CN203684212U - Simple foundation processing pile - Google Patents
Simple foundation processing pile Download PDFInfo
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- CN203684212U CN203684212U CN201420025931.2U CN201420025931U CN203684212U CN 203684212 U CN203684212 U CN 203684212U CN 201420025931 U CN201420025931 U CN 201420025931U CN 203684212 U CN203684212 U CN 203684212U
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- pile
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- jet grouting
- rotary jet
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Abstract
The utility model discloses a simple foundation processing pile which comprises a rotary jet grouting pile body and a cast-in-place pile body. The rotary jet grouting pile body and the cast-in-place pile body are coaxial. A mortise is formed in the top of the rotary jet grouting pile body, and the cast-in-place pile body is located on the rotary jet grouting pile body and connected with the rotary jet grouting pile body in the mortise joint mode. The problems that in the prior art, a pile main body of the rotary jet grouting pile body is low in strength, and superficial portions of the pile main body are prone to being damaged after the pile main body bears loads; the mortise of the cast-in-place pile body is difficult to form when the stratum conditions are complex, and prone to being collapsed in the construction process to form reduction and breaking of the pile main body are solved. The rotary jet grouting pile body and the cast-in-place pile body which are made of different materials are connected together in the mortise joint mode, the joint portions are reliable in connection, the integrality is high, the vertical bearing capacity and the horizontal shearing resistance are high, material waste is avoided, and the construction cost is reduced. The simple foundation processing pile is reliable in pile body connection, high in integrality and high in vertical bearing capacity and horizontal shearing resistance, and the pile bodies are not prone to being damaged when being pressed; the simple foundation processing pile has the advantages of being high in stratum adaptability, meanwhile, easy and convenient to construct, low in environment pollution, low in cost and the like.
Description
Technical field
The utility model belongs to the foundation treatment technology field in civil engineering, is specifically related to a kind of ground and processes simple and easy stake.
Background technology
At present, rotary churning pile and cast-in-place concrete pile are all widely used in various grounds processing and Foundation Design.Rotary churning pile blends the soil body by high pressure jet stream cutting becomes scattered seed shape, itself and cement grout are mixed, solidify rear formation and have the cylindric induration of some strength, play the effect of soil mass consolidation, having the stratum soil property of being subject to condition affects littlely, is suitable for the advantages such as pile.But because rotary churning pile pile shaft material is the mixture of cement and foundation soil, pile strength is lower, under building load effect, pile body superficial part easily produces local compression and destroys, and the bearing capacity of single pile or composite foundation is reduced; And cast-in-place concrete pile pile strength is higher, but it is larger that its work progress is affected by Site soil condition, especially below groundwater table, in the time that soil property is softer or run into sand gravel layer, pore-forming difficulty, easily produces collapse hole, forms stake shortea or broken pile, the quality of impact stake, the cost of castinplace pile is relatively high simultaneously.
Summary of the invention
For the defect existing in above-mentioned prior art or deficiency, the purpose of this utility model is, provide a kind of ground to process simple and easy stake, this ground is processed simple and easy stake and has been solved in prior art: (1) rotary churning pile pile strength is lower, is subject to easily at pile body superficial part, the problem of destroying to occur after load; (2) in formation condition complexity, especially, below groundwater table, there is soft layer or sand gravel layer in castinplace pile, is difficult to pore-forming, is easy to collapse hole and forms the quality problems such as stake shortea and broken pile in work progress; (3) utilize joggle that the pile body of rotary churning pile and two kinds of different materials of castinplace pile is linked together, joint area connects reliable, and globality is strong, and vertical bearing capacity and horizontal shearing resistance are all higher.(4) avoid waste of material, reduced construction costs.
In order to realize above-mentioned task, the technical scheme that the utility model adopts is:
Ground is processed a simple and easy stake, comprises coaxial rotary churning pile and castinplace pile, and wherein, described rotary churning pile top has mortise, and described castinplace pile is positioned at the top of rotary churning pile and connects by joggle mode between the two.
Further, the axle center of described mortise and the axis coinciding of rotary churning pile, mortise diameter 350～400mm, dark 300～350mm.
Further, described rotary churning pile top is 1.5～2 times of rotary churning pile stake footpaths far from the distance on ground, top.
Compare with cast-in-place concrete pile with existing rotary churning pile, the utlity model has following advantage:
(1) easy construction.Because filling pile construction carries out at foundation soil superficial part, in construction, be subject to groundwater table and formation influence less, avoided in the time that soil property is softer or run into sand gravel layer, pore-forming must adopt mud off, easily produces collapse hole and causes the quality problems such as stake shortea or broken pile.
(2) shortened the Foundation Treatment duration.Under normal circumstances, jet grouting pile construction, after complete 28 days, can carry out next procedure construction.Adopt combined material stake, because castinplace pile pile body intensity is higher, at filling pile construction complete 7～10 days, can carry out next procedure construction.
(3) utilize joggle that the pile body of rotary churning pile and two kinds of different materials of castinplace pile is joined together to form to combined material stake, can give full play to the two advantage, avoid shortcoming separately.Joint area connects reliable, and globality is strong, and vertical bearing capacity and horizontal shearing resistance are all higher.
(4) ground is processed simple and easy pile capacity.Can effectively load be passed to the rotary churning pile under it, then pass to ground deep bearing stratum by rotary churning pile.
Accompanying drawing explanation
Fig. 1 is the structural representation that ground of the present utility model is processed simple and easy stake.
Fig. 2 is that the A-A of Fig. 1 is to view.
Fig. 3 is Singe Pile with Static Load Experiment Q～s curve in embodiment of the present utility model.
Each label implication in figure: 1-foundation soil, 2-castinplace pile, 3-rotary churning pile, 4-stake end absolute altitude.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The specific embodiment
Referring to Fig. 1, Fig. 2, ground of the present utility model is processed simple and easy stake, comprises coaxial rotary churning pile 3 and castinplace pile 2, and wherein, described rotary churning pile 3 tops have mortise, the axis coinciding of the axle center of mortise and rotary churning pile 3, mortise diameter 350～400mm, dark 300～350mm.Castinplace pile 2 is positioned at the top of rotary churning pile 3 and connects by joggle mode between the two.
For the beneficial effects of the utility model are described, inventor provides following embodiment.
The long 45.1m of certain residential building, wide 17.7m, ground is 7 layers above, brick mix structure, steel concrete raft foundation, embedded depth of foundation is-2.5m.Ground is processed and is adopted ground of the present utility model to process simple and easy stake, design stake footpath 700mm, and pilespacing 1.7m, is arranged in squares, and single pile design length is 6.5m.Ground is laid the thick natural grading sand-gravel cushion of 500mm thereon after processing simple and easy pile driving construction and completing.Designing requirement bearing capacity of single pile Rk=300kN.Specific construction process is as follows:
(1) carry out unwrapping wire location according to the pile layout of design.
(2) boring.
(3) intubate.By jet pipe insert into stratum desired depth.
(4) cement paste good premixing is injected in foundation soil by high-pressure slip-casting pipe, when slip casting, the rotation of slip casting tube edge, limit promote.
(5) in the time that distance is shut down face 1.2m, stop slip casting until the construction of rotary churning pile stake top, extract immediately the plants such as Grouting Pipe and rinse well, so far, rotary churning pile 3 has been constructed.
(6) rotary churning pile 3 was constructed after 3 days, and above each rotary churning pile, the soil body carries out cast-in-place concrete pile pore-forming, and pore-forming mode adopts hand excavation, and pore size is 700mm, hole depth 1.5m; The axis coinciding of rotary churning pile and castinplace pile, vertical stressed with the stake of castinplace pile combined material to guarantee rotary churning pile.
(7) dig mortise in the stake top bit of each rotary churning pile, mortise axle center and rotary churning pile center superposition, mortise diameter 350mm, dark 300mm, then cleans out mortise and inner hole deposition slag.
(8) perfusion castinplace pile.
Filling pile construction completed after 28 days, extracted 3 engineering piles and had carried out Singe Pile with Static Load Experiment, and Q～s curve as shown in Figure 3.Stopping under load 600kN pressure, settling amount is respectively 5.611mm, 9.042mm and 7.157mm, and bearing capacity of single pile Rk >=300kN, meets design requirement, and consolidation effect is good.
Claims (3)
1. a ground is processed simple and easy stake, it is characterized in that, comprise coaxial rotary churning pile (3) and castinplace pile (2), wherein, described rotary churning pile (3) top has mortise, and described castinplace pile (2) is positioned at the top of rotary churning pile (3) and connects by joggle mode between the two.
2. ground as claimed in claim 1 is processed simple and easy stake, it is characterized in that the axis coinciding of the axle center of described mortise and rotary churning pile (3), mortise diameter 350～400mm, dark 300～350mm.
3. ground as claimed in claim 1 is processed simple and easy stake, it is characterized in that, described rotary churning pile (3) top is 1.5～2 times of rotary churning pile stake footpaths far from the distance on ground, top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420025931.2U CN203684212U (en) | 2014-01-15 | 2014-01-15 | Simple foundation processing pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420025931.2U CN203684212U (en) | 2014-01-15 | 2014-01-15 | Simple foundation processing pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203684212U true CN203684212U (en) | 2014-07-02 |
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ID=51006135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420025931.2U Expired - Fee Related CN203684212U (en) | 2014-01-15 | 2014-01-15 | Simple foundation processing pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203684212U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685275A (en) * | 2019-09-18 | 2020-01-14 | 深圳市综合交通设计研究院有限公司 | New and old combined foundation pile in high-groundwater-level complex construction environment and in-situ pile repairing method |
-
2014
- 2014-01-15 CN CN201420025931.2U patent/CN203684212U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110685275A (en) * | 2019-09-18 | 2020-01-14 | 深圳市综合交通设计研究院有限公司 | New and old combined foundation pile in high-groundwater-level complex construction environment and in-situ pile repairing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20150115 |
|
| EXPY | Termination of patent right or utility model |