Precast concrete special-shaped support pile

Abstract

The utility model relates to a prefabricated concrete special-shaped support pile which comprises a concrete pile body, and a steel reinforcement framework is arranged in the concrete pile body in advance. The cross section of the concrete pile body is a rectangle with grooves in the two sides, and the grooves are symmetrically formed in the two long edges of the concrete pile body. The steel reinforcement framework comprises a plurality of vertical steel reinforcements and a plurality of transverse stirrups, the vertical steel reinforcements comprise vertical prestressed steel reinforcements and bent stressed steel reinforcements, and the bent stressed steel reinforcements are uniformly distributed on the peripheral side of the groove. The grooves are symmetrically formed in the two long edges of the concrete pile body, so that the contact area between the concrete pile body and a foundation pit is increased. Compared with a traditional rectangular supporting pile, the supporting face is enlarged, the multiple evenly-distributed bent load-bearing steel bars are arranged on the peripheral side of the groove, the good mechanical property of the pile body is kept, meanwhile, the bearing force of the side portion of the supporting pile is increased, and the overall structural strength of the supporting pile is enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of support pile technology, and in particular relates to a precast concrete irregular support pile. Background Technology

[0002] Precast concrete piles are slender precast concrete components made using prestressing and centrifugal molding methods. Currently, these precast concrete piles are widely used in foundation pit support engineering and slope stabilization engineering. However, the performance requirements for support piles in foundation pit or river channel support engineering are constantly increasing, with higher requirements for bending and shear resistance. Based on the stress analysis of foundation pit support engineering, the cross-sectional structure of the support piles has been optimized.

[0003] However, the existing optimized support piles in the support engineering still do not have a sufficiently large bending and shear resistance surface, and the durability of the piles is poor, which cannot meet the actual use requirements of the project. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a precast concrete irregular support pile, which increases the bending and shear resistance surface of the support pile, meets the needs of support engineering, and has better pile durability.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A precast concrete irregular support pile includes a concrete pile body, wherein a steel reinforcement skeleton is pre-installed inside the concrete pile body.

[0007] The cross-section of the concrete pile is a rectangle with grooves on both sides, and the grooves are symmetrically opened on the two long sides of the concrete pile.

[0008] The steel reinforcement cage includes several vertical steel bars and several horizontal stirrups, wherein the vertical steel bars include vertical prestressed steel bars and bent reinforcing bars, and the bent reinforcing bars are evenly distributed on the periphery of the groove.

[0009] In a preferred embodiment of the present invention, the groove includes a symmetrical first side and a second side, and the included angle between the first side and the second side is an obtuse angle.

[0010] In a preferred embodiment of the present invention, the groove includes an inwardly concave arc edge, the diameter of which coincides with one long side of the concrete pile, and the diameter of the arc edge is smaller than the long side of the concrete pile.

[0011] In a preferred embodiment of this utility model, the groove includes a symmetrical first side and a second side, both of which are rounded.

[0012] In a preferred embodiment of this utility model, the transverse stirrups are configured as an integral ring stirrups, and the vertical reinforcing bars are evenly distributed at intervals along the inner side of the integral ring stirrups.

[0013] Beneficial effects: This utility model discloses a precast concrete irregular-shaped support pile, in which grooves are symmetrically opened on the two long sides of the concrete pile body to increase its contact surface with the foundation pit. Compared with traditional rectangular support piles, the support surface is increased. Multiple evenly distributed bent reinforcing bars are arranged around the grooves to maintain the good mechanical properties of the pile body, while increasing the bearing capacity of the side of the support pile and enhancing the overall structural strength of the support pile.

[0014] This invention employs a mixed reinforcement design of vertical prestressed steel bars and bent reinforcing bars, which effectively improves the bending and shear resistance of the concrete pile. Furthermore, the addition of grooves increases the bending and shear resistance surface of the support pile, meeting the needs of support engineering and resulting in better pile durability. Attached Figure Description

[0015] Figure 1 A structural schematic diagram of a precast concrete irregular support pile (Example 1) provided by this utility model;

[0016] Figure 2 A schematic diagram of the cross-sectional structure of a precast concrete irregular support pile provided for this utility model;

[0017] Figure 3 A schematic diagram of the cross-sectional structure of a precast concrete irregular support pile (Example 1) provided by this utility model;

[0018] Figure 4 A structural schematic diagram of a precast concrete irregular support pile (Example 2) provided by this utility model;

[0019] Figure 5 A schematic diagram of the cross-sectional structure of a precast concrete irregular support pile (Example 2) provided by this utility model;

[0020] Figure 6 A structural schematic diagram of a precast concrete irregular support pile (Example 3) provided by this utility model;

[0021] Figure 7 A schematic diagram of the cross-sectional structure of a precast concrete irregular support pile (Example 3) provided by this utility model;

[0022] Figure 8 A partial sectional view of a precast concrete irregular support pile provided for this utility model;

[0023] Figure 9 This utility model provides a schematic diagram of the installation structure of a precast concrete irregular support pile.

[0024] In the diagram: 1. Concrete pile;

[0025] 2 grooves, 21 first side, 22 second side;

[0026] 3. Vertical reinforcement, 31. Vertical prestressed reinforcement, 32. Bending reinforcement;

[0027] 4. Horizontal stirrups. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1:

[0030] like Figure 1-3 As shown, this utility model provides a precast concrete irregular support pile, including a concrete pile body 1, which has a pre-set steel reinforcement skeleton inside the concrete pile body 1.

[0031] The cross-section of the concrete pile 1 is a rectangle with grooves 2 on both sides, and the ratio of its long side to short side is 4:3. The grooves 2 are symmetrically opened on the two long sides of the concrete pile 1. The grooves 2 increase the contact surface with the foundation pit, resulting in strong resistance to support and superior mechanical properties.

[0032] The groove 2 includes a symmetrical first side 21 and a second side 22. The included angle between the first side 21 and the second side 22 is an obtuse angle, which increases the connection strength between the sides of the groove 2 and facilitates mold demolding.

[0033] Example 2:

[0034] The other parts are the same as in Embodiment 1, such as Figure 4-5 As shown, in addition to the groove 2 including the concave arc edge, the diameter of the arc edge coincides with one of the long sides of the concrete pile 1, and the diameter of the arc edge is smaller than the long side of the concrete pile 1. The groove 2 is set with an arc edge, which has better toughness.

[0035] Example 3:

[0036] The other parts are the same as in Embodiment 1, such as Figure 6-7 As shown, the groove 2 includes a symmetrical first side 21 and a second side 22, both of which are rounded.

[0037] Based on the above embodiment, the reinforcing steel cage includes several vertical reinforcing bars 3 and several horizontal stirrups 4, wherein the vertical reinforcing bars 3 include vertical prestressed reinforcing bars 31 and bent reinforcing bars 32, such as... Figure 8 As shown, the bending reinforcing steel bar 32 is evenly distributed around the periphery of the groove 2, which can effectively improve the stiffness of the support pile and increase its durability.

[0038] Construction method:

[0039] First, the irregularly shaped support pile is vertically and stably lifted, then inserted into the pile position for leveling, verticality adjustment, and pile driving. During construction, the horizontal and vertical alignment of the irregularly shaped support pile is adjusted continuously until the standard requirements are met, at which point the pile is driven into place. The piles are then driven one by one in parallel. Figure 9 As shown, this forms a pile wall effect, improving the stability of the support system.

[0040] Based on the above embodiment, the transverse stirrup 4 is set as an integral ring stirrup, which is formed by bending. The vertical steel bars 3 are evenly distributed along the inner side of the integral ring stirrup. Among them, the bent stress steel bars 32 are evenly distributed on the periphery of the groove 2, and the vertical prestressed steel bars 31 are distributed in the part other than the periphery of the groove 2.

[0041] This utility model provides symmetrical grooves 2 on the two long sides of the concrete pile body 1, and a number of bent reinforcing bars 32 are evenly distributed around the grooves 2 to enhance the bearing capacity of the side of the concrete pile body 1. At the same time, it reduces the amount of concrete used while meeting the structural strength requirements of the pile body.

[0042] In summary:

[0043] This invention, by incorporating grooves, increases the support surface compared to traditional rectangular retaining piles. Multiple evenly distributed bent reinforcing bars are arranged around the grooves, maintaining good mechanical properties of the pile while increasing the bearing capacity of the pile's sides, thus enhancing the overall structural strength. A mixed reinforcement design of vertical prestressed steel bars and bent reinforcing bars is employed. This effectively improves the bending and shear resistance of the concrete pile. Furthermore, the grooves increase the bending and shear resistance surface of the retaining pile, meeting the needs of support engineering and resulting in better pile durability.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The terms "front," "back," "left," and "right" used in the text are not specific and are mainly for more intuitive illustration of the technical solution, and do not constitute a limitation. Those skilled in the art should understand that the above embodiments are only for illustrating the technical concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made according to the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A precast concrete irregular-shaped support pile, characterized in that: It includes a concrete pile body (1), and the concrete pile body (1) has a pre-set steel reinforcement cage; The cross-section of the concrete pile (1) is a rectangle with grooves (2) on both sides, and the grooves (2) are symmetrically opened on the two long sides of the concrete pile (1). The steel reinforcement cage includes several vertical steel bars (3) and several horizontal stirrups (4), wherein the vertical steel bars (3) include vertical prestressed steel bars (31) and bent reinforcing bars (32), and the bent reinforcing bars (32) are evenly distributed on the periphery of the groove (2).

2. The precast concrete irregular-shaped support pile according to claim 1, characterized in that: The groove (2) includes a symmetrical first side (21) and a second side (22), and the included angle between the first side (21) and the second side (22) is an obtuse angle.

3. The precast concrete irregular-shaped support pile according to claim 1, characterized in that: The groove (2) includes an inwardly concave arc edge, the diameter of which coincides with one long side of the concrete pile (1), and the diameter of the arc edge is smaller than the long side of the concrete pile (1).

4. A precast concrete irregular-shaped support pile according to claim 1, characterized in that: The groove (2) includes a symmetrical first side (21) and a second side (22), both of which are rounded.

5. A precast concrete irregular-shaped support pile according to claim 1, characterized in that: The transverse stirrups (4) are set as an integral ring stirrups, and the vertical reinforcing bars (3) are evenly distributed at intervals along the inner side of the integral ring stirrups.

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