River-crossing pipeline structure

Abstract

The utility model discloses a river-crossing pipeline structure which comprises a foundation, two buttresses are poured on the foundation, the two buttresses are arranged on two banks of a river channel, and a pipeline main body structure is fixedly connected between the two buttresses. According to the river-crossing pipeline structure, the rigidity and the stability of the river-crossing pipeline are improved, the application range of the river-crossing pipeline is expanded, the overall sectional area of the structure is increased by utilizing the strength of the river-crossing steel pipe and adding the reinforced profile steel at the bottom, the structural stress in the middle of a large bending moment is reduced, and therefore when the span is large, the rigidity and the stability of the river-crossing pipeline are improved. Structures such as pipe bridges and trusses can be prevented from being used, the steel pipe can still be used for directly crossing the river channel, the application range of the river-crossing pipe bridge is widened, and remarkable economic benefits are achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipeline structure in water conservancy projects, specifically relating to cross-river pipeline structures. Background Technology

[0002] Pipeline engineering is applied to various irrigation and water supply projects. When crossing rivers, there are currently three main methods: constructing new pipe bridges, utilizing existing bridges, and direct crossing with steel pipes. Newly constructed pipe bridges have high durability, but the investment is often large, and they are not economical when transportation conditions are limited in mountainous areas. When using existing bridges to cross rivers, the pipeline needs to be rerouted, which increases the pipeline length. Directly using the steel pipe itself as a pipe bridge is limited by the rigidity and strength of the steel pipe, and generally has a shorter span and lower stability. Utility Model Content

[0003] The purpose of this utility model is to provide a cross-river pipeline structure that improves the rigidity and stability of cross-river pipelines and expands their applicable scope.

[0004] The technical solution adopted by this utility model is a cross-river pipeline structure, including a foundation, on which two piers are cast, located on both banks of the river, and the main pipeline structure is fixedly connected between the two piers.

[0005] The features of this utility model also include:

[0006] The foundation is a foundation with a bearing capacity of not less than 200 kPa. A cushion layer is poured on the top of the foundation and at the bottom of the two piers. Anti-sliding piles are provided on the side of the foundation, piers and cushion layer that is close to the river.

[0007] The main structure of the pipeline includes a cross-river steel pipe, with grooves for placing the steel pipes on the top of the two piers. The two ends of the cross-river steel pipe are fixed in the two grooves respectively. It also includes reinforcing steel, with the cross-river steel pipe installed on top of the reinforcing steel.

[0008] The wall thickness of the cross-river steel pipe shall not be less than 10mm, and the cross-river steel pipe shall be made of seamless steel pipe.

[0009] The groove for placing the steel pipe is arc-shaped, with the radius of the groove equal to the outer diameter of the steel pipe crossing the river. The central angle of the groove is not less than 120°. The distance between the bottom vertex of the groove and the top of the foundation is not less than 800mm. The width between the side of the groove and the side of the pier is not less than 500mm.

[0010] A circular arc liner is fixed to the bottom of the cross-river steel pipe. The circular arc liner is located between the cross-river steel pipe and the reinforcing steel. The longitudinal section of the circular arc liner is circular arc-shaped. The inner diameter of the circular arc liner is equal to the outer diameter of the cross-river steel pipe. The central angle of the circular arc liner is not less than 120°. The thickness of the circular arc liner is not less than 10mm. The circular arc liner is arranged along the length of the cross-river steel pipe and is located between two piers.

[0011] An epoxy resin adhesive layer is applied between the arc-shaped lining plate and the cross-river steel pipe.

[0012] The reinforcing steel is an H-beam, with an "H"-shaped longitudinal section. The reinforcing steel is located along the length of the bottom of the arc-shaped liner, and the top of the reinforcing steel is welded to the arc-shaped liner.

[0013] The steel pipes spanning the river, the arc-shaped lining plates, and the outer surfaces of the reinforcing steel are all coated with anti-corrosion and anti-rust layers.

[0014] The beneficial effects of this utility model are:

[0015] The cross-river pipeline structure provided by this utility model utilizes the inherent strength of the cross-river steel pipe and adds reinforcing steel at the bottom, increasing the overall cross-sectional area of ​​the structure. It also reduces structural stress in the middle of a large bending moment, allowing for the use of steel pipes to directly cross the river even with a large span, thus expanding the applicability of cross-river pipe bridges and resulting in significant economic benefits. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the cross-river pipeline structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional location of the support piers for the cross-river pipeline structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the mid-span cross-section of the cross-river pipeline structure of this utility model.

[0019] In the diagram, 1. Foundation, 2. Pier, 3. Subbase, 4. Anti-slide pile, 5. Steel pipe spanning the river, 6. Steel pipe placement groove, 7. Reinforcing steel, 8. Arc-shaped lining plate, 9. Epoxy resin adhesive layer. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] The cross-river pipeline structure provided by this utility model, such as Figure 1As shown, it includes a foundation 1, on which two supports 2 are poured. The supports 2 are made of reinforced concrete with a concrete strength of not less than C20 and meet the requirements for frost resistance, thus ensuring the strength and stability of the supports 2. The two supports 2 are located on both banks of the river, and the main pipeline structure is fixed between the two supports 2.

[0022] The foundation 1 has a bearing capacity of not less than 200 kPa, ensuring strong foundation bearing capacity. A cushion layer 3 is poured on top of the foundation 1 and at the bottom of the two abutments 2. The cushion layer 3 can evenly distribute the load, reduce the pressure on the foundation 1, prevent frost heave, provide drainage and waterproofing functions, and isolate different materials to avoid contamination. Furthermore, the cushion layer 3 can improve foundation performance, adapt to foundation deformation, and is easy to construct, adapting to various environments. These functions together ensure the stability and durability of the structure, making it an indispensable part of the engineering design. Anti-slide piles 4 are installed on the side of the foundation 1, abutments 2, and cushion layer 3 closest to the river channel, facilitating strong stability for the foundation 1, abutments 2, and cushion layer 3.

[0023] like Figure 2 As shown, the main structure of the pipeline includes a cross-river steel pipe 5. Two support piers 2 each have steel pipe placement grooves 6 on their tops. Both ends of the cross-river steel pipe 5 are fixed into the two steel pipe placement grooves 6, thus ensuring the stability of the cross-river steel pipe 5. Figure 3 As shown, it also includes reinforcing steel 7, and the cross-river steel pipe 5 is installed on top of the reinforcing steel 7;

[0024] The cross-river steel pipe 5 has a wall thickness of not less than 10mm and is made of seamless steel pipe. Seamless steel pipe is widely used in pipeline systems for high-pressure transportation of liquids, gases or steam, as well as in the fields of machinery manufacturing and building structures, due to its high strength, corrosion resistance and sealing performance. It can operate stably in complex environments and provide reliable sealing and support functions. It is an indispensable material in industry and construction. The steel pipe placement groove 6 is arc-shaped and the radius of the steel pipe placement groove 6 is equal to the outer diameter of the cross-river steel pipe 5, which facilitates the placement of the cross-river steel pipe 5 on the top of the two supports 2. The stability of the cross-river steel pipe 5 is ensured by the steel pipe placement groove 6. The central angle of the steel pipe placement groove 6 is not less than 120°. The distance between the bottom vertex of the steel pipe placement groove 6 and the top of the foundation 1 is not less than 800mm. The width of the side of the steel pipe placement groove 6 from the side of the support 2 is not less than 500mm.

[0025] A circular arc liner plate 8 is fixedly connected to the bottom of the cross-river steel pipe 5. The circular arc liner plate 8 is made of steel plate to ensure the strength of the circular arc liner plate. The circular arc liner plate 8 is located between the cross-river steel pipe 5 and the reinforcing steel 7. The longitudinal section of the circular arc liner plate 8 is circular arc-shaped to ensure that the cross-river steel pipe 5 can be stably placed into the steel pipe placement groove 6 of the support pier 2. The inner diameter of the circular arc liner plate 8 is equal to the outer diameter of the cross-river steel pipe 5. The central angle of the circular arc liner plate 8 is not less than 120°. The thickness of the circular arc liner plate 8 is not less than 10mm. The circular arc liner plate 8 is arranged along the length of the cross-river steel pipe 5 and is located between two support piers 2.

[0026] An epoxy resin layer 9 is applied between the arc-shaped lining plate 8 and the cross-river steel pipe 5. This epoxy resin layer 9, through its excellent adhesion and sealing properties, firmly bonds the arc-shaped lining plate 8 to the cross-river steel pipe 5, while preventing moisture and corrosive media from penetrating the gap between them. It possesses good chemical corrosion resistance and mechanical strength, maintaining stability in complex environments and withstanding mechanical stress and vibration. Furthermore, the epoxy resin layer 9 also has insulating properties, preventing electrochemical corrosion and ensuring the long-term stability and reliability of the structure, thus protecting the cross-river steel pipe 5 and preventing welding damage to it.

[0027] The reinforcing steel 7 is an H-beam, and its longitudinal section is "H" shaped. The reinforcing steel 7 is located at the bottom of the arc liner plate 8 along its length, and its top is welded to the arc liner plate 8.

[0028] The outer surfaces of the cross-river steel pipe 5, the arc liner plate 8, and the reinforcing steel 7 are all coated with an anti-corrosion and anti-rust layer.

[0029] The specific construction sequence of the cross-river pipeline structure provided by this utility model is as follows: First, the foundation 1 is laid, then the reinforcing bars are tied, the formwork is erected, and the concrete of the support pier 2 is poured. Next, the cushion layer 3 is poured on the side of the support pier 2. After completion, the anti-slide piles 4 are installed. At the same time, the arc lining plate 8 and the reinforcing steel 7 are welded off-site. After the temperature drops, the arc lining plate 8 and the cross-river steel pipe 5 are bonded with epoxy resin adhesive. Then, the cross-river steel pipe 5, the arc lining plate 8, and the reinforcing steel 7 are subjected to anti-corrosion and anti-rust treatment. Finally, the cross-river steel pipe 5, the arc lining plate 8, and the reinforcing steel 7 are hoisted into the steel pipe placement groove 6 of the support pier 2 and fixed.

[0030] Example 1

[0031] The cross-river pipeline structure proposed in this embodiment, such as Figure 1 As shown, it includes a foundation 1, on which two piers 2 are poured. The two piers 2 are located on both sides of the river channel, and the main pipeline structure is fixed between the two piers 2.

[0032] Example 2

[0033] The cross-river pipeline structure proposed in this embodiment, such as Figure 1As shown, it includes a foundation 1, on which two piers 2 are poured. The two piers 2 are located on both sides of the river channel, and the main pipeline structure is fixed between the two piers 2.

[0034] The foundation 1 is a foundation with a bearing capacity of not less than 200 kPa. The top of the foundation 1 and the bottom of the two piers 2 are all filled with a cushion layer 3. Anti-slide piles 4 are provided on the side of the foundation 1, piers 2 and cushion layer 3 near the river.

[0035] Example 3

[0036] The cross-river pipeline structure proposed in this embodiment, such as Figure 1 As shown, it includes a foundation 1, on which two piers 2 are poured. The two piers 2 are located on both sides of the river channel, and the main pipeline structure is fixed between the two piers 2.

[0037] The foundation 1 is a foundation with a bearing capacity of not less than 200 kPa. The top of the foundation 1 and the bottom of the two piers 2 are all filled with a cushion layer 3. Anti-slide piles 4 are provided on the side of the foundation 1, piers 2 and cushion layer 3 near the river.

[0038] like Figure 2 As shown, the main structure of the pipeline includes a cross-river steel pipe 5, and two support piers 2 each have steel pipe placement grooves 6 on their tops. Both ends of the cross-river steel pipe 5 are fixedly connected to the two steel pipe placement grooves 6, respectively. Figure 3 As shown, it also includes reinforcing steel 7, and cross-river steel pipe 5 is installed on top of reinforcing steel 7.

[0039] Example 4

[0040] The cross-river pipeline structure proposed in this embodiment, such as Figure 1 As shown, it includes a foundation 1, on which two piers 2 are poured. The two piers 2 are located on both sides of the river channel, and the main pipeline structure is fixed between the two piers 2.

[0041] The foundation 1 is a foundation with a bearing capacity of not less than 200 kPa. The top of the foundation 1 and the bottom of the two piers 2 are all filled with a cushion layer 3. Anti-slide piles 4 are provided on the side of the foundation 1, piers 2 and cushion layer 3 near the river.

[0042] like Figure 2 As shown, the main structure of the pipeline includes a cross-river steel pipe 5, and two support piers 2 each have steel pipe placement grooves 6 on their tops. Both ends of the cross-river steel pipe 5 are fixedly connected to the two steel pipe placement grooves 6, respectively. Figure 3 As shown, it also includes reinforcing steel 7, and the cross-river steel pipe 5 is installed on top of the reinforcing steel 7;

[0043] The wall thickness of the cross-river steel pipe 5 is not less than 10mm, and the cross-river steel pipe 5 is made of seamless steel pipe; the steel pipe placement groove 6 is arc-shaped, the radius of the steel pipe placement groove 6 is equal to the outer diameter of the cross-river steel pipe 5, the central angle of the steel pipe placement groove 6 is not less than 120°, the distance between the bottom vertex of the steel pipe placement groove 6 and the top of the foundation 1 is not less than 800mm, and the width of the side of the steel pipe placement groove 6 from the side of the support pier 2 is not less than 500mm.

[0044] Example 5

[0045] The cross-river pipeline structure proposed in this embodiment, such as Figure 1 As shown, it includes a foundation 1, on which two piers 2 are poured. The two piers 2 are located on both sides of the river channel, and the main pipeline structure is fixed between the two piers 2.

[0046] The foundation 1 is a foundation with a bearing capacity of not less than 200 kPa. The top of the foundation 1 and the bottom of the two piers 2 are all filled with a cushion layer 3. Anti-slide piles 4 are provided on the side of the foundation 1, piers 2 and cushion layer 3 near the river.

[0047] like Figure 2 As shown, the main structure of the pipeline includes a cross-river steel pipe 5, and two support piers 2 each have steel pipe placement grooves 6 on their tops. Both ends of the cross-river steel pipe 5 are fixedly connected to the two steel pipe placement grooves 6, respectively. Figure 3 As shown, it also includes reinforcing steel 7, and the cross-river steel pipe 5 is installed on top of the reinforcing steel 7;

[0048] The wall thickness of the cross-river steel pipe 5 is not less than 10mm, and the cross-river steel pipe 5 is made of seamless steel pipe; the steel pipe placement groove 6 is arc-shaped, the radius of the steel pipe placement groove 6 is equal to the outer diameter of the cross-river steel pipe 5, the central angle of the steel pipe placement groove 6 is not less than 120°, the distance between the bottom vertex of the steel pipe placement groove 6 and the top of the foundation 1 is not less than 800mm, and the width of the side of the steel pipe placement groove 6 from the side of the support pier 2 is not less than 500mm;

[0049] A circular arc liner plate 8 is fixedly connected to the bottom of the cross-river steel pipe 5. The circular arc liner plate 8 is located between the cross-river steel pipe 5 and the reinforcing steel 7. The longitudinal section of the circular arc liner plate 8 is circular arc-shaped. The inner diameter of the circular arc liner plate 8 is equal to the outer diameter of the cross-river steel pipe 5. The central angle of the circular arc liner plate 8 is not less than 120°. The thickness of the circular arc liner plate 8 is not less than 10mm. The circular arc liner plate 8 is arranged along the length of the cross-river steel pipe 5 and is located between two piers 2.

[0050] Example 6

[0051] The cross-river pipeline structure proposed in this embodiment, such as Figure 1 As shown, it includes a foundation 1, on which two piers 2 are poured. The two piers 2 are located on both sides of the river channel, and the main pipeline structure is fixed between the two piers 2.

[0052] The foundation 1 is a foundation with a bearing capacity of not less than 200 kPa. The top of the foundation 1 and the bottom of the two piers 2 are all filled with a cushion layer 3. Anti-slide piles 4 are provided on the side of the foundation 1, piers 2 and cushion layer 3 near the river.

[0053] like Figure 2 As shown, the main structure of the pipeline includes a cross-river steel pipe 5, and two support piers 2 each have steel pipe placement grooves 6 on their tops. Both ends of the cross-river steel pipe 5 are fixedly connected to the two steel pipe placement grooves 6, respectively. Figure 3 As shown, it also includes reinforcing steel 7, and cross-river steel pipe 5 is installed on top of reinforcing steel 7; the wall thickness of cross-river steel pipe 5 is not less than 10mm, and cross-river steel pipe 5 is made of seamless steel pipe;

[0054] The steel pipe placement groove 6 is arc-shaped, the radius of the steel pipe placement groove 6 is equal to the outer diameter of the cross-river steel pipe 5, the central angle of the steel pipe placement groove 6 is not less than 120°, the distance between the bottom vertex of the steel pipe placement groove 6 and the top of the foundation 1 is not less than 800mm, and the width between the side of the steel pipe placement groove 6 and the side of the support pier 2 is not less than 500mm.

[0055] A circular arc liner plate 8 is fixedly connected to the bottom of the cross-river steel pipe 5. The circular arc liner plate 8 is located between the cross-river steel pipe 5 and the reinforcing steel 7. The longitudinal section of the circular arc liner plate 8 is circular arc-shaped. The inner diameter of the circular arc liner plate 8 is equal to the outer diameter of the cross-river steel pipe 5. The central angle of the circular arc liner plate 8 is not less than 120°. The thickness of the circular arc liner plate 8 is not less than 10mm. The circular arc liner plate 8 is arranged along the length of the cross-river steel pipe 5 and is located between two piers 2.

[0056] An epoxy resin adhesive layer 9 is applied between the arc-shaped lining plate 8 and the cross-river steel pipe 5.

[0057] The reinforcing steel 7 is an H-beam, and its longitudinal section is "H" shaped. The reinforcing steel 7 is located at the bottom of the arc liner plate 8 along its length, and its top is welded to the arc liner plate 8.

[0058] The outer surfaces of the cross-river steel pipe 5, the arc liner plate 8, and the reinforcing steel 7 are all coated with an anti-corrosion and anti-rust layer.

Claims

1. A cross-river pipeline structure, characterized in that, It includes a foundation (1), on which two piers (2) are cast. The two piers (2) are located on both sides of the river channel, and the main structure of the pipeline is fixed between the two piers (2).

2. The cross-river pipeline structure according to claim 1, characterized in that, The foundation (1) is a foundation with a bearing capacity of not less than 200 kPa. The top of the foundation (1) and the bottom of the two supports (2) are all filled with a cushion layer (3). Anti-slide piles (4) are provided on the side of the foundation (1), supports (2) and cushion layer (3) near the river.

3. The cross-river pipeline structure according to claim 1, characterized in that, The main structure of the pipeline includes a cross-river steel pipe (5), and the top of the two support piers (2) are provided with steel pipe placement grooves (6). The two ends of the cross-river steel pipe (5) are respectively fixed in the two steel pipe placement grooves (6). It also includes reinforcing steel (7), and the cross-river steel pipe (5) is installed on the top of the reinforcing steel (7).

4. The cross-river pipeline structure according to claim 3, characterized in that, The cross-river steel pipe (5) has a wall thickness of not less than 10 mm and is made of seamless steel pipe.

5. The cross-river pipeline structure according to claim 3, characterized in that, The steel pipe placement groove (6) is arc-shaped, the radius of the steel pipe placement groove (6) is equal to the outer diameter of the cross-river steel pipe (5), the central angle of the steel pipe placement groove (6) is not less than 120°, the distance between the bottom vertex of the steel pipe placement groove (6) and the top of the foundation (1) is not less than 800mm, and the width of the side of the steel pipe placement groove (6) from the side of the support pier (2) is not less than 500mm.

6. The cross-river pipeline structure according to claim 3, characterized in that, The bottom of the cross-river steel pipe (5) is fixed with an arc-shaped liner plate (8). The arc-shaped liner plate (8) is located between the cross-river steel pipe (5) and the reinforcing steel (7). The longitudinal section of the arc-shaped liner plate (8) is arc-shaped. The inner diameter of the arc-shaped liner plate (8) is equal to the outer diameter of the cross-river steel pipe (5). The central angle of the arc-shaped liner plate (8) is not less than 120°. The thickness of the arc-shaped liner plate (8) is not less than 10mm. The arc-shaped liner plate (8) is arranged along the length of the cross-river steel pipe (5) and is located between the two supports (2).

7. The cross-river pipeline structure according to claim 6, characterized in that, An epoxy resin adhesive layer (9) is applied between the arc-shaped liner (8) and the cross-river steel pipe (5).

8. The cross-river pipeline structure according to claim 7, characterized in that, The reinforcing steel (7) is an H-beam, the longitudinal section of the reinforcing steel (7) is "H" shaped, the reinforcing steel (7) is located at the bottom of the arc liner (8) along the longitudinal direction, and the top of the reinforcing steel (7) is welded to the arc liner (8).

9. The cross-river pipeline structure according to claim 8, characterized in that, The outer surfaces of the cross-river steel pipe (5), the arc liner (8), and the reinforcing steel (7) are all coated with an anti-corrosion and anti-rust layer.

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