Prestressed pipe pile tip
By setting guide channels and guide plates on the tip of prestressed pipe piles, the problems of low efficiency and high cost of traditional pre-drilling operations are solved, achieving efficient and stable pile foundation construction and improving the verticality of the pile and structural safety.
Patent Information
- Application Number
- CN202520577377.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-28
AI Technical Summary
In the construction of prestressed pipe piles in new energy projects, traditional pre-drilling operations are inefficient and costly, and may weaken the bearing capacity of the pile foundation, leading to uneven settlement or tilting of the pile foundation, which affects the structural safety and stability.
A prestressed pipe pile tip is designed, which adopts a flow channel and guide plate structure. The flow channel reduces the resistance of the drilling section, and the guide plate provides guidance to ensure that the pile enters the stratum vertically and avoids the need for pre-drilling operations.
It improves construction efficiency, reduces pile breakage rate and vibration impact, maintains pile verticality and stability, and reduces construction costs and time.
Smart Images
Figure CN223937141U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and in particular to a prestressed pipe pile tip. Background Technology
[0002] In the construction of prestressed concrete pipe piles for new energy projects, due to hard soil or complex geological conditions such as the presence of gravel, direct static pressure piling or hammer driving is often not feasible. Pre-drilling is required before pile driving. However, traditional pre-drilling is not only inefficient but also costly. The additional equipment and procedures required for pre-drilling increase both project time and overall budget. More importantly, pre-drilling before pile driving can weaken the overall bearing capacity of the pile foundation because the pre-drilling process may alter the soil structure, reducing its support for the piles. In the long term, under superstructure loads, this weakening can lead to uneven settlement or tilting of the pile foundation, severely impacting the structural safety and stability. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a prestressed pipe pile tip to address the above-mentioned problems.
[0004] The technical solution adopted in this utility model is: a prestressed pipe pile tip, comprising:
[0005] The pile tip body is hollow inside, with a connecting part at one end for connecting to the head end of the prestressed pipe pile, and a drilling part at the other end for drilling into the soil layer.
[0006] The guide channel is installed through the outer wall of the drilling section and is distributed circumferentially along the outer wall of the drilling section to reduce the resistance encountered by the drilling section during the pile driving process.
[0007] Guide plates are located on the outer wall of the drilling section and distributed between adjacent guide channels to provide forward guidance for the drilling section during the piling process.
[0008] Using the above-mentioned technical means, the main body of the pile tip is connected to the pile head end of the prestressed pipe pile by the connecting part. The guide groove on the drilling part can reduce the resistance encountered by the drilling part during the pile driving process, and the guide plate on the drilling part can provide guidance during the drilling process, so that the pile body of the prestressed pipe pile enters the stratum in a predetermined direction. Thus, the drilling part makes it easier for the prestressed pipe pile to penetrate hard soil layers or strata containing gravel, without the need for pre-drilling operations, thereby significantly improving construction efficiency.
[0009] In some embodiments, the drilling section includes a concave section and a semi-elliptical section. One end of the concave section is connected to the connecting section, and the other end of the concave section is connected to the plane of the semi-elliptical section. The periphery of the concave section is recessed inward to form an annular groove. The outer wall of the concave section is provided with a guide groove that extends at least partially to the semi-elliptical section. The guide plate is connected between the outer walls of the concave section and the semi-elliptical section between adjacent guide grooves.
[0010] In some embodiments, the guide grooves and guide plates are evenly and alternately arranged circumferentially on the outer wall of the drilling part, with adjacent guide grooves and guide plates forming a group, and the number of groups is three or four.
[0011] In some embodiments, the guide channel is an arc-shaped groove, and the groove depth does not exceed 1 / 2 of the wall thickness of the pile tip body.
[0012] In some embodiments, the pile tip body and the guide plate are both made of metal. The connecting part of the pile tip body is welded to the pile head end of the prestressed pipe pile, and the guide plate is welded to the outer wall of the drilling part of the pile tip body.
[0013] In some embodiments, the diameter of the connection portion is the same as the diameter of the end of the prestressed pipe pile.
[0014] In some embodiments, the thickness of the guide plate is 5mm to 10mm.
[0015] The beneficial effects of this utility model are:
[0016] 1. By installing a guide channel on the outer wall of the drilling section, the resistance encountered by the drilling section during pile driving can be reduced, making it easier for the pile tip to penetrate hard soil layers or strata containing gravel. Through the guide plates evenly distributed on the outer wall of the drilling section, the guide plates can contact the soil and generate a certain lateral support force during pile driving, guiding the pile body into the strata in a predetermined direction, reducing the risk of pile tilting due to changes in geological conditions or other factors, and enhancing the verticality and stability of the pile body. By installing this pile tip structure at the pile head end of the prestressed concrete pipe pile, not only can the pre-drilling work be reduced, improving construction efficiency, but also, compared with direct pile driving without pre-drilling, the pile breakage rate is reduced, the impact of pile driving vibration on the site and environment is reduced, and it is easier to maintain the original pile position and less prone to deviation. Attached Figure Description
[0017] Figure 1 This is an isometric structural view of this application.
[0018] Figure 2 This is a front view of this application.
[0019] Figure 3 yes Figure 2 A segmented diagram.
[0020] Figure 4 This is a top view of this application.
[0021] Figure 5 This is a bottom view of this application.
[0022] Figure 6 This is a schematic diagram of the guide plate in this application.
[0023] Figure 7 This is a schematic diagram of the structure installed on the prestressed concrete pipe piles as per this application.
[0024] Explanation of reference numerals in the attached figures:
[0025] 1. Pile tip body; 2. Connecting part; 3. Drilling part; 4. Guide channel; 5. Guide plate; 6. Concave section; 7. Semi-elliptical section; 8. Prestressed pipe pile.
[0026] This specification includes references to "one embodiment" or "implementation". The use of the phrase "in one embodiment" or "in an embodiment" does not necessarily refer to the same embodiment. Specific features, structures, or characteristics may be combined in any suitable manner consistent with this disclosure.
[0027] The term "comprising" is open-ended. As used in the appended claims, it does not exclude additional structures or steps.
[0028] "First," "second," etc. As used in this article, these terms serve as labels for the nouns preceding them and do not imply any type of ordering (e.g., spatial, temporal, logical, etc.). Detailed Implementation
[0029] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below with reference to specific embodiments.
[0030] Combination Figures 1 to 7 As shown, this embodiment is a prestressed concrete pipe pile tip, including a pile tip body 1, a guide channel 4, and a guide plate 5. The pile tip body 1 is hollow inside. One end of the pile tip body 1 is provided with a connecting part 2, and the other end is provided with a drilling part 3. The connecting part 2 is used to connect to the pile head end of the prestressed concrete pipe pile 8, and the drilling part 3 is used to guide the pile body of the prestressed concrete pipe pile 8 into the soil layer. The outer wall of the drilling part 3 is provided with a guide channel 4, and multiple guide channels 4 are distributed circumferentially along the outer wall of the drilling part 3. The guide channels 4 are used to reduce the resistance encountered by the drilling part 3 during the pile driving process. The outer wall of the drilling part 3 is also provided with a guide plate 5, which is distributed between adjacent guide channels 4. The guide plate 5 is used to provide forward guidance for the drilling part 3 during the pile driving process.
[0031] In some implementation schemes, such as Figure 3As shown, the drilling section 3 includes a concave section 6 and a semi-elliptical section 7. One end of the concave section 6 is connected to the connecting section 2, and the other end of the concave section 6 is connected to the plane of the semi-elliptical section 7. The periphery of the concave section 6 is recessed inward to form an annular groove. The outer wall of the concave section 6 is provided with a guide groove 4 that extends at least partially to the semi-elliptical section 7. A guide plate 5 is connected between the outer walls of the concave section 6 and the semi-elliptical section 7 between adjacent guide grooves 4. Specifically, in this embodiment, the connecting section 2, the concave section 6, and the semi-elliptical section 7 are integrally formed and are generally bullet-shaped. The diameter of the connecting section 2 is the same as the diameter of the end of the prestressed pipe pile 8.
[0032] The concave section 6 and the semi-elliptical section 7 are connected to form the drilling section 3. The special shape of the drilling section 3 allows the pile tip to more effectively disperse pressure when it contacts the soil. It can quickly penetrate hard soil layers or strata containing gravel by taking advantage of its shape. In addition, the concave section 6 can help guide soil flow and reduce resistance.
[0033] Furthermore, the guide channels 4 and guide plates 5 are evenly and alternately arranged circumferentially on the outer wall of the drilling section 3, with adjacent guide channels 4 and guide plates 5 forming a group, and the number of groups is three or four. Specifically, as shown... Figure 5 As shown, in this embodiment, four sets are used, with the guide groove 4 and the guide plate 5 arranged at intervals, and the guide plate 5 is distributed in a cross shape.
[0034] The alternating arrangement of the guide channels 4 and guide plates 5 not only makes it easier for the pile tip to penetrate the soil layer, but also allows the soil to smoothly slide through the guide channels 4 during pile driving, reducing the resistance directly acting on the pile tip and minimizing the formation of local high-pressure zones. The guide plates 5, evenly distributed around the drilling section 3, provide additional lateral support to the pile tip, ensuring the verticality and directional stability of the pile during driving and reducing the risk of pile tilting due to geological changes.
[0035] Furthermore, the guide channel 4 is an arc-shaped groove. The arc shape allows the pile tip to pass through various complex geological conditions more smoothly, improving the speed and efficiency of pile driving. Specifically, in this embodiment, the groove depth does not exceed 1 / 2 of the wall thickness of the pile tip body 1. The appropriate groove depth ensures sufficient strength while effectively reducing the forward resistance.
[0036] Furthermore, both the pile tip body 1 and the guide plate 5 are made of metal. The connecting part 2 of the pile tip body 1 is welded to the metal base at the pile head end of the prestressed pipe pile 8, and the guide plate 5 is welded to the outer wall of the drilling part 3 of the pile tip body 1.
[0037] Furthermore, such as Figure 6As shown, the outer wall of the guide plate 5 away from the drilling part 3 is arc-shaped. The thickness of the guide plate 5 is adjusted according to the bearing capacity of the prestressed pipe pile 8. In this embodiment, the thickness of the guide plate 5 is generally 5mm to 10mm to ensure sufficient support without excessively increasing the weight.
[0038] Furthermore, in this embodiment, the wall thickness of the drilling section 3, the width and depth of the guide channel 4 are all determined according to the pile diameter of the prestressed pipe pile 8 in the actual project.
[0039] The implementation principle of a prestressed pipe pile tip is as follows:
[0040] By employing the tip of the prestressed concrete pipe pile 8, it is applied to the foundation construction of the prestressed concrete pipe pile 8 and installed on the pile head. During the pile driving construction, it can play a guiding and sealing role. The curved design of the drilling section 3 and the configured guide plate 5 can quickly break through the hard soil layer, reaching the design depth in one pile driving, improving pile driving efficiency, reducing damage to the pile head, and reducing mechanical costs and environmental impact caused by vibration. The guide groove 4 designed on the drilling section 3 reduces the resistance at the pile tip, and the configuration of the guide plate 5 reduces the risk of pile tilting caused by forced pile driving. At the same time, the ability of the pile tip to quickly penetrate the hard soil layer greatly shortens the construction cycle and reduces the total project duration.
[0041] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A prestressed pipe pile tip, characterized in that, include: The pile tip body (1) is hollow inside. One end is provided with a connecting part (2) for connecting the pile head end of the prestressed pipe pile (8), and the other end is provided with a drilling part (3) for drilling into the soil layer. The guide channel (4) is installed through the outer wall of the drilling part (3) and is distributed circumferentially along the outer wall of the drilling part (3) to reduce the resistance of the drilling part (3) during the pile driving process. Guide plates (5) are provided on the outer wall of the drilling section (3) and distributed between adjacent guide channels (4) to provide forward guidance for the drilling section (3) during the piling process.
2. The prestressed pipe pile tip according to claim 1, characterized in that: The drilling section (3) includes a concave section (6) and a semi-elliptical section (7). One end of the concave section (6) is connected to the connecting section (2), and the other end of the concave section (6) is connected to the plane of the semi-elliptical section (7). The periphery of the concave section (6) is recessed inward to form an annular groove. The outer wall of the concave section (6) is provided with a guide groove (4) that extends at least partially to the semi-elliptical section (7). The guide plate (5) is connected between the outer walls of the concave section (6) and the semi-elliptical section (7) and the adjacent guide groove (4).
3. The prestressed pipe pile tip according to claim 1, characterized in that: The guide groove (4) and the guide plate (5) are evenly and alternately arranged in the circumferential direction on the outer wall of the drilling part (3), with adjacent guide grooves (4) and guide plates (5) forming a group, and the number of groups is three or four.
4. The prestressed pipe pile tip according to claim 1, characterized in that: The guide groove (4) is an arc-shaped groove, and the depth of the groove does not exceed 1 / 2 of the wall thickness of the pile tip body (1).
5. The prestressed pipe pile tip according to claim 1, characterized in that: Both the pile tip body (1) and the guide plate (5) are made of metal. The connecting part (2) of the pile tip body (1) is welded to the pile head end of the prestressed pipe pile (8), and the guide plate (5) is welded to the outer wall of the drilling part (3) of the pile tip body (1).
6. The prestressed pipe pile tip according to claim 1, characterized in that: The diameter of the connecting part (2) is the same as the diameter of the end of the prestressed pipe pile (8).
7. The prestressed pipe pile tip according to claim 1, characterized in that: The thickness of the guide plate (5) is 5mm to 10mm.