Combined structure suitable for half-excavated and half-filled roadbed on steep cross slope terrain

Abstract

The utility model discloses a combined structure suitable for a half-excavated and half-filled roadbed on a steep cross slope terrain. The combined structure comprises an excavation part, a filling part and a connecting structure for connecting the excavation part and the filling part, the excavation part comprises a plurality of anti-slide piles arranged in the longitudinal direction of the roadbed, the anti-slide piles are vertically embedded into a stable rock-soil layer of an excavation slope, a top beam is arranged at the tops of the anti-slide piles and connects the anti-slide piles into a whole, an anchoring plate is arranged on the side, facing the filling part, of the top beam, and a plurality of anchoring holes are formed in the anchoring plate. By arranging the anti-sliding piles and the top beams, the anti-sliding capacity of the excavated part can be effectively improved, and the stability of the excavated side slope is guaranteed; and through the arrangement of the connecting anchor rods and the nuts, the filling part and the excavation part are tightly connected, and the overall structural strength of the roadbed is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of road engineering technology, specifically to a combined structure suitable for semi-cut and semi-fill roadbeds on steep transverse slope terrain. Background Technology

[0002] In mountainous and other steeply sloping terrains, a semi-cut-and-fill roadbed is a common construction method. However, due to the unique characteristics of the terrain, traditional semi-cut-and-fill roadbeds are prone to problems such as fill slippage and uneven settlement at the cut-and-fill junction, severely affecting the stability of the roadbed and the service life of the road. Currently, although there are some treatment measures for steeply sloping roadbeds, they still have shortcomings in terms of structural integrity, construction convenience, and long-term stability, making it difficult to meet the actual needs of engineering projects. Utility Model Content

[0003] The purpose of this utility model is to provide a combined structure for semi-cut and semi-fill roadbeds suitable for steep cross-slope terrain, so as to solve the problems of poor stability and uneven settlement of semi-cut and semi-fill roadbeds on steep cross-slope terrain in the prior art, and improve the overall performance and service life of the roadbed. One of the objectives of this utility model is achieved by the following technical solution:

[0004] A combined structure for semi-cut and semi-fill roadbeds suitable for steep transverse slope terrain includes a cut section, a fill section, and a connecting structure connecting the two. The cut section includes multiple anti-slide piles arranged longitudinally along the roadbed. The anti-slide piles are vertically embedded in the stable soil and rock layer of the cut slope. A capping beam is provided at the top of the anti-slide piles, which connects the multiple anti-slide piles into a whole. An anchor plate is provided on the side of the capping beam facing the fill section, and multiple anchor holes are provided on the anchor plate.

[0005] Furthermore, the filling section includes, from bottom to top, a crushed stone cushion layer, a geogrid layer, and compacted fill. A connecting wall is provided on the side of the filling section near the excavation section, and multiple connecting anchors corresponding to the anchor holes are pre-embedded in the connecting wall.

[0006] Furthermore, the connecting anchor rod passes through the anchoring hole and is fastened with a nut; the connecting structure includes a stepped connecting surface set at the junction of the excavation section and the filling section, a waterproof geotextile is laid on the stepped connecting surface, and a horizontal reinforcing strip is set on the step of the stepped connecting surface. One end of the reinforcing strip is fixed in the rock mass of the excavation section, and the other end is buried in the compacted fill of the filling section.

[0007] Furthermore, the crushed stone cushion layer is laid on the fill base for drainage and uniform force transmission.

[0008] Furthermore, the geogrid layer is placed above the crushed stone cushion layer to enhance the integrity and stability of the fill.

[0009] Furthermore, the waterproof geotextile can prevent rainwater from seeping into the junction between the excavated and backfill sections.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model can effectively improve the anti-slide capacity of the excavated section and ensure the stability of the excavated slope by setting anti-slide piles and cap beams; the setting of connecting anchor rods and nuts can tightly connect the filling section and the excavated section, thereby enhancing the overall structural strength of the roadbed.

[0012] 2. The combination of crushed stone cushion layer, geogrid layer and compacted fill improves the mechanical properties of the fill section and reduces the settlement of the fill; the setting of stepped connection surface, waterproof geotextile and reinforcement strip improves the waterproof performance and connection strength at the cut and fill junction, effectively preventing uneven settlement and fill slippage.

[0013] 3. The combined structure is reasonably designed, with each component working together, making construction convenient. It can significantly improve the stability and service life of semi-cut and semi-fill roadbeds on steep cross slopes, and has good engineering application value.

[0014] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a perspective view of this embodiment;

[0016] Figure 2 This is a schematic diagram of the stepped connection surface structure of the components in this embodiment;

[0017] Figure 3 This is a schematic diagram of the crown beam structure of the component in this embodiment;

[0018] Figure 4 This is a schematic diagram of the reinforcing strip structure of the component in this embodiment;

[0019] Figure 5 This is a schematic diagram of the component connection wall structure in this embodiment;

[0020] Figure 6 This is a schematic diagram of the component anchor plate structure in this embodiment.

[0021] In the diagram: 1. Excavation section; 11. Anti-slide pile; 12. Crown beam; 13. Anchor plate; 131. Anchor hole; 2. Fill section; 21. Crushed stone cushion layer; 22. Geogrid layer; 23. Compacted fill; 24. Connecting wall; 241. Connecting anchor; 3. Connecting structure; 31. Stepped connection surface; 32. Waterproof geotextile; 33. Reinforcing strip; 4. Nut. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] 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 herein 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.

[0025] Please see Figures 1 to 6This embodiment describes a combined structure for a semi-cut and semi-fill roadbed suitable for steep transverse slope terrain. It includes a cut section 1, a fill section 2, and a connecting structure 3 connecting the two. The cut section 1 includes multiple anti-slide piles 11 arranged longitudinally along the roadbed. The anti-slide piles 11 are vertically embedded in the stable soil and rock layer of the cut slope. A capping beam 12 is provided at the top of each anti-slide pile 11, connecting the multiple anti-slide piles 11 into a whole. An anchoring plate 13 is provided on the side of the capping beam 12 facing the fill section 2, and multiple anchoring holes 131 are provided on the anchoring plate 13. The fill section 2, from bottom to top, includes a crushed stone cushion layer 21, a geogrid layer 22, and compacted fill 23. A connecting wall 24 is provided on the side of the fill section 2 closest to the cut section 1, and multiple anchoring holes are pre-embedded within the connecting wall 24. The corresponding connecting anchor 241 passes through the anchoring hole 131 and is fastened by the nut 4; the connecting structure 3 includes a stepped connecting surface 31 set at the junction of the excavation section 1 and the filling section 2, a waterproof geotextile 32 is laid on the stepped connecting surface 31, and a horizontal reinforcing strip 33 is set on the step of the stepped connecting surface 31. One end of the reinforcing strip 33 is fixed in the rock mass of the excavation section 1, and the other end is buried in the compacted fill 23 of the filling section 2. The crushed stone cushion layer 21 is laid on the filling base for drainage and uniform force transmission. The geogrid layer 22 is set on the crushed stone cushion layer 21 to enhance the integrity and stability of the filling. The waterproof geotextile 32 can prevent rainwater from seeping into the junction of the excavation section 1 and the filling section 2.

[0026] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A combined structure for semi-cut and semi-fill roadbeds suitable for steep transverse slope terrain, characterized in that, It includes an excavation section (1), a filling section (2), and a connecting structure (3) connecting the two. The excavation section (1) includes multiple anti-slide piles (11) arranged longitudinally along the roadbed. The anti-slide piles (11) are vertically embedded in the stable soil and rock layer of the excavation slope. The top of the anti-slide piles (11) is provided with a capping beam (12). The capping beam (12) connects multiple anti-slide piles (11) into a whole. An anchor plate (13) is provided on the side of the capping beam (12) facing the filling section (2). Multiple anchor holes (131) are opened on the anchor plate (13).

2. The combined structure for a semi-cut and semi-fill roadbed suitable for steep transverse slope terrain according to claim 1, characterized in that: The filling section (2) consists of a crushed stone cushion layer (21), a geogrid layer (22) and compacted fill (23) from bottom to top. A connecting wall (24) is provided on the side of the filling section (2) close to the excavation section (1). Multiple connecting anchors (241) corresponding to the anchor holes (131) are pre-embedded in the connecting wall (24).

3. A combined structure for a semi-cut and semi-fill roadbed suitable for steep transverse slope terrain as described in claim 2, characterized in that: The connecting anchor (241) passes through the anchor hole (131) and is fastened by the nut (4); the connecting structure (3) includes a stepped connecting surface (31) set at the junction of the excavation part (1) and the filling part (2), a waterproof geotextile (32) is laid on the stepped connecting surface (31), and a horizontal reinforcing strip (33) is set on the step of the stepped connecting surface (31). One end of the reinforcing strip (33) is fixed in the rock mass of the excavation part (1), and the other end is buried in the compacted fill (23) of the filling part (2).

4. A combined structure for a semi-cut and semi-fill roadbed suitable for steep transverse slope terrain as described in claim 3, characterized in that: The crushed stone cushion layer (21) is laid on the fill base for drainage and uniform force transmission.

5. A combined structure for a semi-cut and semi-fill roadbed suitable for steep transverse slope terrain as described in claim 4, characterized in that: The geogrid layer (22) is placed above the crushed stone cushion layer (21) to enhance the integrity and stability of the fill.

6. A combined structure for a semi-cut and semi-fill roadbed suitable for steep transverse slope terrain as described in claim 5, characterized in that: The waterproof geotextile (32) can prevent rainwater from seeping into the junction of the excavation section (1) and the filling section (2).

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