Deep foundation pit supporting structure of buried sewage treatment plant based on double-row piles

Abstract

This invention relates to a deep foundation pit support structure for underground sewage treatment plants based on double-row piles, comprising a first support component, a second support component, a support component, a cross brace component, and a cable assembly. The first support component is disposed around the perimeter of the deep foundation pit, and the first and second support components are staggered. The support component is disposed between the first and second support components, and the cross brace component is disposed between the opposing first support components. The cable assembly is also connected to the outer side of the second support component, and the cable assembly extends outward to the anchor pier. This invention not only stabilizes the foundation pit support of underground sewage treatment plants, facilitating construction, but also reduces the difficulty of foundation pit support construction.

Description

Technical Field

[0001] This invention relates to the field of deep foundation pit support structure technology based on double-row piles, and in particular to a deep foundation pit support structure for buried sewage treatment plants based on double-row piles. Background Technology

[0002] An underground wastewater treatment plant is a type of facility that concentrates all or most of the main wastewater treatment structures within a single underground enclosure, significantly reducing the footprint and minimizing the impact on the surrounding environment. It treats wastewater through separation, decomposition, and adsorption, transforming it into environmentally friendly and safe substances that meet discharge standards or are recyclable. Underground wastewater treatment plants are primarily suitable for treating domestic and industrial wastewater from cities, industrial and mining enterprises, and can also effectively address surface water pollution problems.

[0003] Land supply in large cities is gradually decreasing, and underground sewage treatment plants are a more ideal sewage treatment method for densely populated areas. However, the construction of underground sewage treatment plants in cities is challenging due to narrow construction areas, high groundwater levels, and loose or easily liquefied soil, which makes the construction of foundation pit support difficult.

[0004] Therefore, those skilled in the art are dedicated to developing a deep foundation pit support structure for buried sewage treatment plants based on double-row piles, which can not only stabilize the foundation pit support of buried sewage treatment plants and facilitate construction, but also reduce the difficulty of foundation pit support construction. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a deep foundation pit support structure for underground sewage treatment plants based on double-row piles, which can not only stabilize the foundation pit support of underground sewage treatment plants and facilitate construction, but also reduce the difficulty of foundation pit support construction.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a deep foundation pit support structure for buried sewage treatment plants based on double-row piles, including a first support component, a second support component, a support component, a cross brace component and a cable component;

[0007] The first support component is located outside the deep foundation pit. The first support component and the second support component are staggered, and the support component is provided between the first support component and the second support component. The cross brace component is provided between the opposite first support components. The cable component is also connected to the outside of the second support component, and the cable component extends outward to the anchor block.

[0008] The beneficial effects of the present invention are: by setting a support component between the staggered first support component and the second support component, the support strength of the first support component and the second support component is increased. At the same time, the cross brace component and the cable component can effectively prevent the first support component and the second support component from overturning, thereby further improving the support stability.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the sidewall of the deep foundation pit is provided with a concrete layer, and the first support component is located within the concrete layer;

[0011] A backfill layer is provided between the first support component and the second support component.

[0012] The beneficial effects of adopting the above-mentioned further scheme are that the concrete layer forms a supporting wall for the first support component, which is conducive to subsequent construction in the deep foundation pit; the backfill layer improves the support strength of the second support component.

[0013] Furthermore, the support assembly includes a support member, which is arc-shaped, and the two ends and the arched portion of the support member abut against the first support assembly and the second support assembly, respectively.

[0014] The beneficial effect of adopting the above-mentioned further solution is that the support member improves the support strength of the first support assembly and the second support assembly.

[0015] Furthermore, the first support component includes a first support column, and multiple first support columns are spaced apart. The second support component includes a second support column, and multiple second support columns are spaced apart. The first support columns and the second support columns are staggered. The length of the second support column is 1.5 to 2.5 times the length of the first support column. A cap beam is provided on the upper side of the first support column and the second support column.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that the cap beam increases the connection strength between the first support column and the second support column, and utilizes the plane constructed on the cap beam.

[0017] Furthermore, the cross bracing assembly includes a support beam, the two ends of which respectively abut against the first support assembly disposed opposite to it;

[0018] The multiple supporting beams are located on the same vertical line.

[0019] The advantage of adopting the above-mentioned further solution is that it supports the crossbeam to prevent the first support component from overturning.

[0020] Furthermore, a sealing layer is provided at the bottom of the deep foundation pit.

[0021] The beneficial effect of adopting the above-mentioned further scheme is that the sealing layer reduces the infiltration of groundwater into the deep foundation pit.

[0022] Furthermore, the outer layer of the second support component is provided with a water-stop curtain.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the water-stopping curtain reduces the erosion of the second support component by groundwater.

[0024] Furthermore, a right-angle support assembly is provided at the corner of the deep foundation pit.

[0025] The beneficial effect of adopting the above-mentioned further solution is that the right-angle support component improves the support strength at the corner.

[0026] Furthermore, the cable assembly includes an anchor cable assembly, one end of which is connected to the second support assembly and the other end of which is connected to the anchor block.

[0027] The beneficial effect of adopting the above-mentioned further solution is that the anchor cable assembly further increases the support strength of the second support assembly.

[0028] Furthermore, the anchor cable assembly includes an anchor cable, an anchor cable protective sleeve is provided on the outer layer of the anchor cable, an isolation bracket is provided on the outer layer of the anchor cable protective sleeve, and a grouting pipe is provided between the isolation bracket and the anchor cable protective sleeve.

[0029] The beneficial effect of adopting the above-mentioned further solutions is that by setting a protective sleeve and isolation support on the outer layer of the anchor cable and grouting, the service life of the anchor cable is extended. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a planar structure according to a specific embodiment of the present invention;

[0031] Figure 2 This is a side view of a specific embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of an anchor cable assembly structure according to a specific embodiment of the present invention;

[0033] Figure 4 This is a cross-sectional view of an anchor cable assembly according to a specific embodiment of the present invention.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1. First support assembly; 2. Second support assembly; 3. Support assembly; 4. Cross brace assembly; 5. Cable assembly; 6. Deep foundation pit; 7. Anchor pier; 8. Concrete layer; 9. Backfill layer; 10. Support component; 11. First support column; 12. Second support column; 13. Crown beam; 14. Support beam; 15. Sealing layer; 16. Right-angle support assembly; 17. Anchor cable assembly; 18. Anchor cable; 19. Anchor cable protective sleeve; 20. Isolation bracket; 21. Grouting pipe. Detailed Implementation

[0036] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0037] In the description of this invention, it should be understood that the terms "center," "length," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "inner," "outer," "circumferential," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the system or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a deep foundation pit support structure for an underground sewage treatment plant based on double-row piles includes a first support component 1, a second support component 2, a support component 3, a cross brace component 4, and a cable component 5. The first support component 1 is located around the deep foundation pit 6. The first support component 1 and the second support component 2 are staggered, and a support component 3 is provided between the first support component 1 and the second support component 2. A cross brace component 4 is provided between the oppositely arranged first support components 1. A cable component 5 is also connected to the outside of the second support component 2, and the cable component 5 extends outward to the anchor 7.

[0041] In this invention, by setting a support component 3 between the staggered first support component 1 and the second support component 2, the support strength of the first support component 1 and the second support component 2 is increased. At the same time, the cross brace component 4 and the cable component 5 can effectively prevent the first support component 1 and the second support component 2 from overturning, further improving the support stability.

[0042] like Figure 1 , Figure 2 As shown, in some embodiments, the sidewalls of the deep foundation pit 6 are provided with a concrete layer 8, and the first support component 1 is located within the concrete layer 8. The concrete layer 8 encloses the first support component 1 and forms a retaining wall, which facilitates subsequent construction within the deep foundation pit 6. A backfill layer 9 is provided between the first support component 1 and the second support component 2, which increases the support strength of the second support component 2. A sealing layer 15 is provided at the bottom of the deep foundation pit 6 to reduce groundwater infiltration into the deep foundation pit 6. A right-angle support component 16 is provided at the corner of the deep foundation pit 6 to increase the support strength at the corner of the deep foundation pit 6.

[0043] In another embodiment, the support component 3 includes a support member 10, which is arc-shaped. The two ends and the arched portion of the support member 10 abut against the first support component 1 and the second support component 2, respectively. The support member 10 integrates the first support component 1 and the second support component 2, enhancing the support strength. To reduce the erosion of the second support component 2 by groundwater, a water-stop curtain is provided on the outer layer of the second support component 2. The water-stop curtain can be made of geotextile.

[0044] like Figure 1 , Figure 2 and Figure 3As shown, the first support component 1 includes first support columns 11, with multiple first support columns 11 spaced apart. The distance between two adjacent first support columns 11 is determined based on the soil type and moisture content. The second support component 2 includes second support columns 12, with multiple second support columns 12 spaced apart. The distance between two adjacent second support columns 12 is the same as the distance between two adjacent first support columns 11. The first support columns 11 and second support columns 12 are staggered, with each second support column 12 located between two first support columns 11. The length of the second support column 12 is 1.5 to 2.5 times the length of the first support column 11. The second support column 12 is longer than the first support column 11, which helps to improve the support strength. A capping beam 13 is provided on the upper side of the first support columns 11 and the second support columns 12. The capping beam 13 is used to connect the first support columns 11 and the second support columns 12, and also facilitates the construction of a platform on the capping beam 13.

[0045] Specifically, the cross bracing assembly 4 includes a supporting crossbeam 14, with both ends of the supporting crossbeam 14 abutting against the oppositely arranged first support assembly 1. Multiple supporting crossbeams 14 are located on the same vertical line. Since the underground sewage treatment plant has multiple sewage treatment tanks (including aeration tanks, anaerobic tanks, flocculation tanks, sedimentation tanks, etc.) arranged horizontally, setting up supporting crossbeams 14 between two adjacent sewage treatment tanks helps to increase the support strength of the deep foundation pit 6, and also facilitates the subsequent construction of other buildings in the underground sewage treatment plant as load-bearing crossbeams.

[0046] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in another embodiment, the cable assembly 5 includes an anchor cable assembly 17, one end of which is connected to the second support assembly 2, and the other end is connected to the anchor block 7. Specifically, the anchor cable assembly 17 includes an anchor cable 18, which is made of multiple stranded cables to extend the service life of the anchor cable 18. An anchor cable protective sleeve 19 is provided on the outer layer of the anchor cable 18, and an isolation bracket 20 is provided on the outer layer of the anchor cable protective sleeve 19. A grouting pipe 21 is provided between the isolation bracket 20 and the anchor cable protective sleeve 19.

[0047] Construction steps of this invention:

[0048] S1. Survey the soil and buildings near the underground sewage treatment plant where construction is required;

[0049] S2. Construct the second support component 2 and the first support component 1, and remove the soil between the first support component 1 and the second support component 2;

[0050] S3. After constructing the support assembly 3, construct the concrete layer 8;

[0051] S4. After constructing cable assembly 5, construct the topmost cross brace assembly 4;

[0052] S5. Excavate the deep foundation pit 6, and gradually construct the cross bracing components 4 during the excavation process, and backfill the excavated soil to the fill layer 9;

[0053] S6. After the deep foundation pit 6 has been excavated to a certain depth, construct the right-angle support component 16;

[0054] S7. After the deep foundation pit 6 is excavated to a suitable position, construct the sealing layer 15.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A deep foundation pit support structure for an underground sewage treatment plant based on double-row piles, characterized in that: It includes a first support assembly (1), a second support assembly (2), a support assembly (3), a cross brace assembly (4), and a cable assembly (5); The first support component (1) is set outside the deep foundation pit (6). The first support component (1) and the second support component (2) are staggered. The support component (3) is set between the first support component (1) and the second support component (2). The cross brace component (4) is set between the first support components (1) that are set opposite to each other. The cable component (5) is also connected to the outside of the second support component (2). The cable component (5) extends outward to the anchor pier (7). The support component (3) includes a support member (10), which is arc-shaped. The two ends and the arch of the support member (10) abut against the first support component (1) and the second support component (2), respectively.

2. The deep foundation pit support structure for underground sewage treatment plants based on double-row piles according to claim 1, characterized in that: The deep foundation pit (6) has a concrete layer (8) on its sidewall, and the first support component (1) is located inside the concrete layer (8). A backfill layer (9) is provided between the first support component (1) and the second support component (2).

3. The deep foundation pit support structure for underground sewage treatment plants based on double-row piles according to claim 1, characterized in that: The first support component (1) includes a first support column (11), and multiple first support columns (11) are spaced apart. The second support component (2) includes a second support column (12), and multiple second support columns (12) are spaced apart. The first support column (11) and the second support column (12) are staggered. The length of the second support column (12) is 1.5 to 2.5 times the length of the first support column (11). A cap beam (13) is provided on the upper side of the first support column (11) and the second support column (12).

4. The deep foundation pit support structure for underground sewage treatment plants based on double-row piles according to claim 1, characterized in that: The cross bracing assembly (4) includes a support beam (14), the two ends of which abut against the first support assembly (1) which is disposed opposite to it; The multiple supporting beams (14) are located on the same vertical line.

5. The deep foundation pit support structure for underground sewage treatment plants based on double-row piles according to any one of claims 1 to 4, characterized in that: The bottom of the deep foundation pit (6) is provided with a sealing soil layer (15).

6. The deep foundation pit support structure for buried sewage treatment plants based on double-row piles according to claim 5, characterized in that: The second support component (2) has a water-stop curtain on its outer layer.

7. The deep foundation pit support structure for underground sewage treatment plants based on double-row piles as described in claim 5, characterized in that: A right-angle support assembly (16) is provided at the corner of the deep foundation pit (6).

8. The deep foundation pit support structure for underground sewage treatment plants based on double-row piles according to claim 5, characterized in that: The cable assembly (5) includes an anchor cable assembly (17), one end of which is connected to the second support assembly (2) and the other end is connected to the anchor block (7).

9. The deep foundation pit support structure for underground sewage treatment plants based on double-row piles as described in claim 8, characterized in that: The anchor cable assembly (17) includes an anchor cable (18), the anchor cable (18) is provided with an anchor cable protective sleeve (19) on the outer layer, the anchor cable protective sleeve (19) is provided with an isolation bracket (20) on the outer layer, and a grouting pipe (21) is provided between the isolation bracket (20) and the anchor cable protective sleeve (19).

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