PRC precast pile head

Abstract

The utility model provides a PRC precast pile head which comprises a steel ring, a flange assembly, an adjusting assembly and a PRC pile body, and the steel ring is arranged outside the PRC pile body in a sleeved mode. The movable blind plate has the beneficial effects that the movable blind plate is provided with the bolt holes with the same diameter and the same number as the flange plate; the movable blind plate is not welded to the pile body any more, but is connected with the pile body through the connecting bolts. Besides, a plurality of adjusting blocks with different thicknesses are further designed between the movable blind plate and the top face of the pile body (namely the upper surface of the flange plate), the adjusting blocks with different thicknesses can be selected for adjustment according to the inclination condition of the top end face of the PRC pile after construction is completed, and then the end face of the whole pile is kept horizontal.

Description

Technical Field

[0001] The utility model belongs to the field of PRC pile head connection, in particular to a PRC prefabricated pile head. Background Art

[0002] At present, the steel ring on the end face of the PRC pile head is mostly connected to the pile body by welding a fixed blind plate, so that the pile body and the fixed blind plate form a whole. However, during the pile driving construction, due to the deviation of the verticality measured by the operator, the uneven distribution of the soil, the rotation of the pile body during penetration and other factors, the pile sinks into the soil in a non-vertical state with a deviation of about ≤0.5%. The most direct thing that can be seen at the top of the pile is that the fixed blind plate is not horizontal and has a certain inclination, while the bottom plates of the four legs of the angle steel tower are all horizontal. In this way, some of the bottom plates of the tower legs of the angle steel tower will appear suspended when connected to the pile fixed blind plate, or they will not be completely attached to the fixed blind plate. Utility Model Content

[0003] In view of this, the utility model aims to provide a PRC prefabricated pile head to solve at least one problem existing in the prior art.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A PRC prefabricated pile head comprises a steel ring, a flange assembly, an adjustment assembly and a PRC pile body, wherein the steel ring is sleeved on the outside of the PRC pile body, a boss and a plurality of fastening bolts are arranged at the bottom of the steel ring, a mounting platform is arranged at the top of the PRC pile body, a plurality of fastening holes are arranged on the surfaces of the boss and the mounting platform, the fastening holes are used to install the fastening bolts, the boss is connected to the mounting platform through the fastening bolts, the flange assembly is installed on the top of the steel ring, the adjustment assembly is installed on the top of the flange assembly, and the adjustment assembly is connected to the bottom plate of the external angle steel tower.

[0006] Furthermore, the flange assembly includes a flange plate, a plurality of connecting bolts and a plurality of ribs. The bottom of the flange plate is installed to the top of the steel ring. The top of the flange plate is connected to the adjustment assembly through connecting bolts. A plurality of flange bolt holes are opened circumferentially on the flange plate. A hand hole is also opened on the surface of the flange plate. A plurality of ribs are installed circumferentially on the surface of the flange plate.

[0007] Furthermore, the flange and the rib plate are connected by welding.

[0008] Furthermore, the adjustment assembly includes a movable blind plate and an adjustment block unit. The movable blind plate is circumferentially provided with a plurality of blind plate bolt holes. The blind plate bolt holes are used in conjunction with connecting bolts. The movable blind plate is connected to the flange through the connecting bolts, and an adjustment block unit is also installed between the movable blind plate and the flange.

[0009] Furthermore, the blind plate bolt holes of the movable blind plate and the flange bolt holes of the flange plate have the same inner diameter and the same number.

[0010] Furthermore, the adjustment block unit includes a plurality of adjustment blocks, a mounting hole is provided at the center of each adjustment block, and the plurality of adjustment blocks are equidistantly distributed on the flange.

[0011] Furthermore, the number of the adjustment blocks is no less than 6.

[0012] Furthermore, the material of the adjusting block is steel.

[0013] Furthermore, the thickness of the adjustment block is set to 3 mm, 6 mm or 9 mm.

[0014] Furthermore, the shape of the adjustment block is a strip structure or a fan-shaped structure.

[0015] Compared with the prior art, the PRC prefabricated pile head described in the utility model has the following advantages:

[0016] The utility model discloses a PRC prefabricated pile head, wherein the movable blind plate is provided with bolt holes of the same number as the diameter of the flange. The movable blind plate is no longer welded to the pile body, but connected to the pile body by connecting bolts. In addition, a plurality of adjustment blocks of different thicknesses are designed between the movable blind plate and the top surface of the pile body (i.e., the upper surface of the flange), and a plurality of adjustment blocks of different thicknesses can be selected for adjustment according to the inclination of the top surface of the pile after the construction of the PRC pile is completed, thereby keeping the entire pile end surface level. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection between the flange and the rib plate according to an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the movable blind plate described in an embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 1. Steel ring; 11. Boss; 12. Fastening bolts; 2. Flange; 21. Flange bolt hole; 22. Hand hole; 3. Connecting bolts; 4. Rib plate; 5. Movable blind plate; 51. Blind plate bolt hole; 6. Adjustment block unit; 7. PRC pile body; 71. Mounting table. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" 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 operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0025] 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 an indirect connection 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 by specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0027] Glossary:

[0028] PRC stands for Precast Reinforced Concrete piles. It is a pile prefabricated with reinforced concrete and installed in place by hoisting at the construction site.

[0029] like Figures 1 to 3As shown, a PRC prefabricated pile head includes a steel ring 1, a flange assembly, an adjustment assembly and a PRC pile body 7. The steel ring 1 is sleeved on the outside of the PRC pile body 7. A boss 11 and a plurality of fastening bolts 12 are provided at the bottom of the steel ring 1. A mounting platform 71 is provided at the top of the PRC pile body 7. A plurality of fastening holes are provided on the surfaces of the boss 11 and the mounting platform 71. The fastening holes are used to install the fastening bolts 12. The boss 11 is connected to the mounting platform 71 through the fastening bolts 12. A flange assembly is installed on the top of the steel ring 1. An adjustment assembly is installed on the top of the flange assembly. The adjustment assembly is connected to the bottom plate of the external angle steel tower.

[0030] The PRC prefabricated pile head adopts a flange and a rib plate, and the flange and the pile head steel ring are connected by welding. In actual use, because multiple PRC prefabricated piles need to be used at the bottom of the angle steel tower installation, in order to effectively connect with the bottom plate of the angle steel tower, a movable blind plate 5 is set on the pile head, and bolt holes with the same diameter and number as the flange are set on the movable blind plate 5. The movable blind plate 5 is no longer welded to the pile body, but connected to the pile body by bolts.

[0031] In a preferred embodiment of the utility model, the flange assembly includes a flange 2, a plurality of connecting bolts 3, and a plurality of ribs 4. The bottom of the flange 2 is mounted to the top of the steel ring 1. The top of the flange 2 is connected to the adjustment assembly through the connecting bolts 3. The flange 2 is provided with a plurality of flange bolt holes 21 in the circumference. The surface of the flange 2 is also provided with hand holes 22. A plurality of ribs 4 are installed in the circumference of the surface of the flange 2. The purpose of the hand holes 22 is to facilitate the installation of the connecting bolts 3 by the staff. The ribs 4 are designed to increase the connection strength between the flange 2 and the pile body. The welding and production of the flange 2 and the ribs 4 can be completed before the factory ships.

[0032] In a preferred embodiment of the utility model, the adjustment assembly includes a movable blind plate 5 and an adjustment block unit 6, the movable blind plate 5 is provided with a plurality of blind plate bolt holes 51 in the circumferential direction, the blind plate bolt holes 51 are used in conjunction with the connecting bolts 3, the movable blind plate 5 is connected to the flange 2 through the connecting bolts 3, and the adjustment block unit 6 is also installed between the movable blind plate 5 and the flange 2. In actual use, a plurality of adjustment blocks of different thicknesses are designed between the movable blind plate 5 and the top surface of the pile body (i.e., the upper surface of the flange 2), and a plurality of adjustment blocks of different thicknesses can be selected for adjustment according to the inclination of the top surface of the PRC pile after the construction is completed, thereby keeping the entire pile end surface level.

[0033] In a preferred embodiment of the utility model, the adjusting block unit 6 includes a plurality of adjusting blocks, each of which is provided with a mounting hole at the center, the mounting hole being used for the connecting bolt 3 to pass through, so that the adjusting block can be installed between the flange 2 and the movable blind plate 5, the plurality of adjusting blocks are equidistantly distributed on the flange 2, and the number of the adjusting blocks is not less than 6, the material of the adjusting block can be steel of the same material as the steel ring 1, the thickness of the adjusting block is set to 3mm, 6mm or 9mm, or other thicknesses, depending on the actual situation, the shape of the adjusting block can be a strip structure, a fan-shaped structure or other structures.

[0034] The utility model can solve the problem that the top surface of the PRC precast pile is tilted and not level due to the verticality deviation (≤0.5%) caused by the construction. It can solve the problem that the connection contact area between the angle steel tower bottom plate and the PRC precast pile does not meet the standard. It can solve the problem that the top surface elevations of the four pile foundations of the angle steel tower bottom plate are inconsistent after the PRC precast pile construction is completed. It can solve the problem that the PRC precast pile needs to be drilled on site after the pile sinking construction is completed. After on-site measurement, the movable blind plate can be drilled in the factory without drilling on site.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PRC prefabricated pile head, characterized in that: The invention comprises a steel ring (1), a flange assembly, an adjustment assembly and a PRC pile body (7). The steel ring (1) is sleeved on the outside of the PRC pile body (7). A boss (11) and a plurality of fastening bolts (12) are provided at the bottom of the steel ring (1). A mounting platform (71) is provided at the top of the PRC pile body (7). A plurality of fastening holes are provided on the surfaces of the boss (11) and the mounting platform (71). The fastening holes are used to install the fastening bolts (12). The boss (11) is connected to the mounting platform (71) via the fastening bolts (12). The flange assembly is installed on the top of the steel ring (1). The adjustment assembly is installed on the top of the flange assembly. The adjustment assembly is connected to the bottom plate of the external angle steel tower.

2. A PRC prefabricated pile head according to claim 1, characterized in that: The flange assembly comprises a flange (2), a plurality of connecting bolts (3) and a plurality of ribs (4); the bottom of the flange (2) is mounted to the top of the steel ring (1); the top of the flange (2) is connected to the adjustment assembly via the connecting bolts (3); a plurality of flange bolt holes (21) are circumferentially provided on the flange (2); a hand hole (22) is also provided on the surface of the flange (2); and a plurality of ribs (4) are circumferentially installed on the surface of the flange (2).

3. A PRC prefabricated pile head according to claim 2, characterized in that: The flange (2) and the rib plate (4) are connected by welding.

4. The PRC prefabricated pile head according to claim 2, characterized in that: The adjustment assembly comprises a movable blind plate (5) and an adjustment block unit (6); the movable blind plate (5) is provided with a plurality of blind plate bolt holes (51) in a circumferential direction; the blind plate bolt holes (51) are used in conjunction with connecting bolts (3); the movable blind plate (5) is connected to a flange (2) via the connecting bolts (3); and an adjustment block unit (6) is also installed between the movable blind plate (5) and the flange (2).

5. The PRC prefabricated pile head according to claim 4, characterized in that: The blind plate bolt holes (51) of the movable blind plate (5) and the flange bolt holes (21) of the flange plate (2) have the same inner diameter and the same number.

6. The PRC prefabricated pile head according to claim 4, characterized in that: The adjustment block unit (6) comprises a plurality of adjustment blocks, each of which has a mounting hole at its center, and the plurality of adjustment blocks are equidistantly distributed on the flange (2) in a circumferential manner.

7. The PRC prefabricated pile head according to claim 6, characterized in that: The number of the adjustment blocks is no less than 6.

8. The PRC prefabricated pile head according to claim 6, characterized in that: The material of the adjusting block is steel.

9. The PRC prefabricated pile head according to claim 6, characterized in that: The thickness of the adjusting block is set to 3mm, 6mm or 9mm.

10. The PRC prefabricated pile head according to claim 6, characterized in that: The shape of the regulating block is a strip structure or a fan structure.

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