

The utility model discloses a cast-in-situ bored pile casing for a karst cave environment, and relates to the technical field of cast-in-situ pile casings, the cast-in-situ bored pile casing comprises a casing main body, the casing main body comprises an upper casing body and a lower casing body, the top position of the upper casing body is fixedly provided with a hoisting lug plate, the lower portion of the upper casing body is fixedly provided with an upper clamping block, and the lower portion of the lower casing body is fixedly provided with a lower clamping block. The upper clamping block is fixedly installed at the top of the upper cylinder body, the lower clamping block is fixedly installed at the top of the lower cylinder body, the upper clamping block and the lower clamping block are connected in a clamped mode, and the cylinder hoops are arranged on the outer sides of the upper clamping block and the lower clamping block in a sleeved mode.

Description

Technical Field

[0001] The utility model belongs to the field of cast-in-place pile casing, and particularly relates to a bored cast-in-place pile casing for a karst cave environment. Background Technique

[0002] During the process of rotary drilling cast-in-place piles, due to unstable soil quality, it is difficult to construct reinforced concrete retaining walls. Therefore, steel retaining walls are used to protect the cast-in-place piles to prevent hole collapse and avoid affecting the construction progress and safety. Steel casings are often buried to locate the pile positions to be drilled. The casing is generally a steel casing. When positioning the casing, first take the pile center as the center of the circle, and determine the casing position on the soil according to the casing radius. After the casing is in place, apply pressure to bury the casing. During the burying process, check whether the casing is vertical. If deviation is found, correct it in time. Due to the requirements of cast-in-place pile construction, the length of the casing varies according to the actual construction.

[0003] The existing casing is assembled by welding multiple cylinders. In a karst cave environment, to ensure normal construction, a large pre-tightening force is applied to it, resulting in unstable strength at the welding positions. Moreover, due to the form of welding and assembly, it will cause trouble in recycling the casing later. Therefore, the utility model proposes a bored cast-in-place pile casing for a karst cave environment here. Summary of the Invention

[0004] The utility model provides a bored cast-in-place pile casing for a karst cave environment to solve the technical problems raised in the above background technique.

[0005] To solve the above technical problems, a bored cast-in-place pile casing for a karst cave environment provided by the utility model includes a casing main body. The casing main body includes an upper cylinder and a lower cylinder. A hoisting ear plate is fixedly installed at the top position of the upper cylinder. An upper clamping block is fixedly installed below the upper cylinder. A lower clamping block is fixedly installed at the top position of the lower cylinder. The upper clamping block and the lower clamping block are clamped, and a cylinder hoop is sleeved outside the upper clamping block and the lower clamping block.

[0006] Preferably, there are multiple hoisting ear plates, and the multiple hoisting ear plates are arranged in an array, and a through hole one is opened in the middle position of the hoisting ear plate.

[0007] Preferably, a limiting column is fixedly installed above the lower clamping block. There are multiple limiting columns, and the multiple limiting columns are arranged in an array. A limiting hole is opened at the corresponding position of the upper clamping block for the limiting column, and the limiting column is clamped with the limiting hole.

[0008] Preferably, the barrel hoop includes a hoop ring. There are two hoop rings which are symmetrically arranged. Fixed ear plates are fixedly installed on the outer side of the hoop ring. A clamping groove is formed on the inner side of the hoop ring. A through hole two is formed in the middle position of the fixed ear plate. A fastening bolt is arranged in the through hole two. A nut is arranged on the outer side of the fastening bolt, and the nut meshes with the fastening bolt.

[0009] Preferably, the upper clamping block and the lower clamping block have the same height, and the width of the clamping groove is the sum of the heights of the upper clamping block and the lower clamping block.

[0010] The utility model has the following advantages compared with the prior art:

[0011] For the bored cast-in-place pile casing used in the karst cave environment of the utility model, by welding a hoisting ear plate above the upper cylinder body, it is convenient to hoist the casing main body, and it is convenient to hoist and recycle it after construction.

[0012] For the bored cast-in-place pile casing used in the karst cave environment of the utility model, during construction, the upper clamping block of the upper cylinder body and the lower clamping block of the lower cylinder body are opposed, and their limit posts are clamped with the limit holes, so that the upper cylinder body and the lower cylinder body can be connected and fixed. Furthermore, the clamping grooves of the hoop rings on both sides are corresponded with the upper clamping block and the lower clamping block. The width of the clamping groove is the sum of the heights of the upper clamping block and the lower clamping block, which can fix the vertical angle of the upper clamping block and the lower clamping block, ensuring the airtightness of their connection. Insert the fastening bolt into the through hole two and fix it with a nut. The stability is more stable than traditional welding. After construction, it is convenient to disassemble the casing main body, which is convenient for recycling and saves production costs. Description of the Drawings

[0013] Figure 1 It is a structural diagram of the bored cast-in-place pile casing used in the karst cave environment of the utility model;

[0014] Figure 2 It is a structural diagram of the casing main body in the bored cast-in-place pile casing used in the karst cave environment of the utility model;

[0015] Figure 3 It is an exploded structural diagram of the casing main body in the bored cast-in-place pile casing used in the karst cave environment of the utility model;

[0016] Figure 4 It is a structural diagram of the barrel hoop in the bored cast-in-place pile casing used in the karst cave environment of the utility model;

[0017] Reference numerals in the drawings: 1. Upper cylinder body; 2. Lower cylinder body; 3. Barrel hoop; 4. Hoisting ear plate; 5. Through hole one; 6. Upper clamping block; 7. Lower clamping block; 8. Limit post; 9. Limit hole; 10. Hoop ring; 11. Clamping groove; 12. Fixed ear plate; 13. Fastening bolt; 14. Nut; 15. Through hole two. Detailed Embodiment

[0018] Please refer to Figures 1-4 , the present utility model provides a technical solution: a bored pile casing for a karst cave environment, including a casing main body, the casing main body includes an upper cylinder 1 and a lower cylinder 2, a lifting ear plate 4 is fixedly installed at the top position of the upper cylinder 1, an upper clamping block 6 is fixedly installed below the upper cylinder 1, a lower clamping block 7 is fixedly installed at the top position of the lower cylinder 2, the upper clamping block 6 and the lower clamping block 7 are clamped, and a cylinder hoop 3 is sleeved outside the upper clamping block 6 and the lower clamping block 7.

[0019] Furthermore, there are multiple lifting ear plates 4, the multiple lifting ear plates 4 are arranged in an array, and a through hole 5 is opened at the middle position of the lifting ear plate 4.

[0020] Furthermore, a limiting column 8 is fixedly installed above the lower clamping block 7, there are multiple limiting columns 8, the multiple limiting columns 8 are arranged in an array, a limiting hole 9 is opened at the corresponding position of the upper clamping block 6 and the limiting column 8, and the limiting column 8 and the limiting hole 9 are clamped.

[0021] Furthermore, the cylinder hoop 3 includes a hoop 10, there are two hoops 10, the two hoops 10 are symmetrically arranged, a fixed ear plate 12 is fixedly installed outside the hoop 10, a clamping groove 11 is opened inside the hoop 10, a through hole 15 is opened at the middle position of the fixed ear plate 12, a fastening bolt 13 is arranged in the through hole 15, a nut 14 is arranged outside the fastening bolt 13, and the nut 14 is meshed with the fastening bolt 13.

[0022] Furthermore, the upper clamping block 6 and the lower clamping block 7 are of the same height, and the width of the clamping groove 11 is the sum of the heights of the upper clamping block 6 and the lower clamping block 7.

[0023] Working principle:

[0024] During construction, the upper clamping block 6 of the upper cylinder 1 and the lower clamping block 7 of the lower cylinder 2 are opposed, and the limiting column 8 and the limiting hole 9 are clamped, so that the upper cylinder 1 and the lower cylinder 2 can be connected and fixed. Furthermore, the clamping grooves 11 of the two hoop rings 10 on both sides are corresponding to the upper clamping block 6 and the lower clamping block 7. The width of the clamping groove 11 is the sum of the heights of the upper clamping block 6 and the lower clamping block 7, which can fix the upper clamping block 6 and the lower clamping block 7 at a vertical angle, ensuring the airtightness of their connection. Insert the fastening bolt 13 into the through hole 15 and fix it with the nut 14. The stability is more stable than traditional welding. After construction, it is convenient to disassemble the casing main body, which is convenient for recycling and saves production costs. By welding a lifting ear plate 4 above the upper cylinder 1, it is convenient to lift the casing main body and also convenient to lift and recycle it after construction.

Claims

1. A bored pile casing for a karst cave environment, comprising a casing body, characterized in that: The casing body comprises an upper casing (1) and a lower casing (2); a lifting ear plate (4) is fixedly mounted on the top of the upper casing (1); an upper clamping block (6) is fixedly mounted on the bottom of the upper casing (1); and a lower clamping block (7) is fixedly mounted on the top of the lower casing (2); the upper clamping block (6) and the lower clamping block (7) are clamped together; and casing hoops (3) are sleeved on the outer sides of the upper clamping block (6) and the lower clamping block (7).

2. A bored pile casing for a karst cave environment according to claim 1, characterized in that: A plurality of the lifting ear plates (4) are provided, and the plurality of the lifting ear plates (4) are arranged in an array, and a through hole (5) is provided in the middle of the lifting ear plate (4).

3. The bored pile casing for use in a karst cave environment according to claim 1, characterized in that: A limiting column (8) is fixedly installed above the lower clamping block (7), a plurality of the limiting columns (8) are provided, and the plurality of limiting columns (8) are arranged in an array, and limiting holes (9) are provided at positions corresponding to the limiting columns (8) of the upper clamping block (6), and the limiting columns (8) are clamped with the limiting holes (9).

4. The bored pile casing for use in a karst cave environment according to claim 1, characterized in that: The tube hoop (3) comprises a hoop ring (10), wherein two hoop rings (10) are provided and the two hoop rings (10) are symmetrically arranged, a fixing ear plate (12) is fixedly mounted on the outer side of the hoop ring (10), a clamping groove (11) is provided on the inner side of the hoop ring (10), a second through hole (15) is provided at the middle position of the fixing ear plate (12), a fastening bolt (13) is provided in the second through hole (15), a nut (14) is provided on the outer side of the fastening bolt (13), and the nut (14) is meshed with the fastening bolt (13).

5. The bored pile casing for use in a karst cave environment according to claim 4, characterized in that: The upper clamping block (6) and the lower clamping block (7) are of the same height, and the width of the clamping slot (11) is the sum of the heights of the upper clamping block (6) and the lower clamping block (7).

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