CN217678392U - Reform transform structure based on existing road bed - Google Patents

Abstract

The utility model provides a reform transform structure based on existing road bed, include: the graded broken stone cushion layer is characterized by comprising a graded broken stone cushion layer, wherein a reinforced concrete base layer is laid on the surface of the graded broken stone cushion layer and serves as a water-resisting layer and a hard shell layer; the reinforced concrete base layer surface is connected with the cement stabilized macadam base layer through the cement stabilized macadam base layer I and the cement stabilized macadam base layer II in a filling and paving mode, and the cement stabilized macadam base layer surface is connected with the asphalt concrete layer in a filling and paving mode through the permeable sealing layer. Through the novel transformation to old road surface structure matching degree, make the roadbed surface upwards in proper order respectively for graded broken stone bed course, reinforced concrete basic unit, cement stabilization broken stone basic unit (one, two) pass through the seal coat, bituminous concrete lower surface course, viscous layer oil and the pitch mastic broken stone mixture upper surface course on its surface, old road roadbed and surface are add above-mentioned novel structural layer and the matching degree is good, can effectively solve the problem that road bed humidity is too big among the old road transformation, the degree of compaction is difficult to reach the standard requirement.

Description

Reform transform structure based on existing road bed

Technical Field

The utility model relates to a road bed field especially relates to a reform transform structure based on existing road bed.

Background

Along with the rapid growth of national economy in China, the traffic volume of roads is increasing day by day, the traffic capacity of many roads in urban areas cannot meet the traffic demand, and meanwhile, various pipelines under the roads have the problems of old materials, rain and sewage confluence, small pipe diameters and the like, and the reconstruction usually involves the quality improvement of the roads and the pipeline updating, and the original road surface needs to be excavated and newly built.

And urban underground water level buries the depth, and the road bed is in moist state for a long time, when reforming transform, after excavating the road surface structural layer, old road bed compactness often can not satisfy the standard requirement, still need face the condition that the time limit for a project required urgency simultaneously, and the selection of high water level road bed filling material and the formulation of road surface structural style become the urgent problem that needs to solve in old road reforms transform.

SUMMERY OF THE UTILITY MODEL

The utility model aims at prior art's weak point, provide a reform transform structure based on existing road bed, through to old road bed and newly-built road surface matching degree transformation, make the road bed upwards in proper order respectively for graded broken stone bed course, reinforced concrete basic unit, cement stabilized macadam basic unit (one, two), pass through seal coat, asphalt concrete lower surface course, clay coating oil and surface pitch mastic mixture upper surface course. Through above-mentioned structural design, make old road bed and surface by add the road surface structural layer that above-mentioned structure constitutes, and the structure matching degree is good, can effectively solve old road bed humidity too big and the compactness is difficult to satisfy standard requirement scheduling problem, satisfies the transformation demand.

In order to achieve the above object, the utility model provides a following technical scheme:

a reform transform structure based on existing road bed includes: the graded broken stone cushion layer is characterized in that a reinforced concrete base layer is paved on the surface of the graded broken stone cushion layer, and the reinforced concrete base layer is used as a waterproof layer and a crust layer;

the reinforced concrete base layer surface is connected with the cement stabilized macadam base layer through the cement stabilized macadam base layer I and the cement stabilized macadam base layer II in a filling and paving mode, the cement stabilized macadam base layer surface is connected with the asphalt concrete layer lower surface layer through the permeable sealing layer in a filling and paving mode, the asphalt concrete lower surface layer is connected with the asphalt mastic macadam mixture upper surface layer in a filling and paving mode through adhesive layer oil, and the adhesive layer oil is used for improving the adhesive force between the asphalt concrete lower surface layer and the asphalt mastic macadam mixture upper surface layer.

Preferably, the cement stabilized macadam base layer II, the penetrating seal layer, the asphalt concrete lower surface layer, the viscous layer oil and the asphalt mastic macadam mixture upper surface layer are sequentially connected to one side of the flat stone layer in a stacking mode, the other side of the flat stone layer is connected with the lateral stone layer, and the flat stone layer and the lateral stone layer are connected with the cement stabilized macadam base layer II through the cement mortar layer at the bottom of the flat stone layer and the lateral stone layer.

Preferably, the side stone layer is kept away from flat stone layer one side and is equipped with the graded broken stone bed course, graded broken stone bed course top is equipped with cement concrete basic unit, cement concrete basic unit top is equipped with hard cement mortar layer futilely, hard cement mortar layer top surface is equipped with granite pavement layer.

Preferably, a concrete shoulder pad is arranged between the side stone layer and the graded broken stone cushion layer and between the side stone layer and the cement concrete base layer.

Preferably, a steel mesh is arranged inside the reinforced concrete base layer.

Preferably, a steel bar net piece is arranged inside the reinforced concrete base layer, and the thickness of the graded broken stone cushion layer at the bottom of the reinforced concrete base layer is larger than that of the graded broken stone cushion layer at the bottom of the cement concrete base layer.

The beneficial effects of the utility model reside in that:

1. graded broken stone cushion layer, reinforced concrete basic unit, cement stabilized broken stone basic unit (one, two), pass through the seal coat, asphalt concrete lower surface course, viscous layer oil and its surface pitch mastic broken stone mixture upper surface course, above-mentioned novel structural layer is add on old road bed and its surface, and the structure matching degree is good, can effectively solve old road bed humidity too big and the compactness is difficult to satisfy standard requirement scheduling problem, satisfies the transformation demand.

To sum up, the utility model has the advantages of road bed road surface stable in structure, require lower to current situation road bed compactness.

Drawings

FIG. 1 is a structural view of a junction between a pedestrian path and a roadway;

FIG. 2 is a view showing the structure of an asphalt pavement of a roadway;

FIG. 3 is a standard cross-sectional plan view of a road.

In the figure: 1. a graded broken stone cushion layer; 2. a reinforced concrete base layer; 3. cement stabilized macadam base layer I; 4. a cement stabilized macadam base layer II; 5. a sealing layer; 6. an asphalt concrete lower surface layer; 7. coating oil; 8. an upper surface layer of the mixture of asphalt mastic and macadam; 9. a flat stone layer; 10. a side stone layer; 11. a cement mortar layer; 12. a cement concrete base layer; 13. a dry hard cement mortar layer; 14. granite paving pavement layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in fig. 1 to 3, a modified structure based on an existing road bed includes:

the graded broken stone cushion layer comprises a graded broken stone cushion layer 1, wherein a reinforced concrete base layer 2 is laid on the surface of the graded broken stone cushion layer 1, and the reinforced concrete base layer 2 is used as a waterproof layer and a crust layer;

the reinforced concrete base layer 2 is connected with a cement stabilized macadam base layer II 4 in a filling and paving mode through a cement stabilized macadam base layer I3, the cement stabilized macadam base layer II 4 is connected with an asphalt concrete upper surface layer 6 in a filling and paving mode through a permeable sealing layer 5, the asphalt concrete upper surface layer 6 is connected with an asphalt mastic macadam mixture upper surface layer 8 in a filling and paving mode through adhesive layer oil 7, and the adhesive layer oil 7 is used for improving the adhesive force between the lower surface layer 6 and the upper surface layer 8; the thickness of the reinforced concrete base course 2 is preferably 20cm, the cement dosage in the first cement stabilized macadam base course 3 and the second cement stabilized macadam base course 4 is preferably 3.5% and 4.5% respectively, 0.35% of anti-rutting agent is mixed in the asphalt concrete layer 6, and the thickness of the mixed material layer 8 is 4cm;

the standard value of the 7-day water immersion unconfined compressive strength of the first and second cement stabilized macadam base layers (3 and 4) is 3 to 4Mpa, the 3-degree of compaction of the first base layer is required to be more than 98 percent, and the 4-degree of compaction of the second base layer is required to be more than 97 percent.

As improving ground, two 4 of cement stabilized macadam base course, penetrating seal 5, asphalt concrete lower surface course 6, viscous layer oil 7 and pitch mastic rubble mixture upper surface course 8 range upon range of connection in proper order are in one side of dull and stereotyped layer 9, the other side of dull and stereotyped layer 9 is connected with the kerbstone layer 10, dull and stereotyped layer 9 and kerbstone layer 10 are all connected through the cement mortar layer 11 and two 4 of cement stabilized macadam base course of its bottom, and dull and stereotyped layer 9 and kerbstone layer 10 comprise the granite, the apex angle of kerbstone layer 10 comprises 2x 2's chamfer, and then improves the safety in utilization of kerbstone layer 10.

As an improved place, one side of the side stone layer 10 far from the flat stone layer 9 is provided with a graded broken stone cushion layer 1, the top of the graded broken stone cushion layer 1 is provided with a cement concrete base layer 12, the top of the cement concrete base layer 12 is provided with a dry and hard cement mortar layer 13, a granite paving road surface layer 14 is laid on the top surface of the dry and hard cement mortar layer 13, the thickness of the cement concrete base layer 12 is preferably 15cm, the thickness of the dry and hard cement mortar layer 13 is preferably 3cm, the thickness of the granite paving road surface layer 14 is preferably 5cm, and the granite paving road surface layer 14 is composed of sesame black litchi surface granite.

As a modification, a concrete shoulder protector is arranged between the side stone layer 10 and the gravel cushion layer 1 and between the side stone layer and the cement concrete base layer 12.

As a modification, a steel mesh is arranged inside the reinforced concrete base layer 2, the thickness of the graded broken stone cushion layer 1 at the bottom of the reinforced concrete base layer 2 is preferably 20cm, and the thickness of the graded broken stone cushion layer 1 at the bottom of the cement concrete base layer 12 is preferably 10cm.

In actual construction, old road transformation is often in old city areas and core areas, and the transformation is bound to face a series of common problems that the bearing capacity of an old road structure is insufficient, new construction needs to be excavated, the vertical lifting space of a road surface is limited, the underground water level is high, an old road bed is in a wet state for a long time, the compactness of the road bed does not meet requirements, the construction period is tight, and the like;

therefore, when the roadway pavement is reformed, the graded broken stone cushion layer 1 can correspond to underground water phases by excavating the roadbed, a reinforced concrete base layer 2 is laid on the surface of the graded broken stone cushion layer 1, a reinforced mesh is arranged in the reinforced concrete base layer 2, the stability and the water resistance of the reinforced concrete base layer 2 are improved, a cement-stabilized broken stone base layer I3 and a cement-stabilized broken stone base layer II 4 are sequentially arranged on the surface of the reinforced concrete base layer 2, a permeable sealing layer 5 is arranged on the surface of the cement-stabilized broken stone base layer II 4, an asphalt concrete lower surface layer 6 is laid on the surface of the permeable sealing layer 5, a sticky layer oil 7 is arranged on the surface of the asphalt concrete lower surface layer 6, the adhesion force between the asphalt upper surface layer and the lower surface layer is improved, an asphalt mastic mixture upper surface layer 8 is arranged on the surface of the sticky layer oil 7, a novel pavement structure is formed by matching the structure, and the roadbed structure is in a wet state for a long time, the construction requirement of the roadway in urban areas is tight, and the roadbed compactness can not meet the requirement.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (5)

1. The utility model provides a reform transform structure based on existing road bed which characterized in that includes:

the graded broken stone cushion layer is characterized in that a reinforced concrete base layer is paved on the surface of the graded broken stone cushion layer, and the reinforced concrete base layer is used as a waterproof layer and a crust layer;

the reinforced concrete base layer surface is connected with the cement stabilized macadam base layer through the cement stabilized macadam base layer I in a filling and paving mode, the cement stabilized macadam base layer surface is connected with the asphalt concrete lower surface layer through the permeable sealing layer in a filling and paving mode, the asphalt concrete lower surface layer is connected with the asphalt mastic macadam mixture upper surface layer in a filling and paving mode through adhesive layer oil, and the adhesive layer oil is used for improving the adhesive force between the asphalt concrete lower surface layer and the asphalt mastic macadam mixture upper surface layer.

2. A reformed structure based on existing road subgrade according to claim 1, characterized in that the cement stabilized macadam foundation layer two, the permeable sealing layer, the asphalt concrete lower surface layer, the clay layer oil and the asphalt mastic macadam mixture upper surface layer are sequentially connected on one side of the flat stone layer in a stacking manner, the other side of the flat stone layer is connected with the lateral stone layer, and the flat stone layer and the lateral stone layer are both connected with the cement stabilized macadam foundation layer two through the cement mortar layer at the bottom of the flat stone layer.

3. A reformed structure based on an existing road subgrade according to claim 2, wherein a graded broken stone cushion layer is arranged on one side of the side stone layer, which is far away from the flat stone layer, a cement concrete base layer is arranged on the top of the graded broken stone cushion layer, a dry and hard cement mortar layer is arranged on the top of the cement concrete base layer, and a granite paving road surface layer is paved on the top surface of the dry and hard cement mortar layer.

4. A reformed structure based on existing road bed as claimed in claim 3, wherein a concrete shoulder pad is provided between the lateral stone layer and the graded broken stone cushion layer and the cement concrete base layer.

5. A reformed structure based on the existing road subgrade according to claim 4, wherein a reinforced mesh is arranged inside the reinforced concrete base layer, and the thickness of the graded broken stone cushion layer at the bottom of the reinforced concrete base layer is larger than that of the graded broken stone cushion layer at the bottom of the cement concrete base layer.

Images