Highway roadbed with waterproof settlement function

Abstract

The highway subgrade comprises a subgrade main body, a soil base layer is arranged at the bottom of a road shoulder main body, a pavement layer is arranged at the top of the road shoulder main body, and the subgrade main body comprises a first subgrade filling layer, a concrete reinforcing layer and a second subgrade filling layer which are sequentially arranged from bottom to top. The roadbed structure is simple in structure, high in construction convenience, short in period and low in construction cost, it can be guaranteed that the roadbed body has high stability and bearing capacity and good waterproof and drainage performance, settlement of the roadbed structure is avoided, the service life of the roadbed is prolonged, and the roadbed structure has good practicability and popularization prospects.

Description

Technical Field

[0001] This utility model relates to a roadbed with waterproof settlement, belonging to the field of roadbed technology. Background Technology

[0002] A roadbed is a strip-shaped structure built according to the route location and certain technical requirements, serving as the foundation for the pavement. It is a linear structure constructed of earth or stone. It bears the weight of its own soil and rock, the weight of the pavement, and the traffic loads transmitted from the pavement, making it a crucial component of the entire highway structure. Whether filled or excavated, the materials used to construct the roadbed are primarily loose materials such as earth and stone. Therefore, the roadbed is a geotechnical structure, and its drainage structure is essential for reducing roadbed erosion and damage, and ensuring its strength, stability, and durability.

[0003] For example, patent document CN 107476157 A provides a roadbed structure and a highway roadbed structure. This roadbed structure includes a main roadbed body and a three-dimensional drainage system. The three-dimensional drainage system includes multiple horizontal drainage layers, multiple vertical drainage channels intersecting the horizontal drainage layers, and a slope drainage layer. The main roadbed body is divided into multiple sections of roadbed fill by the horizontal drainage layers and the vertical drainage channels. The slope drainage layer is located on both sides of the main roadbed body and is connected to the horizontal drainage layers. An anti-corrosion layer is provided on the side of the horizontal drainage layer and the slope drainage layer away from the roadbed fill. This roadbed structure and highway roadbed structure can improve corrosion resistance, but its structure is complex, construction costs are high, and the division of the main roadbed body into multiple sections of roadbed fill by the horizontal drainage layers and vertical drainage channels results in insufficient roadbed strength and stability. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a roadbed with waterproof settlement, which can overcome the shortcomings of the prior art.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A roadbed with waterproof settlement includes a roadbed body, a shoulder body with a soil base at the bottom and a pavement layer at the top, and the roadbed body includes a first roadbed fill layer, a concrete reinforcement layer and a second roadbed fill layer arranged sequentially from bottom to top.

[0007] Furthermore, the concrete reinforcement layer is a plain concrete or reinforced concrete arched structure.

[0008] Furthermore, the arch shape is formed by casting in place or by splicing precast concrete blocks.

[0009] Furthermore, a waterproof layer is provided on the outside of both the first roadbed fill layer and the concrete reinforcement layer.

[0010] Furthermore, a water filter layer is provided on both sides of the second roadbed fill layer.

[0011] Furthermore, it also includes several grouting anchors that penetrate the first roadbed fill layer, the concrete reinforcement layer, and the second roadbed fill layer.

[0012] Furthermore, a drainage pipe is also provided inside the main body of the roadbed, and the wall of the drainage pipe is provided with several small water-interfering holes.

[0013] Furthermore, along the longitudinal direction of the roadbed body, the drainage pipes are pre-buried in the roadbed body at the same or different intervals or arranged in sections with more water accumulation.

[0014] Furthermore, along the transverse direction of the main roadbed, the drainage pipe is an arc-shaped pipe with a similar outline to the concrete reinforcement layer, and the arc-shaped pipe is arranged in at least two layers in the first roadbed fill layer and the second roadbed fill layer respectively.

[0015] The beneficial effects disclosed in this utility model are:

[0016] This utility model has a simple structure, is easy to construct, has a short construction period, and low construction cost. It can ensure that the main body of the roadbed has strong stability, load-bearing capacity, and good waterproof and drainage performance, avoid the settlement of the roadbed structure, and improve the service life of the roadbed. It has good practicality and promotion prospects.

[0017] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings, wherein:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] In the diagram, 1. Main roadbed; 101. First roadbed fill layer; 102. Concrete reinforcement layer; 103. Second roadbed fill layer; 104. Waterproof layer; 105. Filter layer; 2. Subgrade; 3. Pavement layer; 4. Grouting anchor; 5. Drainage pipe. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0022] Example 1

[0023] like Figure 1 As shown, a roadbed with waterproof settlement includes a roadbed body 1, a soil base layer 2 at the bottom of the shoulder body 1 and a pavement layer 3 at the top. The roadbed body 1 includes a first roadbed fill layer 101, a concrete reinforcement layer 102 and a second roadbed fill layer 103 arranged sequentially from bottom to top.

[0024] The concrete reinforcement layer 102 is a plain concrete or reinforced concrete arched structure. The arched shape can effectively disperse the pressure from above, reduce the requirements on the supporting structure, and thus improve the stability and bearing capacity of the main roadbed 1, preventing settlement of the roadbed structure. The arched shape can be formed by cast-in-place process or by splicing precast concrete blocks.

[0025] A waterproof layer 104 is provided on the outside of both the first subgrade fill layer 101 and the concrete reinforcement layer 102 to prevent water accumulation from corroding the first subgrade fill layer 101 and the concrete reinforcement layer 102, thereby further improving the stability of the subgrade structure. The waterproof layer 104 can be a waterproof coating, waterproof membrane, etc.

[0026] A filter layer 105 is provided on both sides of the second subgrade fill layer 103, allowing water accumulated in the pavement layer 3 to be quickly drained away through the filter layer 106, thereby reducing corrosion inside the second subgrade fill layer 103 and further improving the stability of the subgrade body 1. The filter layer 105 is arranged on both sides of the bottom of the pavement layer 3 to facilitate the drainage of water accumulated in the pavement layer 3. The filter layer 105 can be a permeable concrete layer, a crushed stone layer, a quartz sand layer, etc.

[0027] This embodiment also includes several grouting anchors 4 penetrating the first roadbed fill layer 101, the concrete reinforcement layer 102, and the second roadbed fill layer 103. The grouting anchors 4 improve the connection strength between the first roadbed fill layer 101, the concrete reinforcement layer 102, and the second roadbed fill layer 103, as well as the overall stability of the roadbed body 1. The grouting anchors are arranged in a fan shape relative to the arched structure. During construction, drilling is carried out after the drilling points are planned, ensuring the hole depth reaches the lower part of the first roadbed fill layer 101. After inserting the grouting anchors 4 into the drilled holes, grouting is then performed.

[0028] Example 2

[0029] like Figure 1 As shown, based on Embodiment 1, the roadbed body 1 is also provided with a drainage pipe 5, and the wall of the drainage pipe 5 is provided with several small water-interfering holes.

[0030] Specifically, during the construction of the main roadbed 1, along the longitudinal direction of the main roadbed 1, drainage pipes 5 can be pre-embedded within the main roadbed 1 at the same or different intervals or arranged in sections with significant water accumulation. This not only facilitates construction but also improves the drainage effect within the main roadbed 1, preventing internal corrosion and further enhancing its stability. Along the transverse direction of the main roadbed 1, the drainage pipes 5 are arc-shaped pipes similar in outline to the concrete reinforcement layer 102, and at least two layers of these arc-shaped pipes are arranged within the first roadbed fill layer 101 and the second roadbed fill layer 103, respectively, for drainage of water accumulated in the first and second roadbed fill layers 101 and 103.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to restrict the present utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments without departing from the technical solution of the present utility model and based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A roadbed with waterproof settlement, comprising a roadbed body (1), a shoulder body (1) having a soil base layer (2) at the bottom and a pavement layer (3) at the top, characterized in that, The main body of the roadbed (1) includes a first roadbed fill layer (101), a concrete reinforcement layer (102), and a second roadbed fill layer (103) arranged sequentially from bottom to top.

2. The roadbed with waterproof settlement as described in claim 1, characterized in that, The concrete reinforcement layer (102) is a plain concrete or reinforced concrete arch structure.

3. The roadbed with waterproof settlement as described in claim 2, characterized in that, The plain concrete or reinforced concrete arched structure is formed by cast-in-place process or by splicing precast concrete blocks.

4. The roadbed with waterproof settlement as described in claim 2, characterized in that, Waterproof layers (104) are provided on the outside of the first subgrade fill layer (101) and the concrete reinforcement layer (102).

5. The roadbed with waterproof settlement according to claim 2, characterized in that, A water filter layer (105) is provided on both sides of the second roadbed fill layer (103).

6. The highway subgrade with waterproof settlement according to any one of claims 1-5, characterized in that, It also includes several grouting anchors (4) that penetrate the first roadbed fill layer (101), the concrete reinforcement layer (102), and the second roadbed fill layer (103).

7. The roadbed with waterproof settlement according to claim 6, characterized in that, The roadbed body (1) is also equipped with a drainage pipe (5), and the drainage pipe (5) has several small water-interfering holes on its wall.

8. The roadbed with waterproof settlement according to claim 7, characterized in that, Along the longitudinal direction of the roadbed body (1), the drainage pipes (5) are pre-buried in the roadbed body (1) at the same or different intervals or arranged in sections with more water accumulation.

9. The highway subgrade with waterproof settlement according to claim 7, characterized in that, Along the transverse direction of the main body of the roadbed (1), the drainage pipe (5) is an arc-shaped pipe with a similar outline to the concrete reinforcement layer (102), and the arc-shaped pipe is arranged in at least two layers in the first roadbed fill layer (101) and the second roadbed fill layer (103).

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