CN108049399A - A kind of cement-soil stirring pile construction method of anti-foundation liquefaction - Google Patents
A kind of cement-soil stirring pile construction method of anti-foundation liquefaction Download PDFInfo
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- CN108049399A CN108049399A CN201711461479.9A CN201711461479A CN108049399A CN 108049399 A CN108049399 A CN 108049399A CN 201711461479 A CN201711461479 A CN 201711461479A CN 108049399 A CN108049399 A CN 108049399A
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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
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/24—Placing by using fluid jets
Abstract
The present invention provides a kind of cement-soil stirring pile construction method of anti-foundation liquefaction, pre-buried pore pressure gauge and vertical steel bar is arranged before cement-soil stirring pile construction at the scene, by to the monitoring of the excess pore water pressure of soil body generation in work progress and the performance changed to soil structures, construction is adjusted using the measure of " deceleration increment ", so as to be taken into account the construction method of efficiency and safety simultaneously.For the present invention on the premise of cement-soil stirring pile construction progress is ensured, the influence of control surrounding soil disturbance effectively reduces the liquefaction of composite foundation, and short construction period, major mechanical equipment used is few, can widely popularize.
Description
Technical field
It is related to Construction of Civil Engineering field, the more particularly to foundation stabilization construction in geotechnical engineering.
Technical background
In civil engineering, there are draining concretion method, surface layer logos for the common method of the consolidation process of subgrade, put
It changes method and pours into solidfied material method.Cement mixing method be pour into a kind of mode and geotechnical engineering in solidification method for
One of most common method of subgrade；Its principle is by the use of cement as curing agent, by special Mixing Machine, in ground depth
Weak soil and curing agent action of forced stirring using generated a series of physical between curing agent and weak soil are chemically reacted, made soft by place
Soil hardens into the high-quality ground with globality, water stability and some strength.Due to being that forcibly changing natural rock-filled structure is come
Achieve the purpose that reinforcing, so the construction of cement mixing method limits live hydrogeologic condition.Cement mixing method
Construction start late in China, Development Technology is not also very ripe, although tentatively to each item data and unknown during construction
Variation carries out check analysis, but is ignored there are still many details or can not also some problems be provided with one effectively
Solution.
In the prior art, soil cement hybrid test, bearing capacity of foundation etc. have been carried out before cement-soil stirring pile construction
Real data compares when experiment is as construction, and error and variable factor are reduced to reach to maximize；But in construction because forcing
Sinking extrusion soil, the disturbance to soil structures cause the rising of surrounding soil structure pore water pressure to become excess pore water pressure,
Cause in foundation liquefaction problem, be often ignored.Excess pore water pressure can slowly dissipate with the time, so most people is thought
It is not necessary to labour is spent to go to handle again, it is only necessary to which maintenance for a long time treats that it dissipates.However just just as buterfly effect,
Cause the generation of engineering accident, be usually all excess pore water pressure and the soil body as caused by ignored inappreciable variation
Disturbed belt come foundation liquefaction, can when reaching a certain level foundation failure, occur building sink, tilt even collapse
Phenomenon can not only influence live place safety, return periphery building services and bring harm.Old friends are in cement-soil stirring pile construction
It is targetedly efficiently modified on secure context in the process, it is necessary to make.
The content of the invention
In order to solve the above technical problems, preventing the harm that foundation liquefaction is brought during cement-soil stirring pile construction, the present invention carries
For a kind of cement-soil stirring pile construction method of perfect anti-foundation liquefaction.Relatively existing Cement Mixing Pile Construction Technology,
The present invention proposes the monitoring of the excess pore water pressure generated in the construction process to the soil body, by adjusting ram machine construction process control
Excess pore water pressure processed persistently rises, so as to be taken into account the construction method of efficiency and safety simultaneously.It is ensureing that soil cement stirs
On the premise of mixing pile driving construction progress, the influence of control surrounding soil disturbance effectively reduces the liquefaction of composite foundation.
It is realized by following technical proposals：A kind of cement-soil stirring pile construction method of anti-foundation liquefaction, including with
Lower step:
A. levelling of the land is first carried out before constructing, including removing the barrier in earth's surface sundries weeds and underground 0.5m；Underground obstacle
The cleaning of object needs, to the earth excavation in the 0.5m of underground, to clean up all barriers, the obsolete equipments such as including underground piping,
In case of the soil properties such as mud need to change filling out.After the completion of cleaning, the free from admixture spoil of 1/2 excavated volume is backfilled, carries out whole earth's surface
Bad reality.
B. city's roads carry out stake position positioning, and number and mark, after treating the positioning of all piles position, outside pile group scope
Drill embedded pore pressure gauge at 3m, and in the trend of encirclement, each pore pressure gauge horizontal interval is about 10m；Horizontal direction
After burying well, it can correspond to and bury in vertical direction, the pore pressure gauge interval of vertical direction preferably takes 3~5m, respectively in underground
It is buried at 5m, 8m and 12m；It is vertical it is embedded can comprehensive monitoring cement mixing method from pile crown to the Super-void Water Pressure at stake bottom
Power.It needs to be filled up with a small amount of fine sand around pore pressure gauge, finally with bentonite sealing of hole and consolidate.Pore pressure gauge is by leading
Line connects field monitoring equipment.
C. vertical steel bar is inserted at the outer 5m of pile group scope, is arranged in the form of fence by certain amount.Steel bar uses section face
Product is no more than 1cm2, length be about 15m reinforcing rod, part of it insertion the soil body in, another part it is exposed in earth's surface height at least
1.5m need to make its exact vertical horizontal plane, and record verticality with measurement as requested.The design of its arrangement pitch is about 7m.This
The purpose of design is the variation that indirect operation soil disturbance occurs.
D. after the completion of every preparation, cement slurrying is carried out, pulp storage tank is put into after making.
E. stake machine is in place, and stake machine stirring-head is directed at above-mentioned marking pile position, and error is no more than 50mm, then carries out stake machine tune
It is flat, pumping installations and monitor are installed, monitoring device is connected by conducting wire.Pumping installations is the storage slurry being connected with stake machine
Pond, monitor include the flow sensor mounted on feed pipe for mortar, the speed probe on agitating shaft and mounted on drilling rods
On displacement sensor.
F. cement mixing method is formally constructed, using the technological process of routine " two sprays four are stirred ".Entire process construct into
During row, arrange special messenger's real-time monitoring record scene soil body pore water pressure force value in monitoring device, if occur its value it is exceeded and
At any time in ascendant trend is continued, construction personnel can take the measure of " deceleration increment " to adjust Soil-cement according to feedback information
The parameter and process of pile driving construction.
Further illustrate, the measure of above-mentioned " deceleration increment ", be by change for the first time drill bit of pile machine rotate fall rate and
Whitewashing amount subsequently increases the primary parameter repetition equal with variable quantity before and sinks in the process of original " two sprays four are stirred " again
A kind of method of the process stirred with promotion to keep each parameter total amount constant.Detailed method is：Draft the basis of this process
Parameter is, a drill bit stirs subsidence velocity as 0.8m/min in advance, stake machine rotating speed 48r/min, and whitewashing amount 40L/min is once promoted
Bit speed is 1.7m/min, and stake machine rotating speed is 40r/min, whitewashing amount 20L/min, and the secondary stirring subsidence velocity that repeats is
1.2m/min, stake machine rotating speed 40r/min, whitewashing amount 20L/min, secondary to repeat stirring to promote speed be 1.7m/min, stake machine
Rotating speed is 40r/min, whitewashing amount 20L/min；Using this technological parameter as without considering soil disturbance, under the influence of excess pore water pressure
Preferable construction parameter.Since the generation main cause of excess pore water pressure is an extruding when drill bit stirs sinking in advance to the soil body
Disturbance, changes original pore water pressure field, thus when measurement the variation of pore water pressure force value for excess pore water pressure when, can be
A drill bit is stirred subsidence velocity in advance in next position construction and is adjusted to 0.4m/min, stake machine adjustment of rotational speed is 48r/min, is sprayed
Slurry amount is 20L/min；Drill bit of pile machine can so reduced the pressure of the soil body when entering the soil body, is more by bit
The inertia force of cutting has reached the influence reduced to surrounding soil disturbance.For make up a drill bit stir in advance subsidence velocity, rotating speed and
The defects of variation of whitewashing amount brings Soil-cement effect bad can increase the whitewashing stirring that third time is repeated and promoted
Process as example, repeats stirring subsidence velocity as 0.4m/min, stake machine rotating speed 48r/min, whitewashing amount 10L/min three times,
The secondary stirring promotion speed that repeats is 1.7m/min, and stake machine rotating speed is 40r/min, whitewashing amount 10L/min；It so can be in not shadow
In the case that Xiangshui County's soil stirs evenly, the working procedure of cement mixing method is had adjusted, effectively reduces the influence of soil disturbance.
It further illustrates, if above-mentioned regulating measures still cannot inhibit continuing to increase for pore water pressure, to prevent super hole
When gap water pressure is reached to a certain degree, soil becomes flowable water and soil mixture, and the situation of foundation liquefaction need to be right immediately
The vertical steel bar set in step c carries out ceiling hammer inspection.It, can when examining vertical steel bar gradient not above 3 ° with ceiling hammer
It rests and continues to construct after 1h, conversely, illustrating that live soil structures have changed significantly, construction should be interrupted at this time, carry out field
Ground periphery support work, and a machine and relevant device are removed in time to reduce the pressure to ground, carry out the scene of construction interval
Protection and temporary drainage measure prevent foundation liquefaction from deepening that the soil body is triggered to sink, tilt, avalanche phenomenon.Treat pore pressure gauge
After numerical value is back to normal, it is further continued for constructing.
H. the step of shutting down and be displaced to another position, repeating above-mentioned e~f is constructed（If the dangerous negligible step of no foundation liquefaction
" deceleration increment " measure in rapid f）, until whole stake position constructions are completed.
I. site clearing, takes out pore pressure gauge and vertical steel bar, and backfill original soil compacting finally carries out necessary maintenance
And engineering detecting.
Beneficial effects of the present invention：
The situation 1. pore water of the present invention pore pressure gauge monitoring field soil body pre-buried before cement-soil stirring pile construction is had a meeting, an audience, etc. well under one's control,
The embedded of pore pressure gauge has chosen optimal monitoring position, in addition to horizontally embedded, also increases burying for subsurface, vertical direction
If not only ensureing in its monitoring process from construction infection, the excess pore water pressure that all directions generate when can also be to construction is complete
Monitor to orientation；Working procedure is adjusted in the method for " deceleration increment " in work progress, not influencing, Soil-cement is uniform
In the case of, effectively reduce the influence of soil disturbance.
2. the present invention also sets the vertical steel bar of observation soil body shock wave at the construction field (site), with the arranged for interval of 7m in stake
At the outer 5m of group's scope, the object of reference of safe construction alternative scheme is can not only be used for, a machine and personnel activity will not be hampered, in time
Field Force's early warning is given, the disaster for preventing the setting of ground occurred suddenly from bringing.
Description of the drawings
Fig. 1 is to intend construction site floor plan.
Fig. 2 is that the pore pressure gauge is buried, vertical steel bar is buried and cement mixing method Profile Correlation figure.
Diagram mark is as follows：1st, vertical steel bar plugs a little；2nd, pore pressure gauge is buried a little；3rd, stake site；4th, vertical steel
Item；5th, cement mixing method；6th, conducting wire；7th, swelled ground；8th, pore pressure gauge；9th, fine sand layer.
Specific embodiment
Invention is described further with specific example below in conjunction with the accompanying drawings.
Embodiment：It is now right based on wet shot method since cement-soil stirring pile construction is mainly that wet shot method is relatively conventional
The present invention is further described.
A kind of cement-soil stirring pile construction method of anti-foundation liquefaction first carries out levelling of the land, including clear before constructing first
Except the barrier in earth's surface sundries weeds and underground 0.5m；The cleaning of underground obstacle needs to open the earthwork in the 0.5m of underground
It digs, all barriers is cleaned up, the obsolete equipments such as including underground piping, in case of the soil properties such as mud need to change filling out.It has cleared up
Cheng Hou backfills the free from admixture spoil of 1/2 excavated volume, carries out the bad reality of whole earth's surface.
Secondly, city's roads carry out stake position positioning, and number and mark, after treating the positioning of all piles position, in pile group model
The embedded pore pressure gauge that drills at outer 3m is enclosed, in the trend of encirclement, each pore pressure gauge horizontal interval is about 10m；It is horizontal
After direction is buried, it can correspond to and bury in vertical direction, the pore pressure gauge interval of vertical direction preferably takes 3~5m, exists respectively
It is buried at underground 5m, 8m and 12m.It needs to be filled up with a small amount of fine sand around pore pressure gauge, finally with bentonite sealing of hole and consolidate.
Pore pressure gauge connects field monitoring equipment by conducting wire.
Specifically, vertical steel bar is inserted at the outer 5m of pile group scope, is arranged in the form of fence by certain amount.Steel bar uses
Area of section is no more than 1cm2, length be about 15m reinforcing rod, part of it insertion the soil body in, another part is exposed in earth's surface
Height at least 1.5m need to make its exact vertical horizontal plane, and record verticality with measurement as requested.Its arrangement pitch designs
7m.The purpose of this design is the variation that indirect operation soil disturbance occurs.
After the completion of every preparation, cement slurrying is carried out, pulp storage tank is put into after making.Subsequent stake machine is in place, and stake machine stirs
It mixes head and is directed at above-mentioned marking pile position, error is no more than 50mm, then carries out stake machine leveling, pumping installations and monitor are installed
It is good, monitoring device is connected by conducting wire.Pumping installations is the pulp storage tank being connected with stake machine, and monitor is included mounted on feed pipe for mortar
Flow sensor, the speed probe on agitating shaft and the displacement sensor on drilling rod.
Next start cement mixing method formally to construct, using the technological process of " two sprays four are stirred ".Start stake machine, start
It to the lower brill of stake position positioning whitewashing, treats that drill bit sinks down into designed elevation, stops sinking, reversion promotion drill bit, carries after the 10s that persistently whitewashes
It need not stop whitewashing when rising, until being promoted to pile crown position, carry out once being promoted to whitewash to here stirring twice；Then
It stirs sinking again again, stirs whitewashing again and rise, then complete " two sprays four are stirred " process of a stake position.When entire process constructs progress,
Special messenger's real-time monitoring record scene soil body pore water pressure force value in monitoring device is arranged, if it is exceeded and at any time that its value occurs
In lasting ascendant trend, construction personnel can take the measure of " deceleration increment " to adjust cement-soil stirring pile construction according to feedback information
Parameter and process.
It further illustrates, the measure of above-mentioned " deceleration increment ", detailed method is：The underlying parameter for drafting this process is,
Drill bit stirs subsidence velocity as 0.8m/min in advance, and stake machine rotating speed 48r/min, whitewashing amount 40L/min once promote bit speed
For 1.7m/min, stake machine rotating speed is 40r/min, and whitewashing amount 20L/min, the secondary stirring subsidence velocity that repeats is 1.2m/min, stake
Machine rotating speed 40r/min, whitewashing amount 20L/min, the secondary stirring promotion speed that repeats is 1.7m/min, and stake machine rotating speed is 40r/
Min, whitewashing amount 20L/min；Using this technological parameter as without considering soil disturbance, the preferable construction under the influence of excess pore water pressure
Parameter.Since the generation main cause of excess pore water pressure is that the extruding of the soil body is disturbed when a drill bit stirs sinking in advance, change
Original pore water pressure field, thus when measurement the variation of pore water pressure force value for excess pore water pressure when, can in next stake
A drill bit is stirred subsidence velocity in advance in the construction of position and is adjusted to 0.4m/min, stake machine adjustment of rotational speed is 24r/min, and whitewashing amount is
20L/min；Drill bit of pile machine can so reduced the pressure of the soil body when entering the soil body, is cut by bit
Inertia force has reached the influence reduced to surrounding soil disturbance.Subsidence velocity, rotating speed and whitewashing amount are stirred in advance to make up a drill bit
Variation the defects of bringing Soil-cement effect bad, the whitewashing agitating procedure that third time is repeated and promoted can be increased,
As example, it is 0.4m/min to repeat stirring subsidence velocity three times, stake machine rotating speed 24r/min, whitewashing amount 10L/min, secondary heavy
It is 1.7m/min that multiple stirring, which promotes speed, and stake machine rotating speed is 40r/min, whitewashing amount 10L/min；Can so cement not influenced
In the case that soil stirs evenly, the working procedure of cement mixing method is had adjusted, effectively reduces the influence of soil disturbance.
It further illustrates, if above-mentioned regulating measures still cannot inhibit continuing to increase for pore water pressure, to prevent super hole
When gap water pressure is reached to a certain degree, soil becomes flowable water and soil mixture, and the situation of foundation liquefaction need to be right immediately
The vertical steel bar set in step c carries out ceiling hammer inspection.It, can when examining vertical steel bar gradient not above 3 ° with ceiling hammer
It rests and continues to construct after 1h, conversely, illustrating that live soil structures have changed significantly, construction should be interrupted at this time, carry out field
Ground periphery support work, and a machine and relevant device are removed in time to reduce the pressure to ground, carry out the scene of construction interval
Protection and temporary drainage measure prevent foundation liquefaction from deepening that the soil body is triggered to sink, tilt, avalanche phenomenon.Treat pore pressure gauge
After numerical value is back to normal, it is further continued for constructing.
It if dangerous without foundation liquefaction, constructs by normal procedure, treats that previous stake position construction is completed, shutdown is displaced to another stake
The step of position, repetition above-mentioned e~f, constructs, until whole stake positions constructions are completed.Pore pressure gauge is taken out in last site clearing
With vertical steel bar, backfill original soil compacting finally carries out necessary maintenance and engineering detecting.
The above are the present invention using wet shot method as the preferred embodiment of this cement-soil stirring pile construction method, the invention is not restricted to
This, is suitble to all Cement Mixing Pile Construction Technologies, without departing from the principles of the present invention, makes and obviously changing
Into obtained result is still within the scope of the present invention.
Claims (5)
1. a kind of cement-soil stirring pile construction method of anti-foundation liquefaction, it is characterized in that, comprise the following steps：
A. levelling of the land is first carried out before constructing, including removing the barrier in earth's surface sundries weeds and underground 0.5m；
B. city's roads carry out stake position positioning, and number and mark, after treating the positioning of all piles position, outside pile group scope at 3m
The embedded pore pressure gauge of drilling, in the trend of encirclement, it is about 10m that horizontal direction, which buries each pore pressure gauge interval, vertically
The pore pressure gauge interval in direction takes 3~5m, is buried respectively at underground 5m, 8m and 12m；It needs to use around pore pressure gauge
A small amount of fine sand fills up, and finally with bentonite sealing of hole and consolidates, passes through conducting wire and connect field monitoring equipment；
C. vertical steel bar is inserted at the outer 5m of pile group scope, the fence form for being about 7m by design interval arranges, and steel bar uses section face
Product is no more than 1cm2, length be about 15m reinforcing rod, part of it insertion the soil body in, another part it is exposed in earth's surface height at least
1.5m need to make its exact vertical horizontal plane, and record initial perpendicular degree with measurement as requested；
D. after the completion of every preparation, cement slurrying is carried out, pulp storage tank is put into after making；
E. stake machine is in place, and stake machine stirring-head is directed at above-mentioned marking pile position, and error is no more than 50mm, then carries out stake machine leveling,
Pumping installations and monitor install, and monitoring device is connected by conducting wire；
F. cement mixing method is formally constructed, using the technological process of routine " two spray four stirs ", entire process construct carry out when,
Special messenger's real-time monitoring record scene soil body pore water pressure force value in monitoring device is arranged, if it is exceeded and at any time that its value occurs
In lasting ascendant trend, construction personnel takes the measure of " deceleration increment " to adjust cement-soil stirring pile construction according to feedback information
Parameter and process；
H. the step of shutting down and be displaced to another position, repeating above-mentioned e~f is constructed, until whole stake position constructions are completed；
I. site clearing, takes out pore pressure gauge and vertical steel bar, and backfill original soil compacting finally carries out necessary maintenance and work
Journey detects.
2. a kind of cement-soil stirring pile construction method of anti-foundation liquefaction according to claim 1, it is characterized in that, the step
The mode of underground obstacle cleaning is in rapid a：It needs, to the earth excavation in the 0.5m of underground, to clean up all barriers, wrap
The obsolete equipments such as underground piping are included, in case of mud soil property need to change filling out；After the completion of cleaning, the free from admixture of 1/2 excavated volume is backfilled
Spoil carries out the bad reality of whole earth's surface.
3. a kind of cement-soil stirring pile construction method of anti-foundation liquefaction according to claim 1, it is characterized in that, the step
Monitor includes the flow sensor mounted on feed pipe for mortar, the speed probe on agitating shaft and mounted on brill in rapid e
Displacement sensor on bar.
4. a kind of cement-soil stirring pile construction method of anti-foundation liquefaction according to claim 1, it is characterized in that, it is described
" deceleration increment " measure taken after excess pore water pressure generates is detected in step f to be rotated by changing drill bit of pile machine for the first time
It is equal with variable quantity before subsequently to increase primary parameter in the process of original " two sprays four are stirred " again for fall rate and whitewashing amount
Repetition sink and promoted stirring process.
5. a kind of cement-soil stirring pile construction method of anti-foundation liquefaction according to claim 1 or 4, it is characterized in that, institute
It states and also has alternative mean in step f, i.e., still cannot inhibit excess pore water pressure after " deceleration increment " measure taken
During increase, need to ceiling hammer inspection be carried out to the vertical steel bar set in step c immediately, the specific method of inspection is：It is examined with ceiling hammer
When testing vertical steel bar gradient not above 3 °, it can rest and continue to construct after 1h, conversely, illustrating that live soil structures have had substantially
Variation, construction should be interrupted at this time, carry out place periphery support work, and remove a machine and relevant device in time to reduce over the ground
The pressure of base carries out the construction scene protection of interval and temporary drainage measure, after pore water pressure count value is back to normal, then
Continue to construct.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711461479.9A CN108049399A (en) | 2017-12-28 | 2017-12-28 | A kind of cement-soil stirring pile construction method of anti-foundation liquefaction |
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| CN201711461479.9A CN108049399A (en) | 2017-12-28 | 2017-12-28 | A kind of cement-soil stirring pile construction method of anti-foundation liquefaction |
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| CN108049399A true CN108049399A (en) | 2018-05-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112301953A (en) * | 2020-11-25 | 2021-02-02 | 廊坊中达水利工程有限公司 | Construction method for river course slope protection slope toe by cement soil mixing pile |
| CN114991109A (en) * | 2022-05-25 | 2022-09-02 | 西南石油大学 | Stress deformation monitoring and early warning system for pile sinking construction of adjacent existing line soil-squeezing pile |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1208801A (en) * | 1998-09-29 | 1999-02-24 | 李铁恒 | Cement and earth mixed pile for pore-filling and construction method therefor |
| CN102720192A (en) * | 2012-05-18 | 2012-10-10 | 程松林 | Construction method for piling prestressed concrete hollow pile into thick-layer soft soil processed by cement mixing piles |
| CN105113496A (en) * | 2015-08-11 | 2015-12-02 | 中铁建大桥工程局集团第五工程有限公司 | Construction method for soil-cement mixing piles |
| CN105926597A (en) * | 2016-04-26 | 2016-09-07 | 浙江水利水电学院 | Cement mixing pile treatment method suitable for reclamation projects |
-
2017
- 2017-12-28 CN CN201711461479.9A patent/CN108049399A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1208801A (en) * | 1998-09-29 | 1999-02-24 | 李铁恒 | Cement and earth mixed pile for pore-filling and construction method therefor |
| CN102720192A (en) * | 2012-05-18 | 2012-10-10 | 程松林 | Construction method for piling prestressed concrete hollow pile into thick-layer soft soil processed by cement mixing piles |
| CN105113496A (en) * | 2015-08-11 | 2015-12-02 | 中铁建大桥工程局集团第五工程有限公司 | Construction method for soil-cement mixing piles |
| CN105926597A (en) * | 2016-04-26 | 2016-09-07 | 浙江水利水电学院 | Cement mixing pile treatment method suitable for reclamation projects |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112301953A (en) * | 2020-11-25 | 2021-02-02 | 廊坊中达水利工程有限公司 | Construction method for river course slope protection slope toe by cement soil mixing pile |
| CN114991109A (en) * | 2022-05-25 | 2022-09-02 | 西南石油大学 | Stress deformation monitoring and early warning system for pile sinking construction of adjacent existing line soil-squeezing pile |
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Application publication date: 20180518 |