Steel pipe pile

Abstract

The steel pipe pile comprises a steel pipe, a pile head, an inner cement layer, an outer cement layer and embedded steel bars, the pile head is welded and fixed to the bottom end of the steel pipe, the lower portion of the pile head is conical, a plurality of grout outlet holes are formed in the side wall of the steel pipe in the height direction, the inner cement layer is arranged in the steel pipe, and the outer cement layer is arranged in the steel pipe. The lower portions of the embedded steel bars are embedded in the inner cement layer, the upper portions of the embedded steel bars extend out of the top of the steel pipe, and the outer cement layer wraps the outer side of the steel pipe. According to the utility model, the protection effect on the structure can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of slope protection, in particular to a steel pipe pile. Background Art

[0002] With the development of the urbanization process, there are more and more slope projects encountered in engineering. In order to save land, it is often necessary to trim or steepen the existing slopes to make room for the land at the foot of the slope for the construction of roads, buildings, parks, parking lots and other facilities. In the current situation, there may be existing structures such as electric towers, fences, and houses at the top of the slope. When the distance from the top of the slope is relatively close, the slope is relatively high, steep, and the geological conditions are poor, the transformation of the slope will undoubtedly increase the safety risks of the structures at the top of the slope and the slope itself.

[0003] Therefore, in order to ensure the stability of slope protection construction, the existing technology is to drive pile columns between the structure and the slope to reinforce the local foundation and enhance the stability and integrity of the structure. Therefore, in order to ensure the protection effect on the structure, it is necessary to design a steel pipe pile that can be firmly fixed in the slope. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a steel pipe pile to ensure the protection effect on the structure.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A steel pipe pile includes a steel pipe, a pile head, an inner cement layer, an outer cement layer and embedded steel bars. The pile head is welded and fixed to the bottom end of the steel pipe, and the lower part of the pile head is conical. A plurality of slurry outlet holes are arranged on the side wall of the steel pipe along the height direction. The inner cement layer is arranged inside the steel pipe. The lower part of the embedded steel bar is embedded in the inner cement layer, and the upper part of the embedded steel bar extends out from the top of the steel pipe. The outer cement layer wraps the outside of the steel pipe.

[0007] Preferably, a plurality of groups of slurry outlet hole groups are uniformly arranged on the side wall of the steel pipe along the height direction. Each slurry outlet hole group includes two slurry outlet holes uniformly arranged along the circumferential direction of the steel pipe.

[0008] Preferably, in two adjacent slurry outlet hole groups up and down, the two slurry outlet holes of the slurry outlet hole group located relatively above and the two slurry outlet holes of the slurry outlet hole group located relatively below are staggered.

[0009] Preferably, the vertical distance between two adjacent slurry outlet hole groups on the side wall of the steel pipe is 250 mm.

[0010] Preferably, the aperture of the slurry outlet hole is 10 mm.

[0011] Preferably, four slurry outlets are evenly arranged in the lower region of the side wall of the steel pipe along the circumferential direction.

[0012] Preferably, the slurry outlet is rectangular, the height of the slurry outlet is 200 mm, and the width is 30 mm.

[0013] Preferably, the pile head includes a sleeve and a cross-shaped plate. The bottom of the sleeve is closed, the cross-shaped plate is fixed to the bottom end outside the sleeve, and the cross-shaped plate is conical. The bottom end of the steel pipe penetrates and is welded inside the sleeve.

[0014] Preferably, the cross-shaped plate includes two vertical and perpendicularly intersecting steel plates, and the top ends of the steel plates are welded to the bottom end outside the sleeve.

[0015] Preferably, the thickness of the steel plate is 20 mm.

[0016] Compared with the prior art, the steel pipe pile of the embodiment of the present utility model has the beneficial effects that:

[0017] In the present utility model, during construction, drilling can be carried out first, and then the steel pipe is inserted into the slope hole. Since the lower part of the pile head is conical, it is convenient to insert the steel pipe into a predetermined depth in the slope hole. Then, cement slurry is injected into the steel pipe, and the cement slurry can flow out from the slurry outlet holes. Furthermore, after the cement slurry solidifies, an inner cement layer can be formed inside the steel pipe, and an outer cement layer can be formed outside the steel pipe, thereby ensuring the stability of the steel pipe pile in the slope hole, which is beneficial to ensuring the protection effect on the structure. In addition, before the cement slurry solidifies, the embedded steel bars can be embedded in the inner cement layer, and the upper parts of the embedded steel bars extend outside the steel pipe, so that multiple steel pipe piles can be connected into one body through the connecting capping beam, thereby achieving a better protection effect on the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0019] Figure 2 is Figure 1 the sectional view taken along A-A in

[0020] Figure 3 is Figure 1 the sectional view taken along B-B in

[0021] In the figure, 1, steel pipe; 11, slurry outlet hole; 12, slurry outlet; 2, pile head; 21, sleeve; 22, cross-shaped plate; 3, inner cement layer; 4, outer cement layer; 5, embedded steel bar. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0023] In the description of the present utility model, it should be understood that the term "comprising" used in the specification of the present utility model means the presence of the described features, integers, steps, operations, components and / or assemblies, but does not exclude the presence or addition of one or more other features, integers, steps, operations, components, assemblies and / or their groups. It should be understood that when we say a component is "connected" to another component, it can be directly connected to other components, or there may also be intermediate components. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0024] As Figures 1 to 3 shown, the present utility model relates to a steel pipe pile, which includes a steel pipe 1, a pile head 2, an inner cement layer 3, an outer cement layer 4 and embedded steel bars 5. The pile head 2 is welded and fixed to the bottom end of the steel pipe 1, and the lower part of the pile head 2 is conical. A plurality of slurry outlet holes 11 are formed in the side wall of the steel pipe 1 along the height direction. The inner cement layer 3 is arranged inside the steel pipe 1. The lower part of the embedded steel bar 5 is embedded in the inner cement layer 3, and the upper part of the embedded steel bar 5 extends out from the top of the steel pipe 1. The outer cement layer 4 wraps around the outside of the steel pipe 1.

[0025] In the present utility model, during construction, drilling can be carried out first, and then the steel pipe 1 is inserted into the slope hole. Since the lower part of the pile head 2 is conical, it is convenient to insert the steel pipe 1 into a predetermined depth in the slope hole. Then, cement slurry is injected into the steel pipe 1, and the cement slurry can flow out from the slurry outlet holes 11. Thus, after the cement slurry solidifies, an inner cement layer 3 can be formed inside the steel pipe 1, and an outer cement layer 4 can be formed outside the steel pipe 1, so as to ensure the stability of the steel pipe pile in the slope hole, and can also isolate the contact between the steel pipe 1 and water and soil, enhancing the corrosion resistance, which is beneficial to ensuring the protection effect on the structure. In addition, before the cement slurry solidifies, the embedded steel bar 5 can be embedded in the inner cement layer 3, and the upper part of the embedded steel bar 5 extends out of the steel pipe 1, so that a plurality of steel pipe piles can be connected into one body through the connecting capping beam, thereby achieving a better protection effect on the structure.

[0026] The diameter of the steel pipe 1 is 168 mm, and the wall thickness of the side wall of the steel pipe 1 is 6 mm.

[0027] In this embodiment, a plurality of slurry outlet hole groups are evenly formed in the side wall of the steel pipe 1 in the height direction. Each slurry outlet hole group includes two slurry outlet holes 11 evenly formed in the circumferential direction of the steel pipe 1, so as to better wrap an outer cement layer 4 outside the steel pipe 1, ensure the stability of the steel pipe pile, and thus ensure the protective effect on the structure.

[0028] Preferably, in two adjacent slurry outlet hole groups up and down, the two slurry outlet holes 11 of the slurry outlet hole group located relatively above and the two slurry outlet holes 11 of the slurry outlet hole group located relatively below are staggeredly arranged, so as to also better wrap an outer cement layer 4 outside the steel pipe 1.

[0029] Furthermore, the distance between two adjacent slurry outlet hole groups in the vertical direction in the side wall of the steel pipe 1 is 250 mm, so as to also better wrap an outer cement layer 4 outside the steel pipe 1.

[0030] Even further, the aperture of the slurry outlet hole 11 is 10 mm, so that the cement slurry can flow out from inside the steel pipe 1.

[0031] In this embodiment, four slurry outlets 12 are evenly arranged in the lower region of the side wall of the steel pipe 1 in the circumferential direction. The slurry outlets 12 are rectangular, the height of the slurry outlets 12 is 200 mm, and the width is 30 mm, so as to better let the cement slurry flow out to the outside of the steel pipe 1.

[0032] In this embodiment, the pile head 2 includes a sleeve 21 and a cross-shaped plate 22. The bottom of the sleeve 21 is hermetically arranged. The cross-shaped plate 22 is fixed to the bottom end outside the sleeve 21, and the cross-shaped plate 22 is conical. The bottom end of the steel pipe 1 passes through and is welded to the inside of the sleeve 21.

[0033] By passing the bottom end of the steel pipe 1 through and welding it to the inside of the sleeve 21, the stability of the connection between the steel pipe 1 and the pile head 2 can be ensured.

[0034] Preferably, the cross-shaped plate 22 includes two vertically and perpendicularly intersecting steel plates. The top ends of the steel plates are welded to the bottom end outside the sleeve 21 to ensure the stability of the connection between the steel plates and the sleeve 21.

[0035] Furthermore, the thickness of the steel plate is 20 mm, so that the pile head 2 has sufficient structural strength and can smoothly let the steel pipe 1 penetrate into the slope hole.

[0036] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can still be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A steel pipe pile, characterized in that: It includes a steel pipe, a pile head, an inner cement layer, an outer cement layer and embedded steel bars. The pile head is welded and fixed to the bottom end of the steel pipe, and the lower part of the pile head is conical. The side wall of the steel pipe is provided with a plurality of slurry outlet holes along the height direction. The inner cement layer is arranged inside the steel pipe, the lower part of the embedded steel bars is embedded in the inner cement layer, the upper part of the embedded steel bars extends out from the top of the steel pipe, and the outer cement layer is wrapped around the outside of the steel pipe.

2. The steel pipe pile according to claim 1, characterized in that: The side wall of the steel pipe is evenly provided with a plurality of groups of slurry outlet holes along the height direction, and the slurry outlet hole groups include two slurry outlet holes evenly provided along the circumferential direction of the steel pipe.

3. The steel pipe pile according to claim 2, characterized in that: In two upper and lower adjacent slurry outlet hole groups, the two slurry outlet holes of the slurry outlet hole group located relatively above and the two slurry outlet holes of the slurry outlet hole group located relatively below are arranged alternately.

4. The steel pipe pile according to claim 2, characterized in that: The vertical distance between two adjacent slurry outlet hole groups in the side wall of the steel pipe is 250 mm.

5. The steel pipe pile according to claim 1, characterized in that: The diameter of the slurry outlet hole is 10 mm.

6. The steel pipe pile according to claim 1, characterized in that: The lower area of ​​the side wall of the steel pipe is evenly provided with four slurry outlets along the circumferential direction.

7. The steel pipe pile according to claim 6, characterized in that: The slurry outlet is rectangular, with a height of 200 mm and a width of 30 mm.

8. The steel pipe pile according to claim 1, characterized in that: The pile head includes a sleeve and a cross-shaped plate. The bottom of the sleeve is closed. The cross-shaped plate is fixed to the bottom end outside the sleeve and is conical. The bottom end of the steel pipe is passed through and welded to the inside of the sleeve.

9. The steel pipe pile according to claim 8, characterized in that: The cross-shaped plate includes two vertical and perpendicularly intersecting steel plates, and the top ends of the steel plates are welded to the bottom ends outside the sleeve.

10. The steel pipe pile according to claim 9, characterized in that: The thickness of the steel plate is 20 mm.

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