Positioning device for prefabricated square pile

Abstract

The utility model relates to the field of pile foundation construction, and particularly discloses a prefabricated square pile positioning device which comprises a plurality of ring ribs, the ring ribs are in an incomplete ring shape, and the outer walls of the ring ribs can abut against the inner wall of a pile hole. The two ends of each connecting unit can penetrate through the hoisting holes of the square pile and then are connected with the ring ribs on the two sides of the square pile, and the two ends of each ring rib abut against the outer wall of the same side of the square pile. According to the scheme, the ring rib abuts against the inner wall of the pile hole, the square pile can be circumferentially positioned, and in the process, the supporting piece can further support and position the ring rib and the side wall of the square pile, so that the square pile is kept stably and vertically moving downwards, the error between the square pile and the pile hole in the perpendicularity direction can be obviously reduced, and the positioning precision of the square pile is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction, in particular to a positioning device for precast square piles. Background Art

[0002] The tools mainly used for pile foundation drilling include impact drills, rotary drills and rotary auger drills, and the holes formed are usually cylindrical. When a cylindrical hole is formed and matched with a square pile, since the diameter of the cylindrical hole is different from the side length of the square pile, it is easy to cause positioning deviation of the square pile during installation; this deviation will cause the square pile to be unable to accurately align with the pile hole during installation, thus affecting the stability and safety of the building.

[0003] The conventional solution is that during the installation of the square pile, fixing devices such as support frames or positioners can be added to improve the stability and positioning accuracy of the square pile. However, the support frames or positioners are generally installed at the top of the pile hole and are generally for the installation of cylindrical pile foundations. When the square pile is matched with the cylindrical pile hole, during the process of lowering the precast square pile, the top of the pile is positioned by the pile driver and the casing from the top of the pile hole, and the pile position accuracy meets the requirements. However, during the process of lowering the square pile, it is difficult to position the middle and lower parts of the square pile. Only by using the pile driver and the casing to drive the pile, due to the large length of the entire square pile, it is very easy to cause too large a verticality deviation between the square pile and the pile hole after the square pile is lowered, and it is easy to cause mutual interference between the square pile and each structure finally. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a positioning device for precast square piles to solve the problems that it is difficult to position the middle and bottom parts of the square pile during the square pile installation, and due to the large length of the entire square pile, it is very easy to cause too large a verticality deviation between the square pile and the pile hole after the square pile is lowered.

[0005] To achieve the above purpose, the basic scheme of the utility model is as follows: The positioning device for precast square piles includes:

[0006] A number of rings of reinforcement bars, the rings of reinforcement bars are in an incomplete circular shape, and the outer wall of the rings of reinforcement bars can be abutted against the inner wall of the pile hole;

[0007] A number of connecting units, both ends of the connecting units can pass through the lifting holes of the square pile and then be connected to the rings of reinforcement bars on both sides of the square pile, and both ends of a single ring of reinforcement bars are abutted against the outer wall of the same side of the square pile.

[0008] The technical principle of the present utility model is as follows: When installing the positioning device, the connecting unit presses the hoop reinforcement tightly against the hoisting hole of the square pile. At this time, several positioning devices can be installed according to the number distribution of the hoisting holes on the square pile. When installing the square pile, align the square pile with the pile hole, and several positioning devices and the square pile enter the pile hole. At this time, the hoop reinforcement abuts against the inner wall of the pile hole, which can perform circumferential positioning on the square pile. During this process, the support member can also support and position the side walls of the hoop reinforcement and the square pile, enabling the square pile to move vertically downward stably, significantly reducing the error in the verticality direction between the square pile and the pile hole, and improving the positioning accuracy of the square pile.

[0009] Furthermore, the connecting unit includes a support member and a connecting member that connects the support members on both sides of the square pile. The longitudinal cross-sectional profile of the support member is in the shape of "[", the upper end and the lower end of the support member abut against the inner wall of the square pile, and the side wall of the support member abuts against the inner walls of several hoop reinforcements.

[0010] Through the above settings, the support member in the shape of "[" can tightly support between the outer walls of the hoop reinforcement and the square pile, making the hoop reinforcement more stably distributed and installed on the outer wall of the square pile, thereby improving the abutting accuracy between the hoop reinforcement and the inner wall of the pile hole.

[0011] Furthermore, several grooves for the hoop reinforcement to be embedded are horizontally arranged on the outer wall of the support member away from the square pile.

[0012] Through the above settings, it is convenient for the hoop reinforcement to be stably embedded into the grooves of the support member. The grooves of the support member can limit the hoop reinforcement, making the abutting support between the hoop reinforcement and the support member more stable.

[0013] Furthermore, the longitudinal cross-sectional profile of the hoop reinforcement is in the shape of a keyway.

[0014] Through the above settings, the hoop reinforcement in the shape of a keyway can be more stably embedded into the grooves, increasing the fitting area between the hoop reinforcement and the inner wall of the grooves, and enhancing the stability of the installation of the hoop reinforcement and the support member.

[0015] Furthermore, the width of the groove is less than or equal to the width of the hoop reinforcement.

[0016] Through the above settings, the side of the support member in the shape of "[" away from the square pile does not protrude beyond the outer wall of the hoop reinforcement, enabling the hoop reinforcement to precisely abut against the inner wall of the pile hole, and the support member in the shape of "[" does not occupy extra space in the pile hole, improving the positioning accuracy of the square pile.

[0017] Furthermore, several grooves are uniformly arranged from top to bottom along the side wall of the support member.

[0018] Through the above settings, several hoop reinforcements can also support the support member and the square pile more evenly, improving the verticality of the lower end of the square pile.

[0019] Furthermore, the connecting member includes:

[0020] Connecting rod, threads are provided at both ends of the connecting rod, and the connecting rod can pass through the lifting hole of the square pile;

[0021] Nut, the nut can be threadedly connected to both ends of the connecting rod, and the nut can abut against the side wall of the support member or the hoop reinforcement away from the square pile.

[0022] Through the above settings, the connecting rod and the nut are cooperatively connected to the support members or hoop reinforcements on both sides of the square pile, so that the support members or hoop reinforcements on both sides of the square pile are stably fixed on the square pile.

[0023] Furthermore, an installation hole for the connecting rod to pass through is horizontally provided through the middle of the support member, and the installation hole can be directly aligned and coincided with the lifting hole of the square pile.

[0024] Through the above settings, after the support member is cooperated with the connecting rod and the nut, the support member can limit the hoop reinforcements located at a plurality of grooves synchronously at one time; at the same time, the middle part of the support member can evenly transfer the supporting force to each hoop reinforcement. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram in the isometric direction of the positioning device for precast square piles in the embodiment of the present invention.

[0026] Figure 2 It is a top view of the positioning device for precast square piles in the embodiment of the present invention.

[0027] In the above drawings: hoop reinforcement 10, support member 20, groove 201, connecting rod 30, nut 40, square pile 50, lifting hole 501. Detailed Embodiment

[0028] The technical solutions in the present invention will be further described below with reference to the drawings and embodiments.

[0029] This embodiment is basically as Figure 1 and Figure 2 shown. The embodiment of the present invention provides a positioning device for precast square piles. The positioning device for precast square piles 50 includes a plurality of hoop reinforcements 10 and a plurality of connection units. The hoop reinforcements 10 are in an incomplete ring shape, the central angle of the hoop reinforcements 10 is 90°, and both ends of a single hoop reinforcement 10 are vertical surfaces that fit against the same side wall of the square pile 50; the outer wall of the hoop reinforcement 10 can abut against the inner wall of the pile hole, and the longitudinal section profile of the hoop reinforcement 10 is in a keyway shape.

[0030] As Figure 1As shown in the figure, the connecting unit includes a support member 20 and a connecting member that supports the support member 20 on both sides of the square pile 50. The longitudinal section profile of the support member 20 is in the shape of "[", the upper end and the lower end of the support member 20 are in contact with the inner wall of the square pile 50, the side wall of the support member 20 is in contact with the inner wall of several rings of reinforcement bars 10, and several grooves 201 for the rings of reinforcement bars 10 to be embedded are horizontally arranged on the outer wall of the support member 20 away from the square pile 50. The width L1 of the groove 201 is less than or equal to the width L2 of the ring of reinforcement bars 10, and several grooves 201 are uniformly arranged along the side wall of the support member 20 from top to bottom.

[0031] As Figure 1 and 2 shown in the figure, the connecting member includes a connecting rod 30 and a nut 40. Threads are provided at both ends of the connecting rod 30. The connecting rod 30 can pass through the hoisting hole 501 of the square pile 50. An installation hole for the connecting rod 30 to pass through is horizontally penetrated through the middle part of the support member 20, and the installation hole can be directly opposite and coincide with the hoisting hole 501 of the square pile 50; the nut 40 can be threadedly connected to both ends of the connecting rod 30, and the nut 40 can be in contact with the side wall of the support member 20 away from the square pile 50.

[0032] In addition, the groove 201 of the support member 20 can be welded to the ring of reinforcement bars 10.

[0033] When the precast square pile positioning device in this embodiment is in use, before the square pile 50 is installed, the positioning device of the precast square pile is installed at the hoisting hole 501 of the square pile 50. The connecting rod 30 is passed through the hoisting hole 501 of the square pile 50, and the support member 20 is installed on the outer wall of the square pile 50, and the end of the connecting rod 30 is embedded in the installation hole of the support member 20. Then the support member 20 is adjusted to a vertical state, so that the vertical plane where the support members 20 on both sides of the square pile 50 are located is coplanar with the vertical plane where the axis of the square pile 50 is located. The upper and lower end faces of the support member 20 are in close contact with the outer wall of the square pile 50, and eight rings of reinforcement bars 10 are successively and tightly installed in the groove 201 of the support member 20, so that the support member 20 and the four rings of reinforcement bars 10 form an integral body that tightly presses against the outer wall of the square pile 50.

[0034] After the precast square pile positioning device is installed, the square pile 50 is aligned with the pile hole, and multiple positioning devices and the square pile 50 enter the pile hole. The eight rings of reinforcement bars 10 are in contact with the inner wall of the pile hole, which can perform circumferential positioning on the square pile 50. The eight rings of reinforcement bars 10 and the support member 20 support and position the side wall of the square pile 50, so that the square pile 50 can move vertically downward stably, and the error of the lower end of the square pile 50 in the verticality direction can be significantly reduced, and the positioning accuracy of the square pile 50 can be improved.

[0035] In the above process, the connection between the support member 20 and the hoop bar 10 is convenient for positioning, enabling the rapid installation and use of the precast square pile positioning device. At the same time, the connecting rod 30 and the nut 40 can position and fix the support members 20 and the hoop bars 10 on both sides of the square pile 50, so that the support members 20 and the hoop bars 10 are stably installed on the opposite sides of the square pile 50. When the square pile 50 descends, the support members 20 and the hoop bars 10 can continuously and stably provide positioning for the square pile 50.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A positioning device for prefabricated square piles, characterized in that: include: A plurality of ring reinforcements, wherein the ring reinforcements are in an incomplete ring shape, and the outer wall of the ring reinforcements can abut against the inner wall of the pile hole; A plurality of connection units, both ends of which can pass through the hoisting holes of the square pile and be connected with the ring reinforcements on both sides of the square pile, and both ends of a single ring reinforcement abut against the outer wall of the same side of the square pile.

2. The positioning device for prefabricated square piles according to claim 1, characterized in that: The connection unit includes a support member and a connection member connecting the support members on both sides of the square pile. The longitudinal section profile of the support member is in a "[" shape. The upper end and the lower end of the support member abut against the inner wall of the square pile, and the side wall of the support member abuts against the inner walls of several ring ribs.

3. The positioning device for prefabricated square piles according to claim 2, characterized in that: A plurality of grooves for the ring reinforcement to be embedded are horizontally arranged on the outer wall of the support member on one side away from the square pile.

4. The positioning device for prefabricated square piles according to claim 3, characterized in that: The longitudinal section profile of the ring rib is in a keyway shape.

5. The positioning device for prefabricated square piles according to claim 4, characterized in that: The width of the groove is less than or equal to the width of the rib.

6. The positioning device for prefabricated square piles according to claim 5, characterized in that: The plurality of grooves are evenly arranged along the side wall of the support member from top to bottom.

7. The positioning device for prefabricated square piles according to claim 6, characterized in that: The connecting piece comprises: A connecting rod, both ends of which are provided with threads, and the connecting rod can pass through the hoisting hole of the square pile; The nut can be threadedly connected to both ends of the connecting rod, and the nut can be abutted against the side wall of the support member or the ring reinforcement away from the square pile.

8. The positioning device for prefabricated square piles according to claim 7, characterized in that: A mounting hole for the connecting rod to pass through is horizontally provided at the middle of the support member, and the mounting hole can be directly aligned with the hoisting hole of the square pile.

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