CN101050629A - Constructing method for cement, flyash and crushed stone pile - Google Patents
Constructing method for cement, flyash and crushed stone pile Download PDFInfo
- Publication number
- CN101050629A CN101050629A CN 200710049015 CN200710049015A CN101050629A CN 101050629 A CN101050629 A CN 101050629A CN 200710049015 CN200710049015 CN 200710049015 CN 200710049015 A CN200710049015 A CN 200710049015A CN 101050629 A CN101050629 A CN 101050629A
- Authority
- CN
- China
- Prior art keywords
- pile
- cfg
- stake
- rig
- job practices
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The present invention discloses a construction method of cement fly-ash crushed stone pile, belonging to the field of cement fly-ash crushed stone pile construction technology. Said construction method includes the following steps: leveling of ground, compacting, defining point of pile position, after the pile hole is drilled, uniformly drawing out pipe to pile top, and detecting finished pile, its pile position deviation must be less than or equal to 5 cm.
Description
Technical field
The present invention relates to a kind of job practices of CFG.
Background technology
In the construction of existing CFG, all be that rig is directly at Ground Operation, because the deadweight of rig itself is bigger, and work engineering in the bit force inequality, cause rig to tilt, thereby make pile position deviation very big, can not meet design requirement.
Summary of the invention
In order to overcome the deficiencies in the prior art, the objective of the invention is to: the job practices that the high CFG of a kind of pile qualification rate is provided.
Technical scheme of the present invention is: a kind of job practices of CFG comprises the steps:
The first step: levelling of the land, compacting, and satisfy coefficient of consolidation K 〉=0.9;
Second step: layouted in position, stake position;
The 3rd step: rig places on the place of above-mentioned compacting, the helical form drilling rod of rig is aimed at the above-mentioned pore-forming of layouting to design elevation, stop to creep into, the compound that mixes and stirs by the concrete pump pumping, beginning at the uniform velocity tube drawing to stake after drilling rod core pipe is full of compound pushes up, and the promotion speed of the stroke of concrete pump and drill bit is complementary, the high design elevation 50cm that surpasses of stake top mark;
The 4th step: pile is detected, satisfy pile position deviation≤5cm.
The CFG that the present invention is alleged abbreviates the CFG stake as on engineering.
In existing C FG pile driving construction, all be directly rig to be placed on the ground to start working, because the deadweight of rig and pierce external force effect in the process itself, rig is easy to or depression, causes CFG pile pile position deviation very big, makes that CFG stake qualification rate is very low, underproof CFG stake will be poured into again, so not only waste raw material in a large number, also wasted a lot of man-hours, had a strong impact on the progress in man-hour.Given this, the present invention passes through test and detection many times, reaches a conclusion: satisfy coefficient of consolidation K 〉=0.9 in place, rig can not produce fuselage inclination and depression in construction operation, make CFG stake qualification rate improve greatly.
Of the present invention layouting generally can adopt grid type to layout.Be convenient to control each position in length and breadth to the position.
The raw materials such as cement, flyash, rubble and Admixture that compound of the present invention is prior art mix and stir according to the proportioning of design and form.
The promotion speed of the stroke of concrete pump of the present invention and the drill bit pump output that refers to concrete pump that is complementary will be complementary with the compound of the promotion pile of drill bit, and this is the control to the input of compound, can not instead insert in the tube drawing process.
The present invention described CFG detect qualified after, and after treating an initial set, the stake toplap is gone out design elevation partly clips, and leave the surplus of 10～20cm, this method can not cause damage to pile body.Available technology adopting be to cut piling method firmly, promptly be that the part that will exceed design elevation is clipped after treating that pile body hardens fully, not only workload is very big, causes the secondary waste, and makes that easily pile body cracks, thereby have a strong impact on the performance of pile body, even scrap.
The present invention removes described 10～20cm surplus cutter before described CFG cast pile cover again, makes CFG meet design requirement.
The invention has the beneficial effects as follows: because rig is arranged on the place of compacting, body can run-off the straight in work progress for rig, has improved the qualification rate of CFG greatly; Owing to the good control that pile body feeds intake, effectively avoided the generation of broken pile, also saved raw material.
The specific embodiment
Embodiment 1:
A kind of job practices of CFG comprises the steps:
The first step: levelling of the land, compacting, and satisfy coefficient of consolidation K 〉=0.9;
Second step: layouted in position, stake position;
The 3rd step: rig places on the place of above-mentioned compacting, the helical form drilling rod of rig is aimed at the above-mentioned pore-forming of layouting to design elevation, stop to creep into, the compound that mixes and stirs by the concrete pump pumping, beginning at the uniform velocity tube drawing to stake after drilling rod core pipe is full of compound pushes up, and the promotion speed of the stroke of concrete pump and drill bit is complementary, the high design elevation 50cm that surpasses of stake top mark; The raw materials such as cement, flyash, rubble and Admixture that described compound is prior art mix and stir according to the proportioning of design and form;
The 4th step: pile is detected, satisfy pile position deviation≤5cm;
The 5th step: cut stake, clip above the part of design elevation with detecting qualified CFG pile top.
Embodiment 2:
A kind of job practices of CFG comprises the steps:
The first step: levelling of the land, compacting, and satisfy coefficient of consolidation 〉=0.9;
Second step: layouted in position, stake position;
The 3rd step: rig places on the place of above-mentioned compacting, the helical form drilling rod of rig is aimed at the above-mentioned pore-forming of layouting to design elevation, stop to creep into, the compound that mixes and stirs by the concrete pump pumping, beginning at the uniform velocity tube drawing to stake after drilling rod core pipe is full of compound pushes up, and the promotion speed of the stroke of concrete pump and drill bit is complementary, the high design elevation 50cm that surpasses of stake top mark;
The 4th step: pile is detected, satisfy pile position deviation≤5cm;
The 5th step: after treating an initial set, the stake toplap is gone out design elevation partly clip, and leave the surplus of 10～20cm;
The 6th step: before described CFG cast pile cover, more described 10～20cm surplus cutter is gone, make CFG meet design requirement.
Claims (3)
1, a kind of job practices of CFG is characterized in that, comprises the steps:
The first step: levelling of the land, compacting, and satisfy coefficient of consolidation K 〉=0.9;
Second step: layouted in position, stake position;
The 3rd step: rig places on the place of above-mentioned compacting, the helical form drilling rod of rig is aimed at the above-mentioned pore-forming of layouting to the bearing stratum of designing requirement, stop to creep into, the compound that mixes and stirs by the concrete pump pumping, beginning at the uniform velocity tube drawing to stake after drilling rod core pipe is full of compound pushes up, and the promotion speed of the stroke of concrete pump and drill bit is complementary, the high design elevation 50cm that surpasses of stake top mark;
The 4th step: pile is detected, satisfy pile position deviation≤5cm.
2, the job practices of CFG according to claim 1 is characterized in that, need pass through at described pore-forming to designing requirement bearing stratum; After the CFG detection is qualified, and after treating an initial set, the stake toplap is gone out design elevation partly clip, and leave the surplus of 10～20cm.
3, the job practices of CFG according to claim 2 is characterized in that, before described CFG cast pile cover, more described 10～20cm surplus cutter is gone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710049015 CN101050629A (en) | 2007-04-30 | 2007-04-30 | Constructing method for cement, flyash and crushed stone pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710049015 CN101050629A (en) | 2007-04-30 | 2007-04-30 | Constructing method for cement, flyash and crushed stone pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101050629A true CN101050629A (en) | 2007-10-10 |
Family
ID=38782209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710049015 Pending CN101050629A (en) | 2007-04-30 | 2007-04-30 | Constructing method for cement, flyash and crushed stone pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101050629A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162245A (en) * | 2011-03-17 | 2011-08-24 | 中铁二局股份有限公司 | Construction method for reinforcing foundation of soft soil area |
| CN103590391A (en) * | 2013-11-27 | 2014-02-19 | 温州宏源水电建设有限公司 | Cement-fly-ash-gravel pile foundation reinforcing construction method |
| CN104762957A (en) * | 2015-04-22 | 2015-07-08 | 中冶成都勘察研究总院有限公司 | Construction method for spiral hole forming ram-expanded CFG pile |
-
2007
- 2007-04-30 CN CN 200710049015 patent/CN101050629A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162245A (en) * | 2011-03-17 | 2011-08-24 | 中铁二局股份有限公司 | Construction method for reinforcing foundation of soft soil area |
| CN103590391A (en) * | 2013-11-27 | 2014-02-19 | 温州宏源水电建设有限公司 | Cement-fly-ash-gravel pile foundation reinforcing construction method |
| CN103590391B (en) * | 2013-11-27 | 2016-05-25 | 温州宏源水电建设有限公司 | A kind of CFG foundation stabilization construction method |
| CN104762957A (en) * | 2015-04-22 | 2015-07-08 | 中冶成都勘察研究总院有限公司 | Construction method for spiral hole forming ram-expanded CFG pile |
| CN104762957B (en) * | 2015-04-22 | 2016-05-18 | 中冶成都勘察研究总院有限公司 | A kind of spiral pore-forming rams the construction method that expands CFG stake |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1193141C (en) | Combined grouting construction process of reinforcing foundation | |
| CN106368214B (en) | A kind of casing formula cement mixing method at pile operation method | |
| CN102011399B (en) | PHC pile-based multiple high jet pedestal pile construction method | |
| CN1944809A (en) | Three pipe double high pressure rotary jet sprouting reinforced construction method and its equipment | |
| CN1749490A (en) | Slurry filling and reinforcing floor foundation using high density less slurry less section content and its slurry filling method | |
| CN102912808A (en) | Spiral CFG pile and cement stirring pile combined composite foundation construction method | |
| CN1737269A (en) | Technique for spraying and stirring pile | |
| CN1760455A (en) | Method for treating collapsed road surface around inspection-pit for underground lines | |
| CN1274912C (en) | Pile forming operation method for bi-directional stirring piles | |
| CN1441124A (en) | High-pressure rotary spraying and core inserting process to form pedestal pile | |
| CN101050629A (en) | Constructing method for cement, flyash and crushed stone pile | |
| CN1837501A (en) | Grouted screw pile ,construction method therefor and grouting arrangement employing same | |
| CN100336982C (en) | Nail type cement soil stirring pile operation method | |
| CN1786351A (en) | Non taking soil drawing hole method for construction of sinking pile for prestressed pipe pile or prefabricated square pile | |
| CN1804230A (en) | Construction method employing threaded stirring shaft to decrease ambient foundation deformation | |
| CN102926382A (en) | Construction method of soil mixing wall (SMW) engineering method | |
| CN104005416A (en) | Method for processing major-diameter hole pile collapsed holes under high and steep slope plain fill back-pressing condition | |
| CN2753797Y (en) | Long-spiral pressure-poured concrete core-inserting combined pile | |
| CN1904226A (en) | Construction method of recoverable brad wall base pit enclosure | |
| CN206815410U (en) | A kind of experimental rig of indoor full automatic simulation cement mixing method | |
| CN1085280C (en) | Construction method for composite foundation by tamping expanding piles and compacting soil around piles | |
| CN1320214C (en) | Long spiral press pouring concrete lock pin combination pile and construction method thereof | |
| CN105507338A (en) | Campshed and inserted piled slab combined supporting water-plugging continuous wall forming construction method | |
| CN1598167A (en) | Original soil strengthen pile sinking method and its construction apparatus | |
| CN1869339A (en) | Construction method of precast pile non-precast pile sinking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |