A concrete retaining wall support structure for an old town drainage pipeline trench

Abstract

This application relates to the technical field of concrete retaining wall support structures, and discloses a concrete retaining wall support structure for drainage pipe trenches in old urban areas. The structure includes retaining wall modules, both ends of which are inclined outwards at a certain angle. An installation groove is provided inside the retaining wall module, and a cross brace module is slidably inserted into the installation groove. First connecting grooves are provided at both ends of the bottom wall of each retaining wall module, and first connecting plates are provided between adjacent retaining wall modules. This concrete retaining wall support structure for drainage pipe trenches in old urban areas, by setting up splicable retaining wall modules and cross brace modules, allows for modular disassembly of the entire concrete retaining wall support structure, facilitating mass production. The first connecting groove, first connecting plate, second connecting groove, and second connecting plate facilitate the splicing and installation of the retaining wall modules, avoiding on-site pouring, simplifying the construction process, and improving the construction efficiency of the concrete retaining wall support structure.

Description

Technical Field

[0001] This application relates to the field of concrete retaining wall support structure technology, specifically a concrete retaining wall support structure for drainage pipe trenches in old urban areas. Background Technology

[0002] Concrete retaining walls are typically installed on the sidewalls of the excavation pit to form a continuous support structure, which serves to prevent the borehole wall from collapsing and to block groundwater.

[0003] An existing patent (publication number: CN219793954U) discloses a concrete retaining wall support structure for drainage pipe trenches in old urban areas. It includes two parallel concrete retaining walls, with multiple horizontal bracing partitions poured at intervals between them. These horizontal bracing partitions are poured and connected to the concrete retaining walls, and after connection, pre-drilled holes are formed at the bottom of each partition for pipes to pass through during installation. The concrete retaining wall comprises multiple layers of concrete poured and stacked sequentially. In adjacent concrete layers, the lower layer has a protrusion on its upper open side, which serves as a positioning reference when pouring the upper concrete layer. This support structure has high rigidity, small deformation, and minimal impact on the surrounding environment. It is suitable for drainage pipe construction in old urban areas with numerous underground pipelines, narrow roads, and proximity to old buildings. Construction noise is low, requiring no special water spraying for dust suppression during construction, thus minimizing impact on nearby residents.

[0004] The concrete retaining wall support structure for the drainage pipe trench in the old city requires on-site concrete pouring. On-site pouring involves multiple processes such as formwork installation, concrete mixing and transportation, which is labor-intensive and has low work efficiency. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a concrete retaining wall support structure for drainage pipe trenches in old urban areas. This structure involves modular casting of the concrete retaining wall support structure, followed by on-site assembly of the retaining wall modules into a unified support structure. This avoids on-site casting, improves the construction efficiency of the concrete retaining wall support structure, and solves the problems mentioned in the background technology.

[0006] To achieve the above objectives, this application provides the following technical solution: a concrete retaining wall support structure for drainage pipe trenches in old urban areas, comprising retaining wall modules, the two ends of which are inclined outward at a certain angle, an installation groove is provided inside the retaining wall module, a cross brace module is slidably inserted into the installation groove, a first connecting groove is provided at both ends of the inner bottom wall of the retaining wall module, a first connecting plate is provided between adjacent retaining wall modules, the two ends of the first connecting plate are slidably inserted into the adjacent first connecting groove, and two second connecting grooves are provided at the ends of the inner sidewalls of the retaining wall modules, a second connecting plate is provided between adjacent retaining wall modules, the two ends of the second connecting plate are slidably inserted into the adjacent second connecting groove.

[0007] The above scheme aims to improve the construction efficiency of concrete retaining wall support structures. By setting up splicable retaining wall modules and cross bracing modules, the overall concrete retaining wall support structure can be modularly disassembled, facilitating mass production. By setting up a first connecting groove, a first connecting plate, a second connecting groove, and a second connecting plate, the retaining wall modules can be easily spliced ​​and installed, avoiding on-site pouring, simplifying the construction process, and improving the construction efficiency of concrete retaining wall support structures.

[0008] Furthermore, each of the inner bottom walls of the protective wall module has a recessed groove at both ends, and the first connecting plate is slidably inserted into the adjacent protective wall module through the adjacent recessed groove. The upper surface of the first connecting plate is flush with the inner bottom wall of the protective wall module.

[0009] The above scheme not only ensures the tightness and stability of the connection between adjacent retaining wall modules, but also makes the bottom wall of the retaining wall module flat, so that there will be no bulges or depressions due to the presence of the first connecting plate. This facilitates the installation of subsequent drainage pipes and other construction operations in the trench, thereby improving construction efficiency and quality.

[0010] Furthermore, each of the inner bottom walls of the protective wall module is fixedly connected to two ends of equidistantly arranged positioning rods, the outer circumferential surface of the positioning rods is slidably inserted into the interior of the first connecting plate, and each positioning rod is threaded with a nut on its outer circumferential surface.

[0011] Through the above scheme, the positioning rod plays a positioning and guiding role, which can ensure that the first connecting plate is accurately and stably inserted into the first connecting groove of the adjacent retaining wall module, thereby improving the installation accuracy. The nut further fixes the first connecting plate to prevent it from loosening or shifting during subsequent use, thereby enhancing the firmness of the connection between adjacent retaining wall modules and ensuring the overall stability of the support structure.

[0012] Furthermore, the top of the first connecting plate has equally spaced grooves, and the positioning rod and nut are both located inside the grooves.

[0013] The above solution ensures that the positioning rod and nut do not protrude from the upper surface of the first connecting plate, thus preventing other construction operations in the trench from being affected by the presence of the positioning rod and nut. It also ensures the flatness of the bottom wall inside the retaining wall module, which is beneficial for the laying of drainage pipes and subsequent maintenance work.

[0014] Furthermore, both ends of the cross brace module are fixedly connected to multiple symmetrically arranged fixing plates, which are fixedly connected to the wall protection module by bolts, and the second connecting plate is fixedly connected to two adjacent wall protection modules by bolts respectively.

[0015] The above solution uses bolts to fix the fixing plate and the wall protection module, which strengthens the connection between the cross brace module and the wall protection module and prevents the cross brace module from easily loosening. By fixing the second connecting plate to the two adjacent wall protection modules with bolts, the second connecting plate can be prevented from easily falling out of the second connecting groove, thus improving the connection stability between adjacent wall protection modules.

[0016] Furthermore, both the retaining wall module and the cross brace module are made of cast concrete, and both the retaining wall module and the cross brace module have reinforcing ribs cast inside.

[0017] Through the above scheme, the concrete material has high strength and durability, and can withstand greater soil and water pressure, ensuring that the support structure can work stably for a long time under complex geological conditions. The addition of reinforcing bars further improves the tensile, compressive and bending resistance of the retaining wall module and cross brace module, enhances the overall load-bearing capacity of the support structure, effectively prevents cracking and deformation of the support structure during construction or use, and extends the service life of the support structure.

[0018] Furthermore, each of the wall protection modules is fixedly connected to a lock at its top, and a water-blocking sill is fixedly connected to the end of the upper surface of each lock away from the wall protection module. The wall protection module, lock, and water-blocking sill are integrally cast.

[0019] The above-mentioned scheme effectively prevents surface water from flowing into the trench, improves the stability and safety of the support structure, and the integral casting method ensures the connection strength and integrity between the lock, the water barrier and the retaining wall module.

[0020] Furthermore, a pre-drilled hole is provided between the bottom surface of the cross brace module and the inner bottom wall of the protective wall module.

[0021] The above scheme allows for the installation and maintenance of drainage pipes and the laying of other pipelines in the trench during subsequent construction, providing working space for construction personnel.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] The concrete retaining wall support structure for the drainage pipe trench in the old city area can be modularly disassembled by setting up splicable retaining wall modules and cross bracing modules, which facilitates mass production. By setting up a first connecting groove, a first connecting plate, a second connecting groove, and a second connecting plate, it is convenient to splice and install the retaining wall modules, avoid on-site pouring, simplify the construction process, and improve the construction efficiency of the concrete retaining wall support structure. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the entire application;

[0025] Figure 2 This is a front view diagram of the overall structure of this application;

[0026] Figure 3 This is a structural diagram of the retaining wall module of this application;

[0027] Figure 4 This is a vertical assembly structure diagram of this application;

[0028] Figure 5 This is a partial sectional view of the structure of this application;

[0029] Figure 6 This is a partial cross-sectional side view of the structure of this application;

[0030] Figure 7 For this application Figure 3 Enlarged structural diagram at point A;

[0031] Figure 8 For this application Figure 6 Enlarged structural diagram at point B.

[0032] In the picture:

[0033] 1. Wall protection module; 2. Mounting groove; 3. Cross brace module; 4. First connecting groove; 5. First connecting plate; 6. Second connecting groove; 7. Second connecting plate; 8. Settlement groove; 9. Positioning rod; 10. Nut; 11. Groove; 12. Fixing plate; 13. Locking hole; 14. Water barrier; 15. Reserved hole. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Please see Figure 1 , Figure 2 and Figure 3 The concrete retaining wall support structure for drainage pipe trenches in old urban areas in this embodiment includes a retaining wall module 1. Both ends of the retaining wall module 1 are tilted outward at a certain angle. An installation groove 2 is provided inside the retaining wall module 1, and a cross bracing module 3 is slidably inserted into the installation groove 2.

[0036] Please see Figure 4 , Figure 6 and Figure 8 Both ends of the bottom wall of the protective wall module 1 are provided with first connecting grooves 4, and a first connecting plate 5 is provided between adjacent protective wall modules 1. The two ends of the first connecting plate 5 are respectively slidably inserted into the adjacent first connecting grooves 4.

[0037] Please see Figure 3 , Figure 4 and Figure 7 Two second connecting slots 6 are provided at the ends of the inner sidewall of the protective wall module 1, and a second connecting plate 7 is provided between adjacent protective wall modules 1. The two ends of the second connecting plate 7 are slidably inserted into the adjacent second connecting slots 6 respectively.

[0038] Please see Figure 4 , Figure 6 and Figure 8 Each retaining wall module 1 has a recessed groove 8 at both ends of its inner bottom wall. The first connecting plate 5 is slidably inserted into the adjacent retaining wall module 1 through the adjacent recessed groove 8. The upper surface of the first connecting plate 5 is flush with the inner bottom wall of the retaining wall module 1. This design not only ensures the tightness and stability of the connection between adjacent retaining wall modules 1, but also makes the inner bottom wall of the retaining wall module 1 flat, and will not produce bulges or depressions due to the presence of the first connecting plate 5. This facilitates the subsequent installation of drainage pipes and other construction operations in the trench, and improves construction efficiency and construction quality.

[0039] Please see Figure 3 , Figure 4 and Figure 8 Each retaining wall module 1 has two ends of its inner bottom wall fixedly connected with equidistantly arranged positioning rods 9. The outer circumferential surface of the positioning rods 9 is slidably inserted into the interior of the first connecting plate 5. Each positioning rod 9 has a nut 10 threadedly connected to its outer circumferential surface. The positioning rods 9 serve to position and guide, ensuring that the first connecting plate 5 is accurately and stably inserted into the first connecting groove 4 of the adjacent retaining wall module 1, thus improving installation accuracy. The nuts 10 further fix the first connecting plate 5, preventing it from loosening or shifting during subsequent use, thereby enhancing the firmness of the connection between adjacent retaining wall modules 1 and ensuring the overall stability of the support structure.

[0040] Please see Figure 3 and Figure 4The top of the first connecting plate 5 is provided with equally spaced grooves 11. The positioning rod 9 and the nut 10 are both located inside the grooves 11. The design of the grooves 11 ensures that the positioning rod 9 and the nut 10 do not protrude from the upper surface of the first connecting plate 5, thus avoiding the impact of the positioning rod 9 and the nut 10 on other construction operations in the trench. It also ensures the flatness of the bottom wall of the wall protection module 1, which is conducive to the laying of drainage pipes and the subsequent maintenance work.

[0041] Please see Figure 1 , Figure 2 and Figure 3 Both ends of the cross brace module 3 are fixedly connected with multiple symmetrically arranged fixing plates 12. The fixing plates 12 are fixedly connected to the wall protection module 1 by bolts. The second connecting plate 7 is fixedly connected to two adjacent wall protection modules 1 by bolts. By fixing the fixing plates 12 and the wall protection modules 1 with bolts, the connection between the cross brace module 3 and the wall protection module 1 can be strengthened, preventing the cross brace module 3 from easily loosening. By fixing the second connecting plate 7 to the two adjacent wall protection modules 1 with bolts, the second connecting plate 7 can be prevented from easily falling out of the second connecting groove 6, thus improving the connection stability between adjacent wall protection modules 1.

[0042] Please see Figure 1 and Figure 5 Both the retaining wall module 1 and the cross brace module 3 are made of cast concrete. Both retaining wall module 1 and cross brace module 3 have internal reinforcing bars. Concrete has high strength and durability, and can withstand large soil pressure and water pressure, ensuring that the support structure can work stably for a long time under complex geological conditions. The addition of reinforcing bars further improves the tensile, compressive and bending resistance of retaining wall module 1 and cross brace module 3, enhances the overall load-bearing capacity of the support structure, effectively prevents cracking and deformation of the support structure during construction or use, and extends the service life of the support structure.

[0043] Please see Figure 1 , Figure 2 and Figure 3 Each retaining wall module 1 is fixedly connected to a lock 13 at its top. A water-blocking sill 14 is fixedly connected to the end of the upper surface of each lock 13 away from the retaining wall module 1. The retaining wall module 1, lock 13 and water-blocking sill 14 are integrally cast. The setting of lock 13 and water-blocking sill 14 can effectively prevent surface water from flowing into the trench, improve the stability and safety of the support structure, and the integral casting method ensures the connection strength and integrity between lock 13, water-blocking sill 14 and retaining wall module 1.

[0044] Please see Figure 1 and Figure 2A reserved hole 15 is provided between the bottom surface of the cross bracing module 3 and the inner bottom wall of the retaining wall module 1. The reserved hole 15 facilitates the installation and maintenance of drainage pipes and the laying of other pipelines in the trench during subsequent construction, and provides operating space for construction personnel.

[0045] This embodiment of a concrete retaining wall support structure for drainage pipe trenches in old urban areas allows for modular disassembly of the entire concrete retaining wall support structure by setting up a splicable retaining wall module 1 and a cross brace module 3, facilitating mass production. By setting up a first connecting groove 4, a first connecting plate 5, a second connecting groove 6, and a second connecting plate 7, it is convenient to splice and install the retaining wall module 1, avoiding on-site pouring, simplifying the construction process, and improving the construction efficiency of the concrete retaining wall support structure.

[0046] It should be noted that the two ends of the retaining wall module 1 are tilted outward at a certain angle, so that the soil around the trench tilts outward and prevents the soil from collapsing inward.

[0047] It should be noted that both the first connecting plate 5 and the second connecting plate 7 have an n-shaped structure, so that the two ends of the first connecting plate 5 and the second connecting plate 7 can be inserted into the first connecting groove 4 and the second connecting groove 6 respectively.

[0048] The working principle of the above embodiments is as follows:

[0049] The retaining wall module 1 and the cross brace module 3 can be mass-produced by casting in the factory. The manufactured components are then transported to the trench location for assembly and installation. During installation, the retaining wall module 1 is first laid into the trench, then the cross brace module 3 is inserted into the installation slot 2, and bolts are used to fix the fixing plate 12 on the cross brace module 3 to the retaining wall module 1. Next, the first connecting plate 5 is installed into the recess 8 between adjacent retaining wall modules 1, so that both ends of the first connecting plate 5 are inserted into the first connecting slot 4 of the adjacent retaining wall module 1. During installation of the first connecting plate 5, the positioning rod 9 will... 5. Pass through the inside and tighten the nut 10 onto the positioning rod 9 to fix the first connecting plate 5, thereby connecting and fixing the adjacent retaining wall module 1. Insert the second connecting plate 7 into the second connecting groove 6 of the adjacent retaining wall module 1, and use bolts to fix the second connecting plate 7 to the adjacent retaining wall module 1, further connecting and fixing the adjacent retaining wall module 1. Through modular design, the retaining wall module 1, cross brace module 3 and connecting parts are used to achieve rapid splicing and installation, avoiding on-site pouring, thereby simplifying the construction process and improving construction efficiency. At the same time, the coordinated work of each component ensures the stability and functionality of the support structure.

[0050] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete retaining wall support structure for drainage pipe trenches in old urban areas, comprising retaining wall modules (1), characterized in that: The two ends of the protective wall module (1) are tilted outward at a certain angle. The interior of the protective wall module (1) is provided with an installation groove (2). A cross brace module (3) is slidably inserted into the interior of the installation groove (2). The two ends of the inner bottom wall of the protective wall module (1) are provided with a first connecting groove (4). A first connecting plate (5) is provided between adjacent protective wall modules (1). The two ends of the first connecting plate (5) are slidably inserted into the adjacent first connecting groove (4). The ends of the inner side wall of the protective wall module (1) are provided with two second connecting grooves (6). A second connecting plate (7) is provided between adjacent protective wall modules (1). The two ends of the second connecting plate (7) are slidably inserted into the adjacent second connecting groove (6).

2. The concrete retaining wall support structure for drainage pipe trenches in old urban areas according to claim 1, characterized in that: Each of the inner bottom walls of the wall protection module (1) has a sink groove (8) at both ends. The first connecting plate (5) is slidably inserted into the adjacent wall protection module (1) through the adjacent sink groove (8). The upper surface of the first connecting plate (5) is flush with the inner bottom wall of the wall protection module (1).

3. The concrete retaining wall support structure for drainage pipe trenches in old urban areas according to claim 1, characterized in that: Each of the inner bottom walls of the wall protection module (1) is fixedly connected to two ends of a positioning rod (9) arranged at equal intervals. The outer circumferential surface of the positioning rod (9) is slidably inserted into the interior of the first connecting plate (5). Each of the positioning rods (9) is threaded with a nut (10) on its outer circumferential surface.

4. The concrete retaining wall support structure for drainage pipe trenches in old urban areas according to claim 3, characterized in that: The top of the first connecting plate (5) is provided with grooves (11) arranged at equal intervals, and the positioning rod (9) and the nut (10) are both located inside the grooves (11).

5. The concrete retaining wall support structure for drainage pipe trenches in old urban areas according to claim 1, characterized in that: Both ends of the cross brace module (3) are fixedly connected to a plurality of symmetrically arranged fixing plates (12). The fixing plates (12) are fixedly connected to the wall protection module (1) by bolts. The second connecting plate (7) is fixedly connected to two adjacent wall protection modules (1) by bolts respectively.

6. The concrete retaining wall support structure for drainage pipe trenches in old urban areas according to claim 1, characterized in that: Both the retaining wall module (1) and the cross bracing module (3) are made of cast concrete, and both the retaining wall module (1) and the cross bracing module (3) have reinforcing ribs cast inside.

7. The concrete retaining wall support structure for drainage pipe trenches in old urban areas according to claim 1, characterized in that: Each of the wall protection modules (1) is fixedly connected to a lock (13) at its top end, and a water barrier (14) is fixedly connected to the end of the upper surface of each lock (13) away from the wall protection module (1). The wall protection module (1), lock (13) and water barrier (14) are integrally cast.

8. The concrete retaining wall support structure for drainage pipe trenches in old urban areas according to claim 1, characterized in that: A pre-drilled hole (15) is provided between the bottom surface of the cross brace module (3) and the inner bottom wall of the wall protection module (1).

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