CN214573877U - Silt and soft soil foundation normal position solidification foundation structure - Google Patents
Silt and soft soil foundation normal position solidification foundation structure Download PDFInfo
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- CN214573877U CN214573877U CN202120423725.7U CN202120423725U CN214573877U CN 214573877 U CN214573877 U CN 214573877U CN 202120423725 U CN202120423725 U CN 202120423725U CN 214573877 U CN214573877 U CN 214573877U
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- soft soil
- silt
- cement
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- 239000002689 soil Substances 0.000 title claims abstract description 64
- 238000007711 solidification Methods 0.000 title claims abstract description 17
- 230000008023 solidification Effects 0.000 title claims abstract description 17
- 239000004568 cement Substances 0.000 claims abstract description 36
- 239000004576 sand Substances 0.000 claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 238000011065 in-situ storage Methods 0.000 claims abstract description 13
- 239000010802 sludge Substances 0.000 claims abstract description 13
- 239000011150 reinforced concrete Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 abstract description 20
- 230000001681 protective effect Effects 0.000 abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 238000007596 consolidation process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000001125 extrusion Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 208000034189 Sclerosis Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a silt and soft soil foundation normal position solidification foundation structure belongs to ground processing technology field, including silt layer and cement stirring stake, silt layer upper end is soft soil layer, be provided with cement stirring stake in soft soil layer and the silt layer, the cement stirring stake outside is provided with the protection casing, be provided with the connecting plate on the protection casing, be provided with a plurality of long screw on the connecting plate. The utility model has the advantages that the curing agent and the cement are added into the sludge and the soft soil for stirring, the in-situ solidification is realized, the utilization rate of the original soil is maximized, and the protective cover is added at the stirring position, so that the lateral extrusion of the foundation is less during the stirring, and the influence on the original structure around is less; set up the sand cushion layer above soft soil layer, can play the effect of drainage to guaranteed the smooth discharge of space water in the foundation under the effect of the fill load, accelerated the consolidation of foundation promptly and still protected the foundation to avoid the space water to soak.
Description
Technical Field
The utility model relates to a ground treatment technical field especially relates to a silt and soft soil foundation normal position solidification foundation structure.
Background
The soft soil is fine soil deposited on coastal, lake and marsh, valley and river beaches and has the characteristics of high natural water content, large natural pore ratio, high compressibility, low shear strength, small consolidation coefficient, long consolidation time, high sensitivity, high disturbance, poor water permeability, complex soil layer distribution, large difference of physical and mechanical properties among layers and the like. Because the soft soil has low strength and large sinking and hiding amount, great harm is often brought to road engineering, and if the treatment is improper, great influence is caused to the construction and the use of a road.
Patent No. CN208183722U discloses a silt and soft soil foundation normal position solidification foundation structure, including the sclerosis layer that top-down set gradually, solidified layer and silt layer, wherein the thickness of solidified layer is 0.5-8m, and solidified layer is the plate body structure, the utility model discloses a solidified layer is through adopting the plate body structure, can improve the ground bearing capacity, and can regard as the highway, railway roadbed basic unit, construction land, harbour, pier dump, application such as farming land used to can play the diffusion effect by a wide margin to the pressure on ground upper portion, thereby can reduce superstructure's subsidence, can also reduce holistic deformation simultaneously, reduce the thickness on road bed sclerosis layer, reduce construction cost, reduce the damage of sea reclamation to mountain body and natural environment, have extensive suitability.
The sludge and soft soil foundation in-situ solidification foundation structure in the prior art has the following defects: 1. the hardened layer comprises a lime soil layer, a gravel layer, an inorganic material layer and a concrete layer, the main components of the lime soil layer are lime and clay, although the strength is higher, the bottom of the foundation trench needs to be rammed once before the lime soil is placed in the foundation trench, and the bottom of the foundation trench needs to be covered in time after ramming is finished, so that the sun and rain are prevented, and a certain amount of engineering is increased; 2. although the solidified layer is formed by adding powdery curing agent or liquid curing agent in situ and adding cement and stirring in situ, the solidified layer is firmer, but the sludge layer below the solidified layer is not reinforced, and the sludge can generate uneven settlement, so that cracks and inclination are generated in the building to influence normal use, thereby being not beneficial to the firmness of the foundation.
SUMMERY OF THE UTILITY MODEL
The utility model provides a silt and soft soil foundation normal position solidification foundation structure, utilize to add curing agent and cement stirring in silt and soft soil, it is the normal position solidification, the utilization ratio original soil of furthest, and increased the protection casing in the stirring department, therefore less make the foundation side direction extrude during the stirring, so the influence to original structure around is less; set up the sand cushion layer above soft soil layer, can play the effect of drainage to guaranteed the smooth discharge of space water in the foundation under the effect of the fill load, accelerated the consolidation of foundation promptly and still protected the foundation to avoid the space water to soak.
The utility model provides a specific technical scheme as follows:
the utility model provides a pair of silt and soft soil foundation normal position solidification foundation structure, including silt layer and cement stirring stake, be soft soil layer on the silt layer, be provided with cement stirring stake in soft soil layer and the silt layer, the cement stirring stake outside is provided with the protection casing, be provided with the connecting plate on the protection casing, be provided with a plurality of long screw on the connecting plate.
Optionally, the upper end of the soft soil layer is a sand cushion layer, the sand cushion layer adopts medium and coarse sand, and the thickness of the sand cushion layer is 0.6-1.0 m.
Optionally, the upper end of the sand cushion layer is a plate layer, and the plate layer is a reinforced concrete slab.
Optionally, the cement mixing piles are formed by adding a curing agent into the sludge layer and the soft soil layer, and are mixed and solidified, and a plurality of the cement mixing piles are arranged.
Optionally, the protective cover is provided with a threaded hole for fixing the long screw conveniently.
The utility model has the advantages as follows:
the embodiment of the utility model provides a silt and soft soil foundation normal position solidification foundation structure:
1. the cement mixing pile is formed by adding the curing agent and cement into the silt and the soft soil and mixing the curing agent, the cement and the original foundation soft soil and the silt through in-situ mixing, so that original soil is utilized to the maximum extent, and a protective cover is added at the mixing position, so that the foundation is less extruded laterally during mixing, the influence on the original structure around is less, and compared with a reinforced concrete pile, a large amount of steel is saved, and the manufacturing cost is reduced.
2. The sand cushion layer is arranged above the soft soil layer, so that the drainage effect can be achieved, the smooth drainage of gap water in the foundation under the action of the filling load is ensured, the consolidation of the foundation is accelerated, and the foundation is protected from being soaked by the gap water; and the medium and coarse sand is mainly adopted, the raw materials are common, and the raw materials are tamped in layers and serve as a bearing layer of the foundation, so that the bearing capacity of the foundation under the shallow foundation is improved, and the slab layer is added on the sand cushion layer, so that the firmness of the foundation is further improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of an in-situ solidified foundation structure of silt and soft soil foundation according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a cement mixing pile of an in-situ solidified foundation structure of a silt and soft soil foundation according to an embodiment of the present invention;
fig. 3 is the utility model discloses a structural schematic of silt and soft soil foundation normal position solidification foundation structure's protection casing.
In the figure: 1. a sludge layer; 2. stirring the piles with cement; 3. a soft soil layer; 4. a protective cover; 5. a sand cushion layer; 6. a ply layer; 7. a connecting plate; 8. a long screw.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The in-situ solidified foundation structure of silt and soft soil foundation according to the embodiment of the present invention will be described in detail with reference to fig. 1 to 3.
Referring to fig. 1-3, the embodiment of the utility model provides a silt and soft soil foundation normal position solidification foundation structure, including silt layer 1 and cement mixing stake 2, be soft soil layer 3 on the silt layer 1, be provided with cement mixing stake 2 in soft soil layer 3 and the silt layer 1, the 2 outsides in cement mixing stake are provided with protection casing 4, be provided with connecting plate 7 on the protection casing 4, be provided with a plurality of long screw 8 on the connecting plate 7.
In the illustrated example, the cement mixing pile 2 is formed by adding a curing agent and cement into silt and soft soil, mixing and solidifying, and the protective cover 4 is added at the mixing position, so that the foundation is less extruded out laterally during mixing, and the influence on the original structure around is less.
Referring to fig. 1, the upper end of the soft soil layer 3 is a sand cushion 5, and the sand cushion 5 adopts medium and coarse sand, and has a thickness of 0.6-1.0 m.
In the example, medium and coarse sand is adopted, raw materials are common, and are tamped in a layering mode to serve as a bearing layer of a foundation, so that the bearing capacity of the foundation under a shallow foundation is improved.
Referring to fig. 1, the sand cushion layer 5 is provided with a slab layer 6 at the upper end, and the slab layer 6 is a reinforced concrete slab.
By way of example, a slab layer 6 of a reinforced concrete slab is added on the sand cushion layer 5, and the firmness of the foundation is further improved.
Referring to fig. 1, the cement mixing piles 2 are formed by adding a curing agent into a sludge layer 1 and a soft soil layer 3 and mixing and solidifying the mixture, and are provided in plurality.
In the illustrated example, the cement mixing pile 2 is formed by adding the curing agent and the cement into the silt and the soft soil, and mixing the curing agent, the cement and the soft soil and the silt in the original foundation in a stirring manner, so that the original soil is utilized to the maximum extent.
Referring to fig. 2 and 3, the protective cover 4 is provided with a threaded hole to facilitate the fixing of the long screw 8.
Illustratively, the protective cover 4 is provided with a threaded hole for fixing a long screw 8, and the long screw 8 is used for fixing the connecting plate 7, so that the two protective covers 4 are connected together to ensure the normal use of the protective cover 4.
A plurality of protective covers 4 are placed in the sludge layer 1 and the soft soil layer 3, in order to avoid the situation that the protective covers 4 are not enough in length, long screws and connecting plates 7 are utilized on the protective covers 4 to connect the two protective covers 4 together, sufficient curing agent and cement are added on the soft soil layer 3 in the center of the protective covers 4, the curing agent, the cement, soft soil and sludge are fully stirred by a drilling machine with enough length and then are solidified and formed, and the cement stirring pile 2 is manufactured; the cement mixing pile 2 is formed by adding a curing agent and cement into the silt and the soft soil, stirring and solidifying, because the curing agent, the cement, the original foundation soft soil and the silt are stirred and mixed on site, the original soil is utilized to the maximum extent, and the protective cover 4 is added at the stirring position, the lateral extrusion of the foundation is less during stirring, the influence on the original structure around is less, and compared with a reinforced concrete pile, a large amount of steel is saved, and the manufacturing cost is reduced; a sand cushion 5 with the thickness of 0.6-1.0 m is laid on the soft soil layer 3 to play a role in draining water, so that smooth drainage of water in gaps in the foundation under the action of filling load is ensured, namely consolidation of the foundation is accelerated, and the foundation is also protected from being soaked by the water in the gaps; the medium and coarse sand are mainly adopted, the raw materials are common, and the raw materials are tamped in layers to serve as a bearing layer of the foundation, so that the bearing capacity of the foundation under the shallow foundation is improved; after the sand cushion layer 5 is firmly tamped, the reinforced concrete slab is arranged above the sand cushion layer, and the firmness of the foundation is further improved due to the good durability and fire resistance of the reinforced concrete.
The utility model relates to a silt and soft soil foundation in-situ solidification foundation structure, which comprises a silt layer 1; 2. stirring the piles with cement; 3. a soft soil layer; 4. a protective cover; 5. a sand cushion layer; 6. a ply layer; 7. a connecting plate; 8. the construction and principle of the long screws, the components being standard parts in general or known to the person skilled in the art, are known to the person skilled in the art or by routine experimentation.
It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments 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 (5)
1. The utility model provides a silt and soft soil foundation normal position solidification foundation structure, includes silt layer (1) and cement mixing stake (2), its characterized in that, be soft soil layer (3) on silt layer (1), be provided with cement mixing stake (2) in soft soil layer (3) and silt layer (1), the cement mixing stake (2) outside is provided with protection casing (4), be provided with connecting plate (7) on protection casing (4), be provided with a plurality of long screw (8) on connecting plate (7).
2. The in-situ solidification foundation structure of the sludge and soft soil foundation as claimed in claim 1, wherein the upper end of the soft soil layer (3) is a sand cushion layer (5), and the sand cushion layer (5) adopts medium and coarse sand, and has a thickness of 0.6-1.0 m.
3. An in situ solidified foundation structure of silt and soft soil foundation according to claim 2, characterized in that the upper end of said sand cushion layer (5) is a slab layer (6), and said slab layer (6) is a reinforced concrete slab.
4. The in-situ solidification foundation structure of the sludge and the soft soil foundation according to claim 1, wherein a plurality of cement mixing piles (2) are formed by adding a curing agent into the sludge layer (1) and the soft soil layer (3) and mixing and solidifying the mixture.
5. An in-situ solidified foundation structure of sludge and soft soil foundation as claimed in claim 1, wherein said protecting cover (4) is provided with a threaded hole for fixing a long screw (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120423725.7U CN214573877U (en) | 2021-02-26 | 2021-02-26 | Silt and soft soil foundation normal position solidification foundation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120423725.7U CN214573877U (en) | 2021-02-26 | 2021-02-26 | Silt and soft soil foundation normal position solidification foundation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214573877U true CN214573877U (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120423725.7U Expired - Fee Related CN214573877U (en) | 2021-02-26 | 2021-02-26 | Silt and soft soil foundation normal position solidification foundation structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN214573877U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541362A (en) * | 2022-04-11 | 2022-05-27 | 清华大学 | Foundation treatment method and artificial foundation |
-
2021
- 2021-02-26 CN CN202120423725.7U patent/CN214573877U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114541362A (en) * | 2022-04-11 | 2022-05-27 | 清华大学 | Foundation treatment method and artificial foundation |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211102 |