Fabricated splicable geological disaster control micro pile

Abstract

The utility model relates to the technical field of micro piles, and discloses an assembly type splicable geological disaster control micro pile which comprises a pile body, a splicing mechanism is arranged in the pile body, a pile core is arranged in the center of the pile body, the splicing mechanism comprises a splicing groove, and positioning grooves are distributed in the periphery of the inner wall of the splicing groove. A cast-in-place layer is arranged at the bottom end of the positioning groove, the bottom of the cast-in-place layer communicates with a precast pile, and a steel frame edge is exposed out of the outer wall of the periphery of the precast pile. Through the cast-in-place layer and the splicing groove assembly structure, pouring materials are evenly diffused between butt joint gaps along with extrusion, the splicing process is completed, the overall assembling and splicing process is convenient and fast, assembling can be completed only through alignment, stability of the inner center of the structure is guaranteed through combination of multiple sets of precast pile structures, and after auxiliary solidification of the cast-in-place layer is matched, the splicing process is completed. And the connection firmness is enhanced, the support can be conveniently and quickly put into use in a governed regional environment, and the construction support requirement in the regional environment is quickly met.

Description

Technical Field

[0001] The utility model relates to the technical field of micropiles, and specifically relates to an assembled and splicable micropile for geological disaster control. Background Art

[0002] Geological disasters refer to geological processes or phenomena formed under the action of natural or human factors, which cause losses to human life and property and damage to the environment. In the prevention and control operations of geological disasters, through effective geological engineering technical means, the processes of these geological disasters are changed to achieve the purpose of preventing or reducing disasters. In the governance engineering operations, construction structures such as micropiles are widely used to reinforce slopes and foundation pits to resist lateral earth pressure and ensure the safety of engineering structures. Micropiles are high-strength, durable, small-diameter pile foundation elements, usually used in various engineering applications such as foundation reinforcement, soil stabilization, foundation pit support, and structural support. Their main advantages include the ability to construct in narrow and crowded areas, adapt to various soil types, and have less impact on the environment. Micropiles play their functions by improving the stability of the soil, increasing the anti-heave ability, enhancing the bearing capacity of the foundation and subgrade, and preventing uneven settlement of buildings.

[0003] A micropile is a small-diameter drilled pile. The pile body is mainly composed of pressure-grouted cement mortar or fine aggregate concrete and reinforcing materials. According to the force requirements, the reinforcing materials can be steel bars, steel bars, steel pipes, or profiled steels, etc. During construction, a drill hole with the designed diameter is drilled by a drill rig or a drill tower. To ensure the stability of the drill hole, the steel casing should be lowered to the designed depth. Then, the hole is cleaned and the reinforcing materials such as steel bars are placed. Finally, the construction is completed by pressure-grouting cement mortar or fine aggregate concrete.

[0004] There are obvious beneficial effects in the above-mentioned prior art, but there are still deficiencies:

[0005] In the above-mentioned prior art, although micropile groups can be constructed and installed in geological disaster prevention and control areas to improve the bearing capacity of the foundation and subgrade, in areas where geological disasters occur frequently, the overall process of constructing a micropile group is slow, and it takes a certain time after concrete pouring to maintain the stability of the pile body structure itself, which cannot meet the emergency prevention and control requirements of individual areas. For this reason, an assembled and splicable micropile for geological disaster control is proposed. Content of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the utility model provides an assembled and splicable micropile for geological disaster control. Through the splicing groove inside the first steel pipe frame and the precast pile sleeve nested combination, it forms an assembly process with the second steel pipe frame, and can quickly meet the construction support requirements in the regional environment.

[0007] To achieve the above object, the present utility model provides the following technical solutions: an assembled and spliceable micro-pile for geological disaster control, comprising a pile body, wherein a splicing mechanism is arranged inside the pile body, and a pile core is arranged at the center of the pile body. The splicing mechanism comprises a splicing groove, and positioning grooves are distributed around the inner wall of the splicing groove. A cast-in-place layer is arranged at the bottom end of the positioning groove, and a precast pile is communicated with the bottom of the cast-in-place layer. Steel frame edges are exposed on the outer walls around the precast pile, and butt joints are reserved at the bottom end and the top end of the precast pile.

[0008] Preferably, the positioning grooves are equidistantly arranged around the inner wall of the splicing groove, and the splicing groove is spliced and engaged with the inner wall of the positioning groove through the precast pile.

[0009] Preferably, the butt joints at the bottom end and the top end of the precast pile are of matching shapes, and the cast-in-place layer is distributed along the butt joint at the top end of the precast pile.

[0010] Preferably, the pile body comprises a first steel pipe frame, and a positioning frame is fixedly connected to the outer wall of the first steel pipe frame. A second steel pipe frame is arranged at the bottom end of the first steel pipe frame.

[0011] Preferably, the first steel pipe frame is spliced and combined with the second steel pipe frame through the splicing mechanism, and the positioning frames are equidistantly distributed around the outer walls of the first steel pipe frame and the second steel pipe frame.

[0012] Preferably, the pile core comprises a concrete layer, and a hollow steel frame is embedded in the concrete layer. A steel bar bundle is attached to the center of the hollow steel frame, and a reinforcement ring is connected to the periphery of the hollow steel frame.

[0013] Preferably, the reinforcement rings are arranged equidistantly from top to bottom around the hollow steel frame, and the hollow steel frame and the steel bar bundle are fixedly connected to the concrete layer.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] 1. In the use of the present utility model, through the assembly structure of the cast-in-place layer and the splicing groove, the pouring material can be evenly diffused into the butt joint gap with the extrusion, completing the splicing process. The overall assembly and splicing process is convenient, and only alignment is required to complete the assembly. The combination of multiple precast pile structures ensures the stability of the center inside the structure. With the assistance of the cast-in-place layer for solidification, the connection firmness is enhanced, facilitating rapid investment in support use in the governance area environment and quickly meeting the construction support requirements in the area environment.

[0016] 2. When assembling this micro-pile, the precast pile at the bottom end of the first steel pipe frame can be aligned with the splicing groove in the second steel pipe frame below, and then spliced and combined into one body. Subsequently, it can be driven into the pile hole again. It can be assembled and used at multiple ends according to actual use requirements, which is convenient for carrying, handling, and adjustment.

[0017] 3. The interior of the pile core uses a hollow steel frame as the skeleton, and four sets of steel bar bundles fitted in the center deepen the stability of the central structure and improve the supporting strength of the entire micropile. The reinforcement ring is welded and fixed along the outer wall of the hollow steel frame to further improve the stability of the overall hollow steel frame in the structure and reduce stress deformation.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the pile body of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the splicing mechanism of the utility model;

[0021] Figure 3 It is a schematic diagram of the internal structure of the splicing groove in the splicing mechanism of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the pile core of the utility model when viewed from above;

[0023] Figure 5 It is a schematic diagram of the partial three-dimensional structure of the hollow steel frame in the pile core of the utility model.

[0024] In the figure: 1. pile body; 101. first steel pipe frame; 102. positioning frame; 103. second steel pipe frame; 2. splicing mechanism; 201. splicing groove; 202. positioning groove; 203. cast-in-place layer; 204. precast pile; 205. steel frame edge; 206. butt joint; 3. pile core; 301. concrete layer; 302. hollow steel frame; 303. steel bar bundle; 304. reinforcement ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this technical field without creative work are within the scope of protection of the utility model.

[0026] See also Figures 1-4, a prefabricated and spliceable micro-pile for geological disaster control in this embodiment, includes a pile body 1. A splicing mechanism 2 is arranged inside the pile body 1, and a pile core 3 is arranged at the center of the pile body 1. The pile body 1 includes a first steel pipe frame 101, and a positioning frame 102 is fixedly connected to the outer wall of the first steel pipe frame 101. A second steel pipe frame 103 is arranged at the bottom end of the first steel pipe frame 101.

[0027] As Figures 1-3 shown, the micro-pile in this utility model is similar in structure to the existing micro-piles. The main improvement of this utility model lies in that through the splicing groove 201 inside the first steel pipe frame 101 and the nested combination of the precast pile 204, it is spliced with the second steel pipe frame 103 to form an assembly process, which can quickly meet the construction support requirements in the regional environment. The first steel pipe frame 101 and the steel bar bundle 303 in this utility model are both prior arts. When using this micro-pile, first place the second steel pipe frame 103 into the pile hole, so that the positioning frame 102 around the second steel pipe frame 103 is stably embedded in the inner wall of the pile hole. After driving, align the precast pile 204 at the bottom end of the first steel pipe frame 101 with the splicing groove 201 in the second steel pipe frame 103 below, and then splice and combine them into one body. Then drive it into the pile hole again. It can be assembled and used at multiple ends according to actual usage requirements, which is convenient for carrying and adjustment.

[0028] As Figures 2-3 shown, the splicing mechanism 2 includes a splicing groove 201, and positioning grooves 202 are distributed around the inner wall of the splicing groove 201. A cast-in-place layer 203 is arranged at the bottom end of the positioning groove 202, and a precast pile 204 is communicated with the bottom of the cast-in-place layer 203. The steel frame frame edges 205 are exposed on the outer wall around the precast pile 204, and docking seams 206 are reserved at the bottom end and the top end of the precast pile 204. When assembling this micro-pile, first pour concrete at the position of the cast-in-place layer 203 inside the splicing groove 201, and the concrete shall not exceed the range of the cast-in-place layer 203. Then align the docking seam 206 at the bottom end of the precast pile 204 and insert it into the splicing groove 201. During the process, the steel frame frame edges 205 embedded and exposed around the precast pile 204 are engaged and positioned with the positioning grooves 202 on the inner wall of the splicing groove 201. When the docking seam 206 at the bottom end of the precast pile 204 contacts the cast-in-place layer 203, it is squeezed, so that the pouring material evenly diffuses into the gap of the docking seam 206, completing the splicing process. The overall assembly and splicing process is convenient, and only alignment is required to complete the assembly. The combination of multiple precast pile 204 structures ensures the stability of the center inside the structure. With the assistance of the cast-in-place layer 203 for solidification, the connection firmness is strengthened, which is convenient for quickly putting it into use for support in the governance of the regional environment.

[0029] As Figures 4-5As shown, the pile core 3 includes a concrete layer 301, and a hollow steel frame 302 is embedded inside the concrete layer 301. A steel tendon bundle 303 is attached to the center of the hollow steel frame 302, and a reinforcing ring 304 is connected to the periphery of the hollow steel frame 302. The inside of this pile core 3 uses the hollow steel frame 302 as the skeleton, and cooperates with the four groups of steel tendon bundles 303 attached to the center to deepen the stability of the central structure and improve the support strength of the overall micropile. The reinforcing ring 304 is welded and fixed along the outer wall of the hollow steel frame 302 to further improve the stability of the overall hollow steel frame 302 within the structure and reduce the phenomenon of stress deformation.

[0030] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the technical field to which the present invention pertains, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. An assembled and splicable micro pile for geological disaster control, comprising a pile body (1), characterized in that: A splicing mechanism (2) is arranged inside the pile body (1), and a pile core (3) is arranged at the center of the pile body (1); the splicing mechanism (2) comprises a splicing groove (201), and positioning grooves (202) are distributed around the inner wall of the splicing groove (201); a cast-in-place layer (203) is arranged at the bottom end of the positioning groove (202), and the bottom of the cast-in-place layer (203) is connected to a precast pile (204); the outer walls around the precast pile (204) are exposed with steel frame edges (205), and the bottom and top of the precast pile (204) are reserved with a butt joint (206).

2. The assembled and spliced ​​geological disaster control micro pile according to claim 1 is characterized in that: The positioning grooves (202) are arranged at equal intervals along the inner wall of the splicing groove (201), and the splicing groove (201) is spliced ​​and engaged with the inner wall of the positioning groove (202) through prefabricated piles (204).

3. The assembled and spliced ​​geological disaster control micro pile according to claim 1 is characterized in that: The bottom and top joints (206) of the precast pile (204) match in shape, and the cast-in-place layer (203) is distributed along the top joints (206) of the precast pile (204).

4. The assembled and spliced ​​geological disaster control micro pile according to claim 1 is characterized in that: The pile body (1) comprises a first steel pipe frame (101), and a positioning frame (102) is fixedly connected to the outer wall of the first steel pipe frame (101), and a second steel pipe frame (103) is arranged at the bottom end of the first steel pipe frame (101).

5. The assembled and spliced ​​geological disaster control micro pile according to claim 4 is characterized in that: The first steel pipe rack (101) is spliced ​​and assembled with the second steel pipe rack (103) via a splicing mechanism (2), and the positioning racks (102) are evenly distributed along the outer walls of the first steel pipe rack (101) and the second steel pipe rack (103).

6. The assembled and spliced ​​geological disaster control micro pile according to claim 1 is characterized in that: The pile core (3) comprises a concrete layer (301), and a hollow steel frame (302) is embedded inside the concrete layer (301), a steel bar bundle (303) is attached to the center of the hollow steel frame (302), and reinforcement rings (304) are connected around the hollow steel frame (302).

7. The assembled and spliced ​​micro pile for geological disaster control according to claim 6 is characterized in that: The reinforcement rings (304) are arranged equidistantly from top to bottom along the periphery of the hollow steel frame (302), and the hollow steel frame (302) and the steel bar bundle (303) are fixedly connected to the concrete layer (301).

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