Tubular pile construction joint
By designing the holes through the hard interlayer in the pipe pile construction node, the problem of unreasonable hole depth setting in the hard soil layer area is solved, and the smooth sinking of the pipe piles and the smooth progress of the construction process is achieved, reducing costs and improving construction quality.
Patent Information
- Application Number
- CN202421815923.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-29
AI Technical Summary
In the hard soil layer area, the setting of the hole depth during hole introduction is easily unreasonable, which affects the progress of the construction process.
Design a pipe pile construction node, including base soil layer, mezzanine, holes and pipe piles. The hole extends downward from the top side surface of the base soil layer in the height direction, and then stops after penetrating through the interlayer, with a diameter greater than the outer diameter of the pipe pile, ensuring that the pipe pile can pass through the hard layer smoothly.
Through this design, the holes span the hard rock layer, avoid obstacles from the hard layer, reduce the depth of the hole, reduce construction costs, and improve the quality of piles and the practicality of construction.
Smart Images
Figure CN223003397U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipe pile construction, in particular to a pipe pile construction joint. Background Technique
[0002] A pipe pile is a precast engineering pile, which is used as the foundation material of a building. In a specific geological environment, it is driven into the ground by a pile driver and plays a stress-bearing role in the building.
[0003] With the development of construction technology, areas with hard soil layers such as mountains and hills are gradually utilized in urban construction. This area has topographical features such as large fluctuations in rock formations and uneven distribution of boulders. There are local massive rock bodies or boulders in the soil layer.
[0004] In the related technology, direct pile sinking construction cannot be carried out in the hard soil layer area. It is often necessary to pre-drill a hole in advance. Pre-drilling a hole means pre-drilling a hole channel with a diameter smaller than the pipe pile at the pile position, and the pipe pile uses the pre-drilled hole channel for pile sinking construction. Among them, in the setting of the hole channel, if the depth of the hole channel is small, when the pipe pile is sinking, it is easy to encounter a rock boulder and be blocked by it before reaching the designed pile length, resulting in the inability to continue pile sinking; if the depth of the hole channel is large, the groundwater level is often high in the soil layer, which is easy to cause the collapse of the hole channel and affect the progress of the construction process. Content of the Utility Model
[0005] In view of this, the utility model provides a pipe pile construction joint to solve the problem that the setting of the depth of the hole channel during pre-drilling in the hard soil layer is prone to be unreasonable and affects the progress of the construction process.
[0006] The utility model provides a pipe pile construction joint, including: a base soil layer with an interlayer inside, and the interlayer is a hard layer; a hole channel is opened in the base soil layer; the hole channel extends downward along the height direction from the top surface of the base soil layer and stops extending after passing through the interlayer; the diameter of the hole channel is D1; a pipe pile is arranged at the hole channel, and part of the pile body is inserted and immersed in the base soil layer; the outer diameter of the pipe pile is D2, where D1 > D2; among them, the pipe pile has a pile sinking state in which the first end pile body is located in the hole channel and the second end is pressed, so that the first end pile body is inserted into the soil below the hole channel; when the pipe pile is in the pile sinking state, the pipe pile passes through the hole channel and passes through the interlayer.
[0007] Beneficial effects: By providing a pore channel extending in the height direction and stopping at the interlayer, the pore channel penetrates the hard rock layer, ensuring smooth driving of the pipe pile without being hindered by the hard layer. The pore channel stops extending after crossing the hard rock layer, minimizing the depth of the pilot hole and preventing the influence of the soft layer at the bottom on the construction process, achieving a reasonable depth of the pilot hole and ensuring the smooth progress of the pipe pile construction; the amount of pilot hole work is small, the depth of the pilot hole is shallow, and the overall cost is low; the diameter of the pore channel at the hard interlayer is large, ensuring smooth pile driving and improving the quality of pile driving, with strong practicability.
[0008] In an alternative embodiment, it further includes a backfill portion disposed in the base soil layer and surrounding the periphery of the pipe pile.
[0009] In an alternative embodiment, the backfill portion is adapted to fill the gap between the pipe pile and the pore channel to fix the pipe pile.
[0010] In an alternative embodiment, the first end orifice of the pore channel is located at the top surface of the base soil layer, and the bottom surface of the second end of the pore channel is defined as the abutting surface, which is located on the side of the interlayer away from the orifice, so that the pore channel crosses the interlayer.
[0011] In an alternative embodiment, when the pipe pile is in the state of pile driving, the pipe pile penetrates the abutting surface and sinks into the base soil layer.
[0012] In an alternative embodiment, the diameter D1 of the pore channel is 800 mm ± 5 mm.
[0013] In an alternative embodiment, the outer diameter D2 of the pipe pile is 500 ± 5 mm.
[0014] In an alternative embodiment, the backfill portion is a cement layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0016] Figure 1 Schematic diagram of the pilot hole and the pipe pile at the construction node of the pipe pile of the present invention;
[0017] Figure 2 Cross-sectional schematic diagram of the construction node of the pipe pile of the present invention.
[0018] Description of the reference numerals in the drawings:
[0019] 1. Base soil layer; 2. Interlayer; 3. Duct; 31. Reaction surface; 4. Pipe pile; 5. Backfill part. Specific embodiments
[0020] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.
[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0023] In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.
[0024] The following combines Figures 1 to 2 , to describe the embodiments of the present utility model.
[0025] According to an embodiment of the present utility model, a pipe pile construction node is provided, including: a base soil layer 1, with an interlayer 2 provided inside, and the interlayer 2 is a hard layer; a hole 3 is opened in the base soil layer 1; the hole 3 extends downward along the height direction from the top surface of the base soil layer 1 and stops extending after passing through the interlayer 2; the diameter of the hole 3 is D1; a pipe pile 4 is arranged at the position of the hole 3, and part of the pile body is inserted and immersed into the base soil layer 1; the outer diameter of the pipe pile 4 is D2, wherein D1 > D2; wherein, the pipe pile 4 has a pile sinking state in which the first end pile body is located in the hole 3 and the second end is pressed, so that the first end pile body is inserted into the soil below the hole 3; when the pipe pile 4 is in the pile sinking state, the pipe pile 4 passes through the hole 3 and passes through the interlayer 2.
[0026] In this embodiment, by providing a hole 3 extending along the height direction, and the hole 3 stops extending after passing through the interlayer 2, and the depth of the hole 3 is set to penetrate the hard rock layer, so that the hole 3 spans the hard rock layer, ensuring the smooth progress of the pipe pile 4 during hammer-driven pile sinking without being hindered by the hard layer. At the same time, the hole 3 stops extending after spanning the hard rock layer, minimizing the depth of the pilot hole to the greatest extent, preventing the influence of the soft layer at the bottom on the construction process, and achieving the purpose of setting the pilot hole depth reasonably and ensuring the smooth progress of the construction process of the pipe pile 4; the amount of pilot hole work is small, the depth of the pilot hole is shallow, and the overall cost is low; the diameter of the hole 3 at the position where it passes through the hard interlayer 2 is large, ensuring smooth pile sinking and improving the quality of pile sinking, with strong practicability.
[0027] The pipe pile construction node further includes a backfill part 5, which is arranged in the base soil layer 1 and surrounds the periphery of the pipe pile 4; since the diameter of the hole 3 is larger than the diameter of the pipe pile 4, the backfill part 5 fills the gap between the pipe pile 4 and the hole 3 to fix the pipe pile 4; the backfill part 5 can be a cement layer.
[0028] Combined with Figure 1 and Figure 2As shown, the specific construction process is to use a construction survey device to survey the soil structure at the pile position to determine the depth and position of the hard layer; the construction survey device can be an advance drill, specifically a core drill; with the help of the drill, a guide hole is dug downward, and the digging is stopped after penetrating the hard interlayer 2, so as to obtain a channel 3 that extends through the interlayer 2 and stops extending; the diameter of the channel 3 is larger than the diameter of the pipe pile 4, and cement soil is backfilled in the channel 3 to obtain a backfill part 5, and the backfill part 5 can prevent the pipe pile 4 from being offset and skewed; thereafter, the pipe pile 4 is placed in the channel 3, and the second end pile body of the pipe pile 4 is continuously hammered by a pile driver, so that the first end pile body of the pipe pile 4 is gradually immersed in the soil below the channel 3, and the pile sinking construction is completed; a static load test is carried out to confirm that the pile body meets the bearing capacity requirements and the construction is completed; during the construction process, the advance drill cooperates with the rotary drilling rig to obtain a channel 3 with a reasonable extension depth, and the extension depth of the channel 3 is based on penetrating the hard rock layer to ensure the subsequent construction quality.
[0029] In some embodiments, in combination Figure 1 As shown, the opening of the first end of the channel 3 is located at the top side surface of the base soil layer 1, and the bottom surface of the second end of the channel 3 is defined as the abutment surface 31. The abutment surface 31 is located on the side of the interlayer 2 away from the opening, so that the channel 3 is arranged across the interlayer 2; the soil at the abutment surface 31 is consistent with the soil of the base soil layer 1, and when the pipe pile 4 is in the pile sinking state, the pipe pile 4 passes through the abutment surface 31 to be immersed in the base soil layer 1.
[0030] In some embodiments, in combination Figure 1 As shown, the diameter D1 of the hole 3 can be 800 mm with a tolerance of 5 mm, and the outer diameter D2 of the pipe pile 4 can be 500 mm with a tolerance of 5 mm; the diameter of the hole 3 is larger than the outer diameter of the pipe pile 4 to ensure smooth pile sinking.
[0031] Obviously, the above embodiments are only examples for clear explanation, and are not intended to limit the implementation methods. Although the embodiments of the present utility model are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present utility model, and such modifications and variations are all within the scope defined by the present utility model.
Claims
1. A pipe pile construction node, characterized in that: include: A base soil layer (1) is provided with an interlayer (2) inside, wherein the interlayer (2) is a hard layer; The hole (3) is opened in the base soil layer (1); the hole (3) extends downward from the top side surface of the base soil layer (1) along the height direction, and stops extending after penetrating the interlayer (2); the diameter of the hole (3) is D1; A pipe pile (4) is arranged at the hole (3), and a part of the pile body is inserted into and immersed in the base soil layer (1); the outer diameter of the pipe pile (4) is D2, wherein D1>D2; The pipe pile (4) has a first end pile body located in the hole (3), and the second end is pressed so that the first end pile body is inserted into the soil below the hole (3) in a pile sinking state; When the pipe pile (4) is in a pile sinking state, the pipe pile (4) passes through the hole (3) and penetrates the interlayer (2) to be arranged.
2. The pipe pile construction node according to claim 1, characterized in that: It also includes a backfill portion (5) which is arranged in the base soil layer (1) and surrounds the periphery of the pipe pile (4).
3. The pipe pile construction node according to claim 2, characterized in that: The backfill portion (5) is suitable for filling the gap between the pipe pile (4) and the hole (3) to fix the pipe pile (4).
4. The pipe pile construction node according to claim 1, characterized in that: The first end opening of the hole (3) is located on the top side surface of the base soil layer (1), and the second end bottom surface of the hole (3) is defined as a contact surface (31). The contact surface (31) is located on the side of the interlayer (2) away from the opening, so that the hole (3) is arranged across the interlayer (2).
5. The pipe pile construction node according to claim 4, characterized in that: When the pipe pile (4) is in a pile sinking state, the pipe pile (4) penetrates the abutment surface (31) to be immersed in the base soil layer (1).
6. The pipe pile construction node according to claim 1, characterized in that: The diameter D1 of the hole (3) is 800 mm ± 5 mm.
7. The pipe pile construction node according to claim 6, characterized in that: The outer diameter D2 of the pipe pile (4) is 500±5 mm.
8. The pipe pile construction node according to claim 2, characterized in that: The backfill portion (5) is a cement layer.