CN104074184B - Pile base post-grouted expanded-base bored pile - Google Patents
Pile base post-grouted expanded-base bored pile Download PDFInfo
- Publication number
- CN104074184B CN104074184B CN201410211022.2A CN201410211022A CN104074184B CN 104074184 B CN104074184 B CN 104074184B CN 201410211022 A CN201410211022 A CN 201410211022A CN 104074184 B CN104074184 B CN 104074184B
- Authority
- CN
- China
- Prior art keywords
- stake
- pile
- base
- construction
- diameter
- 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.)
- Expired - Fee Related
Links
- 238000010276 construction Methods 0.000 claims abstract description 38
- 238000005553 drilling Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 25
- 230000002787 reinforcement Effects 0.000 claims abstract description 21
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 239000002002 slurry Substances 0.000 claims description 19
- 239000002689 soil Substances 0.000 claims description 19
- 239000008187 granular material Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011083 cement mortar Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 238000009411 base construction Methods 0.000 abstract 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 4
- 239000004568 cement Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a pile base post-grouted expanded-base bored pile. The pile base post-grouted expanded-base bored pile is characterized in that the expanded base is formed to be a basin-shaped base or an arc base, and a construction process for the expanded base is realized by a sheath tube, a grouting tube, a reinforcement cage, a rotary drilling rig, a special rotary drilling bucket and a crane; and the procedures are as follows: step 1, the rotary drilling pile hole construction of the rotary drilling rig; step 2, the expanded-base construction of the special rotary drilling bucket; step 3, the auxiliary construction of the crane; step 4, the post-grouting construction of the pile base. The pile base post-grouted expanded-base bored pile disclosed by the invention has the advantages that a bearing force value is greatly increased, a zero-discharge environment protection technology for mud is realized, and a standby rate during construction is zero, thus the construction efficiency is extremely high, and then the engineering cost is remarkably reduced.
Description
Technical field
The present invention relates to a kind of pile foundation of civil construction project, especially relate to a kind of rotary drilling rig of employing stake holes,
The rotary spading machine digging machine of base expanding and base expanding, put steel reinforcement cage and fill by the basin shape bottom base expanding and base expanding of the pile bottom post-grouting of construction flow process with the loop wheel machine filling concrete
Note stake.
Background technology
This expansion disclosed in Chinese invention patent zl200410037804.5 " a kind of club-footed pile and its construction method "
The bottom of bottom stake is flat-bottom structure, and the counter-force of foundation soil is uneven and be in arcs of recesses, and the foundation soil counter-force of dual side-edge is maximum, and
Middle foundation soil counter-force is minimum, and that is, the bottom of base expanding and base expanding part and straight flange point of intersection are that the soil layer of foundation soil counter-force maximum easily produces
The plastic hinge given birth to stress concentration and occur, with the increase of load, the plastic hinge of angle point also extends therewith in the middle of stake bottom, thus
The end resistance value of pile-end soil is made to reduce.
Also, the operational procedure of existing bottom-enlarging filling pile is pile job execution and being each attached to same stake position follow procedure and applies
Work, after that is, rotary drilling rig construction completes stake holes, must change shovel digging machine base expanding and base expanding, and after the completion of base expanding and base expanding, and palpus application stake machine or loop wheel machine exist
Hang in steel reinforcement cage in stake holes, hang in steel conduit and dismantle with installation, underwater concrete pouring, steel conduit, cement out slurry coat method recovery
Enter container etc. and be fully completed and must expend a large amount of man-hours, because only having a machine in stake holes in work, other is standby.
For example: the long 50m of stake of the bottom-enlarging filling pile in a diameter of 800 millimeters of stake footpaths, rotary drilling rig completes stake holes palpus 10 hours,
Rotary spading machine digging machine complete base expanding and base expanding must 2.5 hours, loop wheel machine complete steel reinforcement cage place, hang in steel conduit in stake holes and install, Underwater Concrete
Pour, steel conduit dismounting, cement out slurry coat method be recovered into that container etc. completes must 5 hours；All full negative for ensureing above-mentioned three machines
Lotus operates, and must configure four rotary drilling rigs, a rotary spading machine digging machine and two loop wheel machines, can eliminate holding state；So construction
Extremely inefficient, construction cost is high.
Content of the invention
The technical problem to be solved is to provide a kind of bearing capacity value higher and can improve efficiency of construction and fall
The pile bottom post-grouting bottom-enlarging filling pile of low engineering cost.
The technical scheme that present invention solution above-mentioned technical problem is adopted is: a kind of pile bottom post-grouting bottom-enlarging filling pile, its
It is characterised by, described stake bottom is set to basin shape bottom；The size at this basin shape bottom can be by the rotary bucket of change rotary spading machine digging machine
Shape is realized；The geomery of the bottom-enlarging filling pile at this basin shape bottom is d/d≤2.5, b/h=1/4～1/2；
For sand b/h=1/4, α=14 °；
For silt, cohesive soil b/h=1/3～1/2, α=18.5 °～27 °；
In formula, d is described stake bottom diameter；D is described stake diameter；
B is d-d/2；H is described stake bottom height；
α is the angle between described stake bottom diameter and described stake diameter；
Described stake bottom is it can also be provided that circular arc bottom.
The operational procedure of the present invention is: include protecting pipe, Grouting Pipe and steel reinforcement cage, and rotary drilling rig, special rotary digging shovel
Bucket, loop wheel machine；
Rotary drilling rig rotary digging pile hole construction described in the first step
1. the suitable for reading of stake holes in design stake position sinks to described sheath pipe, excavates dry ground using described rotary drilling rig, simultaneously
Inject slurry coat method in stake holes, this mud repeats and recycles, and the pore-forming completing stake proceeds to next position；
2. described rotary drilling rig is vertical in design stake bit correction, and soil particle is taken out in rotary digging, will leave mud in advance in simultaneously
Slush pump in tank is sent in stake holes, the described slurry coat method of anchor spike hole wall, until design stake holes bottom, described rotary drilling rig
Exit stake holes；
Special rotary digging scraper bowl base expanding and base expanding construction described in second step
1. described special rotary digging scraper bowl machine is in place in stake holes described protecting pipe suitable for reading, and correction is vertical, inserts rotary digging scraper bowl
To the bottom of stake holes, correction is vertical；
2. described rotary digging scraper bowl divide 4-6 time by the diameter setting juice base expanding and base expanding will shovel mouth expand, during rotary digging, soil particle is entered by shoveling mouth
Enter scraper bowl chamber, the diameter of described rotary digging scraper bowl retracts to minimum state, proposes stake holes described protecting pipe spoir granule suitable for reading, then secondary
Increase rotary digging scraper bowl diameter rotary digging fetch earth granule, described rotary digging scraper bowl straight gyrus contracting, rotary digging scraper bowl propose mouth of pipe spoir, until
If the diameter of juice base expanding and base expanding terminates；
3. insert supersonic reflectoscope in stake holes, check whether stake footpath, base expanding and base expanding shape and the diameter of stake holes meet and set
Meter requires, or must study for a second time courses one has flunked, and reaching acceptable print becomes the examination data of stake, and the suitable for reading of described protecting pipe extracted by special rotary digging scraper bowl
Exit；
Loop wheel machine auxiliary construction described in 3rd step
1. steel reinforcement cage is welded described steel reinforcement cage by vertical reinforcement, stirrup and two described Grouting Pipe, this Grouting Pipe bottom
Sealing (this sealing can adopt bicycle tube set), it is to avoid mud immerses, and by loop wheel machine, described steel reinforcement cage is hung in stake holes；
2. described loop wheel machine is adopted to place the conduit filling concrete at steel reinforcement cage center, the bottom of the conduit distance away from stake holes bottom is about
500mm, by the height >=1m after bellout diameter concrete pouring pour into concrete amount first it is ensured that concrete pouring rear tube insertion concrete in depth
>=500mm, by the rising of described concrete in Underwater Concrete Construction construction technology, inclusion stake holes, conduit accordingly shortens, but must assure that and lead
Pipe inserts the depth >=500mm-2000mm in described concrete, it is to avoid drilling slurry immerses pile body concrete；
3. the slurry coat method in stake holes must be reclaimed at any time it is impossible to overflow contaminated site with concrete pouring process in stake holes, return
Receive mud leave in case, pending after use again；
4., after in stake holes, concrete pouring finishes, that is, before gain in strength after concrete final set, in 24-72 hour, Grouting Pipe is with clearly
High-pressure water pump send out plug, and the sealing puncturing described Grouting Pipe bottom terminates；
4th step pile bottom post-grouting construction
1. extract described protecting pipe；
2. the sediment of cement mortar reinforcing pile in the hole injecting and bearing course at pile end soil.
Compared with prior art, it is an advantage of the current invention that: first so that the bearing capacity value of basin shape bottom bottom-enlarging filling pile is big
Amplitude improves；Second, dry ground, the slurry coat method that injection recycles are taken out using rotary digging, realize the zero-emission environmental protection skill of mud
Art；Third, treating that probability is zero, so efficiency of construction is high, thus significantly reducing engineering cost in construction.
Brief description
Fig. 1 is the geomery schematic diagram of the present invention；
Fig. 2 is the structural representation of the present invention；
Fig. 3 is operational procedure schematic diagram of the present invention；
Specific embodiment
As shown in Figures 1 to 3, the present embodiment is that rotary drilling rig (for forming stake holes), rotary spading machine digging machine (are used for using three machines
Formed base expanding and base expanding), loop wheel machine (for dispose steel reinforcement cage with fill concrete) in each stake holes by the pile bottom post-grouting of operation routine cross construction
Basin shape bottom bottom-enlarging filling pile.
The present invention adopts the bottom-enlarging filling pile at basin shape bottom；The size at this basin shape bottom can be by changing the rotation of rotary spading machine digging machine
The shape of bucket is realized；
Fig. 1 is the geomery of the bottom-enlarging filling pile at basin shape bottom, is sized to
D/d≤2.5, b/h=1/4～1/2；
For sand b/h=1/4, α=14 °；
For silt, cohesive soil b/h=1/3～1/2, α=18.5 °～27 °；
In formula, d is described stake bottom diameter；D is described stake diameter；
B is d-d/2；H is described stake bottom height；
α is the angle between described stake bottom diameter and described stake diameter；
The bottom-enlarging filling pile of the present embodiment can also adopt circular arc bottom；This circular arc bottom is anti-with the foundation soil at described basin shape bottom
Power is identical, and for ease of the construction of rotary digging base expanding and base expanding, majority adopts basin shape Bottom Shape size.
The operational procedure of the present invention is (shown in Figure 3):
First step rotary drilling rig rotary digging pile hole construction
1. the suitable for reading of stake holes in design stake position sinks to protecting pipe 1；Dry ground is excavated using rotary drilling rig, simultaneously in stake holes
Injection slurry coat method 2, the pore-forming completing stake proceeds to next position；
2. rotary drilling rig is vertical in design stake bit correction, and soil particle is taken out in rotary digging, will leave in slurry tank in advance simultaneously
Slush pump send in stake holes, the slurry coat method 2 of anchor spike hole wall, until design stake holes bottom, rotary drilling rig exits stake holes；
Second step special rotary digging scraper bowl base expanding and base expanding is constructed
1. special rotary digging scraper bowl machine is in place in stake holes protecting pipe suitable for reading 1, and correction is vertical, the bottom of insertion rotary digging scraper bowl to stake holes
Portion, correction is vertical；
2. rotary digging scraper bowl divide 4-6 time by the diameter setting juice base expanding and base expanding will shovel mouth expand, during rotary digging soil particle by shovel mouth enter shovel
Bucket chamber, the diameter of rotary digging scraper bowl retracts to minimum state, proposes stake holes protecting pipe suitable for reading 1 spoir granule, then secondary increasing rotary digging shovel
Bucket diameter rotary digging fetch earth granule, rotary digging scraper bowl straight gyrus contracting, rotary digging scraper bowl propose mouth of pipe spoir, until setting the diameter of juice base expanding and base expanding
Terminate；
3. insert supersonic reflectoscope in stake holes, check whether stake footpath, base expanding and base expanding shape and the diameter of stake holes meet and set
Meter requires, or must study for a second time courses one has flunked, and reaching acceptable print becomes the examination data of stake, and special rotary digging scraper bowl is extracted the suitable for reading of protecting pipe 1 and moved back
Go out；
3rd step loop wheel machine auxiliary construction
1. steel reinforcement cage is welded steel reinforcement cage 4 by vertical reinforcement, stirrup and two Grouting Pipe 3, Grouting Pipe underseal mouth (this envelope
Mouth can adopt bicycle tube set), it is to avoid mud immerses, and by loop wheel machine, steel reinforcement cage 4 is hung in stake holes；
2. steel reinforcement cage center is aided in by loop wheel machine and place the conduit filling concrete, the bottom of the conduit distance about 500mm away from stake holes bottom,
By the height >=1m after bellout diameter concrete pouring pour into concrete amount first it is ensured that concrete pouring rear tube insertion concrete 5 in depth >=
500mm, by Underwater Concrete Construction construction technology, including the rising of concrete in stake holes 5, conduit accordingly shortens, but must assure that conduit is inserted
Enter the depth >=500mm-2000mm in concrete 5, it is to avoid drilling slurry immerses pile body concrete；
3. the slurry coat method in stake holes must be reclaimed at any time it is impossible to overflow contaminated site with concrete pouring process in stake holes, return
Receive mud leave in case, pending after use again；
4. in stake holes, concrete pouring finishes in later 24-72 hour, is pumped by out plug in Grouting Pipe 2 with clear water 6, hits
The sealing wearing slurry pipe 2 bottom terminates；
4th step pile bottom post-grouting construction
1. extract protecting pipe 1；
2. the sediment of cement mortar 7 reinforcing pile in the hole injecting and bearing course at pile end soil.
Grouting Pipe clear water is opened after plug because of the own final set of stake concrete, does not have the phenomenon of plugging, can wait that run up to can be by continuous
Construct during mortar depositing construction.
The remarkable result of the present invention is so that bearing capacity value increases substantially；Adopt rotary digging to take out dry ground, injection circulation again
The slurry coat method using, realizes the zero-emission green technology of mud；Formation of pile shows the detection in stake footpath and bellout diameter, necessary
When can automatically record and put on record.
The embodiment of the present invention is rotary drilling rig, rotary spading machine digging machine, loop wheel machine using above-mentioned three machines, presses journey in different stake holes
In the basin shape bottom bottom-enlarging filling pile of sequence cross construction, this rotary drilling rig completes stake holes in a stake position and can proceed to b stake position, completes b stake
C stake position can be proceeded to；Rotary spading machine digging machine completes base expanding and base expanding in a stake position, proceeds to b stake position, completes base expanding and base expanding in b stake position and proceeds to c stake position；Hang
Machine completes the above in a stake position and proceeds to b stake position, completes the above in b stake position and proceeds to c stake position；Therefore above-mentioned three machines are applied
Probability is 0% to treating in work, thus efficiency of construction is high, can significantly reduce engineering cost again.
Claims (1)
1. a kind of pile bottom post-grouting bottom-enlarging filling pile, the stake bottom of described bottom-enlarging filling pile is set to basin shape bottom；This bottom-enlarging filling pile
Geomery be d/d≤2.5, b/h=1/4～1/2；For sand b/h=1/4, α=14 °；For silt, cohesive soil b/h
=1/3～1/2, α=18.5 °～27 °；
In formula, d is described stake bottom diameter；D is described stake diameter；
B is d-d/2；H is described stake bottom height；
α is the angle between described stake bottom diameter and described stake diameter；
It is characterized in that, the operational procedure of this bored concrete pile is: include protecting pipe, Grouting Pipe and steel reinforcement cage, and rotary drilling rig, specially
With rotary digging scraper bowl, loop wheel machine；
Rotary drilling rig rotary digging pile hole construction described in the first step
1. the suitable for reading of stake holes in design stake position sinks to described protecting pipe；Dry ground is excavated using described rotary drilling rig, simultaneously in stake
In the hole injects slurry coat method, and the pore-forming completing stake proceeds to next position；
2. described rotary drilling rig is vertical in design stake bit correction, and soil particle is taken out in rotary digging, will leave in slurry tank in advance simultaneously
Slush pump send in stake holes, the described slurry coat method of anchor spike in the hole wall, until design stake holes bottom, described rotary drilling rig exits
Stake holes；
Special rotary digging scraper bowl base expanding and base expanding construction described in second step
1. described special rotary digging scraper bowl machine stake holes is suitable for reading will be in place for described protecting pipe, correction is vertical, and insertion rotary digging scraper bowl is to stake
The bottom in hole, correction is vertical；
2. described rotary digging scraper bowl by design base expanding and base expanding diameter divide 4-6 time will shovel mouth expand, during rotary digging soil particle by shovel mouth entrance shovel
Bucket chamber, the diameter of described rotary digging scraper bowl retracts to minimum state, proposes stake holes described protecting pipe spoir granule suitable for reading, gradually increases
The diameter rotary digging of rotary digging scraper bowl fetch earth granule, described rotary digging scraper bowl diameter retraction, rotary digging scraper bowl propose mouth of pipe spoir, until design
The diameter of base expanding and base expanding terminates；
3. it is inserted into supersonic reflectoscope in stake holes, check whether the stake footpath in stake holes, base expanding and base expanding shape and diameter meet design and want
Ask, or must study for a second time courses one has flunked, reaching acceptable print becomes the examination data of stake, and the suitable for reading of described protecting pipe extracted by described special rotary digging scraper bowl
Exit；
Loop wheel machine auxiliary construction described in 3rd step
1. described steel reinforcement cage is welded by vertical reinforcement, stirrup and two described Grouting Pipe, and this Grouting Pipe bottom adopts bicycle
Inner tube of a tyre set is sealed, it is to avoid mud immerses, and is hung in described steel reinforcement cage in stake holes by loop wheel machine；
2. steel reinforcement cage center is aided in by described loop wheel machine and place the conduit filling concrete, the bottom of conduit apart from 500mm, is pressed away from stake holes bottom
Height >=1m after bellout diameter concrete pouring pours into concrete amount first it is ensured that concrete pouring rear tube inserts depth >=500mm in concrete,
By the rising of described concrete in Underwater Concrete Construction construction technology, inclusion stake holes, conduit accordingly shortens, but must assure that conduit insertion institute
State the depth >=500mm-2000mm in concrete, it is to avoid drilling slurry immerses pile body concrete；
3. the slurry coat method in stake holes must be reclaimed it is impossible to overflow contaminated site with concrete pouring process in stake holes, reclaim mud and deposit
Be placed in ferrum case, pending after use again；
4. in stake holes, concrete pouring finishes in later 24-72 hour and opens plug with clear-water high-pressure pumping in Grouting Pipe, punctures described
The sealing at Grouting Pipe bottom terminates；
4th step pile bottom post-grouting construction
1. extract described protecting pipe；
2. pile bottom post-grouting construction, is pile after the sediment of cement mortar reinforcing pile in the hole of injection and bearing course at pile end soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410211022.2A CN104074184B (en) | 2014-05-07 | 2014-05-07 | Pile base post-grouted expanded-base bored pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410211022.2A CN104074184B (en) | 2014-05-07 | 2014-05-07 | Pile base post-grouted expanded-base bored pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104074184A CN104074184A (en) | 2014-10-01 |
| CN104074184B true CN104074184B (en) | 2017-01-25 |
Family
ID=51595760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410211022.2A Expired - Fee Related CN104074184B (en) | 2014-05-07 | 2014-05-07 | Pile base post-grouted expanded-base bored pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104074184B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988907A (en) * | 2015-08-02 | 2015-10-21 | 王继忠 | Construction method of concrete pile |
| CN107740407B (en) * | 2017-09-26 | 2019-05-14 | 东莞嘉誉诚建设基础工程有限公司 | Pile foundation forming method |
| CN111305194B (en) * | 2019-11-29 | 2022-03-11 | 祝波 | Composite expanded disc pile construction method and equipment |
| CN112922586A (en) * | 2021-02-24 | 2021-06-08 | 武汉长盛工程检测技术开发有限公司 | Single-line inertial navigation type dry-wet hole forming quality detection device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293290A (en) * | 2000-11-10 | 2001-05-02 | 李珠 | Technology for forming pile by under-reaming and grouting |
| CN1492110A (en) * | 2002-09-13 | 2004-04-28 | 郑鸿彰 | Design and construction method of novel man-hole pile |
| KR20110006604A (en) * | 2009-07-14 | 2011-01-20 | 최영준 | Spacer with injection nozzles |
| CN102071679A (en) * | 2010-12-29 | 2011-05-25 | 西安建筑科技大学 | Method for consolidating existing building foundation |
| CN203808057U (en) * | 2014-05-07 | 2014-09-03 | 孔超 | Pile bottom rear grouting cast-in-place belled pile |
-
2014
- 2014-05-07 CN CN201410211022.2A patent/CN104074184B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293290A (en) * | 2000-11-10 | 2001-05-02 | 李珠 | Technology for forming pile by under-reaming and grouting |
| CN1492110A (en) * | 2002-09-13 | 2004-04-28 | 郑鸿彰 | Design and construction method of novel man-hole pile |
| KR20110006604A (en) * | 2009-07-14 | 2011-01-20 | 최영준 | Spacer with injection nozzles |
| CN102071679A (en) * | 2010-12-29 | 2011-05-25 | 西安建筑科技大学 | Method for consolidating existing building foundation |
| CN203808057U (en) * | 2014-05-07 | 2014-09-03 | 孔超 | Pile bottom rear grouting cast-in-place belled pile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104074184A (en) | 2014-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104234055B (en) | A kind of prefabricated pile post-grouting device and technique thereof | |
| CN103410182B (en) | Unilateral pile foundation unloading horizontal top-level pull deviation rectifying and broken pile reinforcement construction method | |
| CN101525881B (en) | Structure of karst strata pile holes protecting wall and method for constructing pile holes | |
| CN110735600B (en) | Mechanical pore-forming pile construction process for karst geology | |
| CN111119940B (en) | Grouting construction treatment method | |
| CN105672348A (en) | Construction method for cropping bridge pile foundation at sandy gravel stratum of abyssal region | |
| CN108166483A (en) | Bored pile construction method | |
| CN204253056U (en) | A kind of shield machine export & import reinforcing structure | |
| CN101614020A (en) | Flexible bladder type anti-corrosive apparatus and use the anticorrosion stake and the job practices of this device | |
| CN104074184B (en) | Pile base post-grouted expanded-base bored pile | |
| CN105239598A (en) | Integral sinking construction method for well-type full-automatic stereo garage | |
| CN110608056A (en) | Method for treating tunnel collapse of water-rich fault zone | |
| CN106930276A (en) | The deep hole blasting of rotary digging bored concrete pile and the construction method of conduit rotary digging removing obstacles | |
| CN102852141A (en) | Rock-socketed pipe pile foundation with pile core by concrete pouring and pile side by static pressure grouting and construction method for rock-socketed pipe pile foundation | |
| CN104818713A (en) | Profile steel cement soil pile construction method adaptive to various stratums | |
| CN109944600A (en) | Shield receiving end reinforced construction method | |
| CN114108649A (en) | Foundation pit reinforcing construction method for mucky soil layer | |
| CN103485347A (en) | Batter pile used for building foundation pit support and construction method thereof | |
| CN105714748A (en) | Excavating construction method for surge shaft in gravel and sandy soil layer | |
| CN107653889A (en) | A kind of shaped steel pressure is poured water the construction method of soil curtain support pile | |
| CN203007934U (en) | Construction device capable of drilling to the bottom of stratum with hard lower portion and unconsolidated upper portion | |
| CN110080779A (en) | Tunnel tunnel bottom karst cave treatment construction method | |
| CN103343534A (en) | Closed precipitation method for foundation pit construction | |
| CN105545315A (en) | Normal pressure tool replacing method for reinforcing excavation face soil layer in shield tunnel construction | |
| CN105040705A (en) | Ground foundation treatment construction technology under multi-karst-cave geological conditions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Kong Chao Document name: Notification of an Office Action |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |