Unilateral supporting device suitable for excavation of municipal drainage pipeline groove

Abstract

The utility model provides a unilateral supporting device suitable for excavation of a municipal drainage pipeline groove, a supported groove is provided with an existing pipeline adjacent to a newly-built pipeline, the unilateral supporting device comprises a plurality of fixing piles, a supporting plate, surrounding purlins, diagonal bracings and a plurality of base plates, the fixing piles are inserted into the side, where the existing pipeline is arranged, of the groove side by side, and the supporting plate is arranged on the supporting plate. The enclosing purlin is fixed on the fixing piles and is perpendicular to the fixing piles, the supporting plate is arranged between the fixing piles and the groove and used for enclosing the retaining wall, the base plates are fixedly padded at the bottom of the groove at intervals, the diagonal braces are fixedly supported between the base plates and the enclosing purlin, and the newly-built pipeline is laid at the bottom of the groove and located below the diagonal braces. The structure can stably support a soil body on the side wall of the groove on the premise of not influencing the existing pipeline, collapse is prevented, and the safety of constructors is guaranteed; the arrangement of the base plates and the diagonal bracings provides a stable foundation and space for laying of newly-built pipelines, construction operation is convenient, the construction efficiency is improved, and the construction cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of municipal engineering technology, and in particular to a single-sided support device suitable for trench excavation of municipal drainage pipelines. Background Technology

[0002] In the construction of municipal drainage pipelines, trench excavation is often required in areas with existing pipelines to lay new pipelines. Traditional trench support methods, such as symmetrical support on both sides, are not suitable when existing pipelines exist on one side of the trench. Using traditional methods not only interferes with or even damages existing pipelines, affecting their normal operation, but also significantly increases construction difficulty and costs due to limited construction space. Furthermore, ordinary single-sided support structures lack sufficient stability to effectively withstand the pressure of the trench sidewall soil, easily leading to collapses and other safety accidents, endangering the safety of construction personnel and the stability of the surrounding environment. Therefore, there is an urgent need for a single-sided support device specifically designed for trench excavation of municipal drainage pipelines, especially in scenarios with existing pipelines, to ensure construction safety, improve construction efficiency, and reduce the impact on existing pipelines. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a single-sided support device suitable for trench excavation of municipal drainage pipelines. To achieve the above objectives, this utility model adopts the following technical solution:

[0004] A single-sided support device suitable for excavating trenches for municipal drainage pipelines is disclosed. The supported trench has existing pipelines adjacent to the newly constructed pipeline. The device includes several fixed piles, support plates, walers, braces, and several pads. The fixed piles are inserted side by side into the trench on the side with the existing pipelines. The walers are fixed to the fixed piles and are set perpendicular to the fixed piles. The support plates are set between the fixed piles and the trench to form a retaining wall. The pads are fixedly placed at intervals at the bottom of the trench. The braces are fixedly supported between the pads and the walers. The newly constructed pipeline is laid at the bottom of the trench and located below the braces.

[0005] Furthermore, the pad is detachably connected to a rotatable connector for connecting the pad and the support.

[0006] Furthermore, the connector includes two threaded cylinders, the ends of which are hinged together. One threaded cylinder is threadedly connected to the pad, and the other threaded cylinder is threadedly connected to the countersupplier.

[0007] Furthermore, the pad is provided with evenly spaced connecting holes, and anchoring steel bars are installed in the connecting holes.

[0008] Furthermore, the pad is configured as two foldable hinged plates, one fixed to the bottom surface of the trench and the other fixed to the side of the trench.

[0009] Furthermore, the pad is made of wood or plastic.

[0010] Furthermore, the length of a single pad is not less than one-third of the width of the groove bottom.

[0011] Furthermore, the waler includes several pairs of corbels, support members and diagonal braces disposed between the pairs of corbels. The corbels are fixed to the fixed piles in parallel, the support members are fixed to the fixed piles and corbels in strip shape, and the diagonal braces are fixed to the support members at intervals to support the ends of the braces.

[0012] Furthermore, the fixed pile is made of channel steel, the bracket is made of steel bracket, the support is made of I-beam steel, and the diagonal brace is a non-standard steel component with a triangular cross-section. The supporting brace is supported on the hypotenuse of the diagonal brace, or its cross-section is L-shaped, and the supporting brace is supported on the right-angle side of the diagonal brace. The fixed pile, bracket, support and diagonal brace are welded and fixed.

[0013] Furthermore, the support is a telescopic support.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] By inserting fixed piles into the side of the trench where existing pipelines are located, vertically fixing walers to the fixed piles, constructing a retaining wall with support plates, and fixing spacers at intervals to the bottom of the trench, with bracing between the spacers and walers, effective support is achieved for one side of the trench. This structure can stably support the trench sidewall soil without affecting existing pipelines, preventing collapse and ensuring the safety of construction personnel. At the same time, the spacers and bracing provide a stable foundation and space for laying new pipelines, facilitating construction operations, improving construction efficiency, and reducing construction costs, demonstrating good practicality and economic benefits. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of the trench in an embodiment of the present invention;

[0018] Figure 2 This is a top view of the trench structure according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the main structure of the waler according to an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the waler cross-sectional structure according to an embodiment of the present invention;

[0021] Figure 5 This is a three-dimensional structural diagram of the pad in an embodiment of the present invention.

[0022] In the above attached diagram: 1. Trench; 11. Existing pipeline; 12. New pipeline; 2. Fixed pile; 3. Support plate; 4. Waler; 41. Corbel; 42. Support; 43. Diagonal brace; 5. Support plate; 6. Connecting hole; 61. Anchoring steel bar; 62. Connector; 7. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0024] like Figures 1-5 As shown in the figure, this utility model embodiment proposes a single-sided support device suitable for the excavation of municipal drainage pipeline trenches. The supported trench 1 has an existing pipeline 11 adjacent to the newly built pipeline 12. It includes several fixed piles 2, support plates 3, walers 4, braces 5, and several pads 6. The fixed piles 2 are inserted side by side into the trench 1 on the side where the existing pipeline 11 is located. The walers 4 are fixed on the fixed piles 2 and set perpendicular to the fixed piles 2. The support plates 3 are set between the fixed piles 2 and the trench 1 to form a retaining wall. The pads 6 are fixedly placed at intervals at the bottom of the trench 1. The braces 5 are fixedly supported between the pads 6 and the walers 4. The newly built pipeline 12 is laid at the bottom of the trench 1 and located below the braces 5.

[0025] During construction, several fixed piles 2 are first inserted side-by-side into the trench 1 on the side where the existing pipeline 11 is located. The fixed piles 2 penetrate to a certain depth into the soil, providing a stable support foundation through friction and embedment with the soil. Then, walers 4 are fixed to the fixed piles 2 and kept vertical, serving to connect and transfer loads. Next, support plates 3 are placed between the fixed piles 2 and the trench 1 to form a retaining wall and prevent soil collapse. At intervals, pads 6 are fixed at the bottom of the trench 1. The pads 6 distribute the load transferred from the supports 5, increasing the bottom bearing capacity. Finally, the supports 5 are fixed between the pads 6 and the walers 4, transferring the soil pressure on the support plates 3 to the pads 6 and the fixed piles 2, forming a stable load-bearing system. During this process, the new pipeline 12 is laid at the bottom of the trench 1 and below the supports 5. The entire single-sided support device provides a safe and stable working environment for the laying of the new pipeline 12.

[0026] In this embodiment, as Figure 1 , 5As shown, a rotatable connector 7 is detachably connected to the pad 6, and the connector 7 is used to connect the pad 6 and the support 5. The detachable rotatable connector 7 is provided on the pad 6, connecting the pad 6 and the support 5. When the support 5 is subjected to soil pressure and deviates by a certain angle, or when the angle of the support 5 needs to be adjusted due to construction requirements, the connector 7 can rotate, allowing the support 5 to rotate relative to the pad 6. Simultaneously, the detachable connection facilitates the installation, disassembly, and replacement of the support 5. This improves the flexibility of the support 5's installation and use, better adapts to the stress requirements under different working conditions, enhances the overall adaptability of the single-sided support device, and effectively ensures the normal operation and support effect of the support 5 in complex construction environments, reducing the risk of support failure due to unsuitable angles or inconvenient installation of the support 5.

[0027] In this embodiment, as Figure 1 , 5 As shown, the connector 7 includes two threaded cylinders, the ends of which are hinged together. One threaded cylinder is threadedly connected to the pad 6, and the other threaded cylinder is threadedly connected to the support 5. The connector 7 consists of two threaded cylinders with hinged ends, one threaded cylinder threaded to the pad 6 and the other threaded cylinder threaded to the support 5. Through the threaded connection, the screw depth of the threaded cylinders can be adjusted according to actual construction needs, thereby adjusting the distance between the support 5 and the pad 6 and the preload of the support 5. The hinged design at the ends allows the two threaded cylinders to rotate relative to each other, meeting the needs of adjusting the angle of the support 5. This achieves adjustability and angle adaptability in the connection between the support 5 and the pad 6, facilitating construction personnel to accurately adjust the position and stress state of the support 5 according to specific trench 1 dimensions, soil pressure, and other factors, further improving the stability and reliability of the single-sided support device, while also facilitating installation and maintenance. A detachable connection method may also include a bayonet locking connection.

[0028] In this embodiment, as Figure 5 As shown, the pad 6 has evenly spaced connecting holes 61, and anchoring steel bars 62 are installed within each connecting hole 61. The connecting holes 61 are evenly spaced on the pad 6, and the anchoring steel bars 62 are installed within each connecting hole 61, extending deep into the soil at the bottom of the trench 1. Through adhesion and friction with the soil, the pad 6 is firmly connected to the soil at the bottom of the trench 1. This enhances the connection strength and stability between the pad 6 and the soil at the bottom of the trench 1, allowing the pad 6 to more effectively transfer the load of the support 5, preventing displacement or loosening of the pad 6 under soil pressure, thereby improving the load-bearing capacity and anti-overturning capacity of the entire single-sided support device and ensuring construction safety.

[0029] In this embodiment, as Figure 1As shown, the pad 6 is configured as two foldable hinged plates, one fixed to the bottom surface of the trench 1 and the other fixed to the side of the trench 1. During the construction preparation stage, the two hinged plates can be folded together for easy transportation and storage; during construction, they are unfolded and fixed to the bottom and side of the trench 1 respectively, forming an L-shaped structure to increase the contact area between the pad 6 and the soil of the trench 1.

[0030] In this embodiment, the pad 6 is made of wood or plastic. Wood and plastic have a certain strength and toughness, capable of withstanding a certain load, while being relatively lightweight, making them easy for construction workers to handle and install. This reduces the difficulty and labor intensity of handling the pad 6 during construction, improving construction efficiency. Furthermore, wood and plastic are relatively inexpensive, reducing construction costs, and while meeting certain load-bearing requirements, they effectively protect the soil at the bottom of the trench 1, minimizing damage to the soil.

[0031] In this embodiment, as Figure 1 As shown, the length of a single pad 6 is not less than one-third of the width of the trench bottom. The length of a single pad 6 is not less than one-third of the width of the trench bottom to ensure that the pad 6 has sufficient length to cover the bottom of the trench 1, thereby distributing the load transmitted from the support 5 more evenly and avoiding load concentration due to insufficient length of the pad 6, which could cause local soil damage or failure of the pad 6.

[0032] In this embodiment, as Figure 3 , 4 As shown, the waler 4 includes several pairs of corbel members 41, support members 42 disposed between the pairs of corbel members 41, and diagonal bracing members 43. The corbel members 41 are fixed side by side to the fixed piles 2. The support members 42 are fixed in strip shape to the fixed piles 2 and the corbel members 41. The diagonal bracing members 43 are fixed at intervals to the support members 42 to support the ends of the bracing members 5. The waler 4 is composed of several pairs of corbel members 41, support members 42 disposed between the pairs of corbel members 41, and diagonal bracing members 43. The corbel members 41 are fixed side-by-side to the fixed piles 2, providing an installation foundation and support point for the support members 42. The support members 42 are fixed in strip form to the fixed piles 2 and corbel members 41, serving as a connection and reinforcement. The diagonal bracing members 43 are fixed at intervals to the support members 42, and the counter-bracing 5 is supported on the diagonal bracing members 43. The diagonal bracing members 43 transfer the load of the counter-bracing 5 to the fixed piles 2 through the support members 42 and corbel members 41. This waler 4 structure is reasonably designed, effectively bearing and transferring the load of the counter-bracing 5, enhancing the overall strength and stability of the waler 4, improving the resistance of the single-sided support device to soil pressure, ensuring the support effect, and ensuring the safety of the trench 1 sidewall during construction.

[0033] In this embodiment, the fixed pile 2 is made of channel steel, the corbel 41 is made of steel corbel, the support 42 is made of I-beam steel, and the diagonal brace 43 is a non-standard steel component with a triangular cross-section. The counterbracing 5 is supported on the hypotenuse of the diagonal brace 43, or its cross-section is L-shaped, and the counterbracing 5 is supported on the right-angled side of the diagonal brace 43. The fixed pile 2, corbel 41, support 42, and diagonal brace 43 are welded together. The fixed pile 2 is made of channel steel, the corbel 41 is made of steel corbel, the support 42 is made of I-beam steel, and the diagonal brace 43 is a non-standard steel component with a triangular or L-shaped cross-section. These steel materials have high strength and rigidity. The fixed pile 2, corbel 41, support 42, and diagonal brace 43 are connected together by welding to form a solid steel structure. The counterbracing 5 is supported on the diagonal brace 43, and the mechanical properties of the steel are used to transfer soil pressure to the fixed pile 2 through the waler 4 structure.

[0034] In this embodiment, the support 5 is a telescopic support 5. The telescopic support 5, through its internal telescopic structure, such as a hydraulic or threaded telescopic mechanism, adjusts its length according to the actual width of the trench 1 and the soil pressure, thereby adjusting the preload of the support 5 and adapting to trenches 1 of different widths. This improves the versatility and applicability of the support 5, meeting the support requirements of trenches 1 of different sizes, reducing the variety of support 5 specifications, and lowering construction costs. Simultaneously, the preload of the support 5 can be flexibly adjusted according to the actual stress conditions, ensuring that the support 5 is always in the optimal stress state, enhancing the stability and support effect of the single-sided support device.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A single-sided support device suitable for trench excavation of municipal drainage pipelines, wherein the supported trench has existing pipelines adjacent to the newly constructed pipeline, characterized in that, The system includes several fixed piles, support plates, walers, braces, and several pads. The fixed piles are inserted side by side into the trench on the side where the existing pipeline is located. The walers are fixed to the fixed piles and are set perpendicular to the fixed piles. The support plates are set between the fixed piles and the trench to form a retaining wall. The pads are fixedly placed at intervals at the bottom of the trench. The braces are fixedly supported between the pads and the walers. The newly constructed pipeline is laid at the bottom of the trench and located below the braces.

2. The single-sided support device for municipal drainage pipeline trench excavation as described in claim 1, characterized in that: The pad is detachably connected to a rotatable connector, which is used to connect the pad and the support.

3. A single-sided bracing device for use in trench excavation for municipal sewer lines as defined in claim 2, wherein: The connector includes two threaded cylinders, the ends of which are hinged to each other. One threaded cylinder is threadedly connected to a pad, and the other threaded cylinder is threadedly connected to a brace.

4. A single-sided support device for trench excavation of a municipal sewer pipeline according to any one of claims 1 to 3, characterized in that: The pad is provided with evenly spaced connecting holes, and anchoring steel bars are installed in the connecting holes.

5. A single sided support device for use in trench excavation for municipal sewer lines as defined in claim 4, wherein: The pad is configured as two foldable hinged plates, one fixed to the bottom surface of the trench and the other fixed to the side of the trench.

6. A single-sided bracing device for use in trench excavation for municipal sewer lines as defined in claim 5, wherein: The pad is made of wood or plastic.

7. A single-sided support device for municipal drainage pipeline trench excavation as described in claim 6, characterized in that: The length of a single pad is not less than one-third of the width of the groove bottom.

8. A single side bracing device for use in trench excavation for municipal sewer lines as defined in claim 1, wherein: The waler includes several corbels arranged in pairs, support members and diagonal braces arranged between the pairs of corbels. The corbels are fixed to the fixed piles in parallel, the support members are fixed to the fixed piles and corbels in strip shape, and the diagonal braces are fixed to the support members at intervals to support the ends of the braces.

9. A single-sided support device for excavation of municipal drainage pipeline trenches as described in claim 8, characterized in that: The fixed pile is made of channel steel, the bracket is made of steel bracket, the support is made of I-beam steel, and the diagonal brace is a non-standard steel component with a triangular cross-section. The counterbracing is supported on the hypotenuse of the diagonal brace, or its cross-section is L-shaped, and the counterbracing is supported on the right-angle side of the diagonal brace. The fixed pile, bracket, support and diagonal brace are welded and fixed.

10. A single side bracing device for use in trench excavation for municipal sewer lines as defined in claim 1, wherein: The support structure is a telescopic support.

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