CN202787246U - Flexible pile and drainage body integral combination pile - Google Patents
Flexible pile and drainage body integral combination pile Download PDFInfo
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- CN202787246U CN202787246U CN 201220377075 CN201220377075U CN202787246U CN 202787246 U CN202787246 U CN 202787246U CN 201220377075 CN201220377075 CN 201220377075 CN 201220377075 U CN201220377075 U CN 201220377075U CN 202787246 U CN202787246 U CN 202787246U
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Abstract
The utility model relates to a flexible pile and drainage body integral combination pile, the core of a flexible pile is a cement soil pile, the pile periphery is provided with scattered material pile bodies, 3-8 stereo drainage bodies are uniformly disposed in the scattered material pile bodies, the stereo drainage bodies comprise vertical drainage long pipes and a plurality of transverse drainage short pipes disposed along the vertical drainage long pipe bodies, the vertical drainage long pipes and the transverse drainage short pipes are communicated and in sealing connection; the tops of the vertical drainage long pipes are embedded in a drainage cushion layer, and the bottoms are connected with opening prefabricated pile tips. The flexible pile and drainage body integral combination pile is advantaged by low cost, short pre-pressing period, little settlement after construction, high construction speed, etc.
Description
Technical field
The utility model is related to a kind of flexible pile and displacement hull consubstantiality built pile, and the flexible pile and displacement hull consubstantiality built pile of three-dimensional drain are set in more particularly to a kind of discrete material pile week.Belong to field of foundation treatment, it is adaptable to Soft Ground engineering.
Background technology
China's weak soil is widely distributed, particularly in coastal area and interior Di Hu rivers sedimentary facies area, Soft Soil Layer physico-mechanical properties is poor, and soil nature has the features such as weak soil has slow high water content, weak water penetration, consolidation rate, macrovoid ratio, high-compressibility, low shearing strength, thixotropy, rheological characteristic.High-grade highway is built on soft soil foundation and building first has to carry out treatment of soft foundation, is settled with increasing the stability of ground and reducing.
Common foundation treatment mode has draining concretion method, compound foundation method, changes and fill out Sand-gravel-cushion Technioue, preloading method, deep dynamic compaction inside pile hole etc., and two kinds can be classified as in a word：One class is discharging consolidation preloading method, and another kind of is composite foundation method.
Draining concretion method is suitable to subsoil, is that sand drain is first set in ground（Sand wick or plastic draining belt）Deng vertical drainage body, then gradually loaded using building weight grading itself；Or ground on the scene loads precompressed in advance before building construction, the pore water in the soil body is discharged, is gradually consolidated, ground is settled, while the method that intensity is stepped up.The method is usually used in solving sedimentation and the stable problem of soft clay foundation, can make ground be deposited in loading precompressed during be basically completed or it is most of complete, building is produced excessive sedimentation and differential settlement during use.Meanwhile, ground soil classifiction can be increased, so as to improve the bearing capacity and stability of ground.
Compound foundation method is divided into flexible pile composite foundation and rigid pile composite foundation again.Wherein, flexible pile composite foundation is a kind of effective ways of reinforcing flexible foundation, can significantly improve foundation bearing capacity, improves the deformation characteristic of ground, reduces the sedimentation that may occur under load action and differential settlement；Wherein cement mixing pile is due to the features such as construction site requires relatively low, technical maturity, relatively low cost, it is most widely used in China, cement mixing pile is to force to mix and stir by weak soil and cement on the spot in earth formation deep by special deep-layer stirring machinery, weak soil is hardened and is improved foundation strength.Two kinds of wet method and dry method can be divided into by material spray regime, wet method is stirred based on cement mortar, it is easy to stirred again, soil cement firm time is longer；Dry method is based on cement powder, and soil cement firm time is shorter, can improve the intensity between stake, but mixing uniformity is not good enough, it is difficult to which whole process is stirred again, current wet method is using more popular under appropriate conditions.The method that the combination application such as sand drain, plastic draining board draining concretion method and compound foundation method are set in the inter-pile soils such as cement mixing pile, pile for prestressed pipe, such as draining powder-spray pile are had at present（2D engineering methods）Deng also achieving relatively good engineering effort under suitable engineering background and geological conditions.
In summary, need badly at present and invent a kind of integrate draining consolidation and the length of both compound foundation methods, the setting of three-dimensional drain adds discharging consolidation effect, can effectively reduce treatment of soft foundation cost, shortens the precompressed phase and reduce the flexible pile and displacement hull consubstantiality built pile of settlement after construction.
The content of the invention
The purpose of this utility model is to provide a kind of flexible pile and displacement hull consubstantiality built pile, and low cost, the precompressed phase is short, settlement after construction is few, speed of application is fast.
In order to realize above-mentioned technical purpose, the utility model employs following technical scheme：
A kind of flexible pile and displacement hull consubstantiality built pile, it is characterised in that including flexible pile stake core, and be arranged in its all discrete material pile body, discrete material pile body three-dimensional drain is set.
Foregoing flexible pile and displacement hull consubstantiality built pile, it is characterised in that described flexible pile is cement earth pile, the discrete material of discrete material pile body uses rubble, gravel or medium coarse sand.
Foregoing flexible pile and displacement hull consubstantiality built pile, it is characterised in that multiple transverse drainage short tubes that three-dimensional drain includes vertical drainage long tube and vertically draining long tube pipe shaft is set, both are mutually communicated, and are tightly connected.
Transverse drainage short tube outsourcing anti-filter geotextiles, using flexible porous tube, PVC, PE, HDPE or steel pipe, the pipe whole body is with holes.
The long bottom of the tube of vertical drainage is connected with opening precast pile tip, and top is closed and is embedded in drainage blanket using lid with holes.
Foregoing flexible pile and displacement hull consubstantiality built pile, it is characterised in that three-dimensional drain is uniformly arranged on the centre position of discrete material pile body, quantity 3-8 roots are fixed using the fixed steel disc of annular.
Foregoing flexible pile and displacement hull consubstantiality built pile, it is characterised in that opening precast pile tip, can be made of armored concrete or steel plate.
The characteristics of the utility model has following and beneficial effect：The setting integrate draining consolidation and the length of both compound foundation methods of all discrete material pile bodies of flexible pile and three-dimensional drain, the structure of three-dimensional drain further effectively improves the effect of discharging consolidation simultaneously, in terms of reduction treatment of soft foundation cost, shortening precompressed phase and reduction settlement after construction, compared with prior art with preferable technical economic benefit.
Brief description of the drawings
Fig. 1 is the utility model flexible pile and displacement hull consubstantiality built pile profilograph；
Fig. 2 is flexible pile and displacement hull consubstantiality built pile cross-sectional view；
In figure：1- opening precast pile tips, 2- discrete material pile bodies, 3- flexible piles stake core, 4- transverse drainage short tubes, 5- vertical drainage long tubes, 6- horizontal drainage passages, 7- drainage blankets, the pre-buried fixing device of 8- pile tops.
Embodiment
Specific embodiment
It is not repeated in the detailed design parameter and construction requirement of flexible pile stake core, discrete material pile body and pile-top cushion course, present embodiment, emphasis illustrates that the utility model is related to the embodiment of structure.
Fig. 1 is the utility model flexible pile and displacement hull consubstantiality built pile profilograph, Fig. 2 is flexible pile and displacement hull consubstantiality built pile cross-sectional view, shown in reference picture 1,2, a kind of flexible pile and displacement hull consubstantiality built pile, flexible pile stake 3 weeks of core set discrete material pile body 2, three-dimensional drain is set in discrete material pile body, and the bottom of three-dimensional drain is connected with opening precast pile tip 1 by the pre-buried fixing device 8 of pile top.
Flexible pile stake core 3 is using a diameter of 500mm cement mixing pile, and using No. 32.5 Portland cements, the ratio of mud 0.55, cement mixing content is 55kg/m, and two pressure spray process are stirred using two.Discrete material pile body 2 internal diameter 500mm, external diameter 1100mm, in a ring, using common driven cast-in-place pile equipment construction, discrete material uses rubble.
Three-dimensional drain is made up of the transverse drainage short tube 4 and vertical drainage long tube 5 for being mutually communicated, being vertical setting, the vertically pipe shaft interval setting of draining long tube 5 of transverse drainage short tube 4, one group is set every 2m, both are supported together with antirust turn supporting welding colligation in vertical drainage long tube 5 by the antirust turn in transverse drainage short tube 4, and tie point is covered by the anti-filter geotextiles of flexible porous tube periphery.
The diameter 30mm of transverse drainage short tube 4, length 120mm, outsourcing anti-filter geotextiles, material use flexible porous tube；Vertical drainage long tube diameter 550mm, bottom is connected with opening precast pile tip 1 by the pre-buried fixing device of pile top, and top is closed using lid with holes and is embedded in 250mm in drainage blanket 7.
Three-dimensional drain is arranged on the horizontal direction centre position of discrete material pile body 2（I.e. whole three-dimensional drains are located on same concentric circles）, the quantity of three-dimensional drain is 3-8（Fig. 2 show the example of arrangement 8）, arranged along the inner homogeneous of discrete material pile body 2, and fixed using the fixed steel disc of annular.
Opening precast pile tip can be made of armored concrete or steel plate, and the opening precast pile tip 1 of the present embodiment is prefabricated in precast plant using armored concrete, and concrete grade uses C30, and reinforcing bar uses HRB400.And the pre-buried fixing device 8 being connected with the bottom of vertical drainage long tube 5.
The construction procedure of a kind of flexible pile of the present utility model and displacement hull consubstantiality built pile is as follows：
（1）The construction of flexible pile stake core 3 is first carried out according to designing pile length on construction ground；
（2）At precasting yard or scene, or by producer's custom-made, three-dimensional drain is connected according to design requirement, the bottom of vertical drainage long tube 5 is connected with precast pile tip 1, fixed using the fixed steel disc of annular；
（3）Using common driven cast-in-place pile equipment, under the traction of conductor rope, first three-dimensional drain is introduced in annular immersed tube, according to designing pile length, immersed tube is squeezed into ground；
（4）Pour into rubble into annular steel immersed tube, and shake tube drawing, it is necessary to when aerial feed supplement, complete the construction of discrete material pile body 2；
（5）After flexible pile stake core 3 reaches design strength requirement, carry out the construction of top bed course 7, and horizontal drainage passage 6 can be set in bed course 7.
Claims (7)
1. a kind of flexible pile and displacement hull consubstantiality built pile, it is characterised in that including flexible pile stake core and be arranged in its all discrete material pile body, discrete material pile body and set three-dimensional drain.
2. flexible pile according to claim 1 and displacement hull consubstantiality built pile, it is characterised in that described flexible pile is cement earth pile, the discrete material of discrete material pile body uses rubble, gravel or medium coarse sand.
3. flexible pile according to claim 1 and displacement hull consubstantiality built pile, it is characterised in that multiple transverse drainage short tubes that three-dimensional drain includes vertical drainage long tube and vertically draining long tube pipe shaft is set, both insertions, and be tightly connected.
4. flexible pile according to claim 1 and displacement hull consubstantiality built pile, it is characterised in that transverse drainage short tube outsourcing anti-filter geotextiles, are flexible porous tube, PVC, PE, HDPE or steel pipe, the pipe whole body is with holes.
5. flexible pile according to claim 1 and displacement hull consubstantiality built pile, it is characterised in that the long bottom of the tube of vertical drainage is connected with opening precast pile tip, and top is closed and is embedded in drainage blanket using lid with holes.
6. flexible pile according to claim 1 and displacement hull consubstantiality built pile, it is characterised in that three-dimensional drain is uniformly arranged on the centre position of discrete material pile body, quantity 3-8 roots are fixed using the fixed steel disc of annular.
7. flexible pile according to claim 1 and displacement hull consubstantiality built pile, it is characterised in that opening precast pile tip, can be made of armored concrete or steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220377075 CN202787246U (en) | 2012-08-01 | 2012-08-01 | Flexible pile and drainage body integral combination pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220377075 CN202787246U (en) | 2012-08-01 | 2012-08-01 | Flexible pile and drainage body integral combination pile |
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| Publication Number | Publication Date |
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| CN202787246U true CN202787246U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220377075 Expired - Lifetime CN202787246U (en) | 2012-08-01 | 2012-08-01 | Flexible pile and drainage body integral combination pile |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790151A (en) * | 2014-01-23 | 2014-05-14 | 江苏中瑞路桥建设有限公司 | Soft soil roadbed drainage prepressing rear blocking structure and construction method |
| CN103821139A (en) * | 2014-02-11 | 2014-05-28 | 浙江交通职业技术学院 | Reamed carrier and stiffness core multi-component composite pile and soft soil foundation strengthening construction method |
| CN104234032A (en) * | 2014-09-01 | 2014-12-24 | 德州市公路工程总公司 | Y-shaped stereoscopic drain board and stiffness core discrete material composite pile and construction method |
| CN105648872A (en) * | 2016-02-03 | 2016-06-08 | 济南轨道交通集团有限公司 | Device and construction method for prefabricated seepage column |
-
2012
- 2012-08-01 CN CN 201220377075 patent/CN202787246U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103790151A (en) * | 2014-01-23 | 2014-05-14 | 江苏中瑞路桥建设有限公司 | Soft soil roadbed drainage prepressing rear blocking structure and construction method |
| CN103790151B (en) * | 2014-01-23 | 2016-08-31 | 神州建设集团有限公司 | Plugging structure and construction method after a kind of soft soil roadbed draining precompressed |
| CN103821139A (en) * | 2014-02-11 | 2014-05-28 | 浙江交通职业技术学院 | Reamed carrier and stiffness core multi-component composite pile and soft soil foundation strengthening construction method |
| CN104234032A (en) * | 2014-09-01 | 2014-12-24 | 德州市公路工程总公司 | Y-shaped stereoscopic drain board and stiffness core discrete material composite pile and construction method |
| CN104234032B (en) * | 2014-09-01 | 2015-11-18 | 德州市公路工程总公司 | The construction method of a kind of Y shape three-dimensional band drain strength core discrete material composite pile |
| CN105648872A (en) * | 2016-02-03 | 2016-06-08 | 济南轨道交通集团有限公司 | Device and construction method for prefabricated seepage column |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |