Pipe horizontal bend support structure for confined spaces

Abstract

This utility model discloses a support structure for horizontal pipe bends in confined spaces, relating to the field of pipe laying and support technology. It includes multiple support units arranged at arc intervals along the thrust direction of the bend. Each support unit comprises a steel column vertically anchored to the foundation surface, a pressure plate fixedly connected to the upper part of the steel column, and an arc-shaped support plate fixedly disposed above the pressure plate to support the bend. The support surface of the arc-shaped support plate is adapted to the outer wall contour of the bend, forming a good contact surface. This utility model, through modular and prefabricated design, achieves miniaturization, lightweighting, and rapid construction of the support structure, making it particularly suitable for pipeline projects in densely built-up areas and other confined workspaces, exhibiting significant practicality and economic benefits.

Description

Technical Field

[0001] This utility model relates to the field of pipeline laying and support technology, and in particular to a support structure for horizontal elbows of pipelines in confined spaces. Background Technology

[0002] In municipal water supply and drainage, water conservancy transportation, oil and gas pipeline projects, when the pipeline direction changes horizontally, the fluid will generate a huge thrust at the bend. Traditionally, this thrust is balanced by cast-in-place reinforced concrete supports to prevent the pipeline joints from loosening or shifting. Although these concrete supports are structurally stable, they have inherent disadvantages such as large size, high self-weight, large amount of excavation, long curing period, and high requirements for construction space.

[0003] With the increasing scarcity of urban underground space resources, pipeline projects often need to be carried out in extremely confined environments such as existing integrated utility tunnels, tunnel crossings, and densely built-up areas. Under such conditions, traditional concrete pier construction methods are often difficult to implement, or even impossible, severely restricting the optimized design of pipeline routes and increasing engineering difficulty and cost. Therefore, developing a novel elbow support structure that is compact, quick to install, requires no large-scale excavation, and can provide reliable thrust support has become an urgent technical problem to be solved in this field. Utility Model Content

[0004] The purpose of this utility model is to provide a support structure for horizontal pipe bends in confined spaces. Through standardized and modular design, it enables factory prefabrication and rapid on-site assembly, effectively solving the problem of supporting pipe bends in narrow spaces.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A pipe horizontal elbow support structure for confined spaces includes multiple support units arranged at arc intervals along the thrust direction of the elbow; not less than two units. The support unit includes a steel column vertically anchored to the foundation surface, a pressure plate fixedly connected to the upper part of the steel column, and an arc-shaped support plate fixedly disposed above the pressure plate to support the elbow. The support surface of the arc-shaped support plate is adapted to the outer wall contour of the elbow. A padding material is provided between the arc-shaped support plate and the elbow. The pressure plate is located below the foundation surface, and the top of the pressure plate is flush with the foundation surface. The arc-shaped support plate is located above the foundation surface, and the support surface of the arc-shaped support plate is adapted to the outer wall contour of the elbow to form a good contact surface.

[0006] Preferably, the steel support column is an I-beam or an H-beam.

[0007] Preferably, the bearing plate is a rectangular steel plate with an area larger than the cross-sectional area of ​​the steel column to enhance the support stability.

[0008] Preferably, the horizontal radius of curvature of the arc-shaped support plate is equal to the sum of the turning radius of the elbow, the thickness of the padding material, and the radius of the pipe. The arc-shaped support plates of multiple support units together form a continuous or discontinuous support arc surface concentric with the elbow.

[0009] Preferably, the vertical cross-section of the arc-shaped support plate is arc-shaped, and its radius of curvature is adapted to the outer diameter of the elbow, forming a covering support for the elbow to increase the contact area with the pipeline and improve the stability of the support.

[0010] Preferably, a cushioning material is provided between the arc-shaped support plate and the elbow, and the cushioning material is a flexible buffer layer. The cushioning material is used to evenly distribute contact stress and prevent damage to the anti-corrosion layer of the elbow.

[0011] Preferably, the flexible buffer pad is any one of roofing felt, rubber sheet, and polymer sheet, serving to buffer, prevent slipping, and protect the pipeline.

[0012] Preferably, the steel support column is anchored to the foundation surface by static pressure or hammering, which is suitable for working conditions with high requirements for the disturbance of the surrounding environment.

[0013] The beneficial effects of this utility model are as follows: This utility model is a prefabricated support structure for stabilizing and supporting horizontal bends in pipelines under conditions of limited construction space. Its specific advantages are as follows: It has excellent spatial adaptability: by using decentralized and miniaturized support units instead of integral large-volume concrete supports, the requirements for construction space are reduced to a minimum, making it particularly suitable for space-constrained occasions such as densely built-up areas.

[0014] Construction efficiency is significantly improved: all components can be prefabricated in the factory, and only positioning and assembly operations are required on site. The construction speed is fast, and there is no need for concrete pouring and curing time, which greatly shortens the construction period.

[0015] Superior load-bearing performance: The arc-shaped support plate fits closely to the elbow pipe wall, and the thrust is evenly transferred to the steel column and foundation surface through the padding material. The load path is clear, and the overall rigidity and stability are good.

[0016] Adjustable and reusable: The number and spacing of support units can be flexibly adjusted according to pipe specifications, design pressure, and geological conditions. When needed, the structure can be disassembled, and some components can be reused, making it economical and environmentally friendly.

[0017] Low overall cost: It reduces earthwork excavation, concrete usage, and maintenance costs, resulting in significant overall economic benefits. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the support unit of this utility model.

[0020] Figure 3 This is a plan view of the present invention.

[0021] Figure 4 for Figure 3 AA section view.

[0022] Figure 5 This is a schematic diagram of the arc-shaped support plate of this utility model.

[0023] In the diagram: 1. Foundation surface; 2. Support unit; 21. Steel column; 22. Bearing plate; 23. Curved support plate; 24. Subbase material; 3. Elbow; 4. Straight pipe. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the implementation of the present invention is not limited thereto.

[0025] like Figure 1-5 As shown, a horizontal pipe elbow support structure for confined spaces includes multiple support units 2 arranged at arc intervals along the thrust direction of the elbow 3. Each support unit 2 includes a steel column 21 (I-beam or H-beam) vertically anchored to the base surface 1 by static pressure or hammering, a pressure plate 22 fixedly connected to the upper part of the steel column 21, and an arc-shaped support plate 23 fixedly disposed above the pressure plate 22 to support the elbow 3. The support surface of the arc-shaped support plate 23 is adapted to the outer wall contour of the elbow 3. A padding material 24 is provided between the arc-shaped support plate 23 and the elbow 3. The pressure plate 22 is located below the base surface 1, and its top is flush with the base surface 1. The arc-shaped support plate 23 is located above the base surface 1. The pressure plate 22 is a rectangular steel plate with an area larger than the cross-sectional area of ​​the steel column 21. The horizontal radius of curvature of the arc-shaped support plate 23 is equal to the sum of the turning radius of the elbow 3, the thickness of the padding material 24, and the pipe radius. Multiple arc-shaped support plates 23 of the support units 2 together form a continuous or discontinuous support arc surface concentric with the elbow 3. The vertical cross-section of the arc-shaped support plate 23 is arc-shaped, and its radius of curvature is adapted to the outer diameter of the elbow 3. A padding material 24 is provided between the arc-shaped support plate 23 and the elbow 3. The padding material 24 is a flexible buffer pad. The flexible buffer pad can be any one of asphalt felt, rubber sheet, and polymer sheet.

[0026] like Figures 1-4 As shown, this utility model discloses a horizontal pipe elbow support structure for confined spaces, applied to the support of a 45° elbow 3 of a DN1400 ductile iron pipe. The pipe outer diameter D = 1.462m, and the elbow turning radius R = 1.18m. The support system consists of three support units 2 evenly spaced along a 45° arc length along the back of the elbow 3.

[0027] Each support unit 2 is constructed by welding together an I32a I-beam as a steel column 21, a Q235B rectangular steel plate with a thickness t2=30mm and a planar dimension of 0.5m wide × 1m high as a bearing plate 22, and a Q235B arc-shaped steel plate with a thickness t1=20mm as an arc-shaped support plate 23, forming an integral prefabricated component.

[0028] Critical dimension calculation and design: like Figure 5 As shown, the horizontal radius of curvature r1 of the curved support plate 23 is crucial, and its calculation formula is: r1 = R (turning radius of elbow 3) + D / 2 (pipe radius) + t1 (thickness of the underlay material) = 1.18m + 0.731m + 0.02m = 1.931m. This design ensures that the support surface of the curved support plate 23 remains concentric with the outer wall of the elbow 3.

[0029] The vertical radius of curvature r2 of the arc-shaped support plate 23 is calculated as follows: r2 = D / 2 + t1 = 0.731m + 0.02m = 0.751m, ensuring proper coverage of the pipe. In this embodiment, each arc-shaped support plate 23 has a horizontal wrap angle of 16° and a vertical wrap angle of 30° to provide sufficient contact area.

[0030] Construction process: On-site positioning: Based on the design drawings, accurately lay out the implantation positions of the three support units 2.

[0031] Implanting support unit: Using static pressure equipment, the prefabricated integral support unit 2 steel column 21 (I-beam) is vertically pressed into the foundation surface 1 to the designed depth to ensure good contact between the bottom surface of the bearing plate 22 and the foundation surface 1.

[0032] Laying the padding material 24: A layer of tar paper is laid on the upper surface of the arc-shaped support plate 23 of all support units 2 as the padding material 24.

[0033] Pipe installation: Hoist elbow 3 and position it accurately on the support system where the underlayment material 24 has been laid. Then connect the adjacent straight pipes 4.

[0034] Through the above-described method, this utility model successfully provides safe and reliable support for large-diameter pipe elbows 3 within a limited space, and practice has proven its significant effect.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A support structure for a horizontal pipe bend in a confined space, characterized in that: Includes multiple support units (2) arranged at arc intervals along the thrust direction of the bend (3); The support unit (2) includes a steel column (21) vertically anchored to the foundation surface (1), a pressure plate (22) fixedly connected to the upper part of the steel column (21), and an arc-shaped support plate (23) fixedly set above the pressure plate (22) for supporting the elbow (3); the support surface of the arc-shaped support plate (23) is adapted to the outer wall contour of the elbow (3), a pad material (24) is provided between the arc-shaped support plate (23) and the elbow (3), the pressure plate (22) is located below the foundation surface (1), and the top of the pressure plate (22) is flush with the foundation surface (1), and the arc-shaped support plate (23) is located above the foundation surface (1).

2. The pipe horizontal elbow support structure for confined spaces according to claim 1, characterized in that: The steel support column (21) is an I-beam or an H-beam.

3. A pipe horizontal elbow support structure for confined spaces according to claim 1, characterized in that: The pressure plate (22) is a rectangular steel plate, and its area is larger than the cross-sectional area of ​​the steel column (21).

4. A pipe horizontal elbow support structure for confined spaces according to claim 1, characterized in that: The horizontal radius of curvature of the arc-shaped support plate (23) is equal to the sum of the turning radius of the elbow (3), the thickness of the pad material (24), and the pipe radius. The arc-shaped support plates (23) of multiple support units (2) together form a continuous or discontinuous support arc surface concentric with the elbow (3).

5. A pipe horizontal elbow support structure for confined spaces according to claim 1 or 4, characterized in that: The vertical cross-section of the arc-shaped support plate (23) is arc-shaped, and its radius of curvature is adapted to the outer diameter of the elbow (3).

6. A pipe horizontal elbow support structure for confined spaces according to claim 1, characterized in that: The padding material (24) is a flexible buffer padding.

7. The pipe horizontal elbow support structure for confined spaces according to claim 6, characterized in that: The flexible cushioning layer can be any one of roofing felt, rubber sheet, and polymer sheet.

8. The pipe horizontal elbow support structure for confined spaces according to claim 1, characterized in that: The steel column (21) is anchored to the foundation surface (1) by static pressure or hammering.

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