Highway medial strip guardrail heightening structure

Abstract

The utility model relates to the technical field of highway guardrail heightening, and discloses an expressway medial strip guardrail heightening structure which comprises symmetrical guardrail bodies embedded in a roadbed and further comprises a guardrail heightening cover plate, and clamping tables are arranged on the two sides of the guardrail heightening cover plate. The lower portion of the guardrail heightening cover plate is clamped between the two guardrail bodies through the clamping table, a plurality of symmetrical reserved holes are reserved in the guardrail heightening cover plate, and a plurality of embedded steel bars are arranged at the upper ends of the guardrail bodies. The guardrail heightening cover plate is arranged, the guardrail heightening cover plate is directly clamped between the two guardrail bodies through the reserved holes and the clamping tables arranged on the guardrail heightening cover plate, the embedded steel bars penetrate through the reserved holes, and the embedded steel bars and the guardrail heightening cover plate are connected through the connecting units. The guardrail bodies on the two sides of the highway medial strip can be heightened by installing one guardrail heightening cover plate, the heightening efficiency of the guardrail bodies of the highway medial strip is improved, and meanwhile the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of highway guardrail heightening, in particular to a guardrail heightening structure for a central dividing strip of an expressway. Background Art

[0002] There is a central median on all highways, with concrete crash barriers on both sides of the central median. During operation, the road surface has been repaired many times due to road subsidence and other problems. After the repair, the road surface was raised, causing the relative height of the road surface and the central median crash barrier to fail to meet the requirements of the current highway traffic safety facility specifications. Therefore, the central median guardrail needs to be raised.

[0003] In order to improve the efficiency of heightening and renovating highway guardrails, the prior art has made many improvements to highway guardrail heightening structures. For example, patent publication number CN216712849U discloses a highway concrete guardrail heightening and reinforcement structure, which includes a drilled hole connecting the guardrail, the guardrail foundation and the shoulder, a hollow steel pipe is provided in the drilled hole, a precast concrete heightening member is provided at the upper end of the guardrail, a reserved hole is provided on the precast concrete heightening member, and a grouting hole is provided on the precast concrete heightening member, the grouting hole is connected to the reserved hole, a mud filling layer is provided in the gap between the drilled hole and the hollow steel pipe and in the hollow steel pipe, and a side connecting structure is provided between the guardrail and the precast concrete heightening member; the utility model can heighten and reinforce the old concrete guardrail at the same time, and at the same time, it is easy to operate and saves renovation time.

[0004] The above patents have obvious beneficial effects, but still have the following deficiencies in actual operation:

[0005] In the above-mentioned comparative documents, reserved holes are reserved on the concrete guardrail. When the concrete guardrail needs to be raised later, the hollow steel pipe is inserted into the reserved hole, and the precast concrete raising part is inserted into the upper end of the hollow steel pipe to limit the position, and the precast concrete raising part is fixed by anchor bolts. The main stress point of the precast concrete raising part is the hollow steel pipe. However, in reality, many highway central isolation belt concrete guardrails do not have reserved holes, which causes inconvenience in the construction of existing concrete guardrails. In addition, concrete guardrails are provided on both sides of the central isolation belt. If they are fixed by anchor bolts, the construction workload is large, which increases the cost of raising the existing central isolation belt concrete guardrail. Therefore, this field urgently needs to improve the highway central isolation belt guardrail raising structure to solve the defects of the existing technology. Utility Model Content

[0006] In response to the shortcomings of the existing technology, the utility model provides a highway central median guardrail heightening structure. By installing a guardrail heightening cover plate, the guardrail bodies on both sides of the highway central median can be heightened, thereby improving the heightening efficiency of the highway central median guardrail body and reducing construction costs.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a structure for raising guardrails in the central dividing strip of a highway, comprising a guardrail body buried in a roadbed and symmetrical, and a guardrail raising cover plate, wherein clamping platforms are provided on both sides of the guardrail raising cover plate, and the lower part of the guardrail raising cover plate is clamped between the two guardrail bodies through the clamping platforms, and a plurality of symmetrical reserved holes are reserved on the guardrail raising cover plate, and a plurality of embedded steel bars are provided on the upper end of the guardrail body, and the embedded steel bars pass through the reserved holes, and a connecting unit is provided between the guardrail raising cover plate and the embedded steel bars, and the connecting unit is used for connecting and fixing the embedded steel bars and the guardrail raising cover plate.

[0008] Preferably, the connecting unit includes several connecting frames arranged on the side of the guardrail raising cover plate, and the side of the guardrail raising cover plate is provided with a snap-in groove adapted to the connecting frame. The cavity in the snap-in groove is L-shaped, and the embedded steel bar passes through one side of the connecting frame and extends beyond the side of the connecting frame. The end of the embedded steel bar extending beyond the side of the connecting frame is threadedly connected to a limiting ring.

[0009] Preferably, a weight-reducing groove is provided on the lower surface of the guardrail heightening cover plate, and the weight-reducing groove is located between the two guardrail bodies.

[0010] Preferably, a water collecting trough is provided on the upper surface of the guardrail heightening cover plate, and a water drainage hole is provided on the bottom of the water collecting trough.

[0011] Preferably, a guide angle is provided on the side of the clamping platform that contacts the two facing guardrails.

[0012] Preferably, the inner diameter of the reserved hole is larger than the maximum outer diameter of the embedded rebar.

[0013] Preferably, both sides of the guardrail heightening cover are flush with the back sides of the two guardrail bodies.

[0014] In view of the shortcomings of the existing technology, the present invention provides a highway central median guardrail heightening structure, which overcomes the shortcomings of the existing technology. The beneficial effects of the present invention are:

[0015] 1. In the present invention, a guardrail raising cover plate is provided, and the guardrail raising cover plate is directly clamped between two guardrail bodies through the reserved holes and the clamping platform provided on the guardrail raising cover plate. The anchor bars pass through the reserved holes, and the anchor bars are connected to the guardrail raising cover plate through the connecting unit. The installation of one guardrail raising cover plate can raise the guardrail bodies on both sides of the central dividing strip of the highway, thereby improving the heightening efficiency of the guardrail bodies of the central dividing strip of the highway and reducing the construction cost at the same time.

[0016] 2. In the present invention, a connecting frame is provided, which is connected to the card slot, and the anchor bar runs through one side of the connecting frame. The anchor bar and the connecting frame are fixed by a limiting ring, which is convenient for disassembly when maintenance is required later.

[0017] 3. In the present invention, by setting a weight-reducing trough and a water collecting trough, the weight of the guardrail heightening cover and the amount of manufacturing materials can be reduced by setting the weight-reducing trough, and the rainwater can be guided into the roadbed by setting the water collecting trough and the drainage hole to prevent a large amount of water from accumulating on the highway surface.

[0018] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 to the present invention.

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model after overall installation;

[0021] Figure 2 This is a schematic structural diagram of a partial cross-section of the guardrail body and other parts of the present invention;

[0022] Figure 3 This is a schematic structural diagram of a partial cross-section of the guardrail heightening cover plate and other parts of the present invention;

[0023] Figure 4 for Figure 2 A in the middle is an enlarged structural diagram;

[0024] Figure 5 for Figure 3 The enlarged structural diagram at B in the middle;

[0025] Figure 6 for Figure 3 Enlarged structural diagram at point C in the middle.

[0026] In the figure: 1. Guardrail body; 2. Roadbed; 3. Guardrail heightening cover; 4. Reserved holes; 5. Planting bars; 6. Clamping grooves; 7. Connecting frame; 8. Limiting ring; 9. Weight reduction groove; 10. Water collecting trough; 11. Drain hole; 12. Guide angle; 13. Clamping platform. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Example 1

[0029] See also Figures 1-6 A highway central dividing strip guardrail raising structure includes a guardrail body 1 buried symmetrically on the roadbed 2, and also includes a guardrail raising cover plate 3. A clamping platform 13 is provided on both sides of the guardrail raising cover plate 3. The lower part of the guardrail raising cover plate 3 is clamped between the two guardrail bodies 1 through the clamping platform 13. A plurality of symmetrical reserved holes 4 are reserved on the guardrail raising cover plate 3. A plurality of embedded steel bars 5 are provided at the upper end of the guardrail body 1. The embedded steel bars 5 pass through the reserved holes 4. A connecting unit is provided between the guardrail raising cover plate 3 and the embedded steel bars 5. The connecting unit is used to connect and fix the embedded steel bars 5 and the guardrail raising cover plate 3.

[0030] The specific implementation method in this embodiment is as follows: first, the spacing between the original guardrail bodies 1 is measured, and the guardrail heightening cover plates 3 are centrally produced by prefabricating concrete. The operator installs the embedded steel bars 5 on the guardrail body 1 through the existing technical method. The concrete guardrail heightening cover plates 3 are reserved with reserved holes 4 according to the position of the embedded steel bars 5 during production. During installation, the guardrail heightening cover plates 3 are lifted between the two guardrail bodies 1 using lifting equipment, and are clamped between the two guardrail bodies 1 through two clamping platforms 13, and the embedded steel bars 5 and the guardrail heightening cover plates 3 are connected through the connecting unit. One installation can raise the guardrail bodies 1 on both sides of the highway dividing strip, thereby improving the efficiency of raising the guardrail bodies 1 on the highway dividing strip, and reducing the cost of raising the guardrail bodies 1.

[0031] It is worth noting that the above-mentioned construction process of the rebar 5 is an existing known technology, and the steps are: positioning the position of the rebar 5, drilling, cleaning the drilled holes, injecting glue and inserting the rebar 5. Since it is a mature existing known technology, no further details will be given here.

[0032] Example 2

[0033] See also Figure 4 、 Figure 5 and Figure 6This embodiment includes the above-mentioned embodiment, wherein the connection unit includes a plurality of connection frames 7 provided on the side of the guardrail heightening cover plate 3, and a snap-in groove 6 adapted to the connection frame 7 is opened on the side of the guardrail heightening cover plate 3. The cavity in the snap-in groove 6 is L-shaped, and the anchor bar 5 passes through one side of the connection frame 7 and extends beyond the side of the connection frame 7. One end of the anchor bar 5 extending beyond the side of the connection frame 7 is threadedly connected to a limiting ring 8.

[0034] Specific implementation method in this embodiment: After several guardrail heightening cover plates 3 are installed, they are clamped in the clamping groove 6 through the connecting frame 7, and a through hole with a diameter larger than the diameter of the anchor bar 5 is opened on one side of the connecting frame 7, and one side of the connecting frame 7 is sleeved on the side of the anchor bar 5 through the through hole, and a thread is opened on the upper end side of the anchor bar 5, and the limiting ring 8 is threadedly connected to the upper end of the anchor bar 5, and the limiting ring 8 is tightened to compress the guardrail heightening cover plate 3. At the same time, the clamping groove 6 can also be used to lift the guardrail heightening cover plate 3. A lifting device compatible with several clamping grooves 6 is made, and the guardrail heightening cover plate 3 can be quickly lifted using the clamping groove 6.

[0035] It is worth noting that the above-mentioned connection method is a detachable connection method, which is more convenient for maintenance in the later stage. Of course, the connection method is not limited to this one. For example, by pre-embedding a metal corrugated pipe in the reserved hole 4, after several guardrail heightening cover plates 3 are placed, fine gravel concrete is poured into the metal corrugated pipe, and the connection between the embedded reinforcement 5 and the guardrail heightening cover plate 3 can also be achieved.

[0036] Example 3

[0037] See also Figures 1-6 This embodiment includes all the above embodiments, which further includes: a weight-reducing groove 9 is provided on the lower surface of the guardrail heightening cover 3, and the weight-reducing groove 9 is located between the two guardrail bodies 1; a water collecting groove 10 is provided on the upper surface of the guardrail heightening cover 3, and a water hole 11 is provided at the bottom of the water collecting groove 10; a guide bevel 12 is provided on the side of the clamping platform 13 that contacts the opposite side of the two guardrails; the inner hole diameter of the reserved hole 4 is larger than the maximum outer diameter of the embedded steel bar 5; and both sides of the guardrail heightening cover 3 are flush with the back sides of the two guardrail bodies 1.

[0038] Specific implementation method in this embodiment: the reservation of the weight-reducing groove 9 reduces the overall weight of the guardrail heightening cover 3, and saves manufacturing materials. When encountering heavy rain weather, rainwater will be concentrated in the sump 10 and flow into the two guardrail bodies 1 through the drainage holes 11 to flow into the roadbed 2 for drainage, preventing a large amount of rainwater from flowing onto the highway surface. The guide bevel 12 has a guiding function, which is convenient for the installer to clamp the connecting platform 13 between the two guardrail bodies 1. At the same time, through the function of the guide bevel 12, the connecting platform 13 can be clamped between two guardrail bodies 1 with different spacings. This spacing range should not exceed the angle of the guide bevel 12. By setting the reserved hole 4 larger than the anchor bar 5, when the anchor bar 5 produces a deviation in the first range during construction, it can also be installed between the reserved hole 4 and the anchor bar 5. After installation, the two sides of the guardrail heightening cover 3 are flush with the vertical surfaces opposite to the two guardrail bodies 1, thereby improving the aesthetics after the modification.

[0039] 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 highway central median guardrail heightening structure, comprising a symmetrical guardrail body (1) buried on a roadbed (2), characterized in that: The utility model also includes a guardrail heightening cover plate (3), wherein clamping platforms (13) are provided on both sides of the guardrail heightening cover plate (3), and the lower part of the guardrail heightening cover plate (3) is clamped between the two guardrail bodies (1) through the clamping platforms (13); a plurality of symmetrical reserved holes (4) are reserved on the guardrail heightening cover plate (3); a plurality of embedded steel bars (5) are provided on the upper end of the guardrail body (1), and the embedded steel bars (5) pass through the reserved holes (4); a connecting unit is provided between the guardrail heightening cover plate (3) and the embedded steel bars (5), and the connecting unit is used for connecting and fixing the embedded steel bars (5) and the guardrail heightening cover plate (3).

2. The highway central median guardrail heightening structure according to claim 1, characterized in that: The connection unit comprises a plurality of connection frames (7) provided on the side of the guardrail heightening cover plate (3); a clamping groove (6) adapted to the connection frame (7) is provided on the side of the guardrail heightening cover plate (3); the cavity in the clamping groove (6) is L-shaped; the anchor bar (5) passes through one side of the connection frame (7) and extends beyond the side of the connection frame (7); and one end of the anchor bar (5) extending beyond the side of the connection frame (7) is threadedly connected to a limiting ring (8).

3. The highway central median guardrail heightening structure according to claim 1, characterized in that: A weight-reducing groove (9) is provided on the lower surface of the guardrail heightening cover plate (3), and the weight-reducing groove (9) is located between the two guardrail bodies (1).

4. The highway central dividing strip guardrail heightening structure according to claim 1, characterized in that: A water collecting trough (10) is provided on the upper surface of the guardrail heightening cover plate (3), and a water discharge hole (11) is provided at the bottom of the water collecting trough (10).

5. The highway central dividing strip guardrail heightening structure according to claim 1, characterized in that: A guide bevel (12) is provided on the side of the clamping platform (13) that contacts the two guardrails.

6. The highway central median guardrail heightening structure according to claim 1, characterized in that: The inner diameter of the reserved hole (4) is larger than the outer maximum diameter of the embedded reinforcement (5).

7. The highway central median guardrail heightening structure according to claim 1, characterized in that: Both sides of the guardrail heightening cover plate (3) are flush with the back sides of the two guardrail bodies (1).

Images