Upper embankment road heightening structure

Abstract

The utility model provides an upper embankment road heightening structure, and relates to the technical field of flood prevention roads of water conservancy projects. According to the upper embankment road heightening structure, longitudinal and transverse sliding of the upper embankment road of the heightened part is limited through the friction anti-sliding effect between the bottom plate and the pavement foundation bed and the embedded shear resistance effect of the tenon and the mortise groove, planar two-dimensional constraint is achieved, and the overall stability of an embankment is effectively ensured; the transverse supporting beams are arranged in the U-shaped grooves, transverse displacement of the side walls on the two sides is limited through opposite-pull constraint, and the structural safety is further improved; anti-collision guardrails are arranged at the tops of the side walls, so that driving safety is guaranteed, land is intensive, construction is easy, and reliability is high; the heightened road surface is located in the U-shaped groove, the lower portion of the heightened road surface is in transition connection with the bottom plate through plain soil rolling backfilling, the upper shoulder edge is supported, blocked and closed through the side wall, the newly-added occupied area can be remarkably reduced, the land use index pressure is relieved, and meanwhile the problems that due to uneven settlement of a new embankment and an old embankment, slope filling is misplaced and collapsed, and the road surface is cracked are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of flood control roads in water conservancy projects, in particular to a levee road heightening structure. Background Art

[0002] Levees are one of the key flood control structures in water conservancy projects, playing a crucial role in flood storage, flood prevention, and security throughout the years. According to surveys, most levees are relatively old and primarily sloped earth embankments. Due to limitations in funding, construction machinery, and technical expertise at the time, overall levee construction standards were low, resulting in subpar quality. Currently, with high-quality economic and social development, upgrading existing levees to meet standards and increasing their height and thickness has become imperative.

[0003] To facilitate flood control and rescue efforts, material transportation, and the livelihoods of local residents, multiple access roads are typically constructed along existing embankments. Due to the widening and thickening of the embankment sides, these access roads must be raised and lengthened during the embankment reinforcement process to restore their existing functionality. Traditionally, after clearing the existing embankment road foundation and surface, bare soil is backfilled and compacted layer by layer, sloping the sides of the road. The embankment has a trapezoidal cross-section. In practice, the quality of the newly constructed fill embankments in the raised embankment sections varies widely, often resulting in uneven settlement, misaligned landslides, and pavement cracking and damage, seriously impacting the normal use and structural safety of the access roads. Furthermore, sloping and filling the access roads creates additional land occupation, even encroaching on permanent basic farmland. This makes land acquisition and relocation coordination difficult, the project is costly, and implementation is challenging.

[0004] To sum up, with the land resources becoming increasingly scarce and the land use indicators being gradually tightened, it is urgent to explore a combined structure for raising the embankment road that is both safe and stable in structure, convenient in construction, and intensive in land use and has strong land-saving performance, so as to give full play to its comprehensive benefits. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a structure for raising the upper embankment road, which solves the problem that the quality of the structure for raising the upper embankment road is difficult to guarantee and that additional land is occupied.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] An upper embankment road raising structure, comprising: a U-shaped trough and a raised road surface;

[0008] Several U-shaped grooves are connected end to end and located on the top of the original upper embankment road, and the raised road surface is paved in the U-shaped grooves;

[0009] The U-shaped groove includes: a bottom plate, side walls, a transverse support beam, a longitudinal tenon and a transverse tenon;

[0010] The bottom plate is provided with side walls extending upward on both sides, and the tops of the two side walls are connected by a plurality of transverse support beams, which are used to restrain the side walls from displacement; the bottom surface of the bottom plate is provided with longitudinal tenons and transverse tenons;

[0011] A mortise and tenon matching the longitudinal tenon and the transverse tenon is provided on the road surface base bed at the top of the original upper embankment road, and the longitudinal tenon and the transverse tenon are engaged with the mortise and tenon.

[0012] Preferably, the U-shaped trough is integrally cast reinforced concrete.

[0013] Preferably, the side slopes on both sides of the original upper embankment road are paved with turf for protection after clearing the foundation and surface and trimming the slope surface, and the slope surface is trimmed at a slope not steeper than 1:2.

[0014] Preferably, an anti-collision guardrail is provided on the top of the side wall.

[0015] Preferably, the bottom plate adopts a raft foundation, and the bottom plate thickness H1 is 0.4m to 0.5mm.

[0016] Preferably, the side wall height H2 gradually matches the longitudinal slope ratio I of the upper embankment road, the longitudinal slope ratio I is 8% to 10%, and the wall thickness B2 is 0.4m to 0.5mm.

[0017] Preferably, the wheelbase of the transverse support beam is 4.5m to 5.5m, and the cross-sectional dimensions of the transverse support beam in terms of width × height are 0.3m × 0.5m to 0.4m × 0.6m.

[0018] Preferably, each U-shaped groove is provided with a longitudinal tenon and two transverse tenons, the longitudinal tenon is located at the central axis of the base plate, and a transverse tenon is provided at each of the front and rear ends of the base plate; the cross-sectional dimensions of the longitudinal tenon are width × height of 0.4m × 0.6m, and the cross-sectional dimensions of the transverse tenon are width × height of 0.4m × 0.6m.

[0019] Preferably, the elevated road surface comprises, from bottom to top, a rolled backfill soil layer, a graded crushed stone subbase, a cement stabilized crushed stone base layer and a concrete road surface layer;

[0020] The top layer of the elevated road surface is provided with a bidirectional transverse slope with a slope ratio i of 1% to 2%, and the end of the slope surface is flush with the top of the side wall.

[0021] Preferably, the longitudinal length of the U-shaped groove is 10m to 12m, the width of the slits between adjacent U-shaped grooves is 20mm to 30mm, and the slits are filled with low-foaming high-pressure polyethylene closed-cell foam plastic boards.

[0022] The utility model provides a structure for raising the upper embankment road. Compared with the existing technology, it has the following beneficial effects:

[0023] In the present invention, the upper embankment road raising structure limits the vertical and horizontal bidirectional sliding of the raised upper embankment road through the friction anti-skid effect between the bottom plate and the road surface subgrade and the shear resistance of the tenon and mortise, realizes the two-dimensional constraint in the plane, and effectively ensures the overall stability of the embankment; a transverse support beam is arranged in the U-shaped groove, which limits the lateral displacement of the side walls on both sides through tension constraint, thereby further improving the structural safety; an anti-collision guardrail is arranged on the top of the side wall, which ensures land intensiveness, simple construction and high reliability while ensuring driving safety; the raised road surface is located in the U-shaped groove, and the lower part is connected to the bottom plate through the rolling backfill of plain soil, and the upper shoulder edge is supported by the side wall to reduce the slope, which can significantly reduce the newly added land occupation and alleviate the pressure of land use indicators, and also avoid the problem of uneven settlement of the new and old embankments leading to dislocation and collapse of the slope fill and cracking of the road surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a structural diagram of the upper embankment road heightening structure in an embodiment of the present utility model;

[0026] Figure 2 This is a vertical cross-sectional view of the upper embankment road heightening structure in an embodiment of the present utility model;

[0027] Figure 3 This is a schematic structural diagram of a U-shaped groove in an embodiment of the present utility model;

[0028] The reference numerals in the figure are set as: original upper embankment road 10, slope 11, road surface base 12, U-shaped groove 20, bottom plate 21, side wall 22, transverse support beam 23, anti-collision guardrail 24, longitudinal tenon 25, transverse tenon 26, raised road surface 30, road surface layer 31, base layer 32, subbase layer 33, and bare soil layer 34. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] The embodiment of the present application solves the problem that the quality of the embankment road raising structure is difficult to ensure and that additional land is occupied by the embankment road raising structure by providing an embankment road raising structure.

[0031] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0032] Example:

[0033] like Figures 1 to 3 As shown, the utility model provides a structure for raising the upper embankment road, which comprises: a U-shaped groove 20 and a raised road surface 30;

[0034] A plurality of U-shaped grooves 20 are connected end to end and are located on the top of the original upper embankment road 10, and the raised road surface 30 is paved in the U-shaped grooves 20;

[0035] The U-shaped groove 20 includes: a bottom plate 21, side walls 22, a transverse support beam 23, a longitudinal tenon 25 and a transverse tenon 26;

[0036] The bottom plate 21 is provided with upwardly extending side walls 22 on both sides. The tops of the two side walls 22 are connected by a plurality of transverse support beams 23. The transverse support beams 23 are used to restrain the side walls 22 from displacement. The bottom surface of the bottom plate 21 is provided with longitudinal tenons 25 and transverse tenons 26.

[0037] The road surface base 12 at the top of the original upper embankment road 10 is provided with a mortise and tenon matching the longitudinal tenon 25 and the transverse tenon 26. The longitudinal tenon 25 and the transverse tenon 26 are engaged with the mortise and tenon to form a two-dimensional anti-slip constraint system.

[0038] The U-shaped groove 20 is integrally cast with reinforced concrete and is directly cast on the road surface base bed 12 with the mortise grooves formed.

[0039] like Figure 1 、 Figure 2 As shown, the side slopes 11 on both sides of the original upper embankment road 10 are covered with turf for protection after clearing the foundation and surface and trimming the slope surface. The average thickness of the clearing is 0.2m to 0.3m, and the slope surface is trimmed at a slope not steeper than 1:2.

[0040] like Figure 2 As shown, a crash barrier 24 is provided on the top of the side wall 22; the crash barrier 24 adopts a longitudinally extending corrugated beam crash barrier in the form of Gr-B-2B2, which is connected to the top of the U-groove side wall 22 through anchor bolts, and the anchor bolt specification is 4 sets of M20, and the bolt length is not less than 600mm.

[0041] like Figure 2As shown, the bottom plate 21 adopts a raft foundation, the bottom plate thickness H1 is 0.4m-0.5mm, the bottom plate width B1 and the bottom plate top surface elevation ▽H match the road subgrade 12;

[0042] The height H2 of the side wall 22 gradually changes with the longitudinal slope ratio I of the upper embankment road, the longitudinal slope ratio I is 8% to 10%, and the wall thickness B2 is 0.4m to 0.5mm;

[0043] The wheelbase of the transverse support beam 23 is 4.5m to 5.5m, and the cross-sectional dimensions of the transverse support beam 23 are 0.3m×0.5m to 0.4m×0.6m in width and height;

[0044] Each U-shaped groove 20 is provided with a longitudinal tenon 25 and two transverse tenons 26. The longitudinal tenon 25 is located at the central axis of the bottom plate 21, and a transverse tenon 26 is provided at each of the front and rear ends of the bottom plate 21. The cross-sectional dimensions of the longitudinal tenon 25 are 0.4m×0.6m in width×height, and the cross-sectional dimensions of the transverse tenon 26 are 0.4m×0.6m in width×height.

[0045] like Figure 1 、 Figure 2 As shown, the elevated road surface 30 includes, from bottom to top, a rolled backfilled soil layer 34, a subbase layer 33 of graded crushed stone, a base layer 32 of cement-stabilized crushed stone, and a concrete road surface layer 31;

[0046] The top layer of the elevated road surface 30 is provided with a bidirectional transverse slope with a slope ratio i of 1% to 2%. The end of the slope surface is flush with the top of the side wall 22, which is beneficial to road drainage.

[0047] The compaction degree of the plain soil layer 34 is heavy compaction 0.95.

[0048] The longitudinal length of the U-shaped groove 20 is 10m to 12m, the width of the seams between adjacent U-shaped grooves 20 is 20mm to 30mm, and the seams are filled with low-foaming high-pressure polyethylene closed-cell foam plastic boards.

[0049] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0050] In the embodiment of the present utility model, the upper embankment road raising structure limits the vertical and horizontal bidirectional sliding of the raised upper embankment road through the friction anti-skid effect between the bottom plate 21 and the road surface base bed 12 and the shear resistance of the tenon and mortise, realizes the two-dimensional constraint in the plane, and effectively ensures the overall stability of the embankment; a transverse support beam 23 is provided in the U-shaped groove 20, which limits the lateral displacement of the side walls 22 on both sides through tension constraint, thereby further improving the structural safety; an anti-collision guardrail 24 is provided on the top of the side wall 22, which ensures driving safety while intensive land use, simple construction and high reliability; the raised road surface 30 is located in the U-shaped groove 20, and the lower part is connected to the bottom plate 21 by rolling backfill with plain soil, and the upper shoulder edge is supported by the side wall 22 to reduce the slope, which can significantly reduce the newly added land occupation and alleviate the pressure of land use indicators. At the same time, it also avoids the problem of uneven settlement of the new and old embankments leading to dislocation and collapse of the slope fill and cracking of the road surface.

[0051] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A structure for raising the upper embankment road, characterized in that: The upper embankment road heightening structure comprises: a U-shaped groove (20) and a heightened road surface (30); A plurality of U-shaped grooves (20) are connected end to end and are located on the top of the original upper embankment road (10), and the elevated road surface (30) is paved in the U-shaped grooves (20); The U-shaped groove (20) comprises: a bottom plate (21), a side wall (22), a transverse support beam (23), a longitudinal tenon (25) and a transverse tenon (26); Both sides of the bottom plate (21) are provided with side walls (22) extending upwards, and the tops of the two side walls (22) are connected by a plurality of transverse support beams (23), and the transverse support beams (23) are used to restrain the side walls (22) from pulling and limiting the displacement of the wall; the bottom surface of the bottom plate (21) is provided with longitudinal tenons (25) and transverse tenons (26); A road surface base (12) on the top of the original upper embankment road (10) is provided with a mortise and tenon matching the longitudinal tenon (25) and the transverse tenon (26), and the longitudinal tenon (25) and the transverse tenon (26) are engaged with the mortise and tenon.

2. The upper embankment road raising structure according to claim 1, characterized in that: The U-shaped trough (20) is integrally cast with reinforced concrete.

3. The upper embankment road raising structure according to claim 1, characterized in that: The side slopes (11) on both sides of the original upper embankment road (10) are paved with turf for protection after clearing the foundation and surface and trimming the slope surface. The slope surface is trimmed at a slope rate not steeper than 1:

2.

4. The upper embankment road raising structure according to claim 1, characterized in that: An anti-collision guardrail (24) is provided on the top of the side wall (22).

5. The upper embankment road raising structure according to claim 1, characterized in that: The bottom plate (21) adopts a raft foundation, and the bottom plate thickness H1 is 0.4m-0.5mm.

6. The upper embankment road raising structure according to claim 1, characterized in that: The side wall (22) has a wall height H2 that gradually changes with the longitudinal slope ratio I of the upper embankment road, the longitudinal slope ratio I is 8% to 10%, and a wall thickness B2 of 0.4m to 0.5mm.

7. The upper embankment road raising structure according to claim 1, characterized in that: The wheelbase of the transverse support beam (23) is 4.5m to 5.5m, and the cross-sectional dimensions of the transverse support beam (23) in terms of width and height are 0.3m×0.5m to 0.4m×0.6m.

8. The upper embankment road raising structure according to claim 1, characterized in that: Each U-shaped groove (20) is provided with a longitudinal tenon (25) and two transverse tenons (26), the longitudinal tenon (25) is located at the central axis of the bottom plate (21), and a transverse tenon (26) is provided at each of the front and rear ends of the bottom plate (21); the cross-sectional dimensions of the longitudinal tenon (25) are 0.4m×0.6m in width×height, and the cross-sectional dimensions of the transverse tenon (26) are 0.4m×0.6m in width×height.

9. The upper embankment road raising structure according to claim 1, characterized in that: The elevated road surface (30) comprises, from bottom to top, a rolled backfill soil layer (34), a graded crushed stone subbase (33), a cement-stabilized crushed stone base (32) and a concrete road surface layer (31); The top layer of the elevated road surface (30) is provided with a bidirectional transverse slope with a slope ratio i of 1% to 2%, and the end of the slope surface is flush with the top of the side wall (22).

10. The upper embankment road raising structure according to claim 1, characterized in that: The longitudinal length of the U-shaped groove (20) is 10m-12m, the width of the slits between adjacent U-shaped grooves (20) is 20mm-30mm, and the slits are filled with low-foaming high-pressure polyethylene closed-cell foam plastic boards.

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