High-strength prestressed pipe pile

Abstract

The utility model relates to the technical field of prestressed pipe piles, in particular to a high-strength prestressed pipe pile which comprises a prestressed pipe pile body, an anti-collapse metal sleeve is sleeved on the side wall of the outer end of the prestressed pipe pile body, metal blocks are installed at the front end and the rear end of the prestressed pipe pile body through fastening bolts, and the anti-collapse metal sleeve is located between the two metal blocks. The outer wall is flush with the outer wall of the metal block; the multiple reinforcing devices are additionally arranged on the outer sides of the two pipe pile metal end plates of the prestressed pipe pile at equal intervals, the outer side of the prestressed pipe pile is sleeved with the anti-cracking metal sleeve, and prestress adjustment can be conducted on the outer side of the pipe pile by adjusting the multiple anti-cracking reinforcing devices; by adjusting the anti-cracking reinforcing devices, the adjusted anti-cracking reinforcing devices form a maximum tensile stress on the outer side of the prestressed pipe pile, but under the action of the anti-cracking reinforcing devices, the size change of the whole pipe pile system is always kept within a certain range, so that the pipe pile is prevented from cracking in the stress process.

Description

Technical Field

[0001] The utility model relates to the technical field of prestressed pipe piles, in particular to a high-strength prestressed pipe pile. Background Art

[0002] Prestressed pipe piles are a foundation engineering construction technology. Its main feature is to embed steel bars or prestressed steel strands in steel pipes, stretch the steel to generate prestress, and then pour concrete to fix it underground. Prestressed pipe piles can provide strong bearing capacity and excellent earthquake resistance, and are widely used in high-rise buildings, power facilities, water conservancy projects and other fields.

[0003] However, after the prestressed pipe piles are installed inside the building, the building terrain is changeable, so in many cases the forces on different parts of the prestressed pipe piles inside the building will be different. When the force on one side of the prestressed pipe pile is too large, it will easily destroy the strength of the pile body, causing the prestressed pipe pile to crack and damage. Utility Model Content

[0004] The utility model aims to provide a high-strength prestressed pipe pile to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-strength prestressed pipe pile, comprising: a prestressed pipe pile body, the outer end side wall of the prestressed pipe pile body is sleeved with an anti-collapse metal sleeve, the front and rear ends of the prestressed pipe pile body are both installed with metal blocks by fastening bolts, the anti-collapse metal sleeve is located between the two metal blocks, and the outer wall is flush with the outer wall of the metal block;

[0006] A plurality of reinforcement structures are evenly and fixedly installed on the outer walls of the two metal blocks.

[0007] Preferably, a reinforcing rib is provided inside the prestressed pipe pile body, and one end of the reinforcing rib passes through the front and rear ends of the prestressed pipe pile body.

[0008] Preferably, a plurality of steel bar insertion holes and fixing holes are evenly arranged on the side walls of the metal block, the steel bar insertion holes and the fixing holes are cross-arranged, the fixing holes penetrate the front and rear end side walls of the metal block, and the fixing holes are convex.

[0009] Preferably, a limiting sleeve is fixedly installed on the inner end side wall of the metal block, one end of the reinforcing rib is inserted into the fixing hole and then threadedly connected with the fastening bolt, at which time the metal block is fixed at the end of the prestressed pipe pile body, and the limiting sleeve is inserted into the prestressed pipe pile body.

[0010] Preferably, the reinforcing device comprises a fixing block and a reinforcing screw, and the fixing block is provided with a plurality of blocks, a side wall of the fixing block is provided with a through hole, and the fixing block is evenly fixedly mounted on the outer wall of the metal block.

[0011] Preferably, a baffle is fixedly mounted on the side wall of one end of the reinforcing screw rod, and the other end of the reinforcing screw rod passes through the fixing blocks on the two metal blocks in sequence and is threadedly connected with a nut.

[0012] Preferably, the length of the reinforcing screw is smaller than the length between the outer portions of the rear ends of the two metal blocks.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By adding multiple reinforcement devices at equal intervals on the outside of the two metal end plates of the prestressed pipe pile, and sleeved with an anti-collapse metal sleeve on the outside of the prestressed pipe pile, after the prestressed pipe pile is buried in the building, the prestressing can be adjusted on the outside of the pipe pile by adjusting the multiple anti-collapse reinforcement devices, so that the multiple adjusted anti-collapse reinforcement devices form a maximum tensile stress on the outside of the prestressed pipe pile. With the continuous compaction of the soil and the increase of surface load, the load of the prestressed pipe pile gradually increases, but under the action of the anti-collapse reinforcement device, the dimensional change of the entire pipe pile system is always kept within a certain range, thereby avoiding the collapse of the pipe pile during the stress process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an exploded view of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the metal block structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the overall structure of the utility model.

[0018] In the figure: 1. Prestressed pipe pile body; 2. Reinforcement ribs; 3. Metal block; 4. Rebar insertion hole; 5. Fixing hole; 6. Fixing block; 7. Through hole; 8. Limiting sleeve; 9. Anti-collapse metal sleeve; 10. Reinforcement screw; 11. Baffle; 12. Fastening bolt. DETAILED DESCRIPTION

[0019] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present utility model, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0023] See also Figures 1 to 3 The utility model provides a technical solution: a high-strength prestressed pipe pile, comprising: a prestressed pipe pile body 1, an anti-collapse metal sleeve 9 is sleeved on the outer end side wall of the prestressed pipe pile body 1, and metal blocks 3 are installed on the front and rear ends of the prestressed pipe pile body 1 through fastening bolts 12, the anti-collapse metal sleeve 9 is located between the two metal blocks 3, and the outer wall is flush with the outer wall of the metal block 3, and a reinforcing rib 2 is arranged inside the prestressed pipe pile body 1, and the reinforcing rib 2 is a vertical steel bar on the steel cage, and the two ends of the reinforcing rib 2 respectively pass through the front and rear ends of the prestressed pipe pile body 1.

[0024] A plurality of steel bar insertion holes 4 and fixing holes 5 are evenly arranged on the side walls of the metal block 3, respectively. The steel bar insertion holes 4 and the fixing holes 5 are cross-arranged. The fixing holes 5 penetrate the front and rear end side walls of the metal block 3, and the fixing holes 5 are convex. The outer end of the fixing hole 5 is larger than the inner end. A limiting sleeve 8 is fixedly installed on the inner end side wall of the metal block 3. The diameter of the limiting sleeve 8 is smaller than the inner diameter of the prestressed pipe pile body 1. One end of the reinforcing rib 2 is inserted into the fixing hole 5 and then threadedly connected with the fastening bolt 12. The fastening bolt 12 is located on the inner side of the larger end of the fixing hole 5, and the reinforcing rib 2 is also located on the inner side wall of the metal block 3. In the fixing hole 5, the metal block 3 is fixed at the end of the prestressed pipe pile body 1, and the limiting sleeve 8 is inserted into the prestressed pipe pile body 1. The outer wall of the limiting sleeve 8 and the inner end side wall of the prestressed pipe pile body 1 are slidingly connected to fix the metal block 3. At the same time, the metal block 3 limits the anti-collapse metal sleeve 9 sleeved on the outside of the prestressed pipe pile body 1. The anti-collapse metal sleeve 9 strengthens the strength of the prestressed pipe pile body 1, avoids the collapse of the prestressed pipe pile body 1 due to stress concentration during construction, and thus ensures the bearing capacity and safety of the pile.

[0025] Before using prestressed pipe piles, it is necessary to conduct site surveys, measurements and markings, and determine safety measures and management systems for construction to ensure the safety and quality of construction. Then, dig pits at the construction site and sink the prestressed pipe piles into the soil. Pipe sinking can be done manually, mechanically or with water pressure. It is recommended to use mechanical equipment to sink pipes to improve construction efficiency and quality. Then, according to design requirements, prestressed steel bars are arranged inside and outside the pipe respectively, and tensioned and anchored through various prestressed construction equipment to form a prestressed state. Then, according to the design plan, after the prestressed steel bars are arranged, grouting is performed in the prestressed pipe body so that the grouting material fills the entire internal cavity of the pipe body, and the pipe mouth is sealed. Finally, after the completion of the prestressed pipe piles, quality acceptance is required, including strength testing, ultimate elongation testing of steel bars, and grouting quality inspection.

[0026] Several reinforcing structures are evenly fixedly installed on the outer walls of the two metal blocks 3. The reinforcing device includes a fixing block 6 and a reinforcing screw 10, and the fixing block 6 is provided with several blocks. A through hole 7 is opened on the side wall of the fixing block 6. The fixing block 6 is evenly fixedly installed on the outer wall of the metal block 3. A baffle 11 is fixedly installed on the side wall of one end of the reinforcing screw 10. The other end of the reinforcing screw 10 passes through the fixing blocks 6 on the two metal blocks 3 in turn and is threadedly connected with a nut. The length of the reinforcing screw 10 is less than the length between the rear ends of the two metal blocks 3.

[0027] When the prestressed pipe pile body 1 is vertically inserted into the pre-buried hole in the ground, the nuts on the multiple reinforcement devices are all facing upward, and the multiple nuts are exposed outside the ground. Then, the tensile stress generated by a single reinforcement device is adjusted accordingly according to the different directions of prestressed reinforcement as needed. During the specific operation, it is only necessary to use a wrench to drive the nut to rotate, and the nut will move toward the direction of the fixed block 6 through the pushing action of the thread. Because the nut is blocked outside the fixed block 6, and the baffle 11 is blocked outside the other metal block 3, as the nut continues to rotate, the reinforcing screw 10 will be pulled outward, so a clamping force is generated between the reinforcing screw 10 and the nut and the baffle 11, and the clamping force will directly act on the metal blocks 3 at both ends of the prestressed pipe pile body 1, so that tensile stress will be generated between the two metal blocks 3, and the tensile stress will prevent the prestressed pipe pile body 1 from cracking due to stress concentration during construction, thereby ensuring the bearing capacity and safety of the pipe pile.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength prestressed pipe pile, comprising: A prestressed pipe pile body (1), characterized in that: an anti-collapse metal sleeve (9) is sleeved on the outer side wall of the prestressed pipe pile body (1), metal blocks (3) are installed at both the front and rear ends of the prestressed pipe pile body (1) through fastening bolts (12), the anti-collapse metal sleeve (9) is located between the two metal blocks (3), and the outer wall of the anti-collapse metal sleeve (9) is flush with the outer wall of the metal block (3); A plurality of reinforcement structures are evenly and fixedly mounted on the outer walls of the two metal blocks (3).

2. A high-strength prestressed pipe pile according to claim 1, characterized in that: A reinforcing rib (2) is provided inside the prestressed pipe pile body (1), and two ends of the reinforcing rib (2) respectively pass through the front and rear ends of the prestressed pipe pile body (1).

3. The high-strength prestressed pipe pile according to claim 1, characterized in that: A plurality of steel bar insertion holes (4) and fixing holes (5) are evenly arranged on the side walls of the metal block (3), the steel bar insertion holes (4) and the fixing holes (5) are cross-arranged, the fixing holes (5) penetrate the front and rear end side walls of the metal block (3), and the fixing holes (5) are convex.

4. The high-strength prestressed pipe pile according to claim 2, characterized in that: A limiting sleeve (8) is fixedly installed on the inner end side wall of the metal block (3), one end of the reinforcing rib (2) is inserted into the fixing hole (5) and then threadedly connected to the fastening bolt (12), at which time the metal block (3) is fixed at the end of the prestressed pipe pile body (1), and the limiting sleeve (8) is inserted into the prestressed pipe pile body (1).

5. The high-strength prestressed pipe pile according to claim 1, characterized in that: The reinforcing structure comprises a fixing block (6) and a reinforcing screw rod (10), and the fixing block (6) is provided with a plurality of blocks, a through hole (7) is opened on the side wall of the fixing block (6), and the fixing block (6) is evenly fixedly installed on the outer wall of the metal block (3).

6. The high-strength prestressed pipe pile according to claim 5, characterized in that: A baffle (11) is fixedly mounted on the side wall of one end of the reinforcing screw rod (10), and the other end of the reinforcing screw rod (10) passes through the fixing blocks (6) on the two metal blocks (3) in sequence and is threadedly connected with a nut.

7. The high-strength prestressed pipe pile according to claim 5, characterized in that: The length of the reinforcing screw rod (10) is smaller than the length between the outer portions of the rear ends of the two metal blocks (3).

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