A prefabricated retaining wall for roadbed support

Abstract

This invention relates to the field of retaining wall technology and proposes a prefabricated retaining wall for roadbed support, which is constructed of concrete blocks. The concrete blocks have a first wall and a second wall, which are laterally opposite to each other. They also have a third wall and a fourth wall, which are longitudinally opposite to each other and respectively connect the first wall to the second wall. The first wall has a first locking portion, and the second wall has a first insert portion; the third wall has a second locking portion, and the fourth wall has a second insert portion. The first insert portion of two laterally adjacent concrete blocks abuts against the first locking portion; the second insert portion of two longitudinally adjacent concrete blocks abuts against the second locking portion. This technical solution solves the problems of long construction cycles and high construction difficulty in existing on-site cast-in-place concrete retaining walls.

Description

Technical Field

[0001] This invention relates to the field of retaining wall technology, specifically to a prefabricated retaining wall for roadbed support. Background Technology

[0002] Retaining walls, as key structural elements for preventing soil collapse and maintaining soil stability, play an indispensable role in many important fields. In construction engineering, they provide support for various buildings, ensuring their safety and stability; in landscaping, retaining walls divide space, shape terrain, and add layers and three-dimensionality to the landscape; in water conservancy projects, they resist the erosion of riverbanks by water flow, protecting water conservancy facilities and the surrounding ecological environment; in highway engineering, retaining walls ensure the stability of road slopes, providing safe passage for vehicles; and in bridge engineering, retaining walls work in conjunction with the bridge structure to jointly maintain the stability of the bridge foundation.

[0003] Traditional retaining walls typically employ on-site construction techniques, requiring a series of steps including formwork erection, in-situ pouring, and curing. These steps are not only time-consuming but also significantly impact project progress. For example, formwork erection requires substantial manpower and time for installation and adjustment, and the accuracy and stability of the formwork are difficult to guarantee, leading to deviations and deformations that affect the quality of the retaining wall. In in-situ pouring, concrete mixing, transportation, and pouring all need to be carried out on-site, which is not only inefficient but also susceptible to weather and traffic disruptions, causing construction interruptions and delays. The curing process is even more lengthy, lasting several days or even weeks, during which the construction site needs to be closed off and protected, impacting surrounding traffic and the environment.

[0004] Furthermore, traditional on-site construction of retaining walls has a significant impact on the construction site and surrounding environment. On the one hand, the noise, dust, and construction waste generated during construction pollute and disturb the lives and environment of nearby residents. On the other hand, the large amount of construction equipment and materials stored up occupies a significant amount of space, affecting traffic and the construction of other projects in the surrounding area. Moreover, the quality of on-site constructed retaining walls is difficult to guarantee, and problems such as cracks and leaks are prone to occur, requiring subsequent maintenance and reinforcement, which increases the cost and difficulty of the project. Summary of the Invention

[0005] This invention proposes a prefabricated retaining wall for roadbed support, which solves the problems of long construction cycle and high construction difficulty of on-site cast-in-place concrete retaining walls in related technologies.

[0006] The technical solution of the present invention is as follows:

[0007] A prefabricated retaining wall for roadbed support, which is constructed of concrete blocks;

[0008] The concrete block has a first wall and a second wall, which are arranged laterally opposite to each other.

[0009] It also has a third wall and a fourth wall, the third wall and the fourth wall being arranged longitudinally opposite each other, and respectively connecting the first wall to the second wall;

[0010] The first wall has a first snap-fit ​​portion, and the second wall has a first insertion portion;

[0011] The third wall has a second snap-fit ​​portion, and the fourth wall has a second insertion portion;

[0012] The first insertion portion of two horizontally adjacent concrete blocks abuts against the first snap-fit ​​portion;

[0013] The second insertion portion of two longitudinally adjacent concrete blocks abuts against the second snap-fit ​​portion.

[0014] Optionally, the concrete block also has a fifth wall and a sixth wall;

[0015] The fifth wall and the sixth wall are arranged vertically opposite each other, and respectively connect the first wall to the second wall, the third wall, and the fourth wall;

[0016] The fifth wall has a first mounting groove, the sixth wall has a third insertion part and a third snap-fit ​​part, and further includes:

[0017] A snap-fit ​​rod is rotatably disposed in the first mounting groove. One end of the snap-fit ​​rod has a fourth insertion part. After the fifth wall and the sixth wall of two vertically adjacent concrete blocks are brought close together, the third insertion part abuts against the other end of the snap-fit ​​rod, causing the snap-fit ​​rod to rotate and causing the fourth insertion part to abut against the third snap-fit ​​part.

[0018] Optionally, the fifth wall further has a first groove, and the sixth wall further has a first protrusion;

[0019] After the fifth wall and the sixth wall of two adjacent vertical concrete blocks abut together, the first groove abuts against the first protrusion.

[0020] Optionally, the first protruding surface is an arc surface, and the shape of the first groove is adapted to the first protrusion.

[0021] Optionally, the first protrusion and the first groove coincide with the center of the concrete block.

[0022] Optionally, the concrete block has a first cavity at its center, the first cavity connecting the first protrusion and the first groove.

[0023] Optionally, it also includes:

[0024] The connecting bar has external threads at both ends, is disposed inside the first cavity, and coincides with the center of the concrete block;

[0025] A connecting nut is threaded onto one end of the connecting rib. After the fifth and sixth walls of two adjacent vertical concrete blocks abut against each other, the end faces of the two connecting ribs abut against each other. The connecting nut can restrict or release the position of the two connecting ribs after rotation.

[0026] Optionally, the connecting nut has a first tooth on its outer side, and the concrete block also has a first groove that penetrates the concrete block;

[0027] After several concrete blocks abut against each other, several first sliding grooves are interconnected to form a sliding track. The sliding rack is slidably disposed in the sliding track. The sliding rack meshes with the first wheel teeth. After the sliding rack slides, it drives the connecting nut to rotate.

[0028] Optionally, both the first plug-in portion and the second plug-in portion are T-shaped, and the shapes of the first snap-fit ​​portion and the second snap-fit ​​portion are respectively adapted to the first plug-in portion and the second plug-in portion.

[0029] Optionally, several of the concrete blocks abut against each other to form a wall surface, a wall base, and a buttress.

[0030] The working principle and beneficial effects of this invention are as follows:

[0031] In this invention, to address the problems of long construction cycles and high construction difficulty in on-site cast-in-place concrete retaining walls, a prefabricated retaining wall for roadbed support is designed. First, multiple concrete blocks are manufactured in a factory strictly according to design specifications. The first wall of these concrete blocks has a first interlocking part, the shape and size of which are precisely calculated to ensure a perfect fit with the first interlocking part on the second wall. Similarly, the second interlocking parts on the third and fourth walls also possess high precision. At the construction site, workers place the concrete blocks one by one into position. When making lateral connections, the first interlocking part of one concrete block is inserted into the first interlocking part of the adjacent concrete block, ensuring a tight fit without gaps. The same method is used for longitudinal connections, ensuring accurate alignment of the second interlocking parts with the second interlocking parts. As the concrete blocks are connected one by one, the basic shape of the retaining wall gradually emerges.

[0032] The advantage lies in the fact that this snap-fit ​​and plug-in connection method greatly simplifies the assembly process of the retaining wall. Construction workers no longer need to use numerous bolts; they simply need to assemble the concrete blocks in the correct orientation. This not only improves construction efficiency and shortens the project cycle but also reduces construction costs. Simultaneously, this connection method provides stable support in all directions, effectively preventing loosening and displacement of the retaining wall during use. Even under high soil pressure, the retaining wall maintains a stable structure, providing reliable protection for the roadbed. Attached Figure Description

[0033] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of the present invention.

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the concrete block structure of the present invention;

[0036] Figure 3 This is a schematic diagram of the concrete block structure from another angle of the present invention;

[0037] Figure 4 This is a cross-sectional view of the concrete block of the present invention;

[0038] Figure 5 This is another cross-sectional view of the concrete block of the present invention;

[0039] Figure 6 This is a cross-sectional view of the present invention.

[0040] In the diagram: 1. Concrete block; 11. First wall; 12. Second wall; 13. Third wall; 14. Fourth wall; 111. First snap-fit ​​part; 121. First insertion part; 131. Second snap-fit ​​part; 141. Second insertion part; 15. Fifth wall; 16. Sixth wall; 151. First mounting groove; 161. Third insertion part; 162. Third snap-fit ​​part; 2. Snap-fit ​​rod; 21. Fourth insertion part; 152. First groove; 163. First protrusion; 17. First cavity; 3. Connecting rib; 4. Connecting nut; 41. First gear tooth; 18. First slide groove; 5. Sliding rack; 181. Slide. Detailed Implementation

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0042] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0043] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] Reference Figures 1-6 In the first embodiment of the present invention, a prefabricated retaining wall for roadbed support is proposed, which is constructed of concrete blocks 1. The concrete blocks 1 have a first wall 11 and a second wall 12, which are arranged laterally opposite to each other. They also have a third wall 13 and a fourth wall 14, which are arranged longitudinally opposite to each other, and respectively connect the first wall 11 to the second wall 12. The first wall 11 has a first snap-fit ​​portion 111, and the second wall 12 has a first insertion portion 121. The third wall 13 has a second snap-fit ​​portion 131, and the fourth wall 14 has a second insertion portion 141. The first insertion portion 121 of two laterally adjacent concrete blocks 1 abuts against the first snap-fit ​​portion 111. The second insertion portion 141 of two longitudinally adjacent concrete blocks 1 abuts against the second snap-fit ​​portion 131.

[0046] In this embodiment, to address the problems of long construction cycles and high construction difficulty in on-site cast-in-place concrete retaining walls in related technologies, a prefabricated retaining wall for roadbed support is designed. First, multiple concrete blocks 1 are manufactured in a factory strictly according to design specifications. The first wall 11 of these concrete blocks 1 has a first interlocking part 111, the shape and size of which are precisely calculated to ensure a perfect fit with the first interlocking part 121 on the second wall 12. Similarly, the second interlocking part 131 on the third wall 13 and the second interlocking part 141 on the fourth wall 14 also possess high precision. At the construction site, construction workers place the concrete blocks 1 one by one into position. When making lateral connections, the first interlocking part 121 of one concrete block 1 is inserted into the first interlocking part 111 of the adjacent concrete block 1, ensuring a tight fit without gaps. The same method is used for longitudinal connections, ensuring accurate alignment of the second interlocking part 141 with the second interlocking part 131. As the concrete blocks 1 are connected one by one, the basic shape of the retaining wall gradually emerges.

[0047] The advantage lies in the fact that this snap-fit ​​and plug-in connection method greatly simplifies the assembly process of the retaining wall. Construction workers no longer need to use numerous bolts; they simply need to assemble the concrete blocks 1 in the correct orientation. This not only improves construction efficiency and shortens the project cycle but also reduces construction costs. Simultaneously, this connection method provides stable support in all directions, effectively preventing loosening and displacement of the retaining wall during use. Even under high soil pressure, the retaining wall maintains a stable structure, providing reliable protection for the roadbed.

[0048] Furthermore, the concrete block 1 also has a fifth wall 15 and a sixth wall 16; the fifth wall 15 and the sixth wall 16 are arranged vertically opposite each other, and respectively connect the first wall 11 to the second wall 12, the third wall 13, and the fourth wall 14; the fifth wall 15 has a first mounting groove 151, the sixth wall 16 has a third insertion part 161 and a third snap-fit ​​part 162, and also includes a snap-fit ​​rod 2 rotatably disposed in the first mounting groove 151. One end of the snap-fit ​​rod 2 has a fourth insertion part 21. After the fifth wall 15 and the sixth wall 16 of two vertically adjacent concrete blocks 1 are vertically close, the third insertion part 161 abuts against the other end of the snap-fit ​​rod 2, causing the snap-fit ​​rod 2 to rotate, so that the fourth insertion part 21 abuts against the third snap-fit ​​part 162.

[0049] In this embodiment, the fifth wall 15 and the sixth wall 16 of the concrete block 1 play a crucial role in the vertical connection of the retaining wall. The first mounting groove 151 on the fifth wall 15 provides an installation position for the snap-fit ​​rod 2. The snap-fit ​​rod 2 is precisely installed in the first mounting groove 151 during factory production, ensuring that it can rotate freely. During vertical assembly, the construction workers slowly bring the fifth wall 15 and the sixth wall 16 of the two concrete blocks 1 closer together. At this time, the third insertion part 161 on the sixth wall 16 first contacts one end of the snap-fit ​​rod 2, and as it continues to move closer, it pushes the snap-fit ​​rod 2 to rotate. When it has rotated to the correct position, the fourth insertion part 21 at one end of the snap-fit ​​rod 2 tightly abuts against the third snap-fit ​​part 162 on the sixth wall 16, completing the vertical connection. This process requires careful operation by the construction workers to ensure accurate alignment of each component.

[0050] The advantage lies in increasing the reliability of the vertical connection, enabling the retaining wall to withstand greater soil pressure in the vertical direction. The snap-fit ​​rod 2 provides additional support for the vertical connection, effectively preventing separation or misalignment between vertically adjacent concrete blocks 1. This connection method improves the overall stability of the retaining wall, ensuring its safety and reliability even under complex geological conditions or uneven soil pressure.

[0051] Furthermore, the fifth wall 15 also has a first groove 152, and the sixth wall 16 also has a first protrusion 163; after the fifth wall 15 and the sixth wall 16 of two adjacent vertical concrete blocks 1 come into contact, the first groove 152 and the first protrusion 163 come into contact.

[0052] In this embodiment, the fifth wall 15 and the sixth wall 16 were specially treated during the design and production process of the concrete block 1. A first groove 152 was machined into the fifth wall 15, the shape and depth of which were strictly designed. At the same time, a first protrusion 163 was correspondingly provided on the sixth wall 16. During vertical assembly, the construction workers accurately aligned the fifth wall 15 and the sixth wall 16 of the two concrete blocks 1, so that the first groove 152 and the first protrusion 163 abutted against each other.

[0053] The advantage is that it further enhances the tightness of the vertical connection, effectively preventing relative displacement between vertically adjacent concrete blocks 1. The cooperation between the first groove 152 and the first protrusion 163 is like the various parts of a jigsaw puzzle, fitting together to form a whole in the vertical direction of the retaining wall. This connection method improves the overall structural stability of the retaining wall, enabling it to better resist the pressure of the soil and the influence of the external environment.

[0054] Furthermore, the surface of the first protrusion 163 is curved, and the shape of the first groove 152 is adapted to the first protrusion 163.

[0055] In this embodiment, to improve the fit between the first protrusion 163 and the first groove 152, the surface of the first protrusion 163 is designed as an arc. Simultaneously, the shape of the first groove 152 is precisely designed according to the arc surface of the first protrusion 163, allowing it to perfectly fit the arc surface. During assembly, the arc surface design makes it easier for the first protrusion 163 to engage with the first groove 152. Construction workers only need to gently push the concrete block 1, and the first protrusion 163 can slide into the first groove 152 along the arc surface, greatly improving the convenience of construction.

[0056] The advantages are that the curved surface design not only facilitates installation but also disperses stress to a certain extent. When the retaining wall is subjected to soil pressure, the curved surface can evenly distribute the pressure to the surrounding concrete blocks 1, reducing the risk of damage caused by stress concentration. This design makes the retaining wall more stable and reliable during long-term use, extending its service life.

[0057] Furthermore, the first protrusion 163 and the first groove 152 coincide with the center of the concrete block 1.

[0058] In this embodiment, high-precision molds and advanced production processes are used during the production of concrete block 1 to ensure that the first protrusion 163 and the first groove 152 precisely coincide with the center of concrete block 1. From the design stage, the positions of each component are rigorously calculated and planned. During production, precise positioning and control ensure the accurate placement of the first protrusion 163 and the first groove 152. During assembly, construction personnel also need to carefully check and adjust the position of concrete block 1 to ensure that the first protrusion 163 and the first groove 152 can accurately align.

[0059] The advantage is that this design makes the retaining wall more evenly stressed in all directions. When soil pressure acts on the retaining wall, because the first protrusion 163 and the first groove 152 coincide with the center of the concrete block 1, the pressure can be evenly transmitted to each concrete block 1, avoiding excessive local stress. This improves the overall stability and load-bearing capacity of the retaining wall, enabling it to better withstand soil pressure and the influence of the external environment. At the same time, it also facilitates quality control during production and assembly, reducing problems such as loose connections or structural instability caused by positional deviations.

[0060] Furthermore, the concrete block 1 has a first cavity 17 at its center, which connects the first protrusion 163 and the first groove 152.

[0061] In this embodiment, during the design and production stages of the concrete block 1, the convenience of transportation and the need for structural reinforcement were fully considered, and a first cavity 17 was carefully set in the center of the concrete block 1. From a design perspective, the size and shape of the first cavity 17 were determined through precise calculations, minimizing its weight while ensuring the basic strength of the concrete block 1. During the production process, advanced concrete pouring technology was adopted to ensure the molding quality of the first cavity 17 and the overall structural stability of the concrete block 1. When transported to the construction site for retaining wall assembly, after several concrete blocks 1 were joined together to form the initial retaining wall structure according to the design requirements, the concrete pouring equipment was prepared. Concrete was slowly poured into the first cavity 17. During the pouring process, the flow rate and pouring volume of the concrete were strictly controlled to ensure that the concrete fully filled the first cavity 17 without creating voids or air bubbles. After the concrete solidified, the individual concrete blocks 1 inside the retaining wall were connected into a whole by the concrete.

[0062] The advantages are twofold. First, the design of the first cavity 17 significantly reduces the weight of the concrete blocks 1, making transportation more convenient and efficient, and lowering transportation costs. For construction projects in areas with inconvenient transportation or remote locations, the lightweight concrete blocks 1 reduce transportation difficulties and costs. Simultaneously, on the construction site, the lighter concrete blocks 1 are easier for construction workers to handle and operate, improving construction efficiency. Second, after assembly, pouring concrete into the first cavity 17 transforms the retaining wall into a single unit, greatly enhancing the overall structural stability. After the concrete hardens, it tightly connects the individual concrete blocks 1 together, enhancing the retaining wall's ability to withstand soil pressure. Even under complex geological conditions or when subjected to significant soil pressure, this concrete-reinforced retaining wall remains stable and reliable, extending its service life and providing a more robust guarantee for roadbed support.

[0063] Furthermore, it also includes a connecting rib 3, which has external threads at both ends. The connecting rib 3 is located inside the first cavity 17 and coincides with the center of the concrete block 1. The connecting rib 3 is threaded on one end of the connecting rib 3. After the fifth wall 15 and the sixth wall 16 of two adjacent vertical concrete blocks 1 abut, the end faces of the two connecting ribs 3 abut. After the connecting nut 4 is rotated, it restricts or releases the position of the two connecting ribs 3.

[0064] In this embodiment, the connecting bar 3 is an important component of the vertical connection of the retaining wall. The connecting bar 3 is made of high-strength steel, with external threads machined at both ends. During the production of the concrete block 1, the connecting bar 3 is accurately positioned inside the first cavity 17, aligning with the center of the concrete block 1. The connecting nut 4 is also made of high-strength material, with threads matching the external threads of the connecting bar 3. When the fifth wall 15 and sixth wall 16 of two adjacent vertical concrete blocks 1 abut against each other, the end faces of the two connecting bars 3 also come into contact. At this point, the construction worker screws the connecting nut 4 onto one end of the connecting bar 3, gradually tightening it by rotating the connecting nut 4, thereby restricting the position of the two connecting bars 3 and further reinforcing the vertical connection.

[0065] The advantage is that the connecting bar 3 and connecting nut 4 further enhance the stability of the vertical connection. Under conditions of high soil pressure or harsh external environment, the connecting bar 3 can withstand greater tensile and shear forces, effectively preventing separation between vertically adjacent concrete blocks 1.

[0066] Furthermore, the outer side of the connecting nut 4 has a first gear tooth 41, and the concrete block 1 also has a first sliding groove 18, which penetrates the concrete block 1; a sliding rack 5, after several concrete blocks 1 abut against each other, several first sliding grooves 18 are interconnected to form a slide 181, the sliding rack 5 is slidably set in the slide 181, the sliding rack 5 meshes with the first gear tooth 41, and after the sliding rack 5 slides, it drives the connecting nut 4 to rotate.

[0067] In this embodiment, to improve the installation efficiency and ease of operation of the connecting nut 4, a first gear tooth 41 is provided on the outer side of the connecting nut 4. Simultaneously, a first sliding groove 18 is provided on the concrete block 1, penetrating the concrete block 1. The position and size of this first sliding groove 18 are carefully designed to correspond to the position of the connecting nut 4. When several concrete blocks 1 abut against each other, several first sliding grooves 18 connect to form a sliding track 181. A sliding rack 5 is prepared, made of high-strength material, with a width and thickness matching the sliding track 181. The sliding rack 5 is slid into the sliding track 181 from one end. During the sliding process, because the sliding rack 5 meshes with the first gear tooth 41, its movement drives the connecting nut 4 to rotate. The sliding rack 5 is continuously pushed until the connecting nut 4 is tightened in place, achieving further reinforcement of the vertical connection. After the connecting nut 4 is installed, the sliding rack 5 can be slid out from the other end of the sliding track 181. Furthermore, the design of the sliding track 181 plays another important role in the use of the retaining wall. When a drainage pipe needs to be installed, slide rail 181 can serve as an installation hole. According to the specifications and installation requirements of the drainage pipe, it is processed and installed at the corresponding position on slide rail 181, ensuring that the drainage pipe can be accurately installed in the retaining wall. This ensures that the retaining wall can effectively drain water during use and prevents water accumulation from damaging the retaining wall structure.

[0068] The advantages are twofold. First, the operation of the sliding rack 5 significantly improves the efficiency of installing and removing the connecting nuts 4, saving construction time. The movement of the sliding rack 5 allows for the simultaneous adjustment of multiple connecting nuts 4, avoiding the tedious process of tightening each nut individually. This is particularly beneficial for large-scale retaining wall construction projects, significantly improving construction efficiency and shortening the project cycle. Second, after completing the installation of the connecting nuts 4, the slide rail 181 can also serve as an installation hole for the drainage pipe, fully utilizing its multi-functional role. This design makes the drainage system of the retaining wall more complete, enabling timely and effective removal of accumulated water within the wall, reducing the impact of accumulated water on the structural stability of the retaining wall, and extending the service life of the retaining wall. Simultaneously, it reduces the need for additional drilling during retaining wall construction to install drainage pipes, improving construction convenience and overall project efficiency.

[0069] Furthermore, both the first plug-in portion 121 and the second plug-in portion 141 are T-shaped, and the shapes of the first snap-fit ​​portion 111 and the second snap-fit ​​portion 131 are respectively adapted to the first plug-in portion 121 and the second plug-in portion 141.

[0070] In this embodiment, during the design process of the concrete block 1, the first insertion part 121 and the second insertion part 141 are designed as T-shaped. Simultaneously, the shapes of the first snap-fit ​​part 111 and the second snap-fit ​​part 131 are also precisely designed based on the first insertion part 121 and the second insertion part 141, respectively, to ensure a perfect fit. During production, high-precision molds and processing techniques are used to ensure the dimensional accuracy and surface quality of the T-shaped insertion part and the snap-fit ​​part. During assembly, construction workers assemble the concrete block 1 in the correct direction, ensuring that the T-shaped insertion part is accurately inserted into the snap-fit ​​part, guaranteeing a tight fit without gaps.

[0071] The advantages are that the T-shaped connection structure is more robust, effectively preventing lateral and longitudinal displacement. The T-shaped design allows the interlocking part to form stable support within the snap-fit ​​part, maintaining connection stability even under high soil pressure. This structure improves the overall stability of the retaining wall, enabling it to better withstand soil pressure and the influence of the external environment. Simultaneously, this structure facilitates production and installation. The T-shaped interlocking and snap-fit ​​parts can be manufactured using standardized processes, improving production efficiency. During installation, workers simply insert the interlocking part into the snap-fit ​​part, eliminating the need for complex adjustments and fixation, thus reducing construction difficulty.

[0072] Furthermore, several concrete blocks 1 abut against each other to form a wall surface, a wall base, and a handrail, respectively.

[0073] In this embodiment, during the construction of the retaining wall, the quantity and specifications of the concrete blocks 1 are rationally selected according to the engineering design requirements. Construction workers interlock several concrete blocks 1, precisely arranging and combining them to form the wall surface, wall base, and buttress. When forming the wall surface, the flatness and verticality of the concrete blocks 1 are ensured to guarantee the appearance quality and stability of the retaining wall. The concrete blocks 1 at the wall base need to withstand significant pressure; therefore, special attention must be paid to their strength and stability during selection and installation. The design of the buttress must be rationally planned based on the soil pressure and the height of the retaining wall to ensure it can provide sufficient support. During construction, attention must also be paid to the tightness of the connections between the various parts to ensure the overall structural stability of the retaining wall.

[0074] The advantages lie in its flexibility in design and construction to meet diverse engineering needs, adapting to various terrains and usage conditions. Whether in mountainous areas, plains, or urban construction, this prefabricated retaining wall can be customized in design and construction based on specific terrain and engineering requirements. Simultaneously, the prefabricated construction method improves construction efficiency and reduces the environmental impact of on-site construction. Since the concrete blocks are produced in a factory, quality can be effectively controlled, and pollution such as noise and dust during construction can be reduced. Furthermore, this construction method can shorten the project cycle, reduce project costs, and bring greater economic and social benefits to the project.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention 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 the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A prefabricated retaining wall for roadbed support, characterized in that, It is constructed from concrete blocks (1); The concrete block (1) has a first wall (11) and a second wall (12), with the first wall (11) and the second wall (12) arranged laterally opposite each other; It also has a third wall (13) and a fourth wall (14), the third wall (13) and the fourth wall (14) being arranged longitudinally opposite each other, and respectively connecting the first wall (11) to the second wall (12). The first wall (11) has a first snap-fit ​​portion (111), and the second wall (12) has a first plug-in portion (121). The third wall (13) has a second snap-fit ​​portion (131), and the fourth wall (14) has a second plug-in portion (141). The first insertion part (121) of two horizontally adjacent concrete blocks (1) abuts against the first snap-fit ​​part (111); The second insertion portion (141) of two longitudinally adjacent concrete blocks (1) abuts against the second snap-fit ​​portion (131); The concrete block (1) also has a fifth wall (15) and a sixth wall (16). The fifth wall (15) and the sixth wall (16) are arranged vertically opposite each other, and the first wall (11) is connected to the second wall (12), the third wall (13), and the fourth wall (14), respectively. The fifth wall (15) has a first mounting groove (151), and the sixth wall (16) has a third insertion part (161) and a third snap-fit ​​part (162), and further includes: The snap-fit ​​rod (2) is rotatably disposed in the first mounting groove (151). One end of the snap-fit ​​rod (2) has a fourth insertion part (21). After the fifth wall (15) and the sixth wall (16) of two vertically adjacent concrete blocks (1) are vertically close, the third insertion part (161) abuts against the other end of the snap-fit ​​rod (2), causing the snap-fit ​​rod (2) to rotate, so that the fourth insertion part (21) abuts against the third snap-fit ​​part (162). The fifth wall (15) also has a first groove (152), and the sixth wall (16) also has a first protrusion (163). After the fifth wall (15) and the sixth wall (16) of two adjacent vertical concrete blocks (1) abut together, the first groove (152) abuts against the first protrusion (163); The concrete block (1) has a first cavity (17) in the center, and the first cavity (17) connects the first protrusion (163) and the first groove (152). Also includes: The connecting bar (3) has external threads at both ends. The connecting bar (3) is located inside the first cavity (17). The connecting bar (3) coincides with the center of the concrete block (1). Connecting nut (4), the connecting nut (4) is threaded on one end of the connecting bar (3). After the fifth wall (15) and the sixth wall (16) of two adjacent vertical concrete blocks (1) abut together, the end faces of the two connecting bars (3) abut together. After the connecting nut (4) rotates, it restricts or releases the position of the two connecting bars (3). The connecting nut (4) has a first tooth (41) on the outside, and the concrete block (1) also has a first groove (18) that penetrates the concrete block (1). After the sliding rack (5) and several concrete blocks (1) abut against each other, several first sliding grooves (18) are connected to each other to form a slide (181). The sliding rack (5) is slidably disposed in the slide (181). The sliding rack (5) meshes with the first wheel teeth (41). After the sliding rack (5) slides, it drives the connecting nut (4) to rotate.

2. The prefabricated retaining wall for roadbed support according to claim 1, characterized in that, The surface of the first protrusion (163) is arc-shaped, and the shape of the first groove (152) is adapted to the first protrusion (163).

3. The prefabricated retaining wall for roadbed support according to claim 1, characterized in that, The first protrusion (163) and the first groove (152) coincide with the center of the concrete block (1).

4. A prefabricated retaining wall for roadbed support according to claim 1, characterized in that, Both the first plug-in portion (121) and the second plug-in portion (141) are T-shaped, and the shapes of the first snap-fit ​​portion (111) and the second snap-fit ​​portion (131) are respectively adapted to the first plug-in portion (121) and the second plug-in portion (141).

5. A prefabricated retaining wall for roadbed support according to claim 1, characterized in that, Several concrete blocks (1) abut against each other to form a wall surface, a wall base and a buttress.

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