Weldless connection concrete precast pipe pile

Abstract

The utility model relates to concrete prefabricated short pile pit formula static pressure pile construction technology field, concretely relates to a kind of welding-free connection concrete prefabricated pipe pile, including pipe pile body and lock anchor connecting piece, the quantity of lock anchor connecting piece is multiple, multiple lock anchor connecting piece array is set between adjacent pipe pile body, and adjacent pipe pile body is connected by lock anchor connecting piece;The connection between adjacent pipe pile body is realized by setting multiple lock anchor connecting pieces in the end portion of pipe pile body, operation avoids person to carry out welding operation in narrow space in guide pit, ensures that operating personnel operation safety, avoids harmful gas generation, protects environment;Meanwhile, the difficulty of connection is further reduced by the splicing mode of lock anchor connecting piece, improves operation efficiency, satisfies actual construction demand.

Description

Technical Field

[0001] This utility model relates to the field of construction technology of precast concrete short pile pit static pressure piles, specifically to a weld-free connection of precast concrete pipe piles. Background Technology

[0002] In the construction of pit-type static pressure piles using precast concrete short piles, the traditional pile connection adopts the surrounding welding process.

[0003] In the actual operation, the workers went down into the pilot pit to carry out welding operations. The welding position of the pile splicing was located at the bottom of the pilot pit, which increased the difficulty of the operation. In addition, the working environment was unstable, and the welding quality was difficult to guarantee effectively. At the same time, the pit was narrow and the harmful gases generated by welding were not easy to dissipate, which could easily cause physical harm to the workers, increase the operation risk and construction cost. Furthermore, manual on-site operation was inefficient and risky, and could not meet the actual construction needs. Utility Model Content

[0004] The purpose of this utility model is to provide a weld-free connection for precast concrete pipe piles, solving the technical problem of inconvenient connection at the guide pit position of current precast concrete pipe piles.

[0005] The solution of this utility model to the above-mentioned technical problems is as follows: A weld-free connection for precast concrete pipe piles includes a pipe pile body and locking anchor connectors. The number of locking anchor connectors is multiple, and the multiple locking anchor connectors are arranged in an array between adjacent pipe pile bodies, and adjacent pipe pile bodies are connected by locking anchor connectors.

[0006] Further defined, the anchoring connector includes a male anchor and a female anchor. One end of the pipe pile body is the male anchor, and the other end of the pipe pile body is the female anchor. The male anchors are arranged in an array around the axis of the pipe pile body, and the female anchors are arranged in an array around the axis of the pipe pile body. The male anchors and female anchors correspond one-to-one.

[0007] Further specified, the end face of the male pile head is provided with a male flange, and the male locking anchor is connected to the male pile head through the male flange; the end face of the female pile head is provided with a female flange, and the female locking anchor is connected to the female pile head through the female flange.

[0008] Furthermore, both the male and female flanges are connected to the pipe pile body via pre-embedded reinforcing bars.

[0009] Furthermore, the number of the pre-embedded reinforcing bars is multiple, and the multiple pre-embedded reinforcing bars are arranged circumferentially around the axis of the pipe pile body.

[0010] Further specified, the male end of the anchor lock is threadedly connected to the male flange, and the female end of the anchor lock is threadedly connected to the female flange.

[0011] Further specified, the top of the male locking member is threaded, the top of the female locking member is threaded, the top of the female locking member is flush with the upper end face of the female flange, and the bottom of the female locking member extends into the female flange.

[0012] Further defined, the male head of the anchor lock includes a snap-fit ​​section, a mating section, and a male threaded section connected in sequence. The snap-fit ​​section and the mating section are both frustums of cylinders. The upper bottom surface of the mating section is connected to the lower bottom surface of the snap-fit ​​section. The outer diameter of the upper bottom surface of the mating section is smaller than the outer diameter of the lower bottom surface of the snap-fit ​​section. The female head of the anchor lock is sleeved on the outside of the mating section, and the snap-fit ​​section snaps into the bottom of the female head of the anchor lock. The male threaded section is connected to the male head of the pile.

[0013] Further defined, the female locking anchor includes a limiting section and a female threaded section. The limiting section is a frustum and is located below the female threaded section. Both the limiting section and the female threaded section are sleeved on the outside of the mating section. The female threaded section is located below the male threaded section. The upper bottom surface of the limiting section contacts the lower bottom surface of the snap-fit ​​section. The female threaded section is connected to the female pile head.

[0014] Furthermore, both the male and female ends of the anchor lock are hot-rolled round steel parts.

[0015] The beneficial effects of this utility model are as follows: 1. This utility model achieves the connection between adjacent pipe pile bodies by setting multiple locking and anchoring connectors at the ends of the pipe pile body. This avoids the need for workers to go down into the pilot pit to perform welding operations in a confined space, ensuring the safety of workers, preventing the generation of harmful gases, and protecting the environment. At the same time, the splicing method of locking and anchoring connectors further reduces the connection difficulty, improves work efficiency, and meets the actual construction needs.

[0016] 2. This utility model uses the plug-in connection between the male and female heads of the anchor bolts to connect two adjacent pipe pile bodies. The connection method is simple and convenient, the structure is simple and low-cost, easy to modify, the materials are easy to purchase, and it is easy to mass-produce. It is adaptable to the actual construction environment. By optimizing the anchor bolt connector, the connection is guaranteed to be stable and reliable, meeting the construction quality requirements. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the weld-free connection of precast concrete pipe piles according to this utility model; Figure 2 This is an exploded view of the weld-free precast concrete pipe pile of this utility model; Figure 3 This is a schematic diagram of the anchor lock connector of this utility model; Figure 4 This is a schematic diagram of the female head structure of the anchor lock of this utility model; Figure 5 This is a schematic diagram of the male head structure of the anchor locking component of this utility model.

[0018] In the diagram, 10-Pile body; 11-Pile male head; 12-Pile female head; 20-Anchor locking male head; 21-Snap-fit ​​section; 22-Matching section; 23-Male head threaded section; 30-Anchor locking female head; 31-Limiting section; 32-Female head threaded section; 40-Embedded reinforcement; 41-Male flange; 42-Female flange. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Example 1 refer to Figures 1-5This utility model provides a weld-free connection for precast concrete pipe piles, including a pipe pile body 10 and locking anchor connectors. During construction, there are multiple pipe pile bodies 10, which need to be connected sequentially from top to bottom. There are also multiple locking anchor connectors, arranged in an array between adjacent pipe pile bodies 10, connecting them. Locking anchor connectors are not required at the bottom of the lowest pipe pile body 10 or the top of the highest pipe pile body 10. During connection, adjacent pipe pile bodies 10 are securely connected by locking anchor connectors, avoiding manual welding operations in the guide pit, ensuring a safe working environment, preventing the generation of harmful gases, and protecting the environment. It also eliminates on-site manual labor, reduces operational difficulty, and improves work efficiency.

[0024] Specifically, the anchoring connector includes a male anchor head 20 and a female anchor head 30. For ease of explanation, one end of the pipe pile body 10 is designated as the male anchor head 11, and the other end as the female anchor head 12. The male anchor heads 20 are arrayed around the axis of the pipe pile body 10 on the male anchor head 11, and the female anchor heads 30 are arrayed around the axis of the pipe pile body 10 on the female anchor head 12. The male anchor heads 20 and female anchor heads 30 correspond one-to-one, and the connection between two adjacent pipe pile bodies 10 is achieved by the cooperation of the male anchor heads 20 and female anchor heads 30. The number of anchoring connectors can be determined in advance by experiments according to construction requirements, so that the total tensile bearing capacity of all anchoring connectors is not less than the measured tensile bearing capacity of the pile body, ensuring the bearing capacity requirements of the precast concrete pile under axial compression and eccentric compression, and ensuring the connection safety and reliability of the pile body.

[0025] For ease of connection, a male flange 41 is preferably provided on the end face of the male pile head 11, and the male anchor 20 is connected to the male pile head 11 through the male flange 41; a female flange 42 is provided on the end face of the female pile head 12, and the female anchor 30 is connected to the female pile head 12 through the female flange 42. The male flange 41 and the female flange 42 are connected simultaneously during the prefabrication of the pipe pile body 10.

[0026] Both the male flange 41 and the female flange 42 are connected to the pipe pile body 10 through pre-embedded reinforcing bars 40. There are multiple pre-embedded reinforcing bars 40, which are arranged circumferentially around the axis of the pipe pile body 10. The pre-embedded reinforcing bars are laid and connected to the male flange 41 and the female flange 42 during the prefabrication of the pipe pile body 10 to ensure structural stability and reliability.

[0027] Further optimization involves threading the male anchor 20 to the male flange 41 and the female anchor 30 to the female flange 42; thus, it is necessary to pre-machine internal threads on the male flange 41 and the female flange 42; and to complete the pre-construction preparation by connecting the male anchor 20 and the female anchor 30 respectively before construction.

[0028] To further explain, the top of the male anchor 20 and the top of the female anchor 30 are threaded. The top of the female anchor 30 is flush with the upper end face of the female flange 42, and the bottom of the female anchor 30 extends into the female flange 42. Therefore, multiple mating holes are opened in the pile female head 12, and the bottom of the female anchor 30 extends into the mating holes to avoid gaps between adjacent pipe pile bodies 10 when the male anchor 20 and the female anchor 30 are mated.

[0029] To further explain, the male anchor 20 includes a snap-fit ​​section 21, a mating section 22, and a male threaded section 23 connected in sequence. Both the snap-fit ​​section 21 and the mating section 22 are frustum bodies. The outer diameter of the upper bottom surface of the mating section 22 is smaller than the outer diameter of the lower bottom surface of the mating section 22. The outer diameter of the upper bottom surface of the snap-fit ​​section 21 is smaller than the outer diameter of the lower bottom surface of the snap-fit ​​section 21. The upper bottom surface of the mating section 22 is connected to the lower bottom surface of the snap-fit ​​section 21 and is coaxially arranged. The outer diameter of the upper bottom surface of the mating section 22 is smaller than the outer diameter of the lower bottom surface of the snap-fit ​​section 21. The male threaded section 23 is threadedly connected to the male flange 41. Both the snap-fit ​​section 21 and the mating section 22 are located on the outside of the male flange 41.

[0030] During mating, the snap-fit ​​section 21 and the mating section 22 are inserted into the locking anchor head 30. The snap-fit ​​section 21 extends to the outside of the locking anchor head 30, and the locking anchor head 30 is fitted onto the outside of the mating section 22. The outer diameter of the bottom surface of the snap-fit ​​section 21 is larger than the inner diameter of the bottom of the locking anchor head 30, so that the bottom surface of the snap-fit ​​section 21 is snapped into the bottom of the locking anchor head 30, preventing the locking anchor head 30 from detaching from the mating section 22 and ensuring a stable and reliable connection.

[0031] Correspondingly, the female anchor 30 includes a limiting section 31 and a female threaded section 32. The limiting section 31 is a frustum and is located below the female threaded section 32. Both the limiting section 31 and the female threaded section 32 are fitted onto the outside of the mating section 22. The top of the female threaded section 32 is flush with the bottom of the male threaded section 23. The inner diameter of the upper bottom surface of the limiting section 31 is smaller than the outer diameter of the lower bottom surface of the snap-fit ​​section 21. During mating, the snap-fit ​​section 21 passes through the female threaded section in sequence. Section 32 and limiting section 31 extend to the outside of limiting section 31 and engage with the outside of limiting section 31; in order to ensure that engaging section 21 can pass through limiting section 31, it is preferable that multiple movable slots are provided on limiting section 31, the movable slots are opened along the generatrix of limiting section 31, and the multiple movable slots are equally spaced around the axis of limiting section 31, so that limiting section 31 expands when engaging section 21 passes through, and limiting section 31 contracts to engage with engaging section 21 after engaging section 21 passes through.

[0032] The inner diameter of the mating hole is greater than the outer diameter of the bottom surface of the limiting section 31 to ensure the full expansion of the limiting section 31; at the same time, the depth of the mating hole is greater than the height of the limiting section 31 to ensure that the snap-fit ​​section 21 extends through the limiting section 31 into the mating hole.

[0033] In actual construction, the male head 11 of the first pipe pile body 10 is driven downwards until it is driven into the foundation soil, and then the second pipe pile body 10 is spliced ​​together.

[0034] Before splicing, connect the female head 30 of the anchoring part to the female head 12 of the first pipe pile body 10, so that the female head 30 of the anchoring part is flush with the upper end face of the female head flange 42, and connect the male head 20 of the anchoring part to the male head 11 of the second pipe pile body 10.

[0035] Then, the second pipe pile body 10 is hoisted, and the male head 11 of the second pipe pile body 10 is hoisted downwards to be directly above the female head 12 of the first pipe pile body 10. After aligning the male head 20 and the female head 30 of the anchoring parts one by one, it is moved downwards and pressure is applied to complete the connection of all anchoring parts, ensuring that the male flange 41 and the female flange 42 are tightly fitted, thus completing the splicing of two adjacent pipe pile bodies 10. This process is repeated until the splicing of all pipe pile bodies 10 is completed.

[0036] Both the male head 20 and the female head 30 of the anchor lock can be made of Q355B round steel with a diameter of not less than A20. The material has high strength and reliable connection. Hot-rolled round steel is used, which makes it easy to purchase materials, easy to process accessories, and easy to mass-produce. At the same time, it requires little modification to the original structure and is suitable for mass production.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications made to the technical solutions based on the technical concept proposed by this utility model shall fall within the scope of protection of the claims of this utility model.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A weld-free connection for precast concrete pipe piles, characterized in that, It includes a pipe pile body (10) and a locking anchor connector. The number of locking anchor connectors is multiple. Multiple locking anchor connector arrays are arranged between adjacent pipe pile bodies (10). Adjacent pipe pile bodies (10) are connected by locking anchor connectors. The anchor connector includes a male anchor (20) and a female anchor (30). One end of the pipe pile body (10) is the male anchor (11), and the other end of the pipe pile body (10) is the female anchor (12). The male anchor (20) is arranged in an array around the axis of the pipe pile body (10) on the male anchor (11), and the female anchor (30) is arranged in an array around the axis of the pipe pile body (10) on the female anchor (12). The male anchor (20) and the female anchor (30) correspond one-to-one.

2. The weld-free precast concrete pipe pile according to claim 1, characterized in that, The end face of the male pile head (11) is provided with a male flange (41), and the male anchor (20) is connected to the male pile head (11) through the male flange (41); the end face of the female pile head (12) is provided with a female flange (42), and the female anchor (30) is connected to the female pile head (12) through the female flange (42).

3. The weld-free precast concrete pipe pile according to claim 2, characterized in that, Both the male flange (41) and the female flange (42) are connected to the pipe pile body (10) through pre-embedded reinforcing bars (40).

4. The weld-free precast concrete pipe pile according to claim 3, characterized in that, The number of the pre-embedded bars (40) is multiple, and the multiple pre-embedded bars (40) are arranged circumferentially around the axis of the pipe pile body (10).

5. The weld-free precast concrete pipe pile according to claim 1, characterized in that, The male head (20) of the anchor lock is threaded to the male flange (41), and the female head (30) of the anchor lock is threaded to the female flange (42).

6. The weld-free precast concrete pipe pile according to claim 5, characterized in that, The top of the male anchor (20) is threaded, the top of the female anchor (30) is threaded, the top of the female anchor (30) is flush with the upper end face of the female flange (42), and the bottom of the female anchor (30) extends into the female flange (42).

7. The weld-free precast concrete pipe pile according to claim 1, characterized in that, The male anchor (20) includes a snap-fit ​​section (21), a mating section (22), and a male threaded section (23) connected in sequence. Both the snap-fit ​​section (21) and the mating section (22) are frustum bodies. The upper bottom surface of the mating section (22) is connected to the lower bottom surface of the snap-fit ​​section (21). The outer diameter of the upper bottom surface of the mating section (22) is smaller than the outer diameter of the lower bottom surface of the snap-fit ​​section (21). The female anchor (30) is sleeved on the outside of the mating section (22). The snap-fit ​​section (21) is snapped into the bottom of the female anchor (30). The male threaded section (23) is connected to the male anchor (11).

8. The weld-free precast concrete pipe pile according to claim 7, characterized in that, The locking anchor female head (30) includes a limiting section (31) and a female head threaded section (32). The limiting section (31) is a frustum and is connected below the female head threaded section (32). The limiting section (31) and the female head threaded section (32) are both sleeved on the outside of the mating section (22). The female head threaded section (32) is located below the male head threaded section (23). The upper bottom surface of the limiting section (31) is in contact with the lower bottom surface of the snap-fit ​​section (21). The female head threaded section (32) is connected to the pile female head (12).

9. The weld-free precast concrete pipe pile according to claim 1, characterized in that, Both the male end (20) and the female end (30) of the anchor lock are hot-rolled round steel parts.

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