A stepped bulkhead block
By introducing stepped protrusions and grooves for interlocking, vertical main protrusions for connecting with slots, auxiliary tenons for locking with mortises and grooves, and elastic locking components into the stepped compartment retaining wall blocks, the problems of easy misalignment and slippage of retaining walls in existing technologies have been solved, thereby improving the stability of the structure and construction efficiency.
Patent Information
- Application Number
- CN202521658316.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-14
- Estimated Expiration
- 2035-08-06
AI Technical Summary
Existing stepped compartment retaining wall blocks are prone to vertical misalignment and horizontal slippage under load, resulting in poor overall stability, requiring frequent maintenance, and posing safety hazards.
The design incorporates a stepped boss and groove engagement, a vertical main boss and slot connection, an auxiliary tenon and mortise locking mechanism, and a combination of elastic locking components and positioning pins to enhance the stability of vertical and horizontal connections.
It improves the vertical overturning resistance and horizontal sliding resistance of the retaining wall, enhances the overall structural stability and construction convenience, and reduces maintenance frequency and safety hazards.
Smart Images

Figure CN224495035U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering building components technology, and in particular to a stepped compartment retaining wall block. Background Technology
[0002] Stepped-compartment retaining wall blocks are used in civil engineering for slope protection, riverbank protection, road slope protection, and embankment reinforcement in water conservancy projects. Their core function is to form a retaining wall structure through the orderly assembly of blocks, resisting loads such as lateral earth pressure and water flow impact, preventing slope collapse and riverbank erosion. Simultaneously, the compartmentalized design enables ecological greening, balancing structural stability with ecological restoration functions.
[0003] However, existing stepped compartment retaining wall blocks only connect with protrusions through a single slot, lacking vertical step interlocking and auxiliary locking structures, making them prone to vertical misalignment under load. Furthermore, the lack of a vertical elastic locking design, relying solely on the fit between the protrusions and slots, results in weak resistance to horizontal slippage. After construction, the retaining wall is susceptible to loosening due to vibration, water pressure, etc., leading to poor overall stability and requiring frequent maintenance. This not only increases costs but may also cause safety hazards due to instability. Therefore, a stepped compartment retaining wall block is needed. Utility Model Content
[0004] The purpose of this invention is to provide a stepped compartment retaining wall block that solves the problems of easy horizontal movement and instability in the prior art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a stepped compartment retaining wall block, comprising a block body, the block body being a cuboid structure, its interior divided into at least two independent compartments along its length by partitions; the upper surface of the block body having stepped protrusions, and the lower surface having stepped grooves matching the stepped protrusions; the stepped protrusions and stepped grooves forming a vertical stepped interlocking structure; the left side of the block body having a vertical main protrusion, and the right side having a vertical main protrusion matching the stepped protrusions; The vertical main protrusion is matched with a vertical main slot, and the vertical main protrusion and the vertical main slot form a vertical basic connection structure. The front of the block body is provided with an auxiliary tenon, and the rear of the body is provided with an auxiliary tenon that matches the auxiliary tenon. The auxiliary tenon and the auxiliary tenon form a vertical auxiliary locking structure. The two sides of the vertical main protrusion are provided with elastic locking elements, and the left and right inner walls of the vertical main slot are provided with locking grooves that match the elastic locking elements. The elastic locking elements and the locking grooves form a vertical elastic locking structure.
[0006] Preferably, the elastic locking member is embedded inside the vertical main protrusion, and the other end of the elastic locking member extends out of the surface of the vertical main protrusion, with the extended end having an arc-shaped protrusion structure. The locking groove is an arc-shaped groove adapted to the arc-shaped protrusion structure.
[0007] Preferably, the auxiliary tenons are spaced apart along the stepped surfaces of the stepped bosses, and the cross-section of the auxiliary tenons is an isosceles trapezoidal structure, and the cross-section of the auxiliary tenon groove is adapted to the auxiliary tenons.
[0008] Preferably, the block body has positioning pins at its four corners, and the positioning pins penetrate the upper and lower surfaces of the block body.
[0009] Preferably, the compartment includes a load-bearing compartment on the soil-facing side and an ecological compartment on the water-repellent side. The inner wall of the load-bearing compartment is provided with reinforcing ribs, and the bottom of the ecological compartment is provided with drainage holes.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] The stepped protrusions on the blocks engage with the stepped grooves on the lower blocks, and the auxiliary tenons are inserted into the auxiliary tenons to lock and prevent misalignment. The left vertical main protrusion is inserted into the right vertical main slot, and the elastic locking element springs into the locking slot to form an elastic lock, preventing horizontal slippage. The positioning pin is inserted into the positioning pin hole to ensure accurate installation. The load-bearing compartment is filled with crushed stone concrete and reinforced with ribs to resist lateral pressure. The ecological compartment is filled with planting soil, and the drainage hole drains accumulated water. All structures work together to improve the stability and ecological nature of the retaining wall. Attached Figure Description
[0012] Figure 1 This is a top view of the overall structure of the product of this utility model;
[0013] Figure 2 This is a schematic diagram of the overall front view of the product of this utility model;
[0014] Figure 3 This is a schematic diagram of the overall rear view structure of the product of this utility model;
[0015] Figure 4 This is a schematic diagram of the overall left side structure of the product of this utility model;
[0016] Figure 5 This is an enlarged structural diagram of section B of the product of this utility model;
[0017] Figure 6 This is an enlarged structural diagram of section A of the product of this utility model.
[0018] In the diagram: 1. Block body; 2. Partition; 3. Compartment; 31. Load-bearing compartment; 32. Ecological compartment; 4. Stepped boss; 5. Stepped groove; 6. Vertical main protrusion; 7. Vertical main slot; 8. Auxiliary tenon; 9. Auxiliary mortise; 10. Elastic locking element; 11. Locking groove; 12. Positioning pin; 13. Reinforcing rib; 14. Drainage hole. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] This utility model relates to a stepped compartment retaining wall block, such as Figure 1-6 As shown, it includes the block body 1, which is the foundation of the overall structure. It is rectangular in shape and is made of C30 concrete precast. It is the installation carrier of all components, provides the overall structural strength, bears external loads such as lateral earth pressure and water flow impact of the retaining wall, and provides the installation foundation for other functional components.
[0021] Furthermore, the interior of the block body 1 is provided with a partition 2 along the length direction, and the compartment 3 is formed by the partition 2;
[0022] Among them, such as Figure 1 As shown, the compartment 3 includes a load-bearing compartment 31 and an ecological compartment 32. The load-bearing compartment 31 and the ecological compartment 32 are located on both sides of the partition 2. The inner wall of the load-bearing compartment 31 is provided with reinforcing ribs 13. Combined with the supporting role of the reinforcing ribs 13, the retaining wall's resistance to lateral earth pressure can be enhanced, providing the main structural support for the retaining wall. The bottom of the ecological compartment 32 is provided with drainage holes 14. The drainage holes 14 can drain the water accumulated in the ecological compartment 32 in a timely manner, avoiding root rot of vegetation due to water accumulation and ensuring normal vegetation growth.
[0023] Furthermore, the upper surface of the block body 1 is provided with a stepped protrusion 4, and the lower surface of the block body 1 is provided with a stepped groove 5 that matches the shape and size of the stepped protrusion 4. When adjacent blocks are installed, the stepped groove 5 of the upper block and the stepped protrusion 4 of the lower block are precisely engaged, and the connection is achieved through the tight fit of the stepped surfaces. No additional fasteners are required, forming a vertical stepped engagement structure, which increases the contact area between the upper and lower blocks, restricts the relative displacement of the upper and lower blocks in the vertical direction, improves the overall overturning resistance of the retaining wall, and provides a stable path for the transmission of vertical loads.
[0024] Furthermore, a vertical main protrusion 6 is provided on the left side of the block body 1, which extends through the entire left side along the height direction. Its cross-section is an isosceles triangle. The vertical main slot 7 is located on the right side of the block body 1 and is adapted to the position and size of the vertical main protrusion 6. When adjacent blocks are installed, the vertical main protrusion 6 of the left block is horizontally inserted into the vertical main slot 7 of the right block. The protrusion and the inner wall of the slot are tightly fitted to form a vertical basic connection, realizing the initial positioning and connection between the left and right blocks, restricting the horizontal sliding of the left and right blocks in the vertical direction, providing a foundation for the subsequent installation of the vertical elastic locking structure, and enhancing the vertical integrity of the retaining wall.
[0025] Furthermore, an auxiliary tenon 8 is fixedly provided on the front side of the block body 1. Each auxiliary tenon 8 has an isosceles trapezoidal cross section. An auxiliary tenon 9 is provided on the back side of the block body 1, corresponding one-to-one with the position and shape of the auxiliary tenon 8. As an auxiliary locking component of the vertical stepped interlocking structure, the wedge-tightening effect of the isosceles trapezoidal structure enhances the vertical pull-out resistance between the upper and lower blocks, effectively preventing vertical misalignment of the upper and lower blocks due to vibration and other factors. At the same time, the guiding effect of the trapezoidal structure can improve the installation efficiency during construction.
[0026] Furthermore, elastic locking elements 10 are provided on both sides of the vertical main protrusion 6, and locking grooves 11 matching the elastic locking elements 10 are provided on the left and right inner walls of the vertical main slot 7. The elastic locking elements 10 and locking grooves 11 form a vertical elastic locking structure. The protruding part of the elastic locking elements 10 is an arc-shaped protrusion structure. The arc-shaped structure design ensures the smoothness of the locking and unlocking process, taking into account both connection strength and construction convenience.
[0027] Furthermore, there are four positioning pins 12, which are respectively set at the four corners of the block body 1. The bottom surface of the block body 1 has grooves that match the positioning pins 12 (not shown in the figure), so as to realize the three-dimensional positioning of the block and avoid connection failure caused by alignment deviation during construction. The steel bar positioning pins 12 connect the scattered blocks into a whole, further improving the resistance to displacement of the retaining wall and enhancing the overall stability of the retaining wall.
[0028] In practical use: the stepped protrusions 4 on the block engage with the stepped grooves 5 of the lower block, the auxiliary tenon 8 is inserted into the auxiliary tenon 9 to lock and prevent misalignment, the left vertical main protrusion 6 is inserted into the right vertical main slot 7, the elastic locking piece 10 springs into the locking groove 11 to form an elastic lock and prevent horizontal slippage, the positioning pin 12 is inserted into the positioning pin hole to ensure accurate installation, the load-bearing compartment 31 is filled with crushed stone concrete and reinforced with reinforcing ribs 13 to resist lateral pressure, the ecological compartment 32 is filled with planting soil, and the drainage hole 14 drains accumulated water. All structures work together to improve the stability and ecology of the retaining wall.
[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A stepped compartmentalized retaining wall block, comprising a block body (1), wherein the block body (1) is a cuboid structure, and its interior is divided into at least two independent compartments (3) along its length by partitions (2), characterized in that: The upper surface of the block body (1) is provided with a stepped protrusion (4), and the lower surface is provided with a stepped groove (5) that matches the stepped protrusion (4). The stepped protrusion (4) and the stepped groove (5) form a vertical stepped interlocking structure. The left side of the block body (1) is provided with a vertical main protrusion (6), and the right side is provided with a vertical main slot (7) that matches the vertical main protrusion (6). The vertical main protrusion (6) and the vertical main slot (7) form a vertical basic connection structure. 1) The front side is provided with an auxiliary tenon (8), and the rear side of the body (1) is provided with an auxiliary tenon (9) that matches the auxiliary tenon (8). The auxiliary tenon (8) and the auxiliary tenon (9) form a vertical auxiliary locking structure. The two sides of the vertical main protrusion (6) are provided with elastic locking members (10). The left and right inner walls of the vertical main slot (7) are provided with locking grooves (11) that match the elastic locking members (10). The elastic locking members (10) and the locking grooves (11) form a vertical elastic locking structure.
2. The stepped compartment retaining wall block according to claim 1, characterized in that: The elastic locking member (10) is embedded inside the vertical main protrusion (6), and the other end of the elastic locking member (10) extends out of the surface of the vertical main protrusion (6), and the extended end has an arc-shaped protrusion structure. The locking groove (11) is an arc-shaped groove that is adapted to the arc-shaped protrusion structure.
3. The stepped compartment retaining wall block according to claim 1, characterized in that: The auxiliary tenons (8) are spaced apart along the stepped surfaces of the stepped bosses (4), and the cross section of the auxiliary tenons (8) is an isosceles trapezoidal structure. The cross section of the auxiliary tenon (9) is adapted to the auxiliary tenons (8).
4. The stepped compartment retaining wall block according to claim 1, characterized in that: The block body (1) is provided with positioning pins (12) at its four corners, and the positioning pins (12) penetrate the upper and lower surfaces of the block body (1).
5. The stepped compartment retaining wall block according to claim 1, characterized in that: The compartment (3) includes a load-bearing compartment (31) on the soil-facing side and an ecological compartment (32) on the water-repellent side. The inner wall of the load-bearing compartment (31) is provided with reinforcing ribs (13), and the bottom of the ecological compartment (32) is provided with drainage holes (14).