Fabricated gravity retaining wall with reinforced structural integrity

Abstract

The utility model relates to an assembly type gravity retaining wall with reinforced structural integrity, which comprises a plurality of prefabricated structural unit bodies, and the structural unit bodies are provided with vertically through reserved hole channels; after the multiple structural unit bodies are vertically combined, the multiple reserved hole channels are vertically communicated, prestressed tendons are inserted, anchor sealing is conducted, and therefore the structural unit bodies are connected and combined into a whole; tenons protruding downwards are arranged on the bottom faces of the structural unit bodies, and the shapes of the tenons are matched with the shapes of the reserved hole channels; when the vertical adjacent structural unit bodies are combined, the tenons of the upper structural unit bodies are inserted into the reserved hole channels of the lower structural unit bodies. According to the utility model, the assembly members of the structure are connected with each other through the mortise and tenon joints and the prestressed tendons, and the independent stress of each assembly member is converted into the overall stress of the assembly type structure through a formed complete retaining system, so that the overall stability of the structure is improved, and the engineering safety is ensured.

Description

Technical Field

[0001] This utility model relates to the field of retaining structure technology, specifically to a prefabricated gravity retaining wall that enhances the overall structure. Background Technology

[0002] Cast-in-place gravity retaining walls have many drawbacks, such as low construction efficiency, poor seismic performance, difficulty in curing large volumes of concrete, and inability to construct in cold winters. However, the new prefabricated gravity retaining wall structure and its construction method can effectively improve these defects and significantly improve construction efficiency and quality.

[0003] Currently, prefabricated structure connection technologies can be mainly divided into two categories: dry connection technology and wet connection technology. Prefabricated gravity retaining wall structures constructed using these two technologies have independent assembly components, thus lacking overall coordination and exhibiting poor seismic performance. However, in some complex and harsh environments, the overall stability of prefabricated retaining structures becomes, to a certain extent, a decisive factor in engineering management, restricting project safety.

[0004] Therefore, it is necessary to propose new measures to overcome the above-mentioned shortcomings. Summary of the Invention

[0005] The purpose of this invention is to provide a prefabricated gravity retaining wall that enhances the overall structural integrity, thereby solving the problems of existing prefabricated gravity retaining walls where the assembled components are independent of each other, lack overall coordination, and have poor seismic performance.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A prefabricated gravity retaining wall with enhanced structural integrity, the prefabricated gravity retaining wall comprising multiple prefabricated structural units, each structural unit having a vertically penetrating reserved channel;

[0008] After multiple structural units are vertically combined, multiple reserved channels are vertically connected, prestressed tendons are inserted and anchored, thereby connecting and combining the structural units into a whole.

[0009] Furthermore, the bottom surface of the structural unit has a downwardly protruding tenon, the shape of which matches the shape of the reserved channel;

[0010] When vertically adjacent structural units are combined, the tenon of the upper structural unit is inserted into the reserved hole of the lower structural unit.

[0011] Meanwhile, the prefabricated gravity retaining wall also includes a top plate located on top of it, which has multiple vertical reserved channels arranged horizontally evenly.

[0012] The top of the prestressed tendon passes through the reserved hole in the top slab and is anchored by the anchoring structure.

[0013] Furthermore, the bottom surface of the top plate has a downwardly protruding tenon, the shape of which matches the shape of the reserved channel;

[0014] When the top plate is combined with the structural unit located at the top layer, the tenon is inserted into the reserved channel of the structural unit at the top layer.

[0015] In addition, the prefabricated gravity retaining wall also includes a base plate at its bottom, on which multiple vertical reserved channels are provided and evenly arranged horizontally.

[0016] The bottom end of the prestressed tendon passes through the reserved hole in the base plate and is anchored by the anchoring structure.

[0017] Furthermore, an upwardly protruding baffle is provided on one longitudinal side of the base plate.

[0018] Furthermore, the structural unit is provided with longitudinal drainage holes.

[0019] Furthermore, one longitudinal side of the structural unit is an inclined plane, and the top surface area of ​​the structural unit is smaller than the bottom surface area.

[0020] Furthermore, one longitudinal side of the prefabricated gravity retaining wall is an inclined surface, and the top surface area of ​​the prefabricated gravity retaining wall is smaller than the bottom surface area.

[0021] Furthermore, the prestressed tendon is a prestressed steel strand or a prestressed anchor rod.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] This utility model provides a prefabricated gravity retaining wall that enhances the overall structural integrity. It consists of a prefabricated top slab, structural units, and a bottom slab. The structural units are positioned and hoisted by prestressed anchor cables (rods) anchored to the bottom slab. The upper and lower unit structures use tenons and prestressed anchor cables (rods) to achieve rapid positioning and hoisting. Then, the prestressed anchor cables (rods) are tensioned and anchored to connect the various assembled components of the structure. Through the formed complete support system, the individual force of each assembled component is transformed into the overall force of the prefabricated structure, improving the overall stability of the structure and ensuring the safety of the project. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional view of the assembled gravity retaining wall provided in the embodiment of this utility model.

[0026] Figure 2 This is an exploded view of the prefabricated gravity retaining wall structure provided in this embodiment of the utility model.

[0027] Figure 3 This is a front structural diagram of the prefabricated gravity retaining wall provided in this embodiment of the utility model.

[0028] Figure 4 This is a side structural diagram of the assembled gravity retaining wall provided in an embodiment of this utility model.

[0029] Figure 5 This is a schematic diagram of step S1 of the prefabricated gravity retaining wall construction method provided in this embodiment of the utility model.

[0030] Figure 6 This is a schematic diagram of step S2 of the prefabricated gravity retaining wall construction method provided in this embodiment of the utility model.

[0031] Figure 7 This is a schematic diagram of step S3 of the prefabricated gravity retaining wall construction method provided in this embodiment of the utility model.

[0032] Figure 8 This is a schematic diagram of step S4 of the prefabricated gravity retaining wall construction method provided in this embodiment of the utility model.

[0033] Figure 9 This is a schematic diagram of step S5 of the prefabricated gravity retaining wall construction method provided in this embodiment of the utility model.

[0034] Figure 10 This is a schematic diagram of step S6 of the prefabricated gravity retaining wall construction method provided in this embodiment of the utility model.

[0035] The diagram is labeled as follows:

[0036] 1-Base plate, 2-Top plate, 3-Structural unit, 4-Anchoring structure, 5-Reserved duct, 6-Prestressed tendon, 7-Drainage hole, 8-Tongue, 9-Baffle. Detailed Implementation

[0037] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0038] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "longitudinal", and "horizontal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] It should also be noted that although the order of steps is mentioned in the method description, in some cases, steps may be performed in a different order than that described here, and this should not be interpreted as a restriction on the order of steps.

[0041] In a specific implementation, Figure 1 The direction from left to right in the middle is defined as horizontal. Figure 1 The direction from top to bottom is defined as vertical. Figure 1 The direction from front to back in the middle is defined as longitudinal. See other attached diagrams for reference. Figure 1 Definition.

[0042] This invention provides a novel prefabricated gravity retaining wall, in which prefabricated components are then assembled on-site using a prefabricated connection process. To enhance the overall structural integrity and ensure effective connection of all assembled components, a combination of mortise and tenon joints and prestressed tendons is employed.

[0043] Specifically, such as Figure 1-4 The prefabricated gravity retaining wall is assembled from numerous prefabricated structural units 3. First, multiple structural units 3 are arranged horizontally in close rows to form a single layer of retaining wall structure. Then, multiple layers of retaining wall structures are stacked vertically to form the entire wall.

[0044] The structural unit 3 has a special structure to achieve the combination of mortise and tenon joints and prestressed tendons. The structural unit 3 is a prefabricated block with vertically continuous pre-reserved channels 5. After multiple structural units 3 are vertically combined, the multiple pre-reserved channels 5 are vertically connected, prestressed tendons 6 are inserted, and both ends are sealed with anchors, thus vertically connecting and combining the structural unit 3. In addition, the bottom surface of the structural unit 3 has a downward-protruding tenon 8. The shape of the tenon 8 matches the shape of the pre-reserved channel 5. When vertically adjacent structural units 3 are combined, the tenon 8 of the upper structural unit 3 is inserted into the pre-reserved channel 5 of the lower structural unit 3, which not only allows for accurate positioning but also provides a limiting effect. The connection method combining mortise and tenon joints and prestressed tendons significantly strengthens the vertical integrity of the prefabricated gravity retaining wall.

[0045] In some embodiments, the reserved channel 5 is a channel with a small diameter that can pass through the prestressing tendon 6. The top surface of the structural unit 3 and the top of the reserved channel 5 are provided with a recessed groove that matches the shape of the tenon 8. When vertically adjacent structural units 3 are combined, the tenon 8 of the upper structural unit 3 is inserted into the recessed groove of the lower structural unit 3.

[0046] Meanwhile, to enhance the lateral integrity of the prefabricated gravity retaining wall, it also includes a top plate 2 at its top. The top plate 2 has multiple vertical pre-reserved channels 5 evenly arranged laterally. The top ends of the prestressing tendons 6 pass through the pre-reserved channels 5 of the top plate 2 and are anchored by the sealing anchor structure 4. The bottom surface of the top plate 2 also has downward-protruding tenons 8, the shape of which matches the shape of the pre-reserved channels 5. When the top plate 2 is combined with the top-level structural unit 3, the tenons 8 are inserted into the pre-reserved channels 5 of the top-level structural unit 3. Correspondingly, the prefabricated gravity retaining wall also includes a bottom plate 1 at its bottom. The bottom plate 1 has multiple vertical pre-reserved channels 5 evenly arranged laterally. The bottom ends of the prestressing tendons 6 pass through the pre-reserved channels 5 of the bottom plate 1 and are anchored by the sealing anchor structure 4. The top plate 2 and the bottom plate 1 form a lateral connection between the top and bottom of the wall, thus significantly enhancing the lateral integrity of the structure.

[0047] In addition, a baffle 9 protruding upward is provided on one longitudinal side of the base plate 1 to provide longitudinal limiting protection.

[0048] In this invention, the prestressing tendon 6 can be made of prestressed steel strand or prestressed anchor rod, depending on actual needs. The bottom plate 1, top plate 2, and structural unit 3 are all precast reinforced concrete structures, while the anchor sealing structure 4 is a cast-in-place reinforced concrete structure.

[0049] One longitudinal side of structural unit 3 is a slope, and the top surface area of ​​structural unit 3 is smaller than the bottom surface area. Furthermore, the prefabricated gravity retaining wall formed after assembling structural unit 3 also has one longitudinal side that is a slope, and the top surface area of ​​the prefabricated gravity retaining wall is smaller than the bottom surface area. The entire prefabricated gravity retaining wall is wider at the bottom and narrower at the top, exhibiting extremely high stability.

[0050] In addition, the structural unit 3 is provided with longitudinal drainage holes 7 for longitudinal drainage and pressure relief.

[0051] like Figure 5-10 The construction method of this utility model specifically includes the following steps:

[0052] S1: Hoist the structural unit 3 that is in contact with the upper part of the base plate 1. Hoist the structural unit 3 until its reserved hole 5 is aligned with the reserved hole 5 of the lower base plate 1. Pass the aforementioned prestressed tendon 6 through the reserved hole 5 corresponding to the structural unit 3. Then slowly hoist the structural unit 3 to the corresponding position.

[0053] S2: Install the upper structural unit 3 sequentially. After the bottom structural unit 3 is installed in the corresponding position, install the upper structural unit 3 above it. Before installation, the reserved hole 5 needs to be aligned with the previously installed prestressing tendon 6. After the prestressing tendon 6 has completely passed through the structural unit 3, it can be slowly lowered. When the upper structural unit 3 is lowered to a height close to the top of the lower structural unit 3, align the lower tenon 8 of the upper structural unit 3 with the reserved hole 5 of the lower structural unit 3. When the two are completely aligned, slowly lower it until the tenon 8 and the reserved hole 5 of the two structural units 3 are completely engaged.

[0054] S3: Repeat the installation method described in step S2 until all structural units 3 of the design height are installed.

[0055] S4: Hoist the top plate 2 to the corresponding position. Before installing the top plate 2, align the reserved holes 5 of each top plate 2 with the previously installed prestressing tendons 6. Ensure that all the prestressing tendons 6 of each structural unit 3 below pass through the corresponding reserved holes 5 of the top plate 2 before slowly lowering it. When the top plate 2 is lowered to a height close to the top of the lower structural unit 3, align the tenons 8 at the bottom of the top plate 2 with the reserved holes 5 of each lower structural unit 3. After all structures are aligned, slowly lower the top plate 2 until the tenons 8 of the top plate 2 and the reserved holes 5 of the structural unit 3 are completely engaged.

[0056] S5: Pass the multiple prestressed tendons 6 that protrude from the top of the top plate 2 through the corresponding sealing and anchoring structure 4, and slowly apply prestress to the prestressed tendons 6 with a prestressing tension jack. After the application is completed, cut off the excess exposed prestressed tendons 6 and perform sealing and anchoring treatment to complete the final assembly process.

[0057] In addition, a crushed stone cushion layer needs to be laid under the base plate 1. Specifically, the earthwork within the retaining wall foundation area needs to be excavated, the necessary foundation treatment needs to be carried out, the site needs to be leveled, and a 10cm thick concrete crushed stone cushion layer needs to be laid.

[0058] Furthermore, a sand-pebble filter layer can be installed on the back of the prefabricated gravity retaining wall. Specifically, after wrapping the drainage hole 7 of the structural unit 3 with permeable geotextile at the back end of the wall, the sand-pebble filter layer and the waterproof layer are filled and compacted in layers to ensure that the filter layer and the waterproof layer behind the wall are dense, thus completing the final assembly process.

[0059] This utility model provides a prefabricated gravity retaining wall with enhanced structural integrity, offering advantages such as high construction efficiency, strong seismic performance, minimal environmental impact, long service life, and aesthetically pleasing appearance. It connects each structural unit 3 via tenons 8 and pre-drilled holes 5, and prestressed tendons 6 connect the base plate 1, top plate 2, and each structural unit 3. After hoisting, the base plate 1, top plate 2, and structural unit 3 form a relatively locked state. Finally, the prestressed tendons 6 are tensioned and anchored, connecting all assembled structural components and achieving complete locking between them. While ensuring project safety, it effectively improves construction efficiency, enhances structural seismic performance, reduces the difficulty of curing large-volume concrete, enables batch quality control of concrete retaining wall modules, and reduces the health hazards to construction workers in harsh environments such as plateaus and deserts. It is suitable for retaining wall construction in various industries, including railways, subways, highways, and urban construction. Specifically, this utility model has the following technical advantages:

[0060] (1) Better quality control.

[0061] Compared to traditional cast-in-place retaining wall structures, prefabricated gravity retaining wall structures have their components prefabricated in a factory. This process takes place in a controlled environment, allowing for the implementation of a rigorous quality management system. During the on-site construction phase, the standardized design of component dimensions and interfaces significantly reduces the complexity and error rate of on-site construction, ensuring the standardization and normalization of the construction process.

[0062] (2) Better seismic performance.

[0063] Although prefabricated gravity retaining wall structures have larger displacements than monolithic gravity retaining walls, they are still under safe conditions. At the same time, prefabricated gravity retaining walls have significantly lower dynamic response than traditional monolithic gravity retaining walls. The structural characteristics of prefabricated gravity retaining walls can effectively dissipate dynamic load energy. Compared with monolithic gravity retaining walls, prefabricated gravity retaining walls have an overall seismic safety improvement of 40% and superior seismic performance.

[0064] (3) Improved production efficiency.

[0065] The construction of prefabricated gravity retaining wall structures has significantly improved production efficiency and shortened the overall construction cycle by using factory-produced prefabricated components, thereby accelerating the project progress and reducing construction time costs.

[0066] (4) More environmentally friendly.

[0067] Factory production has a smaller impact on the surrounding environment, helps improve the living environment of the construction site and surrounding residents, helps protect the ecological environment of the construction site, and reduces potential environmental risks.

[0068] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A prefabricated gravity retaining wall with enhanced structural integrity, characterized in that: The prefabricated gravity retaining wall includes multiple prefabricated structural units (3), and each structural unit (3) has a vertically through reserved channel (5). After multiple structural unit bodies (3) are vertically combined, multiple reserved channels (5) are vertically connected, prestressed tendons (6) are inserted and anchored, thereby connecting and combining the structural unit bodies (3) into one body; The bottom surface of the structural unit (3) has a downward protruding tenon (8), the shape of which matches the shape of the reserved hole (5); When the vertically adjacent structural unit bodies (3) are combined, the tenon (8) of the upper structural unit body (3) is inserted into the reserved hole (5) of the lower structural unit body (3). The prefabricated gravity retaining wall also includes a top plate (2) located on its top, on which multiple vertical reserved channels (5) are provided and arranged evenly in the horizontal direction; The top of the prestressed tendon (6) passes through the reserved hole (5) of the top plate (2) and is sealed by the anchoring structure (4); The bottom surface of the top plate (2) has a downward protruding tenon (8), the shape of which matches the shape of the reserved hole (5); When the top plate (2) is combined with the structural unit (3) located at the top layer, the tenon (8) is inserted into the reserved channel (5) of the structural unit (3) at the top layer. The prefabricated gravity retaining wall also includes a base plate (1) located at its bottom, on which multiple vertical reserved channels (5) are provided and arranged evenly in the horizontal direction; The bottom end of the prestressed tendon (6) passes through the reserved hole (5) of the base plate (1) and is anchored by the sealing anchor structure (4); The top surface of the structural unit (3) and the top of the reserved hole (5) are provided with a recessed groove that matches the shape of the tenon (8). When the vertically adjacent structural units (3) are combined, the tenon (8) of the upper structural unit (3) is inserted into the recessed groove of the lower structural unit (3).

2. The prefabricated gravity retaining wall for enhancing structural integrity according to claim 1, characterized in that: The bottom plate (1) has an upwardly protruding baffle (9) on one longitudinal side.

3. A prefabricated gravity retaining wall for enhancing structural integrity according to claim 1, characterized in that: The structural unit (3) is provided with longitudinal drainage holes (7).

4. A prefabricated gravity retaining wall for enhancing structural integrity according to claim 1, characterized in that: The longitudinal side of the structural unit (3) is an inclined surface, and the top surface area of ​​the structural unit (3) is smaller than the bottom surface area.

5. A prefabricated gravity retaining wall for enhancing structural integrity according to claim 4, characterized in that: The longitudinal side of the prefabricated gravity retaining wall is an inclined surface, and the top surface area of ​​the prefabricated gravity retaining wall is smaller than the bottom surface area.

6. A prefabricated gravity retaining wall for enhancing structural integrity according to claim 1, characterized in that: The prestressed tendon (6) is a prestressed steel strand or a prestressed anchor rod.

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