CN108978639A - A kind of powder seif-citing rate stake and its pile making method - Google Patents
A kind of powder seif-citing rate stake and its pile making method Download PDFInfo
- Publication number
- CN108978639A CN108978639A CN201810934806.6A CN201810934806A CN108978639A CN 108978639 A CN108978639 A CN 108978639A CN 201810934806 A CN201810934806 A CN 201810934806A CN 108978639 A CN108978639 A CN 108978639A
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- pile
- powder
- seif
- stake
- citing rate
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of powder seif-citing rate stakes, consist of the following compositions at pile material, original soil, mountain skin soil, cement, seif-citing rate powder agent.The pile making method of the powder seif-citing rate stake be it is such, using augers, pile powder body material is poured into stake holes, drops hammer and hit reality, ram by pore-forming, and ramming times are no less than 5 times.Particle further refines expansion after powder seif-citing rate stake of the invention is produced from the water suction of stress solid powder-deposit, hydroxide is changed by oxide and compresses compacted pile peripheral earth, and solid phase, induration are generated with grogs, reduce its porosity, contained humidity reduces, cohesive force increases, and then the frictional force of reinforcing soil pile and periphery soil is improved, bearing power increase, deflection reduces, novel powder seif-citing rate reinforcing soil pile is formed, homogeneous foundation is made to become composite foundation.
Description
Technical field
The present invention relates to a kind of building stake, in particular to a kind of soft subgrade treatment powder seif-citing rate stake belongs to building work
Journey technical field.
Background technique
Currently, for the roadbed foundation stabilization measure of highway soft soil area, mainly using reinforcing soil pile as technical way, this
Kind of method the problems such as there are at high cost, Bearing Capacity of Composite Foundation is lower, and High-filled emkankment valve pit subsidence is obvious.Reinforced soft soil ground soil
Stake processing mode includes dust pile compositing foundation, soil-cement pile composite foundation, mixing pile composite foundation etc..Lime soil pile and soil cement
Pile composite foundation is filled out with a certain amount of dirt and soil cement, is carried out made of hammering compacting by auger or Luoyang Spade pore-forming
Composite foundation, stake spacing are mostly 0.8m~1.5m, adjust spacing by replacement rate, reach the foundation bearing capacity that design needs.
Due to lime soil pile and cement earth pile the high ground of underground water often can not pilot hole, since native water content is high below level of ground water,
It is undesirable to tamp effect.Cement mixing method punishment effect is obvious, effectively punishes depth up to 12m or so, and construction technology is mature,
Use experience is abundant, and still, the construction technical requirement of cement mixing pile is higher, is easy to appear the quality accidents such as broken pile, concealment
Relatively strong, quality is not easily controlled, in the close above layer of sand constructional difficulties.Since above method reinforcing soil pile bearing capacity is not high, Gu Chu
Bearing Capacity of Composite Foundation after reason is not often also high, and processing is generally applied to mostly in 120~200kPa or so, architectural engineering more
The soft soil foundation of the much lower layer building of level of ground water.For this purpose, being badly in need of innovation technical measures, pile making method is improved,
To reduce cost of investment, facilitate construction, shorten the construction period, the bearing capacity of composite foundation is improved, General Promotion highway foundation is reinforced
It is horizontal.
Summary of the invention
The purpose of the present invention is being directed to soft soil foundation characteristic, and highway subgrade feature is combined, a kind of powder seif-citing rate is provided
Stake makes homogeneous foundation become composite foundation, and bearing power increase, deflection reduces, to achieve the purpose that reinforcing.
The present invention solve its technical problem adopt the technical scheme that it is such.
A kind of powder seif-citing rate stake is expressed as, original soil in mass ratio at the composition of pile material: mountain skin soil: cement: seif-citing rate
Powder agent=(0.35~0.4): (0.5~0.6): (0.04~0.07): (0.01~0.015, wherein mountain skin grogs diameter is small
In 25mm；The composition of seif-citing rate powder agent is expressed as in mass ratio, light-burned MgO: mushroom is carefully over-fired CaO: blast furnace iron powder: flyash:
Expansive agent for cement slurry=(0.25~0.35): (0.14~0.16): (0.25~0.35): (0.15~0.25): (0.04~0.06)；
Pile powder body material is obtained after mixing at pile material, is used for pile.
The pile making method of the powder seif-citing rate stake be it is such, pile drill when use augers, drilling diameter
Pile powder body material is poured into stake holes, rams, hit reality by generally 0.35~0.40m.Foundation is hit real report and is determined in formation of pile
Appropriate immersion method can be used when water content of soil is too low for optimum moisture content.When water content of soil is excessively high, dried.
Pile powder body material gradually absorbs the moisture in soft base, and seif-citing rate gradually discharges, it is soft soil roadbed in moisture gradually shift disappearance,
Void ratio is gradually reduced, and the soil body on stake periphery is compacted by powder seif-citing rate stake, and after 28 days, powder seif-citing rate stake expanded diameter can be with
Reach 0.5m or more, Bearing Capacity of Composite Foundation significantly improves.
Material used in the present invention can be bought in addition to having special define in market, what no special requirement required
Material can select any specification model.
The present invention obtain it is following the utility model has the advantages that
Soft soil foundation composite bear ability significantly improves after applying the present invention, and conventional construction can be used in powder seif-citing rate pile composite foundation
Mechanical equipment is constructed, and in ooze roadbed section, pond, seashore, level of ground water superelevation section, pile powder body material is poured into stake
Hole drops hammer and hits reality, and powder body material gradually absorbs the moisture in soft base, and seif-citing rate gradually discharges, it is soft soil roadbed in moisture gradually
Transfer disappears, and void ratio is gradually reduced, and cohesive force increases, and the soil body on stake periphery is compacted by powder seif-citing rate stake, and then improves and add
Gu the frictional force of native stake and periphery soil.Novel powder seif-citing rate reinforcing soil pile is formed, so that homogeneous foundation is become composite foundation, holds
It carries power to improve, deflection reduces, to achieve the purpose that reinforcing.In addition, the three-dimensional powder due to pile body acts on, stake subsoil is also same
When be squeezed and fine and close, the bearing capacity of bottom can also correspondingly increase.As time goes by, seif-citing rate gradually discharges, compoundly
Base bearing capacity is higher and higher.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of ready-made powder seif-citing rate stake.
Fig. 2 is the transverse sectional view of Fig. 1.
Figure label representative is meant that:
1, powder mixture.
Specific embodiment
The following examples are intended to illustrate the invention.
Embodiment
As shown in Figure 1, a kind of powder seif-citing rate stake main view, Fig. 2 are the transverse sectional views of Fig. 1.Data is surveyed in base area, really
Thickness of soft soil is determined, drilling depth is greater than thickness of soft soil 0.5m, tamps bottom hole, and the composition of the pile powder body material is pressed
It is as follows according to mass ratio, original soil: mountain skin soil: cement: seif-citing rate powder agent=(0.35~0.4): (0.5~0.6): (0.04~
0.07): (0.01~0.015)；Wherein, mountain skin grogs diameter is less than 25mm；Seif-citing rate powder agent composition is according to mass ratio
For light-burned MgO(0.25~0.35): mushroom is carefully over-fired CaO(0.14~0.16): blast furnace iron powder (0.25~0.35): flyash
(0.15~0.25): swelling agent (0.04~0.06).Pile powder body material is obtained after mixing what is matched above at pile material, just
It can be used for pile.
The pile making method of the powder seif-citing rate stake be it is such, pile drill when use augers, drilling diameter
For 0.35~0.40m, pile powder body material is poured into stake holes, drops hammer and hits reality, filler ramming times are each filler 0.25m3, or
200cm in hole, ramming times are no less than 5 times, falling distance of rammer >=1.5m, and when tamping in hole, hammer ram proposes aperture.
Optimum moisture content is determined according to real report is hit, and appropriate immersion method can be used when native water content is too low.Work as the soil body
When water content is excessively high, dried.
Specifically, powder seif-citing rate pile constructing process process is as follows:
Putting stake position → pore-forming → powder body material mix, → compacting bottom hole → filler → ram bind → pile → conserve → cuts stake
Head, specifically includes the following steps:
(1) drilling machine is in place and straightening: drilling machine being moved to specified position, by drill bit centering, and guarantees that borer drill rod is vertical.
(2) creep into: after drilling machine levelling, starting main motor drilling, drill bit enters ground and starts to creep into.
(3) it after drilling machine sinking reaches projected depth, rotates and proposes after drilling machine idle running 30s.
(4) seif-citing rate powder body material mix: by design mixture proportion (original soil, mountain skin soil, cement, seif-citing rate powder agent, every meter
Dosage match ratio is that 0.38:0.55:0.06:0.01 is (190kg:275kg:30kg:5kg).
Earth material water content should be close to optimum moisture content.Qualified powder material will be examined to use machine mixing, it is desirable that mixture
Stir evenly solid colour, water content is close to optimum moisture content.
(5) pile: after tamping machine is in place, hammer ram freely falls into bottom hole, first empty rammer bottom hole 1~2 time, then according to field condition
A certain amount of mountain skin stone compacting bottom hole basis can be inserted, then carries out formal filler, filler is using tamping in hole, small loading
Machine cooperation is banketed, and hammers weight 520kg into shape, and small loader dipper capacity is 0.75m3.Steel plate is welded in small loader scraper bowl, control is returned every time
The amount of filling out is no more than 0.25m3.It is adjusted in construction according to site operation detection data.Falling distance of rammer need > 1.5m.It rams every time
When, hammer ram need to propose aperture.
(6) stake top reserves 200mm thickness subsoil soil, removes after all constructing to stake.
(7) it repeats the above steps, carries out the construction of lower pile.
Material used in the present embodiment can be bought, no special requirement is wanted in addition to having special define in market
The material asked can select any specification model.
Claims (1)
1. a kind of powder seif-citing rate stake, it is characterised in that be expressed as in mass ratio at the composition of pile material, original soil: mountain skin soil: water
Mud: seif-citing rate powder agent=(0.35~0.4): (0.5~0.6): (0.04~0.07): (0.01~0.015, wherein mountain skin
Grogs diameter is less than 25mm；The composition of seif-citing rate powder agent is expressed as in mass ratio, light-burned MgO: mushroom is carefully over-fired CaO: blast furnace iron powder:
Flyash: expansive agent for cement slurry=(0.25~0.35): (0.14~0.16): (0.25~0.35): (0.15~0.25): (0.04~
0.06)；Pile powder body material is obtained after mixing at pile material, is used for pile；
The pile making method of described powder seif-citing rate stake be it is such, pile drill when use augers, drilling diameter 0.35
Pile powder body material is poured into stake holes, rams, hit reality by~0.40m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934806.6A CN108978639A (en) | 2018-08-16 | 2018-08-16 | A kind of powder seif-citing rate stake and its pile making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934806.6A CN108978639A (en) | 2018-08-16 | 2018-08-16 | A kind of powder seif-citing rate stake and its pile making method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108978639A true CN108978639A (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810934806.6A Pending CN108978639A (en) | 2018-08-16 | 2018-08-16 | A kind of powder seif-citing rate stake and its pile making method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411467A (en) * | 2022-03-31 | 2022-04-29 | 山西机械化建设集团有限公司 | Construction method of high-liquid limit soil filler high-fill skeleton stress and drainage system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162577A (en) * | 1997-04-04 | 1997-10-22 | 袁奕 | Fly ash pile and application process |
| CN103061224A (en) * | 2013-01-25 | 2013-04-24 | 谢时雳 | Method for thawing and strengthening permafrost foundations by quicklime-sand piles |
| CN106638575A (en) * | 2017-01-10 | 2017-05-10 | 邓亚光 | Reinforcing method of pile body |
| CN106906709A (en) * | 2017-03-27 | 2017-06-30 | 石家庄铁道大学 | A kind of construction method of the modified cement earth pile of quick lime |
-
2018
- 2018-08-16 CN CN201810934806.6A patent/CN108978639A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162577A (en) * | 1997-04-04 | 1997-10-22 | 袁奕 | Fly ash pile and application process |
| CN103061224A (en) * | 2013-01-25 | 2013-04-24 | 谢时雳 | Method for thawing and strengthening permafrost foundations by quicklime-sand piles |
| CN106638575A (en) * | 2017-01-10 | 2017-05-10 | 邓亚光 | Reinforcing method of pile body |
| CN106906709A (en) * | 2017-03-27 | 2017-06-30 | 石家庄铁道大学 | A kind of construction method of the modified cement earth pile of quick lime |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114411467A (en) * | 2022-03-31 | 2022-04-29 | 山西机械化建设集团有限公司 | Construction method of high-liquid limit soil filler high-fill skeleton stress and drainage system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20181211 |