Recyclable section steel and cement soil combined precast pile

Abstract

The utility model relates to the technical field of underground engineering and foundation pit engineering, in particular to a recoverable section steel and cement soil combined precast pile, which comprises a cement soil precast pile and a section steel body, the section steel body is positioned in the cement soil precast pile, and antifriction materials are filled between the section steel body and the cement soil precast pile. A hoisting hole is formed in the surface of the profile steel body, the hoisting hole is formed in one end, outside the cement soil precast pile, of the profile steel body, the section of the cement soil precast pile is round, I-shaped or rectangular, and the section of the profile steel body is I-shaped. According to the utility model, the product is simple in manufacturing process in a factory, cement soil can be fully mixed by using earthwork transported outwards in engineering, waste resources can be recycled and reused, the requirement of green development is met, after engineering construction is completed, the section steel body can be pulled out and reused, the waste of steel is reduced, and the influence of engineering construction on the environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of underground engineering and foundation pit engineering, in particular to a recyclable steel-cement-soil combined prefabricated pile. Background Art

[0002] Precast piles are a type of pile foundation component that is prefabricated in a factory or construction site. They are mainly used in foundation pit projects to withstand horizontal soil pressure loads.

[0003] After the traditional support piles are drilled, premixed cement soil is poured and then steel sections are inserted. However, the premixed cement soil is often not supplied in a timely manner, which causes the on-site machinery and equipment to be unable to perform normally and the construction period to be extended. This needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that after the traditional support piles are bored, premixed cement soil is poured and then steel sections are inserted. The premixed cement soil is often supplied in a delayed manner, resulting in the inability of on-site mechanical equipment to exert normal production efficiency and prolonged construction period. A recyclable steel-cement soil combination prefabricated pile is proposed.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a recyclable steel-cement-soil composite precast pile, comprising a cement-soil precast pile and a steel body, wherein the steel body is located in the cement-soil precast pile, and the space between the steel body and the cement-soil precast pile is filled with anti-friction material, and the surface of the steel body is provided with lifting holes. The manufacturing process of this product in the factory is simple, and the cement soil can make full use of the earth transported out of the project for mixing, which can realize the recycling and reuse of waste resources and meet the needs of green development. After the construction of the project is completed, the steel body can be pulled out and reused, which reduces the waste of steel and reduces the impact of the project construction on the environment.

[0006] Preferably, the hoisting hole is located at one end of the steel body outside the cement soil precast pile. The steel body can be hoisted through the hoisting hole to facilitate construction operations. At the construction site, the hoisting equipment can quickly and accurately hoist the precast pile to the designated position, reducing the difficulty and risk of manual operation and improving the safety and efficiency of construction. The cement soil recyclable steel precast pile is prefabricated in the project, transported to the site, and hoisted for construction. A small amount of grouting is performed around the precast pile, thereby greatly improving the construction speed. After the construction is completed, the steel body can be pulled out for reuse.

[0007] Preferably, the cross-section of the cement-soil precast pile is circular, I-shaped or rectangular, and the surface of the cement-soil precast pile is provided with a wire mesh. The cement-soil precast pile is a mixture of cement, soil and other admixtures, and is produced by the factory in accordance with the design strength index requirements. The shape and diameter of the cement soil are determined according to the design requirements. The production line designs and manufactures different molds according to the shape of the cement-soil recyclable steel precast pile. After the steel body is welded and processed in the factory according to the design length, it is placed in the mold and the fluid cement soil is poured. After the cement soil solidifies and reaches the design strength, the mold can be removed.

[0008] Preferably, the cross-section of the steel body is I-shaped, and the steel body is H-shaped steel. The specifications can be H700×700×13×24, H500×300×11×18 or other models determined according to design calculations. The material of the steel body can be Q355B or Q235B.

[0009] Preferably, the end of the cement-soil precast pile away from the steel body is a solid structure, which can effectively bear horizontal loads.

[0010] Preferably, grooves are provided on the surface of the cement-soil precast piles. This design effectively improves the bonding integrity between the precast piles and the surrounding medium.

[0011] Preferably, the friction-reducing material is a drag reducer, and may also be wrapped with oil felt, which can reduce the friction between the steel body and the cement-soil precast piles, making it easier to pull out and recycle the steel body after the project is completed.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] In the present invention, the cement-soil recyclable steel precast piles are prefabricated in the project, transported to the site, and hoisted for construction. A small amount of grouting is performed around the precast piles, thereby greatly improving the construction speed. After the construction is completed, the steel body can be pulled out for reuse. The production line designs and manufactures different molds according to the shape of the cement-soil recyclable steel precast piles. After the steel body is welded and processed in the factory according to the designed length, it is placed in the mold and poured with fluid cement soil. After the cement soil solidifies and reaches the designed strength, the mold can be removed. The manufacturing process of this product in the factory is simple, and the cement soil can make full use of the earth transported out of the project for mixing, which can realize the recycling and reuse of waste resources and meet the needs of green development. After the construction is completed, the steel body can be pulled out and reused, which reduces the waste of steel and reduces the impact of engineering construction on the environment.

[0014] In the utility model, the friction-reducing material is used in the solution to reduce the friction between the steel body and the cement-soil precast pile, making it easier to pull out and recycle the steel body after the project is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a structural schematic diagram of a recyclable steel-cement-soil composite prefabricated pile;

[0016] Figure 2 This is a structural schematic diagram of a first embodiment of a recyclable steel-cement-soil composite prefabricated pile proposed in the utility model;

[0017] Figure 3 This is a structural schematic diagram of a second embodiment of a recyclable steel-cement-soil composite prefabricated pile proposed in the utility model;

[0018] Figure 4 This is a structural diagram of a third embodiment of a recyclable steel-cement-soil composite prefabricated pile proposed in the present invention;

[0019] Figure 5 This is a structural diagram of a fourth embodiment of a recyclable steel-cement-soil composite prefabricated pile proposed in the present invention;

[0020] Figure 6 This is a structural diagram of a fifth embodiment of a recyclable steel-cement-soil composite prefabricated pile proposed in the present invention;

[0021] Figure 7 The utility model provides a structural schematic diagram of a sixth embodiment of a recyclable steel-cement-soil composite prefabricated pile.

[0022] Legend:

[0023] 1. Cement-soil precast piles; 2. Steel body; 3. Friction-reducing material; 4. Lifting holes; 5. Wire mesh; 6. Grooves. DETAILED DESCRIPTION Example

[0024] See also Figure 1 and Figure 2 The utility model provides a technical solution: a recyclable steel-cement-soil combined precast pile, comprising a cement-soil precast pile 1 and a steel body 2, the steel body 2 being located in the cement-soil precast pile 1, and a friction-reducing material 3 being filled between the steel body 2 and the cement-soil precast pile 1, and a lifting hole 4 being provided on the surface of the steel body 2. The production process of this product in the factory is simple, and the cement soil can make full use of the earth transported out of the project for mixing, which can realize the recycling and reuse of waste resources and meet the needs of green development. After the construction is completed, the steel body 2 can be pulled out and reused, which reduces the waste of steel and reduces the impact of the construction on the environment.

[0025] Preferably, the lifting hole 4 is located at one end of the steel body 2 outside the cement soil precast pile 1. The steel body 2 can be lifted through the lifting hole 4 to facilitate construction operations. At the construction site, the lifting equipment can quickly and accurately lift the precast pile to the designated position, reducing the difficulty and risk of manual operation and improving the safety and efficiency of construction. The cement soil recyclable steel precast pile is prefabricated in the project, transported to the site, and then hoisted for construction. A small amount of grouting is performed around the precast pile, thereby greatly improving the construction speed. After the construction is completed, the steel body 2 can be pulled out for reuse.

[0026] In this embodiment: the cross-section of the cement-soil precast pile 1 is circular, and a wire mesh 5 is provided on the surface of the cement-soil precast pile 1. The cement-soil precast pile 1 is a mixture of cement, soil and other admixtures, which is produced by the factory according to the design strength index requirements. The shape and diameter of the cement soil are determined according to the design requirements. The production line designs and manufactures different molds according to the shape of the cement-soil recyclable steel precast pile. After the steel body 2 is welded and processed in the factory according to the design length, it is placed in the mold and the fluid cement soil is poured. After the cement soil solidifies and reaches the design strength, the mold can be removed.

[0027] Specifically, the cross section of the steel body 2 is I-shaped, and the steel body 2 is H-shaped steel. The specifications can be H700×700×13×24, H500×300×11×18 or other models determined according to design calculations. The material of the steel body 2 can be Q355B or Q235B.

[0028] In this embodiment, the end of the cement-soil precast pile 1 away from the steel body 2 is a solid structure, which can effectively bear the horizontal load.

[0029] In this embodiment, the friction-reducing material 3 is a drag reducer, and may also be wrapped with oil felt, which can reduce the friction between the steel body 2 and the cement-soil precast pile 1, making it easier to pull out and recycle the steel body 2 after the project is completed. Example

[0030] See also Figure 1 and Figure 3 , a recyclable steel-cement-soil composite precast pile, compared with embodiment 1, also includes: the cross-section of the cement-soil precast pile 1 is I-shaped, and the surface of the cement-soil precast pile 1 is provided with a wire mesh 5, which effectively improves the bonding integrity between the precast pile and the surrounding medium. Example

[0031] See also Figure 1 and Figure 4 , a recyclable steel-cement-soil composite precast pile, compared with embodiment 1, further includes: the cross-section of the cement-soil precast pile 1 is rectangular, and a steel mesh 5 is provided on the surface of the cement-soil precast pile 1. Example

[0032] See also Figure 1 and Figure 5 , a recyclable steel-cement-soil composite precast pile, compared with embodiment 1, further comprising: the cross-section of the cement-soil precast pile 1 is circular, and a groove 6 is opened on the surface of the cement-soil precast pile 1. Example

[0033] See also Figure 1 and Figure 6 , a recyclable steel-cement-soil composite precast pile, compared with the first embodiment, further includes: the cross-section of the cement-soil precast pile 1 is I-shaped, and a groove 6 is opened on the surface of the cement-soil precast pile 1. Example

[0034] See also Figure 1 and Figure 7 , a recyclable steel-cement-soil composite precast pile, compared with embodiment 1, further comprising: the cross-section of the cement-soil precast pile 1 is rectangular, and a groove 6 is opened on the surface of the cement-soil precast pile 1.

[0035] Working principle: The recyclable cement-soil steel precast piles are prefabricated in the project, transported to the site, and hoisted for construction. A small amount of grouting is performed around the precast piles, which greatly improves the construction speed. After the construction is completed, the steel body 2 can be pulled out for reuse. The production line designs and manufactures different molds according to the shape of the recyclable cement-soil steel precast piles. After the steel body 2 is welded and processed in the factory according to the designed length, it is placed in the mold and poured with fluid cement soil. After the cement soil solidifies and reaches the designed strength, the mold can be removed. The factory manufacturing process of this product is simple. The cement soil can make full use of the earth transported out of the project for mixing, and the waste resources can be recycled and reused, which meets the needs of green development. After the construction is completed, the steel body 2 can be pulled out and reused, which reduces the waste of steel and reduces the impact of engineering construction on the environment. This solution uses anti-friction material 3 to reduce the friction between the steel body 2 and the cement-soil precast pile 1, which is convenient for pulling out and recycling the steel body 2 after the project is completed.

Claims

1. A recyclable steel-cement-soil composite precast pile, comprising a cement-soil precast pile (1) and a steel body (2), characterized in that: The steel body (2) is located in the cement-soil precast pile (1), a friction-reducing material (3) is filled between the steel body (2) and the cement-soil precast pile (1), and a hoisting hole (4) is provided on the surface of the steel body (2).

2. The recyclable steel-cement-soil composite prefabricated pile according to claim 1, characterized in that: The hoisting hole (4) is located at one end of the steel body (2) outside the cement-soil precast pile (1).

3. The recyclable steel-cement-soil composite prefabricated pile according to claim 1, characterized in that: The cross section of the cement-soil precast pile (1) is circular, I-shaped or rectangular, and a steel mesh (5) is provided on the surface of the cement-soil precast pile (1).

4. The recyclable steel-cement-soil composite prefabricated pile according to claim 1, characterized in that: The cross section of the steel body (2) is I-shaped.

5. The recyclable steel-cement-soil composite prefabricated pile according to claim 1, characterized in that: The end of the cement-soil prefabricated pile (1) away from the steel body (2) is a solid structure.

6. The recyclable steel-cement-soil composite prefabricated pile according to claim 1, characterized in that: A groove (6) is provided on the surface of the cement-soil prefabricated pile (1).

7. The recyclable steel-cement-soil composite prefabricated pile according to claim 1, characterized in that: The friction-reducing material (3) is a drag reducer.

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