Multi-stage grid panel type reinforced earth retaining wall structure

Abstract

The utility model discloses a multi-stage grid panel type reinforced earth retaining wall structure. The multi-stage grid panel type reinforced earth retaining wall structure comprises multiple stages of supporting and retaining units which are sequentially arranged from bottom to top. Each stage of supporting and retaining unit comprises a soil filling layer, a soil retaining plate assembly and a grid assembly which are connected with the outer side of the soil filling layer, and a soil engineering tie bar which is arranged at the bottom of the soil filling layer and is connected with the inner end of the grid assembly; wherein the grid assembly comprises a first grid and a second grid; the first grids are located at the bottom of the outer side of the soil filling layer, and the second grids are located on the end face of the outer side of the soil filling layer. The breast board assembly is arranged on the inner side of the grid assembly and matched with the grid assembly in shape. The flexible supporting and retaining system not only has good anti-seismic performance and is beneficial to improving the overall stability of a filling project, but also can be quickly constructed on site, additional masonry materials are not needed, and the safety, stability, economy and low-carbon environmental protection performance of a filling soil body project can be comprehensively achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of retaining structures for embankment projects, and more specifically, to a multi-level grid panel reinforced soil retaining wall structure. Background Technology

[0002] For fill engineering projects, where available land is limited, free-slope filling is not feasible; instead, retaining structures are required to constrain the fill. Traditional retaining structures for confining fill include anti-slide pile-slab walls, gravity retaining walls, and reinforced soil retaining walls. These wall structures commonly employ reinforced concrete, masonry, or plain concrete, involving concrete pouring and masonry material filling, resulting in long construction periods and large masonry volumes, which is not conducive to economical and low-carbon construction. Therefore, adopting lightweight, low-masonry retaining structures is one of the new development directions in fill engineering.

[0003] For lightweight retaining structures with low masonry requirements suitable for embankment projects, existing reinforced soil retaining walls with block panels and gabion panels are sometimes viable options. However, for block-panel reinforced soil retaining walls, the panel portion still consumes a certain amount of concrete, mortar, and other masonry materials. The wall panel surface appears gray or grayish-black, similar to cement mortar, which negatively impacts the project's low-carbon environmental friendliness and landscape harmony. Furthermore, the requirement for smooth and uniform surfaces between blocks during layered filling construction increases construction difficulty and slows down the process. While gabion-panel reinforced soil retaining walls avoid concrete or cement mortar panels, the need to fill the gabions with crushed stone increases the consumption of crushed stone, still placing considerable demand on masonry materials. Additionally, the generally large size of gabions necessitates a significant amount of reinforcing steel, thus compromising the economic efficiency and low-carbon environmental friendliness of this type of retaining wall structure.

[0004] Therefore, in response to the new development direction of construction in embankment projects, which emphasizes economic efficiency, low carbon emissions, environmental protection, safety and stability, rapid construction, and modular assembly, it is urgent to propose new lightweight retaining structures to reduce the defects of existing embankment retaining structures and promote the rational technological innovation and development of embankment retaining structures to meet new demands. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a multi-level grid panel reinforced soil retaining wall structure that features modular assembly, rapid construction, low carbon emissions, environmental friendliness, economic efficiency, and harmonious landscape design. The technical solution is as follows:

[0006] A multi-level grid panel reinforced soil retaining wall structure includes multiple retaining units arranged sequentially from bottom to top; each retaining unit includes a backfill layer, a retaining plate assembly connected to the outside of the backfill layer, a grid assembly, and geogrids located at the bottom of the backfill layer and connected to the inner end of the grid assembly; wherein, the grid assembly includes a first grid and a second grid; the first grid is located at the bottom of the outside of the backfill layer, and the second grid is located on the end face of the outside of the backfill layer; the retaining plate assembly is located inside the grid assembly and matches the shape of the grid assembly.

[0007] This utility model's multi-level grid panel reinforced soil retaining wall structure involves the prefabricated installation of retaining plate components, grid components, and geosynthetic reinforcement during the layered filling process from bottom to top. These components work in synergy with the fill soil to form a flexible retaining system. This system not only has excellent seismic performance, which helps improve the overall stability of the filling project, but also allows for rapid on-site construction without the need for additional masonry materials. It comprehensively achieves safety, stability, economic efficiency, and low-carbon environmental protection in the filling soil project.

[0008] As a further improvement to the aforementioned multi-level grid panel reinforced soil retaining wall structure: the grid assembly is formed by longitudinally splicing together grid units with a length of 2-3m; the retaining plate assembly is formed by longitudinally splicing together retaining plate units with a length of 2-3m; the longitudinal splicing joints between the grid units and between the retaining plate units are staggered. Therefore, the prefabricated units are lightweight, easy to manufacture and transport, and allow for rapid assembly construction of standard modules, which helps improve construction efficiency and ensure project quality.

[0009] As a further improvement to the aforementioned multi-level grid panel reinforced soil retaining wall structure: the first grid includes horizontal bars and a first longitudinal bar arranged at intervals and in a staggered manner; the second grid includes vertical bars and a second longitudinal bar arranged at intervals and in a staggered manner. Thus, the grid assembly adopts a small-section steel cage structure, which is simple in structure, easy to process and manufacture, has high strength, and good retaining effect. At the same time, the amount of steel used is significantly reduced, and no additional masonry materials are required, exhibiting good low-carbon environmental protection and economic efficiency.

[0010] As a further improvement to the aforementioned multi-level grid panel reinforced soil retaining wall structure, the horizontal and vertical bars are formed by bending the same steel bar. This results in high strength for the grid assembly.

[0011] As a further improvement to the aforementioned multi-level grid panel reinforced soil retaining wall structure: the width and height of the grid components are 30-60cm; the spacing between the transverse bars is 5-10cm; and the spacing between the first and second longitudinal bars is greater than the spacing between the transverse bars. Therefore, the grid components have suitable material costs and high strength.

[0012] As a further improvement to the aforementioned multi-level grid panel reinforced soil retaining wall structure, the grid assembly further includes diagonal braces arranged at intervals along the longitudinal direction. The lower end of each diagonal brace is connected to the innermost first longitudinal brace, and the upper end of each diagonal brace is connected to the top second longitudinal brace. This enhances the strength of the grid assembly.

[0013] As a further improvement to the aforementioned multi-level grid panel reinforced soil retaining wall structure: the upper and lower ends of the diagonal braces are provided with first hooks; the spacing between the diagonal braces is greater than the spacing between the horizontal braces. This facilitates the installation of the diagonal braces.

[0014] As a further improvement to the aforementioned multi-level grid panel reinforced soil retaining wall structure: the inner end of each transverse bar is provided with a second hook, and the holes of the geotextile reinforcement are hooked onto the second hook; the distance between the innermost first longitudinal bar and the inner end of the second hook is 10~50cm. Therefore, during construction, the holes in the geotextile reinforcement can be quickly hooked onto the second hooks of each transverse bar, efficiently integrating the grid components and geotextile reinforcement into one unit, facilitating construction and providing good support.

[0015] As a further improvement to the aforementioned multi-level grid panel reinforced soil retaining wall structure: the retaining plate assembly includes a first plate and a second plate, with the first plate disposed on the upper surface of the first grid and the second plate disposed on the inner surface of the second grid. Thus, the retaining effect is improved through the efficient cooperation between the retaining plate assembly and the grid assembly.

[0016] As a further improvement to the aforementioned multi-level grid panel reinforced soil retaining wall structure: the first panel is positioned between the outermost first longitudinal bar and the second grid; the first and second panels are formed by bending the same plastic sheet, creating an arc-shaped plate between them. This results in a retaining panel assembly with suitable material costs, ease of manufacturing, and high strength. Furthermore, landscape patterns that harmonize with the surrounding environment can be drawn on the outer surface of the plastic sheet, enhancing its integration with the surrounding landscape.

[0017] As can be seen, the multi-level grid panel reinforced soil retaining wall structure of this utility model has a simple structure and features modular assembly, rapid construction, low carbon and environmental protection, economic efficiency, and landscape harmony. It effectively solves the problems existing in the construction, environmental protection, and economy of existing anti-slide pile panel walls, gravity retaining walls, and reinforced soil retaining walls. It has strong practicality and is particularly suitable for rapid construction of filling projects such as spoil heaps and embankment filling under the condition of limited land area for slope embankment.

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to aid in understanding this utility model. The content provided in the drawings and the related descriptions in this utility model can be used to explain this utility model, but do not constitute an undue limitation of this utility model. In the drawings:

[0020] Figure 1 This is a schematic diagram of the multi-level grid panel reinforced soil retaining wall structure of Embodiment 1 of this utility model.

[0021] Figure 2 This is a schematic diagram of the support unit in the multi-level grid panel reinforced soil retaining wall structure of Embodiment 1 of this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of a grid unit in the multi-level grid panel reinforced soil retaining wall structure of Embodiment 1 of this utility model.

[0023] Figure 4 This is a schematic diagram of the multi-level grid panel reinforced soil retaining wall structure of Embodiment 2 of this utility model.

[0024] The relevant markings in the above figures are:

[0025] 100 - Ground surface, 200 - Top surface, 300 - Fill layer, 400 - Retaining plate assembly, 410 - First plate, 420 - Second plate, 430 - Curved plate, 500 - Grid assembly, 510 - First grid, 511 - Horizontal bar, 5110 - Second hook, 512 - First longitudinal bar, 520 - Second grid, 521 - Vertical bar, 522 - Second longitudinal bar, 530 - Diagonal bar, 531 - First hook, 600 - Geotechnical tie bar. Detailed Implementation

[0026] The present invention will now be clearly and completely described in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that:

[0027] The technical solutions and features provided in the various parts of this utility model, including the following description, can be combined with each other without conflict.

[0028] Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the protection scope of the present invention.

[0029] Regarding the terminology and units used in this utility model: The terms "comprising," "having," and any variations thereof in the specification, claims, and related parts of this utility model are intended to cover non-exclusive inclusion.

[0030] Example 1

[0031] Figure 1 This is a schematic diagram of the multi-level grid panel reinforced soil retaining wall structure in this embodiment. Figure 2 This is a schematic diagram of the support unit in the multi-level grid panel reinforced soil retaining wall structure of this embodiment. Figure 3 This is a schematic diagram of the structure of a single grid unit in the multi-level grid panel reinforced soil retaining wall structure of this embodiment.

[0032] like Figure 1-3 As shown, in the wall panel formed by vertically layering soil from ground level 100 upwards to the top surface 200 of the soil fill, the multi-level grid panel reinforced soil retaining wall structure includes multiple levels of support units arranged sequentially from bottom to top. Each support unit includes a soil fill layer 300, a retaining plate assembly 400 connected to the outside of the soil fill layer 300, a grid assembly 500, and geosynthetic reinforcement 600 located at the bottom of the soil fill layer 300 and connected to the inner end of the grid assembly 500. Adjacent support units are staggered, with a lateral offset spacing S5 of 0~50cm. Specifically, when the lateral offset spacing S5=0, a planar multi-level wall panel structure is formed.

[0033] The grid assembly 500 is formed by splicing grid units with a length of 2-3m longitudinally; the retaining plate assembly 400 is formed by splicing retaining plate units with a length of 2-3m longitudinally; the longitudinal splicing joints between the grid units and the longitudinal splicing joints between the retaining plate units are staggered.

[0034] The width and height of the grid assembly 500 are 30-60 cm. The grid assembly 500 includes a first grid 510, a second grid 520, and diagonal bars 530 arranged at intervals along the longitudinal direction. The first grid 510 and the second grid 520 are perpendicular to each other.

[0035] The first grid 510 is located at the bottom of the outer side of the fill layer 300, and includes horizontal bars 511 and first longitudinal bars 512 arranged at intervals and in an alternating manner. The second grid 520 is located on the end face of the outer side of the fill layer 300, and includes vertical bars 521 and second longitudinal bars 522 arranged at intervals and in an alternating manner. The upper and lower ends of the diagonal bar 530 are provided with first hooks 531. The first hook 531 at the lower end of the diagonal bar 530 is connected to the innermost first longitudinal bar 512, and the first hook 531 at the upper end of the diagonal bar 530 is connected to the top second longitudinal bar 522.

[0036] The transverse bar 511, the first longitudinal bar 512, the vertical bar 521, the second longitudinal bar 522, and the diagonal bar 530 are all made of steel bars. The transverse bar 511 and the first longitudinal bar 512 are welded together, and the vertical bar 521 and the second longitudinal bar 522 are welded together.

[0037] The horizontal bars 511 and vertical bars 521 are formed by bending the same steel bar. The spacing S1 of the horizontal bars 511 (or vertical bars 521) is 5~10cm, and the spacing S of the first longitudinal bars 512 is... 2x The arrangement spacing S of the second longitudinal rod 522 2y The spacing S3 of the diagonal bars 530 is greater than the spacing S1 of the transverse bars 511. The number of the first longitudinal bars 512 and the second longitudinal bars 522 are 3 to 5 respectively. The inner end of the transverse bar 511 is provided with a second hook 5110, and the distance S4 between the innermost first longitudinal bar 512 and the inner end of the second hook 5110 is 10 to 50 cm.

[0038] The retaining plate assembly 400 is disposed inside the grid assembly 500 and matches the shape of the grid assembly 500. The retaining plate assembly 400 includes a first plate 410 and a second plate 420. The first plate 410 is disposed on the upper surface of the first grid 510 and located between the outermost first longitudinal bar 512 and the second grid 520. The second plate 420 is disposed on the inner surface of the second grid 520. The first plate 410 and the second plate 420 are formed by bending the same plastic sheet, and an arc-shaped plate 430 is formed between the first plate 410 and the second plate 420.

[0039] The holes of the geotextile tie bar 600 are hooked onto the second hook 5110.

[0040] In the directions mentioned above, the horizontal direction is along the x-axis, the vertical direction is along the y-axis, and the longitudinal direction is along the z-axis.

[0041] Example 2

[0042] Figure 4 This is a schematic diagram of the multi-level grid panel reinforced soil retaining wall structure in this embodiment.

[0043] Compared with Example 1, the multi-level grid panel reinforced soil retaining wall structure of this embodiment differs in that: Figure 4 As shown, the angle between the first grid 510 and the second grid 520 is an acute angle.

[0044] The foregoing has described the relevant content of this utility model. Those skilled in the art will be able to implement this utility model based on these descriptions. All other embodiments obtained by those skilled in the art based on the above description of this utility model without inventive effort should fall within the protection scope of this utility model.

Claims

1. A multi-level grid panel reinforced soil retaining wall structure, comprising multi-level retaining units arranged sequentially from bottom to top; characterized in that: Each level of support unit includes a fill layer (300), a retaining plate assembly (400) connected to the outside of the fill layer (300), a grid assembly (500), and a geogrid (600) located at the bottom of the fill layer (300) and connected to the inner end of the grid assembly (500). The grid assembly (500) includes a first grid (510) and a second grid (520); the first grid (510) is located at the bottom outside the fill layer (300), and the second grid (520) is located on the end face outside the fill layer (300); The retaining plate assembly (400) is located inside the grid assembly (500) and matches the shape of the grid assembly (500).

2. The multi-level grid panel reinforced soil retaining wall structure as described in claim 1, characterized in that: The grid assembly (500) is formed by splicing grid units with a length of 2-3m along the longitudinal direction; the retaining plate assembly (400) is formed by splicing retaining plate units with a length of 2-3m along the longitudinal direction; the longitudinal splicing joints between the grid units and the longitudinal splicing joints between the retaining plate units are staggered.

3. The multi-level grid panel reinforced soil retaining wall structure as described in claim 1, characterized in that: The first grid (510) includes horizontal bars (511) arranged at intervals and staggered and a first longitudinal bar (512); the second grid (520) includes vertical bars (521) arranged at intervals and staggered and a second longitudinal bar (522).

4. The multi-level grid panel reinforced soil retaining wall structure as described in claim 3, characterized in that: The horizontal bar (511) and the vertical bar (521) are formed by bending the same steel bar.

5. The multi-level grid panel reinforced soil retaining wall structure as described in claim 4, characterized in that: The width and height of the grid component (500) are 30~60cm; the spacing between the horizontal bars (511) is 5~10cm; the spacing between the first longitudinal bars (512) and the second longitudinal bars (522) is greater than the spacing between the horizontal bars (511).

6. The multi-level grid panel reinforced soil retaining wall structure as described in claim 3, characterized in that: The grid assembly (500) also includes diagonal bars (530) spaced longitudinally, the lower end of which is connected to the innermost first longitudinal bar (512), and the upper end of which is connected to the top second longitudinal bar (522).

7. The multi-level grid panel reinforced soil retaining wall structure as described in claim 6, characterized in that: The upper and lower ends of the diagonal bar (530) are provided with first hooks (531); the spacing between the diagonal bars (530) is greater than the spacing between the horizontal bars (511).

8. The multi-level grid panel reinforced soil retaining wall structure as described in claim 3, characterized in that: The inner end of the transverse bar (511) is provided with a second hook (5110), and the hole of the geotextile tie bar (600) is hooked to the second hook (5110); the distance between the innermost first longitudinal bar (512) and the inner end of the second hook (5110) is 10~50cm.

9. The multi-level grid panel reinforced soil retaining wall structure as described in claim 3, characterized in that: The retaining plate assembly (400) includes a first plate (410) and a second plate (420), the first plate (410) being disposed on the upper surface of the first grid (510) and the second plate (420) being disposed on the inner surface of the second grid (520).

10. The multi-level grid panel reinforced soil retaining wall structure as described in claim 9, characterized in that: The first plate (410) is located between the outermost first longitudinal bar (512) and the second grid (520); the first plate (410) and the second plate (420) are formed by bending the same plastic plate, and an arc plate (430) is formed between the first plate (410) and the second plate (420).

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