Engineering pile foundation pile casing

Abstract

The utility model discloses an engineering pile foundation pile casing which comprises a casing body which comprises at least two pile casing units, the adjacent pile casing units are spliced in the height direction of the casing body, and adjustment in the height direction of the casing body is achieved; the pile casing unit comprises a pile casing part and an adjusting part, the pile casing part and the adjusting part are connected to form a cylindrical structure, and the connecting end of the pile casing part and the adjusting part circumferentially moves on the adjusting part so as to adjust the inner diameter of the pile casing unit; the pile casing part and the adjusting part are each of a semi-surrounding structure. The height and the inner diameter of the device can be adjusted so that the device can be suitable for different engineering scenes.

Description

Technical Field

[0001] This application relates to a protective casing for engineering pile foundations, belonging to the field of building engineering technology. Background Technology

[0002] In the field of construction engineering, pile foundations, as a core support form to ensure the stability and safety of building structures, are widely used in various large-scale projects. The casing used in pile foundation construction is a key element in ensuring smooth construction progress and pile quality. In actual engineering projects, different projects have diverse requirements for pile foundation specifications. Even within the same project, due to geological differences, design changes, and other factors, there may be different requirements for the inner diameter and height of the casing. The fixed specifications of traditional casings make them difficult to adapt to such complex and varied construction scenarios, resulting in a significant reduction in applicability. During construction, mismatched inner diameters and heights can also affect construction safety and efficiency. For example, an improper inner diameter can lead to material waste, increased installation difficulty, and the need to remake casings suitable for the pile diameter; an unsuitable height can affect the protection range when the pile head is loaded, easily causing pile head splitting during loading. Therefore, developing an engineering pile foundation casing that can flexibly adjust its inner diameter and height is of crucial practical significance for improving the versatility, adaptability, and economy of pile foundation construction. Utility Model Content

[0003] According to one aspect of this application, an engineering pile foundation casing is provided, the casing having adjustable height and inner diameter to suit different engineering scenarios.

[0004] A casing for engineering pile foundations, characterized in that it comprises:

[0005] The cylinder includes at least two protective sleeve units, which are spliced ​​together along the height direction of the cylinder to achieve adjustment of the height direction of the cylinder;

[0006] The protective sleeve unit includes a protective sleeve section and an adjusting section. The protective sleeve section and the adjusting section are connected to form a cylindrical structure. The connecting end of the protective sleeve section and the adjusting section moves circumferentially in the adjusting section to adjust the inner diameter of the protective sleeve unit.

[0007] Both the protective sleeve and the adjustment section are semi-enclosed structures.

[0008] Furthermore, one end of the protective sleeve unit is provided with a plurality of snap-fit ​​parts, which extend outward along the height direction of the protective sleeve unit and are evenly and circumferentially distributed at the end of the protective sleeve unit.

[0009] The other end of the casing unit is provided with multiple snap-fit ​​grooves that are adapted to the snap-fit ​​part.

[0010] Furthermore, the end of the casing unit includes a contact side and a snap-fit ​​side arranged from the inside out;

[0011] Both the snap-fit ​​part and the snap-fit ​​groove are located on the snap-fit ​​side of the sleeve unit.

[0012] Furthermore, a first connecting lug is provided on the connecting end where the protective sleeve part connects to the adjusting part, and a second connecting lug is provided on the connecting end where the adjusting part connects to the protective sleeve part;

[0013] The first connecting ear extends toward the adjustment part, the second connecting ear extends toward the protective sleeve part, and the first connecting ear is located inside the second connecting ear;

[0014] The first connecting lug and the second connecting lug are connected by bolts. By adjusting the axial tension of the bolts, the sleeve part is moved circumferentially in the adjusting part to adjust the inner diameter of the sleeve unit.

[0015] Furthermore, an isolation pad is provided between adjacent first and second connecting ears.

[0016] The beneficial effects that this application can produce include:

[0017] The engineering pile foundation casing provided in this application comprises at least two casing units spliced ​​along the height direction of the casing. The height is flexibly adjustable to adapt to changes in pile foundation depth under different geological conditions and engineering requirements, improving versatility and applicability. The connection end between the casing section and the adjustment section of the casing unit can move circumferentially to adjust the inner diameter, accurately matching various pile diameters and ensuring the accuracy and quality of pile foundation construction. The casing section and the adjustment section adopt a semi-enclosed structure, which greatly simplifies the installation and disassembly process, improves construction efficiency, reduces costs, and reduces construction risks. The overall structure is flexible, allowing construction personnel to quickly adjust the casing height and inner diameter, shortening the construction cycle and ensuring the verticality and stability of the pile foundation. Furthermore, the adjustable height and inner diameter avoid waste of casing size, reduce procurement costs, simplify the process, reduce labor and machinery costs, and effectively control the overall project investment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an engineering pile foundation casing according to one embodiment of this application;

[0019] List of components and reference numerals: 1-Shell unit; 2-Shell section; 3-Adjustment section; 4-Snap-fit ​​section; 5-Snap-fit ​​groove; 6-First connecting lug; 7-Second connecting lug; 8-Bolt. Detailed Implementation

[0020] The present application is described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

[0021] See Figure 1 A type of casing for engineering pile foundations, characterized in that it comprises:

[0022] The cylinder includes at least two protective cylinder units 1, which are joined together along the height direction of the cylinder to achieve adjustment of the height direction of the cylinder;

[0023] The protective sleeve unit 1 includes a protective sleeve part 2 and an adjusting part 3. The protective sleeve part 2 and the adjusting part 3 are connected to form a cylindrical structure. The connecting end of the protective sleeve part 2 and the adjusting part 3 moves circumferentially in the adjusting part 3 to adjust the inner diameter of the protective sleeve unit 1.

[0024] Both the protective sleeve 2 and the adjustment part 3 are semi-enclosed structures.

[0025] Specifically, the casing is composed of at least two casing units 1 spliced ​​together. This splicing method allows adjacent casing units 1 to be connected along the height direction of the casing, thus enabling flexible adjustment of the casing height according to actual engineering needs. For example, in projects with complex geological conditions and varying pile foundation depth requirements, the casing height can be easily changed by increasing or decreasing the number of casing units 1 to meet the requirements of different pile foundation construction. Each casing unit 1 consists of a casing section 2 and an adjusting section 3, which are connected to form a cylindrical structure. Both the casing section 2 and the adjusting section 3 are semi-enclosed structures. This design ensures the overall strength of the casing unit 1 while providing the possibility of inner diameter adjustment. The connection end between the casing section 2 and the adjusting section 3 can move on the adjusting section 3, thereby enabling adjustment of the inner diameter of the casing unit 1. For example, when encountering changes in pile diameter, simply adjusting the connection position between the casing section 2 and the adjusting section 3 allows the inner diameter of the casing unit 1 to adapt to the new pile diameter requirements, improving the versatility and adaptability of the casing.

[0026] Therefore, by splicing the casing unit 1, the height of the casing can be adjusted quickly and accurately, reducing the time and cost of redesigning and manufacturing the casing due to changes in pile depth, and improving construction efficiency. The adjustable inner diameter design of the casing unit 1 allows it to be used for pile foundation construction of different diameters, eliminating the need to prepare multiple specifications of casings for different pile diameters, reducing project costs, and facilitating the storage and transportation of the casing. Both the casing section 2 and the adjustment section 3 are semi-enclosed structures, ensuring both adjustment functionality and the overall strength and stability of the casing unit 1, effectively protecting the pile foundation and preventing problems such as borehole wall collapse.

[0027] In actual construction, the height of each casing unit is generally 10-20cm, and the inner diameter of the casing unit is generally 45cm-65cm, with a variation range of 20cm.

[0028] It is worth noting that the protective sleeve can be made of iron plate bent into the shape shown below. Figure 1In practical applications, choosing an appropriate thickness of iron plate is crucial for the structure shown. If the iron plate is too thin, it may not be able to withstand sufficient load and will easily bend; while if the iron plate is too thick, it may increase unnecessary weight and cost, and may also lead to a situation where it is not easy to deform.

[0029] Meanwhile, the arc length of the adjustment part should meet the variation range of the protective sleeve unit.

[0030] One end of the casing unit 1 is provided with a plurality of snap-fit ​​parts 4. The snap-fit ​​parts 4 extend outward along the height direction of the casing unit 1 and are evenly and circumferentially distributed at the end of the casing unit 1.

[0031] The other end of the sleeve unit 1 is provided with a plurality of snap-fit ​​grooves 5 adapted to the snap-fit ​​part 4.

[0032] Specifically, one end of the protective casing unit 1 is provided with multiple locking parts 4, which extend outward along the height direction of the protective casing unit 1. This extension direction design allows the locking parts 4 to be smoothly inserted into the corresponding structures of adjacent protective casing units 1 during splicing, facilitating the splicing operation. The locking parts 4 are evenly and circumferentially distributed at the ends of the protective casing units 1. The even distribution ensures that the force in each direction is more balanced during splicing, avoiding deformation or damage to the protective casing unit 1 due to excessive local force. The circumferential distribution ensures that adjacent protective casing units 1 can achieve omnidirectional connection during splicing, enhancing the stability and firmness of the splicing. The other end of the protective casing unit 1 is provided with multiple locking grooves 5, the number of which corresponds to the number of locking parts 4. This correspondence ensures that each locking part 4 can find a matching locking groove 5, thereby achieving precise splicing between protective casing units 1. The snap-fit ​​groove 5 is adapted to the snap-fit ​​part 4, meaning that the shape, size, and structure of the snap-fit ​​groove 5 match the snap-fit ​​part 4. During splicing, the snap-fit ​​part 4 can be tightly inserted into the snap-fit ​​groove 5, forming a reliable connection. This adaptability design not only improves the splicing accuracy but also enhances the overall strength after splicing, enabling the casing to better withstand various external forces during construction. In actual construction, the end with the snap-fit ​​part 4 is located below the casing unit 1, and the end with the snap-fit ​​groove 5 is located above the casing unit 1, ensuring flatness during construction.

[0033] It is worth noting that the design of the snap-fit ​​part 4 and the snap-fit ​​groove 5 makes the splicing operation of the casing unit 1 simple and quick. Construction workers only need to align the snap-fit ​​part 4 of one casing unit 1 with the snap-fit ​​groove 5 of another casing unit 1 and then insert it to complete the splicing, greatly shortening the construction time. Due to the uniform circumferential distribution and mutually adaptable design of the snap-fit ​​part 4 and the snap-fit ​​groove 5, the spliced ​​casing units 1 are firmly connected and not easily loosened. During pile foundation construction, the casing needs to withstand various external forces such as soil pressure and mud pressure. This stable connection can effectively ensure the integrity of the casing and prevent displacement or deformation due to weak connections, thereby ensuring the quality and safety of pile foundation construction. The snap-fit ​​structure design ensures that the casing unit 1 will not be damaged during splicing and disassembly, and the casing unit 1 can be reused multiple times. This not only reduces project costs but also conforms to the concepts of environmental protection and sustainable development.

[0034] The locking part 4 and the locking groove 5 can be connected in a mortise and tenon manner to ensure the stability of the connection. When disassembly is required, since the sleeve part 2 and the adjusting part 3 are both semi-enclosed structures, the adjusting part 3 of one of the sleeve units 1 can be contracted to tighten it in the axial direction, so that the locking part 4 and the locking groove 5 can be separated, thereby making its height adjustment structure and inner diameter adjustment structure have linkage.

[0035] The end of the protective sleeve unit 1 includes a contact side and a snap-fit ​​side arranged from the inside out;

[0036] Both the snap-fit ​​part 4 and the snap-fit ​​groove 5 are provided on the snap-fit ​​side of the protective sleeve unit 1.

[0037] Specifically, the contact side is located on the inner side of the end of the casing unit 1. During pile foundation construction, the contact side mainly comes into direct contact with the soil and mud inside the pile hole. It needs to have a certain strength and wear resistance to withstand the friction and extrusion forces of the soil and mud, ensuring the stability of the casing inside the hole and preventing problems such as casing tilting and displacement due to damage to the contact side, thereby affecting the verticality and quality of the pile foundation. The snap-fit ​​side is located on the outer side of the end of the casing unit 1 and is the main load-bearing area for the snap-fit ​​structure and splicing operation. The snap-fit ​​side provides a reasonable installation position and space for the snap-fit ​​part 4 and the snap-fit ​​groove 5, ensuring that adjacent casing units 1 can be accurately and firmly spliced. At the same time, the structural strength of the snap-fit ​​side also needs to meet the overall stress requirements after splicing to withstand various external forces that may occur during construction. Among them, both the casing part and the adjustment part are equipped with snap-fit ​​parts and snap-fit ​​grooves to form a stable splicing effect.

[0038] Furthermore, both the snap-fit ​​part 4 and the snap-fit ​​groove 5 are located on the snap-fit ​​side of the casing unit 1, making the splicing operation more convenient and intuitive. Construction personnel can operate directly on the outside of the casing unit 1 during splicing, without needing to penetrate deep into the casing, thus improving construction efficiency and safety. In addition, this arrangement facilitates the inspection and maintenance of the snap-fit ​​structure and splicing quality, allowing for timely detection and resolution of potential problems. The rational layout of the snap-fit ​​part 4 and the snap-fit ​​groove 5 on the snap-fit ​​side ensures a tight and stable connection between adjacent casing units 1 after splicing. After the snap-fit ​​part 4 is inserted into the snap-fit ​​groove 5, the interaction force between the two can be effectively transferred and dispersed, enabling the casing as a whole to better withstand external forces during construction, such as earth pressure, mud pressure, and the impact force of pile driving equipment. Simultaneously, this connection method also prevents leakage at the splicing point of the casing unit 1, ensuring a stable mud level in the pile hole and facilitating the smooth progress of pile foundation construction. The layered design of the contact side and the snap-fit ​​side allows different parts of the casing unit 1 to focus on their respective functions, improving the overall performance of the casing. The contact side focuses on the interaction with the environment inside the pile hole, while the snap-fit ​​side focuses on the splicing and connection between casing units 1. Together, they ensure the quality and safety of pile foundation construction. The snap-fit ​​structure and position design make the splicing operation of casing units 1 simple and easy, reducing construction difficulty and the technical requirements for construction personnel. At the same time, it also reduces uncertainties in the construction process, improving construction efficiency and quality. This layered and snap-fit ​​structure design allows the casing to adapt to different geological conditions and construction requirements. By adjusting the number and splicing method of casing units 1, the height and diameter of the casing can be flexibly changed to meet the needs of different pile foundation constructions.

[0039] A first connecting lug 6 is provided on the connecting end where the protective sleeve part 2 connects to the adjusting part 3, and a second connecting lug 7 is provided on the connecting end where the adjusting part 3 connects to the protective sleeve part 2;

[0040] The first connecting ear 6 extends toward the adjustment part 3, the second connecting ear 7 extends toward the protective sleeve part 2, and the first connecting ear 6 is located inside the second connecting ear 7;

[0041] The first connecting ear 6 and the second connecting ear 7 are connected by bolts 8. By adjusting the axial tension of the bolts 8, the sleeve part 2 is moved circumferentially in the adjusting part 3 to adjust the inner diameter of the sleeve unit 1.

[0042] Specifically, the first connecting ear 6 is located at the connection end where the sleeve portion 2 connects to the adjusting portion 3, and extends towards the adjusting portion 3. This extension design allows the first connecting ear 6 to fit more tightly with the related structure of the adjusting portion 3, providing a basis for subsequent connection and adjustment operations. The second connecting ear 7 is located at the connection end where the adjusting portion 3 connects to the sleeve portion 2, and extends towards the sleeve portion 2. The extension direction of the second connecting ear 7 corresponds to that of the first connecting ear 6, facilitating an effective connection between the two. The first connecting ear 6 is located inside the second connecting ear 7; this nested positional relationship helps improve the stability and compactness of the connection.

[0043] Furthermore, the first connecting lug 6 and the second connecting lug 7 are connected by bolts 8. Bolt 8 connection is a common and reliable connection method, with advantages such as convenient installation, easy disassembly, and high connection strength. Fastening the two connecting lugs together with bolts 8 ensures the stability of the casing 2 and the adjusting part 3 at the connection point, allowing the casing unit 1 to withstand various external forces during construction without loosening or separating. By adjusting the axial tension of bolts 8, the casing 2 can move on the adjusting part 3, thereby adjusting the inner diameter of the casing unit 1. When the axial tension of bolts 8 is increased, the clamping force between the first connecting lug 6 and the second connecting lug 7 increases, and the distance between the first connecting lug 6 and the second connecting lug 7 decreases. Under appropriate external force, the casing 2 can slide along the adjusting part 3, changing the inner diameter of the casing unit 1. This method of adjusting the inner diameter by adjusting the axial tension of bolts 8 is simple and flexible, and can meet the construction needs of different pile diameters. In this application, in the original state, the two first connecting ears 6 are close to each other, which is also the state where the inner diameter of the casing is at its smallest. When it is necessary to increase the inner diameter of the casing, the axial tensile force of the bolt 8 is increased. At the same time, the distance between the connected first connecting ears 6 and the second connecting ear 7 decreases, and the distance between the two first connecting ears 6 increases. When the connected first connecting ears 6 and the second connecting ear 7 are close to each other and the distance is at its smallest, the inner diameter of the casing is at its largest.

[0044] An isolation pad is provided between adjacent first connecting ear 6 and second connecting ear 7.

[0045] Specifically, during adjustment, an isolation pad is placed between adjacent first connecting ears 6 and second connecting ears 7 to fill these gaps, ensuring a tight fit between the connecting parts and eliminating the adverse effects of the gaps.

[0046] Under normal circumstances, the distance between the two first connecting ears of the casing does not affect the construction process. If necessary, other plates of the same material as the casing can be inserted into the distance, wherein the thickness of the plate is consistent with the extension height of the first connecting ears.

[0047] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A casing for engineering pile foundations, characterized in that, include: The cylinder includes at least two protective cylinder units (1), which are spliced ​​together along the height direction of the cylinder to achieve adjustment of the height direction of the cylinder; The sleeve unit (1) includes a sleeve part (2) and an adjustment part (3). The sleeve part (2) and the adjustment part (3) are connected to form a cylindrical structure. The connection end of the sleeve part (2) and the adjustment part (3) moves circumferentially on the adjustment part (3) to adjust the inner diameter of the sleeve unit (1). Both the protective sleeve (2) and the adjustment part (3) are semi-enclosed structures.

2. The casing for engineering pile foundations according to claim 1, characterized in that, One end of the casing unit (1) is provided with a plurality of snap-fit ​​parts (4), the snap-fit ​​parts (4) extend outward along the height direction of the casing unit (1), and the snap-fit ​​parts (4) are evenly and circumferentially distributed at the end of the casing unit (1); The other end of the sleeve unit (1) is provided with a plurality of snap-fit ​​grooves (5) that are adapted to the snap-fit ​​part (4).

3. The casing for engineering pile foundations according to claim 2, characterized in that, The end of the sleeve unit (1) includes a contact side and a snap-fit ​​side arranged from the inside out; Both the snap-fit ​​part (4) and the snap-fit ​​groove (5) are provided on the snap-fit ​​side of the sleeve unit (1).

4. The engineering pile foundation casing according to claim 1, characterized in that, A first connecting ear (6) is provided on the connecting end of the sleeve part (2) and the adjusting part (3), and a second connecting ear (7) is provided on the connecting end of the adjusting part (3) and the sleeve part (2); The first connecting ear (6) extends toward the adjustment part (3), the second connecting ear (7) extends toward the protective sleeve part (2), and the first connecting ear (6) is located inside the second connecting ear (7); The first connecting ear (6) and the second connecting ear (7) are connected by bolts (8). The inner diameter of the protective sleeve unit is adjusted by adjusting the axial tension of the bolts (8) to move the sleeve part (2) circumferentially on the adjusting part (3).

5. A casing for engineering pile foundations according to claim 4, characterized in that, An isolation pad is provided between adjacent first connecting ear (6) and second connecting ear (7).

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