A prestressed composite material pipe pile

Abstract

The utility model relates to the field of pipe piles, specifically refers to a prestressed composite pipe pile, including a pile body and concrete cast in the pile body, the pile body including a pile casing, a pile bottom assembly arranged at the bottom end of the pile casing, a pile top assembly arranged at the top of the pile casing, a pile skeleton arranged in the pile casing; the pile bottom assembly includes a pile bottom plate, a plurality of sleeves evenly distributed in a circular ring shape are arranged on the pile bottom plate; the pile top assembly includes a pile top plate, a plurality of sleeves evenly distributed in a circular ring shape are also arranged on the pile top plate, the reinforcing bar rod can be inserted into the sleeve on the pile top plate, a casting hole is arranged at the center of the pile top plate; the pile skeleton includes a plurality of reinforcing bar rods corresponding to the sleeves and stirrups to be arranged outside the reinforcing bar rods. The utility model combines the advantages of the high-performance fiber-reinforced composite outer wall and the prestressed composite ribs, significantly improving the bearing capacity, crack resistance and durability to meet the technical requirements of modern engineering for pile foundation technology.

Description

Technical Field

[0001] The utility model relates to the field of pipe piles, in particular to a prestressed composite material pipe pile. Background Art

[0002] In the construction industry, although traditional reinforced concrete pipe piles are widely used, they have disadvantages such as heavy weight, easy corrosion, long construction period, etc. In order to solve these problems, the utility model proposes an innovative prestressed composite material pipe pile. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the above-mentioned technology and provide a prestressed composite material pipe pile.

[0004] A prestressed composite material pipe pile, comprising a pile body and concrete poured in the pile body, wherein the pile body comprises a pile casing, a pile bottom assembly arranged at the bottom end of the pile casing, a pile top assembly is arranged at the top end of the pile casing, and a pile frame is arranged inside the pile casing;

[0005] The pile bottom assembly comprises a pile bottom plate, and the pile bottom plate is provided with a plurality of sleeves evenly distributed in a circular shape;

[0006] The pile top assembly includes a pile top plate, and the pile top plate is also provided with a plurality of sleeves evenly distributed in a circular shape, the reinforcing bar rod can be inserted into the sleeves on the pile top plate, and a casting hole is provided at the center of the pile top plate;

[0007] The pile skeleton comprises a plurality of reinforcing bar rods corresponding to the sleeves and stirrups to be arranged outside the reinforcing bar rods.

[0008] Furthermore, the sleeve includes an external thread section and a sleeve section, and the pile top plate and the pile bottom plate are both provided with penetrating stepped holes on their sides away from the reinforcing rib rods, and the external thread section of the sleeve passes through the stepped holes and is locked and connected by a nut.

[0009] Furthermore, a plurality of positioning members are provided at intervals along the axial direction on the plurality of uniformly distributed reinforcing rib rods.

[0010] Furthermore, the stirrups may be of, but not limited to, spiral or parallel types.

[0011] Furthermore, a pile collar is provided on one side of the pile top plate close to the reinforcing bar and a pile collar is provided on one side of the pile bottom plate close to the reinforcing bar, and two ends of the pile casing are correspondingly inserted into the pile collar.

[0012] Further, pile casing: casing made of high-performance fiber-reinforced composite materials such as basalt fiber, glass fiber or carbon fiber, replacing the traditional concrete protective layer to enhance the strength and corrosion resistance of the pipe pile;

[0013] Furthermore, the reinforcement bar material: prestressed composite material bars are used to replace the prestressed steel bars of traditional pipe piles. The material is basalt fiber composite bars or glass fiber composite bars. Prestress is applied to improve the bearing capacity and crack resistance of the bars.

[0014] Furthermore, the pile bottom plate and pile top plate are designed as follows: a metal end plate with a pile collar is introduced as a construction protection sleeve to prevent damage to the composite material casing during the pile sinking process, and the pile connection is achieved through end plate welding.

[0015] Advantages of the utility model: The utility model combines the advantages of the pile casing of high-performance fiber-reinforced composite materials and prestressed composite bars, significantly improving the bearing capacity, crack resistance and durability to meet the technical requirements of modern engineering for pile foundation technology;

[0016] 1. Pile casing, i.e. prestressed composite material pile, adopts fiber-reinforced composite material casing and prestressed composite material reinforcement, which has good mechanical properties and durability, and can effectively improve the bearing capacity of the pile;

[0017] 2. By applying prestress to the reinforcing bar, i.e. the composite bar, the composite bar can be kept vertical during concrete pouring, and the compressive stress caused by the load can be fully or partially offset during use, thereby improving the deformation resistance and crack resistance of the pipe pile;

[0018] 3. Use metal carbon steel nuts, metal carbon steel sleeves and adhesives to fix prestressed reinforcing bars, which is simple to construct and has good connection performance;

[0019] 4. The pile casing is filled with concrete to make the pile have higher overall strength and stability;

[0020] 5. Pipe piles are suitable for a variety of geological conditions, especially in soft soil areas and marine engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a composite material pipe pile of the utility model;

[0022] Figure 2 This is a schematic diagram of a pile top assembly of a composite material pipe pile of the utility model;

[0023] Figure 3 This is a schematic diagram of a pile bottom component of a composite material pipe pile of the utility model;

[0024] Figure 4 The utility model is a schematic diagram of the installation of a sleeve of a composite material pipe pile.

[0025] As shown in the figure: 1. Pile bottom plate; 2. Sleeve; 3. Reinforcement rod; 4. Hoops; 5. Pile top plate; 6. Casting hole; 7. Step hole; 8. Nut; 9. Pile hoop; 10. Pile casing; 201. External thread section; 202. Socket section. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and 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 understood as a limitation on the present invention.

[0027] In addition, 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. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] In the description of the embodiments of the present utility model, if a feature is referred to as being "set", "fixed", "connected" or "installed" on another feature, it may be directly set, fixed, connected to another feature, or indirectly set, fixed, connected, or installed on another feature.

[0029] In the description of the embodiments of the present utility model, if "several" is involved, it means more than one, if "multiple" is involved, it means more than two, if "greater than", "less than" or "exceed" is involved, it should be understood as not including the number itself, if "above", "below" or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0031] like Figure 1-4As shown, a composite material pipe pile comprises a pile body and concrete poured in the pile body, characterized in that: the pile body comprises a pile casing 10, a pile bottom assembly arranged at the bottom end of the pile casing 10, a pile top assembly is arranged at the top end of the pile casing 10, and a pile frame is arranged inside the pile casing 10;

[0032] The pile bottom assembly comprises a pile bottom plate 1, on which a plurality of sleeves 2 evenly distributed in a circular shape are provided;

[0033] The pile top assembly includes a pile top plate 5, on which a plurality of sleeves 2 are evenly distributed in a circular shape are also provided, and the reinforcing bar rod 3 can be inserted into the sleeves 2 on the pile top plate 5, and a casting hole 6 is provided at the center of the pile top plate 5;

[0034] The pile skeleton includes a plurality of reinforcing bar rods 3 corresponding to the sleeve 2 and stirrups 4 to be arranged outside the reinforcing bar rods 3;

[0035] The sleeve 2 includes an external thread section 201 and a sleeve section 202. The pile top plate 5 and the pile bottom plate 1 are both provided with a stepped hole 7 on the side away from the reinforcing bar rod 3. The external thread section 201 of the sleeve 2 passes through the stepped hole 7 and is locked and connected by a nut 8.

[0036] A plurality of positioning members 9 are provided at intervals along the axial direction on the plurality of uniformly distributed reinforcing rib rods 3;

[0037] The stirrups 4 are of but not limited to spiral type and parallel type;

[0038] A pile collar 9 is provided on the side of the pile top plate 1 close to the reinforcing bar 3 and a side of the pile bottom plate 5 close to the reinforcing bar 3 , and two ends of the pile sleeve 10 are correspondingly inserted into the pile collar 9 .

[0039] The specific manufacturing method of the utility model when using the pile top component and the pile bottom component is as follows:

[0040] Step 1: Use metal carbon steel sleeves 2 to fix the two ends of the prestressed reinforcing bar 3, and bond them with adhesive until they are completely cured;

[0041] Step 2: welding the pile collar 9 to the pile bottom plate 1 and the pile top plate 5, and processing a casting hole 6 on the pile top plate 5;

[0042] Step 3: tighten the prestressed reinforcing bar rod 3 bonded by the sleeve 2 to keep it in a vertical state, use stirrups 4 to wrap around the reinforcing bar rod 3 to which stress is applied according to the spacing between the densified area and the non-densified area to form a composite reinforcement cage, and use metal wire ties to fix the contact points;

[0043] Step 4, taking the composite reinforcement cage from the special equipment and putting it into the pile casing 10, and installing the pile top assembly and the pile bottom assembly on the pile casing;

[0044] Step 5, filling the pile casing 10 with concrete through the casting hole 6, the concrete grade is C30-C60, (wherein 0.5-2% volume ratio of chopped yarn is mixed, and the material of the chopped yarn is basalt fiber chopped yarn, polypropylene fiber chopped yarn, glass fiber chopped yarn, polyester fiber chopped yarn, polyvinyl alcohol fiber chopped yarn, etc.; the admixture of concrete can enhance the crack resistance and toughness of concrete, and improve the strength and durability of concrete;) in order to ensure that the concrete can smoothly fill the inside of the pipe pile, it is necessary to continuously vibrate during the process of adding concrete;

[0045] Step six: After the concrete pouring is completed, the piles are cured until the concrete reaches the designed strength. The curing time is determined according to the temperature and concrete strength requirements.

[0046] Step seven, according to different soil layers and engineering requirements, corresponding metal pile tips can be selected and welded to the pile bottom plate 1, which is not shown in the accompanying drawings.

[0047] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A prestressed composite material pipe pile, comprising a pile body and concrete poured in the pile body, characterized in that: The pile body comprises a pile casing (10), a pile bottom assembly arranged at the bottom end of the pile casing (10), a pile top assembly is arranged at the top end of the pile casing (10), and a pile frame is arranged inside the pile casing (10); The pile bottom assembly comprises a pile bottom plate (1), on which a plurality of sleeves (2) evenly distributed in a circular shape are provided; The pile top assembly comprises a pile top plate (5), and the pile top plate (5) is also provided with a plurality of sleeves (2) evenly distributed in a circular shape; The pile skeleton comprises a plurality of reinforcing bar rods (3) corresponding to the sleeves (2) and stirrups (4) arranged outside the reinforcing bar rods (3); The reinforcing bar rod (3) can be inserted into a sleeve (2) on the pile top plate (5), and a casting hole (6) is provided at the center of the pile top plate (5).

2. The prestressed composite material pipe pile according to claim 1, characterized in that: The sleeve (2) comprises an external thread section (201) and a sleeve section (202); a side of the pile top plate (5) away from the reinforcing rib rod (3) and a side of the pile bottom plate (1) away from the reinforcing rib rod (3) are both provided with a through stepped hole (7); the external thread section (201) of the sleeve (2) passes through the stepped hole (7) and is locked and connected via a nut (8).

3. The prestressed composite material pipe pile according to claim 1, characterized in that: The stirrups (4) may be of, but not limited to, spiral or parallel type.

4. The prestressed composite material pipe pile according to claim 2, characterized in that: A pile collar (9) is provided on the side of the pile top plate (5) close to the reinforcing bar rod (3) and a side of the pile bottom plate (1) close to the reinforcing bar rod (3), and two ends of the pile sleeve (10) are correspondingly inserted into the pile collar (9).

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