CN101608421A - The method of reinforcing soft soil roadbed by geotextile granular material pile - Google Patents
The method of reinforcing soft soil roadbed by geotextile granular material pile Download PDFInfo
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- CN101608421A CN101608421A CNA2009100633200A CN200910063320A CN101608421A CN 101608421 A CN101608421 A CN 101608421A CN A2009100633200 A CNA2009100633200 A CN A2009100633200A CN 200910063320 A CN200910063320 A CN 200910063320A CN 101608421 A CN101608421 A CN 101608421A
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Abstract
The invention belongs to the civil engineering construction field, be specifically related to a kind of reinforcing soft soil roadbed method.The method that worker's fabric granular pile is reinforcing soft soil roadbed is characterized in that it comprises the steps: 1) every interval 30～150cm lays a geotextile granular pile (1) soft soil roadbed; 2) level is laid layer of geotextile layer (2) on the ground of geotextile granular pile top bit, goes up at geotextile layer (2) then and lays mattress layer (3); Or directly on geotextile granular pile top bit, directly lay mattress layer (3); 3) the mattress layer top, horizontal is laid one deck second geogrids layer (5), and the material of second geogrids layer (5) is a geo-grid, then filling roadbed the banketing of second geogrids layer (5) higher slice (6).This method can effectively improve the effect of soft soil roadbed processing.
Description
Technical field
The invention belongs to the civil engineering construction field, be specifically related to a kind of reinforcing soft soil roadbed method.
Background technology
Highway construction such as highway, railway is by the weak soil location time, because of the deficiency of subgrade rating must be carried out the treatment of soft foundation design, to guarantee the stability and the sedimentation and deformation requirement of roadbed.Utilizing the reinforcing road bed weak soil of geotextile granular pile is a kind of new technology of subgrade strengthening design, and its reinforcement mechanism is the composite foundation treatment technology that integrates displacement, compacted, fixed and pile foundation load.
Summary of the invention
The object of the present invention is to provide a kind of method of reinforcing soft soil roadbed by geotextile granular material pile, this method can effectively improve the effect of soft soil roadbed processing.
To achieve these goals, technical scheme of the present invention is: the method for reinforcing soft soil roadbed by geotextile granular material pile is characterized in that it comprises the steps:
1) every interval 30～150cm lays a geotextile granular pile 1 (job practices of geotextile granular pile is seen Chinese patent application 200810197321.X, and denomination of invention is: the method for processing soft foundation by earthwork fabric granular pile) soft soil roadbed; The plane mode of laying out pile is quadrangle or triangle, the diameter of geotextile granular pile can be designed to 30～200cm according to actual conditions, the spacing of geotextile granular pile is 0.5～3.0m, the stake of geotextile granular pile is long to be 0.5～25m, design parameters such as pile spacing, length can be handled the degree of depth according to geological conditions, ground, and condition such as subgrade deformation requirement calculates or experiment is determined;
2) adopt one of following two kinds of methods:
1. level is laid layer of geotextile layer 2 on the ground of geotextile granular pile top bit, lays mattress layer 3 then on geotextile layer 2; Geotextile layer 2 is to cover one deck geotextiles on one deck geo-grid or one deck geo-grid; The material of mattress layer 3 is medium coarse sand or rubble; The thickness of mattress layer is 20～100cm, the compacting compactness 0.85～0.95 of mattress layer;
2. or directly on geotextile granular pile top bit, directly lay mattress layer 3;
The material of mattress layer 3 is medium coarse sand or rubble; The thickness of mattress layer is 20～100cm, the compacting compactness 0.85～0.95 of mattress layer;
3) material of laying one deck second geogrids layer 5, the second geogrids layer 5 in the mattress layer top, horizontal is a geo-grid, bankets 6 in that second geogrids layer, 5 higher slices are filling roadbed then.
In the described mattress layer, lay first geogrids layer 4 apart from level by 20～50cm interlamellar spacing; The material of first geogrids layer 4 is a geo-grid.Can establish 1～4 first geogrids layer in the mattress layer.
The distance of described interlamellar spacing is meant: the distance between the bottom surface of basecoat first geogrids layer and mattress layer (or geotextile layer 2), first adjacent geogrids layer and the distance between first geogrids layer, the distance between last layer first geogrids layer and second geogrids layer 5.
The maximum particle diameter of rubble should not surpass 10cm.
The invention has the beneficial effects as follows: method of the present invention is applicable to the soft soil roadbed processing of highway construction various types of properties, it is that several grounds of the displacement of collection part, compacted, discharging consolidation, pile foundation load are handled mechanism and are compound in one that this method is handled roadbed weak soil, the stress that the while embankment load is formed by geo-grid and mattress layer is regulated the basis load stress is forwarded on stake and the inter-pile soil, make stake, soil bear load jointly, this can effectively improve the effect of soft soil roadbed processing.The compliance that this method is handled the roadbed weak soil is strong.
Description of drawings
Fig. 1 is the sectional schematic diagram of reinforcing soft soil roadbed by geotextile granular material pile of the present invention;
Among the figure: 1-geotextile granular pile, 2-geotextile layer, the 3-mattress layer, 4-first geogrids layer, 5-second geogrids layer, the 6-roadbed bankets, the 7-soft foundation.
The specific embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with example, but the present invention not only is confined to the following examples.
Embodiment 1:
The method of reinforcing soft soil roadbed by geotextile granular material pile, it comprises the steps:
1) every interval 30cm lays a geotextile granular pile (job practices of geotextile granular pile is seen Chinese patent application 200810197321.X, and denomination of invention is: the method for processing soft foundation by earthwork fabric granular pile) soft soil roadbed; The plane mode of laying out pile is a quadrangle, the diameter of geotextile granular pile can be designed to 30cm according to actual conditions, the spacing of geotextile granular pile is 1.0m, the stake of geotextile granular pile is long to be 3.5m, design parameters such as pile spacing, length can be handled the degree of depth according to geological conditions, ground, and condition such as subgrade deformation requirement calculates or experiment is determined;
2) level is laid layer of geotextile layer (the geotextile layer is one deck geo-grid) on the ground of geotextile granular pile top bit, and the material of geotextile layer is a geo-grid; On the geotextile layer, lay mattress layer then;
The material of mattress layer is a medium coarse sand; The thickness of mattress layer is 20cm, the compacting compactness 0.85 of mattress layer;
3) the mattress layer top, horizontal is laid one deck geogrids layer (being one deck geo-grid), and the material of geogrids layer is a geo-grid, fills closely knit roadbed at the geogrids layer higher slice then and bankets.
Embodiment 2:
The method of reinforcing soft soil roadbed by geotextile granular material pile, it comprises the steps:
1) every interval 100cm lays a geotextile granular pile 1 (job practices of geotextile granular pile is seen Chinese patent application 200810197321.X, and denomination of invention is: the method for processing soft foundation by earthwork fabric granular pile) on soft soil roadbed 7; The plane mode of laying out pile is a quadrangle, the diameter of geotextile granular pile can be designed to 60cm according to actual conditions, the spacing of geotextile granular pile is 1.5m, the stake of geotextile granular pile is long to be 15m, design parameters such as pile spacing, length can be handled the degree of depth according to geological conditions, ground, and condition such as subgrade deformation requirement calculates or experiment is determined;
2) directly on geotextile granular pile top bit, directly lay mattress layer 3;
The material of mattress layer 3 is a medium coarse sand; The thickness of mattress layer is 60cm, the compacting compactness 0.9 of mattress layer; Level is laid 2 first geogrids layer 4 (each first geogrids layer is one deck geo-grid), the first geo-grid interlamellar spacing 20cm in the mattress layer; The material of first geogrids layer 4 is a geo-grid;
3) the mattress layer top, horizontal is laid one deck second geogrids layer 5 (second geogrids layer is one deck geo-grid), and the material of second geogrids layer 5 is a geo-grid, and the closely knit roadbed that fills at second geogrids layer, 5 higher slices bankets 6 then.
Embodiment 3:
The method of reinforcing soft soil roadbed by geotextile granular material pile, it comprises the steps:
1) every interval 100cm lays a geotextile granular pile 1 (job practices of geotextile granular pile is seen Chinese patent application 200810197321.X, and denomination of invention is: the method for processing soft foundation by earthwork fabric granular pile) on soft soil roadbed 7; The plane mode of laying out pile is a quadrangle, the diameter of geotextile granular pile can be designed to 100cm according to actual conditions, the spacing of geotextile granular pile is 2.0m, the stake of geotextile granular pile is long to be 15m, design parameters such as pile spacing, length can be handled the degree of depth according to geological conditions, ground, and condition such as subgrade deformation requirement calculates or experiment is determined;
2) level is laid layer of geotextile layer 2 on the ground of geotextile granular pile top bit, and geotextile layer 2 is to cover one deck geotextiles on one deck geo-grid; On geotextile layer 2, lay mattress layer 3 then;
The material of mattress layer 3 is a medium coarse sand; The thickness of mattress layer is 60cm, the compacting compactness 0.9 of mattress layer; Level is laid 2 first geogrids layer 4 (each first geogrids layer is one deck geo-grid), the first geo-grid interlamellar spacing 20cm in the mattress layer; The material of first geogrids layer 4 is a geo-grid;
3) the mattress layer top, horizontal is laid one deck second geogrids layer 5 (second geogrids layer is one deck geo-grid), and the material of second geogrids layer 5 is a geo-grid, and the closely knit roadbed that fills at second geogrids layer, 5 higher slices bankets 6 then.
Embodiment 4:
As shown in Figure 1, the method for reinforcing soft soil roadbed by geotextile granular material pile, it comprises the steps:
1) every interval 150cm lays a geotextile granular pile 1 (job practices of geotextile granular pile is seen Chinese patent application 200810197321.X, and denomination of invention is: the method for processing soft foundation by earthwork fabric granular pile) on soft soil roadbed 7; The plane mode of laying out pile is a triangle, the diameter of geotextile granular pile can be designed to 80cm according to actual conditions, the spacing of geotextile granular pile is 1.8m, the stake of geotextile granular pile is long to be 25m, design parameters such as pile spacing, length can be handled the degree of depth according to geological conditions, ground, and condition such as subgrade deformation requirement calculates or experiment is determined;
2) level is laid layer of geotextile layer 2 on the ground of geotextile granular pile top bit, and geotextile layer 2 is to cover one deck geotextiles on one deck geo-grid; On geotextile layer 2, lay mattress layer 3 then;
The material of mattress layer 3 is a rubble; The thickness of mattress layer is 100cm, the compacting compactness 0.95 of mattress layer; Level is laid 1 layer of first geogrids layer 4 (every layer first geogrids layer is one deck geo-grid) in the mattress layer, and first geogrids layer is positioned at the middle part of mattress layer; The material of first geogrids layer 4 is a geo-grid;
3) the mattress layer top, horizontal is laid one deck second geogrids layer 5 (second geogrids layer is one deck geo-grid), and the material of second geogrids layer 5 is a geo-grid, fills closely knit roadbed at second geogrids layer, 5 higher slices then and bankets 6.
Embodiment 5:
Substantially the same manner as Example 4, difference is: level is laid 4 first geogrids layer 4 in the mattress layer, lays first geogrids layer by the 20cm interlamellar spacing apart from level.
Claims (2)
1. the method for reinforcing soft soil roadbed by geotextile granular material pile is characterized in that it comprises the steps:
1) every interval 30～150cm lays a geotextile granular pile (1) soft soil roadbed; The plane mode of laying out pile is quadrangle or triangle, and the diameter of geotextile granular pile is 30～200cm, and the spacing of geotextile granular pile is 0.5～3.0m, and the stake of geotextile granular pile is long to be 0.5～25m;
2) adopt one of following two kinds of methods:
1. level is laid layer of geotextile layer (2) on the ground of geotextile granular pile top bit, goes up at geotextile layer (2) then and lays mattress layer (3); Geotextile layer (2) is to cover one deck geotextiles on one deck geo-grid or one deck geo-grid; The material of mattress layer (3) is medium coarse sand or rubble; The thickness of mattress layer is 20～100cm, the compacting compactness 0.85～0.95 of mattress layer;
2. directly on geotextile granular pile top bit, directly lay mattress layer (3);
The material of mattress layer (3) is medium coarse sand or rubble; The thickness of mattress layer is 20～100cm, the compacting compactness 0.85～0.95 of mattress layer;
3) lay one deck second geogrids layer (5) in the mattress layer top, horizontal, the material of second geogrids layer (5) is a geo-grid, then filling roadbed the banketing of second geogrids layer (5) higher slice (6).
2. the method for reinforcing soft soil roadbed by geotextile granular material pile according to claim 1 is characterized in that: in the described mattress layer, lay first geogrids layer (4) by 20～50cm interlamellar spacing apart from level; The material of first geogrids layer (4) is a geo-grid.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953309A (en) * | 2012-11-09 | 2013-03-06 | 中铁六局集团天津铁路建设有限公司 | Method for constructing high-speed railway subgrade |
| CN105507102A (en) * | 2015-12-15 | 2016-04-20 | 上海交通大学 | Construction method for utilizing waste plastic woven bags for reinforcing roadbed |
| CN104947560B (en) * | 2014-03-28 | 2017-04-19 | 中国二十冶集团有限公司 | Pile-net composite roadbed pile top differential settlement control method |
| CN106592363A (en) * | 2016-11-29 | 2017-04-26 | 昆山顶牛市政建设有限公司 | Construction method for municipal soft soil roadbed |
| CN106609490A (en) * | 2016-12-13 | 2017-05-03 | 重庆交通大学 | Pile-reinforcement material composite foundation structure and construction methods thereof |
| CN107700300A (en) * | 2017-10-17 | 2018-02-16 | 蒋昌霞 | A kind of safety protective road foundation |
| CN108018752A (en) * | 2017-12-02 | 2018-05-11 | 江苏惠淳建设有限公司 | A kind of soft soil roadbed reinforcing construction process |
| CN112458814A (en) * | 2020-12-11 | 2021-03-09 | 孙萌 | Road design roadbed reinforced structure |
| CN114908760A (en) * | 2022-05-31 | 2022-08-16 | 山东建筑大学 | Three-dimensional reinforcement structure and method for near top surface of deep foundation pit of alluvial field road |
-
2009
- 2009-07-27 CN CNA2009100633200A patent/CN101608421A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953309A (en) * | 2012-11-09 | 2013-03-06 | 中铁六局集团天津铁路建设有限公司 | Method for constructing high-speed railway subgrade |
| CN104947560B (en) * | 2014-03-28 | 2017-04-19 | 中国二十冶集团有限公司 | Pile-net composite roadbed pile top differential settlement control method |
| CN105507102A (en) * | 2015-12-15 | 2016-04-20 | 上海交通大学 | Construction method for utilizing waste plastic woven bags for reinforcing roadbed |
| CN106592363A (en) * | 2016-11-29 | 2017-04-26 | 昆山顶牛市政建设有限公司 | Construction method for municipal soft soil roadbed |
| CN106592363B (en) * | 2016-11-29 | 2019-04-26 | 滨州交通工程公司 | A kind of construction method that municipal administration is soft soil roadbed |
| CN106609490A (en) * | 2016-12-13 | 2017-05-03 | 重庆交通大学 | Pile-reinforcement material composite foundation structure and construction methods thereof |
| CN106609490B (en) * | 2016-12-13 | 2019-04-05 | 重庆交通大学 | A kind of stake-reinforcement material composite foundation structure and its construction method |
| CN107700300A (en) * | 2017-10-17 | 2018-02-16 | 蒋昌霞 | A kind of safety protective road foundation |
| CN108018752A (en) * | 2017-12-02 | 2018-05-11 | 江苏惠淳建设有限公司 | A kind of soft soil roadbed reinforcing construction process |
| CN112458814A (en) * | 2020-12-11 | 2021-03-09 | 孙萌 | Road design roadbed reinforced structure |
| CN112458814B (en) * | 2020-12-11 | 2022-04-19 | 孙萌 | Road design roadbed reinforced structure |
| CN114908760A (en) * | 2022-05-31 | 2022-08-16 | 山东建筑大学 | Three-dimensional reinforcement structure and method for near top surface of deep foundation pit of alluvial field road |
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