CN217027018U - A downthehole dynamic compaction gravel pile foundation structure for large tracts of land weak soil is consolidated - Google Patents
A downthehole dynamic compaction gravel pile foundation structure for large tracts of land weak soil is consolidated Download PDFInfo
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- CN217027018U CN217027018U CN202220643277.6U CN202220643277U CN217027018U CN 217027018 U CN217027018 U CN 217027018U CN 202220643277 U CN202220643277 U CN 202220643277U CN 217027018 U CN217027018 U CN 217027018U
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Abstract
The utility model provides a foundation structure of a dynamic compaction gravel pile in a hole for reinforcing large-area soft soil, which comprises a gravel pile, a soft soil layer, a bearing platform and a terrace; the gravel piles are uniformly arranged in the soft soil layer, and a terrace and a bearing platform are arranged above the soft soil layer; the gravel pile is formed by multilayer dynamic compaction layers, the dynamic compaction layer comprises a vertical rectangular cross-section-shaped first dynamic compaction gravel layer at the bottom, the bottom of the first dynamic compaction gravel layer is located on a hard soil layer below a soft soil layer, an isosceles trapezoid cross-section-shaped second dynamic compaction gravel layer which is expanded upwards is arranged above the first dynamic compaction gravel layer, and a horizontal rectangular cross-section-shaped third dynamic compaction gravel layer is arranged above the second dynamic compaction gravel layer.
Description
Technical Field
The utility model relates to the field of large-area soft soil foundation reinforcement, in particular to a pre-reinforcing structure for terrace foundations such as soft soil logistics warehouses, plants, roads and the like.
Background
With the rapid development of the infrastructure industry in China, various large logistics storage, factory buildings, roads and other projects are increasing day by day, the faced geological conditions are more complex, and the requirements on the foundation are higher and higher, wherein most of the storage warehouses, the roads and the like are built on a filled soil or weak soil foundation, the soft soil foundation is usually a modern deposition and is not dead-weight consolidated stratum, the bearing capacity of the foundation is low, and the requirements of an upper structure on the bearing capacity and the settlement of the foundation are difficult to meet if the reinforcement treatment is not carried out.
Therefore, an economic, efficient and good-treatment-effect foundation reinforcement structure is urgently needed for engineering construction of large-area logistics storage, workshops, roads and the like in soft soil areas.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a foundation structure of an in-hole dynamic compaction gravel pile for reinforcing large-area soft soil, aiming at the defects and defects of the prior art.
In order to realize the purpose, the utility model adopts the technical scheme that: a kind of foundation structure of the dynamic compaction gravel pile in the hole used for large-area soft soil reinforcement, including gravel pile, soft soil layer, cushion cap, terrace; the gravel piles are uniformly arranged in the soft soil layer, and a terrace and a bearing platform are arranged above the soft soil layer; the gravel pile is composed of a plurality of layers of dynamic compaction layers, the dynamic compaction layer comprises a bottommost vertical rectangular cross-section-shaped first dynamic compaction gravel layer, the bottom of the first dynamic compaction gravel layer is located on a hard soil layer below a soft soil layer, an upwards-expanded isosceles trapezoid cross-section-shaped second dynamic compaction gravel layer is arranged above the first dynamic compaction gravel layer, and a transverse rectangular cross-section-shaped third dynamic compaction gravel layer is arranged above the second dynamic compaction gravel layer.
Preferably, the filler of the dynamic compaction layer comprises broken stones, block stones and building slag.
Preferably, the height of the gravel pile is 6-12m, and the height proportion relationship of the first dynamic compaction gravel layer, the second dynamic compaction gravel layer and the third dynamic compaction gravel layer is 3:2: 1.
Preferably, the space between the gravel piles is 3-4 m.
The beneficial effects of the utility model are: by adopting the structure of the utility model, the three-stage dynamic compaction layer is arranged, and the three-stage dynamic compaction layer becomes wider from bottom to top in sequence, so that the bearing capacity of the foundation can be effectively improved, and the structure is economic, efficient and good in reinforcement treatment effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model.
Fig. 1 is a schematic structural diagram of a foundation of a dynamic compaction gravel pile in a hole for reinforcing large-area soft soil.
Wherein: 1 is a gravel pile, 2 is a soft soil layer, 3 is a bearing platform, 4 is a terrace, 5 is a hard soil layer, 1-1 is a first strong ramming gravel layer, 1-2 is a second strong ramming gravel layer, and 1-3 is a third strong ramming gravel layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in the figure, the in-hole dynamic compaction gravel pile foundation structure for reinforcing large-area soft soil comprises a gravel pile 1, a soft soil layer 2, a bearing platform 3 and a terrace 4; the gravel piles 1 are uniformly arranged in the soft soil layer 2, and a terrace 4 and a bearing platform 3 are arranged above the soft soil layer 2; the gravel pile 1 is composed of a plurality of layers of dynamic compaction layers, each dynamic compaction layer comprises a vertical rectangular cross-section-shaped first dynamic compaction gravel layer 1-1 at the bottommost part, the bottom of the first dynamic compaction gravel layer 1-1 is located on a hard soil layer 5 below a soft soil layer 2, an isosceles trapezoid cross-section-shaped second dynamic compaction gravel layer 1-2 expanding upwards is arranged above the first dynamic compaction gravel layer 1-1, and a transverse rectangular cross-section-shaped third dynamic compaction gravel layer 1-3 is arranged above the second dynamic compaction gravel layer 1-2.
In specific implementation, the filler of the dynamic compaction layer comprises broken stones, lump stones and building slag.
In the concrete implementation, the height of the gravel pile is 6-12m, and the height proportion relation of the first dynamic compaction gravel layer, the second dynamic compaction gravel layer and the third dynamic compaction gravel layer is 3:2: 1.
In specific implementation, the distance between the gravel piles is 3-4 m.
Claims (3)
1. The utility model provides an downthehole dynamic compaction gravel pile foundation structure for large tracts of land weak soil is consolidated which characterized in that: comprises a gravel pile, a soft soil layer, a bearing platform and a terrace; the gravel piles are uniformly arranged in the soft soil layer, and a terrace and a bearing platform are arranged above the soft soil layer; the gravel pile is composed of a plurality of layers of dynamic compaction layers, the dynamic compaction layer comprises a bottommost vertical rectangular cross-section-shaped first dynamic compaction gravel layer, the bottom of the first dynamic compaction gravel layer is located on a hard soil layer below a soft soil layer, an upwards-expanded isosceles trapezoid cross-section-shaped second dynamic compaction gravel layer is arranged above the first dynamic compaction gravel layer, and a transverse rectangular cross-section-shaped third dynamic compaction gravel layer is arranged above the second dynamic compaction gravel layer.
2. The structure of claim 1, wherein the structure is characterized in that: the height of the gravel pile is 6-12m, and the height proportion relationship of the first dynamic compaction gravel layer, the second dynamic compaction gravel layer and the third dynamic compaction gravel layer is 3:2: 1.
3. The structure of claim 1, wherein the structure is characterized in that: the distance between the gravel piles is 3-4 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220643277.6U CN217027018U (en) | 2022-03-22 | 2022-03-22 | A downthehole dynamic compaction gravel pile foundation structure for large tracts of land weak soil is consolidated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220643277.6U CN217027018U (en) | 2022-03-22 | 2022-03-22 | A downthehole dynamic compaction gravel pile foundation structure for large tracts of land weak soil is consolidated |
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| Publication Number | Publication Date |
|---|---|
| CN217027018U true CN217027018U (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202220643277.6U Active CN217027018U (en) | 2022-03-22 | 2022-03-22 | A downthehole dynamic compaction gravel pile foundation structure for large tracts of land weak soil is consolidated |
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| CN (1) | CN217027018U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115198735A (en) * | 2022-07-29 | 2022-10-18 | 山西机械化建设集团有限公司 | Construction method of SDDC (Standard deviation DC) slide-resistant pile in open-pit mining disordered backfill area |
-
2022
- 2022-03-22 CN CN202220643277.6U patent/CN217027018U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115198735A (en) * | 2022-07-29 | 2022-10-18 | 山西机械化建设集团有限公司 | Construction method of SDDC (Standard deviation DC) slide-resistant pile in open-pit mining disordered backfill area |
| CN115198735B (en) * | 2022-07-29 | 2023-11-24 | 山西机械化建设集团有限公司 | Construction method of SDDC (Standard data Console) slide-resistant pile in disordered backfill region of open-pit mining |
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