Modularized prefabricated concrete retaining wall structure

Abstract

The utility model belongs to the technical field of highway engineering and ecological protection, and discloses a modular prefabricated concrete retaining wall structure which comprises a cast-in-place foundation and a stop assembly, the cast-in-place foundation is arranged on one side of an embankment, and the upper end face of the cast-in-place foundation inclines along the side close to the embankment. The stop assembly is arranged on the upper end face of the cast-in-place foundation and comprises a plurality of prefabricated box bodies stacked in a staggered mode, and each prefabricated box body is provided with a containing cavity. The multiple prefabricated concrete wedges are inserted into the containing cavities and abut against the adjacent prefabricated box bodies, and the overall stability is ensured. The prefabricated box body and the prefabricated concrete wedge are produced in a standardized mode, the quality is controllable, the box body and the prefabricated concrete wedge can be directly and rapidly assembled on site, and construction efficiency is improved. And through the arrangement of the accommodating cavity, the material consumption of the prefabricated box body can be reduced, and the construction cost can be reduced. The containing cavity is filled with the filler, large-size stone or concrete can be replaced, and more energy conservation and environment protection are achieved. Vegetation is arranged in the prefabricated box body located on the top, and the ecological landscape greening effect is achieved.

Description

Technical Field

[0001] This utility model relates to the fields of highway engineering and ecological protection technology, and in particular to a modular precast concrete retaining wall structure. Background Technology

[0002] Retaining walls, as the core support structure, are widely used in slope stabilization protection, terrain slope reduction, and road section improvement with limited land use. Their core function is to balance the lateral pressure of the soil, prevent the instability and collapse of the soil and rock mass, and optimize the road alignment layout.

[0003] There are various types of retaining wall structures, which differ significantly in terms of material properties, construction efficiency, and environmental adaptability. Gravity retaining walls constructed with masonry or concrete rely on their own weight to resist earth pressure. While they are simple to construct and stable against overturning, they consume excessive resources. Large cross-sectional dimensions result in high concrete usage, and the need to quarry large quantities of natural boulders leads to the waste of non-renewable resources. On-site wet casting can pollute the environment and has a long construction period; furthermore, they have a low tolerance for uneven foundation settlement and are prone to structural cracks in areas with weak foundations. Gabion retaining walls, composed of wire mesh boxes and boulders, offer advantages such as good permeability and convenient construction. However, the wire mesh, exposed to the natural environment for extended periods, is prone to corrosion and strength loss. Weathering and disintegration of the material lead to smaller particle sizes, causing filler loss when the particle size is smaller than the mesh size. Utility Model Content

[0004] The purpose of this utility model is to provide a modular precast concrete retaining wall structure that has high structural durability, is energy-saving and environmentally friendly, and helps to improve construction efficiency. At the same time, it has the advantages of being ecological and environmentally friendly.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A modular precast concrete retaining wall structure is provided, comprising:

[0007] A cast-in-place foundation is provided on one side of the embankment, and the upper surface of the cast-in-place foundation is inclined along the side closer to the embankment.

[0008] A stop assembly is disposed on the upper surface of the cast-in-place foundation, the stop assembly comprising:

[0009] Multiple prefabricated boxes are stacked in a staggered manner, the prefabricated boxes abut against the embankment, the prefabricated boxes have accommodating chambers, the accommodating chambers are filled with filler; the prefabricated box at the top is filled with vegetation;

[0010] Multiple precast concrete wedges are inserted into the accommodating cavity and abut against the adjacent precast box.

[0011] As an optional solution for modular precast concrete retaining wall structures, geotextile is installed between each precast box and the embankment.

[0012] As an optional solution for modular precast concrete retaining wall structures, the upper surface of the cast-in-place foundation is lower than the original ground level.

[0013] As an optional solution for modular precast concrete retaining wall structures, each of the precast boxes is provided with multiple accommodating chambers at intervals, and each accommodating chamber is provided with at least two of the precast concrete wedges.

[0014] As an optional solution for modular precast concrete retaining wall structures, the fill material is waste soil or building aggregate.

[0015] As an optional solution for modular precast concrete retaining wall structures, the outer peripheral wall of the precast box and / or the outer peripheral wall of the precast concrete wedge are provided with anti-slip structures.

[0016] As an optional solution for modular precast concrete retaining wall structures, the precast concrete wedge is equipped with an operating part.

[0017] As an optional solution for modular precast concrete retaining wall structures, the vegetation is hanging vegetation.

[0018] The beneficial effects of this utility model are:

[0019] This invention provides a modular precast concrete retaining wall structure. Multiple staggered precast boxes abut against the embankment, forming a stepped structure inclined towards the embankment at a certain angle. Precast concrete wedges inserted into the lower precast boxes form a shear-resistant interlocking structure with the upper precast boxes, improving the overall stability of the structure. The precast boxes and precast concrete wedges are produced using standardized methods, ensuring quality control, and can be quickly assembled on-site, improving construction efficiency. The inclusion chambers reduce the amount of material used in the precast boxes, thus lowering construction costs. The inclusion chambers are filled with filler material, replacing large volumes of stone or concrete, making it more energy-efficient and environmentally friendly. The vegetation placed in the top precast boxes provides an ecological landscaping effect. Attached Figure Description

[0020] Figure 1 This is a side view of the modular precast concrete retaining wall structure provided in the specific embodiments of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the stop assembly provided in a specific embodiment of this utility model;

[0022] Figure 3 This is a top view of the prefabricated box body provided in a specific embodiment of this utility model.

[0023] In the picture:

[0024] 100. Embankment; 101. Slope; 200. Original ground surface;

[0025] 1. Cast-in-place foundation;

[0026] 2. Stop assembly; 21. Precast box; 210. Receiving chamber; 211. Filling material; 22. Precast concrete wedge;

[0027] 3. Geotextile. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1 to 3 As shown, this embodiment provides a modular precast concrete retaining wall structure, including a cast-in-place foundation 1 and a stop assembly 2. The cast-in-place foundation 1 is located on one side of an embankment 100, with its upper surface inclined towards the side closest to the embankment 100. The stop assembly 2 is located on the upper surface of the cast-in-place foundation 1 and includes multiple staggered precast boxes 21. Each precast box 21 abuts against the embankment 100, forming a stepped shape inclined towards the embankment 100, and has a certain tilt angle to reduce back soil pressure. Each precast box 21 has a receiving chamber 210; multiple precast concrete wedges 22 are inserted into the receiving chamber 210 and abut against adjacent precast boxes 21. That is, the precast concrete wedges 22 inserted into the lower precast box 21 and the upper precast box 21 form a shear-resistant interlocking structure, improving the overall stability of the structure. Furthermore, the precast box 21 and precast concrete wedges 22 are produced using standardized methods, ensuring quality control. They can also be quickly assembled on-site, improving construction efficiency. Additionally, the inclusion of the accommodating chamber 210 reduces the material usage of the precast box 21, thus lowering construction costs. The accommodating chamber 210 is filled with filler material 211, which can be made from waste soil or building aggregates, replacing large volumes of stone or concrete, making it more energy-efficient and environmentally friendly. The precast box 21 located at the top is equipped with vegetation, providing an ecological landscaping effect.

[0034] Specifically, both the precast box 21 and the precast concrete wedge 22 are made of concrete.

[0035] Optionally, each precast box 21 is provided with multiple receiving chambers 210 at intervals, and each receiving chamber 210 is provided with at least two precast concrete wedges 22. The arrangement of multiple receiving chambers 210 can save material usage as much as possible, while ensuring the strength of the precast box 21.

[0036] In this specific embodiment, each precast box 21 is provided with two accommodating chambers 210 at intervals, and each accommodating chamber 210 is provided with two precast concrete wedges 22 at intervals; in other embodiments, the number of accommodating chambers 210 and precast concrete wedges 22 can be set as needed, and no specific limitation is made here.

[0037] Alternatively, in other embodiments, the precast box 21 may be provided with only one receiving chamber 210, and each receiving chamber 210 may be provided with a plurality of precast concrete wedges 22 at intervals.

[0038] Optionally, the outer peripheral walls of the precast box 21 and / or the outer peripheral walls of the precast concrete wedge 22 are provided with anti-slip structures to increase the contact friction between two adjacent precast box 21s and the contact friction between the precast concrete wedge 22 and the inner wall of the accommodating chamber 210, thereby improving the overall structural stability of the stop assembly 2. Specifically, the anti-slip structure can be anti-slip protrusions, which can be dot-shaped protrusions or textured protrusions of any shape, as long as they can increase contact friction. The specific form is similar to that in the prior art and is not specifically limited in this embodiment.

[0039] Optionally, the precast concrete wedge 22 is equipped with an operating part (not shown in the figure) to facilitate workers in handling the precast concrete wedge 22 and improve construction efficiency. Specifically, the operating part can be a handle or a carrying handle.

[0040] Optionally, a geotextile 3 is installed between each precast box 21 and the embankment 100. On the one hand, the geotextile 3 can prevent soil from one side of the embankment 100 from seeping into the receiving chamber 210 of the precast box 21 and between two adjacent precast boxes 21, ensuring the structural stability of the retaining component 2. On the other hand, the geotextile 3 and the receiving chamber 210 of the precast box 21 can form a directional drainage channel for water seepage from the back side of the soil. That is, after rainwater falls to the top slope 101 of the embankment 100, it directly enters the receiving chamber 210 of the top precast box 21. The geotextile 3 on one side of the embankment 100 can achieve drainage while also preventing soil from being lost with the flow of water, thus achieving mechanical slope stabilization.

[0041] Optionally, filler 211 can be waste soil or building aggregate, which is more energy-efficient and environmentally friendly. Specific materials can be adapted to local conditions to reduce dependence on specific materials.

[0042] Optionally, the filler 211 is filled in layers and compacted with a plate rammer to ensure that there is sufficient space for subsequent rainwater flow and that the filler 211 will not move with the flow of rainwater.

[0043] Optionally, the upper surface of the cast-in-place foundation 1 is lower than the original ground level by 200, that is, the bottommost precast box 21 rests against the embankment 100 on one side and against the road on the other side to ensure its stability, thereby ensuring the stability of the stop assembly 2.

[0044] Optionally, the vegetation can be hanging vegetation. On the one hand, it can cover the barrier component 2, reduce the erosion of the barrier component 2 by wind and rain, delay aging, and improve the greening effect; on the other hand, it can also effectively prevent the filling material 211 in the top housing wall from being lost.

[0045] For example, the construction process of this modular precast concrete retaining wall structure is as follows:

[0046] First, the foundation pit is excavated, and then the cast-in-place foundation 1 is constructed, i.e., on-site pouring. After the cast-in-place foundation 1 is completed, the precast box 21 is hoisted to the upper surface of the cast-in-place foundation 1 using external hoisting equipment. At the same time, geotextile 3 is placed, and filler 211 is placed into the accommodating chamber 210. Then, another precast box 21 is hoisted and stacked staggered on the bottom precast box 21. Multiple precast concrete wedges 22 are then inserted at intervals into the accommodating chamber 210 of the bottom precast box 21 and abut against the side wall of the upper precast box 21. Filler 211 is then placed into the accommodating chamber 210 of the upper precast box 21. According to actual needs, multiple precast box 21s are hoisted in sequence, and corresponding precast concrete wedges 22 and geotextile 3 are placed until the design top elevation of the retaining wall is reached. Then, humus soil is filled into the accommodating chamber 210 of the top precast box 21, and vegetation is planted. Finally, the foundation pit was backfilled to restore the original ground level to 200mm.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A modular precast concrete retaining wall structure, characterized in that, include: A cast-in-place foundation (1) is provided on one side of the embankment (100), and the upper surface of the cast-in-place foundation (1) is inclined along the side close to the embankment (100); A stop assembly (2) is disposed on the upper end face of the cast-in-place foundation (1), the stop assembly (2) comprising: Multiple prefabricated boxes (21) stacked in a staggered manner, the prefabricated boxes (21) abutting against the embankment (100), the prefabricated boxes (21) having accommodating chambers (210), the accommodating chambers (210) being filled with filler (211); the prefabricated box (21) at the top is filled with vegetation; Multiple precast concrete wedges (22) are inserted into the accommodating chamber (210) and abut against the adjacent precast box (21).

2. The modular precast concrete retaining wall structure according to claim 1, characterized in that, Geotextile (3) is provided between each of the precast box (21) and the embankment (100).

3. The modular precast concrete retaining wall structure according to claim 1, characterized in that, The upper surface of the cast-in-place foundation (1) is lower than the original ground surface (200).

4. The modular precast concrete retaining wall structure according to claim 1, characterized in that, Each of the precast box bodies (21) is provided with a plurality of accommodating chambers (210) spaced apart, and each accommodating chamber (210) is provided with at least two of the precast concrete wedges (22).

5. The modular precast concrete retaining wall structure according to claim 1, characterized in that, The filler (211) is waste soil or building aggregate.

6. The modular precast concrete retaining wall structure according to any one of claims 1-5, characterized in that, The outer periphery of the precast box (21) and / or the outer periphery of the precast concrete wedge (22) are provided with anti-slip structures.

7. The modular precast concrete retaining wall structure according to any one of claims 1-5, characterized in that, The precast concrete wedge (22) is equipped with an operating part.

8. The modular precast concrete retaining wall structure according to any one of claims 1-5, characterized in that, The vegetation is hanging vegetation.

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