A trench support method for existing pipe crossings

Abstract

This utility model relates to a trench support method, belonging to the field of pipeline construction technology. Specifically, it is a trench support method for existing pipeline intersections, including multiple Larssen sheet piles and pipelines. The Larssen sheet piles are pre-embedded on both sides inside the trench, and it also includes a reinforcement component: the reinforcement component includes multiple steel plates fixedly installed between the Larssen sheet piles. This utility model achieves the effect of improving construction quality and saving construction costs, solving the problems of existing pipeline splitting construction, which damages the integrity of the pipeline and increases construction costs, has poor economic efficiency in shallow burial cases, and has a low equipment input-output ratio.

Description

Technical Field

[0001] This utility model relates to the field of pipeline construction technology, and in particular to a trench support method for existing pipeline intersections. Background Technology

[0002] In urban municipal projects, there are situations where newly constructed pipelines intersect with existing pipelines, and trench excavation is generally used for construction.

[0003] A search revealed Chinese patent CN208184738U, which discloses a pipe jacking construction structure. This structure involves installing a back wall, a back steel plate, a pipe jacking machine, guide rails, a hydraulic jack support, and a tunneling machine sequentially from back to front in the foundation pit. The hydraulic jack support allows for smooth pipe delivery and facilitates the removal of the slings, preventing damage to the pipe surface. Through the coordinated action of the pipe jacking machine and the tunneling machine, the pipe is pushed forward section by section to complete the pipe jacking construction.

[0004] Based on the above search and existing technology, the findings were as follows:

[0005] The above-mentioned method of constructing pipelines in sections not only damages the integrity of the pipelines but also increases construction costs. It is not economically viable in shallow burial situations and has a low return on investment for equipment, thus having certain limitations. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model proposes a trench support method for existing pipeline intersections, which can both improve construction quality and save construction costs.

[0007] The technical solution to achieve the purpose of this utility model is as follows: a trench support method for existing pipeline intersections, comprising multiple Larssen sheet piles and pipelines, wherein the Larssen sheet piles are pre-embedded on both sides inside the trench, and further comprising reinforcement components:

[0008] The reinforcement assembly includes multiple steel plates fixedly installed between Larssen sheet piles.

[0009] Preferably, channel steel is welded between the steel plates, the channel steel is disposed on the upper and lower sides of the pipe, and reinforcing steel is fixedly installed between the channel steel and the steel plates.

[0010] Preferably, an I-beam is fixedly installed on the top of the Larssen sheet pile, and a protective sleeve is fitted on the outside of the pipe.

[0011] Compared with existing technologies, the significant advantages of this invention are:

[0012] Firstly, when faced with situations where new pipelines intersect with existing pipelines, this utility model uses Larssen steel sheet piles to perform skip-pile construction at the location of the existing pipeline without interrupting it. This maintains the integrity of the pipeline while saving construction costs, thus offering certain economic benefits.

[0013] Secondly, this utility model improves construction efficiency, and the use of reinforcement components enhances the stability of the support structure, significantly improving the protection effect on existing pipelines.

[0014] This solves the problems of existing pipeline disassembly construction, which damages the integrity of the pipeline, increases construction costs, is uneconomical in shallow burial situations, and has a low equipment input-output ratio. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a three-dimensional structural schematic diagram provided in one embodiment of the present invention;

[0017] Figure 2 This is a side view structural diagram provided in one embodiment of the present invention;

[0018] Figure 3 This is a top view structural diagram of the present invention provided in two embodiments.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Larssen sheet piles; 2. I-beams; 3. Steel plates; 4. Pipes; 5. Channel steel; 6. Reinforcing steel; 7. Protective sleeves. Detailed Implementation

[0021] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0022] This utility model provides an improved trench support method for existing pipe intersections. The technical solution of this utility model is as follows:

[0023] Example 1

[0024] like Figure 1 As shown, a conventional trench support method for intersecting pipelines includes multiple Larssen sheet piles 1 and a pipeline 4. The Larssen sheet piles 1 are pre-embedded on both sides inside the trench. The sheet piles have excellent bending and shear resistance, effectively resisting earth pressure. The method also includes reinforcement components.

[0025] The reinforcement components include multiple steel plates 3 fixedly installed between Larssen sheet piles 1, which enhance the load-bearing capacity of the structure without damaging the original structure.

[0026] Example 2:

[0027] Based on the trench support method for existing pipe crossings provided in the first embodiment of this application, the second embodiment of this application proposes another trench support method for existing pipe crossings. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0028] The second embodiment of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0029] like Figures 2-3 As shown, channel steel 5 is welded between steel plates 3. The channel steel 5 is set on the upper and lower sides of the pipe 4. Reinforcing steel 6 is fixedly installed between the channel steel 5 and the steel plate 3 to maintain the stability and firmness of the weld, prevent collapse, and avoid force concentration.

[0030] Furthermore, an I-beam 2 is fixedly installed on the top of the Larsen sheet pile 1, and a protective sleeve 7 is fitted on the outside of the pipe 4. A channel steel 5 is also installed on the top of the I-beam 2 to prevent soil from falling off. In addition, the protective sleeve 7 ensures the integrity of the pipe 4.

[0031] The specific working method is as follows: First, high-pressure jet grouting is used to reinforce the soil around the existing pipeline 4. Larssen sheet piles 1 are installed at the location of the existing pipeline 4 in a skip-pile manner to avoid interrupting the existing pipeline 4 and maintain its integrity. Second, steel plates 3 are welded to the existing Larssen sheet piles 1. Then, using steel plates 3 as reinforcement components, 28B channel steel 5 is installed between the steel plates 3. A protective sleeve 7 is installed on the outside of the pipeline 4 to prevent accidental damage during construction. Finally, after the pipeline construction is completed, backfilling is carried out in layers, and the layers are removed simultaneously. The construction process is simple and fast, saving manpower and material resources.

[0032] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A trench support method for existing pipe crossings, comprising multiple Larssen sheet piles (1) and pipes (4), characterized in that: The Larssen sheet piles (1) are pre-embedded on both sides inside the trench, and also include: The reinforcement assembly includes a plurality of steel plates (3) fixedly installed between Larssen sheet piles (1).

2. The trench support method for existing pipeline intersections according to claim 1, characterized in that: Channel steel (5) is welded between the steel plates (3). The channel steel (5) is set on the upper and lower sides of the pipe (4). Reinforcing steel (6) is fixedly installed between the channel steel (5) and the steel plate (3).

3. A trench support method for existing pipeline intersections according to any one of claims 1-2, characterized in that: The top of the Larssen sheet pile (1) is fixedly installed with an I-beam (2), and the outside of the pipe (4) is covered with a protective sleeve (7).

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