Roadbed sinking prevention device for old road reconstruction and extension

Abstract

A roadbed sinking preventing device for old road reconstruction and extension comprises a base, a plurality of connecting rods and a plurality of connecting rods, the positioning nail penetrates through the base; the positioning plate is arranged in the mounting groove, and the positioning nail penetrates through the positioning plate; the springback mechanism is arranged at the top of the positioning nail, the springback mechanism comprises a bearing plate, and the bearing plate is arranged at the top of the mounting groove; the bottom of the elevation column is arranged at one end of the positioning plate, and a first connecting plate is arranged on the elevation column. According to the device, a soil layer is jacked back through the bearing plate, the bearing capacity of backfill soil is enhanced through the steel bars between the first connecting plates, and the construction process is standardized through the elevation columns, so that the bearing capacity is enhanced under the condition that the roadbed reaches the design standard, and the effect of preventing sinking is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of old road reconstruction, and more specifically, to a device for preventing roadbed sinking during old road reconstruction and expansion. Background Art

[0002] When an old road is renovated or expanded, the original road needs to be demolished and then rebuilt or widened.

[0003] The main reason for road settlement after construction is the poor bearing capacity of the soil layer. The reason why the bearing capacity cannot meet the design standard is most likely that the thickness of the single laying is too large when the foundation is laid in layers, and the density cannot meet the standard during compaction, and natural settlement will occur after a long time. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the utility model aims to provide a device for preventing roadbed sinking during reconstruction and expansion of old roads, which can control the paving thickness and enhance the soil bearing capacity.

[0005] A device for preventing roadbed sinking during the reconstruction and expansion of old roads comprises: a base, a plurality of mounting grooves being provided on the top of the base; positioning pins, the positioning pins passing through the base; a positioning plate, the positioning plate being provided in the mounting grooves, the positioning pins passing through the positioning plate; a rebound mechanism, the rebound mechanism being provided on the top of the positioning pins, the rebound mechanism comprising a pressure plate, the pressure plate being provided on the top of the mounting grooves; an elevation column, the bottom of the elevation column being provided at one end of the positioning plate, the elevation column being provided with a first connecting plate.

[0006] Furthermore, second connecting plates are provided on both side walls of the base, and adjacent second connecting plates are connected with steel bars.

[0007] Furthermore, a thread is provided at the bottom of the positioning nail, and a nail head is provided at the top of the positioning nail, and the diameter of the nail head is larger than the diameter of the bottom of the positioning nail.

[0008] Furthermore, an annular recess is provided in the middle of the nail head.

[0009] Furthermore, the positioning plate is a rectangular steel plate, and connecting holes are provided at both ends of the positioning plate. The positioning nail passes through one of the connecting holes, and the other connecting hole is connected to the elevation column.

[0010] Furthermore, one end of the positioning plate connected to the elevation column is cantilevered from the installation groove.

[0011] Furthermore, the rebound mechanism also includes a positioning cover and a positioning spring, the bottom of the positioning cover is slidably connected to the annular recess, the top of the positioning cover is connected to the bottom of the pressure plate, the positioning spring is arranged in the positioning cover, and the positioning spring connects the nail head and the pressure plate.

[0012] Furthermore, the pressure plate is perpendicular to the extension direction of the mounting groove.

[0013] Furthermore, a positioning hole is provided at the top of the elevation column, and a positioning column is provided at the bottom of the elevation column, and the positioning column can be inserted into the positioning hole.

[0014] Furthermore, the top surface of the first connecting plate is flush with the top surface of the elevation column, and the surfaces of adjacent first connecting plates are connected with steel bars.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] ① This device uses the bearing plate to return the top soil layer, the steel bars between the first connecting plates to enhance the bearing capacity of the backfill soil, and the elevation columns to standardize the construction process, so that the bearing capacity of the roadbed is enhanced while meeting the design standards, achieving the effect of preventing sinking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 The present invention is a schematic diagram of the overall structure of a device for preventing roadbed sinking during reconstruction and expansion of old roads.

[0019] Figure 2 This is an exploded view of a device for preventing roadbed sinking during reconstruction and expansion of old roads.

[0020] In the figure: 1. Base; 11. Mounting groove; 12. Second connecting plate; 2. Positioning pin; 21. Nail head; 22. Annular depression; 3. Positioning plate; 31. Connecting hole; 4. Rebound mechanism; 41. Pressure plate; 42. Positioning cover; 43. Positioning spring; 5. Elevation column; 51. First connecting plate; 52. Positioning hole; 53. Positioning column. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0022] like Figure 1 、 Figure 2As shown, a device for preventing roadbed sinking during the reconstruction and expansion of old roads includes: a base 1, a plurality of mounting grooves 11 are provided on the top of the base 1; positioning nails 2, the positioning nails 2 pass through the base 1; a positioning plate 3, the positioning plate 3 is provided in the mounting grooves 11, and the positioning nails 2 pass through the positioning plate 3; a rebound mechanism 4, the rebound mechanism 4 is provided on the top of the positioning nail 2, the rebound mechanism 4 includes a pressure plate 41, and the pressure plate 41 is provided on the top of the mounting groove 11; an elevation column 5, the bottom of the elevation column 5 is provided at one end of the positioning plate 3, and a first connecting plate 51 is provided on the elevation column 5.

[0023] Second connecting plates 12 are provided on both side walls of the base 1, with rebar connected to adjacent second connecting plates 12. Before installing the base 1, the original foundation surface is leveled and compacted. The base 1 is then laid on the original foundation, with spacing between adjacent bases 1 to ensure tight contact and installation. After the base 1 is laid, compaction equipment is used to tamp the base 1 downward, pressing the bottom of the base 1 against the original roadbed and verifying its compactness. After the base 1 is positioned, rebar is welded to the second connecting plates 12. The rebar connects the adjacent bases 1 into a single entity, enhancing the base 1's bearing capacity.

[0024] After installing the base 1, lay the positioning nails 2. The bottom of the positioning nails 2 is provided with threads. When in use, the positioning nails 2 are screwed through the installation slots 11 into the original foundation. The threads increase the contact area between the positioning nails 2 and the original foundation, making the base 1 more stable. The top of the positioning nail 2 is provided with a nail head 21. The diameter of the nail head 21 is larger than the diameter of the bottom of the positioning nail 2. The nail head 21 prevents the positioning nail 2 from being separated from the base 1. The nail head 21 also presses the positioning plate 3 and the base 1 together.

[0025] An annular recess 22 is provided in the middle of the nail head 21 . The annular recess 22 does not extend into the nail body, and the annular recess 22 does not affect the strength of the nail body.

[0026] The positioning plate 3 is a rectangular steel plate with connection holes 31 defined at each end. A positioning nail 2 passes through one of the connection holes 31. The positioning plate 3 is positioned between the bottom surface of the mounting groove 11 and the bottom surface of the nail head 21. The nail head 21 and the mounting groove 11 clamp the positioning plate 3, securing it within the mounting groove 11. The other end of the positioning plate 3 protrudes from the mounting groove 11, allowing the other connection hole 31 to connect to the elevation column 5. Two positioning plates 3 are installed in each mounting groove 11, both protruding from the groove 11. The edge of the positioning plate 3 closest to the roadside coincides with the edge of the newly constructed roadbed.

[0027] One end of the positioning plate 3 connected to the elevation column 5 is cantilevered from the mounting groove 11. The bottom of the lowest elevation column 5 passes through the positioning plate 3, and the bottom surface of the lowest elevation column 5 is in contact with the roadbed surface. The positioning plate 3 restricts the movement of the elevation columns 5. The positioning plate 3 allows the elevation columns 5 to be arranged in a straight line in sequence. The elevation columns 5 will not move during backfilling. At the same time, the elevation columns 5 can control the edge of the backfill, making it easier to trim the side of the roadbed after backfilling.

[0028] The rebound mechanism 4 also includes a positioning cover 42 and a positioning spring 43. The bottom of the positioning cover 42 is slidably connected to the annular recess 22, and the top of the positioning cover 42 is connected to the bottom of the pressure plate 41. The positioning spring 43 is disposed in the positioning cover 42, and the positioning spring 43 connects the nail head 21 and the pressure plate 41. Under normal conditions, the positioning spring 43 supports the pressure plate 41 from contact with the top surface of the mounting groove 11, while also causing the bottom of the positioning cover 42 to be separated from the bottom of the annular recess 22. The pressure plate 41 extends perpendicular to the mounting groove 11. After the rebound mechanism 4 is installed, a layer of backfill soil is laid on top of the pressure plate 41 as a roadbed. After the backfill soil is compacted, the pressure plate 41 moves downward, causing the positioning spring 43 to be in a contracted state. The positioning spring 43 provides an upward force to the pressure plate 41, reducing the possibility of the roadbed subsidence.

[0029] The top of the elevation column 5 is provided with a positioning hole 52, and the bottom of the elevation column 5 is provided with a positioning column 53, which can be inserted into the positioning hole 52. The top surface of the first connecting plate 51 is flush with the top surface of the elevation column 5, and the surfaces of adjacent first connecting plates 51 are connected with steel bars. When in use, first connect the lowest level column 5 with the positioning plate 3. The first connecting plate 51 on the lowest level column 5 is the height of the first layer of backfill soil. The backfill soil is laid above the base 1. When the backfill soil is compacted, the surface of the backfill soil needs to be lower than the top surface of the first connecting plate 51. Then, steel bars are welded on the adjacent first connecting plate 51, and the positioning columns 53 of the second section level column 5 are inserted into the positioning holes 52 of the top level column 5 to complete the installation of the second section level column 5. Then, the second layer of backfill soil is laid and compacted. The level column 5 assists in the normal layered backfilling and controls the height of the backfill layer, which is convenient for management personnel to inspect and accept the layered backfill soil. The height of a single backfill cannot exceed the level column 5, otherwise the next layer of level column 5 cannot be installed, which standardizes the construction sequence. The steel bars connected on the first connecting plate 51 increase the bearing capacity of the soil layer and also reduce the subsidence of the roadbed.

[0030] This device uses the pressure plate 41 to return the soil layer, the steel bars between the first connecting plates 51 to enhance the bearing capacity of the backfill soil, and the elevation column 5 to standardize the construction process, so that the bearing capacity of the roadbed is enhanced while meeting the design standards, achieving the effect of preventing sinking.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A device for preventing roadbed sinking during old road reconstruction and expansion, characterized in that: include: A base (1), wherein a top of the base (1) is provided with a plurality of mounting grooves (11); A positioning pin (2), wherein the positioning pin (2) passes through the base (1); A positioning plate (3), the positioning plate (3) being arranged in the mounting groove (11), and the positioning pin (2) passing through the positioning plate (3); A rebound mechanism (4), the rebound mechanism (4) being arranged on the top of the positioning pin (2), the rebound mechanism (4) comprising a pressure-bearing plate (41), the pressure-bearing plate (41) being arranged on the top of the mounting groove (11); An elevation column (5), the bottom of the elevation column (5) is arranged at one end of the positioning plate (3), and a first connecting plate (51) is provided on the elevation column (5).

2. The device for preventing roadbed subsidence during reconstruction and expansion of an old road according to claim 1, characterized in that: Second connecting plates (12) are provided on both side walls of the base (1), and adjacent second connecting plates (12) are connected with steel bars.

3. The device for preventing roadbed subsidence during reconstruction and expansion of an old road according to claim 2, characterized in that: The bottom of the positioning nail (2) is provided with a thread, and the top of the positioning nail (2) is provided with a nail head (21), and the diameter of the nail head (21) is larger than the diameter of the bottom of the positioning nail (2).

4. The device for preventing roadbed subsidence during reconstruction and expansion of an old road according to claim 3, characterized in that: An annular recess (22) is provided in the middle of the nail head (21).

5. The device for preventing roadbed subsidence during reconstruction and expansion of an old road according to claim 4, characterized in that: The positioning plate (3) is a rectangular steel plate. Both ends of the positioning plate (3) are provided with connection holes (31). The positioning nail (2) passes through one of the connection holes (31), and the other connection hole (31) is connected to the elevation column (5).

6. The device for preventing roadbed subsidence during reconstruction and expansion of an old road according to claim 5, characterized in that: One end of the positioning plate (3) connected to the elevation column (5) is cantilevered over the installation groove (11).

7. The device for preventing roadbed subsidence during reconstruction and expansion of an old road according to claim 6, characterized in that: The rebound mechanism (4) further comprises a positioning cover (42) and a positioning spring (43), wherein the bottom of the positioning cover (42) is slidably connected to the annular recess (22), the top of the positioning cover (42) is connected to the bottom of the pressure plate (41), the positioning spring (43) is arranged in the positioning cover (42), and the positioning spring (43) connects the nail head (21) and the pressure plate (41).

8. The device for preventing roadbed subsidence during reconstruction and expansion of an old road according to claim 7, characterized in that: The pressure-bearing plate (41) is perpendicular to the extending direction of the mounting groove (11).

9. The device for preventing roadbed subsidence during reconstruction and expansion of an old road according to claim 8, characterized in that: The top of the elevation column (5) is provided with a positioning hole (52), and the bottom of the elevation column (5) is provided with a positioning column (53), and the positioning column (53) can be inserted into the positioning hole (52).

10. The device for preventing roadbed subsidence during reconstruction and expansion of an old road according to claim 9, characterized in that: The top surface of the first connecting plate (51) is flush with the top surface of the elevation column (5), and the surfaces of the adjacent first connecting plates (51) are connected with steel bars.

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