A deep foundation pit support structure

Abstract

The present application relates to a deep foundation pit support structure, which includes a plurality of first support columns, a support wall, a second support column, and a third support column. The second support columns are connected end to end to form a regular N-gon, and the third support columns are connected end to end to form a regular N-gon. The regular N-gon formed by the second support columns and the regular N-gon formed by the third support columns are parallel to each other and not coplanar. When viewed from above, the center of the inscribed circle of the regular N-gon formed by the second support columns overlaps with the center of the inscribed circle of the regular N-gon formed by the third support columns. A first support column is fixedly connected between the end of each second support column and the end of an adjacent third support column. A support wall is fixedly connected within the triangular space formed by the second support column and the two first support columns connected to its ends. A support wall is fixedly connected within the triangular space formed by the third support column and the two first support columns connected to its ends. The present application has the effect of improving the torque resistance of the deep foundation pit support structure.

Description

Technical Field

[0001] The present application relates to the field of supporting structures, and in particular to a deep foundation pit supporting structure. Background Art

[0002] At present, with the development of the economy and the progress of the times, more and more high-rise buildings need to be built; and in the construction process of high-rise buildings, it is necessary to dig deep foundations, so the support structure of deep foundation pits is widely used in the construction industry.

[0003] In the related art, the deep foundation pit support structure includes a number of supporting columns and supporting walls, wherein the supporting walls are arranged around the deep foundation in a top-down view, and supporting columns are connected between two adjacent supporting walls, and the supporting columns and supporting walls are arranged perpendicular to the horizontal plane; vibrations will be generated during the construction process, and the soil or rocks around the deep foundation pit may loosen during the vibration process. The loosened soil or rocks are blocked by the supporting walls and will not fall into the deep foundation, ultimately providing the deep foundation with a safe and stable construction environment.

[0004] Regarding the above-mentioned related technologies, the deep foundation pit support structure has poor anti-torque capacity. In some cases with more complex ground conditions, the vibration during construction may cause the soil or rock around the deep foundation to collapse, and generate a large torque on the support column, causing the support column to loosen or even collapse. Summary of the Invention

[0005] In order to improve the anti-torque capacity of a deep foundation pit support structure, the present application provides a deep foundation pit support structure.

[0006] The deep foundation pit support structure provided in this application adopts the following technical solution:

[0007] A deep foundation pit support structure, comprising a plurality of first support columns, a support wall, a second support column, and a third support column, wherein the centerline of any second support column is not parallel to the centerlines of all the third support columns, the second support columns are connected end to end to form a regular N-gon, the third support columns are connected end to end to form a regular N-gon, and the regular N-gon formed by the second support columns and the regular N-gon formed by the third support columns are parallel to each other and not coplanar;

[0008] In a top view, the center of the inscribed circle of the regular N-gon formed by the second support columns overlaps with the center of the inscribed circle of the regular N-gon formed by the third support columns, and a first support column is fixedly connected between the end of each second support column and the ends of two adjacent third support columns;

[0009] A supporting wall is fixedly connected to the triangular space surrounded by each of the second support columns and the two first support columns connected to its ends, and a supporting wall is fixedly connected to the triangular space surrounded by each of the third support columns and the two first support columns connected to its ends.

[0010] By adopting the above technical scheme, the first support column, the second support column and the third support column form a number of interconnected triangular skeletons around the side of the deep foundation pit support structure. The first support column, the second support column and the third support column have extremely strong tensile, compressive and torque resistance. Therefore, the deep foundation pit support structure is not easy to deform in a working environment with complex terrain conditions; the side of the supporting wall is fixedly connected to the two first support columns and one second support column, or the side of the supporting wall is fixedly connected to the two first support columns and one third support column, so the end faces of all the supporting walls are not perpendicular to the same plane. When the deep foundation pit support structure is subjected to torque, the supporting wall can be supported by the surrounding support from different directions, and the overall structure is more stable; in summary, this scheme improves the torque resistance of the deep foundation pit support structure.

[0011] Preferably, in a top view, the perpendicular bisector of the sides of the regular N-gon formed by the second support columns overlaps with the vertices of the regular N-gon formed by the third support columns.

[0012] By adopting the above technical solution, the supporting wall is an isosceles triangle, and the force transmission between the supporting wall and the two adjacent supporting walls is more uniform, further improving the torque resistance of the deep foundation pit support structure.

[0013] Preferably, the second support column is arranged above the third support column, and in a top view, the sides of the regular N-gon formed by the second support columns overlap with the vertices of the regular N-gon formed by the third support columns.

[0014] By adopting the above technical solution, part of the supporting wall is arranged perpendicular to the horizontal plane, and part of the supporting wall is arranged inclined relative to the horizontal plane. The regular N-gon surrounded by the third support columns is the bottom of the deep foundation, and the regular N-gon surrounded by the second support columns is the bottom of the deep foundation. When viewed from a bird's-eye view, the bottom of the deep foundation is entirely within the top of the deep foundation, which increases the construction area while improving the torque resistance of the deep foundation pit support structure. The inclined supporting wall facilitates the transportation of materials during construction.

[0015] Preferably, the length of the second support column is equal to the length of the third support column.

[0016] By adopting the above technical solution, all supporting walls are of equal size, and the force between adjacent supporting walls is transmitted more evenly, further improving the torque resistance of the deep foundation pit support structure.

[0017] Preferably, there are a certain number of regular N-gons formed by the second support columns and a certain number of regular N-gons formed by the third support columns. In the vertical direction, the regular N-gons formed by the second support columns and the regular N-gons formed by the third support columns are alternately arranged at equal intervals.

[0018] By adopting the above technical solution, the deep foundation pit support structure can vertically divide the deep foundation into several layers, and the distance between two adjacent layers is reduced, which can further improve the torque resistance of the deep foundation pit support structure; at the same time, the above structure can be suitable for deep foundations with a deeper depth and a smaller construction area.

[0019] Preferably, the first support column, the second support column and the third support column are equal in length.

[0020] By adopting the above technical solution, the supporting wall is an equilateral triangle, and the force between adjacent supporting walls is transmitted more evenly, further improving the torque resistance of the deep foundation pit support structure.

[0021] Preferably, an installation groove is provided on the end surface of the support wall facing the inner side of the deep foundation pit, and the installation groove is arranged along the three sides of the support wall. The support wall is connected to the first support column, the second support column or the third support column at the installation groove.

[0022] By adopting the above technical solution, when the supporting wall is connected to the first supporting column, the second supporting column or the third supporting column, the inner end face of the supporting wall facing the deep foundation pit is against the first supporting column, the second supporting column or the third supporting column, thereby increasing the overall stability of the supporting wall when it is subjected to external pressure.

[0023] Preferably, a number of reinforcing rib structures are provided in the supporting wall, and the reinforcing rib structures are arranged parallel to the side surfaces of the supporting wall. The reinforcing rib structures in the same supporting wall are in the form of a triangular mesh arranged equidistantly, and the two ends of the reinforcing rib structure are respectively fixedly connected to the first support column, the second support column or the third support column.

[0024] By adopting the above technical solution, under the action of the reinforcement structure, the supporting wall can receive a more uniform support force. At the same time, the reinforcement structure can better transmit the force between the first support column, the second support column and the third support column, further improving the compressive strength, tensile strength and torque resistance of the deep foundation pit support structure.

[0025] Preferably, the two intersecting reinforcing rib structures are fixedly connected.

[0026] By adopting the above technical solution, force can be directly transmitted between the reinforcement structures, making the deep foundation pit support structure more stable.

[0027] Preferably, a collar is provided at the end of the reinforcing rib structure, and the collar is sleeved on the first support column, the second support column or the third support column.

[0028] By adopting the above technical solution, the force transmission effect between the reinforcing rib structure and the first support column, the second support column or the third support column will be better, making the deep foundation pit support structure more stable.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. Improve the anti-torque capacity of deep foundation pit support structure;

[0031] 2. Facilitate the transportation of materials during construction;

[0032] 3. Increase the overall stability when the supporting wall is subjected to external pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a top view schematic diagram of the first support column, the support wall, the second support column and the third support column after being connected in Example 1.

[0034] Figure 2 It is a side view schematic diagram of the deep foundation pit support structure in Example 1.

[0035] Figure 3 It is a schematic diagram of the supporting wall facing the end face of the deep foundation pit.

[0036] Figure 4 It is a schematic diagram of the arrangement of the reinforcement structure.

[0037] Figure 5 It is a top view schematic diagram of the first support column, the support wall, the second support column and the third support column after being connected in Example 2.

[0038] Figure 6 It is a side view schematic diagram of the deep foundation pit support structure in Example 2.

[0039] Figure 7 It is a top view schematic diagram of the deep foundation pit support structure in Example 3.

[0040] Explanation of the accompanying drawings: 1. First support column; 2. Support wall; 21. Installation groove; 22. Reinforcement rib structure; 3. Second support column; 4. Third support column. DETAILED DESCRIPTION

[0041] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0042] The embodiment of the present application discloses a deep foundation pit support structure.

[0043] Example 1

[0044] Reference Figure 1 A deep foundation pit support structure includes a first support column 1, a support wall 2, a second support column 3 and a third support column 4, wherein the first support column 1, the second support column 3 and the third support column 4 are connected to each other to form the skeleton of the deep foundation support structure, the first support column 1, the second support column 3 and the third support column 4 are used to fix the support wall 2, the end face of the support wall 2 is triangular, and the support wall 2 is arranged around the side of the deep foundation pit support structure and wraps the deep foundation pit support structure.

[0045] Reference Figure 1 and 2 Specifically, the first support column 1, the second support column 3 and the third support column 4 are all cylindrical columns, and the second support column 3 and the third support column 4 are equal in length; in this embodiment, the length of the first support column 1 is equal to the length of the second support column 3. In this case, the end face of the supporting wall 2 is an equilateral triangle. When subjected to external force, the force on each side is more uniform, and the overall structure is more stable; in other embodiments, the length of the first support column 1 is L1, the length of the second support column 3 is L2, and 0.7L2<L1<1.5L2.

[0046] Reference Figure 1 The number of first support columns 1 is thirty-two, the number of second support columns 3 is sixteen, and the number of third support columns 4 is eight; the sixteen second support columns 3 are divided into two groups, each group has eight second support columns 3, and the eight second support columns 3 in the same group are fixedly connected end to end. After the connection, the center lines of the eight second support columns 3 in the same group form a regular octagon; the regular octagon formed by one of the second support columns 3 is arranged to coincide with the ground, and the regular octagon formed by the other second support columns 3 is arranged to coincide with the bottom of the deep foundation. The regular octagons formed by the two second support columns 3 are parallel to each other, and when viewed from above, the regular octagons formed by the two second support columns 3 overlap.

[0047] Reference Figure 1 and 2 Specifically, the eight third support columns 4 are fixedly connected end to end. After the connection, the center lines of the eight third support columns 4 form a regular octagon. The regular octagon formed by the center lines of the third support columns 4 is parallel to the regular octagon formed by the center lines of the second support columns 3. In the vertical direction, the regular octagon formed by the center lines of the third support columns 4 is placed in the middle of the regular octagon formed by the center lines of the two second support columns 3. When viewed from above, the midpoint of the regular octagon formed by the third support columns 4 overlaps with the midpoint of the regular octagon formed by the second support columns 3, and the line connecting the center point of the inscribed circle of the regular octagon formed by the third support columns 4 to the vertex of the regular octagon formed by the third support columns 4 is perpendicular to one side of the regular octagon formed by the second support columns 3.

[0048] Reference Figure 1 and 2One end of the first support column 1 is fixedly connected to the vertex of the regular octagon formed by the second support columns 3, and the other end of the first support column 1 is fixedly connected to the vertex of the regular octagon formed by the third support columns 4. Any second support column 3 is connected end to end with two first support columns 1 to form an equilateral triangle; any third support column 4 is respectively connected with the four first support columns 1 to form two equilateral triangles, wherein the center line of the third support column 4 is also the side of the two equilateral triangles.

[0049] Reference Figure 1 and 2 , through the above structure, the second support columns 3 support each other in the horizontal direction, and the third support columns 4 support each other in the horizontal direction, the first support column 1 is connected between the second support column 3 and the third support column 4, and each second support column 3 can be subjected to the forces from different directions of the two first support columns 1, and each third support column 4 can be subjected to the forces from different directions of the four first support columns 1. At the same time, each second support column 3 or third support column 4 forms an equilateral triangle with the first support column 1; no matter which of the first support column 1, the second support column 3 or the third support column 4 is subjected to the action of external force, the first support column 1, the second support column 3 or the third support column 4 connected thereto will provide it with corresponding forces in different directions, making it not easy to loosen and the whole body not easy to deform; therefore, the skeleton structure formed by the connection of the first support column 1, the second support column 3 and the third support column 4 has extremely strong compressive resistance, tensile resistance and torque resistance.

[0050] Reference Figure 2 and 3 Specifically, the end face of the supporting wall 2 is an equilateral triangle, and the shape of the end face of the supporting wall 2 is adapted to the equilateral triangle formed by the center line of the first supporting column 1 and the center line of the second supporting column 3. A mounting groove 21 adapted to the outer shape of the first supporting column 1 is provided on one end face of the supporting wall 2. The mounting groove 21 is provided at the connection between the end face and the side face of the supporting wall 2. The number of mounting grooves 21 on each supporting wall 2 is three, and the mounting grooves 21 on the same supporting wall 2 are connected to each other end to end; the end face of the supporting wall 2 with the mounting groove 21 faces the deep foundation, and the other end face of the supporting wall 2 faces the outside of the deep foundation. The supporting wall 2 is fixedly connected to the first supporting column 1, the second supporting column 3 or the third supporting column 4 at the mounting groove 21.

[0051] Reference Figure 4In addition, a number of reinforcing rib structures 22 are provided inside the installation wall. The reinforcing rib structures 22 are steel bars. The reinforcing rib structures 22 are arranged parallel to the side of the end face of the installation wall. The reinforcing rib structures 22 are evenly arranged triangular mesh structures inside the installation wall. The two intersecting reinforcing rib structures 22 are fixedly connected by steel wire tying or welding; both ends of the reinforcing rib structure 22 are provided with rings adapted to the outer shape of the first support column 1, the second support column 3 or the third support column 4, and the rings are provided on the first support column 1, the second support column 3 or the third support column 4, and the reinforcing rib structure 22 is fixedly connected to the first support column 1, the second support column 3 or the third support column 4 through the rings.

[0052] In summary, under the support of the skeleton composed of the first support column 1, the second support column 3 and the third support column 4, the support wall 2 is fixed very firmly. At the same time, when the outer end face of the support wall 2 is subjected to pressure from the inner side of the deep foundation, the support wall 2 can receive the support force of the first support column 1, the second support column 3 or the third support column 4 through the installation groove 21. At the same time, the reinforcing rib structure 22 can also provide a stable and uniform support force for the support wall 2, thereby making the deep foundation pit support structure more stable. In addition, the end faces of all the support walls 2 are not perpendicular to the same plane. When the deep foundation pit support structure is subjected to torque, the support wall 2 can receive support forces from different directions from the surrounding supports, making the overall structure more stable. The reinforcing rib structure 22 can make the force transmission between the first support column 1, the second support column 3 and the third support column 4 more uniform, further improving the anti-torque capacity of the deep foundation pit support structure. Therefore, this solution has extremely strong compressive resistance, tensile resistance and anti-torque capacity.

[0053] The implementation principle of Example 1 is: a skeleton composed of the first support column 1, the second support column 3 and the third support column 4, the skeleton includes several tripods, and the overall compression, tension and torque resistance are extremely strong; the support wall 2 is supported by the skeleton and forms several connected equilateral triangles along the side of the deep foundation, and the end faces of two adjacent support walls 2 are not parallel. Therefore, when the deep foundation pit support structure is subjected to torque, the support wall 2 can receive support forces from different directions of the surrounding supports, and the overall structure is more stable. At the same time, under the action of the reinforcing rib structure 22, the support wall 22 is less likely to deform when subjected to torque; in summary, this scheme improves the compression, tension and torque resistance of the deep foundation pit support structure.

[0054] Example 2

[0055] Reference Figure 5 and 6 The difference between this embodiment and embodiment 1 is that the number of first support columns 1 is twenty-four, the number of second support columns 3 is twelve, and the number of third support columns 4 is six. The center lines of the second support columns 3 form a regular hexagon, and the center lines of the third support columns 4 form a regular hexagon.

[0056] Example 3

[0057] Reference Figure 7 The difference between this embodiment and embodiment 1 is that the number of first support columns 1 is sixteen, the number of second support columns 3 is eight, and the number of third support columns 4 is eight. The vertical projection of the vertices of the regular octagon formed by the center lines of the third support columns 4 is located at the midpoints of the sides of the regular octagon formed by the center lines of the second support columns 3. The regular octagon formed by the second support columns 3 coincides with the ground, and the regular octagon formed by the third support columns 4 coincides with the bottom of the deep foundation.

[0058] The implementation principle of Example 3 is: there are a total of sixteen installation walls, eight of which are arranged perpendicular to the horizontal plane, and the other eight are arranged at an angle. While improving the torque resistance of the deep foundation pit support structure, the upper end surface of the inclined installation wall can be equipped with a conveyor belt for transporting materials.

[0059] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A deep foundation pit support structure, characterized by: The invention comprises a plurality of first support columns (1), a support wall (2), a second support column (3) and a third support column (4), wherein the center line of any second support column (3) is not parallel to the center lines of all the third support columns (4), the second support columns (3) are connected end to end to form a regular N-gon, the third support columns (4) are connected end to end to form a regular N-gon, and the regular N-gon formed by the second support columns (3) and the regular N-gon formed by the third support columns (4) are parallel to each other and not coplanar; In a top view, the center of the inscribed circle of the regular N-gon formed by the second support columns (3) overlaps with the center of the inscribed circle of the regular N-gon formed by the third support columns (4), and a first support column (1) is fixedly connected between the end of each second support column (3) and the ends of two adjacent third support columns (4); A supporting wall (2) is fixedly connected in a triangular space enclosed by each of the second supporting columns (3) and the two first supporting columns (1) connected to the ends thereof, and a supporting wall (2) is fixedly connected in a triangular space enclosed by each of the third supporting columns (4) and the two first supporting columns (1) connected to the ends thereof.

2. A deep foundation pit support structure according to claim 1, characterized in that: In a top view, the perpendicular bisector of the side of the regular N-gon formed by the second support columns (3) overlaps with the vertex of the regular N-gon formed by the third support columns (4).

3. A deep foundation pit support structure according to claim 2, characterized in that: The second support column (3) is arranged above the third support column (4); in a top view, the sides of the regular N-gon formed by the second support column (3) overlap with the vertices of the regular N-gon formed by the third support column (4).

4. The deep foundation pit support structure according to claim 2, characterized in that: The length of the second supporting column (3) is equal to the length of the third supporting column (4).

5. The deep foundation pit support structure according to claim 1, characterized in that: The regular N-gons formed by the second support columns (3) and the regular N-gons formed by the third support columns (4) are of a certain number, and in the vertical direction, the regular N-gons formed by the second support columns (3) and the regular N-gons formed by the third support columns (4) are alternately arranged at equal intervals.

6. The deep foundation pit support structure according to claim 5, characterized in that: The first supporting column (1), the second supporting column (3) and the third supporting column (4) are of equal length.

7. The deep foundation pit support structure according to claim 1, characterized in that: A mounting groove (21) is provided on the end surface of the supporting wall (2) facing the inner side of the deep foundation pit. The mounting groove (21) is provided along three side edges of the supporting wall (2). The supporting wall (2) is connected to the first supporting column (1), the second supporting column (3) or the third supporting column (4) at the mounting groove (21).

8. The deep foundation pit support structure according to claim 1, characterized in that: A plurality of reinforcing rib structures (22) are provided in the supporting wall (2), wherein the reinforcing rib structures (22) are arranged parallel to the side surfaces of the supporting wall (2), and the reinforcing rib structures (22) in the same supporting wall (2) are arranged in a triangular mesh shape with equal spacing, and the two ends of the reinforcing rib structures (22) are respectively fixedly connected to the first supporting column (1), the second supporting column (3) or the third supporting column (4).

9. The deep foundation pit supporting structure according to claim 8, characterized in that: The two intersecting reinforcing rib structures (22) are fixedly connected.

10. The deep foundation pit supporting structure according to claim 8, characterized in that: The end of the reinforcing rib structure (22) is provided with a collar, and the collar is sleeved on the first support column (1), the second support column (3) or the third support column (4).

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