Soil-sampling-free self-sinking type foundation

Abstract

The invention relates to a soil-sampling-free self-sinking type foundation which comprises a cylinder wall with openings in the upper end and the lower end. The balance weight bin is arranged on the upper portion of the cylinder wall and used for being filled with weight increasing materials. The invention provides a foundation which sinks in place only by means of self weight of materials without soil taking, and is suitable for deep water and deep and soft stratums. According to the foundation, the balance weight bin is filled with balance weight materials through the balance weight holes, and structural weight increasing is achieved. And under the action of the structural weight, the outer cylinder wall automatically sinks after cutting soil. And the underwater soft stratum does not need to be reinforced, and soil sampling is not needed. And meanwhile, the foundation is cut into the soil body through the soil plug balance feet at different angles, and the bearing capacity is provided for the foundation through the soil plug effect generated by cutting into the soil body.

Description

Technical Field

[0001] The present application relates to the technical field of civil engineering and foundation treatment, and in particular to a self-sinking foundation without soil excavation. Background Art

[0002] In the field of civil engineering, foundation construction, especially in deep water and deep soft strata, has always been a difficulty and challenge in engineering construction. Traditional foundation forms, such as conventional expanded foundations, often require complex reinforcement of the foundation to form a composite foundation to meet the bearing capacity of the foundation when facing the weak bearing capacity of the underwater strata soil. However, this reinforcement process not only requires excavation and reinforcement of deep foundation soil, but is also accompanied by unfavorable factors such as long construction period, high cost, and great environmental impact.

[0003] As a common deepwater foundation, caisson foundation sinks by continuously taking soil from the well hole until the base reaches a stratum with a higher bearing capacity. Subsequently, underwater concrete is poured in the well hole to seal the bottom, eventually forming a stable foundation structure. Although caisson foundation has a certain applicability under certain conditions, the large amount of soil taking work, high construction difficulty, high safety risks and poor environmental friendliness during its construction process have seriously limited its widespread application. Summary of the invention

[0004] The embodiment of the present application provides a self-sinking foundation without soil excavation, so as to solve the problems in the related art that soil needs to be continuously excavated in the wellbore to realize the sinking of the caisson, the large amount of soil excavation work, the great difficulty of construction, the high safety risk and the poor environmental friendliness.

[0005] In a first aspect, a self-sinking foundation without soil excavation is provided, which comprises:

[0006] The cylinder wall has openings at both ends;

[0007] A counterweight bin is arranged on the upper part of the side wall of the cylinder wall and is used for filling weight-increasing materials.

[0008] In some embodiments, the bottom of the cylinder wall is provided with an inclination angle, the angle between the bottom outer wall of the cylinder wall and the horizontal direction is 60-75 degrees, and the angle between the bottom inner wall of the cylinder wall and the horizontal direction is 45-60 degrees.

[0009] In some embodiments, the counterweight bin includes side walls and a bottom plate, which together with the cylinder wall form a counterweight bin.

[0010] In some embodiments, the diameter of the side wall is smaller than the diameter of the cylinder wall.

[0011] In some embodiments, the diameter of the side wall is greater than the diameter of the cylinder wall.

[0012] In some embodiments, the barrel wall and the side wall are a combination of the same or different shapes.

[0013] In some embodiments, a plurality of partition walls are evenly arranged in the vertical direction in the counterweight bin.

[0014] In some embodiments, the counterweight bin is provided with a cover plate, and the cover plate is provided with a plurality of counterweight holes.

[0015] In some embodiments, the cover plate is provided with a connecting hole, and the connecting hole is connected with the bottom of the cylinder wall.

[0016] In some embodiments, the weight-increasing material is a combination of one or more materials including crushed stone, sand, soil, and water.

[0017] The embodiment of the present application provides a self-sinking foundation that does not require soil excavation. Since the upper and lower ends of the cylinder wall are open, a counterweight bin is provided on the upper part of the side wall of the cylinder wall. During the construction process, by filling the counterweight bin with weight-increasing materials, the weight of the counterweight bin itself is used to drive the cylinder wall to gradually sink. This foundation form can sink adaptively according to the characteristics of the stratum in various soft strata, without the need for soil excavation operations, effectively avoiding many disadvantages caused by soil excavation in traditional foundation construction, greatly reducing the consumption of manpower, material resources and financial resources, greatly simplifying the construction process, significantly reducing the difficulty of construction and shortening the construction period. In addition, the method of not requiring soil excavation reduces the generation of construction noise and dust pollution from the source, and is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of the cross-sectional structure of the self-sinking foundation without soil extraction provided in Example 1 of the present application after construction is completed;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of a self-sinking foundation without soil excavation provided in Example 1 of the present application.

[0021] Figure 3 This is a schematic diagram of the top view structure of the self-sinking foundation without soil excavation provided in Example 1 of the present application.

[0022] Figure 4 This is a schematic diagram of the AA cross-sectional structure of the self-sinking foundation profile that does not require soil excavation provided in Example 1 of the present application.

[0023] Figure 5This is a schematic diagram of the cross-sectional structure of a self-sinking foundation without soil excavation provided in Example 2 of the present application.

[0024] Figure 6 This is a schematic diagram of the top view structure of the self-sinking foundation that does not require soil excavation provided in Example 3 of the present application.

[0025] Figure 7 This is a schematic diagram of the cross-sectional structure of the self-sinking foundation counterweight bin that does not require soil excavation as provided in Example 3 of the present application.

[0026] In the figure: 1, cylinder wall; 2, counterweight bin; 3, side wall; 4, bottom plate; 5, cover plate; 6, counterweight hole; 7, connecting hole; 8, partition wall; 9, soil layer; 9-1, sub-sandy soil; 9-2, silty sub-clay; 9-3, silty clay; 9-4, clay soil; 9-5, sub-clay. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] The embodiment of the present application provides a self-sinking foundation that does not require soil excavation, which can solve the problems in the related technology of needing to continuously excavate soil in the wellbore to realize the sinking of the caisson, large amount of soil excavation work, great construction difficulty, high safety risk and poor environmental friendliness.

[0029] Figure 1 It is a schematic diagram of the cross-sectional structure of the present application after the construction of a self-sinking foundation without soil excavation is completed. It should be noted that the present invention provides a foundation that does not require soil excavation and only relies on the material's own weight to sink into place, and is suitable for deep water and thick soft strata.

[0030] Embodiment 1:

[0031] like Figure 2-4 As shown, a self-sinking foundation without soil removal includes:

[0032] The cylinder wall 1 has a circular cross-section with openings at both ends. The bottom of the cylinder wall 1 is provided with an inclination angle. The angle between the bottom outer wall of the cylinder wall 1 and the horizontal direction is 75 degrees, and the angle between the bottom inner wall of the cylinder wall 1 and the horizontal direction is 60 degrees. Since the pressure on the outside of the cylinder wall 1 is larger and the pressure on the inside is smaller, different inclination angles are set to facilitate cutting into the soil, and the soil plug effect generated by cutting into the soil is used as the basis to provide bearing capacity.

[0033] The counterweight bin 2 is arranged on the upper part of the cylinder wall 1, and weight-increasing materials can be flexibly filled into the counterweight bin 2 according to design requirements. The counterweight bin 2 includes a side wall 3 and a bottom plate 4, which are enclosed together with the cylinder wall 1 to form the counterweight bin 2.

[0034] The cross section of the side wall 3 is circular, and the diameter of the cross section of the side wall 3 is smaller than the diameter of the cylinder wall 1. The side wall 3 is arranged on the inner side of the cylinder wall 1. The bottom plate 4 is arranged at the bottom of the side wall 3, and the side wall 3 is connected to the cylinder wall 1, and is used to fill weight-increasing materials such as sand and soil. Reinforcement ribs can be arranged at the contact parts between the side wall 3 and the bottom plate 4, and between the bottom plate 4 and the cylinder wall 1, or combined with bolt connection to improve the strength and stability of the overall structure, especially when the foundation is subjected to a large lateral soil pressure during the sinking process, the structural integrity can be better maintained.

[0035] Eight partition walls 8 are evenly arranged in the vertical direction inside the counterweight bin 2. The eight partition walls 8 evenly divide the counterweight bin 2 into eight small counterweight bins, which helps to evenly distribute the counterweight material and improve the stability and sinking efficiency of the foundation.

[0036] A cover plate 5 is provided at the upper end of the counterweight bin 2, which can cover the counterweight bin 2. Eight counterweight holes 6 are provided on the cover plate 5, and the eight dry counterweight holes 6 are respectively connected with the corresponding small counterweight bins. Counterweight materials such as sand and soil are filled into the counterweight bin 2 through the counterweight holes 6. There is no need to take soil, and the material can sink into place only by its own weight, thereby achieving structural weight gain. Under the action of the weight of the structure, the soil cut from the outer cylinder wall sinks automatically.

[0037] The cover plate 5 is provided with a connecting hole 7, which is connected with the bottom of the cylinder wall 1, so as to help discharge the internal air and moisture during the sinking process of the foundation and ensure the smooth sinking of the foundation.

[0038] Embodiment 2:

[0039] like Figure 5 As shown, a self-sinking foundation without soil excavation is different from Example 1 in that the cross section of the side wall 3 is circular, the diameter of the cross section of the side wall 3 is larger than the diameter of the cylinder wall 1, and is arranged on the outside of the cylinder wall 1. The bottom plate 4 is arranged at the bottom of the side wall 3, connecting the side wall 3 with the cylinder wall 1, and is used to fill weight-increasing materials such as gravel and sand. This design is suitable for occasions that require a larger counterweight, while maintaining the stability and sinking efficiency of the foundation.

[0040] Embodiment 3:

[0041] like Figure 6 and Figure 7 As shown, a self-sinking foundation without soil excavation is different from Example 1 in that the cross-section of the side wall 3 is hexagonal, the diameter of the cross-section of the side wall 3 is smaller than the diameter of the cylinder wall 1, and is arranged on the inner side of the cylinder wall 1. The bottom plate 4 is arranged at the bottom of the side wall 3, connecting the side wall 3 with the cylinder wall 1, and is used to fill weight-increasing materials such as sand.

[0042] Six partition walls 8 are evenly arranged in the vertical direction inside the counterweight bin 2. The six partition walls 8 evenly divide the counterweight bin 2 into six small counterweight bins, which helps to evenly distribute the counterweight material and improve the stability and sinking efficiency of the foundation.

[0043] A cover plate 5 is provided at the upper end of the counterweight bin 2, which can cover the counterweight bin 2. Six counterweight holes 6 are provided on the cover plate 5, and the six dry counterweight holes 6 are respectively connected with the corresponding small counterweight bins. Counterweight materials such as sand and soil are filled into the counterweight bin 2 through the counterweight holes 6. There is no need to take soil, and the material can sink into place only by its own weight, thereby achieving structural weight gain. Under the action of the weight of the structure, the soil cut from the outer cylinder wall sinks automatically.

[0044] It should be noted that the cylinder wall 1 and the side wall 3 are a combination of the same or different shapes, which is not limited to the above embodiments. The size and shape of the counterweight bin can be changed to adapt to different weight distribution requirements and improve the stability and adaptability of the foundation under different working conditions.

[0045] It should be noted that the counterweight bin 2 can be set on the inner and outer sides of the cylinder wall 1 at the same time, that is, two inner and outer counterweight bins 2 are set at the same time. At this time, corresponding counterweight holes 6 are set on the cover plate 5 to adapt to occasions with larger counterweights and improve the stability and adaptability of the foundation under different working conditions.

[0046] It should be noted that the counterweight hole 6 can be designed to have different sizes according to different weight-increasing materials. For example, when the counterweight material is gravel, the diameter of the counterweight 6 can be enlarged to facilitate the gravel to flow smoothly into the counterweight bin 2 and reduce blockage.

[0047] The embodiment of the present application provides a self-sinking foundation without soil excavation. Since the upper and lower ends of the cylinder wall are open, a counterweight bin is arranged on the upper part of the side wall of the cylinder wall. During the construction process, by filling the counterweight bin with weight-increasing materials, the weight of the counterweight bin itself is used to drive the cylinder wall to sink gradually. This foundation form can sink adaptively according to the characteristics of the stratum in various soft strata, without the need for soil excavation operations, effectively avoiding many disadvantages caused by soil excavation in traditional foundation construction, greatly reducing the consumption of manpower, material and financial resources, greatly simplifying the construction process, significantly reducing the difficulty of construction and shortening the construction period. In addition, the method of not taking soil reduces the generation of construction noise and dust pollution from the source, which is more environmentally friendly. At the same time, the foundation cuts into the soil through soil plug balancing feet at different angles, and uses the soil plug effect generated by cutting into the soil to provide bearing capacity for the foundation.

[0048] The embodiment of the present application provides a self-sinking foundation without soil excavation. Since the upper and lower ends of the cylinder wall 1 are open, a counterweight bin 2 is arranged on the upper part of the side wall 3 of the cylinder wall 1. During the construction process, by filling the counterweight bin 2 with weight-increasing materials, the weight of the counterweight bin 2 is used to drive the cylinder wall 1 to sink gradually. This foundation form can sink adaptively according to the characteristics of the stratum in various soft strata, without the need for soil excavation operations, effectively avoiding many disadvantages caused by soil excavation in traditional foundation construction, greatly reducing the consumption of manpower, material and financial resources, greatly simplifying the construction process, significantly reducing the difficulty of construction and shortening the construction period. In addition, the soil excavation-free method reduces the generation of construction noise and dust pollution from the source, and is more environmentally friendly. At the same time, the foundation cuts into the soil through soil plug balancing feet at different angles, and uses the soil plug effect generated by cutting into the soil to provide bearing capacity for the foundation.

[0049] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0050] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A self-sinking foundation without soil excavation, characterized in that: It includes: A cylindrical wall (1) with openings at upper and lower ends; The counterweight bin (2) is arranged on the upper part of the cylinder wall (1) and is used for filling the weight-increasing material.

2. The self-sinking foundation without soil excavation as claimed in claim 1, characterized in that: The bottom of the cylinder wall (1) is provided with an inclination angle, the angle between the bottom outer wall of the cylinder wall (1) and the horizontal direction is 60-75 degrees, and the angle between the bottom inner wall of the cylinder wall (1) and the horizontal direction is 45-60 degrees.

3. The self-sinking foundation without soil excavation as claimed in claim 1, characterized in that: The counterweight bin (2) comprises a side wall (3) and a bottom plate (4), which together with the cylinder wall (1) enclose the counterweight bin (2).

4. The self-sinking foundation without soil extraction as claimed in claim 3, characterized in that: The diameter of the side wall (3) is smaller than the diameter of the cylinder wall (1).

5. The self-sinking foundation without soil excavation as claimed in claim 3, characterized in that: The diameter of the side wall (3) is greater than the diameter of the cylinder wall (1).

6. The self-sinking foundation without soil extraction as claimed in claim 3, characterized in that: The cylinder wall (1) and the side wall (3) are a combination of the same or different shapes.

7. The self-sinking foundation without soil extraction as claimed in claim 3, characterized in that: A plurality of partition walls (8) are evenly arranged in the vertical direction in the counterweight bin (2).

8. The self-sinking foundation without soil extraction as claimed in claim 3, characterized in that: The counterweight bin (2) is provided with a cover plate (5), and the cover plate (5) is provided with a plurality of counterweight holes (6).

9. The self-sinking foundation without soil extraction as claimed in claim 8, characterized in that: The cover plate (5) is provided with a communicating hole (7), and the communicating hole (7) is connected to the bottom of the cylinder wall (1).

10. The self-sinking foundation without soil extraction as claimed in claim 1, characterized in that: The weight-increasing material is a combination of one or more materials including crushed stone, sand, soil and water.

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