CN217052896U - Prefabricated assembly type roadbed splicing width structure - Google Patents
Prefabricated assembly type roadbed splicing width structure Download PDFInfo
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- CN217052896U CN217052896U CN202220822527.2U CN202220822527U CN217052896U CN 217052896 U CN217052896 U CN 217052896U CN 202220822527 U CN202220822527 U CN 202220822527U CN 217052896 U CN217052896 U CN 217052896U
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Abstract
The utility model discloses a wide structure is pieced together to prefabricated assembled road bed, including the foundation bed layer, old road bed layer and old road surface layer, the step-like structure of multilayer step is established to the side slope of old road bed layer, and its one side of keeping away from old road surface layer is provided with prefabricated buttress formula barricade, prefabricated light block has all been laid on other steps except the step of superiors, be located and be provided with the bed course between the bottom surface of the prefabricated light block of lower floor and the prefabricated buttress formula barricade, the step upper berth of superiors is equipped with cement stabilization rubble leveling layer, cement stabilization rubble leveling layer upper berth is equipped with prefabricated reinforced concrete panel, old road surface layer and prefabricated reinforced concrete panel upper berth are equipped with asphalt concrete road surface layer. The utility model discloses a set up parts such as prefabricated reinforced concrete panel, prefabricated buttressed wall type barricade and prefabricated light block, can realize prefabricated assembly construction, the industrialization degree is high, and construction speed is fast, and construction cycle is short, and not only little to the operation influence of existing highway, the cost is low moreover, and economic nature is good.
Description
Technical Field
The utility model relates to a road construction technical field, more specifically say so and relate to a wide structure is pieced together to prefabricated assembled road bed.
Background
With the rapid development of economic society, many constructed highways cannot meet the requirement of rapid increase of traffic volume, and the widening and reconstruction of the existing highways need to be completed as soon as possible. In the widening reconstruction by utilizing the existing highway, the problem of the widening of the roadbed is frequently encountered, particularly, in the widening reconstruction of the embankment of a soft soil foundation, in order to reduce the differential settlement of the new and old roadbeds, the soft soil foundation is often required to be deeply processed, or the widening roadbed is processed by adopting a preloading mode, and the traditional methods have the problems of long construction period, high manufacturing cost and the like.
Therefore, how to provide a prefabricated assembly type roadbed widening structure which has high construction speed and low construction cost and can effectively reduce differential settlement of new and old roadbeds is one of the technical problems to be solved urgently in the field.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a wide structure is pieced together to prefabricated assembled road bed. The purpose is to solve the above mentioned deficiency.
In order to solve the technical problem, the utility model discloses following technical scheme has been taken:
a prefabricated assembled roadbed splices wide structure, includes: the side slope of the old roadbed is of a step-shaped structure with a plurality of steps, and one side of the side slope, which is close to the step at the lowest layer, is provided with a prefabricated counterfort retaining wall; prefabricated lightweight blocks are laid on the steps except the uppermost step; a cushion layer is arranged between the bottom surface of the prefabricated light block body positioned at the lowermost layer and the prefabricated buttress-type retaining wall; a cement stabilized macadam leveling layer is laid on the step on the uppermost layer and extends to the prefabricated counterfort retaining wall; a prefabricated reinforced concrete panel is laid on the cement stabilized macadam leveling layer; and the asphalt concrete pavement layer is paved on the old pavement layer and the prefabricated reinforced concrete panel.
Preferably, the prefabricated buttress type retaining wall comprises side walls and a bottom plate arranged at the bottoms of the side walls; one side edge of the bottom plate close to the old road base layer is aligned with the edge of the step at the lowest layer; the cushion layer is laid on the bottom plate.
Preferably, hard plates are arranged between the cushion layer and the prefabricated lightweight block body and between the prefabricated lightweight block body and the mud-stabilized macadam leveling layer.
Preferably, the top surface of the old pavement layer is flush with the top surface of the prefabricated reinforced concrete panel, and an anti-cracking geotextile is laid at a seam between the old pavement layer and the prefabricated reinforced concrete panel.
Preferably, two adjacent layers of the prefabricated lightweight blocks are laid in a crisscross mode.
Preferably, joints between adjacent prefabricated reinforced concrete panels are designed to be in a lap joint structure, and are anchored by U-shaped bolts.
The utility model discloses for prior art gain following technological effect:
1) the utility model has the advantages that the prefabricated reinforced concrete panel, the prefabricated counterfort retaining wall, the prefabricated light block body and the like are arranged, the prefabricated assembly construction can be integrally realized, the industrialization degree is high, the construction speed is high, and the construction period is short;
2) the utility model adopts the prefabricated light block body for filling, which can effectively reduce the differential settlement of the new and old roadbed;
3) the utility model can save land by arranging the prefabricated counterfort type retaining wall outside the old road base layer;
4) the utility model discloses not only little to the operation influence of existing highway, the cost is low moreover, and economic nature is good.
Drawings
FIG. 1 is a schematic structural diagram of an existing road before widening and rebuilding;
fig. 2 is a schematic structural view of the prefabricated assembled roadbed widening structure after the existing highway is widened and reconstructed;
FIG. 3 is a schematic structural view of the prefabricated buttress-type retaining wall of the present invention;
FIG. 4 is a schematic structural view of the prefabricated lightweight block of the present invention;
FIG. 5 is a schematic structural view of the joint between the prefabricated reinforced concrete panels of the present invention;
in the figure: 1. a ground layer; 2. old road base layer; 3. an old pavement layer; 4. prefabricating a counterfort retaining wall; 401. a side wall; 402. a base plate; 5. prefabricating a lightweight block; 6. a cushion layer; 7. leveling layer of cement stabilized macadam; 8. prefabricating a reinforced concrete panel; 9. an asphalt concrete pavement layer; 10. a hard plate; 11. anti-cracking geotextile; 12. a U-shaped bolt; 13. a gutter; 14. and (5) using a ground boundary pile.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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 efforts all belong to the protection scope of the present invention.
Examples
Referring to fig. 1-4 and showing the utility model discloses a wide structure is pieced together to prefabricated assembled road bed, include: the side slope of the old roadbed 2 is of a step-shaped structure with a plurality of steps, and a prefabricated buttress retaining wall 4 is arranged on one side of the old roadbed 2 close to the step of the lowest layer; the prefabricated light block bodies 5 are laid on the steps except the uppermost step and extend to the prefabricated counterfort retaining wall 4; a cushion layer 6 is arranged between the bottom surface of the prefabricated lightweight block 5 at the lowest layer and the prefabricated buttress-type retaining wall 4; a cement stabilized macadam leveling layer 7 is laid on the step on the uppermost layer and extends to the prefabricated counterfort retaining wall 4; a prefabricated reinforced concrete panel 8 is laid on the cement stabilized macadam leveling layer 7; and an asphalt concrete pavement layer 9 is paved on the old pavement layer 3 and the prefabricated reinforced concrete panel 8.
In this embodiment, the prefabricated counterfort retaining wall 4 comprises side walls 401 and a bottom plate 402 arranged at the bottom of the side walls 401; one side edge of the bottom plate 402 close to the old roadbed layer 2 is aligned with the edge of the step at the lowest layer; the mat 6 is laid on the base plate 402.
In the present embodiment, the bottom plate 402 is embedded in the foundation layer 1; the top surface of the bottom plate 402 is lower than the bottom surface of the old roadbed layer 2; the top surface of the mat layer 6 is higher than the bottom surface of the road base layer 2.
In this embodiment, the prefabricated counterfort retaining wall 4 is an integrally formed structure.
In this embodiment, the height of each step in the middle of the old roadbed layer 2 is the same as the thickness of the prefabricated lightweight block 5, so as to ensure that the top and bottom surfaces of the prefabricated lightweight block 5 are flush with the top and bottom surfaces of the corresponding step, respectively.
In this embodiment, hard plates 10 are provided between the cushion layer 6 and the prefabricated lightweight block 5, and between the prefabricated lightweight block 5 and the mud-stabilized macadam leveling layer, respectively, for playing a role of protecting the prefabricated lightweight block 5.
In this embodiment, the top surface of old road surface layer 3 and the top surface parallel and level of prefabricated reinforced concrete panel 8, and seam crossing between the two has laid crack control geotechnological cloth 11 for prevent later stage road surface fracture.
In this embodiment, two adjacent layers of prefabricated lightweight blocks 5 are laid in a criss-cross manner for improving the stability of the overall structure.
In the embodiment, the joints between the adjacent prefabricated reinforced concrete panels 8 are designed to be in a lap joint structure, and the U-shaped bolts 12 are adopted for anchoring connection at intervals of 1 mm; and the bolt holes and the anchor grooves at the joints of the U-shaped bolts 12 are plugged by adopting epoxy mortar.
In the embodiment, the width of the seam at the seam between the adjacent prefabricated reinforced concrete panels 8 is less than or equal to 1mm, and epoxy resin glue is filled in the seam for firm bonding.
In the present embodiment, the bedding 6 is one of gravel or graded crushed stone, but not limited thereto.
In this embodiment, the thickness of the prefabricated reinforced concrete panel 8 is 15-20 cm, and the plane size can be designed as required.
In this embodiment, the length of prefabricated buttress type barricade 4 is 2 ~ 6m, convenient handling.
In this embodiment, the width of the gap between adjacent prefabricated lightweight blocks 5 on the same layer is less than 2cm, and when the width of the gap is greater than the tolerance, sand and shrinkage-free cement mortar are used for filling; the height difference between the adjacent prefabricated light block bodies 5 on the same layer is less than 5 mm; the height difference between the adjacent prefabricated light block bodies 5 is leveled by adopting non-shrinkage cement mortar.
In this embodiment, adjacent prefabricated lightweight blocks 5 are fixedly connected by metal ties.
In this embodiment, the prefabricated lightweight blocks 5 of adjacent layers are fixedly connected by double-sided claw coupling members.
In this embodiment, polystyrene foam is used for the prefabricated lightweight block 5.
In the embodiment, the thickness of the leveling layer 7 of the cement stabilized macadam is 15-20 cm.
In this embodiment, the prefabricated counterfort retaining wall 4 is made of reinforced concrete, the strength grade of the concrete is not lower than C30, and HRB400 and HPB300 steel bars are arranged inside the counterfort retaining wall.
In the embodiment, the concrete strength grade of the prefabricated reinforced concrete panel 8 is not lower than C30.
In this embodiment, the foundation layer 1 is further provided with a gutter 13 and a ground stake 14 on the side away from the prefabricated counterfort retaining wall 4.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (6)
1. A prefabricated assembled roadbed splicing width structure comprises: the pavement comprises a foundation course (1), an old pavement layer (2) laid on the foundation course (1) and an old pavement layer (3) laid on the old pavement layer (2), and is characterized in that a side slope of the old pavement layer (2) is of a step-shaped structure with multiple steps, and a prefabricated buttress-type retaining wall (4) is arranged on one side of the step close to the lowest layer; the steps except the uppermost step are paved with prefabricated lightweight blocks (5) and extend to the prefabricated buttress type retaining wall (4); a cushion layer (6) is arranged between the bottom surface of the prefabricated light block body (5) at the lowest layer and the prefabricated buttress type retaining wall (4); a cement stabilized macadam leveling layer (7) is laid on the step on the uppermost layer and extends to the prefabricated buttress type retaining wall (4); a prefabricated reinforced concrete panel (8) is paved on the cement stabilized macadam leveling layer (7); and an asphalt concrete pavement layer (9) is paved on the old pavement layer (3) and the prefabricated reinforced concrete panel (8).
2. The prefabricated roadbed widening structure according to claim 1, wherein the prefabricated counterfort retaining wall (4) comprises side walls (401) and a bottom plate (402) arranged at the bottom of the side walls (401); one side edge of the bottom plate (402) close to the old road base layer (2) is aligned with the edge of the step at the lowest layer; the cushion layer (6) is laid on the bottom plate (402).
3. The prefabricated assembly type roadbed widening structure according to claim 1, wherein hard plates (10) are arranged between the cushion layer (6) and the prefabricated lightweight blocks (5) and between the prefabricated lightweight blocks (5) and the mud-stabilized macadam leveling layer.
4. The prefabricated assembled roadbed widening structure according to claim 1, wherein the top surface of the old pavement layer (3) is flush with the top surface of the prefabricated reinforced concrete panel (8), and an anti-cracking geotextile (11) is laid at the joint between the old pavement layer and the prefabricated reinforced concrete panel.
5. A prefabricated roadbed widening structure according to claim 1, wherein two adjacent layers of the prefabricated light blocks (5) are laid in a criss-cross manner.
6. A prefabricated roadbed widening structure according to claim 1, characterized in that joints between adjacent prefabricated reinforced concrete panels (8) are designed into a lap-joint-shaped structure and are anchored by using U-shaped bolts (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220822527.2U CN217052896U (en) | 2022-04-11 | 2022-04-11 | Prefabricated assembly type roadbed splicing width structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220822527.2U CN217052896U (en) | 2022-04-11 | 2022-04-11 | Prefabricated assembly type roadbed splicing width structure |
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| Publication Number | Publication Date |
|---|---|
| CN217052896U true CN217052896U (en) | 2022-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220822527.2U Active CN217052896U (en) | 2022-04-11 | 2022-04-11 | Prefabricated assembly type roadbed splicing width structure |
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| CN (1) | CN217052896U (en) |
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- 2022-04-11 CN CN202220822527.2U patent/CN217052896U/en active Active
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