Steel sheet pile penetrating foundation pit cast iron water pipe protection structure

Abstract

The utility model discloses a steel sheet pile penetrating foundation pit cast iron water pipe protection structure which comprises an enclosure steel sheet pile arranged on the periphery of a foundation pit, and a gap reserved in the position where a cast iron water pipe penetrates. The bottom supporting system is arranged below the cast iron water pipe; a protective frame is suspended on the upper portion. According to the in-situ protection structure, the enclosure steel sheet piles, the bottom supporting system, the upper suspension protection frame and the inter-pile baffles are arranged, the large-diameter water pipe can be firmly fixed, due to the fixing effect of the enclosure piles and the inter-pile baffles, the soil pressure at the notch can be reduced, the bottom supporting system can bear large force, the vertical deformation of the large-diameter water pipe is small, and the service life of the large-diameter water pipe is prolonged. The upper suspension protection frame assists in controlling deformation in the horizontal direction, and the influence of construction on the large-diameter water pipe is greatly reduced. The in-situ protection method has the advantages of being convenient to construct and saving materials, and solves the problems of large coordination difficulty and high construction cost of many property units, difficulty in coordination, long construction period and the like during relocation and relocation of the large-diameter water pipe.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a protective structure for cast iron water pipes in steel sheet pile foundation pits. Background Technology

[0002] Steel sheet piles are widely used in urban drainage projects due to their advantages such as stable and reliable performance, high bearing capacity, light weight, simple construction, high construction efficiency, and reusability.

[0003] Urban drainage projects are characterized by numerous points, wide coverage, and location in urban areas. They often involve pipeline relocation and protection issues. Large-diameter water pipes are usually the main pipes in urban areas. Relocation and relocation greatly increase costs and cause large-scale water outages during the process, making coordination difficult.

[0004] In-situ protection can reduce costs and minimize the impact on citizens. Large-diameter cast iron water pipes are characterized by their heavy weight and weak joints, making their protection a challenge during foundation pit excavation. Conventional suspension methods are insufficient for safe and effective protection, and the complex relationship between the curved steel sheet pile foundation support and the water pipe makes suspension difficult. The in-situ protection approach is worth promoting, offering significant social benefits. Utility Model Content

[0005] The purpose of this utility model is to solve the problems mentioned above in the background technology and to propose a protective structure for cast iron water pipes in steel sheet pile foundation pits.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A protective structure for cast iron water pipes in a steel sheet pile foundation pit includes:

[0008] Sheet piles are used to support the foundation pit, and gaps are reserved at the locations where cast iron water pipes pass through.

[0009] A bottom support system is provided below the cast iron water pipe;

[0010] The upper suspended protective frame connects the cast iron water pipe to the foundation pit support steel pipe;

[0011] The inter-pile baffles are installed layer by layer in the gaps between the retaining steel sheet piles.

[0012] As a further embodiment of this utility model: 2m retaining steel sheet piles are driven into the gaps of the retaining steel sheet piles along the direction of the cast iron water pipe outward from the foundation pit, and the inter-pile baffles are welded layer by layer every 2-3m of vertical excavation.

[0013] As a further embodiment of this utility model: the bottom support system includes:

[0014] Two sets of supporting steel sheet piles are symmetrically arranged on both sides of the cast iron water pipe and perpendicular to the water pipe;

[0015] Corbel plates are welded to the supporting sheet piles and retaining sheet piles, with a gap reserved in the middle.

[0016] The pressure-bearing I-beam is welded laterally between two sets of corbel plates;

[0017] Steel pads are used to fill the gaps between the pressure-bearing I-beams and the cast iron water pipes.

[0018] As a further embodiment of this utility model: the thickness of the corbel plate is 12mm, and the number of corbel plates in each group is two, which are symmetrically welded to the top of the supporting steel sheet pile and the retaining steel sheet pile.

[0019] As a further embodiment of this utility model: the pressure-bearing I-beam is of model I28b, and its two ends are welded and fixed to the bracket plate.

[0020] As a further embodiment of this utility model: the upper suspension protection frame is made of No. 10 I-beams welded into a rectangular frame, and the frame connects the cast iron water pipe and the foundation pit support steel pipe into a whole.

[0021] As a further embodiment of this utility model: the thickness of the inter-pile baffle is 20mm, and it is fixed to the inner side of the retaining steel sheet pile by welding.

[0022] As a further embodiment of this utility model: a reinforcement structure is provided in the gap of the retaining steel sheet pile, the reinforcement structure including inclined support steel sheet piles and bolted connectors, which is used to enhance the overall stability of the retaining pile.

[0023] As a further embodiment of this utility model: the thickness of the steel pad is 5-10mm, and its surface is coated with an anti-rust coating.

[0024] As a further embodiment of this utility model, the bottom support system and the upper suspension protection frame are fixed together by an adjustable connector.

[0025] The beneficial effects of this utility model are as follows: This in-situ protection structure, by setting up retaining steel sheet piles, a bottom support system, an upper suspended protection frame, and pile-to-pile baffles, can securely fix large-diameter water pipes. Furthermore, due to the fixing effect of the retaining piles and the pile-to-pile baffles, the soil pressure at the gap can be reduced. The bottom support system can withstand greater forces, resulting in smaller vertical deformation of the large-diameter water pipes. The upper suspended protection frame assists in controlling horizontal deformation, greatly reducing the impact of construction on the large-diameter water pipes.

[0026] This in-situ protection method has the advantages of convenient construction and material saving, and solves the problems of high coordination difficulty and high construction cost caused by the relocation of large-diameter water pipes involving multiple property owners, difficult coordination, long construction period, etc. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings.

[0028] Figure 1 This is a plan view of the present invention;

[0029] Figure 2 This is a cross-sectional view of the present invention;

[0030] Figure 3 This is a cross-sectional view of the cast iron water pipe support of this utility model;

[0031] Figure 4 This is a cross-sectional view of the suspended cast iron water pipe of this utility model;

[0032] Figure 5 This is a cross-sectional view of the intercolumn baffle of this utility model.

[0033] In the diagram: 1. Pit support steel pipe; 2. Suspended protection frame; 3. Support steel sheet pile; 4. Corbel plate; 5. Pressure bearing I-beam; 6. Steel pad plate; 7. Retaining steel sheet pile; 8. Cast iron water pipe; 9. Water pipe interface; 10. Pile baffle. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0035] Example 1, please refer to Figures 1-5 As shown, this utility model is a protective structure for cast iron water pipes in steel sheet pile foundation pits, comprising:

[0036] Sheet piles 7 are installed around the foundation pit, and gaps are reserved at the locations where cast iron water pipes 8 pass through.

[0037] A bottom support system is installed below the cast iron water pipe 8;

[0038] The upper suspended protective frame 2 connects the cast iron water pipe 8 to the foundation pit support steel pipe 1;

[0039] The inter-pile baffles 10 are installed layer by layer in the gaps of the retaining steel sheet piles 7.

[0040] Example 2, please refer to Figures 1-5 As shown, this utility model is a protective structure for cast iron water pipes in steel sheet pile foundation pits, comprising:

[0041] Sheet piles 7 are installed around the foundation pit, with gaps reserved at the locations where cast iron water pipes 8 pass through. Sheet piles 7 are driven 2m outward from the foundation pit along the direction of cast iron water pipes 8 at the gaps of the sheet piles 7, and the inter-pile baffles 10 are welded layer by layer every 2-3m of vertical excavation.

[0042] A bottom support system is installed below the cast iron water pipe 8;

[0043] The bottom support system includes:

[0044] Two sets of supporting steel sheet piles 3 are symmetrically arranged on both sides of the cast iron water pipe 8 and perpendicular to the water pipe;

[0045] Bracket plate 4 is welded to the supporting sheet pile 3 and the retaining sheet pile 7, with a gap reserved in the middle;

[0046] The pressure-bearing I-beam 5 is horizontally welded between two sets of corbel plates 4;

[0047] A steel pad 6 is used to fill the gap between the pressure-bearing I-beam 5 and the cast iron water pipe 8.

[0048] The upper suspended protective frame 2 connects the cast iron water pipe 8 to the foundation pit support steel pipe 1;

[0049] The inter-pile baffles 10 are installed layer by layer in the gaps of the retaining steel sheet piles 7.

[0050] Example 3, please refer to Figures 1-5 As shown, this utility model is a protective structure for cast iron water pipes in steel sheet pile foundation pits, comprising:

[0051] Sheet piles 7 are installed around the foundation pit, with gaps reserved at the locations where cast iron water pipes 8 pass through. Sheet piles 7 are driven 2m outward from the foundation pit along the direction of cast iron water pipes 8 at the gaps of the sheet piles 7, and the inter-pile baffles 10 are welded layer by layer every 2-3m of vertical excavation.

[0052] A bottom support system is installed below the cast iron water pipe 8;

[0053] The bottom support system includes:

[0054] Two sets of supporting steel sheet piles 3 are symmetrically arranged on both sides of the cast iron water pipe 8 and perpendicular to the water pipe;

[0055] The corbel plate 4 is welded to the supporting steel sheet pile 3 and the retaining steel sheet pile 7, with a gap reserved in the middle; the thickness of the corbel plate 4 is 12mm, and there are two corbel plates 4 in each group, which are symmetrically welded to the top of the supporting steel sheet pile 3 and the retaining steel sheet pile 7.

[0056] A pressure-bearing I-beam 5 is horizontally welded between two sets of corbel plates 4; the pressure-bearing I-beam 5 is of model I28b, and its two ends are welded and fixed to the corbel plates 4.

[0057] A steel pad 6 is used to fill the gap between the pressure-bearing I-beam 5 and the cast iron water pipe 8.

[0058] The upper suspended protective frame 2 connects the cast iron water pipe 8 to the foundation pit support steel pipe 1;

[0059] The inter-pile baffles 10 are installed layer by layer in the gaps of the retaining steel sheet piles 7.

[0060] Example 4, please refer to Figures 1-5 As shown, this utility model is a protective structure for cast iron water pipes in steel sheet pile foundation pits, comprising:

[0061] Sheet piles 7 are installed around the foundation pit, with gaps reserved at the locations where cast iron water pipes 8 pass through. Sheet piles 7 are driven 2m outward from the foundation pit along the direction of cast iron water pipes 8 at the gaps of the sheet piles 7, and the inter-pile baffles 10 are welded layer by layer every 2-3m of vertical excavation.

[0062] A bottom support system is installed below the cast iron water pipe 8;

[0063] The bottom support system includes:

[0064] Two sets of supporting steel sheet piles 3 are symmetrically arranged on both sides of the cast iron water pipe 8 and perpendicular to the water pipe;

[0065] Corbel plates 4 are welded to the supporting sheet piles 3 and the retaining sheet piles 7, with a pre-existing gap in between. The thickness of each corbel plate 4 is 12mm, and each set consists of two corbel plates 4, symmetrically welded to the top of the supporting sheet piles 3 and the retaining sheet piles 7. A reinforcing structure is provided at the gap in the retaining sheet piles 7. This reinforcing structure includes inclined supporting sheet piles and bolted connectors, used to enhance the overall stability of the retaining piles.

[0066] The bottom support system is fixed to the upper suspension protection frame 2 by an adjustable connector.

[0067] A pressure-bearing I-beam 5 is horizontally welded between two sets of corbel plates 4; the pressure-bearing I-beam 5 is of model I28b, and its two ends are welded and fixed to the corbel plates 4.

[0068] A steel pad 6 is used to fill the gap between the pressure-bearing I-beam 5 and the cast iron water pipe 8. The steel pad 6 has a thickness of 5-10 mm and its surface is coated with an anti-rust coating.

[0069] The upper suspended protective frame 2 connects the cast iron water pipe 8 and the foundation pit support steel pipe 1; the upper suspended protective frame 2 is made of No. 10 I-beam welded into a rectangular frame, and the frame connects the cast iron water pipe 8 and the foundation pit support steel pipe 1 into a whole.

[0070] The inter-pile baffles 10 are installed layer by layer in the gaps between the retaining steel sheet piles 7. The thickness of the inter-pile baffles 10 is 20mm, and they are fixed to the inner side of the retaining steel sheet piles 7 by welding.

[0071] The foregoing has provided a detailed description of one embodiment of the present invention, but the description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the scope of the claims of the present invention.

Claims

1. A protective structure for cast iron water pipes in steel sheet pile foundation pits, characterized in that, include: Sheet piles (7) are installed around the foundation pit, and gaps are reserved at the locations where cast iron water pipes (8) pass through; A bottom support system is provided below the cast iron water pipe (8); The upper suspended protective frame (2) connects the cast iron water pipe (8) to the foundation pit support steel pipe (1). The inter-pile baffles (10) are installed layer by layer in the gaps of the retaining steel sheet piles (7).

2. The protective structure for cast iron water pipes in a steel sheet pile foundation pit according to claim 1, characterized in that, The retaining steel sheet piles (7) are inserted 2m outward from the foundation pit along the direction of the cast iron water pipe (8) in the gap of the retaining steel sheet piles (7), and the retaining steel sheet piles (7) are welded layer by layer every 2-3m of vertical excavation.

3. The protective structure for cast iron water pipes in a steel sheet pile foundation pit according to claim 1, characterized in that... The bottom support system includes: Two sets of supporting steel sheet piles (3) are symmetrically arranged on both sides of the cast iron water pipe (8) and perpendicular to the water pipe; The corbel plate (4) is welded to the supporting steel sheet pile (3) and the retaining steel sheet pile (7), with a gap reserved in the middle; A pressure-bearing I-beam (5) is horizontally welded between two sets of corbel plates (4); A steel pad (6) is used to fill the gap between the pressure-bearing I-beam (5) and the cast iron water pipe (8).

4. The protective structure for cast iron water pipes in steel sheet pile foundation pits according to claim 3, characterized in that... The thickness of the corbel plate (4) is 12mm, and there are two corbel plates (4) in each group, which are symmetrically welded to the top of the supporting steel sheet pile (3) and the retaining steel sheet pile (7).

5. The protective structure for cast iron water pipes in a steel sheet pile foundation pit according to claim 3, characterized in that... The pressure-bearing I-beam (5) is of model I28b, and its two ends are welded and fixed to the bracket plate (4).

6. The protective structure for cast iron water pipes in a steel sheet pile foundation pit according to claim 1, characterized in that, The upper suspended protection frame (2) is made of No. 10 I-beam welded into a rectangular frame, which connects the cast iron water pipe (8) and the foundation pit support steel pipe (1) into a whole.

7. The protective structure for cast iron water pipes in a steel sheet pile foundation pit according to claim 1, characterized in that, The thickness of the inter-pile baffle (10) is 20 mm, and it is fixed to the inner side of the retaining steel sheet pile (7) by welding.

8. The protective structure for cast iron water pipes in a steel sheet pile foundation pit according to claim 1, characterized in that, The gaps in the retaining steel sheet piles (7) are provided with a reinforcement structure, which includes inclined support steel sheet piles and bolted connectors to enhance the overall stability of the retaining piles.

9. A protective structure for cast iron water pipes in a steel sheet pile foundation pit according to claim 3, characterized in that... The steel pad (6) has a thickness of 5-10 mm and its surface is coated with an anti-rust coating.

10. A protective structure for cast iron water pipes in a steel sheet pile foundation pit according to claim 1, characterized in that, The bottom support system and the upper suspension protection frame (2) are fixed together by an adjustable connector.

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