CN211816174U - Foundation structure for foundation treatment in severe collapsible loess region - Google Patents
Foundation structure for foundation treatment in severe collapsible loess region Download PDFInfo
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- CN211816174U CN211816174U CN201922226103.0U CN201922226103U CN211816174U CN 211816174 U CN211816174 U CN 211816174U CN 201922226103 U CN201922226103 U CN 201922226103U CN 211816174 U CN211816174 U CN 211816174U
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- 239000002689 soil Substances 0.000 claims abstract description 71
- 239000004568 cement Substances 0.000 claims description 19
- 238000005056 compaction Methods 0.000 claims description 19
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 235000013311 vegetables Nutrition 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 8
- 238000011065 in-situ storage Methods 0.000 abstract description 4
- 238000012856 packing Methods 0.000 abstract description 2
- 239000004575 stone Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000003181 Panax pseudoginseng Nutrition 0.000 description 1
- 244000131316 Panax pseudoginseng Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a foundation structure of serious collapsible loess area ground processing, including loess layer, crowded dense stake hole has been seted up at loess layer's top, and crowded dense stake downthehole packing has the filling layer, and plain soil layer has been laid at loess layer's top, and grey soil layer has been laid at plain soil layer's top, and a plurality of reinforcing bars have been laid at grey soil layer's top, and concrete layer has been laid at grey soil layer's top, and a plurality of reinforcing bars all are located the concrete in situ, and a plurality of concrete columns have been laid at concrete layer's top, and a plurality of concrete columns are equidistant array and arrange, and backfill layer has been laid at concrete layer's top, and a plurality of concrete columns all are located the backfill in situ, and the metalling has been laid at backfill layer's top. The utility model relates to a rationally, improved foundation structure's steadiness and security performance, improved foundation structure's bearing capacity and intensity, great reduction the collapsibility of loess area ground, the settlement alleviates greatly, has improved the life of ground, and the practicality is strong.
Description
Technical Field
The utility model relates to a foundation treatment technical field specifically is a foundation structure of severe collapsible loess area foundation treatment.
Background
Collapsible loess is a kind of loess, and after being soaked in water under certain pressure, the collapsible loess has the characteristics that the structure of the soil is rapidly destroyed, the collapsible deformation is obvious, the strength is reduced, the collapsible characteristic of the collapsible loess foundation is called collapsible loess, the structural objects are harmed in different degrees, the structural objects are greatly settled, cracked and inclined, and the safety and the use of the structural objects are even seriously influenced, when building bridges and culverts and other structures in loess areas, reliable judgment method and comprehensive understanding are provided for collapsible loess foundation, and adopting correct engineering measures to prevent or eliminate the collapsibility of the soil, wherein the process is called collapsibility loess foundation treatment, and the collapsibility loess foundation treatment aims to improve the property and the structure of the soil, reduce the water permeability and the compressibility of the soil, control the collapsibility of the soil and partially or completely eliminate the collapsibility of the soil.
However, in the prior art, the conventional foundation treatment foundation structure is not suitable for the severe collapsible loess region, the loess collapsible treatment effect is poor, the bearing strength is low, the stability of the foundation treatment is poor, and certain potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Not enough to prior art, the utility model provides a serious collapsible loess area foundation treatment's foundation structure, the problem of having solved.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a foundation structure that severe collapsible loess area ground was handled, including loess layer, crowded dense stake hole has been seted up at loess layer's top, crowded dense stake downthehole packing has the filling layer, plain soil layer has been laid at loess layer's top, grey soil layer has been laid at plain soil layer's top, a plurality of reinforcing bars have been laid at grey soil layer's top, concrete layer has been laid at grey soil layer's top, a plurality of reinforcing bars all are located the concrete in situ, a plurality of concrete columns have been laid at concrete layer's top, a plurality of concrete columns are equidistant array and arrange, backfill soil layer has been laid at concrete layer's top, a plurality of concrete columns all are located backfill soil in situ, the metalling has been laid at backfill soil layer's top, the cement layer has been laid at the top of metalling, a plurality of kerf slots have been seted up to the top of.
Preferably, the number of compaction pile holes is a plurality of, and a plurality of compaction pile holes are equidistant array and arrange, and the number of filling layer is a plurality of, and a plurality of filling layers are located corresponding compaction pile hole respectively.
Preferably, the vegetable soil layer is made of cohesive soil materials.
Preferably, the plurality of reinforcing steel bars are arranged in an equidistant grid shape.
(III) advantageous effects
The utility model provides a foundation structure of severe collapsible loess area ground processing. The method has the following beneficial effects:
the foundation structure for the foundation treatment in the severely collapsible loess area forms the compaction piles by utilizing the plurality of compaction pile holes and the plurality of filling layers, the compaction piles are formed by arranging the plurality of compaction pile holes at the top of the loess layer, the original loess at the positions of the compaction pile holes is forced to be extruded laterally, the compactness of the loess layer in a certain range of the compaction piles is improved, the density of soil among the piles becomes uniform, the hardness degree of the loess layer is improved, the collapsibility of the loess layer is greatly reduced, the bearing capacity of the loess layer is improved by laying the plain soil layer and the grey soil layer, the solidification effect of a soil body is improved, the strength of the soil body is gradually increased, the collapsibility is eliminated, the sedimentation uniformity and the sedimentation amount are reduced, the compressive strength of the concrete layer is greatly improved by binding the plurality of reinforcing steel bars in a net-shaped three-dimensional shape, the seismic hardness of the concrete layer is improved, the hardness and the deformation resistance of the backfill layer are improved by utilizing the plurality of concrete columns, utilize rubble layer and cement layer further to have strengthened bearing capacity and hard strength, through set up a plurality of kerf slots on cement layer surface, prevent that the cement layer from causing the cement layer fracture under the condition of expend with heat and contract with cold to improved foundation structure's steadiness and security performance, improved foundation structure's bearing capacity and intensity.
Drawings
FIG. 1 is a schematic sectional view of the main view of the present invention;
fig. 2 is a schematic top view of the arrangement of the reinforcing bars.
In the figure: 1. a loess layer; 2. pile holes are compacted; 3. a filling layer; 4. a plain soil layer; 5. a grey soil layer; 6. reinforcing steel bars; 7. a concrete layer; 8. a concrete column; 9. backfilling the soil layer; 10. a crushed stone layer; 11. a cement layer; 12. And (5) cutting a slit groove.
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 work belong to the protection scope of the present invention.
As shown in fig. 1-2, the utility model provides a technical solution: the utility model provides a foundation structure that severe collapsible loess area ground was handled, including loess layer 1, crowded dense stake hole 2 has been seted up at loess layer 1's top, crowded dense stake hole 2 intussuseption is filled with filling layer 3, plain soil layer 4 has been laid at loess layer 1's top, grey soil layer 5 has been laid at plain soil layer 4's top, a plurality of reinforcing bars 6 have been laid at grey soil layer 5's top, concrete layer 7 has been laid at grey soil layer 5's top, a plurality of reinforcing bars 6 all are located concrete layer 7, a plurality of concrete columns 8 have been laid at concrete layer 7's top, a plurality of concrete columns 8 are equidistant array and arrange, backfill soil layer 9 has been laid at concrete layer 7's top, a plurality of concrete columns 8 all are located backfill soil layer 9, gravel layer 10 has been laid at backfill soil layer 9's top, cement layer 11 has been laid at the top of gravel layer 10, a plurality of kerf slots 12 have been seted up at equidistant at cement layer 11's top.
The quantity of crowded close stake hole 2 is a plurality of, and a plurality of crowded close stake holes 2 are equidistant array and arrange, and the quantity of filling layer 3 is a plurality of, and a plurality of filling layers 3 are located corresponding crowded close stake hole 2 respectively, and plain soil layer 4 comprises stickness soil material, and a plurality of reinforcing bars 6 are equidistant latticed and arrange.
The working principle is as follows: the method comprises the steps of driving a plurality of cylindrical steel pile pipes into a loess layer 1, then sequentially pulling out the cylindrical steel pile pipes to form compaction pile holes 2, then injecting lime and fly ash mixed materials into the compaction pile holes 2 for tamping, tamping the lime and the fly ash to form a filling layer 3, matching the compaction pile holes 2 with the filling layers 3 to form compaction piles, forming a plurality of compaction pile holes 2 at the top of the loess layer 1, forcibly laterally extruding the original loess at the positions of the compaction pile holes 2 to improve the compactness of the loess layer 1 within a certain range of the compaction piles, enabling the density of the soil among the piles to be uniform, improving the hardness degree of the loess layer 1, greatly reducing the collapsibility of the loess layer 1, laying a certain amount of cohesive soil at the top of the loess layer 1 and tamping to form a plain soil layer 4, uniformly mixing the lime and the pseudo-ginseng soil in a certain proportion and then laying the top of the plain soil layer 4, forming a gray soil layer 5, improving the bearing capacity of a loess layer 1 by laying a plain soil layer 4 and the gray soil layer 5, improving the solidification effect of a soil body, gradually increasing the strength of the soil body, eliminating the wet sinking, uniformly settling and reducing the settling amount, binding a plurality of reinforcing steel bars 6 into a net three-dimensional shape, fixing the plurality of reinforcing steel bars 6 on the top of the gray soil layer 5, pouring concrete on the bound reinforcing steel bars 6, solidifying to form a concrete layer 7, binding the plurality of reinforcing steel bars 6 into the net three-dimensional shape to greatly improve the compressive shock resistance strength of the concrete layer 7, improving the hardness of the concrete layer 7, fixedly laying a plurality of concrete columns 8 on the concrete layer 7, laying a proper amount of soil for backfilling and tamping, filling a plurality of concrete columns 8 in the tamped soil to form a backfill soil layer 9, improving the hard strength and the deformation resistance strength of the backfill soil layer 9 by using the plurality of concrete columns 8, the method comprises the steps of paving a proper amount of stone and broken brick mixed materials on the top of a backfill soil layer 9, tamping the stone and broken brick mixed materials to form a broken stone layer 10, paving cement on the top of the broken stone layer 10 to form a cement layer 11, further enhancing the bearing capacity and the hard strength by utilizing the broken stone layer 10 and the cement layer 11, and preventing the cement layer 11 from cracking under the conditions of thermal expansion and cold contraction by forming a plurality of slit grooves 12 on the surface of the cement layer 11, wherein the contents which are not described in detail in the specification belong to the prior art which is well known by persons skilled in the art.
To sum up, the foundation structure for the foundation treatment in the severely collapsible loess region forms the compacted piles by utilizing the plurality of compacted pile holes 2 and the plurality of filling layers 3, the plurality of compacted pile holes 2 are arranged at the top of the loess layer 1, so that the original loess at the positions of the compacted pile holes 2 is forced to be extruded laterally, the compactness of the loess layer 1 in a certain range of the compacted piles is improved, the density of the soil among the piles is uniform, the hardness degree of the loess layer 1 is improved, the collapsible property of the loess layer 1 is greatly reduced, the bearing capacity of the loess layer 1 is improved by laying the plain soil layer 4 and the grey soil layer 5, the solidification effect of the soil is improved, the soil is gradually strengthened, the collapsible property is eliminated, the sedimentation uniformity and the sedimentation amount are reduced, the anti-seismic strength of the concrete layer 7 is greatly improved by utilizing the plurality of reinforcing steel bars 6 to be bound into a net-shaped three-dimensional shape, the hardness of the concrete layer 7 is improved, utilize a plurality of concrete columns 8 to improve the hard strength and the anti deformation strength of backfill soil layer 9, utilize metalling 10 and cement layer 11 to further strengthen bearing capacity and hard strength, through set up a plurality of kerf slots 12 on cement layer 11 surface, prevent that cement layer 11 from causing cement layer 11 to split under the condition of expend with heat and contract with cold, the utility model relates to a rationally, improved the steadiness and the security performance of foundation structure, improved the bearing capacity and the intensity of foundation structure, great reduction the collapsible nature of loess area ground, the settlement volume alleviates greatly, has improved the life of ground, and the practicality is strong.
Claims (4)
1. The utility model provides a foundation structure of severe collapsible loess area ground processing, includes loess layer (1), its characterized in that: the top of the loess layer (1) is provided with an extruded pile hole (2), a filling layer (3) is filled in the extruded pile hole (2), the top of the loess layer (1) is laid on a plain soil layer (4), the top of the plain soil layer (4) is laid with a gray soil layer (5), the top of the gray soil layer (5) is laid with a plurality of steel bars (6), the top of the gray soil layer (5) is laid with a concrete layer (7), the plurality of steel bars (6) are all positioned in the concrete layer (7), the top of the concrete layer (7) is laid with a plurality of concrete columns (8), the plurality of concrete columns (8) are arranged in an equidistant array, the top of the concrete layer (7) is laid with a backfill soil layer (9), the plurality of concrete columns (8) are all positioned in the backfill soil layer (9), the top of the backfill soil layer (9) is laid with a gravel layer (10), and the top of the gravel layer (11) is laid with a cement layer (11), the top of the cement layer (11) is provided with a plurality of slit grooves (12) at equal intervals.
2. The foundation structure for the treatment of the severe collapsible loess area ground according to claim 1, wherein: the quantity of compaction stake hole (2) is a plurality of, and a plurality of compaction stake holes (2) are equidistant array and arrange, and the quantity of filling layer (3) is a plurality of, and a plurality of filling layer (3) are located corresponding compaction stake hole (2) respectively.
3. The foundation structure for the treatment of the severe collapsible loess area ground according to claim 1, wherein: the vegetable soil layer (4) is made of cohesive soil materials.
4. The foundation structure for the treatment of the severe collapsible loess area ground according to claim 1, wherein: the reinforcing steel bars (6) are arranged in an equidistant grid shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922226103.0U CN211816174U (en) | 2019-12-12 | 2019-12-12 | Foundation structure for foundation treatment in severe collapsible loess region |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922226103.0U CN211816174U (en) | 2019-12-12 | 2019-12-12 | Foundation structure for foundation treatment in severe collapsible loess region |
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| CN211816174U true CN211816174U (en) | 2020-10-30 |
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| CN201922226103.0U Expired - Fee Related CN211816174U (en) | 2019-12-12 | 2019-12-12 | Foundation structure for foundation treatment in severe collapsible loess region |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411578A (en) * | 2020-11-04 | 2021-02-26 | 苏州市八都建筑有限公司 | Plain-fill retaining wall under soft soil foundation and construction method thereof |
| CN114250760A (en) * | 2022-01-27 | 2022-03-29 | 山西机械化建设集团有限公司 | High-kinetic-energy ramming and expanding stone pier of prestressed pipe pile and plain soil compaction foundation reinforcing method |
| CN114457781A (en) * | 2022-01-26 | 2022-05-10 | 西安建筑科技大学 | Salinized soil foundation reinforcement structure |
| CN115012386A (en) * | 2022-06-23 | 2022-09-06 | 中化地质河南局集团有限公司 | Improvement method for weakening foundation loess collapsibility |
-
2019
- 2019-12-12 CN CN201922226103.0U patent/CN211816174U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411578A (en) * | 2020-11-04 | 2021-02-26 | 苏州市八都建筑有限公司 | Plain-fill retaining wall under soft soil foundation and construction method thereof |
| CN114457781A (en) * | 2022-01-26 | 2022-05-10 | 西安建筑科技大学 | Salinized soil foundation reinforcement structure |
| CN114457781B (en) * | 2022-01-26 | 2023-11-03 | 西安建筑科技大学 | Saline soil foundation reinforcing structure |
| CN114250760A (en) * | 2022-01-27 | 2022-03-29 | 山西机械化建设集团有限公司 | High-kinetic-energy ramming and expanding stone pier of prestressed pipe pile and plain soil compaction foundation reinforcing method |
| CN114250760B (en) * | 2022-01-27 | 2024-01-26 | 山西机械化建设集团有限公司 | High-kinetic-energy ramming and expanding broken stone pier and plain soil compaction foundation reinforcement method for prestressed pipe piles |
| CN115012386A (en) * | 2022-06-23 | 2022-09-06 | 中化地质河南局集团有限公司 | Improvement method for weakening foundation loess collapsibility |
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Granted publication date: 20201030 |