Anti-settling structure for buried drain pipe in reclamation area
By setting up structures such as fine soil layers, U-shaped hangers, and backfill soil layers in the pre-buried area of the buried drainage pipeline in the reclamation area, the problem of high construction cost of anti-settlement foundation for land reclamation drainage pipelines was solved, and the construction of an efficient and stable drainage system was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR EIGHT ENG DIV CORP LTD
- Filing Date
- 2025-05-14
- Publication Date
- 2026-06-12
AI Technical Summary
In existing technologies, the anti-settlement foundation treatment of buried drainage pipe networks in short-term land reclamation areas mainly adopts the replacement method or concrete cushion foundation, which leads to problems such as high construction costs, time and labor costs, and long construction period.
An anti-settlement structure is adopted, which consists of a fine soil layer, a U-shaped hanger, a backfill soil layer, and a burial layer in the pre-buried area of the drainage pipe. The hanger is fixedly connected to the floor slab reinforcement. Combined with components such as PVC gaskets, rigid sleeves, and asphalt hemp fiber, the pipe settlement and electrochemical corrosion are avoided.
It improves the reliability and stability of the drainage system, shortens the construction period, reduces construction costs, avoids pipe corrosion, and enhances economic benefits.
Smart Images
Figure CN224351366U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering technology, and specifically refers to an anti-settlement structure for buried drainage pipelines in reclaimed areas. Background Technology
[0002] Buried drainage pipe networks are a crucial component for ensuring the normal functionality of buildings. However, preventing settlement of buried drainage pipe networks has long been a major construction challenge, especially for short-term land reclamation areas. In short-term land reclamation areas, the foundation is mainly composed of sludge. Traditional methods for preventing pipe settlement primarily involve replacement or constructing a concrete cushion foundation. The replacement method requires removing all soft soil within the pipe foundation area and backfilling it with more stable soil and rocks. Due to the large area of the reclaimed land, the replacement method significantly increases construction costs and is time-consuming and labor-intensive. Constructing a concrete cushion foundation requires laying a sand cushion layer at least 0.05m thick on top. While this can improve the bearing capacity of the pipe foundation and reduce settlement, it involves large-volume concrete construction, resulting in a long construction period and high costs. Utility Model Content
[0003] The purpose of this utility model is to overcome the defects of the prior art and provide an anti-settlement structure for buried drainage pipelines in reclaimed areas. This solves the problem that the existing pipeline anti-settlement foundations mainly adopt the replacement method or the construction of concrete cushion foundations, which will greatly increase construction costs, time and labor, long construction period and high cost.
[0004] The technical solution to achieve the above objectives is:
[0005] This utility model provides an anti-settlement structure for buried drainage pipelines in reclamation areas, which is installed within the pre-buried area of the drainage pipeline. The anti-settlement structure includes:
[0006] A layer of fine soil is filled into the bottom of the pre-buried area;
[0007] At least two U-shaped hangers are spaced apart on the top surface of the fine soil layer, with their upper ends extending out of the embedded area and fixed to the floor slab reinforcement.
[0008] A backfill layer is placed in the pre-buried area, the backfill layer being located on top of the fine soil layer, the backfill layer partially burying the hanger and completely burying the drainage pipe; and
[0009] A buried layer is filled in the pre-embedded area, the buried layer being located on the top surface of the backfill soil layer and on the bottom surface of the floor slab reinforcement.
[0010] Furthermore, the burial layer includes: a foundation cushion layer located on top of the backfill soil layer and a cement mortar protective layer located on top of the foundation cushion layer.
[0011] Furthermore, a waterproof layer is provided between the base layer and the cement mortar protective layer.
[0012] Furthermore, the drainage pipe includes multiple pipe segments connected together, the spacing between two adjacent hangers is adapted to the length of the pipe segments, and the connection between two drainage pipes corresponds to the bottom of the hanger.
[0013] Furthermore, a PVC gasket is fixed at the bottom of the hanger. The PVC gasket is arc-shaped, and the connection between two adjacent drainage pipes abuts against the PVC gasket.
[0014] Furthermore, the drainage pipe is fitted with a rigid sleeve at the position where it passes through the brick formwork, and the rigid sleeve is fixed inside the brick formwork.
[0015] Furthermore, the space between the drainage pipe and the rigid sleeve is filled with asphalt-impregnated hemp fibers, and the two ends of the rigid sleeve are filled with sealant to seal the asphalt-impregnated hemp fibers.
[0016] Furthermore, a fixing layer is provided on the top surface of the fine soil layer along the entire length of the drainage pipe. The fixing layer buries the bottom of the hanger and partially buries the drainage pipe.
[0017] Furthermore, the hanger is made of galvanized angle steel.
[0018] Furthermore, the backfill soil used in the backfill layer is soft soil.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] 1) By setting up hangers and embedding the upper end of the hangers in the floor slab, and burying the hangers, the traditional concrete foundation is replaced. The hangers are fixedly connected to the floor slab reinforcement, which avoids large settlement of buried drainage pipes and improves the reliability and stability of the drainage system.
[0021] 2) Shortened construction period: No traditional pipeline foundation construction is required, reducing the consumption of equipment, labor and materials for soil replacement and concrete foundation construction, thus shortening the construction period and improving the economic benefits of the project.
[0022] 3) PVC gaskets are installed between the drainage cast iron pipe and the support to avoid electrochemical corrosion between the pipe and the support.
[0023] 4) A rigid sleeve is installed where the drainage pipe passes through the brick formwork, and asphalt hemp fiber is used to plug it, which can better protect the pipe and limit the pipe settlement. Attached Figure Description
[0024] Figure 1This is a schematic diagram of the hanger for the anti-settlement structure of buried drainage pipelines in reclaimed areas, as per this utility model.
[0025] Figure 2 This is a schematic diagram of the anti-settlement structure of the buried drainage pipeline in the reclamation area, which is a schematic diagram of the structure passing through the brick formwork.
[0026] Figure 3 This is a schematic diagram showing the anti-settlement structure for buried drainage pipelines in reclaimed areas after backfilling is completed.
[0027] Legend: 1. Hanger; 2. Drainage pipe; 3. Floor slab reinforcement; 4. PVC gasket; 5. Fine soil layer; 6. Fixing layer; 7. Backfill layer; 8. Foundation cushion layer; 9. Waterproof layer; 10. Cement mortar protective layer; 11. Brick formwork; 12. Concrete; 13. Rigid sleeve; 14. Asphalt hemp fiber; 15. Sealant. Detailed Implementation
[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0029] See Figure 1 This utility model provides an anti-settlement structure for buried drainage pipelines in reclaimed areas, solving the problems of existing pipeline anti-settlement foundations, which mainly rely on replacement or concrete pad foundations, significantly increasing construction costs, time-consuming, labor-intensive, and costly. 1) By setting up hangers and embedding the upper end of the hangers in the floor slab and burying the hangers, the traditional concrete foundation is replaced. The hangers are fixedly connected to the floor slab reinforcement, avoiding significant settlement of the buried drainage pipeline and improving the reliability and stability of the drainage system.
[0030] 2) Shortened construction period: No traditional pipeline foundation construction is required, reducing the consumption of equipment, labor and materials for soil replacement and concrete foundation construction, thus shortening the construction period and improving the economic benefits of the project.
[0031] 3) PVC gaskets are installed between the drainage cast iron pipe and the support to avoid electrochemical corrosion between the pipe and the support.
[0032] 4) A rigid sleeve is installed where the drainage pipe passes through the brick formwork, and asphalt hemp fiber is used to plug it, which can better protect the pipe and limit the pipe settlement.
[0033] The following description, in conjunction with the accompanying drawings, illustrates an anti-settlement structure for buried drainage pipelines in reclaimed areas according to this utility model.
[0034] See Figure 1 This image shows a schematic diagram of the hanger for the anti-settlement structure of buried drainage pipelines in reclaimed areas, as per this utility model. (See also...) Figure 3This image shows a schematic diagram of the anti-settlement structure for buried drainage pipelines in reclaimed areas after backfilling. The following is a combination of... Figure 1 and Figure 3 This invention describes an anti-settlement structure for buried drainage pipelines in reclaimed areas.
[0035] like Figure 1 and Figure 3 As shown, this utility model discloses an anti-settlement structure for buried drainage pipelines in reclaimed areas, located in the pre-buried area of the drainage pipeline 2. The anti-settlement structure includes:
[0036] 5. Fine soil layer filled at the bottom of the pre-buried area;
[0037] At least two U-shaped hangers 1 are arranged at intervals on the top surface of the fine soil layer 5, and their upper ends extend out of the embedded area and are fixed to the floor slab reinforcement 3;
[0038] Backfill soil layer 7 is buried in the pre-buried area. Backfill soil layer 7 is located on top of the fine soil layer 5. Backfill soil layer 7 partially buries the hanger 1 and completely buries the drainage pipe 2; and
[0039] The buried layer is filled in the pre-embedded area, and the buried layer is located on the top surface of the backfill soil layer 7 and on the bottom surface of the floor slab reinforcement 3.
[0040] The top of the hanger 1 is fixed to the floor slab reinforcement 3 by welding.
[0041] In one specific embodiment, the burial layer includes: a foundation cushion layer 8 located on the top surface of the backfill soil layer 7 and a cement mortar protective layer 10 located on the top surface of the foundation cushion layer 8.
[0042] In one specific embodiment, a waterproof layer 9 is provided between the base cushion layer 8 and the cement mortar protective layer 10.
[0043] In one specific embodiment, the drainage pipe 2 includes multiple pipe segments connected together, the spacing between two adjacent hangers 1 is adapted to the length of the pipe segments, and the connection point of the two drainage pipes 2 corresponds to the bottom of the hanger 1.
[0044] In one specific embodiment, a PVC gasket 4 is fixed to the bottom end of the hanger 1. The PVC gasket 4 is arc-shaped, and the connection points of two adjacent drainage pipes 2 abut against the PVC gasket 4. By setting the PVC gasket 4, on the one hand, the drainage pipes 2 can be limited to prevent them from rotating at the bottom of the hanger 1. On the other hand, since the drainage pipes 2 are mostly made of cast iron, the PVC gasket 4 isolates the drainage pipes 2 from the hanger 1, thereby preventing direct contact and electrochemical corrosion, which could lead to the hanger 1 losing its anti-settlement function and the drainage pipes 2 leaking. In addition, by placing the connection points of the drainage pipes 2 on the PVC gasket 4 at the bottom of the hanger 1, both ends of the same drainage pipe 2 can bear the same supporting force, thereby preventing different supporting forces at both ends from causing different degrees of settlement at both ends, which could lead to cracking at the connection points of the two drainage pipes 2.
[0045] Preferably, the connection between the drainage pipes 2 is a flange connection, that is, the connection between the drainage pipes 2 is achieved by flanges and bolts on them. This connection method is suitable for piping systems that need to be frequently disassembled, and has the characteristics of convenient disassembly and good sealing performance. In addition, a rubber sealing ring is installed at the connection for further waterproofing.
[0046] like Figure 2 As shown, in one specific embodiment, the drainage pipe 2 is fitted with a rigid sleeve 13 at the position where it passes through the brick formwork 11, and the rigid sleeve 13 is fixed inside the brick formwork 11.
[0047] In one specific embodiment, asphalt-impregnated hemp fibers 14 are filled between the drainage pipe 2 and the rigid sleeve 13, and sealant 15 is filled at both ends of the rigid sleeve 13 to seal the asphalt-impregnated hemp fibers 14. A brick formwork is a template made of standard bricks, which is then used for concrete pouring after reaching a certain strength. It is generally used for the side walls of basement slabs. Since the basement slab and its side walls require waterproofing so that the waterproofing can extend to the concrete side walls after the concrete is poured, ordinary formwork cannot achieve this. Furthermore, by setting up the rigid sleeve 13, asphalt-impregnated hemp fibers 14, and sealant 15, the rigid sleeve 13 is embedded within the brick formwork 11 to prevent it from affecting the overall waterproofing effect of the brick formwork 11. Simultaneously, when the drainage pipe 2 passes through the rigid sleeve 13, asphalt-impregnated hemp fibers 14 are filled into the gap between the rigid sleeve 13 and the drainage pipe 2, and then sealed with sealant 15, thereby sealing both ends of the rigid sleeve 13 and further improving the sealing effect of the brick formwork 11.
[0048] In one specific embodiment, a fixing layer 6 is provided on the top surface of the fine soil layer 5 along the entire length of the drainage pipe 2. The fixing layer 6 buries the bottom of the hanger 1 and partially buries the drainage pipe 2.
[0049] Preferably, the fixing layer 6 is made of crushed stone soil, with a width greater than that of the hanger 1 and a thickness of 50cm. It is gently tamped and compacted to fix the hanger 1 and the drainage pipe 2 and prevent them from shifting.
[0050] In one specific embodiment, the hanger 1 is made of galvanized angle steel.
[0051] Preferably, the galvanized angle steel has dimensions of 40*40*4mm, the spacing between two adjacent hangers 1 is 1m, and the overall width of hanger 1 is greater than the width of the drainage pipe 2, with a width difference of 10cm. The height of hanger 1 is designed to be 1.4m, the burial depth is 1m, the overall thickness of the floor slab reinforcement 3 is 0.15m, and the portion of hanger 1 extending upwards beyond the floor slab reinforcement 3 is cut off. When the floor slab reinforcement 3 is poured for the last time, the upper end of hanger 1 is embedded in the already poured floor slab. The total thickness of the backfill soil layer 7 and the burial layer is 1m, the same as the burial depth of hanger 1.
[0052] In one specific embodiment, the backfill layer 7 uses soft soil. After filling, the soft soil is manually compacted until the hanger will not sway under appropriate external force.
[0053] The following is a detailed description of an anti-settlement structure for buried drainage pipelines in reclaimed areas and the construction process of the drainage pipeline.
[0054] According to the actual construction scenario, the hanger 1 is welded and assembled, and the PVC gasket 4 is installed at the bottom of the hanger 1. The pre-embedded area is excavated at the pre-embedded position of the drainage pipe 2, and the bottom of the pre-embedded area is filled with fine soil layer 5. The hanger 1 is placed on the top surface of the fine soil layer 5, and the gap between the hangers 1 is set. Then the drainage pipe 2 is assembled and treated with anti-corrosion, and installed on the PVC gasket 4.
[0055] When the drainage pipe 2 passes through the brick formwork 11, a through hole is opened on the brick formwork 11, and a rigid sleeve 13 is fixed in the through hole. After the drainage pipe 2 passes through the rigid sleeve 13, asphalt hemp fiber 14 is filled in the gap between the drainage pipe 2 and the rigid sleeve 13, and the two ends of the rigid sleeve 13 are sealed with sealant 15.
[0056] Then, a fixing layer 6 is installed at the location of the hanger 1 to fix the bottom of the hanger 1 and part of the drainage pipe 2, thereby preventing the hanger 1 and the drainage pipe 2 from shaking. Then, soft soil is filled to form a backfill layer 7 to further fix the hanger 1 and the drainage pipe 2.
[0057] Then, the foundation pad 8, waterproof layer 9 and cement mortar protective layer 10 are sequentially buried on the backfill soil layer 7. Finally, the floor slab reinforcement 3 is laid on the top surface of the cement mortar protective layer 10, and the hanger 1 is welded and fixed to the floor slab reinforcement 3. After the floor slab reinforcement 3 is poured and solidified, the excess part of the hanger 1 is cut off.
[0058] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.
Claims
1. A settlement prevention structure for buried drainage pipelines in reclaimed areas, located within the pre-buried area of the drainage pipeline (2), characterized in that: The anti-settlement structure includes: Fine soil layer (5) is filled at the bottom of the pre-buried area; At least two U-shaped hangers (1) are spaced apart on the top surface of the fine soil layer (5) and extend out of the pre-embedded area and are fixed to the floor slab reinforcement (3); The backfill soil layer (7) is buried in the pre-buried area, the backfill soil layer (7) being located on the top surface of the fine soil layer (5), the backfill soil layer (7) partially burying the hanger (1) and completely burying the drainage pipe (2); and The buried layer is filled in the pre-embedded area, the buried layer being located on the top surface of the backfill soil layer (7) and on the bottom surface of the floor slab reinforcement (3).
2. The anti-settlement structure for buried drainage pipelines in reclaimed areas according to claim 1, characterized in that: The buried layer includes: a foundation cushion layer (8) located on the top surface of the backfill soil layer (7) and a cement mortar protective layer (10) located on the top surface of the foundation cushion layer (8).
3. The anti-settlement structure for buried drainage pipelines in reclaimed areas according to claim 2, characterized in that: A waterproof layer (9) is provided between the base cushion layer (8) and the cement mortar protective layer (10).
4. The anti-settlement structure for buried drainage pipelines in reclaimed areas according to claim 1, characterized in that: The drainage pipe (2) includes multiple pipe segments connected together. The spacing between two adjacent hangers (1) is adapted to the length of the pipe segment, and the connection between the two drainage pipes (2) corresponds to the bottom of the hanger (1).
5. A settlement prevention structure for buried drainage pipelines in reclaimed areas according to claim 4, characterized in that: The bottom end of the hanger (1) is fixed with a PVC gasket (4), which is arc-shaped, and the connection of two adjacent drainage pipes (2) abuts against the PVC gasket (4).
6. The anti-settlement structure for buried drainage pipelines in reclaimed areas according to claim 1, characterized in that: The drainage pipe (2) is fitted with a rigid sleeve (13) at the position where it passes through the brick formwork (11), and the rigid sleeve (13) is fixed inside the brick formwork (11).
7. A settlement prevention structure for buried drainage pipelines in reclaimed areas according to claim 6, characterized in that: The space between the drainage pipe (2) and the rigid sleeve (13) is filled with asphalt hemp fibers (14), and the two ends of the rigid sleeve (13) are filled with sealant (15) to seal the asphalt hemp fibers (14).
8. The anti-settlement structure for buried drainage pipelines in reclaimed areas according to claim 1, characterized in that: A fixing layer (6) is provided on the top surface of the fine soil layer (5) along the entire length of the drainage pipe (2). The fixing layer (6) buries the bottom of the hanger (1) and partially buries the drainage pipe (2).
9. A settlement prevention structure for buried drainage pipelines in reclaimed areas according to claim 1, characterized in that: The hanger (1) is made of galvanized angle steel.
10. A settlement prevention structure for buried drainage pipelines in reclaimed areas according to claim 1, characterized in that: The backfill soil (7) used is soft soil.