A sheet pile composite pile construction method

Abstract

The application discloses a sheet pile combined pile construction method and belongs to the technical field of pile foundation construction. The construction method comprises the following steps: S1: according to the soil layer attribute, the pile body sinking depth and the insertion depth and angle of the reinforcing part are determined, and a wall hole is formed in the corresponding position of the pile body; S2: the reinforcing mechanism is assembled; the reinforcing mechanism comprises a reinforcing plate, a guide device and a power device, one end of the reinforcing plate is a clamping end; the power device is electrically connected with an external power supply device; the guide device is arranged on the reinforcing plate, the power device is arranged on the side surface of the clamping end away from the reinforcing plate, and an integrated structure is formed; S3: the reinforcing mechanism is hoisted into the designated position in the pile body, the other end of the reinforcing plate is adjusted to be aligned with the wall hole, and then the power device is controlled to push the reinforcing plate to pass through the wall hole and push out the pile body. The application has the advantages of simple operation, the reinforcing plate can be punched around the pile body, the vertical bearing capacity and the horizontal bearing capacity of the pile foundation can be effectively improved, and the construction difficulty and the construction cost of the pile foundation are reduced.

Description

Technical Field

[0001] This invention belongs to the field of pile foundation construction technology, and specifically relates to a construction method for sheet pile combined piles. Background Technology

[0002] During the construction of offshore projects, multiple steel pipe piles are typically driven into the seabed, with the upper ends of the piles protruding above sea level. A foundation or similar structure is then installed on top of these piles. Similarly, in some wharves, steel pipe piles are also installed at the base of the main structure to provide structural support.

[0003] Pile foundations are a widely used foundation type for buildings, bridges, ports, offshore wind power, and other land and water structures. However, in geological conditions such as deep soft soil layers and karst caves, pile foundations often encounter problems with insufficient bearing capacity. In existing technologies, construction workers generally increase the vertical and horizontal bearing capacity of the pile foundation by increasing the pile length or diameter. However, this method tends to increase the difficulty of pile foundation construction and raise material and time costs. Summary of the Invention

[0004] In view of this, the present invention provides a construction method for sheet pile composite piles. This construction method is simple to operate. By driving reinforcing plates around the pile body, it can effectively improve the vertical and horizontal bearing capacity of the pile foundation, while reducing the difficulty and cost of pile foundation construction.

[0005] This invention is achieved through the following technical solutions:

[0006] A method for constructing sheet pile composite piles includes the following steps:

[0007] S1: Based on the soil properties, determine the pile driving depth and the insertion depth and angle of the reinforcing components, and open wall holes at the corresponding positions of the pile.

[0008] S2: Assembly of the reinforcement mechanism: The reinforcement mechanism includes a reinforcement plate, a guide device, and a power device. One end of the reinforcement plate is a locking end; the power device is electrically connected to an external power supply device; the guide device is installed on the reinforcement plate, and the power device is located on the side of the locking end away from the reinforcement plate, forming an integrated structure.

[0009] S3: Hoist the reinforcing mechanism into the designated position inside the pile body, adjust the other end of the reinforcing plate to align with the wall hole, and then control the power device to push the reinforcing plate through the wall hole until it is pushed out of the pile body.

[0010] Compared with the prior art, the present invention adds multiple reinforcing plates to the pile body and controls the end of the reinforcing plates to align with the wall hole through a guiding device. The reinforcing plate is pushed out of the pile by a power device. One end of the reinforcing plate extends away from the pile body in the soil layer, thereby increasing the side contact area between the pile body and the soil layer, thus effectively improving the bearing capacity of the pile foundation.

[0011] Further, in step S2, the guiding device includes a guide groove, at least two first telescopic rods, and an observation component; the guide groove is composed of two opposing limiting plates with a cross-section in the shape of "]", and magnetic strips are respectively provided on the two limiting plates; one end of each of the first telescopic rods is rotatably connected to the limiting plate; the observation component is located above the guide groove to determine the relative position of the reinforcing plate and the wall hole, so as to facilitate subsequent position adjustment.

[0012] Further, in step S2, the power device includes a power rod, a second telescopic rod, and a locking groove. The locking groove has a slot for engaging the locking end. One end of the power rod is fixed to the side wall of the locking groove away from the slot, and the other end faces the inner wall of the pile body. The second telescopic rod is rotatably connected to the locking groove.

[0013] Furthermore, in step S3, after the reinforcing plate has penetrated to a certain depth into the soil, the first telescopic rod is controlled to open to both sides, separating the two limiting plates and causing the guide groove to detach from the reinforcing plate.

[0014] Furthermore, in step S3, after the reinforcing plate is attached to the inner wall of the pile body at the locking end, the power device is disengaged, and the guide device and the power device are lifted away from the pile body for recovery.

[0015] Furthermore, the power unit also includes a support plate, which is fixedly connected to the end of the power rod away from the locking groove.

[0016] Furthermore, the power rod is a hydraulic rod, and the hydraulic rod is electrically connected to an external power supply device.

[0017] Furthermore, in step S2, the end of the reinforcing plate near the wall hole is set as a pointed tip to facilitate the reinforcing plate entering the soil.

[0018] Furthermore, the support plate is an arc-shaped panel that fits against the inner wall of the pile.

[0019] The advantages of this invention are: when the bearing capacity of the pile foundation is insufficient, by driving a reinforcing plate into the pile body, with one end of the reinforcing plate engaged in the pile body and the other end extending into the soil layer, the contact area between the pile body and the soil body is expanded, thereby increasing the bearing capacity of the pile foundation. This has good economic and social benefits, reduces the amount of piles used in the project, saves the construction period, and reduces construction costs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the combined pile structure obtained by this construction method.

[0021] Figure 2 This is the installation cross-sectional view of the combined pile structure obtained by this construction method.

[0022] Figure 3 This is a top view of the installation of the combined pile structure obtained by this construction method.

[0023] Figure 4 This is a schematic diagram of the reinforcing plate in the composite pile structure obtained by this construction method.

[0024] Figure 5 This is a schematic diagram of the guiding device in the composite pile structure obtained by this construction method.

[0025] Figure 6 This is a schematic diagram of the power unit in the combined pile structure obtained by this construction method.

[0026] In the attached drawings, 1-pile body; 2-reinforcing plate; 3-guide device; 4-power device; 11-wall hole; 21-locking end; 22-tip; 31-guide groove; 32-first telescopic rod; 33-observation component; 41-locking groove; 42-power rod; 43-second telescopic rod; 44-support plate. Detailed Implementation

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. However, the described embodiments are only some embodiments of the present invention, not all embodiments, and the scope of protection of the present invention is not limited thereto.

[0028] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "left," "right," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the inventive product is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0029] Please see Figure 1-3This embodiment provides a method for constructing sheet pile composite piles, which involves devices and structures including a pile body 1, a reinforcing component, a guiding device 3, and a power device 4. The pile body 1 has multiple wall holes 11 on its sidewall. The reinforcing component, guiding device, and power device constitute a reinforcing mechanism. The reinforcing component includes a reinforcing plate 2 and a locking end. The reinforcing plate 2 is placed inside the pile body 1, and the locking end is located at one end of the reinforcing plate 2. The guiding device 3 is located on the reinforcing plate 2, and its function is to control the other end of the reinforcing plate 2 to align with the wall hole 11. The power device 4 is located on the side of the locking end away from the reinforcing plate 2, and its function is to push the reinforcing plate 2 through the wall hole 11 into the soil layer, thereby increasing the contact area between the pile body 1 and the soil, and improving the vertical and horizontal bearing capacity of the pile body 1.

[0030] Specifically, such as Figure 5 As shown, the guiding device 3 includes a guide groove 31, multiple first telescopic rods 32, and an observation component 33. The guide groove 31 consists of two limiting plates with a cross-section shaped like a "]". Magnetic strips are provided on each of the two limiting plates, attracting and fixing them together to form a guide groove 31 that allows the reinforcing plate 2 to pass through. One end of each first telescopic rod 32 is rotatably connected to the top of the guide groove via a universal joint. At least two first telescopic rods 32 are provided, each rotatably connected to the top of one of the two limiting plates. The observation component 33 is located at the top of the guide groove 31 and its function is to determine the relative position of the reinforcing plate 2 and the wall hole 11. In this embodiment, the limiting plates are made of steel plates with grooves. At the four corners of the guide groove formed by the two steel plates, they are rotatably connected to four first telescopic rods 32 via universal joints. The observation component 33 is a camera.

[0031] Specifically, such as Figure 6 As shown, the power unit 4 includes a power rod 42, a second telescopic rod 43, a locking groove 41, and a support plate 44. The locking groove 41 has an opening; one end of the power rod 42 is fixed to the side wall of the locking groove 41 away from the opening, and the other end is fixedly connected to the support plate 44. One end of the second telescopic rod 43 is rotatably connected to the top of the locking groove 41 via a universal joint. In this embodiment, the power rod 42 is a hydraulic rod, which is connected to a power source to provide pressure during use. The support plate 44 is an arc-shaped support panel with the same curvature as the inner wall of the pile body 1. During use, the support plate 44 closely adheres to the inner wall of the pile body to provide support, facilitating even force distribution.

[0032] Specifically, such as Figure 3 As shown, the reinforcing plate 2 is a steel plate with a certain curvature. Its right side is welded to the steel plate to form a locking end 21, and its left side is ground to form a pointed tip 22, which facilitates the reinforcing plate 2 to enter the soil layer.

[0033] Based on the above-described device, the construction method of this embodiment includes the following steps:

[0034] S1: Based on the soil properties, determine the driving depth of the pile body 1 and the insertion depth and angle of the reinforcing plate 2, mark the opening position of the wall hole 11 on the pile body 1, and open multiple wall holes 11.

[0035] S2: Open the guide groove 31, insert the reinforcing plate 2, and clamp the reinforcing plate 2 in the middle of the guide groove 31. Place the locking end 21 of the reinforcing plate 2 into the locking groove. The reinforcing plate 2, the guide device 3, and the power device 4 are connected to form an integral reinforcing structure. Then, connect steel wire ropes to the top of the first telescopic rod 32 and the second telescopic rod 43 respectively. Hang the other end of the steel wire rope on a crane or hoist. Lower the reinforcing structure into the pile body 1 and sink it to the set position. Before lowering the reinforcing structure, connect the power rod to the external power supply device.

[0036] S3: By observing component 33, determine the relative position of the tip 22 of the reinforcing plate and the wall hole 11, adjust the length of the first telescopic rod 32 and the second telescopic rod 43 so that the tip 22 of the reinforcing plate is aligned with the wall hole 11, energize the power rod 42, and the power rod 42 provides thrust to the locking groove 41 so that the tip 22 of the reinforcing plate enters the soil layer from the wall hole 11; when the reinforcing plate 2 enters the soil layer to a certain depth, control the first telescopic rod 32 to open to both sides so that the two limiting plates of the guide groove 31 separate and detach from the reinforcing plate 2, and the power rod 42 continues to provide pressure to the locking groove 41 to increase the depth of the reinforcing plate 2 into the soil until the locking end 21 of the reinforcing plate is attached to the inner wall of the pile body 1, and the power rod 42 is de-energized to stop the advancement.

[0037] S4: Control the second telescopic rod 43 to disengage the locking slot 41 from the locking end 21 of the reinforcing plate, and then lift and retrieve the guide device 3 and the power device 4 to complete the construction of the combined pile.

[0038] Through the above construction process, this embodiment increases the contact area between the pile 1 and the soil layer by driving reinforcing plates 2 around the pile 1, thereby effectively increasing the vertical and horizontal bearing capacity of the pile foundation; moreover, the construction method is simple and can effectively reduce the difficulty and cost of pile foundation construction.

[0039] In other embodiments, the number of pile wall holes 11 and reinforcing plates 2 can be arranged according to the bearing capacity value required by the actual project, and then the above construction process is repeated to achieve the installation of multiple reinforcing plates 2.

[0040] The above description is only a part of the embodiments of the present invention, and is not intended to limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the content of the present invention specification should be included within the protection scope of the present invention.

Claims

1. A method of construction of a combined pile of sheet piles, characterized in that, The method comprises the following steps: S1: according to the soil properties, the pile sinking depth of the pile body and the insertion depth and angle of the reinforcing mechanism are determined, and a wall hole is opened at the corresponding position of the pile body; S2: assembling the reinforcing mechanism: the reinforcing mechanism comprises a reinforcing plate, a guide device and a power device, one end of the reinforcing plate is a clamping end; the power device is electrically connected with an external power supply device; the guide device is installed on the reinforcing plate, and the power device is arranged on the side of the clamping end away from the reinforcing plate, forming an integrated structure; S3: hoisting the reinforcing mechanism into the designated position in the pile body, adjusting the other end of the reinforcing plate to align with the wall hole, and then controlling the power device to push the reinforcing plate through the wall hole and out of the pile body; In step S2, the guide device comprises a guide groove, at least two first telescopic rods and an observation component; the guide groove is composed of two oppositely arranged limiting plates with a section in the shape of "]", and a magnetic stripe is arranged on each of the two limiting plates; one end of any first telescopic rod is rotatably connected with the limiting plate; the observation component is arranged above the guide groove to determine the relative position of the reinforcing plate and the wall hole.

2. A construction method of a sheet pile composite pile according to claim 1, characterized in that, In step S2, the power device comprises a power rod, a second telescopic rod and a clamping groove, the clamping groove is provided with a slot opening for clamping the clamping end, one end of the power rod is fixed on the side wall of the clamping groove away from the slot opening, and the other end faces the inner wall of the pile body; the second telescopic rod is rotatably connected with the clamping groove.

3. A construction method of sheet pile composite piles according to claim 2, characterized in that, In step S3, after the reinforcing plate enters a certain depth of the soil layer, the first telescopic rod is controlled to open to the both sides, the two limiting plates are separated, and the guide groove is separated from the reinforcing plate.

4. A construction method of a sheet pile composite pile according to claim 1, characterized in that, In step S3, after the clamping end of the reinforcing plate is attached to the inner wall of the pile body, the power device is separated, and the guide device and the power device are hoisted away from the pile body for recycling.

5. A construction method of sheet pile composite piles according to claim 3, characterized in that, The power device further comprises a support plate, and the support plate is fixedly connected with the end of the power rod away from the clamping groove.

6. A construction method of sheet pile composite piles according to claim 3, characterized in that, The power rod is a hydraulic rod, and the hydraulic rod is electrically connected with the external power supply device.

7. A construction method of sheet pile composite piles according to claim 1, characterized in that, In step S2, the end of the reinforcing plate close to the wall hole is provided with a sharp end.

8. A construction method of sheet pile composite piles according to claim 5, characterized in that, The support plate is an arc-shaped panel attached to the inner wall of the pile body.

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