CN109469043B - Dynamic compaction replacement reinforcement structure and reinforcement method for multi-layer block stone filled foundation - Google Patents
Dynamic compaction replacement reinforcement structure and reinforcement method for multi-layer block stone filled foundation Download PDFInfo
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- CN109469043B CN109469043B CN201811391286.5A CN201811391286A CN109469043B CN 109469043 B CN109469043 B CN 109469043B CN 201811391286 A CN201811391286 A CN 201811391286A CN 109469043 B CN109469043 B CN 109469043B
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- dynamic compaction
- stone
- block stone
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- 239000004575 stone Substances 0.000 title claims abstract description 54
- 238000005056 compaction Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000002787 reinforcement Effects 0.000 title abstract description 18
- 239000004927 clay Substances 0.000 claims abstract description 48
- 239000000945 filler Substances 0.000 claims description 31
- 238000010276 construction Methods 0.000 claims description 22
- 239000002245 particle Substances 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 239000002689 soil Substances 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 239000002893 slag Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 61
- 239000011435 rock Substances 0.000 description 13
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 10
- 239000002344 surface layer Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0037—Clays
Abstract
The invention discloses a multi-layer block stone filled foundation dynamic compaction replacement reinforcement structure and a reinforcement method. The invention carries out reinforcement treatment on the filled foundation, can digest and treat a large amount of waste clay generated by excavating mountain bodies, avoids water and soil loss caused by random stacking, reduces engineering freight cost generated by waste slag outward transportation, and can meet design and specification requirements by the strength of the composite foundation formed by dynamic compaction replacement piers and soil between piers.
Description
Technical Field
The invention relates to a dynamic compaction replacement reinforcement structure and a reinforcement method for a multilayer block stone filled foundation.
Background
With the development of economy, the foundation construction scale of southwest mountain areas is enlarged, and a large amount of land is needed to solve the land requirement. At present, in the engineering construction process, the problem of construction land is solved by digging and filling mountain and gully. A large amount of carbonate rock-soil-rock mass tends to be produced due to the large excavation blasting of the rock-soil mass. The produced carbonate rock broken stone and block stone are backfilled into the gully and compacted by a dynamic compaction or rolling process, so that a manual backfilled foundation is formed as an upper building bearing layer, and a great deal of engineering practice exists. But the cultivated soil, clay, sand and the like on the surface layer of the mountain body are not easy to be used as backfill materials due to the characteristics of loose structure, low shear strength, high compression ratio and the like, and a large amount of waste earthwork is not generated. And the need to find new landfill sites for them may create new environmental problems.
Disclosure of Invention
The invention aims to solve the technical problems that: the foundation after the reinforcement of dynamic compaction replacement can digest a large amount of waste clay generated by engineering project construction, can solve the water and soil loss caused by random pile and discard of the clay, can meet the bearing capacity requirement of an upper structure (building), and reduces engineering cost caused by long-distance transportation of waste earthwork, so as to solve the problems in the prior art.
The technical scheme adopted by the invention is as follows: the utility model provides a multilayer block stone fills foundation dynamic compaction replacement reinforced structure, includes block stone packing layer, clay layer and waterproof bed course, and waterproof bed course sets up on the surface, from last to having set gradually staggered's multilayer block stone packing layer and clay layer down, multilayer block stone packing layer and clay layer are provided with many dynamic compaction replacement mounds.
Preferably, the thickness of the stone filler layer is 2-3 m, the thickness of the clay layer is 1-2 m, and the thickness of the waterproof cushion layer is 0.3m.
A reinforcement method of a dynamic compaction replacement reinforcement structure of a multilayer block stone filled foundation comprises the following steps: firstly, paving a block stone filler layer and a clay layer in a staggered manner on a construction backfill field, tamping the filler into the block stone filler layer and the clay layer to form a dynamic compaction replacement pier by adopting a dynamic compaction replacement method, constructing a plurality of layers of staggered block stone filler layers and clay layers until reaching a designed height by adopting the method, paving a waterproof cushion layer on the construction field after backfilling is completed, and then performing full compaction construction.
Preferably, the stone filler layer is formed by mixing stone blocks with the particle size of 300-600 mm, stone blocks with the particle size of less than 50mm and clay in a grading way, wherein the weight content of the stone blocks with the particle size of 300-600 mm is more than 50%, the weight content of the stone blocks with the particle size of less than 50mm is less than 20%, and the weight content of the clay is less than 5%.
The invention has the beneficial effects that: compared with the prior art, the method has the advantages that the filled foundation is reinforced, a large amount of waste clay generated by excavating mountain bodies can be digested, water and soil loss caused by random stacking is avoided, engineering freight cost generated by waste slag outward transportation is reduced, and the strength of the composite foundation formed by the dynamic compaction replacement piers and soil between piers can meet design and specification requirements.
Drawings
Fig. 1 is a schematic cross-sectional structure of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific examples.
Example 1: as shown in fig. 1, a multi-layer block stone filled foundation dynamic compaction replacement reinforcing structure comprises a block stone filler layer 1, a clay layer 2 and a waterproof cushion layer 4, wherein the waterproof cushion layer 4 is arranged on the surface, the multi-layer block stone filler layer 1 and the clay layer 2 which are arranged in a staggered manner are sequentially arranged from top to bottom, and the multi-layer block stone filler layer 1 and the clay layer 2 are provided with a plurality of dynamic compaction replacement piers 3.
Preferably, the thickness of the stone filler layer 1 is 2-3 m, the thickness of the clay layer 2 is 1-2 m, and the thickness of the waterproof cushion layer 4 is 0.3m.
Example 2: the reinforcing method of the dynamic compaction replacement reinforcing structure of the multi-layer block stone filled foundation comprises the following steps:
step 1: cleaning a construction site to be backfilled, paving carbonate natural graded rock blocks generated by excavating mountain bodies, and paving the carbonate natural graded rock blocks to a thickness of 3 meters, wherein the filler clay content is not more than 5%, so as to form a rock block filler layer 1;
step 2: paving clay generated by excavating mountain bodies, wherein the paving thickness is 2 meters, and forming a clay layer 2;
Step 3: and marking the position of the tamping point of the dynamic compaction replacement, wherein the tamping point is arranged in a rectangular shape, and the dynamic compaction replacement construction can be carried out by adopting 8000 kN m tamping. The dynamic compaction replacement adopts graded filler with the particle size of the block stone of 300 mm-600 mm and the content of more than 50%, the particle size of the block stone of less than 50mm and the content of less than 20%, and the clay content of less than 5%. The ramming pier is completed once when the total backfill thickness of the stone filling layer 1 and the clay layer 2 is reached, and a dynamic compaction replacement pier 3 is formed;
step 4: and (5) repeating the step (1) and the step (2), and continuously paving the blocky stone filler layer (1) and the clay layer (2). And (3) after backfilling is completed, the tamping point position of the pier 3 is replaced by dynamic compaction in the step 3, and the construction process of dynamic compaction replacement in the step 3 is repeated to perform replacement reinforcement. Repeating the steps until the backfill design elevation is reached;
Step 5: after the backfilling construction is completed, a clay layer with the thickness of 30cm is arranged on the surface layer, and the site can be fully rammed by adopting 3000 kN.m ramming, so that the multi-layer carbonate rock block filling foundation dynamic compaction replacement reinforcement is completed.
Example 3: the reinforcing method of the dynamic compaction replacement reinforcing structure of the multi-layer block stone filled foundation comprises the following steps:
Step 1: cleaning a construction site to be backfilled, paving carbonate natural graded rock blocks generated by excavating mountain bodies, and paving the carbonate natural graded rock blocks to a thickness of 2 meters, wherein the filler clay content is not more than 5%, so as to form a rock block filler layer 1;
Step 2: paving clay generated by excavating mountain bodies, wherein the paving thickness is 1 meter, and forming a clay layer 2;
Step 3: and marking the position of the tamping point of the dynamic compaction replacement, wherein the tamping point is arranged in a rectangular shape, and the dynamic compaction replacement construction can be carried out by adopting 8000 kN m tamping. The dynamic compaction replacement adopts graded filler with the particle size of the block stone of 300 mm-600 mm and the content of more than 50%, the particle size of the block stone of less than 50mm and the content of less than 20%, and the clay content of less than 5%. The ramming pier is completed once when the total backfill thickness of the stone filling layer 1 and the clay layer 2 is reached, and a dynamic compaction replacement pier 3 is formed;
step 4: and (5) repeating the step (1) and the step (2), and continuously paving the blocky stone filler layer (1) and the clay layer (2). And (3) after backfilling is completed, the tamping point position of the pier 3 is replaced by dynamic compaction in the step 3, and the construction process of dynamic compaction replacement in the step 3 is repeated to perform replacement reinforcement. Repeating the steps until the backfill design elevation is reached;
Step 5: after the backfilling construction is completed, a clay layer with the thickness of 30cm is arranged on the surface layer, and the site can be fully rammed by adopting 3000 kN.m ramming, so that the multi-layer carbonate rock block filling foundation dynamic compaction replacement reinforcement is completed.
Example 4: the reinforcing method of the dynamic compaction replacement reinforcing structure of the multi-layer block stone filled foundation comprises the following steps:
step 1: cleaning a construction site to be backfilled, paving carbonate natural graded rock blocks generated by excavating mountain bodies, and paving a filling thickness of 2.5 meters, wherein the filler clay content is not more than 5%, so as to form a rock block filler layer 1;
Step 2: paving clay generated by excavating mountain bodies, wherein the paving thickness is 1.5 meters, and forming a clay layer 2;
Step 3: and marking the position of the tamping point of the dynamic compaction replacement, wherein the tamping point is arranged in a rectangular shape, and the dynamic compaction replacement construction can be carried out by adopting 8000 kN m tamping. The dynamic compaction replacement adopts graded filler with the particle size of the block stone of 300 mm-600 mm and the content of more than 50%, the particle size of the block stone of less than 50mm and the content of less than 20%, and the clay content of less than 5%. The ramming pier is completed once when the total backfill thickness of the stone filling layer 1 and the clay layer 2 is reached, and a dynamic compaction replacement pier 3 is formed;
step 4: and (5) repeating the step (1) and the step (2), and continuously paving the blocky stone filler layer (1) and the clay layer (2). And (3) after backfilling is completed, the tamping point position of the pier 3 is replaced by dynamic compaction in the step 3, and the construction process of dynamic compaction replacement in the step 3 is repeated to perform replacement reinforcement. Repeating the steps until the backfill design elevation is reached;
Step 5: after the backfilling construction is completed, a clay layer with the thickness of 30cm is arranged on the surface layer, and the site can be fully rammed by adopting 3000 kN.m ramming, so that the multi-layer carbonate rock block filling foundation dynamic compaction replacement reinforcement is completed.
The foregoing is merely illustrative of the present invention, and the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the scope of the present invention, and therefore, the scope of the present invention shall be defined by the scope of the appended claims.
Claims (1)
1. The utility model provides a multilayer block stone fills foundation dynamic compaction replacement reinforced structure which characterized in that: the waterproof pavement structure comprises a block stone filler layer (1), a clay layer (2) and a waterproof cushion layer (4), wherein the waterproof cushion layer (4) is arranged on the surface, a plurality of layers of block stone filler layers (1) and clay layers (2) which are arranged in a staggered manner are sequentially arranged from top to bottom, and a plurality of dynamic compaction replacement piers (3) are arranged on the layers of block stone filler layers (1) and clay layers (2); the thickness of the stone filler layer (1) is 2-3 m, the thickness of the clay layer (2) is 1-2 m, and the thickness of the waterproof cushion layer (4) is 0.3m; the reinforcing method of the multi-layer block stone filled foundation dynamic compaction replacement reinforcing structure comprises the following steps: firstly, paving a block stone filler layer (1) and a clay layer (2) on a construction backfill site in a staggered manner, tamping the filler into the block stone filler layer (1) and the clay layer (2) to form a dynamic compaction replacement pier (3) by adopting a dynamic compaction replacement method, constructing a plurality of layers of staggered block stone filler layers (1) and clay layers (2) until reaching a designed height, paving a waterproof cushion layer (4) on the construction site after backfilling is completed, and then performing full compaction construction; the stone filler layer (1) is formed by grading and mixing stone blocks with the particle size of 300-600 mm, stone blocks with the particle size of 50mm and clay, wherein the weight content of the stone blocks with the particle size of 300-600 mm is more than 50%, the weight content of the stone blocks with the particle size of 50mm is less than 20%, and the weight content of the clay is less than 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811391286.5A CN109469043B (en) | 2018-11-21 | 2018-11-21 | Dynamic compaction replacement reinforcement structure and reinforcement method for multi-layer block stone filled foundation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811391286.5A CN109469043B (en) | 2018-11-21 | 2018-11-21 | Dynamic compaction replacement reinforcement structure and reinforcement method for multi-layer block stone filled foundation |
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| Publication Number | Publication Date |
|---|---|
| CN109469043A CN109469043A (en) | 2019-03-15 |
| CN109469043B true CN109469043B (en) | 2024-04-30 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050098126A (en) * | 2004-04-06 | 2005-10-11 | 정성교 | Soil impruvement method |
| CN101205714A (en) * | 2007-11-01 | 2008-06-25 | 席宁中 | Dynamic consolidation treating method for large rubble filled foundation |
| RU2008127379A (en) * | 2008-07-04 | 2010-01-10 | Александр Пантелеевич Курбатский (RU) | DEVICE OF MIXED FOUNDATIONS AND COATINGS BY THE METHOD OF TAMPER AND UNIT FOR MIXING THE COMPOSITION OF THE FOUNDATIONS |
| CN103711114A (en) * | 2012-10-08 | 2014-04-09 | 中国石油化工集团公司 | Foundation treatment method |
| CN106087946A (en) * | 2016-06-13 | 2016-11-09 | 贵州正业工程技术投资有限公司 | A kind of carbonate rock boulder strong rammer is combined to change to fill changes foundation reinforcement method |
| CN107905202A (en) * | 2017-11-09 | 2018-04-13 | 东南大学 | The migration path detection experimental provision of filler during high rheology weak soil dynamic replacement |
| CN209293009U (en) * | 2018-11-21 | 2019-08-23 | 贵州正业工程技术投资有限公司 | A kind of multilayer block stone fill foundation dynamic replacement ruggedized construction |
-
2018
- 2018-11-21 CN CN201811391286.5A patent/CN109469043B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050098126A (en) * | 2004-04-06 | 2005-10-11 | 정성교 | Soil impruvement method |
| CN101205714A (en) * | 2007-11-01 | 2008-06-25 | 席宁中 | Dynamic consolidation treating method for large rubble filled foundation |
| RU2008127379A (en) * | 2008-07-04 | 2010-01-10 | Александр Пантелеевич Курбатский (RU) | DEVICE OF MIXED FOUNDATIONS AND COATINGS BY THE METHOD OF TAMPER AND UNIT FOR MIXING THE COMPOSITION OF THE FOUNDATIONS |
| CN103711114A (en) * | 2012-10-08 | 2014-04-09 | 中国石油化工集团公司 | Foundation treatment method |
| CN106087946A (en) * | 2016-06-13 | 2016-11-09 | 贵州正业工程技术投资有限公司 | A kind of carbonate rock boulder strong rammer is combined to change to fill changes foundation reinforcement method |
| CN107905202A (en) * | 2017-11-09 | 2018-04-13 | 东南大学 | The migration path detection experimental provision of filler during high rheology weak soil dynamic replacement |
| CN209293009U (en) * | 2018-11-21 | 2019-08-23 | 贵州正业工程技术投资有限公司 | A kind of multilayer block stone fill foundation dynamic replacement ruggedized construction |
Non-Patent Citations (1)
| Title |
|---|
| 大夯能强夯置换在复杂软土地基的应用;邱茂顺等;福建建材(第10期);第59-61页 * |
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