CN109487777A - A method of a reinforcing deep soft soil foundation of filling the span of a man's arms is formed using slip casing by pressure - Google Patents
A method of a reinforcing deep soft soil foundation of filling the span of a man's arms is formed using slip casing by pressure Download PDFInfo
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- CN109487777A CN109487777A CN201811336867.9A CN201811336867A CN109487777A CN 109487777 A CN109487777 A CN 109487777A CN 201811336867 A CN201811336867 A CN 201811336867A CN 109487777 A CN109487777 A CN 109487777A
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- 238000000034 method Methods 0.000 title abstract description 38
- 239000002689 soil Substances 0.000 title abstract description 35
- 230000003014 reinforcing effect Effects 0.000 title abstract description 16
- 238000007569 slipcasting Methods 0.000 abstract description 46
- 238000010276 construction Methods 0.000 abstract description 28
- 230000006641 stabilisation Effects 0.000 abstract description 20
- 238000011105 stabilization Methods 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 11
- 239000011440 grout Substances 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000002787 reinforcement Effects 0.000 abstract description 5
- 239000011083 cement mortar Substances 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 description 14
- 238000005553 drilling Methods 0.000 description 12
- 230000001360 synchronised effect Effects 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 238000002627 tracheal intubation Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000007596 consolidation process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Piles And Underground Anchors (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A method of a reinforcing deep soft soil foundation of filling the span of a man's arms is formed using slip casing by pressure, it is related to structure foundation reinforcement means, when solving general foundation reinforcement method processing deep soft soil foundation, single pile slenderness ratio is inadequate, column rigidity is insufficient, it is difficult to the technical issues of reaching foundation stabilization effect.The present invention by multitube slip casting, floral tube slip casting, move back pipe Construction technology of Pouring cement mortar and combine, utilize the grout leaking principle of slip casing by pressure, using it is made, individually three hole equidistant between equidistant three hole, four holes or two rows, four holes form a timber pile of filling the span of a man's arms for slip casting, it is similar to " stake of filling the span of a man's arms " made of single pile is filled the span of a man's arms one by one and carries out slip casting, biggish stake diameter can be formed, increase column rigidity, while meeting the requirement of deep soft soil foundation pile body slenderness ratio, reaches the preferable effect of foundation stabilization.The present invention is used for the reinforcing of deep soft soil foundation, has column rigidity big, can meet the requirement of soft soil foundation pile body slenderness ratio, foundation stabilization effect is good, the high advantage of construction efficiency.
Description
Technical field
The invention belongs to structure foundation reinforcement means, and in particular to a kind of to fill the span of a man's arms stake reinforcing deeply using slip casing by pressure formation
The method of thick-soft base.
Background technique
China is vast in territory, and physical geographic environment is different, soil property is different, and foundation condition regionality is stronger.As economy is built
If development, not only to select to be engaged in construction in the good place of geology in advance, and also have to sometimes geological conditions not
Good place is built.With the development of the social economy, urban land growing tension.Depth is inevitably encountered in engineering construction
Layer filled up ground, deep layer backfill compaction, soil body saturated yielding situation is complicated and is difficult to handle.When building is due to ground weakness
Or when by water erosion, bearing capacity is unsatisfactory for requiring, foundation soil decrement increases, and differential settlement occurs for basis, seriously threatens
The safety of portion's structure and Equipment Foundations needs to implement to reinforce to structure foundation at this time.
General foundation reinforcement method needs heavy excavation, for precision instrument and equipment basis, just in operation workshop and has moved in
Civil construction ground cannot be handled using large area digging mode.When soft foundation is thicker, when supporting course is deeper, using single pile
It is not able to satisfy the requirement of pile body slenderness ratio, and pile body verticality is difficult to control, and directly affects foundation stabilization effect；When encountering foundation soil
When water content is larger, it is easy that a side is made to bear negative friction, it is difficult to have the function that foundation stabilization.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology, using the grout leaking principle of slip casing by pressure, provides one kind and adopts
A method for reinforcing deep soft soil foundation of filling the span of a man's arms is formed with slip casing by pressure, with solving general foundation reinforcement method processing Deep Thick Soft Ground
When base, single pile slenderness ratio is inadequate, and column rigidity is insufficient, it is difficult to the technical issues of reaching foundation stabilization effect.
The present invention is realized by following technical solution:
A method of a reinforcing deep soft soil foundation of filling the span of a man's arms being formed using slip casing by pressure, construction procedure is as follows:
(i) structure foundation situation is investigated:
The reason of finding out structure foundation Lack of support inquires construction information, determines structure, the type of foundation of building
And embedded depth of foundation；
(ii) ground Scheme of Strengthening is determined:
Drilling investigation is carried out to ground first, finds out in the hard layer depth of foundation soil, ground weakness situation and foundation soil and contains
Water situation determines the bearing capacity increased required for foundation stabilization according to the load of building, existing foundation bearing force value, from
And determination needs the indexs such as drilling depth, the spacing of wells, grouting amount；
(iii) foundation stabilization construction technique:
1. unwrapping wire determines between single equidistant three hole and two rows according to the design requirement of multiple single tube synchronized slip castings
Equidistant three hole forms equidistant between the bore position of the injected hole for stake of filling the span of a man's arms, or single equidistant four hole and two rows
Four holes form the bore position of the injected hole for stake of filling the span of a man's arms；
2. drilling, drilled using 75 hydraulic drill rig of TXV-, boring aperture 65mm；
3. intubation: wanting retaining hole unimpeded after drilling, play down tube immediately after bar, first next DN32 pipe, according to embedded depth of foundation
And ground situation, DN32 pipe are made into floral tube in 3~4 meters of embedded depth of foundation or less ranges, floral tube way: every 150mm arranges one layer
Slurry outlet, every layer is uniformly distributed the slurry outlet that 8 apertures are 6mm, finally next DN20 pipe, DN20 bottom of the tube in DN32 pipe
Floral tube is made within the scope of 3~4 meters；
4. sealing, aperture is obturaged according to dry cement is filled within the scope of 2~4 meters of ground in aperture；
5. slip casing by pressure, three equidistant holes or four equidistant hole synchronous groutings when slip casing by pressure, and using moving back
It is injected in batches when pipe slip casting method, i.e. every hole slip casting, when injection 25%, it is primary to move back pipe, continue injection 25%, then to move back pipe primary,
And so on, until slip casting is completed, using the grout leaking principle of slip casing by pressure, make it individually between equidistant three hole or two rows etc.
Three hole grout leakings of distance are cross-linked, and form a stake of filling the span of a man's arms, and are made equidistant between its single equidistant four hole or two rows
Four hole grout leakings are cross-linked, and form a stake of filling the span of a man's arms；
In order to control additional settlement, using great-jump-forward slip casting: will fill the span of a man's arms stake number consecutively in order, such as 1 to No. 16 stake,
Using great-jump-forward slip casting, it may be assumed that first batch slip casting is 1.5.9.13 stake；Second lot slip casting is 3.7.11.15 stake；Third
Batch slip casting is 2.6.10.14 stake；4th batch slip casting is 4.8.12.16 stake, the first and second batch quantitative filling, slip casting
0.1~0.15Mpa of pressure, third and fourth batch are saturated slip casting, and grouting pressure is 0.3~0.5Mpa.
Further, the step is (iii) in the 1. unwrapping wire of foundation stabilization construction technique, single equidistant three hole and two
Equidistant three hole between row, equidistant is 1000~2000mm；It is equidistant between single equidistant four hole and two rows
From four holes, equidistant is 1000~2000mm.
Further, the step is (iii) in the 3. intubation of foundation stabilization construction technique, to prevent soil plug slurry outlet in hole,
The slurry outlet first uses high-intensitive rubber and plastic tape-stripping, and adhesive tape is pasted along DN32 length of tube direction.
Compared with prior art, the present invention having the following advantages and beneficial effects:
The present invention by multitube slip casting, floral tube slip casting, move back pipe Construction technology of Pouring cement mortar and combine, utilize the grout leaking of slip casing by pressure former
Reason, using it is made, individually three hole equidistant between equidistant three hole, four holes or two rows, four holes form a timber pile of filling the span of a man's arms,
It is similar to " stake of filling the span of a man's arms " made of single pile is filled the span of a man's arms one by one and carries out slip casting, biggish stake diameter can be formed, increase column rigidity, together
When meet deep soft soil foundation pile body slenderness ratio requirement, reached the preferable effect of foundation stabilization.
The present invention does not limit depth using slip casing by pressure technology, can directly drill to solid bed (supporting course), grouting amount note
To saturation, ground soft layer is completely eliminated, greatly improves foundation bearing capacity, meets wanting for existing building foundation bearing capacity
It asks.
The present invention is Purely mechanical construction, only needs a small amount of construction personnel's execute-in-place, substantially increases construction efficiency, compare
The methods of static pressed pile, artificial digging pile are saved manpower, are not limited by construction space, and do not influence to reinforce normally making for building
With.
The present invention is used for the reinforcing of deep soft soil foundation, can form " stake of filling the span of a man's arms ", has column rigidity big, can meet weak soil
The requirement of ground pile body slenderness ratio, foundation stabilization effect is good, the high advantage of construction efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that " stake of filling the span of a man's arms " is formed using two rows of equidistant three holes；
Fig. 2 is the structural schematic diagram that " stake of filling the span of a man's arms " is formed using two rows of equidistant four holes；
Fig. 3 is the pile-forming effect figure (longitudinal sectional drawing) of reinforcing deep soft soil foundation of the present invention；
Fig. 4 be three holes fill the span of a man's arms stake using great-jump-forward slip casting method control additional settlement grouting sequence schematic diagram；
Fig. 5 be four holes fill the span of a man's arms stake using great-jump-forward slip casting method control additional settlement grouting sequence schematic diagram.
Specific embodiment
Technical solution of the present invention progress is described clear and completely by embodiment below in conjunction with attached drawing.
Embodiment 1 (as shown in Fig. 1,3,4)
A method of a reinforcing deep soft soil foundation of filling the span of a man's arms being formed using slip casing by pressure, construction procedure is as follows:
(i) structure foundation situation is investigated:
The reason of finding out structure foundation Lack of support inquires construction information, determines structure, the type of foundation of building
And embedded depth of foundation；
(ii) ground Scheme of Strengthening is determined:
Drilling investigation is carried out to ground first, finds out in the hard layer depth of foundation soil, ground weakness situation and foundation soil and contains
Water situation determines the bearing capacity increased required for foundation stabilization according to the load of building, existing foundation bearing force value, from
And determination needs the indexs such as drilling depth, the spacing of wells, grouting amount；
(iii) foundation stabilization construction technique:
1. unwrapping wire determines between single equidistant three hole and two rows according to the design requirement of multiple single tube synchronized slip castings
Equidistant three hole forms the bore position (as shown in Figure 1) of the injected hole 1 for stake of filling the span of a man's arms；
2. drilling: it is drilled using 75 hydraulic drill rig of TXV-, boring aperture 65mm；
3. intubation: wanting retaining hole unimpeded after drilling, play down tube immediately after bar, first next DN32 pipe, 3 meters at embedded depth of foundation
It is made into floral tube (floral tube way: every 150mm arranges one layer of slurry outlet, and every layer is uniformly distributed 8, aperture 6mm), below to prevent
Soil plug slurry outlet in hole finally exists first with high-intensitive rubber and plastic tape-stripping slurry outlet (can wash open automatically when slip casing by pressure)
Next DN20 is managed in DN32 pipe, and floral tube (floral tube way: the every 150mm arrangement one of slurry outlet is made within the scope of 3 meters of DN20 bottom of the tube
Layer, every layer is uniformly distributed 8, aperture 6mm)；
4. sealing: aperture is tight by orifice closing according to filling dry cement within the scope of 2 meters of ground；
5. slip casing by pressure:
As shown in figure 3, the present invention is deep soft to being made of building foundation 2, blinding layer 3, soft layer 4, solid bed 5
Soil base, when carrying out slip casing by pressure consolidation process, 1 synchronous grouting of equidistant three injected holes, and using pipe slip casting method is moved back, i.e.,
It is injected in batches when every hole slip casting, when injection 25%, it is primary to move back pipe, continue injection 25%, then to move back pipe primary, and so on, directly
It is completed to slip casting；
After slip casting, each injected hole forms a single pile 6, single equidistant using the grout leaking principle of slip casing by pressure
Three injected holes 1 between three injected holes 1 or two rows, grout leaking is cross-linked, and just forms a larger diameter concrete stake
Body --- stake 7 of filling the span of a man's arms improves the bearing capacity of ground, that is, can reach the effect for reinforcing thicker soft foundation.
Technological deficiency existing for slip casing by pressure itself is " additional settlement ".During slip casting, what is had in slurries is a large amount of
Moisture attack foundation soil, and fracture grouting generates disturbance to original soil body, before grout cures, foundation soil decrement is larger,
Then sedimentation is generated.
The present invention uses following working measure, can effectively control additional settlement:
1, as shown in figure 4, preventing additional settlement using great-jump-forward slip casting method: stake is filled the span of a man's arms in order successively in three hole of first row
Number, such as 1 to No. 16 stake, using great-jump-forward slip casting, it may be assumed that first batch slip casting is 1.5.9.13 stake；Second lot slip casting
For 3.7.11.15 stake；Third batch slip casting is 2.6.10.14 stake；4th batch slip casting be 4.8.12.16 stake, first,
Two batch quantitative fillings, 0.1~0.15Mpa of grouting pressure, third and fourth batch be saturated slip casting, grouting pressure be 0.3~
0.5Mpa；
It fills the span of a man's arms stake for second row, carries out great-jump-forward slip casting by above-mentioned same procedure；
2, can also prevent additional settlement using interruption slip casting method: each injected hole cannot have been infused disposably, must infuse in batches
Slurry has been infused after first time second of certain interval of time note, general interval time is 4 hours, i.e., in last time slip casting initial set
Slip casting is carried out before, until slip casting is saturated, interval time need to be determined by field test；
3, reinforce settlement observation and prevent additional settlement: in work progress, following the progress of slip casting, using continuous continual
Larger sedimentation does not occur for settlement observation, control basis.
As shown in Figure 1, the step is (iii) in the 1. unwrapping wire of foundation stabilization construction technique, single equidistant three hole and
Equidistant three hole between two rows, equidistant is 1000mm.
Embodiment 2 (as shown in Fig. 1,3,4)
A method of a reinforcing deep soft soil foundation of filling the span of a man's arms being formed using slip casing by pressure, construction procedure is (i) to (iii) the same as implementation
Example 1；
The step is (iii) in the 1. unwrapping wire of foundation stabilization construction technique, between single equidistant three hole and two rows etc.
Three holes of distance, equidistant is 2000mm.
Embodiment 3 (as shown in Fig. 2,3,5)
A method of a reinforcing deep soft soil foundation of filling the span of a man's arms being formed using slip casing by pressure, construction procedure is as follows:
(i) structure foundation situation is investigated:
The reason of finding out structure foundation Lack of support inquires construction information, determines structure, the type of foundation of building
And embedded depth of foundation；
(ii) ground Scheme of Strengthening is determined:
Drilling investigation is carried out to ground first, finds out in the hard layer depth of foundation soil, ground weakness situation and foundation soil and contains
Water situation determines the bearing capacity increased required for foundation stabilization according to the load of building, existing foundation bearing force value, from
And determination needs the indexs such as drilling depth, the spacing of wells, grouting amount；
(iii) foundation stabilization construction technique:
1. unwrapping wire determines between single equidistant four hole and two rows according to the design requirement of multiple single tube synchronized slip castings
Equidistant four hole forms the bore position (as shown in Figure 2) of the injected hole 1 for stake of filling the span of a man's arms；
2. drilling: it is drilled using 75 hydraulic drill rig of TXV-, boring aperture 65mm；
3. intubation: wanting retaining hole unimpeded after drilling, play down tube immediately after bar, first next DN32 pipe, 4 meters at embedded depth of foundation
It is made into floral tube (floral tube way: the every 150mm of slurry outlet arranges one layer, and every layer is uniformly distributed 8, aperture 6mm), below to prevent
Soil plug slurry outlet in hole finally exists first with high-intensitive rubber and plastic tape-stripping slurry outlet (can wash open automatically when slip casing by pressure)
Next DN20 is managed in DN32 pipe, and floral tube (floral tube way: the every 150mm arrangement one of slurry outlet is made within the scope of 4 meters of DN20 bottom of the tube
Layer, every layer is uniformly distributed 8, aperture 6mm)；
4. sealing: aperture is tight by orifice closing according to filling dry cement within the scope of 4 meters of ground；
5. slip casing by pressure:
As shown in figure 3, the present invention is deep soft to being made of building foundation 2, blinding layer 3, soft layer 4, solid bed 5
Soil base, when carrying out slip casing by pressure consolidation process, 1 synchronous grouting of equidistant four injected holes, and using pipe slip casting method is moved back, i.e.,
It is injected in batches when every hole slip casting, when injection 25%, it is primary to move back pipe, continue injection 25%, then to move back pipe primary, and so on, directly
It is completed to slip casting；
After slip casting, each injected hole forms a single pile 6, single equidistant using the grout leaking principle of slip casing by pressure
Four injected holes 1 between four injected holes 1 or two rows, grout leaking is cross-linked, and just forms a larger diameter concrete stake
Body --- stake 7 of filling the span of a man's arms improves the bearing capacity of ground, that is, can reach the effect for reinforcing thicker soft foundation；
The step is (iii) in the 1. unwrapping wire of foundation stabilization construction technique, between single equidistant four hole and two rows etc.
Four holes of distance, equidistant is 1000mm.
Embodiment 4 (as shown in Fig. 2,3,5)
A method of a slip casing by pressure reinforcing deep soft soil foundation of filling the span of a man's arms, construction procedure is (i) to (iii) the same as embodiment 3；
The step is (iii) in the 1. unwrapping wire of foundation stabilization construction technique, between single equidistant four hole and two rows etc.
Four holes of distance, equidistant is 1500mm.
Engineering Projects
Yan'an reddening ditch affordable housing residential quarters 8#, 10#, 11#, 12#, 13#, 14#, 15#, 16#, 17#, 23#,
The building 27#, the cell ground are high excavation high roadbed region, and building lot is backfill, and depth is up to 33 meters.House is at the beginning
Differential settlement occurs, when wall crazing, after cell entrusts a company to do Φ 800mm artificial stake failure, and uses quiet
It is only heavy that piling technology is reinforced, and building body does not stop sinking, and after failing twice, is reinforced using the present invention.
The method that the present invention forms " stake of filling the span of a man's arms " using single tube synchronized slip casting reinforces the cell problem building foundation, more
Mend that single pile slenderness ratio is inadequate, the disadvantage of column rigidity deficiency.5 year, building body have still kept steady so far after the completion of reinforcing
Fixed, consolidation effect is fine.
The spirit or essence that the present invention can be implemented in a variety of forms without departing from invention, it should therefore be appreciated that above-mentioned reality
It applies example and is not limited to details above-mentioned, and should widely be explained in claim limited range, therefore fall into claim
Or the variation in its equivalent scope should be covered by the following claims.
Claims (3)
1. a kind of form a method for reinforcing deep soft soil foundation of filling the span of a man's arms using slip casing by pressure, it is characterised in that: described using pressure
It is as follows that power slip casting forms a construction procedure for reinforcing deep soft soil based method of filling the span of a man's arms:
(i) structure foundation situation is investigated:
The reason of finding out structure foundation Lack of support inquires construction information, determines structure, type of foundation and the base of building
Plinth buried depth；
(ii) ground Scheme of Strengthening is determined:
Drilling investigation is carried out to ground first, finds out the hard layer depth of foundation soil, water content in ground weakness situation and foundation soil
Situation determines the bearing capacity increased required for foundation stabilization, thus really according to the load of building, existing foundation bearing force value
Surely the indexs such as drilling depth, the spacing of wells, grouting amount are needed；
(iii) foundation stabilization construction technique:
1. unwrapping wire determines equidistant between single equidistant three hole and two rows according to the design requirement of multiple single tube synchronized slip castings
From three holes formed stake of filling the span of a man's arms injected hole bore position, or equidistant four hole between single equidistant four hole and two rows
Form the bore position of the injected hole for stake of filling the span of a man's arms；
2. drilling, drilled using 75 hydraulic drill rig of TXV-, boring aperture 65mm；
3. intubation: wanting retaining hole unimpeded after drilling, play down tube immediately after bar, first next DN32 pipe, according to embedded depth of foundation and ground
Base situation, DN32 pipe are made into floral tube in 3~4 meters of embedded depth of foundation or less ranges, floral tube way: every 150mm arranges one layer of pulp
Hole, every layer is uniformly distributed the slurry outlet that 8 apertures are 6mm, finally next DN20 pipe, DN20 bottom of the tube 3~4 in DN32 pipe
Floral tube is made into rice range；
4. sealing, aperture is obturaged according to dry cement is filled within the scope of 2~4 meters of ground in aperture；
5. slip casing by pressure, three equidistant holes or four equidistant hole synchronous groutings when slip casing by pressure, and using moving back pipe note
It is injected in batches when slurry processes, i.e. every hole slip casting, when injection 25%, it is primary to move back pipe, continues injection 25%, then to move back pipe primary, successively
Analogize, until slip casting is completed, using the grout leaking principle of slip casing by pressure, makes equidistant between its single equidistant three hole or two rows
Three hole grout leakings be cross-linked, form a stake of filling the span of a man's arms, make equidistant four hole between its single equidistant four hole or two rows
Grout leaking is cross-linked, and forms a stake of filling the span of a man's arms；
In order to control additional settlement, using great-jump-forward slip casting: will fill the span of a man's arms stake number consecutively in order, such as 1 to No. 16 stake, use
Great-jump-forward slip casting, it may be assumed that first batch slip casting is 1.5.9.13 stake；Second lot slip casting is 3.7.11.15 stake；Third batch
Slip casting is 2.6.10.14 stake；4th batch slip casting is 4.8.12.16 stake, the first and second batch quantitative filling, grouting pressure
0.1~0.15Mpa, third and fourth batch are saturated slip casting, and grouting pressure is 0.3~0.5Mpa.
2. it is according to claim 1 it is a kind of filled the span of a man's arms a method for reinforcing deep soft soil foundation using slip casing by pressure formation,
Be characterized in that: the step is (iii) in the 1. unwrapping wire of foundation stabilization construction technique, between single equidistant three hole or two rows
Equidistant three hole, equidistant is 1000~2000mm；Equidistant four between single equidistant four hole or two rows
Hole, equidistant is 1000~2000mm.
3. it is according to claim 1 it is a kind of filled the span of a man's arms a method for reinforcing deep soft soil foundation using slip casing by pressure formation,
Be characterized in that: the step is (iii) in the 3. intubation of foundation stabilization construction technique, to prevent soil plug slurry outlet in hole, it is described go out
Kong Xianyong high intensity rubber and plastic tape-stripping is starched, adhesive tape is pasted along DN32 length of tube direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811336867.9A CN109487777B (en) | 2018-11-12 | 2018-11-12 | Method for reinforcing deep soft soil foundation by adopting pressure grouting to form combined anchor pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811336867.9A CN109487777B (en) | 2018-11-12 | 2018-11-12 | Method for reinforcing deep soft soil foundation by adopting pressure grouting to form combined anchor pile |
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| CN109487777A true CN109487777A (en) | 2019-03-19 |
| CN109487777B CN109487777B (en) | 2020-06-23 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110306538A (en) * | 2019-06-19 | 2019-10-08 | 河南省工建集团有限责任公司 | A kind of CFG stake and construction method for tower crane soft foundation |
| CN110306586A (en) * | 2019-07-10 | 2019-10-08 | 上海建为历保科技股份有限公司 | A kind of foundation reinforcement method for traditional architecture |
| CN110439022A (en) * | 2019-08-22 | 2019-11-12 | 上海勘测设计研究院有限公司 | Marine single-pile foundation with compacting grouting and reinforcing ground |
| CN112942309A (en) * | 2021-02-03 | 2021-06-11 | 山西晋建加固特种建筑工程有限公司 | Grid type grouting reinforcement construction method for independent pile foundation |
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| JP2000045262A (en) * | 1998-07-28 | 2000-02-15 | Toyo Constr Co Ltd | High pressure injection stirring construction method |
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| CN110306538A (en) * | 2019-06-19 | 2019-10-08 | 河南省工建集团有限责任公司 | A kind of CFG stake and construction method for tower crane soft foundation |
| CN110306538B (en) * | 2019-06-19 | 2020-11-06 | 河南省工建集团有限责任公司 | CFG pile for tower crane soft foundation and construction method |
| CN110306586A (en) * | 2019-07-10 | 2019-10-08 | 上海建为历保科技股份有限公司 | A kind of foundation reinforcement method for traditional architecture |
| WO2021004007A1 (en) * | 2019-07-10 | 2021-01-14 | 上海建为历保科技股份有限公司 | Foundation reinforcement method for conventional building |
| CN110439022A (en) * | 2019-08-22 | 2019-11-12 | 上海勘测设计研究院有限公司 | Marine single-pile foundation with compacting grouting and reinforcing ground |
| CN112942309A (en) * | 2021-02-03 | 2021-06-11 | 山西晋建加固特种建筑工程有限公司 | Grid type grouting reinforcement construction method for independent pile foundation |
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