Connecting device suitable for PHC pipe pile

Abstract

The utility model relates to the technical field of pipe pile construction, and discloses a connecting device suitable for a PHC pipe pile, which comprises an annular end plate fixedly connected to the lower end of an upper pipe pile and the upper end of a lower pipe pile, an inner sleeve is arranged between the upper pipe pile and the lower pipe pile, the outer surface of the inner sleeve is fixedly connected with an extension plate along the circumferential direction, and the extension plate is fixedly connected with the outer end of the outer sleeve. The upper end of the inner sleeve extends into the upper pipe pile, the lower end of the inner sleeve extends into the lower pipe pile, the extension plate is attached to the end plate, and two semicircular hoops are connected to the outer side of the extension plate and the outer side of the end plate in a sleeving mode. The utility model solves the problems that the joint of the upper and lower sections of pipe piles is easy to crack or break and the connection is unreliable, is convenient for the butt joint of the pipe piles, and saves a large amount of time and manpower.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe pile construction, in particular to a connecting device suitable for PHC pipe piles. Background Art

[0002] At present, the welding pile connection method is widely used in the construction of prefabricated PHC pile foundations in civil engineering to meet the personalized needs of different pile lengths in different projects. In on-site operations, after the upper and lower sections of the PHC piles are aligned, they are fixed by spot welding at the end plates of the upper and lower sections of the PHC piles, and then a continuous welding is performed along the joints of the PHC pile end plates. The welding pile pulling method has good adaptability to axially compressed piles, but now the pile foundation is not only used for the situation of bearing axial loads, but also for the working conditions of horizontal loads such as retaining and anti-slip. Welding failure is prone to occur between two adjacent piles connected by welding, that is, the welding between the two piles is prone to cracks or fractures, resulting in an unreliable connection. At the same time, the welding connection operation at the construction site needs to wait for the weld to cool before pressing or driving the piles. This process consumes a lot of time and manpower. Utility Model Content

[0003] In order to solve the above problems of the prior art, the utility model provides a connection device suitable for PHC pipe piles, which solves the problems of cracks or breakages easily occurring at the connection between the upper and lower sections of the pipe piles and unreliable connection, and facilitates the connection of the pipe piles, saving a lot of time and manpower.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a connection device suitable for PHC pipe piles, comprising an annular end plate fixedly connected to the lower end of an upper pipe pile and the upper end of a lower pipe pile, an inner sleeve is arranged between the upper pipe pile and the lower pipe pile, an outer plate is fixedly connected to the outer surface of the inner sleeve along the circumferential direction, the upper end of the inner sleeve extends into the interior of the upper pipe pile, the lower end of the inner sleeve extends into the interior of the lower pipe pile, the outer plate is fitted with the end plate, and two semicircular hoops are sleeved on the outer sides of the outer plate and the end plate.

[0005] With the above structural design, the inner sleeve extends into the upper pipe pile and the lower pipe pile, which improves the integrity of the pipe pile and strengthens the bending and shear bearing capacity of the pipe pile connection. At the same time, the inner sleeve is arranged to facilitate the docking of the upper and lower pipe piles, and the installation efficiency is high.

[0006] Preferably, the semicircular ferrule is provided with a plurality of fixing holes equidistantly along the circumference, and the extension plate is provided with a plurality of threaded holes equidistantly along the circumference, the fixing holes correspond to the positions and numbers of the threaded holes, and fixing bolts pass through the fixing holes and the threaded holes to fix the two semicircular ferrules to the extension plate.

[0007] With the above structural design, the end plates of the upper pipe pile and the lower pipe pile are fastened by installing semicircular hoops, which increases the integrity of the connection, replaces traditional welding with mechanical connection, reduces the technical requirements of construction workers and reduces the labor intensity of workers.

[0008] Preferably, both ends of the semicircular ferrule are fixedly connected with wing plates, and connecting holes are opened on the wing plates. The connecting holes on the left and right semicircular ferrules correspond to each other and are connected by connecting bolts, and ear nuts are threadedly connected to the connecting bolts.

[0009] With the above structural design and the use of a clamp type connection, installation is more convenient than bolt connection.

[0010] Preferably, the outer diameters of the end plate and the extension plate are equal.

[0011] The above structural design makes it easy to install the semicircular hoop on the end plate and the extension plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The inner casing is extended into the upper and lower pipe piles, which improves the integrity of the pipe piles and strengthens the bending and shear bearing capacity of the pipe pile connection. At the same time, the inner casing is arranged to facilitate the docking of the upper and lower pipe piles, and the installation efficiency is high.

[0014] 2. The end plates of the upper and lower pipe piles are fastened by installing semicircular hoops, which increases the integrity of the connection. Mechanical connection replaces traditional welding, reduces the technical requirements of construction workers and reduces the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the first embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the connecting bolts of the second embodiment of the utility model. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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] See also Figure 1-4 The utility model provides a technical solution: a connection device suitable for PHC pipe piles, comprising an annular end plate 3 fixedly connected to the lower end of an upper pipe pile 1 and the upper end of a lower pipe pile 2, an inner sleeve 4 is arranged between the upper pipe pile 1 and the lower pipe pile 2, an outer plate 5 is fixedly connected to the outer surface of the inner sleeve 4 along the circumferential direction, the upper end of the inner sleeve 4 extends into the interior of the upper pipe pile 1, and the lower end of the inner sleeve 4 extends into the interior of the lower pipe pile 2, the outer plate 5 fits with the end plate 3, and two semicircular hoops 7 are sleeved on the outer side of the outer plate 5 and the end plate 3. The inner sleeve extends into the upper and lower pipe piles, improves the integrity of the pipe piles, strengthens the bending and shear bearing capacity of the pipe pile connection, and at the same time, the inner sleeve is arranged to facilitate the docking of the upper and lower pipe piles, and the installation efficiency is high. The outer diameters of the end plate 3 and the outer plate 5 are equal. It is convenient to install the semicircular hoops on the end plate and the outer plate.

[0021] Embodiment 1:

[0022] See also Figure 1 , Figure 2 The semicircular ferrule 7 is provided with a plurality of fixing holes 8 at equal intervals along the circumference, and the extension plate 5 is provided with a plurality of threaded holes 6 at equal intervals along the circumference, and the positions and numbers of the fixing holes 8 correspond to the threaded holes 6. The fixing bolts 14 pass through the fixing holes 8 and the threaded holes 6 to fix the two semicircular ferrules 7 on the extension plate 5. By installing the semicircular ferrule to fasten the end plates of the upper and lower pipe piles, the integrity of the connection is increased, and mechanical connection is used instead of traditional welding, which reduces the technical requirements of construction workers and reduces the labor intensity of workers.

[0023] Embodiment 2:

[0024] See also Figure 3 , Figure 4 The two ends of the semicircular ferrule 7 are fixedly connected with wing plates 10, and the wing plates 10 are provided with connection holes 11. The connection holes 11 on the left and right semicircular ferrules 7 correspond to each other and are connected by connection bolts 12, and ear nuts 13 are threadedly connected to the connection bolts 12. The clamp connection is more convenient to install than the bolt connection.

[0025] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. Although the present utility model is described in detail with reference to the above embodiments, it is still possible for the technical solutions recorded in the above embodiments to be modified, or some of the technical features therein to be replaced by equivalents, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A connection device suitable for PHC piles, characterized in that: The utility model comprises an annular end plate (3) fixedly connected to the lower end of an upper pipe pile (1) and the upper end of a lower pipe pile (2); an inner sleeve (4) is arranged between the upper pipe pile (1) and the lower pipe pile (2); an outer plate (5) is fixedly connected to the outer surface of the inner sleeve (4) along the circumferential direction; the upper end of the inner sleeve (4) extends into the interior of the upper pipe pile (1); the lower end of the inner sleeve (4) extends into the interior of the lower pipe pile (2); the outer plate (5) is fitted with the end plate (3); and two semicircular hoops (7) are sleeved on the outer sides of the outer plate (5) and the end plate (3).

2. A connection device suitable for PHC piles according to claim 1, characterized in that: The semicircular ferrule (7) is provided with a plurality of fixing holes (8) at equal intervals along the circumference, and the extension plate (5) is provided with a plurality of threaded holes (6) at equal intervals along the circumference, wherein the positions and numbers of the fixing holes (8) correspond to those of the threaded holes (6), and fixing bolts (14) pass through the fixing holes (8) and the threaded holes (6) to fix the two semicircular ferrules (7) on the extension plate (5).

3. A connection device suitable for PHC piles according to claim 1, characterized in that: The two ends of the semicircular ferrule (7) are fixedly connected with wing plates (10), and the wing plates (10) are provided with connecting holes (11). The connecting holes (11) on the left and right semicircular ferrules (7) correspond to each other and are connected by connecting bolts (12), and ear nuts (13) are threadedly connected to the connecting bolts (12).

4. A connection device suitable for PHC piles according to claim 1, characterized in that: The outer diameters of the end plate (3) and the extension plate (5) are equal.

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