Cast-in-place pile steel casing
By designing a cast-injected pile steel casing with a multi-arc plate structure, multiple problems in the construction process of the cast-injected pile steel casing in the prior art are solved, and higher construction accuracy and bearing capacity are achieved.
Patent Information
- Application Number
- CN202420964013.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-05-07
AI Technical Summary
During the construction process, the existing cast-injected pile steel casings have problems such as inaccurate positioning, incomplete protection of orifices, unstable maintenance of mud water level, inaccurate control of pile top elevation, incomplete prevention of sediment return, inflexible direction of guiding drilling, incomplete isolation of surface water, and insufficient enhancement of bearing capacity.
A cast-in-fill pile steel casing including multiple curved plates is designed. Through the sliding installation of the curved plates and the positioning of the fastening bolts, an annular structure is formed, which increases the overall strength and stability, and facilitates disassembly and assembly through the engagement structure of bumps and grooves.
The overall strength and stability of the steel guard of the cast-injected pile is improved, the correct positioning and construction quality of the cast-injected pile is ensured, the control of the slurry water level and the prevention of sediment return are enhanced, the guidance in the drilling direction and the isolation of surface water are improved, and the bearing capacity is improved.
Smart Images
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Abstract
Description
Technical Field
[0001] This utility model relates to the field of civil engineering technology, and more specifically, to a steel casing for cast-in-place piles. Background Art
[0002] Cast-in-place piles are a common type of pile foundation widely used in civil engineering. They are formed by pouring cement or concrete underground to create a foundation that supports buildings or other engineering structures. During construction, a hole is first excavated underground, then steel reinforcement is placed into the hole, and finally, concrete or cement is poured in.
[0003] In the construction of cast-in-place piles, steel casings play an important role. They serve to position the pile, protect the borehole opening, maintain the mud level, control the pile top elevation, prevent sediment backflow, guide the drilling direction, isolate surface water, and enhance the bearing capacity.
[0004] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content
[0005] In view of the problems in the related technologies, this utility model proposes a steel casing for cast-in-place piles to overcome the above-mentioned technical problems existing in the existing related technologies.
[0006] Therefore, the specific technical solution adopted by this utility model is as follows:
[0007] A steel casing for a cast-in-place pile includes a first arc-shaped plate, a second arc-shaped plate slidably mounted on the outer side of the first arc-shaped plate, a third arc-shaped plate slidably mounted on the outer side of the second arc-shaped plate, a fourth arc-shaped plate slidably mounted on the outer side of the third arc-shaped plate, a fifth arc-shaped plate slidably mounted on the outer side of the fourth arc-shaped plate, and a sixth arc-shaped plate slidably mounted on the outer side of the fifth arc-shaped plate. Upper fixing members are installed on the outer sides of the top of the first, second, third, fourth, fifth, and sixth arc-shaped plates. A middle ring body is installed at the middle outer side of the first, second, third, fourth, fifth, and sixth arc-shaped plates. A lower ring body is installed at the lower outer side of the first, second, third, fourth, fifth, and sixth arc-shaped plates.
[0008] As a further embodiment of this utility model, a groove is provided on one side of each of the first, second, third, fourth, fifth, and sixth arc-shaped plates, and a protrusion is fixedly connected to the other side of each of the first, second, third, fourth, fifth, and sixth arc-shaped plates.
[0009] As a further embodiment of this utility model, the first arc-shaped plate, the second arc-shaped plate, the third arc-shaped plate, the fourth arc-shaped plate, the fifth arc-shaped plate and the sixth arc-shaped plate are connected end to end in a ring, and bolt holes are provided on the inner side of the first arc-shaped plate, the second arc-shaped plate, the third arc-shaped plate, the fourth arc-shaped plate, the fifth arc-shaped plate and the sixth arc-shaped plate.
[0010] As a further embodiment of this utility model, a lifting ring is fixedly connected to the top of the upper fixing member, and there are 5 lifting rings. A first fastening bolt is installed on the inner side of the lifting ring, and there are 6 first fastening bolts.
[0011] As a further embodiment of this utility model, a second fastening bolt is installed on the inner side of the central ring body. There are six second fastening bolts, and the first arc plate, the second arc plate, the third arc plate, the fourth arc plate, the fifth arc plate and the sixth arc plate are all spirally connected to the second fastening bolts.
[0012] As a further embodiment of this utility model, a third fastening bolt is installed on the inner side of the lower ring body, and the first arc plate, the second arc plate, the third arc plate, the fourth arc plate, the fifth arc plate and the sixth arc plate are all spirally connected to the third fastening bolt.
[0013] As a further embodiment of this utility model, a drain outlet is provided at the upper inner side of the first arc-shaped plate, and the drain outlet is square in shape.
[0014] The beneficial effects of the utility model are:
[0015] This utility model features a set of first, second, third, fourth, fifth, and sixth arc-shaped plates, an upper fixing component, a middle ring body, and a lower ring body. The first, second, third, fourth, fifth, and sixth arc-shaped plates are connected end to end, with protrusions and grooves on them engaging with each other. Multiple sets of arc-shaped plates form a ring. The middle ring body, lower ring body, and upper fixing component are installed on the outer side and positioned by fastening bolts to improve overall strength. During installation, the rope is tied to the lifting ring on the upper fixing component, allowing it to be lowered into the bored pile hole. This structure can be freely disassembled and assembled, facilitating transportation and making it more convenient to use. Attached Figure Description
[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0017] Figure 1This is a schematic diagram of the overall structure of a cast-in-place pile steel casing according to an embodiment of the present utility model;
[0018] Figure 2 This is a schematic diagram of the overall structure of the first arc-shaped plate of a cast-in-place pile steel casing according to an embodiment of the present utility model;
[0019] Figure 3 This is a schematic diagram of the overall structure of the third arc-shaped plate of a steel casing for a cast-in-place pile according to an embodiment of the present utility model;
[0020] Figure 4 This is a schematic diagram of the overall structure of the upper fixing component of a cast-in-place pile steel casing according to an embodiment of the present utility model;
[0021] Figure 5 This is a schematic diagram of the overall structure of the middle ring of a cast-in-place pile steel casing according to an embodiment of the present utility model;
[0022] Figure 6 This is a schematic diagram of the assembly of the arc-shaped plate of a cast-in-place pile steel casing according to an embodiment of the present utility model.
[0023] In the picture:
[0024] 1. First arc-shaped plate; 2. Second arc-shaped plate; 3. Third arc-shaped plate; 4. Fourth arc-shaped plate; 5. Fifth arc-shaped plate; 6. Sixth arc-shaped plate; 7. Groove; 8. Protrusion; 9. Drain outlet; 10. Upper fixing component; 11. Lifting ring; 12. First fastening bolt; 13. Middle ring body; 14. Second fastening bolt; 15. Lower ring body; 16. Third fastening bolt. Detailed Implementation
[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0026] According to an embodiment of the present invention, a steel casing for cast-in-place piles is provided.
[0027] Please refer to the instruction manual appendix. Figure 1-6According to an embodiment of the present invention, a steel casing for a cast-in-place pile includes a first arc-shaped plate 1, a second arc-shaped plate 2 slidably mounted on the outer side of the first arc-shaped plate 1, a third arc-shaped plate 3 slidably mounted on the outer side of the second arc-shaped plate 2, a fourth arc-shaped plate 4 slidably mounted on the outer side of the third arc-shaped plate 3, a fifth arc-shaped plate 5 slidably mounted on the outer side of the fourth arc-shaped plate 4, and a sixth arc-shaped plate 6 slidably mounted on the outer side of the fifth arc-shaped plate 5. An upper fixing member 10 is installed on the outer side of the top of the first arc-shaped plate 1, the second arc-shaped plate 2, the third arc-shaped plate 3, the fourth arc-shaped plate 4, the fifth arc-shaped plate 5, and the sixth arc-shaped plate 6. A middle ring body 13 is installed at the middle outer side of the first arc-shaped plate 1, the second arc-shaped plate 2, the third arc-shaped plate 3, the fourth arc-shaped plate 4, the fifth arc-shaped plate 5, and the sixth arc-shaped plate 6. A lower ring body 15 is installed at the lower outer side of the first arc-shaped plate 1, the second arc-shaped plate 2, the third arc-shaped plate 3, the fourth arc-shaped plate 4, the fifth arc-shaped plate 5, and the sixth arc-shaped plate 6.
[0028] When using this set of cast-in-place pile steel casings, the first arc plate 1, the second arc plate 2, the third arc plate 3, the fourth arc plate 4, the fifth arc plate 5, and the sixth arc plate 6 are connected end to end. The protrusion 8 on one arc plate engages with the groove 7 on another arc plate, so that the first arc plate 1, the second arc plate 2, the third arc plate 3, the fourth arc plate 4, the fifth arc plate 5, and the sixth arc plate 6 form a ring. The lower ring body 15, the middle ring body 13, and the upper fixing piece 10 are respectively fitted onto the lower, middle, and upper parts of the steel casing, and the first fastening bolt 12, the second fastening bolt 14, and the third fastening bolt 16 are screwed onto the arc plates to make the whole more stable. The rope is tied inside the lifting ring 11, and the steel casing is lowered into the borehole by the crane. The mud and water generated inside the borehole are discharged outward through the drain outlet 9 and enter the drainage ditch for discharge.
[0029] In one embodiment, please refer to the appendix to the specification. Figure 1-6 As a further embodiment of this utility model, a groove 7 is provided on one side of each of the first arc plate 1, the second arc plate 2, the third arc plate 3, the fourth arc plate 4, the fifth arc plate 5, and the sixth arc plate 6, and a protrusion 8 is fixedly connected to the other side of each of the first arc plate 1, the second arc plate 2, the third arc plate 3, the fourth arc plate 4, the fifth arc plate 5, and the sixth arc plate 6.
[0030] The protrusion 8 on the first arc plate engages with the groove 7 on the second arc plate, and the protrusion 8 on the last arc plate combines with the groove 7 on the first arc plate to form a ring shape.
[0031] Please refer to the appendix of the specification for another embodiment. Figure 1-6As a further embodiment of this utility model, the first arc plate 1, the second arc plate 2, the third arc plate 3, the fourth arc plate 4, the fifth arc plate 5 and the sixth arc plate 6 are connected end to end in a ring, and bolt holes are provided on the inner side of the first arc plate 1, the second arc plate 2, the third arc plate 3, the fourth arc plate 4, the fifth arc plate 5 and the sixth arc plate 6.
[0032] The steel casing will become more compact under external pressure, ensuring sufficient overall strength.
[0033] In one embodiment, please refer to the appendix to the specification. Figure 1-6 As a further embodiment of this utility model, the top end of the upper fixing member 10 is fixedly connected with a lifting ring 11, there are 5 lifting rings 11, and the inner side of the lifting ring 11 is equipped with a first fastening bolt 12, there are 6 first fastening bolts 12.
[0034] The rope is threaded through the lifting ring 11, so that the steel casing can be raised and lowered by the rope.
[0035] Please refer to the appendix of the specification for another embodiment. Figure 1-6 As a further embodiment of this utility model, the upper inner side of the first arc-shaped plate 1 is provided with a drain outlet 9, which is square in shape.
[0036] The mud and water inside the steel casing are discharged outward through the drain outlet 9, giving the mud and water a directional flow so that it can enter the drainage ditch for centralized discharge.
[0037] In one embodiment, please refer to the appendix to the specification. Figure 1-6 As a further embodiment of this utility model, a second fastening bolt 14 is installed on the inner side of the middle ring body 13. There are six second fastening bolts 14. The first arc plate 1, the second arc plate 2, the third arc plate 3, the fourth arc plate 4, the fifth arc plate 5, and the sixth arc plate 6 are all spirally connected to the second fastening bolts 14. A third fastening bolt 16 is installed on the inner side of the lower ring body 15. The first arc plate 1, the second arc plate 2, the third arc plate 3, the fourth arc plate 4, the fifth arc plate 5, and the sixth arc plate 6 are all spirally connected to the third fastening bolt 16.
[0038] The middle ring 13 is positioned to the arc plate by the second fastening bolt 14, and the lower ring 15 is positioned to the arc plate by the third fastening bolt 16.
[0039] Steel casings play a crucial role in the construction of cast-in-place piles, primarily fulfilling the following functions: 1. Positioning: Steel casings ensure the correct positioning of the pile, preventing deviations and guaranteeing the accuracy of the entire pile foundation project. 2. Borehole Protection: Covering the borehole opening, steel casings prevent debris and soil from entering the hole, while also protecting the borehole wall from external pressure and preventing collapse. 3. Mud Level Maintenance: During drilling, steel casings help maintain the mud level within the hole. The pressure of the mud prevents borehole wall collapse and also helps remove drill cuttings from the hole. 4. Pile Top Elevation Control: Serving as a reference point, steel casings help accurately control the pile top elevation, ensuring project quality. 5. Preventing Backflow of Sediment: During concrete pouring, steel casings prevent sediment from rising with the concrete, ensuring the quality of the concrete in the pile body. 6. Drilling Direction Guidance: During drilling, steel casings guide the drill bit, ensuring the straightness and flatness of the borehole. 7. Isolation of surface water: Steel casings can also isolate surface water, preventing water from entering the hole and affecting the drilling and grouting process. 8. Enhanced bearing capacity: Steel casings themselves possess a certain strength and rigidity, serving as a medium for transferring bearing capacity and improving the bearing capacity of the cast-in-place pile.
[0040] When using this set of cast-in-place pile steel casings, the first arc plate 1, the second arc plate 2, the third arc plate 3, the fourth arc plate 4, the fifth arc plate 5, and the sixth arc plate 6 are connected end to end. The protrusion 8 on one arc plate engages with the groove 7 on another arc plate, so that the first arc plate 1, the second arc plate 2, the third arc plate 3, the fourth arc plate 4, the fifth arc plate 5, and the sixth arc plate 6 form a ring. The lower ring body 15, the middle ring body 13, and the upper fixing piece 10 are respectively fitted onto the lower, middle, and upper parts of the steel casing, and the first fastening bolt 12, the second fastening bolt 14, and the third fastening bolt 16 are screwed onto the arc plates to make the whole more stable. The rope is tied inside the lifting ring 11, and the steel casing is lowered into the borehole by the crane. The mud and water generated inside the borehole are discharged outward through the drain outlet 9 and enter the drainage ditch for discharge. The cast-in-place pile steel casing can be disassembled for easy transportation.
[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A cast-in-place pile steel casing, comprising a first arc-shaped plate (1), characterized in that: The outer side of the first curved plate (1) is slidably mounted with a second curved plate (2), the outer side of the second curved plate (2) is slidably mounted with a third curved plate (3), the outer side of the third curved plate (3) is slidably mounted with a fourth curved plate (4), the outer side of the fourth curved plate (4) is slidably mounted with a fifth curved plate (5), the outer side of the fifth curved plate (5) is slidably mounted with a sixth curved plate (6), the first curved plate (1), the second curved plate (2), the third curved plate (3), the fourth curved plate (4), the An upper fixing member (10) is installed on the outer side of the top end of the fifth arc plate (5) and the sixth arc plate (6); a middle ring body (13) is installed on the middle end of the outer side of the first arc plate (1), the second arc plate (2), the third arc plate (3), the fourth arc plate (4), the fifth arc plate (5) and the sixth arc plate (6); and a lower ring body (15) is installed on the lower end of the outer side of the first arc plate (1), the second arc plate (2), the third arc plate (3), the fourth arc plate (4), the fifth arc plate (5) and the sixth arc plate (6).
2. A cast-in-place pile steel casing according to claim 1, characterized in that: One side of the first curved plate (1), the second curved plate (2), the third curved plate (3), the fourth curved plate (4), the fifth curved plate (5) and the sixth curved plate (6) is provided with a groove (7), and the other side of the first curved plate (1), the second curved plate (2), the third curved plate (3), the fourth curved plate (4), the fifth curved plate (5) and the sixth curved plate (6) is fixedly connected with a protrusion (8).
3. The cast-in-place pile steel casing according to claim 1, characterized in that: The first arc plate (1), the second arc plate (2), the third arc plate (3), the fourth arc plate (4), the fifth arc plate (5) and the sixth arc plate (6) are connected end to end in a ring shape, and bolt holes are provided on the inner sides of the first arc plate (1), the second arc plate (2), the third arc plate (3), the fourth arc plate (4), the fifth arc plate (5) and the sixth arc plate (6).
4. The cast-in-place pile steel casing according to claim 1, characterized in that: The top end of the upper fixing member (10) is fixedly connected with a lifting ring (11), and five lifting rings (11) are provided. The inner side of the lifting ring (11) is installed with a first fastening bolt (12), and six first fastening bolts (12) are provided.
5. The cast-in-place pile steel casing according to claim 1, characterized in that: A second fastening bolt (14) is installed on the inner side of the middle ring body (13), and six second fastening bolts (14) are provided. The first arc plate (1), the second arc plate (2), the third arc plate (3), the fourth arc plate (4), the fifth arc plate (5) and the sixth arc plate (6) are all spirally connected to the second fastening bolts (14).
6. The cast-in-place pile steel casing according to claim 1, characterized in that: A third fastening bolt (16) is installed on the inner side of the lower ring body (15), and the first arc plate (1), the second arc plate (2), the third arc plate (3), the fourth arc plate (4), the fifth arc plate (5) and the sixth arc plate (6) are all screwed together with the third fastening bolt (16).
7. The cast-in-place pile steel casing according to claim 1, characterized in that: A drain port (9) is provided at the inner upper end of the first arc-shaped plate (1), and the drain port (9) is arranged in a square shape.