Concrete pile butt joint structure

Abstract

The utility model relates to a concrete pile butt joint structure, which belongs to the technical field of building construction and comprises a reinforcement cage, the reinforcement cage is provided with a plurality of main reinforcements, the main reinforcements are arranged in a circumferential array, sleeves are mounted at two ends of the main reinforcements, end plates are sleeved on the outer sides of the sleeves, expansion blocks are mounted in the sleeves on one sides of the main reinforcements, and expansion sleeves are connected to the sleeves on the other sides of the main reinforcements; the expansion sleeve of the concrete pile can be matched with the expansion block in another component to connect the expansion sleeve and the expansion block; according to the concrete pile butt joint structure, the expansion sleeve of one concrete pile is aligned with the expansion block of the other member to be inserted in a butt joint mode, the expansion sleeve is expanded outwards through the expansion block, and the expansion sleeve and the concrete pile are connected together; welding and embedded steel bar anchoring are not needed, construction is simple, quality is reliable, butt joint position deformation or cracking caused by welding can be avoided, the butt joint strength is improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to a concrete pile butt joint structure and belongs to the technical field of building construction. Background Art

[0002] In current construction projects, prefabricated concrete piles are often used for on-site assembly to improve the construction efficiency and quality of the project. During the construction process, two prefabricated concrete piles and between concrete piles and caps need to be butt-jointed and installed.

[0003] The existing method of butt jointing concrete piles is mainly welding, which has many defects such as unstable welding quality, changes in heat-affected zone performance, residual stress, and susceptibility to corrosion, which causes deformation or cracking at the joint, seriously affecting the butt joint strength and service life of the concrete piles. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide a concrete pile butt joint structure, which does not require welding, can avoid deformation or cracking of the butt joint caused by welding, increase the butt joint strength, and extend the service life.

[0005] The concrete pile docking structure described in the utility model comprises a steel cage, which is provided with a plurality of main bars, each main bar is arranged in a circular array, sleeves are installed at both ends of the main bars, end plates are sleeved on the outer sides of the sleeves, an expansion block is installed in the sleeve on one side of the main bar, and the sleeve on the other side of the main bar is connected to an expansion sleeve; the expansion sleeve of the concrete pile can cooperate with the expansion block in another component to connect the two.

[0006] The technical solution of the utility model is to provide a concrete pile docking structure, wherein the expansion sleeve end of a concrete pile is aligned with the expansion block end of another component for docking and insertion, and the expansion sleeve is expanded outwards through the expansion block to connect the two together.

[0007] Preferably, both ends of the main reinforcement are provided with external threads, the sleeve is provided with internal threads, and the sleeve is connected to the main reinforcement through threads.

[0008] Preferably, the end plate is provided with a countersunk hole matching the outer contour of the sleeve, and the sleeve and the end plate are interference fit.

[0009] Preferably, one end of the expansion sleeve is provided with an external thread and is connected to the sleeve through the external thread, and the other end of the expansion sleeve is provided with a plurality of openings in a circumferential array to facilitate outward expansion during installation; the end of the expansion sleeve provided with the opening is also processed with a plurality of grooves to increase friction and improve connection strength.

[0010] Preferably, the expansion block is trumpet-shaped, and a spherical surface is provided on the top of the expansion block to reduce resistance during installation.

[0011] Preferably, the end plate comprises end plate A and end plate B, and end plate A is provided with a plurality of correction rods, and the steel cage is corrected by pulling the correction rods so that end plate A and end plate B are parallel; end plate B is provided with through holes for avoiding the correction rods.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The concrete pile docking structure described in the utility model connects the two together by aligning the expansion sleeve of one concrete pile with the expansion block of another component for docking and insertion, and causing the expansion sleeve to expand outwards through the expansion block. The utility model does not require welding and rebar anchoring, is simple to construct, has reliable quality, can avoid deformation or cracking of the docking position caused by welding, increases the docking strength, and prolongs the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 It is a three-dimensional picture of the sleeve;

[0017] Figure 4 is a stereogram of the expansion sleeve;

[0018] Figure 5 It is a stereogram of the expansion block;

[0019] Figure 6 is a three-dimensional view of end plate A;

[0020] Figure 7 It is a cross-sectional view of two concrete piles after being butt-jointed and installed.

[0021] In the figure: 1, steel cage; 11, main reinforcement; 2, end plate B; 21, through hole; 3, expansion sleeve; 31, opening; 32, groove; 4, end plate A; 41, correction rod; 42, countersunk hole; 5, sleeve; 51, internal thread; 6, expansion block; 61, spherical surface; 7, concrete. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with specific embodiments.

[0023] However, the description of the present invention is merely an embodiment of structural and even functional description, and the scope of rights of the present invention is not limited by the embodiments described in the text.

[0024] For example, multiple embodiments may have multiple changes and multiple forms, and it should be understood that the scope of rights of the present utility model includes equivalents that can realize the technical idea.

[0025] like Figures 1 to 7 As shown, this embodiment is implemented by the following technical scheme: it includes a steel cage 1, the steel cage 1 is provided with a plurality of main bars 11, each main bar 11 is arranged in a circular array, sleeves 5 are installed at both ends of the main bars 11, and end plates are sleeved on the outer side of the sleeve 5, an expansion block 6 is installed in the sleeve on one side of the main bar 11, and the sleeve on the other side of the main bar 11 is connected to the expansion sleeve 3; the expansion sleeve 3 of the concrete pile can cooperate with the expansion block 6 of another concrete pile to connect the two concrete piles.

[0026] In this embodiment, the main reinforcement 11 is provided with external threads at both ends, the sleeve 5 is provided with internal threads 51, and the sleeve 5 is connected to the main reinforcement 11 by threads. The end plate is provided with a countersunk hole 42 matching the outer contour of the sleeve 5, and the sleeve 5 and the end plate are interference fit. The expansion sleeve 3 is provided with an external thread at one end, and is connected to the sleeve 5 through the external thread. The other end of the expansion sleeve 3 is provided with a plurality of openings 31 in a circumferential array to facilitate outward expansion during installation; the end of the expansion sleeve 3 provided with the opening 31 is processed with a plurality of grooves 32 to increase friction and improve the connection strength. The expansion block 6 is trumpet-shaped, and a spherical surface 61 is provided on the top of the expansion block 6 to reduce the resistance during installation. The end plate includes an end plate A4 and an end plate B2. The end plate A4 is provided with a plurality of correction rods 41. The steel cage 1 is corrected by pulling the correction rods 41 so that the end plate A4 and the end plate B2 are parallel; the end plate B2 is provided with a through hole 21 for avoiding the correction rod 41.

[0027] The method of using the utility model is:

[0028] 1. After the utility model is assembled, pour concrete 7 to prefabricate into concrete piles;

[0029] 2. After fixing one concrete pile vertically, use a crane to lift another concrete pile so that its expansion sleeves 3 are aligned with the expansion blocks 6 of the fixed pile and inserted; during the insertion process, the expansion blocks 6 cause the expansion sleeves 3 to expand outward, thereby pressing the sleeve 5 to connect the two concrete piles together.

[0030] The two ends of the steel bars of the steel cage 1 of the utility model are clamped on the end plates through the sleeves 5, and the steel bars in the component are fixed by the end plates; the utility model can also form anchor bars by threading the two ends of the steel bars and connecting them with the reserved sleeves, without welding and anchoring, with simple construction and reliable quality.

[0031] This structure can also be used to connect the top of a concrete pile with a cap, and the top of a concrete column with beams and other components.

[0032] Of course, the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and any equivalent changes and improvements made by ordinary technicians in the technical field within the essential scope of the present invention shall fall within the scope of the patent coverage of the present invention.

Claims

1. A concrete pile docking structure, characterized in that: The invention comprises a steel bar cage (1), wherein the steel bar cage (1) is provided with a plurality of main bars (11), wherein the main bars (11) are arranged in a circular array, sleeves (5) are installed at both ends of the main bars (11), end plates are sleeved on the outer sides of the sleeves (5), an expansion block (6) is installed in the sleeve on one side of the main bars (11), and the sleeve on the other side of the main bars (11) is connected to an expansion sleeve (3).

2. The concrete pile docking structure according to claim 1, characterized in that: The two ends of the main reinforcement (11) are provided with external threads, the sleeve (5) is provided with internal threads (51), and the sleeve (5) and the main reinforcement (11) are connected by threads.

3. The concrete pile docking structure according to claim 1, characterized in that: The end plate is provided with a countersunk hole (42) matching the outer contour of the sleeve (5), and the sleeve (5) and the end plate are in interference fit.

4. The concrete pile docking structure according to claim 1, characterized in that: One end of the expansion sleeve (3) is provided with an external thread and connected to the sleeve (5) via the external thread. The other end of the expansion sleeve (3) is provided with a plurality of openings (31) in a circumferential array. The end of the expansion sleeve (3) provided with the opening is processed with a plurality of grooves (32) for increasing friction.

5. The concrete pile docking structure according to claim 1, characterized in that: The expansion block (6) is trumpet-shaped, and a spherical surface (61) is provided on the top of the expansion block (6) for reducing installation resistance.

6. The concrete pile docking structure according to claim 3, characterized in that: The end plate comprises an end plate A (4) and an end plate B (2). The end plate A (4) is provided with a plurality of correction rods (41) for correcting the steel cage; the end plate B (2) is provided with through holes (21) for avoiding the correction rods (41).

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