Hardening road transformation structure

Abstract

The utility model belongs to the technical field of highway engineering maintenance, and particularly discloses a highway hardened road transformation structure which comprises a pavement structure and a roadside guardrail structure, the pavement structure sequentially comprises a foundation, an old pavement cement stabilizing layer and an old pavement surface layer from bottom to top, and the roadside guardrail structure comprises an inner stand column and a wave plate. The old pavement surface layer is a broken old pavement surface layer, a cement fine sand stable layer is paved on the old pavement surface layer, and a concrete pavement layer is poured on the cement fine sand stable layer. Building materials can be greatly saved, the construction quality is improved, and the maintenance construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of highway engineering maintenance, in particular to a highway hardened road reconstruction structure. Background Art

[0002] Currently, the increasing development of transportation has also brought a huge workload to road maintenance, especially for rural road maintenance projects. Traditional rural road overhauls involve dismantling the roadbed and resurfacing. On the one hand, a large part of the dismantled materials is discarded, resulting in a waste of construction materials and adverse effects on environmental protection. On the other hand, the construction cost is close to that of new construction, which is relatively expensive. Therefore, in order to save materials and costs for maintenance projects, an economical and environmentally friendly rural road reconstruction and upgrading technology is urgently needed.

[0003] Traditional rural road hardening renovation and upgrading typically involves completely dismantling the pavement, recycling some or all of the discarded construction materials, and then re-paving with a cement stabilization layer and then a concrete pavement. For roads with corrugated guardrails, the corrugated panels are first removed, the columns are adjusted to the desired height, and the panels are then installed. This construction method results in numerous steps, significant material waste, and high project costs. Utility Model Content

[0004] The utility model provides a highway hardening road reconstruction structure, which aims to greatly save building materials, improve construction quality and reduce maintenance and construction costs.

[0005] The utility model is realized by the following technical scheme: a highway hardened road reconstruction structure, including a pavement structure and a roadside guardrail structure, wherein the pavement structure includes, from bottom to top, a foundation, an old pavement cement stabilization layer and an old pavement surface layer, the roadside guardrail structure includes an inner column and a corrugated plate, the old pavement surface layer is a crushed old pavement surface layer, a cement fine sand stabilization layer is laid on the old pavement surface layer, and a concrete pavement layer is poured on the cement fine sand stabilization layer.

[0006] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0007] In this plan, the old road surface is crushed and the crushed road surface is left in place for recycling without being removed or discarded. The crushed road surface is used as the stabilization layer of the new road surface. Compared with the traditional cement stabilization layer, it greatly improves the compressive strength and can greatly save building materials, improve construction quality and reduce maintenance and construction costs.

[0008] Furthermore, the cement fine sand stabilization layer is a structural layer that is evenly laid on the surface layer of the old road surface after mixing cement and sand.

[0009] Beneficial effect: In this solution, cement and fine sand are mixed and then laid on the broken old road surface for leveling. In this way, the quality of the road reconstruction can be improved during the subsequent concrete road construction, making the road strength higher.

[0010] Furthermore, the thickness of the cement fine sand stabilization layer is 1-2 cm.

[0011] Beneficial effect: With such a setting, the thickness of the cement fine sand stabilization layer in this scheme is moderate, which can not only achieve the leveling effect of the old road surface layer, but also avoid affecting the construction of the concrete road surface layer, and avoid affecting the adhesion between the concrete road surface layer and the old road surface layer due to the excessive thickness of the cement fine sand stabilization layer, thereby improving the construction quality.

[0012] Furthermore, the lower portion of the inner column is inserted into the foundation, the outer side of the inner column is sleeved with an outer column, and the corrugated plate is connected to the upper portion of the outer column.

[0013] Beneficial effects: The inner columns in this scheme are the columns set on both sides of the original highway. During the renovation process, due to the change in the height of the concrete pavement layer after the final renovation, the columns need to be lifted to a predetermined height. This scheme does not adopt the traditional method of directly lifting the columns, but adopts the method of casing construction. It is only necessary to set an outer column on the basis of the original column. The height of the outer column can be achieved by using a casing that meets the design elevation, forming an inner and outer column combination with the old column inside and the new column outside. This makes the construction method of column renovation and lifting simpler and faster.

[0014] Furthermore, the outer columns and the inner columns are connected to each other.

[0015] Beneficial effect: In this solution, the outer columns and the inner columns are further connected and fixed, so that the outer columns and the inner columns can be connected into an integrated structure, thereby improving the stability of the cooperation between the two.

[0016] Furthermore, the outer column and the inner column are both provided with mutually penetrating insertion holes, and bolts are inserted into the insertion holes of the outer column and the inner column to connect the outer column with the inner column.

[0017] Beneficial effect: In this solution, a set of sockets are opened on the outer column and the inner column, so that when the bolts are inserted between the sockets of the outer column and the inner column and the nuts are tightened later, the connection between the outer column and the inner column can be achieved. This connection method is simple and fast.

[0018] Furthermore, a bracket is connected to the upper part of the outer column and the side facing the road surface structure, and the corrugated plate is connected to the bracket.

[0019] Beneficial effect: The brackets connected to the outer columns of the concealed rod facilitate the later installation of the corrugated board.

[0020] Furthermore, a U-shaped steel bar is provided between the outer column and the concrete pavement layer. The U-shaped steel bar is sleeved on the outside of the outer column, and both ends of the U-shaped steel bar are inserted into the concrete pavement layer.

[0021] Beneficial effect: The provision of U-shaped steel bars in this solution can improve the lateral impact resistance of the outer and inner columns.

[0022] Furthermore, the end of the U-shaped steel bar is inserted into the concrete pavement layer by 20-30 cm.

[0023] Beneficial effect: This solution can ensure that the U-shaped steel bar ends are inserted into the concrete pavement layer to a sufficient depth, preventing the U-shaped steel bars from loosening and exiting, thereby ensuring that the purpose of improving the lateral impact resistance of the outer and inner columns can be achieved.

[0024] Furthermore, the U-shaped steel bar is located in the middle of the thickness of the concrete pavement layer.

[0025] Beneficial effects: This solution can ensure the stability and firmness of the connection between the U-shaped steel bar end and the concrete pavement layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0027] Figure 1 This is a structural diagram of an embodiment of a highway hardened road reconstruction structure of the utility model;

[0028] Figure 2 The utility model is a construction flow chart of a highway hardened road reconstruction structure embodiment.

[0029] Markings and corresponding parts names in the accompanying drawings:

[0030] Outer column 1, inner column 2, corrugated plate 3, bracket 301, U-shaped steel bar 4, foundation 5, old pavement cement stabilization layer 6, old pavement surface layer 7, cement fine sand stabilization layer 8, concrete pavement layer 9, bolt 10. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0032] like Figure 1As shown, this embodiment provides a highway hardened road reconstruction structure, including a pavement structure and a roadside guardrail structure. The pavement structure includes a foundation 5, an old pavement cement stabilization layer 6 and an old pavement surface layer 7 from bottom to top, and the roadside guardrail structure includes an inner column 2 and a corrugated plate 3.

[0033] In this embodiment, the old pavement surface layer 7 is a crushed old pavement surface layer, and a cement fine sand stabilization layer 8 is laid on the crushed old pavement surface layer 7. The cement fine sand stabilization layer 8 is a structural layer that is evenly laid on the old pavement surface layer 7 after mixing cement and sand. A concrete pavement layer 9 is poured on the cement fine sand stabilization layer 8.

[0034] When upgrading and renovating rural roads, the utility model crushes the old road surface, and the crushed road surface is left in situ for recycling without being cleared or discarded. The crushed road surface is used as the stabilization layer of the new road surface, which greatly improves the compressive strength compared to the traditional cement stabilization layer.

[0035] The thickness of the cement and fine sand stabilization layer 8 is 1-2 cm. In this embodiment, the thickness of the cement and fine sand stabilization layer 8 is 1 cm.

[0036] like Figure 1 As shown, in this embodiment, the lower part of the inner column 2 is inserted into the foundation 5 for fixation, the outer side of the inner column 2 is sleeved with the outer column 1, the bottom of the outer column 1 is in contact with the foundation 5, and the height of the outer column 1 adopts a steel pipe that meets the design elevation requirements, and the corrugated plate 3 is connected to the upper part of the outer column 1. Specifically: in this embodiment, a bracket 301 is connected to the upper part of the outer column 1 and facing the pavement structure, and the corrugated plate 3 and the bracket 301 are connected and fixed by bolts 10.

[0037] The outer column 1 and the inner column 2 are connected to each other. Specifically, the outer column 1 and the inner column 2 are provided with mutually penetrating sockets. Bolts 10 are inserted into the sockets of the outer column 1 and the inner column 2 and are tightened and fixed with nuts to connect the outer column 1 and the inner column 2.

[0038] A U-shaped steel bar 4 is provided between the outer column 1 and the concrete pavement layer 9. The U-shaped steel bar 4 is sleeved on the outside of the outer column 1, and both ends of the U-shaped steel bar 4 are inserted into the concrete pavement layer 9. In this embodiment, the end of the U-shaped steel bar 4 is inserted into the concrete pavement layer 9 by 20-30 cm, and the U-shaped steel bar 4 is located in the middle of the thickness of the concrete pavement layer 9, thereby achieving the purpose of anchoring the outer column 1 and the inner column 2 to the side of the pavement, which can effectively improve the lateral impact resistance of the outer column 1 and the inner column 2.

[0039] The roadside guardrail structure and the corresponding traffic sign in the present invention do not adopt the traditional method of directly lifting the column, but adopt the sleeve construction method, that is: during construction, a steel pipe of equal strength with an inner diameter slightly larger than the original column (the inner column 2 in this embodiment) is sleeved on the column, and the height of the outer column 1 is a steel pipe that meets the design elevation, forming an inner and outer column 1 with the old column inside and the new column outside.

[0040] The specific implementation process is as follows:

[0041] Combine Figure 2 As shown, the construction steps of the utility model are as follows:

[0042] Step 1: crushing the old road surface layer 7 that needs to be upgraded;

[0043] Step 2: Paving a cement and fine sand stabilization layer 8 with an average thickness of 1 cm on the crushed old road surface layer 7 to level the recycled old road surface;

[0044] Step 3: Remove the corrugated guardrail and the corrugated plate 3 or the traffic sign;

[0045] Step 4: Install the new column. Put the outer column 1 on the inner column 2. Drill holes in the middle and upper parts of the inner column 2 and the outer column 1 and install bolts 10 to fix the inner column 2 and the outer column 1 together.

[0046] Step 5: Install the pavement concrete formwork and pour the concrete pavement layer 9;

[0047] Step 6: Install U-shaped steel bars 4 on the outer column 1. The height of the U-shaped steel bars 4 is controlled to be in the middle of the thickness of the concrete pavement layer 9, and the length thereof is 20 cm extending into the concrete pavement layer 9.

[0048] Step 7: After the concrete reaches the designed strength, remove the concrete formwork.

[0049] In actual construction, the order of step five and step six can also be reversed, that is, the U-shaped steel bars 4 are installed first, and then concrete is poured to integrate the U-shaped steel bars 4 with the concrete pavement layer 9 after the concrete is solidified.

[0050] The utility model provides a new construction method and structure for upgrading and upgrading rural highway hardened roads, achieving "zero waste" and "zero slag" of old road construction materials. Furthermore, due to the use of standardized construction materials and construction processes, construction quality is more easily controlled, and corrugated guardrails and the like can be elevated to a predetermined height at low cost and high speed. This also provides a useful solution to the problem of "focusing on road maintenance and neglecting corrugated guardrail adjustment" on rural roads. The application of this utility model can solve the problems of low construction quality, large material waste, and the inability to lift corrugated guardrails into place during the upgrading, reconstruction, and widening of rural roads, making a beneficial contribution to saving resources, protecting the environment, and comprehensively improving the safety and protection capabilities of rural roads.

[0051] It should be noted that the above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

[0052] In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0053] In the description of this document, the terms "up", "down", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only used to illustrate the relative position relationship between the various components or components, and do not particularly limit the specific installation orientation of the various components or components.

[0054] In the descriptions of this document, some terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0055] In this document, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0056] The structures, proportions, sizes, etc. drawn in the drawings in this application are only used to match the contents disclosed in this technical briefing document for those skilled in the art to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0057] The terms used in this document are those commonly used in the art currently in consideration of the functions of the present disclosure, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present disclosure. Therefore, the terms used in the document should not be understood as simple names, but rather as a general description based on the meaning of the terms and the present disclosure.

[0058] Flowcharts or text are used in this document to illustrate the operational steps performed according to the embodiments of the present application. It should be understood that the operational steps in the embodiments of the present application are not necessarily performed in the exact order in which they are described. Instead, the various steps may be processed in reverse order or simultaneously, as needed. Furthermore, other operations may be added to these processes, or one or more operations may be removed from these processes.

[0059] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A highway hardened road reconstruction structure, comprising a pavement structure and a roadside guardrail structure, wherein the pavement structure comprises, from bottom to top, a foundation, an old pavement cement stabilization layer, and an old pavement surface layer, and the roadside guardrail structure comprises an inner column and a corrugated plate, characterized in that: The old road surface layer is a crushed old road surface layer, a cement fine sand stabilization layer is laid on the old road surface layer, and a concrete road surface layer is poured on the cement fine sand stabilization layer; the lower part of the inner column is inserted into the foundation, and the outer side of the inner column is provided with an outer column, the outer column and the inner column are connected to each other, and the corrugated plate is connected to the upper part of the outer column.

2. A highway hardened road reconstruction structure according to claim 1, characterized in that: The cement fine sand stabilization layer is a structural layer that is evenly laid on the surface layer of the old road surface after cement and sand are mixed.

3. A highway hardened road reconstruction structure according to claim 1, characterized in that: The thickness of the cement fine sand stabilization layer is 1-2 cm.

4. A highway hardened road reconstruction structure according to claim 1, characterized in that: The outer columns and the inner columns are connected to each other.

5. A highway hardened road reconstruction structure according to claim 4, characterized in that: The outer column and the inner column are both provided with mutually penetrating insertion holes, and bolts are inserted into the insertion holes of the outer column and the inner column to connect the outer column with the inner column.

6. A highway hardened road reconstruction structure according to claim 1, characterized in that: A bracket is connected to the upper part of the outer column and the side facing the road surface structure, and the corrugated plate is connected to the bracket.

7. The highway hardened road reconstruction structure according to claim 1, characterized in that: A U-shaped steel bar is provided between the outer column and the concrete pavement layer. The U-shaped steel bar is sleeved on the outside of the outer column, and both ends of the U-shaped steel bar are inserted into the concrete pavement layer.

8. A highway hardened road reconstruction structure according to claim 7, characterized in that: The end of the U-shaped steel bar is inserted into the concrete pavement layer by 20-30 cm.

9. A highway hardened road reconstruction structure according to claim 7, characterized in that: The U-shaped steel bars are located in the middle of the thickness of the concrete pavement layer.

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