CN219653420U - A processing system for high soft roadbed that fills - Google Patents
A processing system for high soft roadbed that fills Download PDFInfo
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- CN219653420U CN219653420U CN202223255049.0U CN202223255049U CN219653420U CN 219653420 U CN219653420 U CN 219653420U CN 202223255049 U CN202223255049 U CN 202223255049U CN 219653420 U CN219653420 U CN 219653420U
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- 238000012545 processing Methods 0.000 title claims description 4
- 238000005056 compaction Methods 0.000 claims abstract description 48
- 238000010276 construction Methods 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 13
- 239000004575 stone Substances 0.000 claims description 58
- 239000004576 sand Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 15
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 14
- 238000005096 rolling process Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 239000002689 soil Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Road Paving Structures (AREA)
Abstract
The utility model belongs to the technical field of large-area high-fill in municipal administration, highways and the like, and particularly relates to a treatment system for a high-fill weak roadbed. The device comprises a supporting layer, a cushion layer, a dynamic compaction layer and a hydrophobic layer, wherein the supporting layer is arranged at the top of a silt soft foundation, the cushion layer is arranged at the top of the supporting layer, the dynamic compaction layer is arranged at the top of the cushion layer, the firmness of the system can be improved, and the hydrophobic supporting layer, the cushion layer and the dynamic compaction layer are hydrophobic layers on one side close to the water surface, so that accumulated water can be dredged. The utility model has the beneficial effect of better overall construction benefit. Because fewer operators are needed, the cost of centralized mass supply of materials is lower, the construction progress is faster, the cost is saved, and a plurality of comprehensive considerations can greatly save the project cost.
Description
Technical Field
The utility model belongs to the technical field of large-area high-fill in municipal administration, highways and the like, and particularly relates to a treatment system for a high-fill weak roadbed.
Background
At present, most of projects such as urban roads, national main roads, expressways and the like in China are still in the process of powerful pushing, but soft foundations such as coasts, lakes, frozen soil and the like are increasingly met in the construction process, and meanwhile, factors such as construction conditions in the north and south, raw materials and the like are considered, and according to a conventional construction mode, the construction period is long, the technical difficulty and the quality control difficulty are high, and the control of construction period, quality and cost cannot be well ensured.
For example, if the foundation pit is used in a fishpond or a high water level area, foundation pit side slope support is firstly carried out, meanwhile, excavation treatment is carried out, shrinkage is large after layered backfilling, cracking is easy, construction quality and safety guarantee are not facilitated due to long construction period, and engineering cost is high. And the simple use of the stone throwing and the siltation requires longer sedimentation and higher engineering cost, which is unfavorable for project progress.
Disclosure of Invention
In order to solve the technical problems, the utility model belongs to the technical field of large-area high-fill in municipal administration, highways and the like, and particularly relates to a treatment system for a high-fill soft roadbed.
The technical scheme adopted by the utility model is as follows: a processing system for soft roadbed of high fill sets up in silt soft foundation top, including supporting layer, pad layer, dynamic compaction layer and hydrophobic layer, its characterized in that:
the support layer is arranged at the top of the silt soft foundation and can prevent collapse of an upper roadbed;
the pad layer is arranged on the top of the supporting layer and can fill up gaps of the supporting layer;
the dynamic compaction layer is arranged at the top of the pad paving layer, and the supporting layer and the pad paving layer can be compacted through dynamic compaction construction;
the drainage layer is arranged on the support layer, the side edge of the pad paving layer, which is connected with the dynamic compaction, is positioned on one side of the pond, and can dredge accumulated water of the treatment system.
Further, the support layer is built by the sheet stone, and the sheet stone is built to enhance the support strength.
Further, the strength of the sheet stone against water immersion compression is not less than 20MPa.
Further, the total amount of the sheet stone size smaller than 30cm is smaller than 20% of the total sheet stone amount of the supporting layer, and the sheet stone size is not larger than 80cm.
Further, the pad layer is provided with a broken stone cushion layer, and the height of the broken stone cushion layer is set to be 10cm and can be used for filling gaps of the supporting layer.
Further, the middle sand cushion layer is arranged on the cushion layer, and the middle sand cushion layer is arranged between the broken stone cushion layer and the dynamic compaction layer and can fill gaps of the broken stone cushion layer.
Further, the dynamic compaction layer is formed by dynamic compaction of the mountain stones, so that the solid strength of the treatment system can be enhanced.
Further, the thickness of the dynamic compaction layer is 40cm.
Further, the hydrophobic layer is 1: 1.5.
The utility model has the advantages and positive effects that: by adopting the technical scheme, the materials are convenient to take on the spot, and the stones and the mountain stones in most areas are rich because China belongs to hilly terrains of mountains and hills, so that the materials are convenient to take on the spot and purchase in a concentrated way, and the materials are not easy to limit, so that the price of the materials is increased and the feeding is difficult; because the bottom layer adopts large rubble stones and small particle diameter rubble caulking joints are formed in the process, the structure mode is simple, the stability is good, and meanwhile, the influence of freeze thawing and water level change on a road bed part can be greatly reduced; the upper layer adopts the mountain stone layered dynamic compaction, so that the stability is also ensured, and the working procedure is simpler, the construction progress is faster, and the construction paragraphs of the assault part can be concentrated; the 25kj impact road roller is adopted to achieve a better dynamic compaction effect, particularly faces to the construction working surface, and is generally far away from residential areas, so that the influence of vibration and noise is minimized, meanwhile, the construction working surface is large, the efficiency can be better improved, the action depth is enough, and the lower road bed can be tamped in a non-strong manner; the overall construction benefit is better. Because fewer operators are needed, the cost of centralized mass supply of materials is lower, the construction progress is faster, the cost is saved, and a plurality of comprehensive considerations can greatly save the project cost.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
in the figure:
1. a silt soft foundation bottom 2, a normal water level 3 and a supporting layer
4. First mat layer 5, second mat layer 6, fence
7. Dynamic compaction layer 8, top dynamic compaction layer 9 and drainage slope
Detailed Description
The objects, technical solutions and advantages of the present utility model will become more apparent by the following detailed description of the present utility model with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In the following description, descriptions of techniques of a well-known structure are omitted so as not to unnecessarily obscure the concept of the present utility model.
Embodiments of the present utility model are described below with reference to the accompanying drawings.
In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and to simplify the description, and are not indicative or implying that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model. In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
As shown in fig. 1, a treatment system for a high-fill soft roadbed is arranged on a sludge soft foundation bottom 1 and a normal water level 2, and comprises a supporting layer 3, a first cushion layer 4, a second cushion layer 5, a fence 6, a dynamic compaction layer 7, a top dynamic compaction layer 8 and a hydrophobic side slope 9, wherein the supporting layer 3 is arranged on the sludge soft foundation bottom 1 and the normal water level 2, the cushion layer is arranged on the supporting layer 3, the cushion layer comprises the first cushion layer 4 and the second cushion layer 5, the dynamic compaction layer is arranged on the cushion layer, and particularly is arranged on the second cushion layer 5, the top dynamic compaction layer 8 is arranged on the top of the dynamic compaction layer 7, the supporting layer 3, the cushion layer and the dynamic compaction layer are connected on the same side and are positioned on the water surface side, and the hydrophobic layer is arranged, and in this embodiment, the hydrophobic side slope 9 is arranged.
Preferably, in the present embodiment, the supporting layer 3 is built by the sheet stones, and the sheet stones have a water-intrusion resistance of not less than 20MPa, the total amount of the sheet stone sizes of less than 30cm is less than 20% of the total sheet stone number of the supporting layer 3, and all the sheet stone sizes are not more than 80cm.
Preferably, the first mattress layer 4 is provided with a gravel cushion layer, the height of the gravel cushion layer is set to 10cm, the second mattress layer 5 is a middle sand cushion layer, the second mattress layer 5 is arranged between the first mattress layer 4 and the dynamic compaction layer 7, a gravel gap in the first mattress layer 4 can be filled, the middle sand cushion layer of the second mattress layer 5 is matched with the gravel cushion layer of the fourth mattress layer 4, the mattress layer is wholly compact and smooth, and the method is suitable for dynamic compaction construction of the dynamic compaction layer 7 at the top.
Preferably, the dynamic compaction layer 7 is formed by mountain stones, the thickness of the dynamic compaction layer is 40cm, and the treatment system of the embodiment is firm and not easy to collapse through dynamic compaction construction; the dynamic compaction layer 7, the pad layer and one side of the supporting layer 3, which is close to the water surface, are integrally made into a hydrophobic side slope 9 by a side slope of 1:1.5, and a fence 6 is arranged on the slope of the hydrophobic side slope 9, and the fence 6 can prevent broken stones from sliding to the water bottom and protect personnel safety, and the hydrophobic side slope 9 can dredge accumulated water.
Example 2:
this embodiment proposes different preparation for construction, construction methods and application ranges in combination with the different construction environments described in embodiment 1.
Firstly, the construction should be carried out in a dead water period or avoid a rainy season as much as possible.
Before the construction process, the surrounding channels, the water system, the underground pipe network, the water system, the national defense optical cable and the like are correspondingly inspected, and meanwhile, the parts such as the weak roadbed, the pond and the like are measured and explored, so that the material supply and the use specification are ensured.
The rubble with certain reserve is piled up near the site, the rubble needs to be sampled for test before being transported to the site, the compressive strength in water is not less than 20MPa, and the total amount of the rubble with the size of less than 30cm is less than 20%.
Meanwhile, the source of the mountain skin stone should be determined outside the field, and a certain reserve amount is required, the maximum particle size of the mountain skin stone is not more than 20cm, and the mud content is lower than 25%. Wherein the mass of the grain diameter of 2-20 cm is more than 50% of the total mass, the non-uniformity coefficient Cu is more than or equal to 5, the solid volume rate after the first layer punching is more than or equal to 83%, and the solid volume rate after the final punching is more than or equal to 90%.
And after all the materials are ready for working, the rubble can be thrown and filled. When the soft soil stratum is relatively flat, the mountain pushing and the excavator are matched to form isosceles triangle forward to be filled, and the soft soil stratum is gradually symmetrically filled to the full width to enable the mud biogas or the soft soil to be extruded to the two sides. If the area of the soft foundation of the fish pond or the silt is smaller, water pumping or silt cleaning and other works can be carried out in the stone throwing process. When the transverse slope of the soft soil layer is steeper than 1: and 10, throwing from the high side to the low side, properly throwing and filling at the low side part, enabling the low side part to have a platform top surface of about 1-2m, filling small stones to be leveled after the rubble is thrown out of a soft soil surface or a water surface by 0.5-1 m, and compacting by a heavy road roller until the rubble is stable. Whether the road roller is stable or not can be judged according to whether the rolling rebound phenomenon or sinking occurs when the road roller rolls, and if not, the road roller is regarded as that the filled rubble is rolled to a stable state. And after the stone polishing and silting are completed and experience is collected, the construction of the geosynthetic material treatment layer is carried out. Firstly, paving broken stone with the thickness of 10cm and sand with the thickness of 10cm on the surface of the laminated and stabilized sheet stone, paving a geotechnical barrier after compaction, and filling a roadbed. The geogrid is connected into a whole by adopting methods such as nylon rope seaming or U-shaped nail connection, and the like, a layer of geogrid is paved and then filled in time, at the moment, the filler cannot be directly discharged on the geogrid, and the filler must be discharged on a paved road surface, and is filled according to the principle of 'two sides first and then the middle'. The construction of the lower structure is completed.
The upper part is filled with the mountain skin stone, the data are obtained according to the test section, each layer of paving thickness is 40cm, the coefficient of the optimal pine is 1.3, the 20t vibration road roller is adopted for initial compaction after the pine is finished, when the compaction is preliminary under the condition of dynamic compaction, the 25kj impact road roller is adopted for dynamic compaction, the vehicle speed is controlled at 10-15km/h, rolling is finished when one round of stamping has no settlement, and the solid volume rate of the mountain skin stone cushion layer after the first layer of stamping is not less than 83%. The test result of the foundation reaction modulus after rolling can reach the use requirement (60 MN/m) 3 ) As the action depth of the 25kj impact roller can reach 5m, the foundation reaction modulus is increased along with the increase of the thickness of the structural layer, and the solid volume rate is also increased continuously at least more than 90 percent.
When the construction is carried out to the last layer, the maximum particle size of the mountain leather stone is required to be strictly controlled, in the rolling process, the slicing area is required to be finely leveled twice by adopting an excavator and matching with manual work, and finally, when the height error is not more than 1cm, the three-steel-wheel road roller is adopted to carry out static pressure for 2-3 times at 1.5-1.7 km/h. Meanwhile, the corresponding health-preserving procedure is carried out after the construction of each layer is completed.
As in figure 1
And (3) performing stone throwing and siltation on the lake and the soft foundation roadbed according to the measuring boundary, wherein the lower layer adopts large stones and is optimal in stone flakes, and meanwhile, the stone throwing amount is compared with the measured exploration data to ensure that the data are corresponding and consistent. Filling rubble to water surface or silt soft foundation beyond 1.0m, pointing with small-particle-size broken stone, repeatedly rolling with vibratory roller, laying 10cm thick broken stone cushion layer and 10cm medium sand after no obvious change and sedimentation, dynamic compaction with 25kj impact roller, and sprinkling water for maintenance. And after the settlement data of the test section are reached, the subsequent geogrid installation work is carried out, and the geogrid is manually pulled open and tensioned along the reinforcing direction, so that smoothness, no folds and continuity are ensured.
Meanwhile, according to the slope release requirement, the top of the rubble needs to be provided with a step which is larger than or equal to 1m and the direction of the rubble is inclined inwards by 3 percent.
According to the test section, relevant construction data are obtained, 25kj impact rammers are adopted for rolling, the thickness of each layer of paving is 40cm, the coefficient of 1.3 is adopted after comprehensive evaluation of the coefficient of the Phaseis, the gradient of each layer of paving is controlled to be 2%, and the maintenance and drainage requirements can be met simultaneously. And the dynamic compaction variable is determined according to experimental data, the superposition rate of the track mark is more than 50%, the next working procedure can be carried out until no obvious track mark exists and the solid volume rate after stamping is more than 90%, and the repeated compaction is carried out on the mountain leather stone after rainfall so as to ensure the construction quality.
The final layer of mountain skin stone is subjected to fine leveling once and finishing for 2 times, after finishing compaction for the first time is finished, the mountain skin stone is manually matched with an excavator to carry out digging and filling, but thin layer pasting is not needed, the whole piece of digging and filling fine materials are needed to be removed, dynamic compaction is carried out on the mountain skin stone after finishing leveling for 2 times, and finally, a three-steel-wheel road roller is adopted to carry out light harvesting and rolling on the surface, wherein rolling variable number is 2-3 times.
Meanwhile, the side slope is brushed along with the pressure in the construction process, grass seeds are spread as early as possible, and the whole road is preferably drained in an organized way.
The utility model has the advantages and positive effects that: by adopting the technical scheme, the materials are convenient to take on the spot, and the stones and the mountain stones in most areas are rich because China belongs to hilly terrains of mountains and hills, so that the materials are convenient to take on the spot and purchase in a concentrated way, and the materials are not easy to limit, so that the price of the materials is increased and the feeding is difficult; because the bottom layer adopts large rubble stones and small particle diameter rubble caulking joints are formed in the process, the structure mode is simple, the stability is good, and meanwhile, the influence of freeze thawing and water level change on a road bed part can be greatly reduced; the upper layer adopts the mountain stone layered dynamic compaction, so that the stability is also ensured, and the working procedure is simpler, the construction progress is faster, and the construction paragraphs of the assault part can be concentrated; the 25kj impact road roller is adopted to achieve a better dynamic compaction effect, particularly faces to the construction working surface, and is generally far away from residential areas, so that the influence of vibration and noise is minimized, meanwhile, the construction working surface is large, the efficiency can be better improved, the action depth is enough, and the lower road bed can be tamped in a non-strong manner; the overall construction benefit is better. Because fewer operators are needed, the cost of centralized mass supply of materials is lower, the construction progress is faster, the cost is saved, and a plurality of comprehensive considerations can greatly save the project cost.
The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.
Claims (9)
1. A processing system for soft roadbed of high fill sets up in silt soft foundation top, including supporting layer, pad layer, dynamic compaction layer and hydrophobic layer, its characterized in that:
the support layer is arranged at the top of the silt soft foundation and can prevent collapse of an upper roadbed;
the pad layer is arranged on the top of the supporting layer and can fill up gaps of the supporting layer;
the dynamic compaction layer is arranged at the top of the pad paving layer, and the supporting layer and the pad paving layer can be compacted through dynamic compaction construction;
the drainage layer is arranged on the support layer, the side edge of the pad paving layer, which is connected with the dynamic compaction, is positioned on one side of the pond, and can dredge accumulated water of the treatment system.
2. A treatment system for high fill weak subgrade according to claim 1, characterized in that: the supporting layer is built by the sheet stone, and the supporting strength can be enhanced by the sheet stone.
3. A treatment system for high fill weak subgrade according to claim 2, characterized in that: the immersed compression strength of the sheet stone is not less than 20MPa.
4. A treatment system for high fill weak subgrade according to claim 2 or 3, characterized in that: the total amount of the sheet stone size smaller than 30cm is smaller than 20% of the total sheet stone amount of the supporting layer, and the sheet stone size is not larger than 80cm.
5. A treatment system for high fill weak subgrade according to claim 1, characterized in that: the pad layer is provided with a broken stone cushion layer, and the height of the broken stone cushion layer is set to be 10cm and can be used for filling gaps of the supporting layer.
6. A treatment system for high fill weak subgrade according to claim 5, characterized in that: the sand-filled pavement is characterized in that the middle sand cushion layer is arranged between the broken stone cushion layer and the dynamic compaction layer, and can fill up gaps of the broken stone cushion layer.
7. A treatment system for high fill weak subgrade according to claim 1, characterized in that: the dynamic compaction layer is formed by dynamic compaction of mountain stones, so that the solid strength of the treatment system can be enhanced.
8. A treatment system for high fill weak subgrade according to claim 7, characterized in that: the thickness of the dynamic compaction layer is 40cm.
9. A treatment system for high fill weak subgrade according to claim 1, characterized in that: the hydrophobic layer is 1: 1.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223255049.0U CN219653420U (en) | 2022-11-29 | 2022-11-29 | A processing system for high soft roadbed that fills |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223255049.0U CN219653420U (en) | 2022-11-29 | 2022-11-29 | A processing system for high soft roadbed that fills |
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| CN219653420U true CN219653420U (en) | 2023-09-08 |
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| CN202223255049.0U Active CN219653420U (en) | 2022-11-29 | 2022-11-29 | A processing system for high soft roadbed that fills |
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| Country | Link |
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