CN107663863A - A kind of Permafrost Area pile foundation and its construction technology - Google Patents
A kind of Permafrost Area pile foundation and its construction technology Download PDFInfo
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- CN107663863A CN107663863A CN201610607252.XA CN201610607252A CN107663863A CN 107663863 A CN107663863 A CN 107663863A CN 201610607252 A CN201610607252 A CN 201610607252A CN 107663863 A CN107663863 A CN 107663863A
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- precast concrete
- permafrost area
- refrigeration cycle
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/35—Foundations formed in frozen ground, e.g. in permafrost soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/14—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against frost heaves in soil
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a kind of Permafrost Area pile foundation, the basis includes being located at the cast-in-place concrete outside the precast concrete pile and the precast concrete pile at the foundation ditch center of mechanically or manually pore-forming.Pre-buried kind of refrigeration cycle pipe in the precast concrete pile, hot pin sleeve is preset on the kind of refrigeration cycle pipe；The foundation ditch top season activity interval sets fiberglass shroud；The peripheral ground of the foundation ditch buries insulation material.The invention also discloses the construction technology of the Permafrost Area pile foundation.Cost of the present invention is low, the engineering time is short, suitable for Permafrost Area work transmission line, science of bridge building, aerial pipeline engineering and house construction engineering.
Description
Technical field
The present invention relates to Permafrost Area technical field of construction, more particularly to a kind of Permafrost Area pile foundation and its construction
Technique.
Background technology
In order to support Tibet and Qinghai socio-economic development, country puts into a large amount of manpower and financial resources and builds multinomial great work
Journey, such as the Jing Zang high speeds of Qinghai-Tibet Highway, Qinghai-Tibet Railway, ± 400kV DC networking projects, and " 13 " strategical planning construction
Highway Qinghai section and Tibet section.The a great problem that engineering on Qinghai-Tibet Platean faces is exactly Frozen soil problems.For engineering, freeze
Penus easily occurs frost heave and thaw collapse phenomenon, if treatment measures are improper, can cause one to engineering works in unfavorable foundation soil
Fixed destruction.
Pile foundation is goed deep into inside frozen soil layer, obtains higher bearing capacity and long-term thermal stability, therefore in permafrost region
It is widely used.But due to the direct effect of pile foundation and deep frozen soil so that the thermal agitation to frozen soil is more violent.
Thermal agitation of the pile foundation to frozen soil is essentially from two aspects：First is the thermal agitation in Excavation Process, and second is coagulation
The heat of hydration of soil.The first is inevitable in work progress.So it is to reduce frozen soil thermal agitation effectively to reduce the heat of hydration
Importance.Ning Zuojun（A kind of Permafrost Area reduces the method for cast-in-situ bored pile hydration heat of concrete, CN105113489A）
The method for proposing that hot pin is inserted and fixed into the sleeve pipe in basis in construction to reduce the heat of hydration, shorten time returning to freeze.The skill
Art has certain novelty, but both sides deficiency be present：First, hot pin only in the winter time under the conditions of can just play cooling effect
Fruit, warm season construction is not suitable for it；Second, hot pin heat convection efficiency is slow, within the shorter engineering time, it is difficult to obtains effective
Cooling-down effect.
Frozen soil foundation is most sensitive to temperature change, and mechanical property is significantly deteriorated after frozen soil melts so that upper part work loses
Surely, so it is the operation of engineering long-term safety, stable key point to keep pile peripheral earth to be in frozen state.Hot pin is to maintain jelly
Soil is in a kind of effective measures of frozen state.Yu Qihao（Strengthen the structure of transmission line of electricity column foot frozen soil stability of foundation,
CN202519710U）Gravity type hot pin is buried around column foot to keep transmission line of electricity column foot heat endurance；Liu Jifu（Using
Heat pipe foundation pile in permafrost area, CN2589513）Absorber plate and hot pin are fixed on by pile foundation using ring steel reinforced bar
Surface reaches the purpose to basis cooling.Above-mentioned two patent has certain novelty, but there is also both sides deficiency：The
One, hot pin is buried around column foot, due to having a certain distance away from basis, hot pin is limited and slow to the cooling-down effect on basis；The
Two, hot pin is fixed on to the side on basis, then simply the cooling-down effect of side is obvious, and cooling-down effect both sides are uneven.
In order to avoid the disturbance in work progress to frozen soil, foundation construction selects to carry out in cold season, but due to Qinghai-Tibet height
The former exceedingly odious natural environment of cold season so that cold season construction quality and difficulty of construction greatly increase.It is therefore proposed that can be warm
The novel foundation and construction technology of season construction, and the actual important content innovated of engineering.
In summary, in order to meet the needs of Permafrost Area engineering construction, how basic heat endurance is being ensured
While, propose a kind of in hot weather construction, do mechanization operation, the novel foundation form for greatly shortening the engineering time and its to apply
Work technique, it is to a problem in the urgent need to address in state-of-the-art technology and design, is set for the pile foundation of Permafrost Area
Meter has certain theory significance and construction value.
The content of the invention
The technical problems to be solved by the invention are to provide the Permafrost Area pile foundation that a kind of cost is low, the engineering time is short
Plinth.
Another technical problem to be solved by this invention is to provide the construction technology of the Permafrost Area pile foundation.
A kind of to solve the above problems, Permafrost Area pile foundation of the present invention, it is characterised in that：The basis includes
The cast-in-place concrete being located at outside the precast concrete pile and the precast concrete pile at the foundation ditch center of mechanically or manually pore-forming；
Pre-buried kind of refrigeration cycle pipe in the precast concrete pile, hot pin sleeve is preset on the kind of refrigeration cycle pipe；Foundation ditch top season
Movable interval sets fiberglass shroud；The peripheral ground of the foundation ditch buries insulation material.
A diameter of 500 ~ 1500mm of the foundation ditch, depth are 6 ~ 15m, and the reaming angle of spread in bottom is 15 ° ~ 25 °.
The precast concrete pile refers to external diameter or the length of side is 300 ~ 900mm, the long 6 ~ 15m of stake prefabricated reinforced concrete
Native round or square solid pile, its bottom is in tip-angled shape, and pile body surface is provided with pre-groove.
The kind of refrigeration cycle pipe or hot pin sleeve refer to the steel hollow pipeline that internal diameter is 70 ~ 110mm, thickness is 3 ~ 6mm.
1 ~ 2 gravity type hot pin of installation in the hot pin sleeve.
The fiberglass shroud refers to that thickness is 3 ~ 10mm, is highly shroud made of 0.5 ~ 3m fiberglass.
The insulation material is the one or more combination in XPS, polyurethane sheet, injection XPS, its
A diameter of 2 ~ 5m, thickness are 5 ~ 20mm.
A kind of construction technology of Permafrost Area pile foundation as described above, comprises the following steps：
(1) precast concrete pile is made according to design requirement, and curing time is determined by subsequent construction schedule requirement；
(2) according to design stake footpath and depth requirements, using mechanically or manually mode excavation pit；
(3) after the completion of the excavation of foundation pit, cast-in-place concrete is poured into a mould, and pile sinking is carried out to the precast concrete pile and enters hole；
(4) the precast concrete pile of the cast-in-place concrete and its inside is carried out to conserve within 28 days；
(5) after the completion of conserving, refrigerating plant is connect to the kind of refrigeration cycle pipe in the precast concrete pile, after 3 ~ 7 days, basis
With frozen soil quick freezing around it, freezing strength is produced；
(6) fiberglass shroud is set in the foundation ditch top season activity interval, and insulation is buried in the peripheral ground of the foundation ditch
Material；
(7) gravity type hot pin is installed in the hot pin sleeve on the kind of refrigeration cycle pipe, then pours into a mould the cast-in-place concrete and carries out
Vibrate.
The present invention has advantages below compared with prior art：
1st, cooling efficiency is significantly improved.
First, the present invention uses precast concrete pile, reduces the dosage of cast-in-place concrete, so as to reduce the heat of hydration
Produce；Second, the kind of refrigeration cycle pipe in prefabricated pile is freezed by refrigeration machine, can quickly reduce pile peripheral earth temperature；The
Three, it is of the invention by gravity type hot pin portion disposed within so that hot pin can carry out temperature with high efficiency to pile peripheral earth, ensure soil around pile
Body is chronically at frozen state.
2nd, radical change pile foundation stability.
First, during frozen soils temperature effectively reduces, stake side freezing force, stake end normal stress can carry the present invention at double
It is high；Second, bottom of the present invention is designed using base expanding and base expanding, can effectively improve foundation bearing capacity and withdrawal resistance；3rd, the present invention is in season
Mobile layer uses fiberglass shroud, can be by seasonally thaw layer because fiberglass shroud and frozen soil have less freezing strength
Freeze, lifting by frost power reduction 30 ~ 50% caused by process of frost heave, effectively avoid destructive process of the frost-heave force to pile foundation；Above three is arranged
The use applied, substantially increases the safety coefficient of pile foundation, and pile foundation stability obtains radical change.
3rd, pile foundation quality is improved.
Precast concrete pile can ensure the quality of basal core force part in the present invention.Meanwhile pass through cast-in-place concrete
Insertion, the squeezing action of cast and prefabricated pile twice, can fully closely knit pouring concrete, reach between stake-frozen soil
It is closely knit, be in close contact, ensure stake-Contact Frozen Soil face freezing force formation and performance.
4th, significantly the engineering construction cycle is shortened.
First, the present invention is connected Posterior circle by installing kind of refrigeration cycle pipe in prefabricated pile side by circulation pipe with refrigerator
Refrigeration, the thermal agitation to frozen soil such as engineering construction, hydration heat of concrete was eliminated within 3 ~ 5 day short time time, can quickly be taken
Freezing strength is obtained, stand-by period freezing period can be greatly decreased；Second, the present invention can be by reasonable arrangement excavation of foundation pit, pre-
Stake processed enters hole, the time of concreting, can obtain rapid construction, the achievement of streamlined operation；Above-mentioned two step is adopted
With can significantly shorten the construction cycle.
5th, execution conditions are improved.
The present invention is acted on the quick of pile peripheral earth, effective temperature-reducing by the kind of refrigeration cycle pipe in precast concrete pile side,
Disturbance of the construction to frozen soil is substantially reduced.So the pile foundation can select to construct in warm season, cold season is avoided to construct
Many unfavorable factors.
6th, engineering building materials, time cost are reduced.
First, on the premise of related specifications requirement is met, the present invention can shorten existing pile foundation buried depth 30 ~ 50%；The
Two, the present invention uses precast concrete pile to reduce building materials about 30 ~ 40%；3rd, the precast concrete pile that the present invention designs
Have the advantages that intensity it is high, not cracky, it is easy to loading and unloading, be easy to transport, reduce installation and cost of transportation；3rd, the present invention
The construction cycle can significantly be shortened, greatly reduce the time cost of engineering.In a word, although kind of refrigeration cycle pipe, hot pin with
And fiberglass shroud adds certain cost, but compared with the engineering effort with that can reach, integrated engineering cost performance is still
It is greatly improved.
7th, there is environment-friendly advantage.
Pile foundation of the present invention has the advantages that excavation area is small, and short construction period, heat endurance is good, and later stage disease is few,
The positive role of environmental protection is served under Qinghai-Tibet fragile natural environmental condition indirectly.
8th, the present invention is applied to Permafrost Area work transmission line, science of bridge building, aerial pipeline engineering and Fang Jiangong
Journey.
Brief description of the drawings
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present invention.
In figure：1- precast concrete piles；2- cast-in-place concretes；3- kind of refrigeration cycle pipes；4- fiberglass shrouds；5- foundation ditches；6—
Insulation material.
Embodiment
As shown in figure 1, a kind of Permafrost Area pile foundation, the basis includes being located in the foundation ditch 5 of mechanically or manually pore-forming
Cast-in-place concrete 2 outside the precast concrete pile 1 and precast concrete pile 1 of the heart.Pre-buried kind of refrigeration cycle in precast concrete pile 1
Pipe 3, hot pin sleeve is preset on the kind of refrigeration cycle pipe 3；The top season activity interval of foundation ditch 5 sets fiberglass shroud 4；Foundation ditch 5
Peripheral ground buries insulation material 6.
Wherein：
A diameter of 500 ~ 1500mm of foundation ditch 5, depth are 6 ~ 15m, and the reaming angle of spread in bottom is 15 ° ~ 25 °.
Precast concrete pile 1 refers to external diameter or the length of side is 300 ~ 900mm, the long 6 ~ 15m of stake prefabricated armored concrete
Round or square solid pile, its bottom are in tip-angled shape, and pile body surface is provided with pre-groove.
Kind of refrigeration cycle pipe 3 or hot pin sleeve refer to the steel hollow pipeline that internal diameter is 70 ~ 110mm, thickness is 3 ~ 6mm.Heat
1 ~ 2 gravity type hot pin of installation in rod sleeve.
Fiberglass shroud 4 refers to that thickness is 3 ~ 10mm, is highly shroud made of 0.5 ~ 3m fiberglass.
Insulation material 6 is the one or more combination in XPS, polyurethane sheet, injection XPS, and its is straight
Footpath is 2 ~ 5m, and thickness is 5 ~ 20mm.
The construction technology of the Permafrost Area pile foundation, comprises the following steps：
(1) precast concrete pile 1 is made according to design requirement, and curing time is determined by subsequent construction schedule requirement.
(2) according to design stake footpath and depth requirements, using mechanically or manually mode excavation pit 5.The condition of mechanical equivalent of light excavation is
It is 4 ~ 8m/h to refer to rate of penetration of the rotary drilling rig in frozen soil.
(3) after the completion of foundation ditch 5 excavates, cast-in-place concrete 2 is poured into a mould, and pile sinking is carried out to precast concrete pile 1 and enters hole.
(4) the precast concrete pile 1 of cast-in-place concrete 2 and its inside is carried out to conserve within 28 days.
(5) after the completion of conserving, refrigerating plant is connect to the kind of refrigeration cycle pipe 3 in precast concrete pile 1, after 3 ~ 7 days, base
Plinth and frozen soil quick freezing around it, produce freezing strength.
(6) fiberglass shroud 4 is set in the top season activity interval of foundation ditch 5, and insulation is buried in the peripheral ground of foundation ditch 5
Material 6.
(7) gravity type hot pin is installed in the hot pin sleeve on kind of refrigeration cycle pipe 3, then pours into a mould cast-in-place concrete 2 and is shaken
Smash, foundation soil is remained frozen state in being run in the later stage, so as to reach the long-time stability on basis.
Technical solution of the present invention is now illustrated by taking transmission line foundation as an example.
1st, corner steel tower design basic parameter：
（x：Perpendicular to line direction； y：Along line direction；z：Perpendicular to ground upwardly）
2nd, precast concrete pile 4 is made：Using strength grade, concrete strength is not less than for 42.5 Portland cement
C40, freeze proof grade are not less than F100；5 ~ 40mm of aggregate size；Section is rounded, solid, a diameter of 400mm, the long 7.7m of stake；Stake
Bottom is in tip-angled shape, in favor of pile sinking；Pile body surface is prefabricated with groove, the adhesion strength between enhancing and concrete；It is pre- in pile body
It is embedded with kind of refrigeration cycle pipe 3, the pre-buried 4 foundation foot bolt of top surface；Arrangement of reinforcement presses prefabricated pile arrangement of reinforcement specification arrangement of reinforcement；January opens before excavation of foundation pit
Begin prefabricated at the scene；
3rd, foundation ditch 5 excavates：Stake footpath 800mm, buried depth 7.7m, this stage can use rotary drilling rig；Brill of the rotary drilling rig in frozen soil
Enter speed and excavate about 1 day used time in 4m/h, a base iron tower foundation；
4th, concrete is poured into a mould, after the completion of foundation ditch 5 excavates, precast concrete pile 4 is stood on into the center of foundation ditch 5, with the early strong coagulation of subzero temperature
Soil perfusion, 5 ~ 7 DEG C of molding temperature, layering is vibrated, and strength grade of concrete is not less than C30；
5th, below ground 2m installs fiberglass shroud 3, thickness 5mm；
6th, conserve, concrete and its precast concrete pile 4 of inside conserve within 28 days；
7th, after the completion of conserving, refrigerating plant is connect to kind of refrigeration cycle pipe 3 in precast concrete pile 4, keeps the temperature of kind of refrigeration cycle pipe 3
At -10 DEG C, after 3 ~ 4 days, basis can produce freezing strength with frozen soil quick freezing around it；
8th, a group tower, Li Ta are carried out；
9th, the upper end of the kind of refrigeration cycle pipe 3 installation hot pin in precast concrete pile 4, makes foundation soil in the transmission line of electricity later stage is run
Frozen state is remained, so as to reach the long-time stability of column foot.
It should be understood that embodiment discussed here and embodiment simply to illustrate that, person skilled in the art can be proposed
Various modifications and variations, such modifications and variations are included within spirit herein spirit and scope and appended claim
In the range of.
Claims (8)
- A kind of 1. Permafrost Area pile foundation, it is characterised in that：The basis includes being located at the foundation ditch of mechanically or manually pore-forming（5）In The precast concrete pile of the heart（1）And the precast concrete pile（1）Outside cast-in-place concrete（2）；The precast concrete pile （1）Interior pre-buried kind of refrigeration cycle pipe（3）, the kind of refrigeration cycle pipe（3）Upper default hot pin sleeve；The foundation ditch（5）Top season activity Interval sets fiberglass shroud（4）；The foundation ditch（5）Peripheral ground bury insulation material（6）.
- A kind of 2. Permafrost Area pile foundation as claimed in claim 1, it is characterised in that：The foundation ditch（5）A diameter of 500 ~ 1500mm, depth are 6 ~ 15m, and the reaming angle of spread in bottom is 15 ° ~ 25 °.
- A kind of 3. Permafrost Area pile foundation as claimed in claim 1, it is characterised in that：The precast concrete pile（1）It is Finger external diameter or the length of side are 300 ~ 900mm, the long 6 ~ 15m of stake prefabricated armored concrete is round or square solid pile, its bottom In tip-angled shape, pile body surface is provided with pre-groove.
- A kind of 4. Permafrost Area pile foundation as claimed in claim 1, it is characterised in that：The kind of refrigeration cycle pipe（3）Or heat Rod sleeve refers to the steel hollow pipeline that internal diameter is 70 ~ 110mm, thickness is 3 ~ 6mm.
- A kind of 5. Permafrost Area pile foundation as claimed in claim 1, it is characterised in that：Installation 1 ~ 2 in the hot pin sleeve Root gravity type hot pin.
- A kind of 6. Permafrost Area pile foundation as claimed in claim 1, it is characterised in that：The fiberglass shroud（4）Refer to Thickness is 3 ~ 10mm, is highly shroud made of 0.5 ~ 3m fiberglass.
- A kind of 7. Permafrost Area pile foundation as claimed in claim 1, it is characterised in that：The insulation material（6）For polyphenyl One or more combination in vinyl plate, polyurethane sheet, injection XPS, its a diameter of 2 ~ 5m, thickness is 5 ~ 20mm.
- 8. a kind of construction technology of Permafrost Area pile foundation as claimed in claim 1, comprises the following steps：(1) precast concrete pile is made according to design requirement（1）, and determine curing time by subsequent construction schedule requirement；(2) according to design stake footpath and depth requirements, using mechanically or manually mode excavation pit（5）；(3) the foundation ditch（5）After the completion of excavation, cast-in-place concrete is poured into a mould（2）, and to the precast concrete pile（1）Carry out pile sinking Enter hole；(4) to the cast-in-place concrete（2）And its internal precast concrete pile（1）Conserve within 28 days；(5) after the completion of conserving, to the precast concrete pile（1）Interior kind of refrigeration cycle pipe（3）Refrigerating plant is connect, by 3 ~ 7 days Afterwards, basis and frozen soil quick freezing around it, freezing strength is produced；(6) in the foundation ditch（5）Top season activity interval sets fiberglass shroud（4）, and in the foundation ditch（5）Peripherally Table buries insulation material（6）；(7) in the kind of refrigeration cycle pipe（3）On hot pin sleeve in installation gravity type hot pin, then pour into a mould the cast-in-place concrete（2） And vibrated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610607252.XA CN107663863B (en) | 2016-07-29 | 2016-07-29 | A kind of Permafrost Area pile foundation and its construction technology |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201610607252.XA CN107663863B (en) | 2016-07-29 | 2016-07-29 | A kind of Permafrost Area pile foundation and its construction technology |
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| CN107663863B CN107663863B (en) | 2019-09-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610522A (en) * | 2018-12-11 | 2019-04-12 | 长春工程学院 | The light platform structure of frost damage prevention |
| CN110714474A (en) * | 2019-10-24 | 2020-01-21 | 广西大学 | Pile foundation structure and method for quick refreezing and automatic refrigerating by using same |
| CN111046469A (en) * | 2019-12-13 | 2020-04-21 | 江西理工大学南昌校区 | Thickness calculation method of single-pile foundation concrete protective layer in frozen soil area and protective layer |
| CN111062076A (en) * | 2019-12-13 | 2020-04-24 | 江西理工大学南昌校区 | Thickness calculation method for frozen soil area group pile foundation concrete protective layer and protective layer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5955917A (en) * | 1982-09-22 | 1984-03-31 | Daito Juki Koji Kk | Reaction anchor pile |
| CN202865830U (en) * | 2012-06-12 | 2013-04-10 | 上海莘阳建筑节能科技开发有限公司 | Filling pile for ground source heat pump |
| CN203846519U (en) * | 2014-05-16 | 2014-09-24 | 葛洲坝集团电力有限责任公司 | Glass fiber reinforced plastic cast-in-place pile foundation |
| CN104895059A (en) * | 2015-03-31 | 2015-09-09 | 中铁时代建筑设计院有限公司 | Freezing cement mixing pile and construction method thereof |
| CN205134353U (en) * | 2015-11-17 | 2016-04-06 | 西安建筑科技大学 | Prevent frostbite and pull out and melt a heavy assembly type ventilation stake foundation structure |
| CN105672307A (en) * | 2016-01-12 | 2016-06-15 | 四川华西管桩工程有限公司 | Expanded-base combination end pile bearing foundation |
| CN205934951U (en) * | 2016-07-29 | 2017-02-08 | 中国科学院寒区旱区环境与工程研究所 | Permafrost region pile foundation |
-
2016
- 2016-07-29 CN CN201610607252.XA patent/CN107663863B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5955917A (en) * | 1982-09-22 | 1984-03-31 | Daito Juki Koji Kk | Reaction anchor pile |
| CN202865830U (en) * | 2012-06-12 | 2013-04-10 | 上海莘阳建筑节能科技开发有限公司 | Filling pile for ground source heat pump |
| CN203846519U (en) * | 2014-05-16 | 2014-09-24 | 葛洲坝集团电力有限责任公司 | Glass fiber reinforced plastic cast-in-place pile foundation |
| CN104895059A (en) * | 2015-03-31 | 2015-09-09 | 中铁时代建筑设计院有限公司 | Freezing cement mixing pile and construction method thereof |
| CN205134353U (en) * | 2015-11-17 | 2016-04-06 | 西安建筑科技大学 | Prevent frostbite and pull out and melt a heavy assembly type ventilation stake foundation structure |
| CN105672307A (en) * | 2016-01-12 | 2016-06-15 | 四川华西管桩工程有限公司 | Expanded-base combination end pile bearing foundation |
| CN205934951U (en) * | 2016-07-29 | 2017-02-08 | 中国科学院寒区旱区环境与工程研究所 | Permafrost region pile foundation |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610522A (en) * | 2018-12-11 | 2019-04-12 | 长春工程学院 | The light platform structure of frost damage prevention |
| CN110714474A (en) * | 2019-10-24 | 2020-01-21 | 广西大学 | Pile foundation structure and method for quick refreezing and automatic refrigerating by using same |
| CN111046469A (en) * | 2019-12-13 | 2020-04-21 | 江西理工大学南昌校区 | Thickness calculation method of single-pile foundation concrete protective layer in frozen soil area and protective layer |
| CN111062076A (en) * | 2019-12-13 | 2020-04-24 | 江西理工大学南昌校区 | Thickness calculation method for frozen soil area group pile foundation concrete protective layer and protective layer |
| CN111046469B (en) * | 2019-12-13 | 2022-08-16 | 江西理工大学南昌校区 | Thickness calculation method of single-pile foundation concrete protection layer in frozen soil area and product |
| CN111062076B (en) * | 2019-12-13 | 2022-08-30 | 江西理工大学南昌校区 | Thickness calculation method of frozen soil area group pile foundation concrete protective layer and product |
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| Publication number | Publication date |
|---|---|
| CN107663863B (en) | 2019-09-20 |
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Effective date of registration: 20200804 Address after: 730000 No.318, Donggang West Road, Chengguan District, Lanzhou City, Gansu Province Patentee after: NORTHWEST INSTITUTE OF ECO-ENVIRONMENT AND RESOURCES, CAS Address before: Chengguan District of Gansu city of Lanzhou province Donggang West Road 730000 No. 320 Patentee before: Institute of environment and Engineering in cold and dry areas, Chinese Academy of Sciences |