Prefabricated environment-friendly slope steel retaining wall and construction method thereof

Abstract

The invention provides a prefabricated environment-friendly side slope steel retaining wall and a construction method thereof. The prefabricated environment-friendly side slope steel retaining wall comprises a retaining wall base arranged at a slope toe and an assembled retaining wall. According to the prefabricated environment-friendly side slope steel retaining wall, the assembly type concept is integrated into upgrading and reconstruction of a traditional retaining wall, and the prefabricated environment-friendly side slope steel retaining wall is undoubtedly a key measure for improving the project quality and responding to the green development call. Through the transformation, the requirements of modern engineering for structural performance and environmental friendliness can be met, and new styles and features are brought to urban landscapes. The retaining wall can be prefabricated and assembled, the construction efficiency is improved, the requirement for environmental protection is met, and the stability of the retaining wall can be guaranteed.

Description

Technical Field

[0001] This invention relates to the field of geotechnical engineering technology, and in particular to a prefabricated environmentally friendly steel retaining wall for slopes and its construction method. Background Technology

[0002] In recent years, with the rapid development of the national economy, the number of slope and deep foundation pit projects in my country has increased significantly. Retaining walls are a major measure to ensure their safety, and their design and construction methods are diverse and complex. From gravity-type to cantilever-type, and then to buttress-type, anchor-type, and pile-slab-type structures, the application of various structural forms demonstrates the continuous progress and innovation of engineering technology. However, these traditional retaining walls still face many challenges in practical use, including long construction periods, significant environmental pollution, and a lack of greening functions. These problems have gradually become unavoidable constraints in modern transportation engineering projects. Summary of the Invention

[0003] The purpose of this invention is to provide a prefabricated environmentally friendly steel retaining wall for slopes and its construction method, so as to solve the problems existing in the prior art.

[0004] The technical solution adopted to achieve the purpose of this invention is as follows: a prefabricated environmentally friendly steel retaining wall for slopes, including a retaining wall base arranged at the toe of the slope and an assembled retaining wall.

[0005] The retaining wall base has a highway at its front end and a slope at its rear end. An embedded steel plate is installed on the upper surface of the retaining wall base.

[0006] The assembled retaining wall comprises several hexagonal prism cells interlocked in a honeycomb pattern. Each hexagonal prism cell is open at both ends and hollow inside. The hexagonal prism cells are welded to corresponding pre-embedded steel plates. The interior of each hexagonal prism cell is filled with a filling material.

[0007] Furthermore, the filling material is one or more of the following: engineering waste, steel slag, slope debris, sand and gravel, or concrete.

[0008] Furthermore, adjacent hexagonal prism cells are connected by connectors.

[0009] Furthermore, the horizontal honeycomb grid of the assembled retaining wall is greater than or equal to three cells.

[0010] Furthermore, the side wall of the hexagonal prism lattice chamber is provided with drainage holes.

[0011] Furthermore, the hexagonal prism lattice is made of stainless steel.

[0012] Furthermore, the side of the assembled retaining wall that contacts the slope body is provided with anchor rods inserted into the slope body.

[0013] The technical effects of this invention are beyond doubt:

[0014] A. It can effectively improve project efficiency, significantly reduce potential traffic congestion at the construction site, and alleviate the economic pressure caused by long construction periods and high costs to a certain extent. It enables formwork-free construction. Formwork-free construction means that there is no need to build additional formwork, thus greatly reducing the time for on-site concrete pouring and curing, while also saving labor and material costs;

[0015] B. It is more environmentally friendly and flexible, and through the hollow structure design, it can more effectively handle construction waste and slope soil.

[0016] C. It offers additional advantages in terms of the stability of the retaining wall and the design of the drainage holes. Attached Figure Description

[0017] Figure 1 The assembly effect of prefabricated retaining walls in practical applications;

[0018] Figure 2 A structural diagram showing the retaining wall formed by stacking prefabricated retaining walls;

[0019] Figure 3 This is a schematic diagram of a hexagonal prism lattice structure.

[0020] In the diagram: 1. Filling material; 2. Hexagonal prism lattice; 3. Highway; 4. Slope body; 5. Mortise; 6. Tenon. Detailed Implementation

[0021] The present invention will be further described below with reference to embodiments, but it should not be construed that the scope of the present invention is limited to the following embodiments. Various substitutions and modifications made based on ordinary technical knowledge and common practices in the art without departing from the above-described technical concept of the present invention should be included within the scope of protection of the present invention.

[0022] Example 1:

[0023] See Figures 1-3 This embodiment provides a prefabricated environmentally friendly steel retaining wall for slopes, including a retaining wall base arranged at the toe of the slope and an assembled retaining wall.

[0024] The retaining wall base has a highway 3 at its front end and a slope 4 at its rear end. A pre-embedded steel plate is installed on the upper surface of the retaining wall base.

[0025] The assembled retaining wall comprises several hexagonal prism cells 2 interlocked in a honeycomb pattern. Each hexagonal prism cell 2 is open at both ends and hollow inside. Each hexagonal prism cell 2 is welded to a corresponding pre-embedded steel plate. The inner cavity of each hexagonal prism cell 2 is filled with a filling material 1.

[0026] This embodiment utilizes prefabricated components and modular construction, which not only shortens the construction period but also reduces on-site construction waste and minimizes the impact on the surrounding environment. Integrating prefabricated construction concepts into the upgrading and renovation of traditional retaining walls is undoubtedly a key measure to improve project quality and respond to the call for green development. This renovation not only meets the demands of modern engineering for structural performance and environmental friendliness but also brings a new look to the urban landscape.

[0027] The steel retaining wall used in this embodiment can not only be prefabricated and assembled, improving construction efficiency and meeting environmental protection requirements, but also ensure the stability of the retaining wall.

[0028] Example 2:

[0029] This embodiment is largely the same as Embodiment 1, except that the filling material 1 is one or more of construction waste, steel slag, slope debris, sand and gravel, or concrete. The inner cavity of the hexagonal prism grid 2 can provide sufficient storage space for solid waste such as construction waste and steel slag, as well as slope debris. This design meets the current societal demand for environmental protection. Centralized treatment of construction waste and other waste materials not only reduces environmental pollution but also helps maintain the cleanliness and aesthetics of the construction site area, saving time and financial resources for solid waste disposal.

[0030] Example 3:

[0031] This embodiment is similar in main content to Embodiment 1, except that adjacent hexagonal prism cells 2 are connected by connectors. For example, mortises 5 and tenons 6 appear alternately on the six faces of the hexagonal prisms, and are spliced ​​together during the assembly of the retaining wall, further enhancing its stability. Alternatively, other types of openings, slots, and connecting structures can be pre-set according to the specific needs of the project, greatly simplifying subsequent installation work and reducing on-site chaos.

[0032] Example 4:

[0033] This embodiment is largely the same as Embodiment 1, except that the horizontal honeycomb grid of the assembled retaining wall has three or more cells. Geometric characteristics are used to achieve a staggered connection between the two layers of prefabricated retaining walls. This design not only improves the stability of the retaining wall but also enhances its resistance to wind loads and seismic forces.

[0034] Example 5:

[0035] This embodiment is largely the same as Embodiment 1, except that drainage holes are provided on the side walls of the hexagonal prism lattice 2. These drainage holes ensure that the retaining wall can still function properly under adverse weather conditions. These drainage holes extend through opposite sides of the hexagonal prism, which is crucial for preventing rainwater from seeping into the wall. The drainage holes ensure the dryness of the interior of the wall, avoiding problems such as wall expansion or deformation due to moisture, thereby extending the service life of the retaining wall.

[0036] Example 6:

[0037] The main content of this embodiment is the same as that of embodiment 1, except that the hexagonal prism lattice 2 is made of stainless steel.

[0038] Example 7:

[0039] This embodiment is similar in main content to Embodiment 1, except that the side of the assembled retaining wall that contacts the slope 4 is equipped with an anchor bolt inserted into the slope 4. This, combined with the anchor bolt anchoring technology, further reinforces the retaining wall. This combination not only meets the functional requirements of practical applications but also improves the overall stability and durability of the retaining wall.

[0040] Example 8:

[0041] This embodiment provides a construction method for the prefabricated environmentally friendly steel retaining wall for slope protection as described in any one of Embodiments 1 to 7. The construction steps are as follows:

[0042] 1) Construction preparation work:

[0043] The work includes surveying and setting out, prefabricating environmentally friendly steel retaining walls, and installing equipment. Depending on the specific project requirements, the dimensions of the hexagonal prism assembly units are adjusted, or the necessary openings, slots, and connection structures for retaining wall installation are set as needed. The adjustable height of the assembly units, flexibly adjusted according to specific design requirements, greatly enhances its practicality and versatility in various engineering projects. Whether for large or small projects, the assembly units can be adjusted to adapt to complex and varied terrain and geological conditions.

[0044] 2) Grooving:

[0045] 2.1) Before excavating the foundation pit, investigate underground obstacles and existing pipelines, and take necessary dismantling, modification, relocation and protection measures to prevent damage.

[0046] 2.2) The foundation excavation adopts a combination of manual and mechanical excavation, and the retaining wall foundation pit is excavated strictly according to the design dimensions to ensure that the bottom elevation of the foundation pit meets the design requirements.

[0047] 2.3) During the foundation excavation process, geological checks should be carried out at any time according to the excavation situation. If it is found that the bedrock burial depth does not conform to the design or there are adverse geological conditions, the survey and design unit should be notified in a timely manner for handling.

[0048] 3) Retaining wall foundation construction:

[0049] The foundation is cast in place with concrete of the design grade, and concrete tenons are set at the base. Controlled reinforcing bars are set at the upper edge of the foundation, and controlled reinforcing bars are also set at the bottom of the retaining wall toe plate. The steel plate embedded in the foundation is welded to the steel plate of the wall.

[0050] 4) Retaining wall unit installation:

[0051] After the retaining wall foundation concrete reaches a certain strength, the retaining wall units are installed. The retaining wall units are hoisted by crane with manual assistance, and after being placed in place, they are firmly supported to prevent overturning. Then, welding is immediately carried out to install and fix the retaining wall units in place.

[0052] 5) Backfilling behind the retaining wall:

[0053] After the foundation strength meets the requirements, backfill and compact in layers in a timely manner. Within 2 meters of the back of the retaining wall, use an impact rammer for compaction; the use of heavy compaction machinery is strictly prohibited to ensure the stability of the retaining wall. Backfilling should be carried out simultaneously on both sides of the retaining wall to prevent lateral displacement and overturning of the retaining wall panels. The backfilling above the toe of the wall should ensure the minimum embedment depth of the retaining wall and be made into a 4% cross slope to prevent water seepage from affecting the stability of the wall.

Claims

1. A prefabricated environmentally friendly steel retaining wall for slope protection, characterized in that, This includes the retaining wall base placed at the toe of the slope, as well as the assembled retaining wall; The front and rear ends of the retaining wall base are respectively the highway (3) and the slope body (4); the upper surface of the retaining wall base is provided with a pre-embedded steel plate; The assembled retaining wall includes several honeycomb-shaped hexagonal prism cells (2) that are spliced ​​together. The hexagonal prism cells (2) are open at the top and bottom and hollow inside. The side walls of the hexagonal prism cells (2) are provided with mortises (5) and tenons (6). The mortises (5) and tenons (6) of adjacent hexagonal prism cells (2) appear alternately and are spliced ​​together when assembling the retaining wall. The concrete tenons are inserted into the lower opening of the corresponding hexagonal prism cells (2). The hexagonal prism cells (2) are welded to the corresponding pre-embedded steel plates. The inner cavity of the hexagonal prism cells (2) is filled with filling material (1).

2. The prefabricated environmentally friendly steel retaining wall for slope protection according to claim 1, characterized in that: The filling material (1) is one or more of the following: engineering waste, steel slag, slope soil, sand and gravel, or concrete.

3. A prefabricated environmentally friendly steel retaining wall for slope protection according to claim 1, characterized in that: Adjacent hexagonal prism cells (2) are connected by connectors.

4. A prefabricated environmentally friendly steel retaining wall for slope protection according to claim 1, characterized in that: The assembled retaining wall has three or more horizontal honeycomb grids.

5. A prefabricated environmentally friendly steel retaining wall for slope protection according to claim 1, characterized in that: The hexagonal prism lattice (2) has drainage holes on its side wall.

6. A prefabricated environmentally friendly steel retaining wall for slope protection according to claim 1, characterized in that: The hexagonal prism lattice (2) is made of stainless steel.

7. A prefabricated environmentally friendly steel retaining wall for slope protection according to claim 1, characterized in that: An anchor rod is provided on the side of the assembled retaining wall that abuts against the slope body (4) and is inserted into the slope body (4).

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