CN107100182A - Soft foundation cluster type layering precipitation no-arbitrary pricing pipe rams system and its construction method - Google Patents
Soft foundation cluster type layering precipitation no-arbitrary pricing pipe rams system and its construction method Download PDFInfo
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- CN107100182A CN107100182A CN201710347707.3A CN201710347707A CN107100182A CN 107100182 A CN107100182 A CN 107100182A CN 201710347707 A CN201710347707 A CN 201710347707A CN 107100182 A CN107100182 A CN 107100182A
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- 238000001556 precipitation Methods 0.000 title claims abstract description 76
- 238000010276 construction Methods 0.000 title claims abstract description 42
- 239000002689 soil Substances 0.000 claims abstract description 107
- 238000000034 method Methods 0.000 claims abstract description 38
- 230000002787 reinforcement Effects 0.000 claims abstract description 23
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000013461 design Methods 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 16
- 239000011148 porous material Substances 0.000 claims description 15
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 241001365789 Oenanthe crocata Species 0.000 claims 1
- 239000010410 layer Substances 0.000 description 45
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 238000007596 consolidation process Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 239000004576 sand Substances 0.000 description 10
- 238000005056 compaction Methods 0.000 description 8
- 239000004927 clay Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000005553 drilling Methods 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 239000003673 groundwater Substances 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 208000035126 Facies Diseases 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000012407 engineering method Methods 0.000 description 2
- 238000001727 in vivo Methods 0.000 description 2
- 238000009705 shock consolidation Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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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
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
-
- 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
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- Engineering & Computer Science (AREA)
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- Structural Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
A kind of soft foundation cluster type layering precipitation no-arbitrary pricing pipe of the present invention rams system, include multiple cluster types layering precipitation well point of array arrangement it is characterized in that soft foundation cluster type layering precipitation no-arbitrary pricing pipe rams system and the branch pipe of precipitation well point is layered for connecting multiple cluster types, branch pipe connects house steward, house steward connects vavuum pump, and the cluster type layering precipitation well point includes the multiple layering well points set in a wellhole；Multiple layering well points are set by different thickness, and each layering well point is primary Ioops according to the thickness buried, same layering well point, and branch pipe is connected by threeway with each layering well point of same thickness, and each vavuum pump connects the layering well point of same thickness.Soft foundation cluster type layering precipitation no-arbitrary pricing pipe of the present invention rams system and its construction method construction procedure is simple, and short construction period, cost is low, and this method can make to need the bearing eigenvalue of foundation soil in reinforcing scope to significantly improve by reinforcement means from deep to shallow.
Description
Technical field
System and its construction method are rammed the present invention relates to a kind of soft foundation cluster type layering precipitation no-arbitrary pricing pipe（Following letter
Claim " no-arbitrary pricing downcomer rams method "）, it is adaptable to the soft soil that place can not meet design bearing capacity and compactness is added
Gu processing, foundation bearing capacity can be quickly improved by this method, settlement after construction etc. is effectively eliminated.Possession base processing technology field.
Background technology
At present, reclaimed fields from the sea more than coastal area using the method for hydraulic reclamation, i.e., absolute altitude needed for reaching construction with hydraulic reclamation method, by
In new hydraulically filled sludge condition it is complicated, and need to wait for after 1 year or several years after people and plant equipment, conventional hydraulic reclamation can not be gone up, it is on the scene
After one natural crust layer of ground formation, machinery, personnel can enter under conditions of construction, carry out consolidation process.Due to natural envelope
The dry time is too long, influences and constrain the development of coastal area.To such native processing, it is conventional using " vacuum method " or
This few class method of " Vacuum-Surcharge Preloading Method ", Dewatering dynamic compaction carry out consolidation process to soft foundation.
" vacuum method " or " Vacuum-Surcharge Preloading Method " is moulded by being inserted in soft foundation by certain grid
Expect drain bar, set up after vertical drain, set up horizontal drainage passage after each drain bar is connected by ripple chimney filter, then
Must soil mass consolidation and atmospheric isolation sealing in laying geotextiles thereon and sealing secret emissary；According to soil property feelings during practice of construction
Condition need to also set envelope wall on soil mass consolidation periphery, to ensure the sealing property for needing soil mass consolidation, by vacuumizing in the soil body
Free water is discharged, while again using pressure difference carries out densification reinforcing to the soil body between vacuum and atmospheric pressure under film, therefore cost is high, when
Between it is long, it is high to the requirement that is vacuum formed.
Dewatering dynamic compaction rule is, using the steel pipe formation vertical drain for inserting the soil body, each well point to be connected by branch pipe
Pipe, branch pipe connection supervisor, supervisor's connection vavuum pump carry out lowering of watertable, and the condition of certain drawdown is reached in level of ground water
Under, dynamic consolidation construction, or " High vacuum compacting method " are carried out, the technique reinforcement depth is limited by the well-point pipe insertion soil body, its underground
Only 2m drops under water, it is adaptable to shallow layer reinforcement processing, and because well-points dewatering is relevant with the infiltration coefficient of the soil body, it is difficult to it is applicable big face
Product hydraulic reclamation complex foundation is used.
Due to new blast-filled ground, particularly new hydraulically filled sludge, water content is high, low bearing capacity, and uses " vacuum preloading " " true
After empty combined heap load precompacting " method, plastic draining board is deposited in the soil body for having reinforced completion, and its drainage channel still has,
Therefore its consolidation is still continuing, after the completion of construction, when working load occurs, settlement after construction and the rate of settling still after
It is continuous, cause settlement after construction big, differential settlement is produced with the uneven of working load, its time will continue more than 2 years.Draining
Plate buries deeper, and drain bar quality is better, and its settlement after construction, differential settlement time are longer.To find out its cause, being exactly mainly plastics
The drainage channel of drain bar formation is still caused having an effect.
" Dewatering dynamic compaction method " is then due to dynamic compaction reinforced foundation mechanism, although domestic and foreign scholars have been carried out greatly from different perspectives
Quantifier elimination, not yet forms ripe and perfect theory so far, especially with regard to effective reinforcement depth define its influence because
Element is more, in addition to single-rammer energy, also the property of foundation soil, the thickness of different soil and buries order, level of ground water etc., because
This large amount of dynamic consolidation construction practice have shown that, soft soil foundation uses the tamping energy of high-energy, and the reinforcement depth of weak soil do not obtain together
The deepening of ratio, easily causes " spring soil ", soft soil foundation can not recover foundation strength after ramming, or even destroy soil body knot on the contrary
Structure.To find out its cause, the soil condition and level of ground water and hammer ram of soft soil foundation act on every thixotroping mechanism of weak soil with ramming
Procedure coercion compression is rammed to the soil body for energy or to hit its close relation extremely complex, be not it is simple by improve tamping energy just can be with
Reach required effective reinforcement depth, the maximum tamping energy that can be born in weak soil, that is, optimum tamping energy, it is necessary to just arrive
Place, punch-through can then be produced by crossing, vivid in formation " spring soil " engineering practice to liken this to " battering down ", so as to have impact on
Effective reinforcement depth.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency to be rammed there is provided a kind of soft foundation cluster type layering precipitation no-arbitrary pricing pipe
System and its construction method, without adding any filler, by control its precipitation time and pipe ram number can reach by deeply to
Shallow purpose that is close, changing soil body mechanical index and bearing eigenvalue of foundation soil of shaking.
The object of the present invention is achieved like this：
A kind of soft foundation cluster type layering precipitation no-arbitrary pricing pipe rams system, it is characterised in that soft foundation cluster type is layered precipitation
No-arbitrary pricing pipe, which rams system, includes multiple cluster types layering precipitation well point of array arrangement and for connecting multiple cluster types layerings
The branch pipe of precipitation well point, branch pipe connection house steward, house steward's connection vavuum pump, the cluster type layering precipitation well point includes a wellhole
Multiple layering well points of interior setting；Multiple layering well points are set by different thickness, and each layering well point is same according to the thickness buried
Layering well point is primary Ioops, and branch pipe is connected by threeway with each layering well point of same thickness, and each vavuum pump connection is same
The layering well point of thickness.
The tubing that well point uses 32mm is layered, each layering well point lower end 500mm sets filter opening, and filter opening spacing is 250mm
One, 1 ~ 2 layer of 100 mesh nylon leaching net is wrapped at filter opening, and is tightened with iron wire, well-point pipe bottom seal is layered.
A kind of soft foundation cluster type layering precipitation no-arbitrary pricing pipe rams the construction method of system, it is characterised in that it include with
Lower processing step：
Step 1: arrangement soft foundation cluster type layering precipitation no-arbitrary pricing pipe rams system
When pipe rammer reinforcing is carried out to large-area soft foundation, first pass through arrangement soft foundation cluster type layering precipitation no-arbitrary pricing pipe and ram
System carries out vacuum-dewatering, using the squeezing action that pipe buries to soil body generation is rammed, makes the pipe tamping point periphery soil body most of freely
Water and cluster type layering precipitation well point is discharged into reference to water, is drawn water the nothing produced due to the limitation of vacuum so as to solve vacuum
Method carries out the defect of precipitation to deep layer；
Reinforced Step 2: no-arbitrary pricing pipe is rammed
Step 3: shallow layer reinforcement is handled after pipe is rammed.
Step 2: no-arbitrary pricing pipe rams concretely comprising the following steps in reinforcing：
Vibration hammer rams pipe by the formation of flange joint steel pipe, rams the tip that pipe lower end is provided with the retractable flap valve composition of multi-disc,
Main that rammer pipe is squeezed into required depth using vibration hammer, pipe hammer ram is lifted or whereabouts as needed in rammer pipe, following to ramming pipe
The soil body is rammed, and reaches the purpose of compacted compacting.
Step 3: concretely comprising the following steps in shallow layer reinforcement processing after pipe rammer：
Rammed through pipe after reinforcing, index and different bearing eigenvalue of foundation soil are reinforced according to design（Fak) require, adopt
Take full rammer or vibroroller cmpacting or point to ram, carry out shallow-layer processing and i.e. referable and detect；
Such as design bearing eigenvalue of foundation soil（fak）>=80KPa, then can proceed with batch vacuum precipitation, extremely super quiet
When pore pressure dissipation is to more than 90%, into the smooth tamping pit of bull-dozer, using the method for full rammer or vibroroller cmpacting, shallow-layer is carried out
It is referable detection after processing；
Such as design bearing eigenvalue of foundation soil（fak）During >=100KPa, it can be carried out selecting following work according to field condition
Industry step：
Such as pipe can meet bull-dozer, tamping machine and enter after ramming, then can be bulldozed into bull-dozer after tamping pit, carry out strong rammer equipment, carry out
Point is rammed, and under conditions of layering well-points dewatering is not destroyed, tamping point is arranged on pipe tamping point；
Place can not meet bull-dozer, tamping machine and enter after such as pipe is rammed, then needs to keep batch vacuum precipitation, until super quiet pore pressure
When being dissipated to more than 90%, into the smooth tamping pit of bull-dozer, carry out point and ram construction, under conditions of layering well-points dewatering is not destroyed,
Tamping point is arranged on pipe tamping point, and every 2 ~ 4 is hit；
After a rammer construction, continue to keep batch vacuum precipitation until when super quiet pore pressure dissipation is to more than 90%, progress is last
A time full rammer, delivers third party's detection.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, effective reinforcement depth bottleneck is broken through：
Heavy-tamping method applicability is wide, effect is good, low cost, short time limit the features such as, an important technology as China's basement process.
But its effective reinforcement depth is by tamping energy, the property of foundation soil, the thickness of different soil and the shadow for burying order, level of ground water etc.
Ring, constrain the effective reinforcement depth of heavy-tamping method.
The pipe that the characteristics of by strong rammer " fanning out from point to area " is changed to " with longitudinal bands face " rams method for strengthening, and strong rammer technique is tamped by surface layer
Change into and rammed by longitudinal deep layer, reinforcing from deep to shallow reaches the effect of deep-layer reinforcing.So as to be created for soft soil foundation strong rammer
One brand-new method, not only changes dependence of the reinforcement depth to strong rammer tamping energy, so as to break away from high-energy dynamic compaction institute
The hoister in large tonnage needed；And the method rammed by pipe can carry out effective consolidation process to different thickness, different soil properties.
2nd, boundling layering precipitation, is applicable different soil property reduction soil moisture contents
The characteristics of for soft soil foundation " high-moisture percentage, high void ratio, high sensitivity, low-intensity ", the present invention is also entered by ramming pipe
During soil to the extrusion drainage of the soil body, vacuum drainage, to force deep soil Binding in vivo water to be arranged on true between pipe tamping point
Empty well pipe is discharged, and had both been reached the super quiet pore pressure of the soil body after deep layer Dewatering dynamic compaction, and energy rapid dispersion rammer, and had been established to accelerate soil stabilization
Determine solid foundation；
Solving existing vacuum equipment can not be stranded to below the 4m soil bodys because negative pressure of vacuum decays to deep layer generation negative pressure of vacuum
Difficulty, namely the difficulty of deep vacuum precipitation can not be carried out；By ramming extrusion drainage and deep layer rammer that pipe buries to soil body generation
The pressure drainage that process is produced to the soil body is hit, the super quiet pore pressure produced using soil disturbance forces soil body combination water to be discharged into collection
In beam formula layering precipitation well point and by the vacuum pumped soil body, condition has been established for reduction soil moisture content.
3rd, effective reinforcement depth is controllable
Pioneering deep-layer reinforcing technology, its reinforcement depth can be layered precipitation well point control by ramming the placed-depth and cluster type of pipe,
Reinforcement means from deep to shallow, its settlement after construction and the rate of settling do not change with the change of working load, reach change soil nature
Effect, solve difficulty of the current technology to soft soil foundation deep-layer reinforcing.
4th, the consolidation process of the applicable different soft soil foundations of a kind of engineering method
It is a kind of new technology of rapid reinforcement soft soil foundation that no-arbitrary pricing downcomer, which rams method for strengthening, and it is closely knit, crowded that it is built upon strong rammer
Integrated by three kinds of techniques on the basis of pressure water, the construction technology of layering precipitation, the consolidation for effectively solving muck soil is difficult.
It is comprehensive using the effect of the encryption to soil body deep layer is rammed according to soil condition and design requirement in implementation process, managed using ramming
Bury and extrusion drainage and relay precipitation is reached by vacuum-dewatering, make periphery soil body reduction water content and the soil body after rammer is produced
Excess pore water pressure rapid dispersion, the different soil properties of different thickness are taken it is different ram mode, reach that weak soil adds
Gu required all technical, solves the problem of the consolidation of muck soil.A kind of engineering method is different with regard to that can meet complex foundation
Thickness, different depth, the consolidation process of the complex soft soil of different geological conditions.
In summary, soft foundation cluster type layering precipitation no-arbitrary pricing pipe of the present invention rams system and its construction method construction step
Rapid simple, short construction period, cost is low, and this method can make to need the ground in reinforcing scope by reinforcement means from deep to shallow
Soil bearing capacity characteristic value is significantly improved, so as to change the mechanics index of physics of weak soil.By controlling to ram pipe lifting speed and taking out
Water time, the weak soil for being applicable to any property carries out consolidation process, and it reinforces thickness up to 20~30m.
Brief description of the drawings
Fig. 1, cluster type layering precipitation well point set schematic diagram.
Fig. 2, pipe ram device structure schematic diagram.
Fig. 3, soft foundation cluster type layering precipitation no-arbitrary pricing pipe ram system combination pipe tamping point horizontal layout schematic diagram.
Fig. 4, cluster type layering precipitation well point set diagrammatic cross-section.
Fig. 5, no-arbitrary pricing ram pipe and buried draining and soil compaction effect diagram.
Water and soil squeezing effect schematic diagram during Fig. 6, no-arbitrary pricing pipe are rammed.
Fig. 7, no-arbitrary pricing pipe ram the last straw effect diagram.
Wherein：
Solid arrow is lateral soil compaction effect signal；
Dotted arrow is soil body Free water and combines the signal of water extrusion drainage effect；
Curve is the silt soil state under ramming.
Embodiment
Referring to Fig. 1-Fig. 7, a kind of soft foundation cluster type layering precipitation no-arbitrary pricing pipe of the present invention rams system construction
Method, it is comprised the following steps that：
Step 1: arrangement soft foundation cluster type layering precipitation no-arbitrary pricing pipe rams system
Soft foundation cluster type layering precipitation no-arbitrary pricing pipe, which rams system, includes multiple cluster types layering precipitation well point that array is arranged
And the branch pipe of precipitation well point, branch pipe connection house steward, house steward's connection vavuum pump, the boundling are layered for connecting multiple cluster types
Formula layering precipitation well point includes the multiple layering well points set in a wellhole；Multiple layering well points are set by different thickness.Respectively
Well point is layered according to the thickness buried, same layering well point is primary Ioops, respectively connecting branch, branch pipe uses 500mm PVC
Pipe, is connected by threeway with each layering well point of same thickness, and connects supervisor, supervisor's connection vavuum pump, each vavuum pump
Connect the layering well point of same thickness.
It is layered the tubing that well point uses 32mm（Pvc pipe or iron pipe or nylon tube）, each layering well point lower end 500mm
Setting filter opening, filter opening spacing is 250mm mono-, namely each layering well point lower end sets bag at 2 ~ 4 filter openings, filter opening
100 1 ~ 2 layer of mesh nylon leaching nets, and tightened with iron wire, it is layered well-point pipe bottom seal.
Layering well point should carry out mark when burying according to embedded depth, and pouring into medium coarse sand in the borehole wall tamps.
When pipe rammer reinforcing is carried out to large-area soft foundation, arrangement soft foundation cluster type layering precipitation no-arbitrary pricing is first passed through
Pipe rams system and carries out vacuum-dewatering, using the squeezing action that pipe buries to soil body generation is rammed, makes the pipe tamping point periphery soil body most of
Free water and combination water are discharged into cluster type layering precipitation well point, are produced so as to solve vacuum and draw water due to the limitation of vacuum
Can not to deep layer carry out precipitation defect.
Reinforced Step 2: no-arbitrary pricing pipe is rammed
Vibration hammer（Preferably twin motors exciting is hammered into shape）Pipe is rammed by the formation of flange joint steel pipe, length of tube is rammed and is generally 20m, ram pipe
Made using 600 seamless steel pipes.It is main to squeeze into required depth by pipe is rammed using vibration hammer, it is following to ramming pipe by the hammer ram in pipe
The soil body is rammed, and reaches the purpose of compacted compacting.Using the mesopore of vibratory pile drive and extractor twin motors exciting stake, a post is set
The pipe hammer ram of shape, steel cable is connected by stake machine hoist engine, pipe hammer ram is being rammed the interior lifting as needed of pipe or is being fallen.Ram pipe lower end
It is provided with the retractable flap valve of multi-disc（Preferably 4 ~ 6）The tip of composition, its main function is that tip is closed when ramming pipe and burying
Close, when being pulled out on rammer pipe, tip is opened, and the subjacent bed soil body is rammed with sharp pipe hammer ram.
Step 3: shallow layer reinforcement is handled after pipe is rammed
Rammed through pipe after reinforcing, index and different bearing eigenvalue of foundation soil are reinforced according to design（Fak) require, adopt
Take full rammer or vibroroller cmpacting or point to ram, carry out shallow-layer processing and i.e. referable and detect.
Rammed through pipe after reinforcing, according to design index request, such as design bearing eigenvalue of foundation soil（fak）≥
80KPa, then can proceed with batch vacuum precipitation, during to super quiet pore pressure dissipation to more than 90%, be rammed into bull-dozer is smooth
Hole, using the method for full rammer or vibroroller cmpacting, carries out i.e. referable detection after shallow-layer processing；
Such as design bearing eigenvalue of foundation soil（fak）During >=100KPa, it can be carried out selecting following work according to field condition
Industry step：
Such as pipe can meet bull-dozer, tamping machine and enter after ramming, then can be bulldozed into bull-dozer after tamping pit, carry out strong rammer equipment, carry out
Point is rammed, and under conditions of layering well-points dewatering is not destroyed, tamping point is arranged on pipe tamping point, and every 2 ~ 4 is hit（Note keeping true
Airborne water）；
Place can not meet bull-dozer, tamping machine and enter after such as pipe is rammed, then needs to keep batch vacuum precipitation, until super quiet pore pressure
When being dissipated to more than 90%, into the smooth tamping pit of bull-dozer, carry out point and ram construction, under conditions of layering well-points dewatering is not destroyed,
Tamping point is arranged on pipe tamping point, and every 2 ~ 4 is hit（Note keeping vacuum-dewatering）；
After a rammer construction, continue to keep batch vacuum precipitation until when super quiet pore pressure dissipation is to more than 90%, progress is last
A time full rammer, delivers third party's detection.
Case study on implementation：
1st, the geological conditions that report is disclosed is surveyed in base area, is determined cluster type layering precipitation well point arrangement, is determined well point spacing, well point
Array pitch, reinforcement depth and well point is needed to be layered.Below be main Soft Soil Layer distribution situation exemplified by, be followed successively by from top to bottom plough soil,
4th is to rush diluvial formation（Q4al+pl）Silty clay and the 4th be sea-land interbedding facies sedimentary（Qmc）, wherein the 4th is Hai Lu
Interaction phase sedimentary（Qmc）It is divided into mud, silty clay and middle sand again from top to bottom：
（1）Plough soil（Q4pd）：Ash is brown, light yellow, based on cohesive soil, rich in organic soil and root system of plant, in wet, fluffy
State.The layer, 0.4 ~ 2.2m of thickness are met in each drilling of this prospecting.
（2）4th is to rush diluvial formation（Q4al+pl）Silty clay：It is light yellow, grey, light brown, it is uneven to contain a small amount of stone
Sand, it is plastic based on, wet, dry strength and toughness are medium, and tangent plane slightly gloss, shake is reactionless.This prospecting except ZK5, ZK8,
ZK10 is not met outside the layer, and the layer is met in remaining each drilling, 0.4 ~ 0.8m of its buried depth of top surface, equivalent to 2.77 ~ 4.22m of absolute altitude,
0.7 ~ 1.9m of thickness.
（3）4th is sea-land interbedding facies sedimentary（Qmc）
Mud：It is dark-grey, grey black, somewhat stink, saturation, liquid-plastic state, containing a small amount of humus and organic matter, it is uneven contain 5~
10% medium coarse sand.Gloss reaction is glossy, and shake is reactionless, and dry strength and toughness are medium.Each drilling of this prospecting meets this
Layer, 1.5 ~ 2.5m of its buried depth of top surface, equivalent to 1.76 ~ 2.34m of absolute altitude, 6.3 ~ 16.8m of thickness.
Silty clay：Lark, it is uneven to contain a small amount of quartz sand, plastic ~ hard plastic state, saturation, gloss reaction slightly light
Pool, shake is reactionless, and dry strength and toughness are medium.The layer is met in each drilling of this prospecting, 8.5 ~ 19.5m of its buried depth of top surface,
Equivalent to absolute altitude -15.24 ~ -4.35m, 0.8 ~ 10.4m of thickness.
Middle sand：Isabelline, taupe, it is uneven contain 10 ~ 25% cohesive soil, the Main Ingredients and Appearance of sand is quartz, very wet~full
With slightly close state.This prospecting only drilling ZK8, ZK9 meets the layer, 18.1 ~ 22.8m of its buried depth of top surface, equivalent to absolute altitude-
19.23 ~ -13.84m, 1.4 ~ 3.4m of thickness.
2nd, designing technique standard
（1）Ground top layer characteristic load bearing capacity is not less than 80kPa；
（2）Handle soil layer and depth：Emphasis process object is mud, basement process mean depth 15m or so；
（3）Soil body modulus of compressibility average value is not less than 5MPa in processing depth bounds.
Step 1: according to the main physical and mechanical preperties indicator-specific statistics and design technical standard of soil layer, during the ground is surveyed
Layer of sand characteristic load bearing capacity fak >=180 (kPa).Accordingly, determine that precipitation well point is arranged as（Accompanying drawing three）；
1.1st, cluster type layering precipitation well point buried depth is silty clay soil layer, is forbidden to be inserted through middle layer of sand.
1.2nd, cluster type layering precipitation well point is layered as tetra- layers of 15m, 12m, 8m, 4m（Accompanying drawing four）.
1.3rd, cluster type layering precipitation well point arrangement grid is 4m × 4m, and centre is inserted a bit, arranged in blossom type.
1.4th, due to this engineering top layer 0.4m ~ 2.2m to plough soil, and periphery is without heavy construction, therefore using setting peripheral tube
Well, peripheral pipe well sets two rows, and spacing is 10m × 5m, and depth of burying is 15m, is inserted into middle layer of sand 0.2m.Its main function
It is influence of the peripheral water source of cut-off to construction area.
1.5th, after the completion of cluster type layering precipitation well point arrangement, you can by the same original for being layered as a vacuum-dewatering loop
Then, each layering precipitation well point is connected, is a construction cell by 10,000 squares, tetra- vacuum of 15m, 12m, 8m, 4m is set respectively
Precipitation loop, each vavuum pump connection well point control is at 80 ~ 100.
1.6th, peripheral tube well dewatering and internal layer cluster type layering precipitation well point is carried out simultaneously, is typically dropped in level of ground water
4 ~ 6m can carry out pipe and ram strengthening construction.
Step 2: no-arbitrary pricing pipe rams construction：
2.1st, pipe is rammed and layouted in the middle of two well points, and arrangement grid is 4m × 4m, and centre is inserted a bit, arranged in blossom type（It is attached
Figure five）.
2.2nd, tip alignment tamping point position, it is in closed form to note tip, opens vibration hammer, is ploughed through top layer 0.4m ~ 2.2m
After soil layer, vibration hammer is not turned on as far as possible, using the backpressure device of vibratory pile drive and extractor, rammer pipe is reached silty clay layer（Press
Position under not）, must not note and punch middle layer of sand（Accompanying drawing six）.
2.3rd, rammer pipe is lifted, drop pipe hammer ram makes tip touch silty clay layer soil 2 ~ 3 with hammer ram after opening and hit, then pulls out
Rise and ram 3 ~ 4m of pipe, drop pipe hammer ram, touch 2 ~ 3 is hit, so often pull up rammer 3 ~ 4m of pipe, i.e., hit with hammer ram touch 2 ~ 3, until ramming pipe
Extract behind ground, then hit with hammer ram touch 2 ~ 3, you can the pipe for completing the tamping point rams construction（Accompanying drawing seven）.
2.4th, follow-up tamping point construction is with 2.3, during pipe is rammed, it is ensured that cluster type is layered the normal precipitation of precipitation well point.
The extrusion drainage produced to the soil body and ram ram disturbance of the pipe lifting process to the soil body using ramming pipe and burying and make soil
Substantial amounts of super Jing Kongxiyalishui is produced in vivo and is discharged into cluster type layering precipitation well point, and the soil body is drained out by vavuum pump, because
This can be used for Design of Foundation cluster type to be layered precipitation well point, have positive effect to the improvement of inter-pile soil physico-mechanical properties,
Soil moisture content is reduced after processing, and void ratio is reduced, internal friction angle increase, and this is to be sucked by vacuum precipitation, vibration sinking tube laterally to squeeze
The coefficient results of number of mechanisms such as close and filling displacement.
Step 3: shallow layer reinforcement is handled after pipe is rammed
3.1st, rammed through pipe after reinforcing, according to design index request, such as bearing eigenvalue of foundation soil（fak）>=80KPa, then
Batch vacuum precipitation is can proceed with, during to super quiet pore pressure dissipation to more than 90%, into the smooth tamping pit of bull-dozer, is used
The method of full rammer or vibroroller cmpacting, carries out i.e. referable detection after shallow-layer processing.
3.2nd, such as design bearing eigenvalue of foundation soil（fak）During >=100KPa, it can be rammed according to field condition, such as pipe
After can meet bull-dozer, tamping machine enter, then can be bulldozed into bull-dozer after tamping pit, carry out strong rammer equipment, carry out put a rammer, do not breaking
Under conditions of bad layering well-points dewatering, tamping point is arranged on pipe tamping point, and every 2 ~ 4 is hit（Note keeping vacuum-dewatering）；Such as
Place can not meet bull-dozer, tamping machine and enter after pipe is rammed, then needs to keep vacuum-dewatering, up to super quiet pore pressure dissipation to 90%
During the above, into the smooth tamping pit of bull-dozer, carry out point and ram construction, under conditions of layering well-points dewatering is not destroyed, tamping point arrangement
On pipe tamping point, every 2 ~ 4 is hit（Note keeping vacuum-dewatering）.
3.3rd, after pipe rammer construction, continue to keep layering well-points dewatering when super quiet pore pressure dissipation is to more than 90%,
Last is carried out all over full rammer, third party's detection is delivered.
Claims (5)
1. a kind of soft foundation cluster type layering precipitation no-arbitrary pricing pipe rams system, it is characterised in that soft foundation cluster type layering drop
Water no-arbitrary pricing pipe, which rams system, includes multiple cluster types layering precipitation well point of array arrangement and for connecting multiple cluster types point
The branch pipe of layer precipitation well point, branch pipe connection house steward, house steward's connection vavuum pump, the cluster type layering precipitation well point includes a well
The multiple layering well points set in hole；Multiple layering well points are set by different thickness, and each layering well point is according to the thickness buried, together
One layering well point is primary Ioops, and branch pipe is connected by threeway with each layering well point of same thickness, and each vavuum pump connection is same
The layering well point of one thickness.
2. a kind of soft foundation cluster type layering precipitation no-arbitrary pricing pipe according to claim 1 rams system, it is characterised in that
The tubing that well point uses 32mm is layered, each layering well point lower end 500mm sets filter opening, and filter opening spacing is 250mm mono-, filter opening
Place's 1 ~ 2 layer of 100 mesh nylon leaching net of bag, and tightened with iron wire, it is layered well-point pipe bottom seal.
3. a kind of soft foundation cluster type layering precipitation no-arbitrary pricing pipe rams the construction method of system, it is characterised in that it includes following
Processing step：
Step 1: a kind of soft foundation cluster type layering precipitation no-arbitrary pricing pipe described in arrangement claim 1 rams system
When pipe rammer reinforcing is carried out to large-area soft foundation, first pass through arrangement soft foundation cluster type layering precipitation no-arbitrary pricing pipe and ram
System carries out vacuum-dewatering, using the squeezing action that pipe buries to soil body generation is rammed, makes the pipe tamping point periphery soil body most of freely
Water and cluster type layering precipitation well point is discharged into reference to water, is drawn water the nothing produced due to the limitation of vacuum so as to solve vacuum
Method carries out the defect of precipitation to deep layer；
Reinforced Step 2: no-arbitrary pricing pipe is rammed
Step 3: shallow layer reinforcement is handled after pipe is rammed.
4. a kind of soft foundation cluster type layering precipitation no-arbitrary pricing pipe according to claim 3 rams the construction method of system,
It is characterized in that Step 2: no-arbitrary pricing pipe rams concretely comprising the following steps in reinforcing：
Vibration hammer rams pipe by the formation of flange joint steel pipe, rams the tip that pipe lower end is provided with the retractable flap valve composition of multi-disc,
Main that rammer pipe is squeezed into required depth using vibration hammer, pipe hammer ram is lifted or whereabouts as needed in rammer pipe, following to ramming pipe
The soil body is rammed, and reaches the purpose of compacted compacting.
5. a kind of soft foundation cluster type layering precipitation no-arbitrary pricing pipe according to claim 3 rams the construction method of system,
It is characterized in that Step 3: concretely comprising the following steps during shallow layer reinforcement is handled after pipe rammer：
Rammed through pipe after reinforcing, index and different bearing eigenvalue of foundation soil are reinforced according to design（Fak) require, adopt
Take full rammer or vibroroller cmpacting or point to ram, carry out shallow-layer processing and i.e. referable and detect；
Rammed through pipe after reinforcing, according to design index request, such as design bearing eigenvalue of foundation soil（fak）≥
80KPa, then can proceed with batch vacuum precipitation, during to super quiet pore pressure dissipation to more than 90%, be rammed into bull-dozer is smooth
Hole, using the method for full rammer or vibroroller cmpacting, carries out i.e. referable detection after shallow-layer processing；
Such as design bearing eigenvalue of foundation soil（fak）During >=100KPa, it can be carried out selecting following work according to field condition
Industry step：
Such as pipe can meet bull-dozer, tamping machine and enter after ramming, then can be bulldozed into bull-dozer after tamping pit, carry out strong rammer equipment, carry out
Point is rammed, and under conditions of layering well-points dewatering is not destroyed, tamping point is arranged on pipe tamping point；
Place can not meet bull-dozer, tamping machine and enter after such as pipe is rammed, then needs to keep batch vacuum precipitation, until super quiet pore pressure
When being dissipated to more than 90%, into the smooth tamping pit of bull-dozer, carry out point and ram construction, under conditions of layering well-points dewatering is not destroyed,
Tamping point is arranged on pipe tamping point, and every 2 ~ 4 is hit；
After a rammer construction, continue to keep batch vacuum precipitation until when super quiet pore pressure dissipation is to more than 90%, progress is last
A time full rammer, delivers third party's detection.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107808228A (en) * | 2017-09-27 | 2018-03-16 | 上海岩土工程勘察设计研究院有限公司 | A kind of groundwater extraction efficiency evaluation method of hypotonicity soil layer |
| CN110004908A (en) * | 2019-03-28 | 2019-07-12 | 河海大学 | A kind of deep layer rams pipe and its construction method |
| CN110438973A (en) * | 2019-06-27 | 2019-11-12 | 福建鼎拓工程勘察设计有限公司 | A kind of reinforcement means of soft foundation |
| CN111827247A (en) * | 2019-04-15 | 2020-10-27 | 江苏澄工科技有限公司 | Method for reinforcing soft foundation |
| CN113550292A (en) * | 2020-04-23 | 2021-10-26 | 江苏中田地基工程有限公司 | Foundation drainage method and system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002143828A (en) * | 2000-11-09 | 2002-05-21 | Ichinomiya Kimitake | Countermeasure method for cleaning of soil and soil cleaning system |
| CN1818227A (en) * | 2006-03-07 | 2006-08-16 | 张志铁 | Combined method for fastening soft soil ground by dual vacuum prepressing and dynamic extruding method |
| CN1932165A (en) * | 2006-09-01 | 2007-03-21 | 叶凝雯 | Large area soft ground treatment separated layer and time electroosmotic precipitation union vacuum precipitation method |
| CN101008177A (en) * | 2006-11-23 | 2007-08-01 | 江西基业科技有限公司 | Gradation solidification and compacting method for groundsill |
| CN101736735A (en) * | 2009-12-22 | 2010-06-16 | 叶吉 | Composite reinforcing method for combining soft foundation light well point pipe with plastic drainage plate |
| CN102518115A (en) * | 2011-12-22 | 2012-06-27 | 中铁第四勘察设计院集团有限公司 | Method for reinforcing soft soil foundation of large-area storage yard |
| CN103122631A (en) * | 2013-02-01 | 2013-05-29 | 叶吉 | Soft soil foundation preloading stamping reinforcement method |
| CN106013042A (en) * | 2016-06-20 | 2016-10-12 | 叶吉 | Soft soil foundation reinforcing method and pipe ram for reinforcement |
| CN106049413A (en) * | 2016-08-02 | 2016-10-26 | 唐山工业职业技术学院 | Hybrid power drainage consolidation system applied to deep saturated soft soil foundation and construction method |
| CN207003459U (en) * | 2017-05-17 | 2018-02-13 | 福建岩土工程勘察研究院 | Soft foundation cluster type layering precipitation no-arbitrary pricing pipe rams system |
-
2017
- 2017-05-17 CN CN201710347707.3A patent/CN107100182A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002143828A (en) * | 2000-11-09 | 2002-05-21 | Ichinomiya Kimitake | Countermeasure method for cleaning of soil and soil cleaning system |
| CN1818227A (en) * | 2006-03-07 | 2006-08-16 | 张志铁 | Combined method for fastening soft soil ground by dual vacuum prepressing and dynamic extruding method |
| CN1932165A (en) * | 2006-09-01 | 2007-03-21 | 叶凝雯 | Large area soft ground treatment separated layer and time electroosmotic precipitation union vacuum precipitation method |
| CN101008177A (en) * | 2006-11-23 | 2007-08-01 | 江西基业科技有限公司 | Gradation solidification and compacting method for groundsill |
| CN101736735A (en) * | 2009-12-22 | 2010-06-16 | 叶吉 | Composite reinforcing method for combining soft foundation light well point pipe with plastic drainage plate |
| CN102518115A (en) * | 2011-12-22 | 2012-06-27 | 中铁第四勘察设计院集团有限公司 | Method for reinforcing soft soil foundation of large-area storage yard |
| CN103122631A (en) * | 2013-02-01 | 2013-05-29 | 叶吉 | Soft soil foundation preloading stamping reinforcement method |
| CN106013042A (en) * | 2016-06-20 | 2016-10-12 | 叶吉 | Soft soil foundation reinforcing method and pipe ram for reinforcement |
| CN106049413A (en) * | 2016-08-02 | 2016-10-26 | 唐山工业职业技术学院 | Hybrid power drainage consolidation system applied to deep saturated soft soil foundation and construction method |
| CN207003459U (en) * | 2017-05-17 | 2018-02-13 | 福建岩土工程勘察研究院 | Soft foundation cluster type layering precipitation no-arbitrary pricing pipe rams system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107808228A (en) * | 2017-09-27 | 2018-03-16 | 上海岩土工程勘察设计研究院有限公司 | A kind of groundwater extraction efficiency evaluation method of hypotonicity soil layer |
| CN107808228B (en) * | 2017-09-27 | 2021-08-20 | 上海勘察设计研究院(集团)有限公司 | Groundwater extraction effectiveness evaluation method for low-permeability soil layer |
| CN110004908A (en) * | 2019-03-28 | 2019-07-12 | 河海大学 | A kind of deep layer rams pipe and its construction method |
| CN110004908B (en) * | 2019-03-28 | 2024-04-02 | 河海大学 | Deep ramming pipe and construction method thereof |
| CN111827247A (en) * | 2019-04-15 | 2020-10-27 | 江苏澄工科技有限公司 | Method for reinforcing soft foundation |
| CN110438973A (en) * | 2019-06-27 | 2019-11-12 | 福建鼎拓工程勘察设计有限公司 | A kind of reinforcement means of soft foundation |
| CN113550292A (en) * | 2020-04-23 | 2021-10-26 | 江苏中田地基工程有限公司 | Foundation drainage method and system |
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