Anti-settling roadbed structure

Abstract

The application relates to the technical field of roadbed construction, in particular to a settlement-preventing roadbed structure which comprises retaining walls and a filling body, the filling body is arranged in an inverted conical shape between the two retaining walls, the filling body comprises a first water-permeable layer and a filling layer from bottom to top, the height of the top surface of the first water-permeable layer gradually decreases from the lateral center of the first water-permeable layer to the two retaining walls, a reinforcing mesh is arranged between the first water-permeable layer and the filling layer, the filling layer comprises a plurality of layered filling units from bottom to top, and the reinforcing mesh is arranged between the filling units, the reinforcing mesh is arranged in a normal arch shape, and a waterproof layer is further arranged on the upper layer of the uppermost reinforcing mesh. Through the above arrangement, the rainwater is guided, the stress of the roadbed is improved, and the uneven settlement of the roadbed is avoided.

Description

Technical Field

[0001] This application relates to the field of roadbed construction technology, and in particular to a roadbed structure for preventing settlement. Background Technology

[0002] Uneven settlement of roadbed is a common problem in road engineering, caused by differences in geological conditions, construction materials and techniques, and external environmental influences. Differential settlement can lead to cracks, misalignment, and damage to the base layer, affecting the road's service life, causing a surge in maintenance costs, and creating traffic safety hazards. While existing construction methods can reduce settlement to some extent, they are still difficult to completely prevent under complex geological conditions, such as in areas with abundant rainfall.

[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content

[0004] The purpose of this application is to provide a settlement-resistant roadbed structure to solve or alleviate the problems existing in the prior art.

[0005] To achieve the above objectives, this application provides the following technical solution: A settlement-resistant roadbed structure includes retaining walls and fill, wherein the fill is arranged in an inverted cone shape between the two retaining walls; The filling body includes, from bottom to top, a first permeable layer and a soil fill layer; the top height of the first permeable layer gradually decreases from the transverse center of the first permeable layer towards the retaining walls on both sides; a reinforcing mesh is laid between the first permeable layer and the soil fill layer. The fill layer comprises multiple layered fill units from bottom to top, and reinforcing mesh is laid between the fill units; The reinforcing mesh is arranged in a positive arch shape, and a waterproof layer is laid on the uppermost layer of the reinforcing mesh.

[0006] Preferably, the reinforcing mesh includes glass fiber reinforced mesh and steel mesh; glass fiber reinforced mesh is laid between the first permeable layer and the fill layer; and steel mesh is laid between the fill units.

[0007] Preferably, the two ends of the reinforcing mesh are turned up and fixedly installed on the retaining walls on both sides.

[0008] Preferably, the retaining wall is provided with a flow channel on the side near the fill material to guide water from the fill material into the first permeable layer.

[0009] Preferably, a second permeable layer is filled in the flow channel.

[0010] Preferably, multiple flow channels are arranged at intervals along the roadbed direction.

[0011] Preferably, a connector is also provided between the reinforcing mesh panels, and the two ends of the connector are respectively fixedly connected to the adjacent upper and lower reinforcing mesh panels in the vertical direction.

[0012] Preferably, multiple connectors are provided at transverse intervals along the reinforcing mesh.

[0013] Preferably, the connectors are arranged at vertical intervals along the reinforcing mesh.

[0014] Compared with the closest prior art, the technical solution of this application has the following beneficial effects: When rainwater infiltrates, it flows along the waterproof layer to the retaining walls on both sides, and then flows down the slope of the retaining walls into the first permeable layer under the action of gravity. This prevents rainwater from continuously infiltrating into the deeper fill units and affecting soil stability. At the same time, the inverted cone-shaped fill body, combined with the arch-shaped reinforcing mesh, provides effective lateral support through the retaining walls when the fill body is subjected to vertical loads, reducing the stress intensity of the fill body. This achieves the goal of preventing uneven settlement of the roadbed by both diverting rainwater and improving the stress on the roadbed. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. Wherein: Figure 1 This is a schematic cross-sectional view of an anti-settlement roadbed structure provided according to some embodiments of this application; Figure 2 This is a side view of a retaining wall near the fill material, provided according to some embodiments of this application; Figure 3 This is a top view of a retaining wall provided according to some embodiments of this application.

[0016] Explanation of reference numerals in the attached figures: 1. Retaining wall; 2. First permeable layer; 3. Backfill unit; 4. Fiberglass reinforced mesh; 5. Steel mesh; 6. Connector; 7. Second permeable layer; 8. Anchor hole. Detailed Implementation

[0017] The present application will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present application without departing from the scope or spirit thereof. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present application encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0018] In the following description, the terms "first / second / third" are used merely to distinguish similar objects and do not represent a specific order of objects. It is understood that "first / second / third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0019] 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 disclosure belongs. The terminology used herein is for the purpose of describing embodiments of this disclosure only and is not intended to limit this disclosure.

[0020] In the description of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and do not require that this application be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. The terms "connected," "linked," and "set up" used in this application should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; direct connections or indirect connections through intermediate components; wired connections, radio connections, or wireless communication signal connections. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0021] To avoid ambiguity, the horizontal direction perpendicular to the roadbed direction is now defined as the transverse direction.

[0022] The following will be combined with the appendix Figure 1-3 This application provides a more detailed description of a settlement-resistant roadbed structure.

[0023] A settlement-resistant roadbed structure includes retaining walls 1 and a backfill body, wherein the backfill body is arranged in an inverted cone shape between the two retaining walls 1; The filling body consists of a first permeable layer 2 and a soil fill layer from bottom to top; the top surface height of the first permeable layer 2 gradually decreases from the transverse center of the first permeable layer 2 towards the retaining walls 1 on both sides; a reinforcing mesh is laid between the first permeable layer 2 and the soil fill layer; The fill layer consists of multiple layered fill units 3 from bottom to top, and reinforcing mesh is laid between the fill units 3; The reinforcing mesh is arranged in a positive arch shape, and a waterproof layer is laid on top of the uppermost reinforcing mesh (not shown in the figure).

[0024] In a specific embodiment of this application, the first permeable layer 2 is constructed using pebbles with larger particle sizes, and the fill layer uses existing crushed stone and clay from the original site; drainage blind ditches are provided at the bottom of both ends of the first permeable layer 2.

[0025] By gradually lowering the height of the top surface of the first permeable layer 2 from its transverse center towards the retaining walls 1 on both sides, the reinforcing mesh laid on the top surface of the first permeable layer 2 forms a positive arch structure. Correspondingly, each layered filling unit 3 and the waterproof layer laid on top of the uppermost reinforcing mesh also have a positive arch structure. When rainwater infiltrates, it can flow along the waterproof layer to the retaining walls 1 on both sides, and then flow down the slope of the retaining walls 1 under gravity into the first permeable layer 2 and the drainage ditch, thus preventing rainwater from continuously seeping vertically into the deep filling units 3 and affecting soil stability. At the same time, the inverted cone-shaped filling body combined with the positive arch reinforcing mesh provides effective lateral support through the retaining walls 1 when the filling body is subjected to vertical loads, reducing the stress intensity of the filling body. This achieves the goal of preventing uneven settlement of the roadbed from two aspects: rainwater diversion and improvement of roadbed stress.

[0026] The reinforcing mesh includes glass fiber reinforced mesh 4 and steel mesh 5; glass fiber reinforced mesh 4 is laid between the first permeable layer 2 and the backfill layer; steel mesh 5 is laid between the backfill units 3.

[0027] Both glass fiber reinforced mesh 4 and steel mesh 5 are optional materials used to strengthen the integrity of the fill and prevent cracking. However, glass fiber reinforced mesh 4 has better corrosion resistance than steel mesh 5. In the specific embodiment of this application, in order to avoid the corrosion of steel mesh 5 from affecting the use effect, glass fiber reinforced mesh 4 is laid between the first permeable layer 2 and the fill layer.

[0028] To prevent the reinforcing mesh from shifting or deforming under load, the two ends of the reinforcing mesh are turned up and fixed on the retaining walls 1 on both sides.

[0029] In a specific embodiment of this application, both ends of the reinforcing mesh are anchored to the retaining walls 1 on both sides using anchor bolts.

[0030] To improve the flow diversion effect of retaining wall 1, a flow channel is provided on the side of retaining wall 1 near the fill body to guide the water in the fill body into the first permeable layer 2.

[0031] To prevent the fill material from encroaching into the flow channel during filling and thus affecting the flow channel's guiding effect, a second permeable layer 7 is filled in the flow channel.

[0032] In a specific embodiment of this application, the second permeable layer 7 is constructed by pebble stacking and is filled in layers along with the fill unit 3.

[0033] To further enhance the flow diversion effect of retaining wall 1, multiple flow channels are set at intervals along the roadbed direction.

[0034] In a specific embodiment of this application, along the roadbed direction, the flow channel and the anchoring hole 8 are staggered on the side of the retaining wall 1 near the fill body.

[0035] Connectors 6 are also provided between the reinforcing mesh panels. The two ends of the connectors 6 are fixedly connected to the adjacent upper and lower reinforcing mesh panels in the vertical direction.

[0036] In a specific embodiment of this application, the connector 6 is a steel bar; since the reinforcing mesh is arranged in a positive arch shape, the two ends of the steel bar are respectively fixedly connected to the nodes of the adjacent upper and lower reinforcing mesh in the vertical direction to stably support the upper and lower steel mesh 5 and strengthen the structural strength of the filling body; at the same time, the connector 6 can also serve as a reference for the layer filling thickness of the filling unit to improve the layer filling speed.

[0037] To further enhance the structural strength of the fill, multiple connectors 6 are spaced apart along the transverse direction of the reinforcing mesh.

[0038] To avoid uneven strength of the filling structure, the connectors 6 are spaced apart vertically along the reinforcing mesh. That is, the two adjacent rows of connectors 6 arranged vertically along the reinforcing mesh are also staggered along the transverse direction of the reinforcing mesh.

[0039] In actual construction, the retaining walls 1 on both sides are constructed first, followed by the construction of the filling body. The filling body is constructed from bottom to top in the following order: drainage blind ditch excavation, first permeable layer 2 filling, glass fiber reinforced mesh 4 fixed and laid, upper connector 6 fixed, second permeable layer 7 filling, soil filling unit 3 filling, steel mesh 5 fixed and laid and connected to lower connector 6. The process is repeated again, with upper connector 6 fixed, second permeable layer 7 filling, soil filling unit 3 filling, steel mesh 5 fixed and laid and connected to lower connector 6, until the uppermost steel mesh 5 is constructed. A waterproof layer is then laid and a concrete sealing layer is poured. The filling height of each soil filling unit 3 is based on the top elevation of the corresponding connector 6.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A settlement-resistant roadbed structure, characterized in that, It includes retaining walls and backfill, wherein the backfill is arranged in an inverted cone shape between the two retaining walls; The filling body includes, from bottom to top, a first permeable layer and a soil fill layer; the top height of the first permeable layer gradually decreases from the transverse center of the first permeable layer towards the retaining walls on both sides; a reinforcing mesh is laid between the first permeable layer and the soil fill layer. The fill layer comprises multiple layered fill units from bottom to top, and reinforcing mesh is laid between the fill units; The reinforcing mesh is arranged in a positive arch shape, and a waterproof layer is laid on the uppermost layer of the reinforcing mesh.

2. The anti-settlement roadbed structure as described in claim 1, characterized in that, The reinforcing mesh includes glass fiber reinforced mesh and steel mesh; glass fiber reinforced mesh is laid between the first permeable layer and the fill layer; steel mesh is laid between the fill units.

3. The anti-settlement roadbed structure as described in claim 1, characterized in that, The two ends of the reinforcing mesh are turned up and fixedly installed on the retaining walls on both sides.

4. The anti-settlement roadbed structure as described in claim 1, characterized in that, The retaining wall has a flow channel on the side near the fill material to guide water from the fill material into the first permeable layer.

5. The anti-settlement roadbed structure as described in claim 4, characterized in that, A second permeable layer is filled in the flow channel.

6. The anti-settlement roadbed structure as described in claim 4, characterized in that, Multiple flow channels are spaced out along the roadbed.

7. The anti-settlement roadbed structure as described in claim 1, characterized in that, Connectors are also provided between the reinforcing mesh panels, and the two ends of the connectors are respectively fixedly connected to the adjacent upper and lower reinforcing mesh panels in the vertical direction.

8. The anti-settlement roadbed structure as described in claim 7, characterized in that, Multiple connectors are arranged at intervals along the transverse direction of the reinforcing mesh.

9. A settlement-resistant roadbed structure as described in claim 8, characterized in that, The connectors are arranged at vertical intervals along the reinforcing mesh.

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