Stress foundation hole pile hole opening protection method

Abstract

The invention discloses a protection method for a hole opening of a stressed foundation hole pile. The protection method comprises the steps that a cover plate covers a top hole opening of a precast pile; and the matching limiting column is used for being clamped and matched with a top hole opening of the precast pile, and the conical matching limiting column is installed at the bottom of the cover plate in a liftable mode. Due to the fact that the cover plate is clamped, matched and limited with the hole opening in the top of the precast pile by being matched with lifting of the limiting columns, the cover plate is not prone to shifting, and the stable protection effect on the hole opening in the top of the precast pile is achieved; the problem that when the cover plate is dumped with muck or treaded by people, the cover plate is prone to moving and cannot stably protect the hole opening of the hole pile exists.

Description

Technical Field

[0001] The invention relates to a method for protecting a hole opening of a stressed foundation pile, and belongs to the technical field of pile construction. Background Art

[0002] For soft foundation environments near the sea with deep silt layers, it is necessary to insert precast piles into the soft foundation to obtain force to the rock base, and the top opening of the precast pile is on the soft foundation. When pouring backfill soil into the soft foundation, the opening of the precast pile needs to be protected to prevent debris from pouring into the opening of the precast pile.

[0003] In the prior art, a cover plate is directly placed on the hole of the pile for protection of the hole opening (see Chinese Patent Publication No. CN220301392U). Since the cover plate is only placed on the hole opening at the top of the precast pile without any limit, the cover plate is easily moved when it is affected by dumped debris or stepped on by people, and cannot provide stable protection for the hole opening of the pile. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a method for protecting the opening of a pile hole in a stressed foundation.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a method for protecting a hole opening of a stressed foundation pile, comprising:

[0007] A cover plate covering the hole at the top of the precast pile;

[0008] The matching limit column is used for clamping and matching with the hole at the top of the precast pile. The conical matching limit column can be lifted and installed at the bottom of the cover plate.

[0009] It also includes a soft foundation and precast piles inserted into the soft foundation, wherein the tops of the precast piles are exposed on the soft foundation.

[0010] The cover plate is provided with a threaded through hole; the outer portion of the matching limit column is provided with an external thread which is screwed with the threaded through hole of the cover plate to realize lifting and lowering.

[0011] The bottom surface of the cover plate at the threaded through hole is provided with a concave hole to accommodate the matching limit column when it is raised; when the matching limit column is in the concave hole, the bottom of the matching limit column cannot be stuck with the top hole of the precast pile, and when the matching limit column descends from the concave hole, the matching limit column is stuck and matched with the top hole of the precast pile.

[0012] The top of the matching limiting column is provided with a rotation slot, and the rotation slot can only be slidably matched with a rotation card body, and the top of the rotation card body is flush with the top surface of the cover plate after being in the rotation slot.

[0013] The rotating card body is provided with a rotating force-bearing hole for the stick to be inserted into.

[0014] The beneficial effect of the present invention is that the cover plate is locked and limited with the top hole of the precast pile by cooperating with the limit column when it is lifted and lowered, so that the cover plate is not easily displaced and plays a role of stable protection for the top hole of the precast pile. This solves the problem that the cover plate of the prior art is only placed on the top hole of the precast pile without any limit, and the cover plate is easily moved when it is dumped by debris or stepped on by people, and cannot play a role of stable protection for the hole of the pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 is a schematic diagram of a cross section of a prefabricated pile of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the rotary card slot and the rotary card body of the present invention when assembled;

[0018] In the figure: 1-soft foundation; 11-backfill pile; 2-precast pile; 3-cover plate; 31-threaded through hole; 4-matching limit column; 32-concave hole; 41-rotation slot; 42-rotation card body; 43-rotation force hole. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0020] like Figures 1 to 3 shown.

[0021] A method for protecting a hole opening of a stressed foundation pile in the present application comprises:

[0022] The precast pile 2 is inserted into the soft foundation 1, and the bottom of the precast pile 2 is inserted into the hard rock base below the soft foundation 1 and stops. The top of the precast pile 2 is exposed on the soft foundation 1.

[0023] A backfill soil pile 11 is dumped onto the soft foundation 1 by a transport vehicle.

[0024] The top opening of the precast pile 2 is covered with a protective cover plate 3, and a conical matching limiting column 4 is installed at the bottom of the cover plate 3 in a liftable manner.

[0025] The cover plate 3 is provided with a threaded through hole 31; the outer surface of the matching limit column 4 is provided with an external thread that is screwed with the threaded through hole 31 of the cover plate 3 to achieve lifting and lowering. The bottom surface of the cover plate 3 at the threaded through hole 31 is provided with a concave hole 32 to accommodate the matching limit column 4 when it is lifted; when the matching limit column 4 is in the concave hole 32, the bottom of the matching limit column 4 cannot be stuck with the top hole of the precast pile 2. When the matching limit column 4 is lowered from the concave hole 32, the matching limit column 4 is stuck and matched with the top hole of the precast pile 2.

[0026] The top of the matching limit column 4 is provided with a rotation slot 41, and the rotation slot 41 can only be slidably matched with a rotation card body 42. After the rotation card body 42 is in the rotation slot 41, the top is flush with the top surface of the cover plate 3. The rotation card body 42 is provided with a rotation force hole 43 for the stick to be inserted. The rotation card body 42 is lifted up from the rotation slot 41 by a certain height through the rotation force hole 43. At this time, the rotation card body 42 is still in the rotation slot 41. The stick is inserted into the rotation force hole 43 to drive the rotation card body 42 to screw with the matching limit column 4 in the threaded through hole 31 of the cover plate 3 to achieve lifting.

[0027] Since the cover plate 3 is lifted and lowered in cooperation with the limit column 4 to lock and limit the top hole of the precast pile 2, the cover plate 3 is not easily displaced and plays a role of stabilizing and protecting the top hole of the precast pile 2, which solves the problem that the cover plate of the prior art is just placed on the top hole of the precast pile without any limit, and the cover plate is easily moved when it is dumped by debris or stepped on by people, and cannot play a role of stabilizing and protecting the hole of the pile.

Claims

1. A method for protecting the opening of a pile hole in a stressed foundation, characterized in that: include: A matching limiting column (4) can be lifted and lowered to engage with a hole at the top of the prefabricated pile (2).

2. The method for protecting the hole opening of a pile in a stressed foundation according to claim 1, characterized in that: It also includes a cover plate (3) covering the top opening of the prefabricated pile (2); The matching limiting column (4) is conical, and the conical matching limiting column (4) can be lifted and lowered and installed at the bottom of the cover plate (3).

3. The method for protecting the hole opening of a pile in a stressed foundation according to claim 2, characterized in that: It also comprises a soft foundation (1) and a prefabricated pile (2) inserted into the soft foundation (1), wherein the top of the prefabricated pile (2) is exposed on the soft foundation (1).

4. The method for protecting the hole opening of a pile in a stressed foundation according to claim 2, characterized in that: The cover plate (3) is provided with a threaded through hole (31); the matching limit column (4) is provided with an external thread on the outside thereof, which is screwed together with the threaded through hole (31) of the cover plate (3) to realize lifting and lowering.

5. The method for protecting the hole opening of a pile in a stressed foundation according to claim 4, characterized in that: The bottom surface of the cover plate (3) at the threaded through hole (31) is provided with a recessed hole (32) to accommodate the matching limiting column (4) when it is raised; when the matching limiting column (4) is in the recessed hole (32), the bottom of the matching limiting column (4) cannot be stuck with the top hole of the precast pile (2); when the matching limiting column (4) descends from the recessed hole (32), the matching limiting column (4) is stuck and matched with the top hole of the precast pile (2).

6. The method for protecting the hole opening of a pile in a stressed foundation according to claim 2, characterized in that: The top of the matching limiting column (4) is provided with a rotation slot (41), and the rotation slot (41) can only be slidably matched with a rotation card body (42), and the top of the rotation card body (42) is flush with the top surface of the cover plate (3) after being in the rotation slot (41).

7. The method for protecting the hole opening of a pile in a stressed foundation according to claim 6, characterized in that: The rotating card body (42) is provided with a rotating force-bearing hole (43) for inserting a stick.

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