Anchor rod static pressure steel pipe pile with high bearing capacity

Abstract

The utility model discloses a high-bearing-capacity anchor rod static pressure steel pipe pile which comprises an anchor rod static pressure steel pipe pile body, a pile body boundary is arranged on the periphery of the anchor rod static pressure steel pipe pile body, the anchor rod static pressure steel pipe pile body is located on the upper portion of the pile body boundary and is a non-grouting portion, and the anchor rod static pressure steel pipe pile body is located on the lower portion of the pile body boundary and is a grouting portion. A plurality of groups of protection parts are arranged on the periphery of the grouting part on the anchor rod static pressure steel pipe pile body; a pile tip piece is arranged at the bottom end of the anchor rod static pressure steel pipe pile body; the anchor rod static pressure steel pipe pile body isolates underground water or slurry outside the anchor rod static pressure steel pipe pile body through the protection piece. The sleeve valve pipe is pre-buried in the anchor rod static pressure steel pipe pile body, broken stone and concrete are backfilled at intervals, a plurality of closed grouting cavities are constructed in the grouting portion of the inner cavity of the anchor rod static pressure steel pipe pile, a segmented, constant-pressure and quantitative grouting mode is achieved, and grout can be diffused and filled in different stratums more effectively.

Description

Technical Field

[0001] This utility model relates to a high-bearing-capacity anchored static pressure steel pipe pile. Background Technology

[0002] With the continuous development of construction engineering and the ever-increasing requirements for engineering quality, the effectiveness and reliability of foundation reinforcement for existing buildings are facing greater challenges.

[0003] Currently, the common construction method to improve the bearing capacity of anchored static pressure steel pipe piles is the post-grouting process, which involves opening grouting holes in the pile body and then grouting through the grouting pipe inside the pile body after pile driving is completed, thereby improving the bearing capacity of the anchored static pressure steel pipe pile.

[0004] However, the above methods do not fully consider the differences in geological conditions in the grouting area. During grouting, the grouting pressure is not adjusted according to the differences in soil quality in different grouting areas, which can easily lead to problems such as uncontrollable grouting pressure, uncontrollable grouting location, and uncontrollable grouting volume. This can result in adverse situations such as grout channeling and waste, and grout over-diffusion, making it difficult to ensure the effect and reliability of anchor bolt static pressure steel pipe grouting reinforcement.

[0005] Therefore, a high-bearing-capacity anchored static pressure steel pipe pile is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a high-bearing-capacity anchored static pressure steel pipe pile to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-bearing-capacity anchored static pressure steel pipe pile, comprising an anchored static pressure steel pipe pile body.

[0008] The anchor static pressure steel pipe pile body is provided with a pile body boundary line on its outer periphery. The upper part of the anchor static pressure steel pipe pile body located on the pile body boundary line is the non-grouting part, and the lower part of the anchor static pressure steel pipe pile body located below the pile body boundary line is the grouting part. Multiple sets of protective components are provided on the outer periphery of the anchor static pressure steel pipe pile body located on the grouting part.

[0009] The bottom end of the anchor static pressure steel pipe pile body is provided with a pile tip;

[0010] The anchor-bolted static pressure steel pipe pile body uses protective components to isolate groundwater or mud from the anchor-bolted static pressure steel pipe pile body.

[0011] Preferably, a sleeve valve pipe is provided inside the anchor static pressure steel pipe pile body. The sleeve valve pipe is located in the middle of the anchor static pressure steel pipe pile body, and the tail end of the sleeve valve pipe extends to the pile tip.

[0012] Preferably, the end of the sleeve valve tube away from the pile tip is located on the anchor rod static pressure steel pipe pile body, and the distance between the top of the sleeve valve tube and the top of the anchor rod static pressure steel pipe pile body is 20cm.

[0013] Preferably, the protective component includes barbed angle iron, and a cavity is formed between the barbed angle iron and the anchor rod static pressure steel pipe pile body. A wedge-shaped pile body grouting hole is opened on the outer periphery of the anchor rod static pressure steel pipe pile body at the cavity, and a wedge-shaped pile body plug is provided in the wedge-shaped pile body grouting hole.

[0014] Preferably, the wedge-shaped pile plug and the wedge-shaped pile grouting hole are mutually matched, and the radius of the wedge-shaped pile plug at the outer wall of the anchor static pressure steel pipe pile body is greater than the radius of the wedge-shaped pile plug at the inner wall of the anchor static pressure steel pipe pile body.

[0015] Preferably, the pile tip component includes a pile tip cylinder, a cylinder plate is provided on the top surface of the pile tip cylinder, a reinforcing rib plate is provided on the lower part of the cylinder plate, and the reinforcing rib plate is in the shape of a cross.

[0016] Preferably, four sets of pile tip grouting holes are provided at the cylindrical plate, and each pile tip grouting hole is provided with a wedge-shaped pile tip plug.

[0017] Preferably, the sleeve valve pipe has a grouting hole on its outer periphery, and the height of the sleeve valve pipe grouting hole is the same as that of the wedge-shaped pile grouting hole, and both the sleeve valve pipe grouting hole and the wedge-shaped pile grouting hole are located in the middle of each soil layer.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This utility model, by pre-embedding the sleeve valve pipe inside the anchor static pressure steel pipe pile body and backfilling the inner cavity of the anchor static pressure steel pipe pile with alternating crushed stone and concrete, constructs multiple closed grouting chambers in the grouting part of the inner cavity of the anchor static pressure steel pipe pile, realizing a segmented, constant pressure, and quantitative grouting mode, which allows the grout to diffuse and fill more effectively in different strata.

[0020] By using segmented grouting, geological differences can be fully considered, enabling a personalized and precise grouting process. It allows for precise control based on the characteristics of different geological formations.

[0021] For areas with loose soil, the amount of grouting can be increased and the pressure reduced to ensure that the grout fully penetrates and achieves stable reinforcement.

[0022] For areas with hard soil, the grouting pressure can be increased to facilitate the smooth injection of grout into the compact soil layer, achieving the desired reinforcement effect.

[0023] Constant pressure and quantitative grouting can strictly control the grouting process and avoid waste of grouting materials. While ensuring effective diffusion and filling of the grout, it significantly improves the grouting effect, thereby significantly increasing the bearing capacity of a single pile.

[0024] The grouting equipment of this invention is simple and the construction process is convenient. It can be widely used in silty soil, silt, sand, clay, strongly weathered rock, moderately weathered rock and special soil geological conditions.

[0025] This utility model has extremely high application value and economic benefits. In practical engineering applications, it can provide reliable protection for the reinforcement of existing building foundations, reduce engineering costs, and improve engineering quality and efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0027] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of the pile tip structure according to an embodiment of the present utility model;

[0029] Figure 4 This is a schematic diagram of the cross-sectional structure of the pile tip component according to an embodiment of the present utility model;

[0030] Figure 5 This is an enlarged schematic diagram of the structure at point A in an embodiment of this utility model;

[0031] Figure 6 This is an enlarged schematic diagram of the protective component structure according to an embodiment of the present utility model;

[0032] Figure 7 This is a schematic diagram of the grouting process for the anchor static pressure pile according to an embodiment of the present invention.

[0033] In the diagram: 1. Anchor bolt static pressure steel pipe pile body; 101. Non-grouting section; 102. Grouting section; 2. Pile body boundary line; 3. Protective components; 301. Barbed angle iron; 302. Cavity; 303. Wedge-shaped pile body grouting hole; 304. Wedge-shaped pile body plug; 4. Pile tip component; 401. Pile tip cylinder; 402. Cylinder plate; 403. Reinforcing rib plate; 404. Pile tip grouting hole; 405. Wedge-shaped pile tip plug; 5. Sleeve valve pipe; 501. Sleeve valve pipe grouting hole. Detailed Implementation

[0034] To address the problem that existing methods cannot fully consider the differences in geological conditions of grouting areas, and that adjusting grouting pressure according to soil differences in different grouting areas makes it difficult to ensure the effectiveness and reliability of anchor bolt static pressure steel pipe grouting reinforcement, this utility model provides a high-bearing-capacity anchor bolt static pressure steel pipe pile. The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0035] Please see Figure 1-7 This utility model provides a high-bearing-capacity anchored static pressure steel pipe pile, including the anchored static pressure steel pipe pile body 1.

[0036] The anchor-bolt static pressure steel pipe pile body 1 has a pile body boundary line 2 on its outer periphery. The part of the anchor-bolt static pressure steel pipe pile body 1 above the pile body boundary line 2 is the non-grouting part 101, and the part of the anchor-bolt static pressure steel pipe pile body 1 below the pile body boundary line 2 is the grouting part 102. Multiple sets of protective components 3 are provided on the outer periphery of the anchor-bolt static pressure steel pipe pile body 1 at the grouting part 102. The protective component 3 includes barbed angle iron 301. A cavity 302 is formed between the barbed angle iron 301 and the anchor-bolt static pressure steel pipe pile body 1. A wedge-shaped pile body grouting hole 303 is opened on the outer periphery of the anchor-bolt static pressure steel pipe pile body 1 at the cavity 302, and a wedge-shaped pile body plug 304 is provided in the wedge-shaped pile body grouting hole 303. Before the pile driving operation, the wedge-shaped pile plug 304 must be used to seal the wedge-shaped pile grouting hole 303 to prevent groundwater or mud from flowing back into the anchor static pressure steel pipe pile body 1 during construction. The wedge-shaped pile plug 304 and the wedge-shaped pile grouting hole 303 are mutually compatible, and the radius of the end of the wedge-shaped pile plug 304 located on the outer wall of the anchor static pressure steel pipe pile body 1 is larger than the radius of the end of the wedge-shaped pile plug 304 located on the inner wall of the anchor static pressure steel pipe pile body 1.

[0037] The bottom end of the anchor-mounted static pressure steel pipe pile body 1 is provided with a pile tip 4 for grouting; the pile tip 4 includes a pile tip cylinder 401, a cylinder plate 402 is provided on the top surface of the pile tip cylinder 401, and a reinforcing rib plate 403 is provided on the lower part of the cylinder plate 402, and the reinforcing rib plate 403 is shaped like a cross. Four sets of pile tip grouting holes 404 are opened at the cylinder plate 402, and each pile tip grouting hole 404 is provided with a wedge-shaped pile tip plug 405.

[0038] A sleeve valve pipe 5 is provided inside the anchor static pressure steel pipe pile body 1. The sleeve valve pipe 5 is located in the middle of the anchor static pressure steel pipe pile body 1, and the tail end of the sleeve valve pipe 5 extends to the pile tip 4.

[0039] The end of the sleeve valve tube 5 furthest from the pile tip 4 is located on the anchor static pressure steel pipe pile body 1, and the distance between the top of the sleeve valve tube 5 and the top of the anchor static pressure steel pipe pile body 1 is 20cm. The bottom end of the sleeve valve tube 5 is located at the top of the pile tip 4, and its upper end is 20cm higher than the top of the anchor static pressure steel pipe pile body 1 to facilitate subsequent grouting operations. A sleeve valve tube grouting hole 501 is provided on the outer periphery of the sleeve valve tube 5, and the height of the sleeve valve tube grouting hole 501 is consistent with that of the wedge-shaped pile body grouting hole 303. Both the sleeve valve tube grouting hole 501 and the wedge-shaped pile body grouting hole 303 are located in the middle of each soil layer.

[0040] The anchor-bolt static pressure steel pipe pile body 1 is isolated from groundwater or mud by the protective component 3.

[0041] The working principle of the high-bearing-capacity anchored static pressure steel pipe pile provided by this utility model is as follows: the sleeve valve pipe 5 is pre-embedded inside the anchored static pressure steel pipe pile body 1, and the inner cavity of the anchored static pressure steel pipe pile is backfilled with crushed stone and concrete in an alternating manner. Then, a closed grouting chamber is constructed in the grouting part 102 of the inner cavity of the anchored static pressure steel pipe pile, realizing the segmented, constant pressure, and quantitative grouting mode, so that the grout can diffuse and fill more effectively in different strata.

[0042] By using segmented grouting, geological differences can be fully considered, enabling a personalized and precise grouting process. It allows for precise control based on the characteristics of different geological formations.

[0043] For areas with loose soil, the amount of grouting can be increased and the pressure reduced to ensure that the grout fully penetrates and achieves stable reinforcement.

[0044] For areas with hard soil, the grouting pressure can be increased to facilitate the smooth injection of grout into the compact soil layer, achieving the desired reinforcement effect.

[0045] Constant pressure and quantitative grouting can strictly control the grouting process and avoid unnecessary waste of grouting materials. While ensuring effective diffusion and filling of the grout, it significantly improves the grouting effect and thus significantly increases the bearing capacity of a single pile.

[0046] The grouting equipment of this invention is simple and the construction process is convenient. It can be widely used in silty soil, silt, sand, clay, strongly weathered rock, moderately weathered rock and special soil geological conditions.

[0047] This utility model has extremely high application value and economic benefits. In practical engineering applications, it can provide reliable protection for the reinforcement of existing building foundations, reduce engineering costs, and improve engineering quality and efficiency.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-bearing-capacity anchored static pressure steel pipe pile, characterized in that: Includes the anchor-bolted static pressure steel pipe pile body (1). The anchor static pressure steel pipe pile body (1) has a pile body boundary line (2) on its outer periphery. The upper part of the anchor static pressure steel pipe pile body (1) is a non-grouting part (101) and the lower part of the anchor static pressure steel pipe pile body (1) is a grouting part (102). Multiple sets of protective components (3) are provided on the outer periphery of the anchor static pressure steel pipe pile body (1) located at the grouting part (102). The bottom end of the anchor static pressure steel pipe pile body (1) is provided with a pile tip (4). The anchor static pressure steel pipe pile body (1) isolates groundwater or mud from the anchor static pressure steel pipe pile body (1) through the protective component (3).

2. The high-bearing-capacity anchored static pressure steel pipe pile according to claim 1, characterized in that: The anchor static pressure steel pipe pile body (1) is provided with a sleeve valve pipe (5), which is located in the middle of the anchor static pressure steel pipe pile body (1), and the tail end of the sleeve valve pipe (5) extends to the pile tip (4).

3. The high-bearing-capacity anchored static pressure steel pipe pile according to claim 2, characterized in that: The end of the sleeve valve tube (5) away from the pile tip (4) is located on the anchor rod static pressure steel pipe pile body (1), and the distance between the top of the sleeve valve tube (5) and the top of the anchor rod static pressure steel pipe pile body (1) is 20cm.

4. A high-bearing-capacity anchored static pressure steel pipe pile according to claim 3, characterized in that: The protective component (3) includes a barbed angle iron (301), and a cavity (302) is formed between the barbed angle iron (301) and the anchor rod static pressure steel pipe pile body (1). A wedge-shaped pile body grouting hole (303) is opened on the outer periphery of the anchor rod static pressure steel pipe pile body (1) at the cavity (302), and a wedge-shaped pile body plug (304) is provided in the wedge-shaped pile body grouting hole (303).

5. A high-bearing-capacity anchored static pressure steel pipe pile according to claim 4, characterized in that: The wedge-shaped pile plug (304) and the wedge-shaped pile grouting hole (303) are mutually matched, and the radius of the wedge-shaped pile plug (304) located at the outer wall of the anchor static pressure steel pipe pile body (1) is greater than the radius of the wedge-shaped pile plug (304) located at the inner wall of the anchor static pressure steel pipe pile body (1).

6. A high-bearing-capacity anchored static pressure steel pipe pile according to claim 5, characterized in that: The pile tip component (4) includes a pile tip cylinder (401), a cylinder plate (402) is provided on the top surface of the pile tip cylinder (401), a reinforcing rib plate (403) is provided on the lower part of the cylinder plate (402), and the reinforcing rib plate (403) is in the shape of a "+".

7. A high-bearing-capacity anchored static pressure steel pipe pile according to claim 6, characterized in that: Four sets of pile tip grouting holes (404) are provided at the cylindrical plate (402), and each pile tip grouting hole (404) is provided with a wedge-shaped pile tip plug (405).

8. A high-bearing-capacity anchored static pressure steel pipe pile according to claim 7, characterized in that: The sleeve valve pipe (5) has a sleeve valve pipe grouting hole (501) on its outer periphery, and the sleeve valve pipe grouting hole (501) is at the same height as the wedge-shaped pile body grouting hole (303), and the sleeve valve pipe grouting hole (501) and the wedge-shaped pile body grouting hole (303) are both located in the middle of each soil layer.

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