CN203270559U - Roadbed structure of screw pile network structure composite foundation - Google Patents
Roadbed structure of screw pile network structure composite foundation Download PDFInfo
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- CN203270559U CN203270559U CN 201320302519 CN201320302519U CN203270559U CN 203270559 U CN203270559 U CN 203270559U CN 201320302519 CN201320302519 CN 201320302519 CN 201320302519 U CN201320302519 U CN 201320302519U CN 203270559 U CN203270559 U CN 203270559U
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- screw rod
- stake
- screw
- rod pile
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Abstract
The utility model discloses a roadbed structure of a screw pile network structure composite foundation. The roadbed structure comprises a pile body group penetrating through soil, the pile body group is composed of a plurality of pile bodies which are distributed at equal intervals, and the pile ends of the pile bodies enter a supporting layer in the soil. The pile bodies are screw piles, the upper portions of the screw piles are cylindrical, the lower portions of the screw piles are screw-shaped, a cap pile is arranged at the top of each screw pile, the upper sectional area of each cap pile is greater than the sectional area of each pile body, a reinforcing cushion layer is arranged on the upper end faces of the cap piles located on the same horizontal plane, an embankment which is filled and rolled in a layered mode is poured on the reinforcing cushion layer, and toe walls are arranged at slope toes of the embankment. The roadbed structure of the screw pile network structure composite foundation is good in stress property, has little influence on the environment, is high in processing depth and economical in cost, and can be used for processing roadbed engineering foundations of high speed railways and high-grade highways.
Description
Technical field
The utility model relates to the railway subgrade works field, relates in particular to and a kind ofly is applied in that foundation soil is deep, the road structure of the screw rod pile stake web frame composite foundation in the settlement Control difficult region.
Background technology
In the last few years, China Express Railway engineering construction career development was very fast, for guaranteeing the ride comfort of circuit, engineering settlement after construction under line had been proposed high requirement.For guaranteeing that the subgrade construction settlement after construction satisfies code requirement, adopt in a large number the composite foundation form, and the zone deep for foundation soil, that settlement Control is difficult often needs to adopt the stake web frame composite foundations such as reinforced concrete pile, pile tube, CFG stake.
The reinforced concrete pile pile degree of depth is large, and is not subject to the restriction of formation condition, and bearing capacity is high, stress performance good, but construction costs is higher, and needs mud off in work progress more, and is large to ambient influnence; Pile tube is a kind of Squeezing Soil Pile of expense economy, but the foundation soil that is not suitable for closely knit sandy soils and contains hard interbedded layer, and generally adopt the hammering method construction, noise pollution is large; The CFG stake is a kind of drilled pile of expense economy, but the general pile degree of depth is limited, generally within 27m.
Therefore, need prior art is improved.
The utility model content
The purpose of this utility model just is to solve the deficiency of above-mentioned background technology, and the road structure of the screw rod pile stake web frame composite foundation of a kind of subgrade construction ground that can be used for high-speed railway and high-grade highway in processing is provided.
the technical solution of the utility model is: a kind of road structure of screw rod pile stake web frame composite foundation, it comprises the pile body group who passes the soil body, described pile body group is made of the pile body of a plurality of equidistant layouts, the stake end of described pile body enters the bearing stratum in soil, it is characterized in that: described pile body is that top is cylindrical, the screw rod pile of bottom screw shaped, the stake of described screw rod pile is pushed up and is provided with the cap stake, the upper section area of described cap stake is greater than the section area of pile body, the cap stake upper surface of same level line is provided with the reinforcement bed course, strengthening having built placement in layers above bed course, the embankment that rolls, toe place at embankment is provided with the pin wall.
In such scheme:
The stake footpath of described screw rod pile is 0.3 ~ 0.5m, and the spacing between screw rod pile is 3 ~ 5 times of screw rod pile stake footpath.
The equal diameters of the cylindrical and bottom screw shaped in the top of described screw rod pile, the columniform length in top be no less than the screw rod pile stake long 1/3.
The thread width of described bottom screw shaped is 50～60mm, and the thread end thickness is 50mm, and root part of screw tooth thickness is 100mm, and pitch is 1:0.6～1 with the ratio in stake footpath.
Described cap stake is that top cross-section is greater than the round platform taper of bottom section.
The base diameter of described round platform taper and pile body equal diameters, the round platform taper top diameter be base diameter doubly; The height of described round platform taper is 06 ~ 0.8m.
The thickness of described reinforcement bed course is 0.6m.
Described reinforcement bed course comprises the hardcore bed of upper and lower, the high-strength geo-grid at middle part, is provided with the medium coarse sand bed course between hardcore bed and high-strength geo-grid.
Described reinforcement bed course comprises the hardcore bed of upper and lower, is provided with High strength geogrid between hardcore bed.
Described pile body group is square or triangular arrangement in the horizontal direction.
Compare with stake web frame composite foundations such as the reinforced concrete pile of routine, pile tube, CFG stakes, the utility model has the advantage of:
1, ground adaptability is good, almost is applicable to all soil layers except silt soil, as plastic ~ hard stickiness soil layer, in all have good applicability in the stratum such as close～dense sand stratum, sand gravel layer;
Little to ambient influnence when 2, constructing, the pollutions such as noiselessness, mud;
3, the screw-shaped pile body can fully improve pile side friction, reasons such as soil compaction effect in formation of pile in addition, and bearing capacity of single pile is higher, and the ground disposal cost is comparatively economical.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation of the A embodiment of place one in Fig. 1;
Fig. 3 is the structural representation of the A embodiment of place two in Fig. 1.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, is convenient to be well understood to the utility model, but they do not consist of restriction to the utility model.
The road structure of a kind of screw rod pile stake web frame composite foundation as shown in Figure 1, it comprises the pile body group who passes the soil body, the pile body group is square or triangular arrangement in the horizontal direction.The pile body group is made of the pile body 1 of a plurality of equidistant layouts, and the stake end of pile body 1 enters the bearing stratum in soil.In the present embodiment, pile body 1 is that top is cylindrical, the screw rod pile of bottom screw shaped, the stake of screw rod pile is pushed up and is provided with cap stake 2, the upper section area of cap stake 2 is greater than the section area of pile body 1, cap stake 2 upper surfaces of same level line are provided with strengthens bed course 3, at the embankment 5 of strengthening building placement in layers, rolling above bed course 3, be provided with pin wall 6 at the toe place of embankment 5.
In the present embodiment:
The stake footpath of screw rod pile is 0.3 ~ 0.5m, and the spacing between screw rod pile is 3 ~ 5 times of screw rod pile stake footpath, and the maximum length of screw rod pile can reach the 35m left and right, and the pile concrete model of screw rod pile generally is not less than C20; The equal diameters of the cylindrical and bottom screw shaped in the top of screw rod pile, the columniform length in top be no less than the screw rod pile stake long 1/3; The thread width of bottom screw shaped is 50～60mm, and the thread end thickness is 50mm, and root part of screw tooth thickness is 100mm, and pitch is 1:0.6～1 with the ratio in stake footpath.
The thickness of strengthening bed course 3 is 0.6m, is specially:
Embodiment one:
As shown in Figure 2, strengthen bed course 3 and comprise the thick hardcore bed of top 0.2m 3.1, the hardcore bed 3.1 that bottom 0.3m is thick, the high-strength geo-grid 4.1 at middle part is provided with the thick medium coarse sand bed course 3.2 of 0.05m between hardcore bed 3.1 and high-strength geo-grid 4.1.When laying high-strength geo-grid 4.1, its two ends inflection length is no less than 2m.The ultimate tensile strength of high-strength geo-grid 4.1 is not less than 200kN/m.
Embodiment two:
As shown in Figure 3, strengthen bed course 3 and comprise the thick hardcore bed of top 0.25m 3.1, the hardcore bed 3.1 that bottom 0.3m is thick, be provided with the thick High strength geogrid of 0.05m 4.2 between hardcore bed 3.1, High strength geogrid 4.2 need be paved, launch, middle lattice chamber need be closely knit with rock filling, and its ultimate tensile strength is not less than 200kN/m.
The utility model can make up the deficiency of measures of foundation treatment in prior art, and in conjunction with its advantage, provide a kind of mechanical characteristic good, little to ambient influnence, process that the degree of depth is large, the net structure roadbed foundation structure of screw rod pile stake of expense less expensive, the subgrade construction ground that can be used for high-speed railway and high-grade highway is processed.
Claims (10)
1. the road structure of a screw rod pile stake web frame composite foundation, it comprises the pile body group who passes the soil body, described pile body group is made of the pile body (1) of a plurality of equidistant layouts, the stake end of described pile body (1) enters the bearing stratum in soil, it is characterized in that: described pile body (1) is cylindrical for top, the screw rod pile of bottom screw shaped, the stake of described screw rod pile is pushed up and is provided with cap stake (2), the upper section area of described cap stake (2) is greater than the section area of pile body (1), cap stake (2) upper surface of same level line is provided with strengthens bed course (3), strengthening having built placement in layers above bed course (3), the embankment that rolls (5), toe place at embankment (5) is provided with pin wall (6).
2. the road structure of screw rod pile stake web frame composite foundation according to claim 1 is characterized in that: the stake footpath of described screw rod pile is 0.3 ~ 0.5m, and the spacing between screw rod pile is 3 ~ 5 times of screw rod pile stake footpath.
3. the road structure of screw rod pile stake web frame composite foundation according to claim 1 and 2 is characterized in that: the equal diameters of the cylindrical and bottom screw shaped in the top of described screw rod pile, the columniform length in top be no less than the screw rod pile stake long 1/3.
4. the road structure of screw rod pile stake web frame composite foundation according to claim 3, it is characterized in that: the thread width of described bottom screw shaped is 50～60mm, the thread end thickness is 50mm, and root part of screw tooth thickness is 100mm, and pitch is 1:0.6～1 with the ratio in stake footpath.
5. the road structure of screw rod pile stake web frame composite foundation according to claim 1 is characterized in that: described cap stake (2) is the round platform taper of top cross-section greater than the bottom section.
6. the road structure of screw rod pile stake web frame composite foundation according to claim 5 is characterized in that: the base diameter of described round platform taper and pile body (1) equal diameters, the round platform taper top diameter be 2 times of base diameter; The height of described round platform taper is 06 ~ 0.8m.
7. the road structure of screw rod pile stake web frame composite foundation according to claim 1, it is characterized in that: the thickness of described reinforcement bed course (3) is 0.6m.
8. the road structure of according to claim 1 or 7 described screw rod pile stake web frame composite foundations, it is characterized in that: described reinforcement bed course (3) comprises the hardcore bed (3.1) of upper and lower, the high-strength geo-grid (4.1) at middle part, is provided with medium coarse sand bed course (3.2) between hardcore bed (3.1) and high-strength geo-grid (4.1).
9. the road structure of according to claim 1 or 7 described screw rod pile stake web frame composite foundations, it is characterized in that: described reinforcement bed course (3) comprises the hardcore bed (3.1) of upper and lower, is provided with High strength geogrid (4.2) between hardcore bed (3.1).
10. the road structure of screw rod pile stake web frame composite foundation according to claim 1, it is characterized in that: described pile body group is square or triangular arrangement in the horizontal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320302519 CN203270559U (en) | 2013-05-29 | 2013-05-29 | Roadbed structure of screw pile network structure composite foundation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320302519 CN203270559U (en) | 2013-05-29 | 2013-05-29 | Roadbed structure of screw pile network structure composite foundation |
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| Publication Number | Publication Date |
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| CN203270559U true CN203270559U (en) | 2013-11-06 |
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| CN 201320302519 Expired - Lifetime CN203270559U (en) | 2013-05-29 | 2013-05-29 | Roadbed structure of screw pile network structure composite foundation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774515A (en) * | 2014-02-20 | 2014-05-07 | 中铁第四勘察设计院集团有限公司 | High speed railway embankment structure in salty soil regions |
| CN106283953A (en) * | 2016-09-15 | 2017-01-04 | 中铁第四勘察设计院集团有限公司 | Medium-and low-speed maglev two-wire embankment location pile foundation combined type support rail beam transition section structure |
| RU2700098C2 (en) * | 2017-05-15 | 2019-09-12 | Альберт Васильевич Горностаев | Railway rail track |
| CN115162377A (en) * | 2022-07-28 | 2022-10-11 | 四川公路桥梁建设集团有限公司 | Variable-section combined slide-resistant pile with upper part and lower part being circular and construction method thereof |
-
2013
- 2013-05-29 CN CN 201320302519 patent/CN203270559U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774515A (en) * | 2014-02-20 | 2014-05-07 | 中铁第四勘察设计院集团有限公司 | High speed railway embankment structure in salty soil regions |
| CN106283953A (en) * | 2016-09-15 | 2017-01-04 | 中铁第四勘察设计院集团有限公司 | Medium-and low-speed maglev two-wire embankment location pile foundation combined type support rail beam transition section structure |
| RU2700098C2 (en) * | 2017-05-15 | 2019-09-12 | Альберт Васильевич Горностаев | Railway rail track |
| CN115162377A (en) * | 2022-07-28 | 2022-10-11 | 四川公路桥梁建设集团有限公司 | Variable-section combined slide-resistant pile with upper part and lower part being circular and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180330 Address after: 430063 Wuchang, Hubei, Yang Park, Peace Avenue, No. 745 Patentee after: GEOTECHNICAL ENGINEERING CO.,LTD. OF CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP CO.,LTD. Address before: 430063 Wuchang, Hubei, Yang Park, Peace Avenue, No. 745 Patentee before: CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430063 No. 745 Heping Avenue, Wuchang, Hubei, Wuhan Patentee after: China Railway Siyuan Group Engineering Construction Co.,Ltd. Address before: 430063 No. 745 Heping Avenue, Wuchang, Hubei, Wuhan Patentee before: GEOTECHNICAL ENGINEERING CO.,LTD. OF CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP CO.,LTD. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |