CN107905212A - A kind of construction method of original position water filling element earth pile composite foundation - Google Patents
A kind of construction method of original position water filling element earth pile composite foundation Download PDFInfo
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- CN107905212A CN107905212A CN201710888780.1A CN201710888780A CN107905212A CN 107905212 A CN107905212 A CN 107905212A CN 201710888780 A CN201710888780 A CN 201710888780A CN 107905212 A CN107905212 A CN 107905212A
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- pile
- hole
- water injection
- water filling
- injection pipe
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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
- 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 include smooth site clearing, surveying setting-out, construction equipment assembling is in place, draw hole, water filling humidification, tube drawing secondary punching, bottom are rammed and fall soil, filler humidification, layering filler, compacted compacting pore-forming in hole after rise, remove top loosening layer, spread out and put on the step of compacting.Using construction method of the present invention, can form compound foundation, have and save construction machinery, reduce construction cost, improve work 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, more particularly to a kind of water filling element earth pile in situ is answered
The construction method of ground is closed, suitable for the deep soft soil treatment of the engineerings such as highway, dykes and dams, building construction.
Background technology
China has a vast territory, complex geologic conditions and various regions difference is larger, and loess foundation classification is more, distribution is wide；Particularly
There is deep loess foundation in northwest Gansu.With the further development of China's economy, loess area requirement in northwest is necessarily carried
Rise, also so that northwest loess engineering quantity and scale constantly expand.Seek advanced technology, economical rationality, easy for construction, quality is steady
The ultra-deep Loess Subgrade mode that fixed, high capacity, material save, the feature of environmental protection is strong is asked as geotechnical engineering circle is urgently to be resolved hurrily
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.
Method soil compaction pore-forming in ground, then rams into hole and fills out plain native pile.During pile, made by the transverse shear stress in pore forming process
With the soil in stake holes enables inter-pile soil compacted around being pressed against, and element native (cohesive soil) layering got ready then is inserted stake holes
It is interior, and tamping is layered to designed elevation.With the pile body of plain native compaction in layers, be known as native compaction pile, the latter respectively with compacted stake
Between local soil type into composite foundation, bear the upper load on basis jointly.General driving depth control is between 10-12 meters, for ultra-deep
Base processing does not use such a 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, there is an urgent need for 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.
The content of the invention
The characteristics of 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 handles the problem of depth is limited using specific water filling element earth pile composite foundation construction method in situ to overcome.
In order to realize above-mentioned purpose, present invention employs following technical scheme：
A kind of construction method of original position water filling element earth pile composite foundation, 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 drilling machine is laid in designated position；
(3) construction equipment assembling is in place：Hole water filling hidden pipe pile machine and its stent are drawn in assembling, and assembling, which is rammed, expands equipment, completes stake
Proceeded by after base degree control, water injection equipment debugging and draw hole water filling pipe pile settling construction；
(4) hole is drawn：Start after completing pile foundation degree control, water injection equipment debugging with hidden pipe pile machine in low-water-content loess
(1) hammering is carried out on and draws 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), ring-shaped pouring
Water pipe (24) Gong She tri-, respectively positioned at the upper, middle and lower of immersed tube (10) outer wall, vertical water injection pipe (23) and water injection pipe
A (22) is fixed on immersed tube (10) inner wall；Pouch (19) is equipped with the upper and lower part of immersed tube (10), rear expanding unit is arranged on bottom
On immersed tube (10) outer wall under pouch (19)；
(5) water filling is humidified：Draw and section is divided according to pile body scope soil layer moisture content during hole, according to Soil Parameters, contain
Water rate test coefficient, infiltration coefficient, single hole humidification scope carry out quantitative timing water filling, and vertical water injection pipe (23), ring are pressed by having
Shape water injection pipe (24) water filling, while from water injection pipe A (22) to pouch (19) water filling, expand pouch (19), squeezed with surrounding humidification
The compacted formation water-stop sheets of Mi Qu (4), pouch (19) expansion pull connection steel wire (21) and rear expansion board (12) outwards, are formed overall
Formula supports；
(6) tube drawing secondary punching：Downward borehole pulls out immersed tube (10) on behind designated position, starting, and is pulled out after the completion of hole to be drawn
Pipe to half hole depth, hole wall falls soil after rise because impact is formed, and is fallen after rise using vertical water injection pipe (23), annular water injection pipe (24) humidification
Soil, secondary punching, extruding compacting fall soil after rise；
(7) bottom, which is rammed, falls soil after rise：Ram and expand equipment progress Ramming operation, with the fixation pile top (26) on hammer ram (25), ram and expand plate
(27) compacting falls soil after rise, is formed and falls native rammed bulb pile end (5) after rise；
(8) filler is humidified：It is humidified by optimum moisture content shelving；
(9) filler is layered in hole：Divided according to hammer ram parameter, ramming times, filler parameter division single depth of packing
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 forming element earth pile (6) into hole edge filling tamped is compacted；
(11) remove top and loosen layer：Because after drawing hole, ramming, surface soil layer loosens, table is removed according to condition of construction
Face loosens layer, changes to fill out and rolls loading plate (7)；
(12) compacting is spread out and put on：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), limiting plate (14), engaging lug after described
(18), steel wire (21) composition is connected, connection steel wire (21) one end is connected in pouch (19), and one end is connected to engaging lug (18)
On.
In above-mentioned construction method, long spire rotary drill machine, rotation control drilling machine, hammering can be also used in addition to hole water filling hidden pipe pile machine is drawn
Sinking tube compacted stake machine.Draw according to pile body scope soil layer moisture content sectional during hole, according to Soil Parameters, moisture content is examined
Coefficient, infiltration coefficient, single hole humidification scope, with most excellent moisture content, index carries out quantitative timing water filling in order to control, if uses
There is pressure injection water and stand resolution time.If desired by vertical water injection pipe (23), annular water injection pipe (24) and pouch (19)
As water-stop sheet water proof.The uniform water filling humidification in immersed tube tube drawing process mesoporous top.
Using the present invention water filling element earth pile composite foundation construction method in situ, can form compound foundation, have section
Construction machinery is saved, reduces construction cost, improves work efficiency, reduces noise and mud pollution, consumption dregs keeps the excellent of environment
Point.
Brief description of the drawings
Fig. 1 is water filling element earth pile composite foundation diagrammatic cross-section in situ；
Fig. 2 is to draw hole water filling hidden pipe pile machine schematic diagram；
Fig. 3 is pile layout plan；
Fig. 4 is to draw hole water filling 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 to draw hole water filling 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 layers of 2-, 3- miscellaneous fills, the compacted area of 4- humidifications, 5- fall native rammed bulb pile end, 6- elements after rise
Native compaction pile, 7- roll loading plate, 8- Soft Soil Layers, 9- with respect to hard stratum, 10-immersed tube, 11-fixed plate, 12-rear expansion board,
13-spring, 14-limiting plate, 15-pile top, 16-expansion board, 17-movable plate, 18-engaging lug, 19-pouch, 20-note
Water hole, 21-connection steel wire, 22-water injection pipe A, 23-vertical water injection pipe, 24-annular water injection pipe, 25- hammer rams, 26- spud piles
Point, 27-, which are rammed, expands plate.
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 the embodiment the present invention relates to structure.
Fig. 1 is water filling element earth pile composite foundation diagrammatic cross-section in situ of the invention.It is used for original position with reference to shown in Fig. 8
The hidden pipe pile machine of water filling element earth pile construction, 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, respectively positioned 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；Be equipped with pouch 19 in the upper and lower part of immersed tube 10, rear expanding unit be arranged on 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, limiting plate 14, engaging lug 18, company afterwards
Connect steel wire 21 to form, 21 one end of connection steel wire is connected in pouch 19, and one end is connected on engaging lug 18.
Water filling element earth pile composite foundation in situ shown in Fig. 1 includes element earth pile 6 and rolls loading plate 7, element soil
6 bottom of compaction pile is falls native rammed bulb pile end 5 after rise, formed with the compacted area 4 that is humidified 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 drilling machine is laid in designated position；
(3) construction equipment assembling is in place：Hole water filling hidden pipe pile machine and its stent are drawn in assembling, and assembling, which is rammed, expands equipment, completes stake
Proceeded by after base degree control, water injection equipment debugging and draw hole water filling pipe pile settling construction；
(4) hole is drawn：Start after completing pile foundation degree control, water injection equipment debugging with hidden pipe pile machine in low-water-content loess
Hammering is carried out on 1 and draws hole, 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 arranged on 10 outer wall of immersed tube under bottom pouch 19；
(5) water filling is humidified：Draw and section is divided according to pile body scope soil layer moisture content during hole, according to Soil Parameters, contain
Water rate test coefficient, infiltration coefficient, single hole humidification scope carry out quantitative timing water filling, and vertical water injection pipe 23, annular are pressed by having
24 water filling of water injection pipe, while from water injection pipe A22 to 19 water filling of pouch, expand pouch 19, with the compacted 4 compacted shape of area of surrounding humidification
Into water-stop sheet, the expansion of pouch 19 pulls connection steel wire 21 and rear expansion board 12 outside, forms integral support；
(6) tube drawing secondary punching：Downward borehole pulls out immersed tube 10 on behind designated position, starting, tube drawing after the completion of hole to be drawn
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, extruding compacting fall soil after rise；
(7) bottom, which is rammed, falls soil after rise：Ram and expand equipment progress Ramming operation, expand plate 27 with the fixation pile top 26 on hammer ram 25, rammer and ram
It is real to fall soil after rise, formed and fall native rammed bulb pile end 5 after rise；
(8) filler is humidified：It is humidified by optimum moisture content shelving；
(9) filler is layered in hole：Divided according to hammer ram parameter, ramming times, filler parameter division single depth of packing
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 forming element earth pile 6 into hole edge filling tamped is compacted；
(11) remove top and loosen layer：Because after drawing hole, ramming, surface soil layer loosens, table is removed according to condition of construction
Face loosens layer, changes to fill out and rolls loading plate 7；
(12) compacting is spread out and put on：Surface loosens layer and with backfill carries out place Min layers and fill out to be densified to designed elevation.
Claims (3)
1. a kind of construction method of original position water filling element earth pile composite foundation, 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 drilling machine is laid in designated position；
(3) construction equipment assembling is in place：Hole water filling hidden pipe pile machine and its stent are drawn in assembling, and assembling, which is rammed, expands equipment, completes pile foundation and hangs down
Proceeded by after straight degree control, water injection equipment debugging and draw hole water filling pipe pile settling construction；
(4) hole is drawn：Start after completing pile foundation degree control, water injection equipment debugging with hidden pipe pile machine in low-water-content loess (1)
On carry out hammering and draw 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), ring-shaped pouring
Water pipe (24) Gong She tri-, respectively positioned at the upper, middle and lower of immersed tube (10) outer wall, vertical water injection pipe (23) and water injection pipe
A (22) is fixed on immersed tube (10) inner wall；Pouch (19) is equipped with the upper and lower part of immersed tube (10), rear expanding unit is arranged on bottom
On immersed tube (10) outer wall under pouch (19)；
(5) water filling is humidified：Draw and section is divided according to pile body scope soil layer moisture content during hole, according to Soil Parameters, moisture content
Test coefficient, infiltration coefficient, single hole humidification scope carry out quantitative timing water filling, and vertical water injection pipe (23), ring-shaped pouring are pressed by having
Water pipe (24) water filling, while from water injection pipe A (22) to pouch (19) water filling, 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) outwards, form monoblock type branch
Support；
(6) tube drawing secondary punching：Downward borehole pulls out immersed tube (10) on behind designated position, starting, and tube drawing is extremely after the completion of hole to be drawn
Half hole depth, hole wall is native using vertical water injection pipe (23), annular water injection pipe (24) humidification falling because impact formation falling is native, and two
Secondary punching, extruding compacting fall soil after rise；
(7) bottom, which is rammed, falls soil after rise：Ram and expand equipment progress Ramming operation, with the fixation pile top (26) on hammer ram (25), ram and expand plate (27)
Compacting falls soil after rise, is formed and falls native rammed bulb pile end (5) after rise；
(8) filler is humidified：It is humidified by optimum moisture content shelving；
(9) filler is layered in hole：Carry out layering according to hammer ram parameter, ramming times, filler parameter division single depth of packing and fill out
Material；
(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 survive for four times, while forming element earth pile (6) into hole edge filling tamped is compacted；
(11) remove top and loosen layer：Because after drawing hole, ramming, surface soil layer loosens, surface pine is removed according to condition of construction
Dynamic layer, changes to fill out and rolls loading plate (7)；
(12) compacting is spread out and put on：Surface loosens layer and with backfill carries out place Min layers and fill out to be densified to designed elevation.
2. construction method as claimed in claim 1, it is characterised in that the pile top is equipped with expansion board (16), movable plate
(17)。
3. construction method as claimed in claim 1, it is characterised in that expanding unit is by fixed plate (11), rear extension after described
Plate (12), spring (13), limiting plate (14), engaging lug (18), connection steel wire (21) composition, connection steel wire (21) one end are connected to
In pouch (19), one end is connected on engaging lug (18).
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Cited By (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 |
| CN109706911A (en) * | 2018-12-11 | 2019-05-03 | 天伟建设集团有限公司 | Outer wall of basement foundation trench reworked material backfills closely knit system and construction method |
| CN110820789A (en) * | 2019-11-21 | 2020-02-21 | 太原理工大学 | Synchronous water injection humidifying device for lime-soil compaction pile |
| CN110820790A (en) * | 2019-11-21 | 2020-02-21 | 太原理工大学 | Synchronous water injection humidifying construction process 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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Cited By (7)
| 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 |
| CN109706911A (en) * | 2018-12-11 | 2019-05-03 | 天伟建设集团有限公司 | Outer wall of basement foundation trench reworked material backfills closely knit system and construction method |
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| CN110820790A (en) * | 2019-11-21 | 2020-02-21 | 太原理工大学 | Synchronous water injection humidifying construction process for lime-soil compaction pile |
| 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 |
| 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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|---|---|
| CN107905212B (en) | 2019-08-27 |
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