Plug-in type prefabricated square pile and construction method thereof

Abstract

The invention discloses a plug-in type prefabricated square pile and a construction method thereof. The plug-in type prefabricated square pile comprises a plurality of pile sections which are coaxially arranged; the splicer comprises a male head and a female head, the female head is installed at the upper end of the pile section, the male head is installed at the lower end of the pile section, a socket hole allowing the male head of the previous pile section to be inserted is formed in the female head, and a plurality of lock holes formed in the circumferential direction of the socket hole at intervals are formed in the hole wall of the socket hole. A plurality of assembling holes are formed in the circumferential side face of the male head, locking blocks are elastically installed in the assembling holes, and one side of each locking block extends into one locking hole corresponding to the position of the female head of the next pile section. The problems that an existing threshold square pile adopts a welding connection mode, the construction time is long, and a welding seam is prone to damage and failure are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly relates to a plug-in precast square pile and a construction method thereof. Background Art

[0002] In the existing precast concrete square pile connection technology, the most common connection method for precast concrete square piles is mainly connection methods such as welding. The construction time of the welded connection node of the precast square pile is long, professional welders need to be equipped, and a long cooling time for the node weld is required. The weld of the precast square pile connection node is prone to damage and failure under the long-term erosion of the adverse underground water and soil environment, leaving serious quality hazards and unable to guarantee the quality of the overall structural foundation. Summary of the Invention

[0003] In order to overcome the defects existing in the prior art, the present invention provides a plug-in precast square pile and a construction method thereof to solve the problems that the existing threshold square piles using the welding connection method have a long construction time and the welds are prone to damage and failure.

[0004] To achieve the above object, a plug-in precast square pile is provided, including:

[0005] A plurality of pile sections, the plurality of pile sections being coaxially arranged;

[0006] A connector, including a male head and a female head. The female head is installed at the upper end of the pile section, the male head is installed at the lower end of the pile section. The female head is formed with a receiving hole for inserting the male head of the upper pile section. A plurality of locking holes are formed on the hole wall of the receiving hole at intervals along the circumferential direction of the receiving hole. A plurality of assembly holes are formed on the circumferential side surface of the male head. A locking block is elastically installed in the assembly hole, and one side of the locking block extends into one of the locking holes corresponding to the position of the female head of the lower pile section.

[0007] Further, the cross-section of the receiving hole is square, and the receiving hole is coaxially arranged with the pile section.

[0008] Further, the bottom of the locking block is formed with a guiding slope surface, and the guiding slope surface is inclined upward and outward.

[0009] Further, a guiding groove is formed on the hole wall of the assembly hole along the depth direction of the assembly hole. The locking block is formed with a guiding portion, and the guiding portion slides in the guiding groove.

[0010] Further, a receiving groove is formed at the bottom of the assembly hole, and a top support spring is installed in the receiving groove. The top support spring is connected to the other side of the locking block.

[0011] Further, the female head is provided with a through hole communicating with the receiving hole, and the position of the through hole corresponds to the position of the locking block.

[0012] Further, the socket is arranged at one end of the female head, and a sleeve is coaxially connected to the other end of the female head, and the sleeve covers the upper end of the pile section.

[0013] Further, a first anchor rod is connected to the other end of the female head, and the first anchor rod is embedded in the upper end of the pile section.

[0014] Further, a second anchor rod is connected to the male head, and the second anchor rod is embedded in the lower end of the pile section.

[0015] The present invention provides a construction method for a plug-in precast square pile, including the following steps:

[0016] a. Press a pile section into the soil;

[0017] b. Hoist another pile section, and align the male head at the lower end of the other pile section with the socket of the female head of the one pile section;

[0018] c. Insert the male head of the other pile section into the socket, and retract the locking block on the male head into the assembly hole. After the male head is inserted in place, one side of the locking block extends into the locking hole of the female head to lock the one pile section;

[0019] d. Repeat steps a to c, and press multiple pile sections into the soil one by one to form a plug-in precast square pile

[0020] The beneficial effect of the present invention is that after the plug-in precast square pile of the present invention is transported to the site, the pile sections are driven into the ground in sequence. The lower pile section is driven first, and the male head of the upper pile section is inserted into the socket of the female head of the lower pile section, and it is checked through the through hole whether the locking block extends into the locking hole of the female head. When the locking hole extends into the locking hole of the female head, the upper pile section is inserted in place, and thus multiple pile sections can be connected repeatedly according to the above connection method.

[0021] The plug-in precast square pile of the present invention can save welder costs, shorten the welding and cooling time of the connection nodes of the precast concrete square pile, and ensure the construction quality of the connection of the precast concrete square pile without being affected by the complex underground environment. Description of the Drawings

[0022] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects, and advantages of the present application will become more obvious:

[0023] Figure 1 It is a schematic structural diagram of the plug-in precast square pile according to an embodiment of the present invention.

[0024] Figures 2 to 4 It is a schematic diagram of the steps of the construction method of the plug-in precast square pile according to an embodiment of the present invention. Detailed implementation manners

[0025] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. In addition, it should be noted that for the sake of description, only the parts related to the invention are shown in the accompanying drawings.

[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0027] Referring to Figures 1 to 4 As shown, the present invention provides a plug-in precast square pile, including: a pile section 1 and a connector 2.

[0028] Among them, the number of pile sections 1 is multiple. The multiple pile sections 1 are coaxially arranged.

[0029] The connector 2 includes a male head 21 and a female head 22. Specifically, the female head 22 is installed at the upper end of the pile section 1, and the male head 21 is installed at the lower end of the pile section 1.

[0030] Among them, the female head 22 is formed with a receiving socket A. The receiving socket A is for inserting the male head 21 of the upper pile section 1. A plurality of locking holes C are formed on the hole wall of the receiving socket A. The plurality of locking holes C are arranged at intervals along the circumferential direction of the receiving socket A.

[0031] As Figure 1 shown, in this embodiment, the plurality of locking holes C communicate to form an annular groove, which reduces the assembly difficulty.

[0032] A plurality of assembly holes are formed on the circumferential side surface of the male head 21. A locking block 23 is elastically installed in the assembly hole. After the male head is inserted into the receiving socket of the female head of the lower pile section, one side of the locking block 23 extends into a locking hole C corresponding to the position of the female head 22 of the lower pile section 1.

[0033] As a preferred implementation manner, the cross-section of the receiving socket A is square. The receiving socket A is coaxially arranged with the pile section 1. The shape and size of the male head are adapted to the shape and size of the receiving socket.

[0034] In this embodiment, the locking block is strip-shaped. The locking block is arranged along the depth direction of the assembly hole. A guiding slope surface B is formed at the bottom of the locking block 23. The guiding slope surface B is inclined upward and outward.

[0035] Referring to Figures 2 to 4When the male head is inserted into the female socket, the guiding slope presses against the orifice of the female socket of the female head. Since the guiding slope is inclined, the locking block is pushed back into the assembly hole by the reverse force. When the male head is inserted in place, that is, when the locking block is aligned with the locking hole, since the force pressing against the guiding slope disappears, one side of the locking block pops out and inserts into the locking hole, thereby locking the upper pile section to the lower pile section.

[0036] As a preferred embodiment, a guiding groove is formed in the hole wall of the assembly hole. The guiding groove is arranged along the depth direction of the assembly hole. The locking block 23 is formed with a guiding portion. The guiding portion slides in the guiding groove.

[0037] In this embodiment, a receiving groove is formed at the bottom of the assembly hole. A top support spring 24 is installed in the receiving groove. The top support spring 24 is connected to the other side of the locking block 23. The top support spring is a spiral spring. The top support spring is arranged along the depth direction of the receiving groove.

[0038] Preferably, the cross-section of the receiving groove is circular. The outer diameter of the spiral spring is adapted to the inner diameter of the receiving groove.

[0039] In this embodiment, the female head 22 is provided with a through hole D communicating with the receiving socket A. The position of the through hole D corresponds to the position of the locking block 23.

[0040] The provision of the through hole can, on the one hand, observe the locking block of the locking hole through the through hole, and on the other hand, when it is necessary to remove the pile section, the locking block is pushed back into the assembly hole through the through hole, and then the male head and the female head of the two pile sections can be disassembled.

[0041] The receiving socket A is arranged at one end of the female head 22. The other end of the female head 22 is coaxially connected with a sleeve. The sleeve covers the upper end of the pile section 1. The other end of the female head 22 is connected with a first anchor rod. The first anchor rod is buried in the upper end of the pile section 1.

[0042] In this embodiment, one end of the male head is connected with a sleeve. The sleeve covers the lower end of the pile section. One end of the male head 21 is connected with a second anchor rod. The second anchor rod is buried in the lower end of the pile section 1.

[0043] The present invention provides a construction method for a plug-in precast square pile, including the following steps:

[0044] a. Press a pile section 1 into the soil.

[0045] b. Hoist another pile section 1 and align the male head 21 at the lower end of the other pile section 1 with the receiving socket A of the female head 22 of one pile section 1.

[0046] c. Insert the male head 21 of the other pile section 1 into the receiving socket A, and retract the locking block 23 on the male head 21 into the assembly hole. After the male head 21 is inserted in place, one side of the locking block 23 extends into the locking hole C of the female head 22 to lock one pile section 1.

[0047] In some embodiments, since the locking block is provided with a guiding slope surface, when the male head is inserted into the socket hole of the female head of the next pile section, the locking block automatically retracts into the assembly hole. When the male head is inserted in place, the locking block automatically rebounds under the supporting elastic force of the supporting spring and is inserted into the locking hole.

[0048] d. Repeat steps a to c to successively press multiple pile sections 1 into the soil to form a plug-in precast square pile.

[0049] After the plug-in precast square pile of the present invention is transported to the site, the pile sections are driven into the ground in sequence. The lower pile section is driven first, and the male head of the upper pile section is inserted into the socket hole of the female head of the lower pile section, and the locking block is checked through the through hole to see if it extends into the locking hole of the female head. When the locking block extends into the locking hole of the female head, the upper pile section is inserted in place, and multiple pile sections can be connected repeatedly according to the above connection method.

[0050] The plug-in precast square pile of the present invention can save welder costs, shorten the welding and cooling time of the connection nodes of precast concrete square piles, and ensure the construction quality of the connection of precast concrete square piles without being affected by the complex underground environment.

[0051] The above description is only the preferred embodiments of the present application and the description of the technical principles applied. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. A plug-in precast square pile, characterized in that, Comprising: A plurality of pile sections, which are coaxially arranged; A connector, including a male head and a female head. The female head is installed at the upper end of the pile section, and the male head is installed at the lower end of the pile section. The female head is formed with a receiving hole for inserting the male head of the upper pile section. A plurality of locking holes are formed on the hole wall of the receiving hole at intervals along the circumferential direction of the receiving hole. A plurality of assembly holes are formed on the circumferential side surface of the male head. A locking block is elastically installed in the assembly hole, and one side of the locking block extends into one of the locking holes corresponding to the position of the female head of the lower pile section.

2. The plug-in precast square pile according to claim 1, wherein, The cross-section of the receiving hole is square, and the receiving hole is coaxially arranged with the pile section.

3. The plug-in precast square pile according to claim 1, wherein A guiding slope is formed at the bottom of the locking block, and the guiding slope is inclined upward and outward.

4. The plug-in precast square pile according to claim 3, wherein, A guiding groove is formed on the hole wall of the assembly hole along the depth direction of the assembly hole. The locking block is formed with a guiding portion, and the guiding portion slides in the guiding groove.

5. The plug-in precast square pile according to claim 3, wherein, A receiving groove is formed at the bottom of the assembly hole, and a top-supporting spring is installed in the receiving groove. The top-supporting spring is connected to the other side of the locking block.

6. The plug-in precast square pile according to claim 1, characterized in that, The female head is provided with a through hole communicating with the receiving hole, and the position of the through hole corresponds to the position of the locking block.

7. The plug-in precast square pile according to claim 1, wherein, The receiving hole is arranged at one end of the female head, and a sleeve is coaxially connected to the other end of the female head. The sleeve covers the upper end of the pile section.

8. The plug-in precast square pile according to claim 7, wherein, A first anchor rod is connected to the other end of the female head, and the first anchor rod is buried in the upper end of the pile section.

9. The plug-in precast square pile according to claim 8, wherein, A second anchor rod is connected to the male head, and the second anchor rod is buried in the lower end of the pile section.

10. A construction method of the plug-in precast square pile according to any one of claims 1 to 9, characterized in that, Including the following steps: a. Press a pile section into the soil; b. Lift another pile section and align the male head at the lower end of the other pile section with the receiving hole of the female head of the one pile section; c. Insert the male head of the other pile section into the receiving hole, and retract the locking block on the male head into the assembly hole. After the male head is inserted in place, one side of the locking block extends into the locking hole of the female head to lock the one pile section; d. Repeat steps a to c to press a plurality of pile sections into the soil one by one to form a plug-in precast square pile.

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