CN109736290A - A kind of construction method of soft foundation - Google Patents
A kind of construction method of soft foundation Download PDFInfo
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- CN109736290A CN109736290A CN201811551072.XA CN201811551072A CN109736290A CN 109736290 A CN109736290 A CN 109736290A CN 201811551072 A CN201811551072 A CN 201811551072A CN 109736290 A CN109736290 A CN 109736290A
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- soft foundation
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Abstract
A kind of construction method of soft foundation of the present invention, comprising the following steps: step 1, Job readiness: construction area a, delimited, is cleared up and is flattened using ground of the bull-dozer to construction area；B, roadbed slot is excavated on ground, paving spills sandstone in roadbed slot, as working cushion layer；Step 2, construction working: a, start piling machine, be implanted into tubular pole on the ground after leveling；B, granular materials is put into tubular pole；C, tubular pole is extracted, collecting channel is formed；D, there is the ground in ponding channel to carry out round-trip static pressure above-mentioned steps using road roller；E, it is inserted into pumping conduit in collecting channel, the underground water collected in collecting channel after static pressure is discharged；F, it backfills collecting channel and carries out secondary leveling.The characteristics of present invention has construction cost low, short construction period.
Description
Technical field
The present invention relates to soft soil foundation construction field more particularly to a kind of construction method of soft foundation.
Background technique
Ground is the soil body or rock mass of supporting base below building, when carrying out foundation engineering construction, is often encountered
The excessively soft ground of soil property.Currently, conventional soft-soil foundation treatment method has several shock ramming methods, discharging consolidation
Method and without draining vacuum method.
Shock ramming method is sling the hammer ram (20-30 tons) of larger quality using lifting appliance, is promoted to tens of meters of height,
It allows hammer ram that road is freely descended to ram ground again, changes graphic layer structure with impact energy, a certain range of soil body aqueous vapor is discharged, by force
Degree improves, and applies in general to the grounds such as processing sandy soil, the clay of low saturation and collapsible loess, the silt for rich groundwater
Dirt bed is then not suitable for, because quickly underground water cannot be discharged when processing, spongy soil easy to form, increases processing difficulty.
Draining concretion method keeps the pore water in soil slow by arranging vertical drain well (sand drain or plastic row water bag etc.)
Slow discharge, hole become smaller, and consolidation deformation occurs for ground, and the intensity of foundation soil gradually increases, and apply in general to processing saturation soil layer,
The peat soil layer poor for permeability then needs cautiously to use.
Without draining vacuum method, it is laid with sand bedding course on argillic horizon, diaphragm seal sand bedding course is then used, with vacuum pump to sand
Pad and sand drain are evacuated, and level of ground water is reduced, while accelerating ground consolidation under level of ground water effect, and the method is only applicable in
In the processing of soft clay, the sandy soils treatment effect for bearing capacity greater than 75KPa is substantially reduced.
To sum up, existing soft-soil foundation treatment method has various deficiencies.
Summary of the invention
In view of this, the present invention provides a kind of weak soil in order to solve the problems, such as that existing soft-soil foundation treatment method is insufficient
Foundation construction method.
The technical scheme of the present invention is realized as follows:
A kind of construction method of soft foundation, comprising the following steps:
Step 1, Job readiness:
A, construction area delimited, is cleared up and is flattened using ground of the bull-dozer to the construction area；
B, roadbed slot is excavated on the ground, paving spills sandstone in roadbed slot, as working cushion layer；
Step 2, construction working:
A, start piling machine, be implanted into tubular pole on the ground after leveling；
B, granular materials is put into Xiang Suoshu tubular pole；
C, the tubular pole is extracted, collecting channel is formed；
D, there is the ground in the ponding channel to carry out round-trip static pressure above-mentioned steps using road roller；
E, it is inserted into pumping conduit in the collecting channel, the underground water collected in the collecting channel after static pressure is discharged；
F, it backfills collecting channel and carries out secondary leveling.
Preferably, in the step 2a, the piling machine moves on the working cushion layer.
Preferably, in the step 2a, counter-force dowel is nearby arranged in the tubular pole.
Preferably, when step 1 Job readiness starts, monitoring device is installed in the construction area, to constructing
Information-aided construction control is taken in journey.
Preferably, the tubular pole in the step 2a is far from the working cushion layer.
Preferably, granular materials is cinder, sandstone or gravel in the step 2b.
Preferably, round-trip static pressure number is carried out in the step 2d to be no less than 5 times, every minor tick is greater than 12h.
Preferably, the collecting channel is filled using backfill in the step 2f.
Preferably, the quick lime of 30% volume ratio is added in the backfill.
The utility model has the advantages that
Roadbed slot is arranged in construction area first in the present invention, and mechanical secondary damage soft soil foundation will not be generated in construction, causes to apply
Work is inconvenient, and excavates collecting channel in the construction process, repeatedly static pressure, backfills after extracting ponding, to Soft Soil Consolidation, tool
There is the characteristics of construction cost is low, short construction period.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1
A kind of construction method of soft foundation, comprising the following steps:
Step 1, Job readiness:
A, construction area delimited, is cleared up and is flattened using ground of the bull-dozer to construction area；
B, roadbed slot is excavated on ground, paving spills sandstone in roadbed slot, as working cushion layer；
Step 2, construction working:
A, start piling machine, be implanted into tubular pole on the ground after leveling；Counter-force dowel is nearby arranged in tubular pole, plays reinforcement effect.
B, cinder, sandstone or gravel are put into tubular pole；
C, tubular pole is extracted, collecting channel is formed；
D, there is the ground in ponding channel to carry out round-trip static pressure, specific static pressure 7 times, every minor tick above-mentioned steps using road roller
15h；
E, it is inserted into pumping conduit in collecting channel, the underground water collected in collecting channel after static pressure is discharged；
F, it backfills collecting channel and carries out secondary leveling, using backfill earthen backfill, the life that volume ratio is 30% is added in backfill
Lime.
In step 2a, piling machine moves on working cushion layer.
When step 1 Job readiness starts, monitoring device is installed in construction area, to taking informationization to apply in work progress
Industry control system.
Tubular pole in step 2a is far from working cushion layer.
Embodiment 2
A kind of construction method of soft foundation, comprising the following steps:
Step 1, Job readiness:
A, construction area delimited, is cleared up and is flattened using ground of the bull-dozer to construction area；
B, roadbed slot is excavated on ground, paving spills sandstone in roadbed slot, as working cushion layer；
Step 2, construction working:
A, start piling machine, be implanted into tubular pole on the ground after leveling；Counter-force dowel is nearby arranged in tubular pole, plays reinforcement effect.
B, cinder, sandstone or gravel are put into tubular pole；
C, tubular pole is extracted, collecting channel is formed；
D, there is the ground in ponding channel to carry out round-trip static pressure, specific static pressure 10 times, between each above-mentioned steps using road roller
Every 12h；
E, it is inserted into pumping conduit in collecting channel, the underground water collected in collecting channel after static pressure is discharged；
F, it backfills collecting channel and carries out secondary leveling, using backfill earthen backfill, the life that volume ratio is 30% is added in backfill
Lime.
In step 2a, piling machine moves on working cushion layer.
When step 1 Job readiness starts, monitoring device is installed in construction area, to taking informationization to apply in work progress
Industry control system.
Tubular pole in step 2a is far from working cushion layer.
Soft soil foundation considerably increases construction in later period efficiency, construction quality is also greatly improved after construction.
Finally, it should be noted that the foregoing is merely a prefered embodiment of the invention, it is merely to illustrate technical side of the invention
Case is not intended to limit the scope of the present invention.It is any modification for being made all within the spirits and principles of the present invention, equivalent
Replacement, improvement etc., are included within the scope of protection of the present invention.
Claims (9)
1. a kind of construction method of soft foundation, which comprises the following steps:
Step 1, Job readiness:
A, construction area delimited, is cleared up and is flattened using ground of the bull-dozer to the construction area；
B, roadbed slot is excavated on the ground, paving spills sandstone in roadbed slot, as working cushion layer；
Step 2, construction working:
A, start piling machine, be implanted into tubular pole on the ground after leveling；
B, granular materials is put into Xiang Suoshu tubular pole；
C, the tubular pole is extracted, collecting channel is formed；
D, there is the ground in the ponding channel to carry out round-trip static pressure above-mentioned steps using road roller；
E, it is inserted into pumping conduit in the collecting channel, the underground water collected in the collecting channel after static pressure is discharged；
F, it backfills collecting channel and carries out secondary leveling.
2. construction method of soft foundation as described in claim 1, which is characterized in that in the step 2a, the piling machine exists
It is moved on the working cushion layer.
3. construction method of soft foundation as described in claim 1, which is characterized in that in the step 2a, near the tubular pole
Counter-force dowel is set.
4. construction method of soft foundation as described in claim 1, which is characterized in that when step 1 Job readiness starts,
Monitoring device is installed in the construction area, to taking information-aided construction control in work progress.
5. construction method of soft foundation as described in claim 1, which is characterized in that the tubular pole in the step 2a is separate
The working cushion layer.
6. construction method of soft foundation as described in claim 1, which is characterized in that granular materials is coal in the step 2b
Slag, sandstone or gravel.
7. construction method of soft foundation as described in claim 1, which is characterized in that carry out round-trip static pressure in the step 2d
Number no less than 5 times, every minor tick is greater than 12h.
8. construction method of soft foundation as described in claim 1, which is characterized in that use backfill by institute in the step 2f
State collecting channel filling.
9. construction method of soft foundation as claimed in claim 8, which is characterized in that add 30% volume ratio in the backfill
Quick lime.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811551072.XA CN109736290A (en) | 2018-12-18 | 2018-12-18 | A kind of construction method of soft foundation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811551072.XA CN109736290A (en) | 2018-12-18 | 2018-12-18 | A kind of construction method of soft foundation |
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| CN109736290A true CN109736290A (en) | 2019-05-10 |
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| CN201811551072.XA Pending CN109736290A (en) | 2018-12-18 | 2018-12-18 | A kind of construction method of soft foundation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055845A (en) * | 2019-05-15 | 2019-07-26 | 浙江沧海建设有限公司 | A kind of construction method that highway bridge and culvert two sides are soft soil roadbed |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460865A (en) * | 2016-06-02 | 2017-12-12 | 宜兴市周铁镇生力钻探机械厂 | A kind of construction method of soft foundation |
-
2018
- 2018-12-18 CN CN201811551072.XA patent/CN109736290A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460865A (en) * | 2016-06-02 | 2017-12-12 | 宜兴市周铁镇生力钻探机械厂 | A kind of construction method of soft foundation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055845A (en) * | 2019-05-15 | 2019-07-26 | 浙江沧海建设有限公司 | A kind of construction method that highway bridge and culvert two sides are soft soil roadbed |
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Application publication date: 20190510 |
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| RJ01 | Rejection of invention patent application after publication |