Flexible support side anchor anti-jointing joint point of precast pile foundation

Abstract

The utility model discloses a precast pile foundation flexible support side anchor anti-elongation joint which comprises a precast pile body, a pile end sleeve, an embedded part, an anti-elongation side anchor bottom plate and a side anchor stay cable, the top of the precast pile body is sleeved with the pile end sleeve, an annular top plate is arranged on the top of the pile end sleeve, the anti-elongation side anchor bottom plate is arranged on the annular top plate, and the side anchor stay cable is arranged on the side anchor bottom plate. A precast pile inner cavity is formed in the precast pile body, the embedded part is arranged in the precast pile inner cavity and connected with the anti-pulling side anchor bottom plate, a mounting seat is arranged on the anti-pulling side anchor bottom plate, the side anchor stay cable is arranged on the mounting seat, and concrete is poured in the precast pile inner cavity to form a concrete pile core. The embedded part comprises a pile core bottom supporting plate, pile core longitudinal bars and stirrups, and the pile core bottom supporting plate is arranged at the bottom of an inner cavity of the precast pile. The utility model relates to the technical field of pulling resistance of flexible supports, in particular to a prefabricated pile foundation flexible support side anchor anti-elongation joint which is better in pulling resistance, better in corrosion and rust resistance and higher in durability.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible support pull-out resistance, in particular to a prefabricated pile foundation flexible support side anchor pull-out resistance node. Background Art

[0002] In the existing flexible photovoltaic brackets with prefabricated pile foundations, the side anchor inclined cables (rods) are generally connected to the side anchor foundation by directly welding the cable bottom plate to the prefabricated pile end plate. Although this solution is convenient for construction, it is solely dependent on the quality of node welding, has low redundancy, does not consider multiple lines of defense, and has low reliability. It is well known that flexible photovoltaic brackets are open-air working environments. If the quality control of node welds is not strict and anti-rust measures are not in place, the welds will be slowly eroded by the long-term action of the welds in a humid environment, eventually leading to weld failure, weld peeling and detachment, and ultimately causing the side anchors to be directly pulled up, causing the side anchor system to fail, which in turn affects the overall bracket instability and collapse, resulting in large economic losses. This is unreasonable both in terms of the support structure stress and economic indicators, and needs to be improved. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a prefabricated pile foundation flexible bracket side anchor pull-out node with better pull-out resistance, better corrosion and rust resistance, and higher durability.

[0004] The technical solution adopted by the utility model is as follows: the utility model is a prefabricated pile foundation flexible bracket side anchor pull-out node, comprising a prefabricated pile body, a pile end sleeve, an embedded part, a pull-out side anchor bottom plate and a side anchor inclined cable, the top of the prefabricated pile body is sleeved with a pile end sleeve, the top of the pile end sleeve is provided with an annular top plate, the pull-out side anchor bottom plate is arranged on the annular top plate, the interior of the prefabricated pile body is provided with a prefabricated pile inner cavity, the embedded part is arranged in the prefabricated pile inner cavity and is connected to the pull-out side anchor bottom plate, and the pile end sleeve is sleeved with a pile end sleeve. The anchor base plate is connected, a mounting seat is provided on the anti-pullout side anchor base plate, the side anchor inclined cable is arranged on the mounting seat, concrete is poured in the inner cavity of the precast pile to form a concrete pile core, the embedded parts include a pile core bottom supporting plate, pile core longitudinal reinforcement and stirrups, the pile core bottom supporting plate is arranged at the bottom of the precast pile inner cavity, the pile core longitudinal reinforcement is arranged on the pile core bottom supporting plate, the pile core longitudinal reinforcement is provided with four groups, the stirrups are sleeved on the pile core longitudinal reinforcement, and the anti-pullout side anchor base plate is connected to the pile core longitudinal reinforcement.

[0005] Furthermore, longitudinal reinforcement holes are provided on the anti-pullout edge anchor bottom plate, the pile core longitudinal reinforcements are inserted into the longitudinal reinforcement holes, and the pile core longitudinal reinforcements are fixed in the longitudinal reinforcement holes by means of perforation plug welding.

[0006] Furthermore, the anti-pullout edge anchor bottom plate is provided with air holes and grouting holes for pouring concrete into the inner cavity of the precast pile.

[0007] Furthermore, the anti-pullout edge anchor bottom plate is fixed on the annular top plate by means of circumferential welding.

[0008] Furthermore, the lower end of the pile core longitudinal reinforcement is bent to form a connecting portion, and the connecting portion is fixed to the pile core bottom support plate by double-sided welding, and the length of the double-sided welding weld is greater than or equal to five times the diameter of the pile core longitudinal reinforcement.

[0009] Furthermore, the surfaces of the pile end sleeve and the anti-pullout side anchor bottom plate are both provided with a hot-dip galvanized layer.

[0010] Furthermore, the pile end sleeve, the anti-pullout side anchor base plate and the connection between them are thermally sprayed with a thermally sprayed zinc layer.

[0011] Furthermore, the pile end sleeve, the anti-pullout side anchor base plate and their connections are coated with composite waterproof material.

[0012] Furthermore, the composite waterproof material is asphalt glue.

[0013] Furthermore, the stirrups are provided in two groups.

[0014] The beneficial effects achieved by the utility model using the above structure are as follows: the present invention increases redundancy in the stress of the support structure, and provides reliability and safety at important nodes of the precast pile foundation flexible support; the present invention has multiple lines of defense in terms of corrosion and rust prevention, and improves the durability of the side anchor pull-out node by arranging a hot-dip galvanizing layer, a hot-sprayed zinc layer and a composite waterproof material, thereby extending the service life of the precast pile foundation flexible support; the present invention increases the service life of the precast pile foundation flexible support by improving the reliability and durability of the precast pile foundation flexible support, thereby reflecting the economy of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0017] Figure 2 for Figure 1 Sectional view along section AA;

[0018] Figure 3 for Figure 1 A cross-sectional view along section BB;

[0019] Figure 4 It is a schematic structural diagram of the pile end sleeve in an embodiment of the utility model.

[0020] Among them, 1. precast pile body, 2. pile end sleeve, 3. embedded parts, 4. anti-pullout side anchor base plate, 5. side anchor inclined cable, 6. concrete pile core, 7. precast pile inner cavity, 8. annular top plate, 9. pile core bottom support plate, 10. pile core longitudinal reinforcement, 11. stirrups, 12. mounting seat, 13. longitudinal reinforcement holes, 14. air holes, 15. grouting holes, 16. composite waterproof material. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] like Figure 1-Figure 4 As shown, the utility model is a prefabricated pile foundation flexible support side anchor pull-out node, comprising a prefabricated pile body 1, a pile end sleeve 2, an embedded part 3, a pull-out side anchor bottom plate 4 and a side anchor inclined cable 5. The top of the prefabricated pile body 1 is sleeved with a pile end sleeve 2, the top of the pile end sleeve 2 is provided with an annular top plate 8, the pull-out side anchor bottom plate 4 is arranged on the annular top plate 8, a prefabricated pile inner cavity 7 is provided inside the prefabricated pile body 1, the embedded part 3 is arranged in the prefabricated pile inner cavity 7 and is connected to the pull-out side anchor bottom plate 4, a mounting seat 12 is provided on the pull-out side anchor bottom plate 4, the side anchor inclined cable 5 is arranged on the mounting seat 12, concrete is poured in the prefabricated pile inner cavity 7 to form a concrete pile core 6; the pull-out side anchor bottom plate 4 is provided with air vents 14 and grouting holes 15 for pouring concrete into the prefabricated pile inner cavity 7; the pull-out side anchor bottom plate 4 is fixed to the annular top plate 8 by surrounding welding.

[0024] The embedded parts 3 include a pile core bottom support plate 9, pile core longitudinal reinforcements 10 and stirrups 11. The pile core bottom support plate 9 is arranged at the bottom of the prefabricated pile cavity 7, the pile core longitudinal reinforcements 10 are arranged on the pile core bottom support plate 9, four groups of pile core longitudinal reinforcements 10 are provided, and stirrups 11 are sleeved on the pile core longitudinal reinforcements 10. The anti-pulling side anchor bottom plate 4 is connected to the pile core longitudinal reinforcements 10; longitudinal reinforcement holes 13 are provided on the anti-pulling side anchor bottom plate 4, the pile core longitudinal reinforcements 10 are inserted into the longitudinal reinforcement holes 13, and the pile core longitudinal reinforcements 10 are fixed in the longitudinal reinforcement holes 13 by perforation plug welding; the lower end of the pile core longitudinal reinforcement 10 is bent to form a connecting portion, and the connecting portion is fixed to the pile core bottom support plate 9 by double-sided welding, and the length of the double-sided welding weld is greater than or equal to five times the diameter of the pile core longitudinal reinforcement 10; two groups of stirrups 11 are provided.

[0025] The surfaces of the pile end sleeve 2 and the anti-pullout side anchor base plate 4 are both provided with a hot-dip galvanized layer; the pile end sleeve 2, the anti-pullout side anchor base plate 4 and their connections are hot-sprayed with a hot-sprayed zinc layer; the pile end sleeve 2, the anti-pullout side anchor base plate 4 and their connections are coated with a composite waterproof material 16; the composite waterproof material 16 is asphalt glue.

[0026] When in use, the pile core longitudinal reinforcement 10 is fixed on the pile core bottom support plate 9 by double-sided welding through the connection part at the lower end of the pile core longitudinal reinforcement 10. The length of the double-sided welding weld should be greater than or equal to five times the diameter of the pile core longitudinal reinforcement 10. The upper end of the pile core longitudinal reinforcement 10 is inserted into the longitudinal reinforcement hole 13, and the upper end of the pile core longitudinal reinforcement 10 is connected to the anti-pullout side anchor bottom plate 4 through the longitudinal reinforcement hole 13 to form an integral component by perforation plug welding. Two stirrups 11 are arranged on the pile core longitudinal reinforcement 10 for reinforcement; then the prepared embedded part 3 is placed in the prefabricated pile cavity 7, and after adjusting and positioning the position of the anti-pullout side anchor bottom plate 4, the anti-pullout side anchor bottom plate 4 and the annular top plate 8 are welded around, and the weld height of the surrounding welding should meet the ultimate bearing capacity requirement of 1.2 times of the side anchor inclined cable 5, meet the strong node concept design requirements, and even if the side anchor inclined cable 5 is broken, this weld node is still in an elastic state; Then, concrete is poured into the precast pile cavity 7 through the grouting hole 15 and cured until the concrete reaches the designed strength to form a concrete pile core 6. The friction force provided by the concrete pile core 6 and the inner wall of the precast pile cavity 7 is used to provide the pull-out bearing capacity of the side anchor alone. This pull-out bearing capacity meets the 1.2 times ultimate bearing capacity requirement of the side anchor inclined cable 5. Even if the weld of the pull-out side anchor bottom plate 4 fails completely, the pile core longitudinal reinforcement 10 can meet the pull-out requirement; then, a hot-spraying zinc layer is sprayed on the pile end sleeve 2, the pull-out side anchor bottom plate 4 and the connection thereof for rust and corrosion prevention. At the same time, because the surfaces of the pile end sleeve 2 and the pull-out side anchor bottom plate 4 are both provided with a hot-dip galvanized layer, the rust and corrosion resistance of the side anchor pull-out node is better; finally, the pile end sleeve 2 and the pull-out side anchor bottom plate 4 are coated three times with a composite waterproof material 16 to achieve the purpose of isolating water and air.

[0027] In summary, the present invention increases redundancy in the stress of the support structure, and provides reliability and safety at important nodes of the precast pile foundation flexible support; the present invention has multiple lines of defense in terms of corrosion and rust prevention, and improves the durability of the side anchor pull-out node by arranging a hot-dip galvanizing layer, a hot-sprayed zinc layer and a composite waterproof material 16, thereby extending the service life of the precast pile foundation flexible support; the present invention increases the service life of the precast pile foundation flexible support by improving the reliability and durability of the precast pile foundation flexible support, reflecting the economy of the present invention.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A prefabricated pile foundation flexible support side anchor pull-out node, comprising a prefabricated pile body (1), a pile end sleeve (2), an embedded part (3), a pull-out side anchor base plate (4) and a side anchor inclined cable (5), characterized in that: The top of the precast pile body (1) is sleeved with a pile end sleeve (2), the top of the pile end sleeve (2) is provided with an annular top plate (8), the anti-pulling side anchor bottom plate (4) is arranged on the annular top plate (8), the precast pile body (1) is provided with a precast pile inner cavity (7), the embedded part (3) is arranged in the precast pile inner cavity (7) and connected to the anti-pulling side anchor bottom plate (4), the anti-pulling side anchor bottom plate (4) is provided with a mounting seat (12), the side anchor inclined cable (5) is arranged on the mounting seat (12), and the Concrete is poured into the inner cavity (7) of the precast pile to form a concrete pile core (6); the embedded part (3) comprises a pile core bottom support plate (9), pile core longitudinal reinforcement (10) and stirrups (11); the pile core bottom support plate (9) is arranged at the bottom of the inner cavity (7) of the precast pile; the pile core longitudinal reinforcement (10) is arranged on the pile core bottom support plate (9); four groups of the pile core longitudinal reinforcement (10) are arranged; the stirrups (11) are sleeved on the pile core longitudinal reinforcement (10); and the anti-pulling edge anchor bottom plate (4) is connected to the pile core longitudinal reinforcement (10).

2. The prefabricated pile foundation flexible bracket side anchor pull-out node according to claim 1, characterized in that: The anti-pulling edge anchor bottom plate (4) is provided with a longitudinal reinforcement hole (13), the pile core longitudinal reinforcement (10) is inserted into the longitudinal reinforcement hole (13), and the pile core longitudinal reinforcement (10) is fixed in the longitudinal reinforcement hole (13) by means of perforation plug welding.

3. The prefabricated pile foundation flexible bracket side anchor pull-out node according to claim 1, characterized in that: The anti-pulling edge anchor bottom plate (4) is provided with air holes (14) and grouting holes (15) for pouring concrete into the inner cavity (7) of the precast pile.

4. The prefabricated pile foundation flexible support side anchor pull-out node according to claim 1, characterized in that: The anti-pulling edge anchor bottom plate (4) is fixed on the annular top plate (8) by means of circumferential welding.

5. The prefabricated pile foundation flexible support side anchor pull-out node according to claim 1, characterized in that: The lower end of the pile core longitudinal reinforcement (10) is bent to form a connection portion, and the connection portion is fixed to the pile core bottom support plate (9) by double-sided welding, and the length of the double-sided welding weld is greater than or equal to five times the diameter of the pile core longitudinal reinforcement (10).

6. The prefabricated pile foundation flexible support side anchor pull-out node according to claim 1, characterized in that: The surfaces of the pile end sleeve (2) and the anti-pulling side anchor bottom plate (4) are both provided with a hot-dip galvanized layer.

7. The prefabricated pile foundation flexible bracket side anchor pull-out node according to claim 1, characterized in that: The pile end sleeve (2), the anti-pulling side anchor base plate (4) and the connection between them are thermally sprayed with a thermally sprayed zinc layer.

8. The prefabricated pile foundation flexible support side anchor pull-out node according to claim 1, characterized in that: The pile end sleeve (2), the anti-pulling side anchor base plate (4) and the connection points thereof are coated with a composite waterproof material (16).

9. The prefabricated pile foundation flexible support side anchor pull-out node according to claim 8, characterized in that: The composite waterproof material (16) is asphalt glue.

10. The prefabricated pile foundation flexible support side anchor pull-out node according to claim 1, characterized in that: The stirrups (11) are provided in two groups.

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