MSE wall for viaduct channel

Abstract

The utility model relates to the technical field of retaining walls, in particular to an MSE wall structure for a viaduct passage, which comprises a support panel arranged on an original roadbed layer and a retaining structure vertically arranged on the support panel, and the retaining structure comprises a bottom retaining wall and a plurality of heightened retaining walls which are sequentially arranged from bottom to top. A first reinforced structure is horizontally embedded in the side face of the supporting panel, backfill soil is laid on the first reinforced structure, a plurality of second reinforced structures are arranged on the side face, facing the backfill soil, of the soil retaining structure in the height direction of the soil retaining structure, the number of the reinforced structures is equal to that of the heightened retaining walls, and each heightened retaining wall takes a backfill soil compaction layer at the bottom of the heightened retaining wall as a base. And backfill soil flush with the heightened retaining wall is laid on the second reinforced structure. According to the utility model, the plurality of reinforced structures and the plurality of heightened retaining walls are arranged, so that the retaining walls are reinforced in all directions, and the anti-sliding, anti-overturning and anti-settling capacities of the wall body can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of retaining wall technology, and in particular to an MSE wall for elevated bridge passages. Background Technology

[0002] Mechanically Stabilized Earth Wall (MSE) is a widely used structural form in infrastructure construction, particularly in viaducts and highway projects. MSE walls provide stability and support by using reinforcing materials (such as steel reinforcement strips or geosynthetics) in conjunction with the backfill. This type of wall can withstand not only vertical loads but also effectively resist horizontal loads, offering advantages such as high efficiency, economy, and ease of construction.

[0003] In elevated bridge passages, MSE (Medium-Self-Extended Elevation) walls are commonly used as abutments or side walls to support the superstructure and road, resist pressure from bridge and traffic loads, and ensure the long-term stability of the structure. However, as the wall height increases, the impact of seismic loads, wind loads, and the wall's own weight also increases. Therefore, the design of high walls must pay special attention to stability to avoid sliding, overturning, and overall instability.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background technology of this utility model, and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an MSE wall for elevated bridge passages that, while ensuring an increase in wall height, avoids sliding, overturning, and overall instability.

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

[0007] An MSE wall structure for elevated bridge passages includes a support panel installed on the existing roadbed and a retaining structure vertically installed on the support panel.

[0008] The retaining structure includes a bottom retaining wall and multiple raised retaining walls arranged sequentially from bottom to top. A foundation pit is provided on the roadbed for embedding the support panel. The height of the support panel is greater than the depth of the foundation pit. A first reinforcing structure is horizontally embedded on the side of the support panel. Backfill soil is laid on the first reinforcing structure. The height of the backfill soil is flush with the bottom retaining wall. Multiple second reinforcing structures are arranged along the height direction on the side of the retaining structure facing the backfill soil. The number of reinforcing structures is equal to the number of raised retaining walls. Each raised retaining wall uses the compacted backfill soil layer at its bottom as a base, and backfill soil flush with the raised retaining wall is laid on the second reinforcing structure.

[0009] Furthermore, the first and second reinforced structures are parallel to each other.

[0010] Furthermore, the retaining structure is also equipped with a vertically reinforced structure installed on the support panel, the height of which is the sum of the heights of the bottom retaining wall and the heightened retaining wall.

[0011] Furthermore, precast panels are provided on both sides of the vertically reinforced structure, and the two precast panels are fixed to the vertically reinforced structure to form a retaining structure.

[0012] Furthermore, the prefabricated panel is an axisymmetric cross-shaped structure, including a first rectangular plate and two second rectangular plates disposed at both ends of the first rectangular plate in the width direction.

[0013] Furthermore, the length of the second rectangular plate is less than the length of the first rectangular plate, and the width of the second rectangular plate is 1 / 2 of the width of the first rectangular plate.

[0014] Furthermore, a connecting lug is provided at the connection position of the first rectangular plate and the second rectangular plate, and a second reinforcing structure is provided on the connecting lug.

[0015] Furthermore, the first rectangular plate is divided along the center of its wide side to form two convex plates, each of which is formed by the second rectangular plate and half of the first rectangular plate.

[0016] Furthermore, the end of the convex plate away from the second rectangular plate is fixed to the support panel, and the bottom of the two convex plates is spaced apart by the width of the second rectangular plate for splicing with the prefabricated panel.

[0017] Furthermore, anti-slip pads are provided at the joint of the two prefabricated panels.

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

[0019] This invention provides comprehensive reinforcement to the retaining wall by setting multiple reinforcing structures (first reinforcing structure, second reinforcing structure, and vertical reinforcing structure), effectively improving the wall's resistance to sliding, overturning, and settlement. The design of multiple heightened retaining walls and prefabricated panels allows for modular construction, facilitating flexible adjustment and combination on walls of different heights and reducing construction difficulty. Attached Figure Description

[0020] 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 recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the installation of the first stiffening structure and the vertical stiffening structure in an embodiment of this utility model;

[0022] Figure 2 This is a schematic diagram of the laying structure of the first layer of MSE wall in an embodiment of this utility model;

[0023] Figure 3 This is a side view of the first layer of MSE wall in an embodiment of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the prefabricated panel in an embodiment of this utility model;

[0025] Reference numerals: 10, roadbed; 20, support panel; 30, retaining structure; 31, bottom retaining wall; 32, heightened retaining wall; 11, foundation pit; 21, first reinforced structure; 22, backfill; 33, second reinforced structure; 23, vertical reinforced structure; 34, precast panel; 35, first rectangular panel; 36, second rectangular panel; 37, connecting lug. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] like Figures 1-4 The MSE wall structure shown includes a support panel 20 installed on the existing roadbed 10, and a retaining structure 30 vertically installed on the support panel 20.

[0030] The retaining structure 30 includes a bottom retaining wall 31 and multiple raised retaining walls 32 arranged sequentially from bottom to top. A pit 11 for embedding a support panel 20 is provided on the roadbed 10. The height of the support panel 20 is greater than the depth of the pit 11. A first reinforcing structure 21 is horizontally embedded on the side of the support panel 20. Backfill soil 22 is laid on the first reinforcing structure 21, and the height of the backfill soil 22 is flush with the bottom retaining wall 31. Multiple second reinforcing structures 33 are arranged along the height direction on the side of the retaining structure 30 facing the backfill soil 22. The number of reinforcing structures is equal to the number of raised retaining walls 32. Each raised retaining wall 32 has its bottom backfill soil 22 compacted layer as a base, and backfill soil 22, flush with the raised retaining wall 32, is laid on the second reinforcing structure 33. The backfill material for the reinforced walls should be placed and compacted to within 2% of the optimum moisture content or 2% dryness.

[0031] Specifically, the reinforced backfill soil 22 should be poured on the back and in the middle of the reinforced structure or parallel to it, and compacted towards the front and away from the front. No construction equipment should ever come into direct contact with the reinforced structure, as this could damage the reinforcing steel. The soil layer should be compacted to 50 mm above the connection height of each layer of reinforced structure, but not below the height of the precast panel 34 of that layer, before the precast panel 34 is placed.

[0032] It should be noted that the purpose of excavating the foundation pit 11 in the roadbed 10 is not to achieve a solid ground, but simply to level the area and remove organic matter. The supporting panel 20 is a single neoprene rubber panel, and its top is also equipped with reinforcement material. The multi-layer retaining wall design in this application allows the wall to resist overturning forces in layers. Especially in the case of high walls, the layered resistance through the bottom retaining wall 31 and the heightened retaining wall 32 further enhances the anti-overturning capacity. Layered reinforcement allows the stress in each layer of the wall to be reasonably distributed, reducing the risk of local instability caused by stress concentration and improving the safety of the overall structure. The layered backfilling and reinforcement design simplifies the quality control during construction, allowing for layer-by-layer reinforcement after each layer of backfill soil 22 is compacted, improving construction efficiency and quality.

[0033] This invention provides comprehensive reinforcement to the retaining wall by setting multiple reinforcing structures (first reinforcing structure 21, second reinforcing structure 33, and vertical reinforcing structure 23), effectively improving the wall's resistance to sliding, overturning, and settlement. The design of multiple heightened retaining walls 32 and prefabricated panels 34 allows for modular construction of the wall, facilitating flexible adjustment and combination on walls of different heights and reducing construction difficulty.

[0034] The support panel 20 in this application provides a robust foundation, ensuring the stability of the entire wall structure, and reduces the risk of displacement of the support panel 20 through the embedding of the foundation pit 11. Specifically, the support panel 20 evenly distributes the vertical load of the wall onto the foundation, reducing the unevenness of foundation settlement and further improving the overall stability of the wall. Furthermore, by installing the support panel 20 in the foundation pit 11, the drainage of groundwater can be optimized, reducing the risk of water pressure erosion of the wall.

[0035] like Figure 2 As shown, the first reinforcing structure 21 and the second reinforcing structure 33 are parallel to each other. Specifically, the first reinforcing structure 21 is horizontally embedded in the side of the supporting panel 20, and multiple second reinforcing structures 33 are arranged along the height direction of the retaining structure 30, equal to the number of the heightened retaining wall 32. The arrangement of multiple reinforcing structures ensures the integrity of the wall and reduces the risk of structural instability caused by soil deformation or uneven settlement. It effectively enhances the wall's anti-sliding ability and prevents soil slippage caused by lateral pressure.

[0036] like Figure 1As shown, the retaining structure 30 is also provided with a vertically reinforced structure 23 vertically mounted on the supporting panel 20. The height of the vertically reinforced structure 23 is the sum of the heights of the bottom retaining wall 31 and the heightened retaining wall 32. The vertically reinforced structure 23 provides additional stiffness, enabling the wall to better resist vertical and horizontal loads, especially in the case of high walls, effectively reducing lateral deformation of the wall. The full-height coverage of the vertically reinforced structure 23 ensures that the wall has consistent shear strength and stability throughout its entire height range, preventing structural instability.

[0037] Specifically, such as Figure 3 As shown, precast panels 34 are provided on both sides of the vertically reinforced structure 23. The two precast panels 34 are fixed to the vertically reinforced structure 23 to form a retaining structure 30. Specifically, after the precast panels 34 are installed, they are fixed and aligned with wooden wedges, then concrete is poured in place for fixation. After curing, the wooden wedges are removed, and backfill soil 22 is filled in, followed by further assembly. The combination of precast panels 34 and vertically reinforced structure 23 not only provides surface protection for the wall but also further enhances the overall strength of the structure, improving the wall's ability to resist external loads.

[0038] like Figure 4 As shown, the prefabricated panel 34 is an axisily symmetrical cross-shaped structure, including a first rectangular plate 35 and two second rectangular plates 36 disposed at both ends of the width direction of the first rectangular plate 35. The length of the second rectangular plate 36 is less than the length of the first rectangular plate 35, and the width of the second rectangular plate 36 is 1 / 2 of its width. The first rectangular plate 35 is divided along its wide side center to form two convex plates, each convex plate being formed by the second rectangular plate 36 and half of the first rectangular plate 35. The cross-shaped prefabricated panel 34 design ensures the flatness and aesthetics of the wall appearance, while also flexibly adapting to different design needs, satisfying both aesthetic and functional requirements.

[0039] Please continue to refer to this. Figure 2 A connecting lug 37 is provided at the connection position between the first rectangular plate 35 and the second rectangular plate 36, and a second reinforcing structure 33 is provided on the connecting lug 37. Specifically, a strip connection, an immersion connection, or a bolt connection can be used, depending on the applicable type.

[0040] Specifically, the end of the convex panel away from the second rectangular panel 36 is fixed to the supporting panel 20. The bottoms of the two convex panels are spaced apart by the width of the second rectangular panel 36 for splicing with the precast panel 34. Anti-slip washers are provided at the splicing points of the two precast panels 34. The rational design of the splicing structure increases the shear strength of the wall at the joint, further improving the overall shear stability of the wall. It ensures a tight connection between the precast panel 34 and the supporting panel 20, effectively preventing loosening or displacement due to wall deformation or external loads. Throughout the construction of the segmented panel wall, the precast panel 34 can only be placed on the ground and / or on top of the leveling structure. Panels are not allowed to be placed on top of panels that are not fully filled.

[0041] This utility model, through the combination of multi-layer reinforcement, multi-layer retaining walls, vertical reinforcement, and precast panels 34, not only enhances the overall stability, durability, and load-bearing capacity of the wall, but also takes into account construction convenience and aesthetics. This ensures that the application of MSE walls in viaduct passages can meet various engineering requirements, while reducing construction risks and costs.

[0042] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An MSE wall structure for elevated bridge passageways, characterized in that, This includes support panels installed on the existing roadbed, and retaining structures vertically installed on the support panels. The retaining structure includes a bottom retaining wall and multiple raised retaining walls arranged sequentially from bottom to top. A foundation pit is provided on the roadbed for embedding the supporting panel. The height of the supporting panel is greater than the depth of the foundation pit. A first reinforcing structure is horizontally embedded on the side of the supporting panel. Backfill soil is laid on the first reinforcing structure, and the height of the backfill soil is flush with the bottom retaining wall. Multiple second reinforcing structures are arranged along the height direction on the side of the retaining structure facing the backfill soil. The number of second reinforcing structures is equal to the number of raised retaining walls. Each raised retaining wall uses its bottom backfill soil compaction layer as a base, and backfill soil flush with the raised retaining wall is laid on the second reinforcing structure.

2. The MSE wall structure for elevated bridge passages according to claim 1, characterized in that, The first reinforced structure and the second reinforced structure are parallel to each other.

3. The MSE wall structure for elevated bridge passages according to claim 2, characterized in that, The retaining structure is also provided with a vertically reinforced structure that is vertically installed on the support panel. The height of the vertically reinforced structure is the sum of the heights of the bottom retaining wall and the heightened retaining wall.

4. The MSE wall structure for elevated bridge passages according to claim 3, characterized in that, Precast panels are provided on both sides of the vertically reinforced structure, and the two precast panels are fixed to the vertically reinforced structure to form the retaining structure.

5. The MSE wall structure for elevated bridge passages according to claim 4, characterized in that, The prefabricated panel is a cross-shaped structure arranged symmetrically on an axis, including a first rectangular plate and two second rectangular plates disposed at both ends of the width direction of the first rectangular plate.

6. The MSE wall structure for elevated bridge passages according to claim 5, characterized in that, The length of the second rectangular plate is less than the length of the first rectangular plate, and the width of the second rectangular plate is 1 / 2 of the width of the first rectangular plate.

7. The MSE wall structure for elevated bridge passages according to claim 6, characterized in that, A connecting lug is provided at the connection position between the first rectangular plate and the second rectangular plate, and the second reinforcing structure is provided on the connecting lug.

8. The MSE wall structure for elevated bridge passages according to claim 6, characterized in that, Divide the first rectangular plate along its wide side center to form two convex plates, each of which is formed by the second rectangular plate and half of the first rectangular plate.

9. An MSE wall structure for elevated bridge passages according to claim 8, characterized in that, The end of the convex plate away from the second rectangular plate is fixed to the support panel, and the bottom of the two convex plates are spaced apart by the width of the second rectangular plate for splicing with the prefabricated panel.

10. An MSE wall structure for an elevated bridge passage according to claim 9, characterized in that, Anti-slip pads are provided at the joint of the two prefabricated panels.

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