CN215104348U - Roadbed structure for treating deep soft miscellaneous fill soil by combining dynamic compaction replacement with foam light soil - Google Patents
Roadbed structure for treating deep soft miscellaneous fill soil by combining dynamic compaction replacement with foam light soil Download PDFInfo
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- CN215104348U CN215104348U CN202121027811.2U CN202121027811U CN215104348U CN 215104348 U CN215104348 U CN 215104348U CN 202121027811 U CN202121027811 U CN 202121027811U CN 215104348 U CN215104348 U CN 215104348U
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- 239000002689 soil Substances 0.000 title claims abstract description 51
- 238000005056 compaction Methods 0.000 title claims abstract description 30
- 239000006260 foam Substances 0.000 title claims abstract description 24
- 239000004575 stone Substances 0.000 claims abstract description 45
- 238000001514 detection method Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 8
- 238000010276 construction Methods 0.000 description 8
- 239000002131 composite material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007596 consolidation process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a roadbed structure of dark soft miscellaneous fill-up is handled to dynamic compaction replacement joint foam light soil, include: pavement structures and foundation layers; the pavement structure is laid on the foundation layer; the foundation course includes a plurality of columnar stone piers and soil between the piers, the stone piers are evenly distributed along the horizontal plane, and the soil between the piers is filled in between the stone piers. An object of the utility model is to provide a reduce the road bed structure that dark soft miscellaneous fill soil was handled to dynamic compaction replacement combination foam light soil that subsides behind the highway.
Description
Technical Field
The utility model relates to a highway engineering ground handles technical field, in particular to road bed structure that dark soft miscellaneous fill soil was handled to dynamic compaction replacement joint foam light soil.
Background
The deep soft miscellaneous fill has the characteristics of low strength, high water content, high porosity, great compressibility and the like, brings great obstruction to the construction of the expressway, and influences the long-term quality of the expressway, so that the deep soft miscellaneous fill subgrade needs to be effectively reinforced to enhance the strength and the bearing capacity of the subgrade. At present, the common deep soft miscellaneous fill processing methods include a pre-pressing drainage method and a CFG pile method. The prepressing drainage method needs long time, and the technical characteristics of the project with a tight construction period are difficult to meet the requirements; the CFG pile method has high manufacturing cost, large construction difficulty and large construction quality control difficulty. Both foundation treatment methods have some defects in engineering practice, and a novel roadbed structure needs to be provided.
The dynamic compaction replacement method is developed and improved from a dynamic compaction method, and is an economic and rapid foundation treatment mode by the weak soil treatment process adopted by Menard company of France in the 80 s of the 20 th century. The dynamic compaction replacement method has the functions of compaction replacement, compaction consolidation and drainage consolidation to reinforce the soft foundation, and finally the broken stone pier composite foundation is formed. The dynamic compaction replacement pier has the advantages of obvious effect, simple equipment, convenient construction, wide application range, economy, easy operation, material saving and the like, and is quickly spread all over the world. However, in the deep soft and miscellaneous fill area, the depth of influence of dynamic compaction replacement is limited, and the formed composite foundation still has the possibility of generating larger settlement under the action of the upper embankment, so that the construction quality requirement of the highway can not be met. The structural form of the roadbed needs to be improved, the self weight of the backfill soil is controlled, and the post-highway settlement is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a roadbed structure with deep soft miscellaneous fill soil is handled to foam light soil is united in dynamic compaction replacement to solve above-mentioned problem.
The utility model provides a roadbed structure of dark soft miscellaneous fill-up is handled to dynamic compaction replacement joint foam light soil, include: pavement structures and foundation layers; the pavement structure is laid on the foundation layer; the foundation course includes a plurality of columnar stone piers and soil between the piers, the stone piers are evenly distributed along the horizontal plane, and the soil between the piers is filled in between the stone piers.
Preferably, a foam light soil layer is arranged between the pavement structure and the foundation layer, and the foam light soil layer is laid on the foundation layer.
Preferably, a gravel layer is arranged between the foam light soil layer and the foundation layer, and the gravel layer is laid on the foundation layer.
Preferably, the thickness of the crushed stone layer is 0.5 m.
Preferably, the stone pier comprises a plurality of first stone piers and a plurality of second stone piers, the first stone piers are distributed in a row at equal intervals in the horizontal direction and the vertical direction, and any one of the second stone piers is arranged between the adjacent four first stone piers.
Preferably, the device further comprises a settlement detection device, wherein the settlement detection device comprises a lifting plate, a connecting rope, a bracket, a first pulley, a second pulley, a spring, a cylindrical gear and a rack; the lifting plate is fixedly connected into the foundation bed, the lifting plate is horizontally arranged, the support is fixedly connected to the ground, the support is arranged far away from the foundation bed, the first pulley is rotatably connected to the support, the second pulley is rotatably connected to the support, the cylindrical gear is coaxially and fixedly connected to the second pulley, the rack is slidably connected to the support, the cylindrical gear and the rack are meshed with each other, the rack is provided with a scale value along the length direction of the rack, and the support is provided with a pointer pointing to the scale value; one end of the connecting rope is fixedly connected to the axial edge of the second pulley, the other end of the connecting rope is fixedly connected to the lifting plate, and the first pulley is wound between the two ends of the connecting rope; one end of the spring is connected to the second pulley, and the other end of the spring is fixedly connected to the support.
Preferably, the settlement detection device further comprises a corrugated pipe, one end of the corrugated pipe is connected to the lifting plate, the other end of the corrugated pipe is communicated with the ground, and the connecting rope penetrates through the corrugated pipe.
Preferably, the connection rope between the first pulley and the lifting plate is arranged in a vertical direction.
Preferably, a first bearing is connected between the first pulley and the bracket, and a second bearing is connected between the second pulley and the bracket.
The utility model has the advantages as follows: the foundation bearing layer formed by dynamic compaction replacement has high bearing capacity and strong deformation resistance, and can effectively reduce subgrade settlement.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a view of the overall structure of the embodiment of the present invention;
FIG. 2 is an arrangement view of a first sheet of stone piers and a second sheet of stone piers according to an embodiment of the present invention;
fig. 3 is a structural view of the settlement detecting device according to the embodiment of the present invention.
Wherein, 1, a pavement structure; 2. a ground layer; 3. soil between piers; 4. stone slab piers; 5. a foamed light soil layer; 6. a crushed stone layer; 7. a first stone pillar; 8. a second sheet of stone piers; 9. a lifting plate; 10. connecting ropes; 11. a support; 12. a first pulley; 13. a second pulley; 14. a spring; 15. a cylindrical gear; 16. a rack; 17. a scale value; 18. a pointer; 19. a bellows.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the 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 implicitly indicating 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.
According to fig. 1-3, the embodiment of the utility model provides a roadbed structure of dark soft miscellaneous fill soil of combined foam light soil processing is replaced to dynamic compaction, includes: a pavement structure 1 and a foundation layer 2; the pavement structure 1 is laid on the foundation layer 2; the foundation layer 2 comprises a plurality of columnar stone piers 4 and soil 3 among the piers, the stone piers 4 are uniformly distributed along the horizontal plane, and the soil 3 among the piers is filled among the stone piers 4;
the working principle of the technical scheme is as follows: during the construction of the highway, after the flat ground is cleaned, 1.5m stone layers are paved in the range of the roadbed and 12m outside the slope toe; the method comprises the following steps of (1) adopting high-energy-level dynamic compaction replacement treatment, enabling dynamic compaction to be carried out at 8000 kN.m, compacting to form uniformly distributed stone pillars 4, enabling the positions which are not compacted to be the inter-pillar soil 3, carrying out vibration compaction on a high-power road roller after dynamic compaction to form a foundation layer 2, and finally paving a pavement structure 1 on the foundation layer 2;
the beneficial effects of the above technical scheme are: the foundation bearing layer formed by dynamic compaction replacement has high bearing capacity and strong deformation resistance, and can effectively reduce subgrade settlement.
In one embodiment, a foamed lightweight soil layer 5 is arranged between the pavement structure 1 and the foundation layer 2, and the foamed lightweight soil layer 5 is laid on the foundation layer 2;
the working principle of the technical scheme is as follows: the foam light soil backfill material has high rigidity and small self weight, and reduces the additional stress of the lower foundation layer 2;
the beneficial effects of the above technical scheme are: the foam light soil backfill material can improve the height of a road surface under the condition of not increasing the thickness of the foundation layer 2, avoid overlarge quality of a roadbed and further reduce the settlement of the roadbed.
In one embodiment, a gravel layer 6 is arranged between the foamed light soil layer 5 and the ground base layer 2, and the gravel layer 6 is laid on the ground base layer 2;
the working principle of the technical scheme is as follows: backfilling a crushed stone layer 6 on the composite foundation formed by dynamic compaction replacement to serve as a cushion layer for dispersing stress;
the beneficial effects of the above technical scheme are: the pressure of the foundation layer 2 on the road surface is more uniform, and the subgrade settlement is further reduced.
In one embodiment, the thickness of the crushed stone layer 6 is 0.5 m.
In one embodiment, the sheet stone pier 4 comprises a plurality of first sheet stone piers 7 and a plurality of second sheet stone piers 8, the first sheet stone piers 7 are distributed in a row at equal intervals in the horizontal and vertical directions, and any one second sheet stone pier 8 is arranged between four adjacent first sheet stone piers 7;
the working principle of the technical scheme is as follows: the first sheet of stone piers 7 and the second sheet of stone piers 8 are arranged in an inserting manner, so that the proportion and the density of the sheet stone piers 4 in the foundation layer 2 can be improved;
the beneficial effects of the above technical scheme are: further improve the bearing capacity and the anti deformability of the foundation, and effectively reduce the subgrade settlement.
In one embodiment, the device further comprises a settlement detection device, wherein the settlement detection device comprises a lifting plate 9, a connecting rope 10, a bracket 11, a first pulley 12, a second pulley 13, a spring 14, a cylindrical gear 15 and a rack 16; the lifting plate 9 is fixedly connected in the foundation layer 2, the lifting plate 9 is horizontally arranged, the support 11 is fixedly connected to the ground, the support 11 is arranged away from the foundation layer 2, the first pulley 12 is rotatably connected to the support 11, the second pulley 13 is rotatably connected to the support 11, the cylindrical gear 15 is coaxially and fixedly connected to the second pulley 13, the rack 16 is slidably connected to the support 11, the cylindrical gear 15 and the rack 16 are meshed with each other, the rack 16 is provided with a scale value 17 along the length direction of the rack 16, and the support 11 is provided with a pointer 18 pointing to the scale value 17; one end of the connecting rope 10 is fixedly connected to the axial edge of the second pulley 13, the other end of the connecting rope 10 is fixedly connected to the lifting plate 9, and the two ends of the connecting rope 10 pass through the first pulley 12; one end of the spring 14 is connected to the second pulley 13, and the other end of the spring 14 is fixedly connected to the bracket 11;
the working principle of the technical scheme is as follows: in the highway construction process, when the foundation course 2 is settled, the foundation course 2 drives the lifting plate 9 to descend, the lifting plate 9 pulls one end of the connecting rope 10, the other end of the connecting rope 10 pulls the second pulley 13 to rotate, the second pulley 13 drives the cylindrical gear 15 to rotate, the cylindrical gear 15 drives the rack 16 to slide, and finally, the pointer 18 is used as a reference to observe the change of scales on the rack 16 to judge the settlement degree of the roadbed; the first pulley 12 plays a guiding role for the connecting rope 10, the spring 14 pulls the second pulley 13, and the second pulley 13 pulls the connecting rope 10 to enable the connecting rope 10 to be in a tensioning state;
the beneficial effects of the above technical scheme are: the concrete distance that foundation stratum 2 subsides can audio-visually be observed, whether foundation stratum 2 is qualified is judged through the distance that the low order layer subsides.
In one embodiment, the settlement detecting device further comprises a corrugated pipe 19, one end of the corrugated pipe 19 is connected to the lifting plate 9, the other end of the corrugated pipe 19 is communicated with the ground, and the connecting rope 10 passes through the corrugated pipe 19;
the working principle of the technical scheme is as follows: the corrugated pipe 19 plays a role in protecting the connecting rope 10;
the beneficial effects of the above technical scheme are: the connection rope 10 is prevented from being corroded by construction materials or soil, and the durability of the settlement detection device is improved.
In one embodiment, the connection cord 10 between the first pulley 12 and the lifting plate 9 is arranged in a vertical direction;
the working principle of the technical scheme is as follows: the moving direction of the lifting plate 9 is vertical;
the beneficial effects of the above technical scheme are: the movement direction of the lifting plate 9 is the same as the pulling direction of the connecting rope 10, so that the precision of the settlement detection device is improved.
In one embodiment, a first bearing is connected between the first pulley 12 and the bracket 11, and a second bearing is connected between the second pulley 13 and the bracket 11;
the working principle of the technical scheme is as follows: the first bearing reduces the friction between the first pulley 12 and the bracket 11, and the second bearing reduces the friction between the second pulley 13 and the bracket 11;
the beneficial effects of the above technical scheme are: the accuracy of the settlement detection device is improved.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. The utility model provides a roadbed structure of dark soft miscellaneous fill soil of foam light soil processing is united in dynamic compaction replacement which characterized in that includes: a pavement structure (1) and a foundation layer (2); the pavement structure (1) is laid on the foundation layer (2); foundation basement layer (2) include between a plurality of columnar piece stone mounds (4) and mound soil (3), piece stone mound (4) are along horizontal plane evenly distributed, between the mound soil (3) fill in between piece stone mound (4).
2. The roadbed structure of the deep soft miscellaneous fill processed by the dynamic compaction replacement combined foam light soil as claimed in claim 1, wherein a foam light soil layer (5) is arranged between the pavement structure (1) and the foundation layer (2), and the foam light soil layer (5) is laid on the foundation layer (2).
3. The roadbed structure of the deep soft miscellaneous fill processed by the dynamic compaction replacement combined foam light soil according to claim 2, wherein a gravel layer (6) is arranged between the foam light soil layer (5) and the foundation layer (2), and the gravel layer (6) is laid on the foundation layer (2).
4. The roadbed structure of the deep soft miscellaneous fill processed by the dynamic compaction replacement combined foam light soil of claim 3, wherein the thickness of the gravel layer (6) is 0.5 m.
5. The roadbed structure of the dynamic compaction replacement combined foam light soil treatment deep soft miscellaneous fill soil of claim 1, wherein the sheet stone mounds (4) comprise a plurality of first sheet stone mounds (7) and a plurality of second sheet stone mounds (8), the first sheet stone mounds (7) are arranged in a row at equal intervals in the horizontal and vertical directions, and any one second sheet stone mound (8) is arranged between adjacent four first sheet stone mounds (7).
6. The roadbed structure for treating deep soft miscellaneous fill soil by combining dynamic compaction and replacement with foam light soil according to claim 1, further comprising a settlement detection device, wherein the settlement detection device comprises a lifting plate (9), a connecting rope (10), a bracket (11), a first pulley (12), a second pulley (13), a spring (14), a cylindrical gear (15) and a rack (16); the lifting plate (9) is fixedly connected into the ground base layer (2), the lifting plate (9) is horizontally arranged, the support (11) is fixedly connected to the ground, the support (11) is far away from the ground base layer (2), the first pulley (12) is rotatably connected to the support (11), the second pulley (13) is rotatably connected to the support (11), the cylindrical gear (15) is coaxially and fixedly connected to the second pulley (13), the rack (16) is slidably connected to the support (11), the cylindrical gear (15) and the rack (16) are meshed with each other, the rack (16) is provided with a scale value (17) along the length direction of the rack (16), and the support (11) is provided with a pointer (18) pointing to the scale value (17); one end of the connecting rope (10) is fixedly connected to the axial edge of the second pulley (13), the other end of the connecting rope (10) is fixedly connected to the lifting plate (9), and the first pulley (12) is wound between the two ends of the connecting rope (10); one end of the spring (14) is connected to the second pulley (13), and the other end of the spring (14) is fixedly connected to the support (11).
7. The subgrade structure of the dynamic compaction replacement combined with the foam light soil treatment of the deep soft miscellaneous fill soil of claim 6, characterized in that the settlement detection device further comprises a corrugated pipe (19), one end of the corrugated pipe (19) is connected to the lifting plate (9), the other end of the corrugated pipe (19) is communicated with the ground, and the connecting rope (10) passes through the corrugated pipe (19).
8. The roadbed structure of deep soft miscellaneous fill processed by combining dynamic compaction and replacement with foam light soil according to claim 6, wherein the connecting rope (10) between the first pulley (12) and the lifting plate (9) is arranged along a vertical direction.
9. The roadbed structure of claim 6, wherein a first bearing is connected between the first pulley (12) and the support (11), and a second bearing is connected between the second pulley (13) and the support (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121027811.2U CN215104348U (en) | 2021-05-12 | 2021-05-12 | Roadbed structure for treating deep soft miscellaneous fill soil by combining dynamic compaction replacement with foam light soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121027811.2U CN215104348U (en) | 2021-05-12 | 2021-05-12 | Roadbed structure for treating deep soft miscellaneous fill soil by combining dynamic compaction replacement with foam light soil |
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| Publication Number | Publication Date |
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| CN215104348U true CN215104348U (en) | 2021-12-10 |
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|---|---|---|---|
| CN202121027811.2U Active CN215104348U (en) | 2021-05-12 | 2021-05-12 | Roadbed structure for treating deep soft miscellaneous fill soil by combining dynamic compaction replacement with foam light soil |
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| CN (1) | CN215104348U (en) |
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2021
- 2021-05-12 CN CN202121027811.2U patent/CN215104348U/en active Active
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