CN107905212B - A kind of construction method of water filling element earth pile composite foundation in situ - Google Patents
A kind of construction method of water filling element earth pile composite foundation in situ Download PDFInfo
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- CN107905212B CN107905212B CN201710888780.1A CN201710888780A CN107905212B CN 107905212 B CN107905212 B CN 107905212B CN 201710888780 A CN201710888780 A CN 201710888780A CN 107905212 B CN107905212 B CN 107905212B
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- pile
- water injection
- injection pipe
- pouch
- immersed tube
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
- E02D3/123—Consolidating by placing solidifying or pore-filling substances in the soil and compacting the soil
Abstract
The present invention relates to a kind of construction method of water filling element earth pile composite foundation in situ, mainly includes the steps that smooth site clearing, surveying setting-out, construction equipment assembling in place, pilot hole, water filling humidification, tube drawing secondary punching, bottom are rammed and fall soil, filler humidification after rise, layering filler in hole, compacted compacting pore-forming, loosening layer at the top of removing, spread out and put on compacting.Using construction method of the present invention, can form compound foundation, have and save construction machinery, reduce construction cost, improve working efficiency, reduce noise and mud pollution, the advantages of consumption dregs keeps environment.
Description
Technical field
The present invention relates to a kind of field of foundation treatment of Canal in Loess Area, in particular to a kind of water filling element earth pile in situ is multiple
Close the construction method of ground, the deep soft soil treatment suitable for engineerings such as highway, dykes and dams, building constructions.
Background technique
China has a vast territory, complex geologic conditions and various regions difference is larger, and loess foundation classification is more, distribution is wide；Especially
There is deep loess foundation in northwest Gansu.With the further development of China's economy, northwest loess area is required necessarily to mention
It rises, but also northwest loess engineering quantity and scale constantly expand.Seek that technologically advanced, economical rationality, easy for construction, quality is steady
The ultra-deep Loess Subgrade mode fixed, bearing capacity is high, material saves, the feature of environmental protection is strong becomes that geotechnical engineering circle is urgently to be resolved to ask
Topic.
Element earth pile is the pile-type that Canal in Loess Area is commonly used, and element earth pile is to utilize immersed tube, impact or explosive expansion etc.
Then method soil compaction pore-forming in ground rams into hole and fills out plain native pile.When pile, made by the transverse shear stress in pore forming process
With the soil in stake holes keeps inter-pile soil compacted around being pressed against, element native (cohesive soil) layering filling stake holes that then will be got ready
It is interior, and tamping is layered to designed elevation.With the pile body of plain native compaction in layers, referred to as native compaction pile, the latter respectively with compacted stake
Between local soil type at composite foundation, the common upper load for bearing basis.General driving depth control is between 10-12 meters, for ultra-deep
Base processing does not use such pile-type.But with Loess Area of Northwest China economic development, general above 15 meters of structure foundation processing
More than, according to current actual conditions and technical conditions, needs to invent a kind of water filling element earth pile composite foundation in situ and apply
Work method, between duration, construction investment, construction quality can reasonable balance, the characteristics of abundant element earth pile.
Summary of the invention
It is an object of the invention to give full play to water filling element earth pile in situ, inadequate for foundation bearing capacity
Problem is using specific water filling element earth pile composite foundation construction method in situ, to overcome the problems, such as that processing depth is limited.
In order to achieve the above purpose, the invention adopts the following technical scheme:
A kind of construction method of water filling element earth pile composite foundation in situ, it is characterised in that including following construction procedure:
(1) site clearing is smooth: according to design requirement site clearing；
(2) surveying setting-out: stake position is measured, and lays hidden pipe pile machine in designated position；
(3) construction equipment assembling is in place: assembling hidden pipe pile machine and its bracket, and assembling, which is rammed, expands equipment, completes pile foundation verticality
Start to carry out pilot hole water filling pipe pile settling construction after control, water injection equipment debugging；
(4) pilot hole: start with hidden pipe pile machine after completing pile foundation degree control, water injection equipment debugging in low-water-content loess
(1) hammering pilot hole is carried out on, the hidden pipe pile owner will include immersed tube (10), pouch (19), vertical water injection pipe (23), water injection pipe
A(22), annular water injection pipe (24), pile top (15) and rear expanding unit；Pile top (15) is connected to the bottom of immersed tube (10), vertical to infuse
Water pipe (23) is connected to annular water injection pipe (24), and annular water injection pipe (24) Gong She tri- is located at the upper of immersed tube (10) outer wall
Portion, middle part and lower part, vertical water injection pipe (23) and water injection pipe A(22) it is fixed on immersed tube (10) inner wall；On the top of immersed tube (10)
Pouch (19) are equipped with lower part, water injection pipe A(22) it is connected to pouch (19)；Expanding unit is set under bottom pouch (19) afterwards
On immersed tube (10) outer wall；The expanding unit afterwards is by fixed plate (11), rear expansion board (12), spring (13), limit plate (14), company
Lug (18), connection steel wire (21) composition, fixed plate (11) one end and immersed tube (10) are fixed, the hinged expansion board of the other end (12),
Hinged place is equipped with the limit plate (14) for expansion board (12) rotational angle after limiting, and engaging lug (18) is set to rear expansion board
(12) the other end, connection steel wire (21) one end are connected on pouch (19), and the other end is connected on engaging lug (18)；Spring
(13) one end is fixed on immersed tube (10), expansion board (12) after other end connection；
(5) water filling humidification: section is divided according to pile body range soil layer moisture content during pilot hole and is contained according to Soil Parameters
Water rate test coefficient, infiltration coefficient, single hole humidification range carry out quantitative timing water filling, by vertical water injection pipe (23), ring-shaped pouring
Water pipe (24) water filling, while being filled the water from water injection pipe A(22) to pouch (19), expand pouch (19), with the compacted area of surrounding humidification
(4) compacted formation water-stop sheet, pouch (19) expansion pull connection steel wire (21) and rear expansion board (12) outward, form monoblock type branch
Support；
(6) tube drawing secondary punching: after downward pilot hole to designated position, start on pull out immersed tube (10), after be pulled out after the completion of pilot hole
Pipe to half hole depth, hole wall falls soil after rise because impact is formed, and is humidified and is fallen after rise using vertical water injection pipe (23), annular water injection pipe (24)
Soil, secondary punching squeeze compacting and fall soil after rise；
(7) falling soil is rammed at bottom: ramming expansion equipment and carries out Ramming operation, expands plate with the fixation pile top (26) on hammer ram (25), rammer
(27) compacting falls soil after rise, is formed and falls native rammed bulb pile end (5) after rise；
(8) filler is humidified: being humidified by optimum moisture content shelving；
(9) it is layered filler in hole: single depth of packing being divided according to hammer ram parameter, ramming times, filler parameter and is divided
Layer filler；
(10) compacted compacting pore-forming: combine compacted pore-forming using equilateral triangle arrangement, pore-forming using " interlacing, every row, jump
Beat " method, compaction in layers pile survives for four times, while at the compacted formation element earth pile (6) of hole edge filling tamped；
(11) remove top and loosen layer: after pilot hole, ramming, surface soil layer loosens, and removes table according to condition of construction
Face loosens layer, changes to fill out and rolls loading plate (7)；
(12) spread out and put on compacting: surface loosens layer and with backfill carries out place Min layers and fill out to be densified to designed elevation.
Further, the pile top, which is equipped with to ram, expands plate (16), movable plate (17).
Expanding unit is by fixed plate (11), rear expansion board (12), spring (13), limit plate (14), engaging lug after described
(18), connection steel wire (21) composition, connection steel wire (21) one end are connected on pouch (19), and one end is connected to engaging lug (18)
On.
In above-mentioned construction method, it is compacted that long spire rotary drill machine, rotation control drilling machine, hammer hidden pipe also can be used in addition to hidden pipe pile machine
Stake machine.According to pile body range soil layer moisture content sectional during pilot hole, according to Soil Parameters, moisture content test coefficient is seeped
Saturating coefficient, single hole humidification range, carry out quantitative timing water filling by Con trolling index of most excellent moisture content, if using has pressure injection water
And stand resolution time.Water proof is used as by vertical water injection pipe (23), annular water injection pipe (24) and pouch (19) if desired
Plate water proof.Immersed tube tube drawing process mesoporous top uniformly fills the water humidification.
Using water filling element earth pile composite foundation construction method in situ of the invention, can form compound foundation, there is section
Construction machinery is saved, construction cost is reduced, improves working efficiency, reduces noise and mud pollution, consumption dregs keeps the excellent of environment
Point.
Detailed description of the invention
Fig. 1 is water filling element earth pile composite foundation diagrammatic cross-section in situ；
Fig. 2 is hidden pipe pile machine schematic diagram；
Fig. 3 is pile layout plan view；
Fig. 4 is hidden pipe pile machine sectional view；
Fig. 5 is to ram to expand construction schematic diagram；
Fig. 6 is fixed pile top front view；
Fig. 7 is fixed pile top top view；
Fig. 8 is hidden pipe pile machine tube drawing schematic diagram；
Fig. 9 is construction flow chart of the present invention.
1- low-water-content loess, the hard soil layer of 2-, 3- miscellaneous fill, the compacted area of 4- humidification, 5- fall native rammed bulb pile end, 6- element after rise
Native compaction pile, 7- roll loading plate, 8- Soft Soil Layer, 9- with respect to hard stratum, 10-immersed tube, 11-fixed plates, 12-rear expansion board,
13-springs, 14-limit plates, 15-pile tops, 16-expansion board, 17-movable plates, 18-engaging lugs, 19-pouches, 20-notes
Water hole, 21-connection steel wires, 22-water injection pipe A, 23-vertical water injection pipes, 24-annular water injection pipes, 25- hammer ram, 26- spud pile
Point, 27-, which are rammed, expands plate.
Specific embodiment
Element earth pile design parameter and construction technical requirement, pouch design parameter and construction technical requirement connect steel wire
Manufacture craft etc., be not repeated in present embodiment, emphasis illustrates that the present invention relates to the embodiments of structure.
Fig. 1 is water filling element earth pile composite foundation diagrammatic cross-section in situ of the invention.Referring to shown in Fig. 8 in situ
The hidden pipe pile machine of element earth pile construction is filled the water, mainly includes immersed tube 10, pouch 19, vertical water injection pipe 23, water injection pipe A22, ring
Shape water injection pipe 24, pile top 15 and rear expanding unit；Pile top 15 is connected to the bottom of immersed tube 10, and pile top, which is equipped with to ram, expands plate 16.Ring
24 Gong She tri- of shape water injection pipe is located at the upper, middle and lower of 10 outer wall of immersed tube, vertical water injection pipe 23 and water injection pipe
A22 is fixed on 10 inner wall of immersed tube；The upper and lower part of immersed tube 10 be equipped with pouch 19, rear expanding unit be set to bottom pouch 19 it
Under 10 outer wall of immersed tube on.Expanding unit is by fixed plate 11, rear expansion board 12, spring 13, limit plate 14, engaging lug 18, company afterwards
The composition of steel wire 21 is connect, connection 21 one end of steel wire is connected in pouch 19, and one end is connected on engaging lug 18.
Element earth pile composite foundation is filled the water shown in Fig. 1 in situ to include element earth pile 6 and roll loading plate 7, element is native
6 bottom of compaction pile is to fall native rammed bulb pile end 5 after rise, and the compacted area 4 of humidification is formed with around element earth pile 6.Low-water-content loess 1
Miscellaneous fill 3, Soft Soil Layer 8, opposite hard stratum 9 and hard soil layer 2 are followed successively by under upper.
The construction method of water filling element earth pile in situ, including following construction procedure are set using above-mentioned hidden pipe pile machine:
(1) site clearing is smooth: according to design requirement site clearing；
(2) surveying setting-out: stake position is measured, and lays hidden pipe pile machine in designated position；
(3) construction equipment assembling is in place: assembling hidden pipe pile machine and its bracket, and assembling, which is rammed, expands equipment, completes pile foundation verticality
Start to carry out pilot hole water filling pipe pile settling construction after control, water injection equipment debugging；
(4) pilot hole: start with hidden pipe pile machine after completing pile foundation degree control, water injection equipment debugging in low-water-content loess
Hammering pilot hole is carried out on 1, the hidden pipe pile owner will include immersed tube 10, pouch 19, vertical water injection pipe 23, water injection pipe A22, annular
Water injection pipe 24, pile top 15 and rear expanding unit；Pile top 15 is connected to the bottom of immersed tube 10, and annular 24 Gong She tri- of water injection pipe divides
Not Wei Yu 10 outer wall of immersed tube upper, middle and lower, vertical water injection pipe 23 and water injection pipe A22 are fixed on 10 inner wall of immersed tube；?
The upper and lower part of immersed tube 10 is equipped with pouch 19, and rear expanding unit is set on 10 outer wall of immersed tube under bottom pouch 19；
(5) water filling humidification: section is divided according to pile body range soil layer moisture content during pilot hole and is contained according to Soil Parameters
Water rate test coefficient, infiltration coefficient, single hole humidification range carry out quantitative timing water filling, fill the water by vertical water injection pipe 23, annular
Pipe 24 fills the water, while being filled the water from water injection pipe A22 to pouch 19, expands pouch 19, with surrounding be humidified compacted area 4 it is compacted formed every
Water plate, the expansion of pouch 19 pull connection steel wire 21 and rear expansion board 12 outward, form integral support；
(6) tube drawing secondary punching: after downward pilot hole to designated position, start on pull out immersed tube 10, the tube drawing after the completion of pilot hole
To half hole depth, hole wall falls soil after rise because impact is formed, and falls soil after rise using vertical water injection pipe 23, the annular humidification of water injection pipe 24, secondary
Punching squeezes compacting and falls soil after rise；
(7) falling soil is rammed at bottom: ramming expansion equipment and carries out Ramming operation, expands plate 27 with the fixation pile top 26 on hammer ram 25, rammer and ram
It is real to fall soil after rise, it is formed and falls native rammed bulb pile end 5 after rise；
(8) filler is humidified: being humidified by optimum moisture content shelving；
(9) it is layered filler in hole: single depth of packing being divided according to hammer ram parameter, ramming times, filler parameter and is divided
Layer filler；
(10) compacted compacting pore-forming: combine compacted pore-forming using equilateral triangle arrangement, pore-forming using " interlacing, every row, jump
Beat " method, compaction in layers pile survives for four times, while at the compacted formation element earth pile 6 of hole edge filling tamped；
(11) remove top and loosen layer: after pilot hole, ramming, surface soil layer loosens, and removes table according to condition of construction
Face loosens layer, changes to fill out and rolls loading plate 7；
Spread out and put on compacting: surface loosens layer and with backfill carries out place Min layers and fill out to be densified to designed elevation.
Claims (1)
1. a kind of construction method of water filling element earth pile composite foundation in situ, it is characterised in that including following construction procedure:
(1) site clearing is smooth: according to design requirement site clearing；
(2) surveying setting-out: stake position is measured, and lays hidden pipe pile machine in designated position；
(3) construction equipment assembles in place: assembling hidden pipe pile machine and its bracket, assembling rammer expansion equipment, completion pile foundation degree control,
Start to carry out pilot hole water filling pipe pile settling construction after water injection equipment debugging；
(4) pilot hole: start with hidden pipe pile machine after completing pile foundation degree control, water injection equipment debugging in low-water-content loess (1)
On carry out hammering pilot hole, the hidden pipe pile owner will include immersed tube (10), pouch (19), vertical water injection pipe (23), water injection pipe A
(22), annular water injection pipe (24), pile top (15) and rear expanding unit；Pile top (15) is connected to the bottom of immersed tube (10), vertical to infuse
Water pipe (23) is connected to annular water injection pipe (24), and annular water injection pipe (24) Gong She tri- is located at the upper of immersed tube (10) outer wall
Portion, middle part and lower part, vertical water injection pipe (23) and water injection pipe A(22) it is fixed on immersed tube (10) inner wall；On the top of immersed tube (10)
Pouch (19) are equipped with lower part, water injection pipe A(22) it is connected to pouch (19)；Expanding unit is set under bottom pouch (19) afterwards
On immersed tube (10) outer wall；The expanding unit afterwards is by fixed plate (11), rear expansion board (12), spring (13), limit plate (14), company
Lug (18), connection steel wire (21) composition, fixed plate (11) one end and immersed tube (10) are fixed, the hinged expansion board of the other end (12),
Hinged place is equipped with the limit plate (14) for expansion board (12) rotational angle after limiting, and engaging lug (18) is set to rear expansion board
(12) the other end, connection steel wire (21) one end are connected on pouch (19), and the other end is connected on engaging lug (18)；Spring
(13) one end is fixed on immersed tube (10), expansion board (12) after other end connection；
(5) water filling humidification: section is divided according to pile body range soil layer moisture content during pilot hole, according to Soil Parameters, moisture content
Test coefficient, infiltration coefficient, single hole humidification range carry out quantitative timing water filling, by vertical water injection pipe (23), annular water injection pipe
(24) it fills the water, while being filled the water from water injection pipe A(22) to pouch (19), expand pouch (19), squeezed with the compacted area (4) of surrounding humidification
Close formation water-stop sheet, pouch (19) expansion pull connection steel wire (21) and rear expansion board (12) outward, form integral support；
(6) tube drawing secondary punching: after downward pilot hole to designated position, start on pull out immersed tube (10), tube drawing is extremely after the completion of pilot hole
Half hole depth, hole wall fall soil after rise because impact is formed, and are humidified using vertical water injection pipe (23), annular water injection pipe (24) and fall soil after rise, and two
Secondary punching squeezes compacting and falls soil after rise；
(7) falling soil is rammed at bottom: ramming expansion equipment and carries out Ramming operation, expands plate (27) with the fixation pile top (26) on hammer ram (25), rammer
Compacting falls soil after rise, is formed and falls native rammed bulb pile end (5) after rise；
(8) filler is humidified: being humidified by optimum moisture content shelving；
(9) it is layered filler in hole: carrying out layering according to hammer ram parameter, ramming times, filler parameter division single depth of packing and fills out
Material；
(10) compacted compacting pore-forming: compacted pore-forming is combined using equilateral triangle arrangement, pore-forming using " interlacing is beaten every row, jump "
Method, compaction in layers pile survives for four times, while at the compacted formation element earth pile (6) of hole edge filling tamped；
(11) remove top and loosen layer: after pilot hole, ramming, surface soil layer loosens, and removes surface pine according to condition of construction
Dynamic layer, changes to fill out and rolls loading plate (7)；
Spread out and put on compacting: surface loosens layer and with backfill carries out place Min layers and fill out to be densified to designed elevation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710888780.1A CN107905212B (en) | 2017-09-27 | 2017-09-27 | A kind of construction method of water filling element earth pile composite foundation in situ |
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| CN201710888780.1A CN107905212B (en) | 2017-09-27 | 2017-09-27 | A kind of construction method of water filling element earth pile composite foundation in situ |
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| CN107905212A CN107905212A (en) | 2018-04-13 |
| CN107905212B true CN107905212B (en) | 2019-08-27 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109577312A (en) * | 2018-11-22 | 2019-04-05 | 福建金东矿业股份有限公司 | A kind of silt geology vibro-replacement stone compacting pile construction method |
| CN109706911B (en) * | 2018-12-11 | 2020-09-04 | 天伟建设集团有限公司 | Basement outer wall foundation groove regenerated material backfilling and compacting system and construction method |
| CN110820790B (en) * | 2019-11-21 | 2022-07-05 | 太原理工大学 | Synchronous water injection humidifying construction process for lime-soil compaction pile |
| CN110820789A (en) * | 2019-11-21 | 2020-02-21 | 太原理工大学 | Synchronous water injection humidifying device for lime-soil compaction pile |
| CN116201101A (en) * | 2023-02-28 | 2023-06-02 | 中国十七冶集团有限公司 | Construction method of ultra-long plain soil compaction pile in collapsible loess area with low water content |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5163972B1 (en) * | 2012-06-13 | 2013-03-13 | 強化土株式会社 | Injection pipe device and injection method |
| CN103835292B (en) * | 2013-12-17 | 2015-09-02 | 建基建设集团有限公司 | High frequency vibrating rushes the construction method of base-extending deposited pile tube |
| CN103835284B (en) * | 2014-02-21 | 2015-10-07 | 安徽省公路桥梁工程有限公司 | A kind of Pile In Drill In Karst Terrain structure and construction method |
| CN106381869A (en) * | 2016-01-27 | 2017-02-08 | 浙江省东阳第三建筑工程有限公司 | Double-protective barrel impact pile-forming method at silt rock soil layer |
| CN105970911B (en) * | 2016-07-01 | 2018-12-28 | 王继忠 | A kind of processing method of big thickness collapsible loess |
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