Novel prefabricated PHC pipe pile

Abstract

The invention belongs to the field of PHC pipe piles, and provides a novel prefabricated PHC pipe pile which comprises a pipe pile body. The connecting assembly comprises a first connecting ring and a second connecting ring, the first connecting ring and the second connecting ring are fixed to the two ends of the pipe pile body respectively, a plurality of positioning plates are fixedly connected to the bottom face of the first connecting ring, a plurality of positioning grooves are formed in the upper surface of the second connecting ring, and the positioning plates and the positioning grooves are clamped; a fixing assembly; by arranging the connecting assembly and the fixing assembly, rapid alignment and accurate connection between the two sets of PHC pipe piles are achieved, the pipe piles can be rapidly and accurately positioned in the alignment process, the connecting efficiency is improved, and errors possibly generated in the connecting process are remarkably reduced.

Description

Technical Field

[0001] The invention belongs to the field of PHC pipe piles, in particular to a novel prefabricated PHC pipe pile. Background Art

[0002] Prefabricated PHC pipe piles are widely used in the foundation construction of building projects. Prefabricated PHC pipe piles are made by prestressing technology and centrifugal forming. They are made of high-strength concrete and high-strength steel as raw materials. They are produced through multiple strict processes such as batching, mixing, steel cage production, concrete pouring, centrifugal forming, autoclave curing, demoulding, etc. They have high dimensional accuracy and quality stability. They have the advantages of high single pile bearing capacity, good durability, strong penetration ability, and high construction efficiency. The concrete strength grade is not less than C80, and high-strength steel is used. It has strong compressive and bending bearing capacity, can reduce structural deformation and settlement, has a long service life, is suitable for a variety of geological conditions, can be factory-produced, and can effectively shorten the construction period.

[0003] The traditional PHC pipe pile connection method usually requires the use of equipment to align the positions of the two groups of pipe piles, and the welding operation is performed on the outer rings of the two pipe piles through welding equipment and operators. The pipe pile alignment process is time-consuming, and only the outer rings of the pipe piles are welded, which will affect the overall stability of the pipe pile connection structure.

[0004] Therefore, those skilled in the art have proposed a new type of prefabricated PHC pile to solve the problems raised in the background art. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a new prefabricated PHC pile to solve the problems in the prior art that, during the connection of PHC piles, the pile alignment process is time-consuming, and only the outer ring of the pile is welded, which affects the overall stability of the pile connection structure.

[0006] A novel prefabricated PHC pipe pile comprises: a pipe pile body;

[0007] The connecting assembly includes a first connecting ring and a second connecting ring, wherein the first connecting ring and the second connecting ring are respectively fixed to two ends of the pipe pile body, a plurality of positioning plates are fixedly connected to the bottom surface of the first connecting ring, and a plurality of positioning grooves are formed on the upper surface of the second connecting ring, and the positioning plates are engaged with the positioning grooves;

[0008] The fixing assembly comprises a guide groove, a return spring, a limit plate and a limit groove. The guide groove is provided on the peripheral side of the positioning plate, the limit groove is provided on the inner wall of the positioning groove, the inner wall of the guide groove is connected to the return spring, one end of the return spring is connected to the limit plate, and the limit plate is engaged with the limit groove.

[0009] Preferably, both side walls of the positioning plate are fixedly connected with guide parts, and both side walls of the positioning groove are provided with guide grooves, and the guide parts are engaged with the guide grooves.

[0010] Preferably, a disassembly component is also provided in the first connecting ring;

[0011] The disassembly assembly includes a screw rod, a traction plate, a traction rope and a connecting groove. A stretching groove is opened in the first connecting ring. The screw rod is rotatably connected in the stretching groove. A connecting groove is connected between the stretching groove and the guide groove. There are two groups of connecting grooves. The inner wall of the stretching groove is rotatably connected to the screw rod. The screw rod is threadedly matched with the traction plate. The traction rope is connected between the traction plate and the limit plate.

[0012] Preferably, the inner surface of the stretching groove is symmetrically rotationally connected with two groups of rolling rods, and the traction rope is located on the periphery of the rolling rods.

[0013] Preferably, one end of the screw rod is fixedly connected to a rotating rod, a rotating groove passes through the side wall of the stretching groove, the rotating rod is located in the rotating groove, and a groove is opened at one end of the rotating rod.

[0014] Preferably, a plurality of steel bars are cast in the pipe pile body, and a plurality of stirrups are fixed around the steel bars.

[0015] Preferably, the stirrups are welded to the circumferential sides of the steel bars to form welding spots.

[0016] Preferably, the number of the positioning plates and the number of the positioning grooves are both two.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention realizes rapid alignment and precise connection between two groups of PHC pipe piles by arranging a connecting component and a fixing component, so that the pipe piles can be quickly and accurately positioned during the alignment process, the connection efficiency is improved, and the errors that may occur during the connection process are significantly reduced. Moreover, through the positioning plate and the positioning groove, when the pipe piles are subjected to external loads, the stress can be effectively transmitted to the surrounding area of ​​the positioning groove, thus avoiding local damage caused by stress concentration, improving the bearing capacity of the pipe pile connection structure, and enabling it to better adapt to various complex geological conditions and load conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the pipe pile body;

[0021] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the present invention;

[0022] Figure 4 is a schematic diagram of a three-dimensional cross-sectional structure of a first connecting ring;

[0023] Figure 5 It is a schematic diagram of the right side structure of the pipe pile body.

[0024] In the figure:

[0025] 1. Pipe pile body; 2. Steel bars; 3. Hoops; 4. Welding points; 5. First connecting ring; 6. Second connecting ring; 7. Positioning plate; 8. Guide part; 9. Positioning groove; 10. Guide groove; 11. Guide groove; 12. Reset spring; 13. Limiting plate; 14. Limiting groove; 15. Connecting groove; 16. Traction rope; 17. Stretching groove; 18. Screw rod; 19. Traction plate; 20. Rolling rod; 21. Rotating groove; 22. Rotating rod; 23. Groove. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0027] Embodiment 1: As shown in the attached Figure 1 As shown: The present invention provides a novel prefabricated PHC pile, comprising a pile body 1, a connecting component and a fixing component;

[0028] As attached Figure 1 As shown: the connection assembly includes a first connection ring 5 and a second connection ring 6, which are respectively fixed to the two ends of the pipe pile body 1, a plurality of positioning plates 7 are fixedly connected to the bottom surface of the first connection ring 5, and a plurality of positioning grooves 9 are opened on the upper surface of the second connection ring 6, and the positioning plates 7 are engaged with the positioning grooves 9;

[0029] As attached Figure 5 As shown: both side walls of the positioning plate 7 are fixedly connected with guide parts 8, and both side walls of the positioning groove 9 are provided with guide grooves 10, and the guide parts 8 are engaged with the guide grooves 10; the number of the positioning plates 7 and the positioning grooves 9 are both two groups; by providing the first connecting ring 5 and the second connecting ring 6, it is convenient to connect the two groups of PHC piles, and the connection convenience is improved; when the pile body 1 is aligned with another pile, the positioning plate 7 contacts the guide groove 10, and the guide groove 10 quickly cooperates with the guide part 8, and guides the positioning plate 7 into the positioning groove 9, so as to realize the rapid alignment of the two groups of pile bodies 1, and ensure that the two pile ends can be stably fitted;

[0030] By providing the positioning plate 7 and the positioning groove 9, the two groups of pipe pile bodies 1 can be accurately aligned when connected; when the pipe pile bodies 1 are moved to a position close to each other, the positioning plate 7 will accurately slide into the positioning groove 9, ensuring a seamless connection between the pipe piles and avoiding connection deviation or instability caused by inaccurate alignment; not only the connection efficiency is improved, but also the errors that may occur during the connection process are reduced, thereby ensuring the overall quality and reliability of the pipe pile connection structure.

[0031] The snap-fitting effect of the positioning plate 7 and the positioning groove 9 provides additional stability for the connection between the pipe pile body 1. Once the positioning plate 7 is fully inserted into the positioning groove 9, the tight fit between them forms a stable connection point to ensure that they can withstand various loads and maintain the stability of the connection; it helps to disperse the stress at the pipe pile connection; when the pipe pile is subjected to external loads, the positioning plate 7 will transfer the stress to the surrounding area of ​​the positioning groove 9, thereby avoiding local damage caused by stress concentration; this stress dispersion effect improves the bearing capacity of the pipe pile connection structure, enabling it to better adapt to various complex geological conditions and load conditions.

[0032] As attached Figure 3 and attached Figure 4 As shown: the fixing assembly includes a guide groove 11, a return spring 12, a limit plate 13 and a limit groove 14. The guide groove 11 is opened on the periphery of the positioning plate 7, and the limit groove 14 is opened on the inner wall of the positioning groove 9. The inner wall of the guide groove 11 is connected to the return spring 12, and one end of the return spring 12 is connected to the limit plate 13. The limit plate 13 is engaged with the limit groove 14; when the positioning plate 7 is inserted into the positioning groove 9 along the guide groove 10, the limit plate 13 is pressed into the guide groove 11 under the influence of the wedge surface. When the positioning plate 7 falls, the limit plate 13 is always pressed in the guide groove 11. After the plate 7 is fully engaged, the position of the guide groove 11 is aligned with the limit groove 14. At this time, the reset spring 12 is reset, and the limit plate 13 is clamped into the limit groove 14, achieving the installation stability between the first connecting ring 5 and the second connecting ring 6, thereby ensuring the connection stability between the two groups of pipe piles, and cooperating with the positioning plate 7 and the positioning groove 9 to ensure the connection stability at the inner walls of the two pipe piles, avoiding the separation of the two groups of pipe piles under the action of bending moment, and reducing the overall stability of the pipe pile connection structure; when the two groups of pipe piles are fully connected, the operator performs welding connection at the complete position.

[0033] As attached Figure 4As shown: a disassembly assembly is also provided in the first connecting ring 5; the disassembly assembly includes a screw rod 18, a traction plate 19, a traction rope 16 and a connecting groove 15. A stretching groove 17 is provided in the first connecting ring 5, the screw rod 18 is rotatably connected in the stretching groove 17, the connecting groove 15 is connected between the stretching groove 17 and the guide groove 11, and the connecting groove 15 is provided in two groups. The inner wall of the stretching groove 17 is rotatably connected to the screw rod 18, the screw rod 18 is threadedly matched with the traction plate 19, the traction plate 19 slides in the stretching groove 17, and the traction rope 16 is connected between the traction plate 19 and the limiting plate 13; a rotating rod 22 is fixedly connected to one end of the screw rod 18, a rotating groove 21 is penetrated at the side wall of the stretching groove 17, the rotating rod 22 is located in the rotating groove 21, and a groove 23 is provided at one end of the rotating rod 22; by placing the rotating rod 22 in the rotating groove 21, it is effectively avoided;

[0034] In the scenario of building renovation or demolition, the first connecting ring 5 needs to be separated from the second connecting ring 6. By inserting a tool such as a screwdriver into the groove 23, the rotating rod 22 can be rotated through the groove 23. The rotating rod 22 drives the screw rod 18 to rotate, and the screw rod 18 cooperates with the traction plate 19 to move in the stretching groove 17. Due to the displacement of the traction plate 19, the two sets of traction ropes 16 can be quickly pulled. Since one end of the traction rope 16 is pulled, the other end of the traction rope 16 stably pulls the limit plate 13, and the limit plate 13 is quickly pulled out of the limit groove 14, so that the two sets of connecting rings can be separated when the outer rings of the first connecting ring 5 and the second connecting ring 6 are not welded, thereby improving the convenience of disassembly.

[0035] The inner surface of the stretching groove 17 is symmetrically rotatably connected with two sets of rolling rods 20, and the traction rope 16 is located around the rolling rod 20; by setting the rolling rod 20, the wear of the traction rope 16 during the stretching process is reduced, and the stability of the disassembly assembly is greatly improved.

[0036] As can be seen from the above, when two groups of PHC piles need to be connected, the two ends of the pile body 1 are first aligned, that is, the first connecting ring 5 is opposite to the second connecting ring 6; during the alignment process, the guide portion 8 on the positioning plate 7 will first contact and slide into the guide groove 10, which helps to quickly and accurately guide the positioning plate 7 into the positioning groove 9; once the positioning plate 7 is fully inserted into the positioning groove 9, the return spring 12 will push the limit plate 13 to pop out of the guide groove 11 and insert it into the limit groove 14, thereby ensuring a stable connection between the first connecting ring 5 and the second connecting ring 6.

[0037] At this time, the two groups of pipe pile bodies 1 are not only physically aligned and connected through the positioning plate 7 and the positioning groove 9, but also the stability of the connection is further enhanced through the cooperation of the limiting plate 13 and the limiting groove 14; finally, the operator can weld at the connection to further enhance the strength and durability of the connection.

[0038] When disassembly is required, first use a tool such as a screwdriver to insert it into the groove 23 of the rotating rod 22, and rotate the rotating rod 22 to drive the screw rod 18 to rotate; the rotation of the screw rod 18 will drive the traction plate 19 to move in the stretching groove 17, and then pull the limit plate 13 out of the limit groove 14 through the traction rope 16; once the limit plate 13 withdraws from the limit groove 14, the connection between the first connecting ring 5 and the second connecting ring 6 will be released, thereby allowing the two groups of pipe pile bodies 1 to be separated; in this process, the presence of the rolling rod 20 reduces the wear of the traction rope 16, and improves the stability and durability of the disassembly assembly.

[0039] Embodiment 2: As shown in the attached Figure 2 As shown: this embodiment is basically the same as the previous embodiment, except that a plurality of steel bars 2 are cast in the pipe pile body 1, a plurality of stirrups 3 are fixed around the steel bars 2, and welding points 4 are welded between the stirrups 3 and the steel bars 2.

[0040] As can be seen from the above, firstly, according to the design requirements of the pipe pile, the raw materials of the steel bars 2 of the required specifications and lengths are prepared. The steel bars 2 are placed on the loading rack of the automatic seam welding machine to ensure that the steel bars can be smoothly transported to the processing area.

[0041] Start the automatic seam welding machine and set the spacing, diameter and welding parameters of the stirrups 3 through the control system.

[0042] The roll welder automatically transports the steel bar 2 to the rotating work area and starts to automatically bend the stirrups 3 around the steel bar 2. While the stirrups 3 are being formed, the welding device of the roll welder automatically welds the stirrups 3 at the contact point with the steel bar 2 to form a strong weld 4. With the rotation of the roll welder and the continuous advancement of the steel bar 2, the stirrups 3 of the entire steel cage are set and welded in sequence to produce a steel cage that meets the requirements.

[0043] Carefully hoist the prepared steel cage into the rotating mold, ensuring that the steel cage is centered in the mold and in the correct position.

[0044] Then, the first connection ring 5 and the second connection ring 6 prepared in advance are placed at the two ends of the mold of the pile body 1, so that they are accurately connected with the corresponding ends of the steel cage. Then, the connection ring and the steel cage are fixed together by welding or other reliable connection methods to ensure that the connection ring and the steel cage form an integral structure, and the connection is firm and the position is stable.

[0045] High-strength concrete is slowly injected into the rotating mold where the steel cage and the connecting ring are placed; during the pouring process, the rotating device of the rotating mold is started to make the mold rotate slowly at a certain speed.

[0046] At the same time, the concrete is vibrated by the vibrating device in the mold. The vibrating device can be in the form of an internal vibrating rod or an attached vibrator. During the rotation of the mold, the vibrating device vibrates the concrete in all directions to ensure that the concrete can be evenly filled into all parts of the steel cage, remove bubbles in the concrete, and make the concrete density meet the design requirements.

[0047] After the concrete pouring is completed, stop the mold rotation and vibrating device; transfer the rotating mold to the curing area. According to the curing process requirements, steam curing or natural curing can be used to cure the piles. During steam curing, it is necessary to control the curing temperature, humidity and curing time to accelerate the growth of concrete strength.

[0048] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present invention.

[0049] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0053] In the drawings of the embodiments disclosed in the present invention, only the structures involved in the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0054] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of prefabricated PHC pile, characterized in that: include: Pipe pile body (1); The connecting assembly comprises a first connecting ring (5) and a second connecting ring (6), wherein the first connecting ring (5) and the second connecting ring (6) are respectively fixed to two ends of the pipe pile body (1), a plurality of positioning plates (7) are fixedly connected to the bottom surface of the first connecting ring (5), a plurality of positioning grooves (9) are formed on the upper surface of the second connecting ring (6), and the positioning plates (7) are engaged with the positioning grooves (9); The fixing assembly comprises a guide groove (11), a return spring (12), a limit plate (13) and a limit groove (14); the guide groove (11) is provided on the peripheral side of the positioning plate (7); the limit groove (14) is provided on the inner wall of the positioning groove (9); the inner wall of the guide groove (11) is connected to the return spring (12); one end of the return spring (12) is connected to the limit plate (13); and the limit plate (13) is engaged with the limit groove (14).

2. A novel prefabricated PHC pile as claimed in claim 1, characterized in that: Both side walls of the positioning plate (7) are fixedly connected with guide parts (8), and both side walls of the positioning groove (9) are provided with guide grooves (10), and the guide parts (8) are engaged with the guide grooves (10).

3. A novel prefabricated PHC pile as claimed in claim 2, characterized in that: A disassembly component is also provided in the first connecting ring (5); The disassembly assembly comprises a screw rod (18), a traction plate (19), a traction rope (16) and a connecting groove (15); a stretching groove (17) is provided in the first connecting ring (5); the screw rod (18) is rotatably connected to the stretching groove (17); a connecting groove (15) is connected between the stretching groove (17) and the guide groove (11); the connecting groove (15) is provided in two groups; the inner wall of the stretching groove (17) is rotatably connected to the screw rod (18); the screw rod (18) is threadedly matched with the traction plate (19); and the traction rope (16) is connected between the traction plate (19) and the limiting plate (13).

4. A novel prefabricated PHC pile as claimed in claim 3, characterized in that: The inner surface of the stretching groove (17) is symmetrically rotationally connected to two groups of rolling rods (20), and the traction rope (16) is located on the peripheral side of the rolling rod (20).

5. A novel prefabricated PHC pile as claimed in claim 4, characterized in that: One end of the screw rod (18) is fixedly connected to a rotating rod (22), a rotating groove (21) penetrates through the side wall of the stretching groove (17), the rotating rod (22) is located in the rotating groove (21), and a groove (23) is formed at one end of the rotating rod (22).

6. A novel prefabricated PHC pile as claimed in claim 1, characterized in that: A plurality of steel bars (2) are cast inside the pipe pile body (1), and a plurality of stirrups (3) are fixed around the steel bars (2).

7. A novel prefabricated PHC pile as claimed in claim 6, characterized in that: The stirrups (3) and the steel bars (2) are welded to form welding points (4) on the circumferential sides.

8. The novel prefabricated PHC pile according to claim 1, characterized in that: The number of the positioning plates (7) and the number of the positioning grooves (9) are both two.

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