CN210529394U - Foam light soil load-reducing replacement roadbed structure - Google Patents
Foam light soil load-reducing replacement roadbed structure Download PDFInfo
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- CN210529394U CN210529394U CN201920953787.1U CN201920953787U CN210529394U CN 210529394 U CN210529394 U CN 210529394U CN 201920953787 U CN201920953787 U CN 201920953787U CN 210529394 U CN210529394 U CN 210529394U
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Abstract
The utility model discloses a foam lightweight soil deloading replacement roadbed structure, include: the wedge-shaped supporting and filling blocks are arranged along the length direction of a road bed to be filled and are paved in an overlapped mode along the height of the road bed, a bedding layer is clamped between every two adjacent foamed light soil layers, and a plurality of vibroflotation piles are uniformly arranged in each foamed light soil layer at intervals; the utility model discloses a set up the multilayer and applied the bed course and effectively solved the problem of subsiding after-construction of foam light soil construction, shake through setting up and dash the stake and make the bearing capacity greatly increased on road surface strengthen the compressive capacity on road surface, effectively prevented the problem of road surface fracture, road surface travelling comfort is good moreover, long service life.
Description
Technical Field
The utility model relates to a highway field. More specifically speaking, the utility model relates to a foam lightweight soil subtracts carries and replaces roadbed structure.
Background
The road surface that adopts foam light soil as filler is under dead weight load and vehicle load long-term effect, and the road bed is under self compression and vehicle load's long-term effect, and self compression and settlement can take place for the road surface, take place great post-construction settlement and uneven settlement deformation, reflect on the road surface, show that the road surface is undulant, appear the later stage problem of road surface fracture, bridgehead jump car, influence the travelling comfort on road surface, reduce the life on road surface.
The existing technology adopts the trapezoidal batch filling scheme to perform the anti-settlement operation, but the road surface settlement cannot be effectively prevented due to the limited stress points.
Disclosure of Invention
An object of the utility model is to solve at least above-mentioned problem to a foam light soil deloading replacement roadbed structure is provided, its after-construction settlement problem of applying the bed course through setting up the multilayer and effectively having solved foam light soil construction, makes the bearing capacity greatly increased on road surface strengthen the compressive capacity on road surface through setting up the shake-impact stake, has effectively prevented the problem of road surface fracture, and road surface travelling comfort is good moreover, long service life.
In order to achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a foamed lightweight soil deloading replacement roadbed structure, comprising:
the section of the wedge-shaped supporting and filling block is a right-angled triangle, two right-angled sides are respectively attached to the edge and the bottom surface of the road bed, and the height of the wedge-shaped supporting and filling block is the same as that of the edge of the road bed;
the multilayer foam light soil layers are laid from the bottommost surface to the top in an overlapped mode along the height of the roadbed, the width of each multilayer foam light soil layer is increased sequentially from bottom to top, and a laying cushion layer is arranged between every two adjacent foam light soil layers in a clamped mode;
wherein, a plurality of vibroflotation piles are uniformly arranged in each layer of the foam lightweight soil layer at intervals.
Preferably, the thickness of the multilayer bedding layers decreases in sequence along the height of the roadbed.
Preferably, the dressing layer is a chemical fiber non-woven fabric.
Preferably, the wedge-shaped support filling block is reinforced concrete.
Preferably, the wedge supports the packing piece and is obtained by the rectangular piece and the trapezoidal rectangular piece concatenation of a plurality of vertical cross-sections for right triangle's rectangular piece concatenation of vertical cross-section, and a plurality of cross-sections are trapezoidal rectangular piece and are folded upwards along the direction of height of road bed according to the order that the base reduces in proper order and establish, and the top position cross-section is right triangle's rectangular piece, and adjacent vertical cross-section is all pressed from both sides between trapezoidal rectangular piece and the rectangular piece that vertical cross-section is right triangle and is equipped with the bedding course, and the number of piles of bedding course is than the unilateral vertical cross-section is right triangle's rectangular piece and vertical cross-section is 1 less than the total number of trapezoidal rectangular piece.
Preferably, horizontal projections of the vibroflotation piles on every two adjacent foamed light soil layers do not overlap.
Preferably, the lowest layer of the multi-layer foam light soil layer is provided with a hard sand layer.
The utility model discloses at least, include following beneficial effect:
1. the utility model adopts the foam light soil as the basic filler, the wedge-shaped supporting filling blocks are arranged at the edge of the road bed to support the multilayer foam light soil layers, and the dressing cushion layer is filled between the adjacent foam light soil layers, so that the foam light soil can be effectively prevented from post-construction settlement, and the service life of the road is prolonged;
2. the vibroflotation piles are arranged in each layer of foamed light soil, the density of the vibroflotation piles is higher than that of the light soil, the vibroflotation piles can play a supporting role in the foamed light soil, the load capacity of a road is effectively increased, and the projections of the vibroflotation piles are not overlapped, so that supporting points are dispersed, the stress is more balanced, and the stress balance of the road surface is better;
3. the cushion layer is embedded in the wedge-shaped supporting filling block, so that the foam light soil layer on the upper layer can be effectively supported, the pressure of the foam light soil layer on the lower layer, which is generated by the overlapped foam light soil layers, is reduced, the pressure is more dispersed, and the partial collapse of the pavement is prevented.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a roadbed structure with foam light soil load reduction and replacement according to one technical scheme of the invention;
fig. 2 is a schematic structural diagram of the roadbed structure of the foam light soil load reduction replacement in one of the technical solutions of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1-2, the utility model provides a foam lightweight soil deloading replacement roadbed structure, include:
the wedge-shaped supporting and filling block 5 is long-strip-shaped and is arranged along the length direction of a road bed to be filled, the vertical section of the wedge-shaped supporting and filling block 5 is a right-angled triangle, two right-angled sides are respectively attached to the edge and the bottom surface of the road bed, and the height of the wedge-shaped supporting and filling block is the same as that of the edge 1 of the road bed;
the multilayer foam light soil layers are laid from the bottommost surface to the top in an overlapped mode along the height of the roadbed, the width of each multilayer foam light soil layer is increased sequentially from bottom to top, and a laying cushion layer 3 is arranged between every two adjacent foam light soil layers in a clamped mode;
wherein, a plurality of vibroflotation piles 2 are uniformly arranged in each layer of foam lightweight soil layer at intervals;
in the technical scheme, the concrete construction process comprises the steps of firstly binding two reinforcement cages along the length direction of the roadbed, pouring and curing concrete of C30 to obtain a long-strip-shaped wedge-shaped supporting filling block 5, wherein the cross sections of the reinforcement cages are right-angled triangles; the height of the strip-shaped wedge-shaped supporting and filling blocks 5 is the same as that of the road bed, the wedge-shaped supporting and filling blocks 5 are placed in the road bed and fixed with the two edges of the road bed through the same concrete, foam light soil is uniformly filled in the road bed after the wedge-shaped supporting and filling blocks 5 are fixed, and when the curing degree of the foam light soil is 55-70%, a vibroflotation device is adopted to fill the foam light soil into the road bedBuilding piles in the soil layer to obtain a plurality of vibroflotation piles 2, wherein the vibroflotation piles 2 are uniformly arranged at intervals of every 30cm2Setting 1 in the area of the road bed, then paving a layer of bedding on the foam light soil layer, after the foam light soil is solidified, continuously filling the foam light soil on the bedding layer, and continuously repeating the steps until the road bed is filled;
by adopting the technical scheme, the foam light soil is used as a basic filler, the wedge-shaped supporting filling blocks 5 are arranged at the edge 1 of the road bed to support a plurality of layers of foam light soil layers, and the laying cushion layers 3 are filled between the adjacent foam light soil layers, so that the tension between the foam light soil layers is increased, the post-construction settlement of the foam light soil can be effectively prevented, and the service life of the road is prolonged; in addition, the vibroflotation piles 2 are arranged in each layer of foamed light soil, the density of the vibroflotation piles 2 is higher than that of the light soil, a supporting effect can be achieved in the foamed light soil, and the load capacity of the road is effectively increased.
In another technical scheme, the thickness of the multiple bedding layers 3 is reduced along the height of the roadbed in sequence, namely the thickness of the bottommost bedding layer 3 is the thickest, and by adopting the technical scheme, because the pressure received by the bedding layer 3 which is positioned at the bottom layer is larger, the shearing resistance and the pulling resistance are weaker, and the bedding layer is easier to deform under heavy pressure, so that the bedding layer 3 is set to different thicknesses to ensure that each bedding layer 3 can have enough shearing resistance and pulling resistance to support the upper foam light soil layer and achieve the balance effect.
In another technical scheme, the dressing layer 3 is made of chemical fiber non-woven fabrics, and compared with other dressing materials, the technical scheme can effectively utilize the shearing resistance and the pulling resistance to enhance the passing of construction machinery, uniformly support the filling load, reduce the local settlement and the lateral displacement of the roadbed and improve the supporting capacity of the foundation.
In another technical scheme, the wedge-shaped supporting filling block 5 is of a reinforced concrete structure, and by adopting the technical scheme, on one hand, a long-layer foam light soil layer can be effectively and obliquely supported, the pressure of the foam light soil layer is prevented from completely falling on a lower-layer foam light soil layer, and the wedge-shaped supporting filling block 5 can be more stably supported by adopting the reinforced concrete structure, so that the service life is long.
In another technical scheme, the wedge-shaped supporting and filling block 5 is obtained by splicing a long block with a right-angled triangle vertical section and a plurality of long blocks with a trapezoid vertical section, the plurality of long blocks with the trapezoid sections are overlapped from bottom to top along the height direction of the road bed according to the sequence that the bottom edges of the long blocks are sequentially reduced, and the section of the uppermost layer is the long block with the right-angled triangle;
after a plurality of long blocks with trapezoidal vertical sections and a long block with right-angled triangle vertical section are overlapped and spliced, the whole section is a right-angled triangle;
adjacent vertical cross section is all pressed from both sides between trapezoidal rectangular piece and the rectangular piece that vertical cross section is right angled triangle and is equipped with and applies bed course 3, and the number of piles that applies bed course 3 is than the unilateral vertical cross section is right angled triangle's rectangular piece and vertical cross section and is 1 layer less than the total number of trapezoidal rectangular piece, adopts this technical scheme, can increase and apply shear and the pulling resistance of bed course 3, and effectual pressure of receiving upper foam light soil disperses, on the wedge supports filling block 5 for the road surface can not lead to the local collapse because of local atress is too big.
In another technical scheme, the horizontal plane projections of the vibroflotation piles 2 on every two adjacent foam light soil layers are not overlapped, and by adopting the technical scheme, the projections of the vibroflotation piles 2 are not overlapped, so that supporting points are dispersed, the stress is more balanced, and the stress balance of the road surface is better.
In another technical scheme, a hard sand layer 4 is arranged at the lowest layer of the multi-layer foam light soil layer, the thickness of the hard sand layer 4 is about 0.3-0.6m, and by adopting the technical scheme, the foam light soil layer can be solidified, and an underground drainage layer in the filling soil can be conveniently formed, so that the drainage is convenient, the water level in the foam light soil layer is reduced, and good construction conditions are provided for construction machinery when the road bed is filled.
The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. The application, modification and variation of the foamed lightweight soil deloading replacement roadbed structure of the present invention will be apparent to those skilled in the art.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (7)
1. Foam light soil deloading replacement roadbed structure, its characterized in that includes:
the section of the wedge-shaped supporting and filling block is a right-angled triangle, two right-angled sides are respectively attached to the edge and the bottom surface of the road bed, and the height of the wedge-shaped supporting and filling block is the same as that of the edge of the road bed;
the multilayer foam light soil layers are laid from the bottommost surface to the top in an overlapped mode along the height of the roadbed, the width of each multilayer foam light soil layer is increased sequentially from bottom to top, and a laying cushion layer is arranged between every two adjacent foam light soil layers in a clamped mode;
wherein, a plurality of vibroflotation piles are uniformly arranged in each layer of the foam lightweight soil layer at intervals.
2. The foamed lightweight soil load-shedding displacement roadbed structure of claim 1, wherein the thickness of the plurality of bedding layers decreases in sequence along the height of the roadbed.
3. The foamed lightweight soil load shedding displacement roadbed structure of claim 1, wherein the bedding layer is a chemical fiber non-woven fabric.
4. The foamed lightweight soil load shedding displacement roadbed structure of claim 1, wherein the wedge shaped support filling blocks are reinforced concrete.
5. The foam lightweight soil load reduction and replacement roadbed structure of claim 1, wherein the wedge-shaped support filling block is formed by splicing a long block with a right-angled triangle vertical section and a plurality of long blocks with a trapezoid vertical section, the plurality of long blocks with the trapezoid cross section are stacked upwards from bottom to top along the height direction of the roadbed according to the sequence that the bottom edges of the long blocks are sequentially reduced, the section of the uppermost layer is the long block with the right-angled triangle, a bedding layer is respectively clamped between the adjacent long block with the trapezoid vertical section and the long block with the right-angled triangle vertical section, and the number of the bedding layer is less than 1 layer than the total number of the single long block with the right-angled triangle vertical section and the long block with the trapezoid vertical section.
6. The foam light soil load-shedding displacement roadbed structure of claim 1, wherein horizontal projections of the vibroflotation piles on every two adjacent foam light soil layers are not overlapped.
7. The foamed lightweight soil deloading displacement roadbed structure of claim 1, wherein the lowermost layer of said plurality of foamed lightweight soil layers is provided with a hard sand layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920953787.1U CN210529394U (en) | 2019-06-24 | 2019-06-24 | Foam light soil load-reducing replacement roadbed structure |
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| CN201920953787.1U CN210529394U (en) | 2019-06-24 | 2019-06-24 | Foam light soil load-reducing replacement roadbed structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411298A (en) * | 2020-11-11 | 2021-02-26 | 江苏中达建设工程有限公司 | Load-bearing porous drainage asphalt concrete surface layer structure and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411298A (en) * | 2020-11-11 | 2021-02-26 | 江苏中达建设工程有限公司 | Load-bearing porous drainage asphalt concrete surface layer structure and construction method thereof |
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