CN108049396A - Cast-in-situ bored pile churning driven sleeve drilling construction method - Google Patents
Cast-in-situ bored pile churning driven sleeve drilling construction method Download PDFInfo
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- CN108049396A CN108049396A CN201711397918.4A CN201711397918A CN108049396A CN 108049396 A CN108049396 A CN 108049396A CN 201711397918 A CN201711397918 A CN 201711397918A CN 108049396 A CN108049396 A CN 108049396A
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- 238000005553 drilling Methods 0.000 title claims abstract description 119
- 238000010276 construction Methods 0.000 title claims abstract description 61
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 230000002787 reinforcement Effects 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 239000002689 soil Substances 0.000 claims abstract description 11
- 239000013049 sediment Substances 0.000 claims abstract description 8
- 238000013461 design Methods 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 claims abstract description 6
- 239000000284 extract Substances 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 210000000515 tooth Anatomy 0.000 claims description 32
- 239000004567 concrete Substances 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 238000005520 cutting process Methods 0.000 claims description 11
- 230000010412 perfusion Effects 0.000 claims description 10
- 239000004575 stone Substances 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 3
- 239000003673 groundwater Substances 0.000 claims description 3
- 230000002706 hydrostatic effect Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 12
- 239000002699 waste material Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000011449 brick Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
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- 230000015271 coagulation Effects 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000003415 peat Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- 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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/385—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/06—Placing concrete under water
-
- 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
- E02D5/66—Mould-pipes or other moulds
- E02D5/665—Mould-pipes or other moulds for making piles
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of cast-in-situ bored pile churning driven sleeve drilling construction methods, it is related to bored pile construction, a kind of cast-in-situ bored pile churning driven sleeve drilling construction method is intended to provide, has the advantages that be convenient for taking out in the soil in sleeve, its key points of the technical solution are that：Step 1：Preparation of construction makes including fabrication of reinforcing cage, measurement and positioning setting-out, sleeve design；Step 2：Rotary drilling rig is in place, and sleeve rotating follow-up construction is driven by sleeve coupler using rotary drilling rig；Step 3：More bit change；Step 4：It fetches earth, drilled to designed elevation in sleeve；Step 5：Drilled-hole inspecting；Step 6：Borehole cleaning checks sediment thickness；Step 7：Place steel reinforcement cage, conduit；Step 8：Check sediment thickness, secondary pile hole cleaning；Step 9：Underwater concreting；Step 10：Churning driven extracts sleeve；Step 11：Pore-forming.
Description
Technical field
The present invention relates to bored pile construction, more particularly to a kind of cast-in-situ bored pile churning driven sleeve drilling construction side
Method.
Background technology
Embedded casing is the important construction procedure of bored pile construction, and the cylinder s buried depth is according to the geology of construction site
Hydrologic condition determines that casing mainly plays positioning, drilling is oriented to, protects the effects that aperture, clearance hole endoporus extexine water.It buries at present
If the main method of the long casing of major diameter has gravity press-in, jetting sinking and vibration-sunk etc., mainly utilize in the world at present
Casing driver, one end connection churning driven drilling rod, one end connection drive sleeve.
It is miscellaneous to fill out but when constructing when in the deep miscellaneous fill layer containing a large amount of stones and brick, concrete construction rubbish
Soil layer is widely distributed in 0 ~ 6m Layer thickness, generally buries casing using soil removal and replacement open cut, then using convolution drilling machine or impact
Drilling machine construction drilled pile, since miscellaneous fill layer thickness is at 6 meters or so, it has not been convenient to soil removal and replacement, therefore cause constructional difficulties.
The content of the invention
The object of the present invention is to provide a kind of cast-in-situ bored pile churning driven sleeve drilling construction methods, have and are convenient for sleeve
The advantages of interior soil takes out.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of cast-in-situ bored pile churning driven sleeve drilling construction method, comprises the following steps：
Step 1：Preparation of construction makes including fabrication of reinforcing cage, measurement and positioning setting-out, sleeve design；
Step 2：Rotary drilling rig is in place, and sleeve rotating follow-up construction is driven by sleeve coupler using rotary drilling rig；
Step 3：More bit change；
Step 4：It fetches earth, drilled to designed elevation in sleeve；
Step 5：Drilled-hole inspecting；
Step 6：Borehole cleaning checks sediment thickness；
Step 7：Place steel reinforcement cage, conduit；
Step 8：Check sediment thickness, secondary pile hole cleaning；
Step 9：Underwater concreting；
Step 10：Churning driven extracts sleeve；
Step 11：Pore-forming.
By using above-mentioned technical proposal, by sleeve coupler sleeve rotating is driven to follow up using rotary drilling rig, make set
Cylinder passes through the deep miscellaneous fill layer containing the building wastes such as a large amount of stones and brick, concrete, and sleeve replaces conventional bore afterwards in place
Head fetches earth, and the drilling operation that fetches earth is completed in sleeve, until pore-forming, follow-up by installation steel reinforcement cage, pour underwater concrete, pours
After using rotary drilling rig pull out sleeve pile, easy to operate, construction efficiency is high, and pile quality is good, saves cost.
The present invention is further set to：If the sleeve in step 1 includes hollow cylinder, is circumferentially opened in cylinder upper end
Dry L-type slot and the circumferential several cutting tooths for being welded on cylinder lower end, direction and the drilling machine of the cutting tooth setting angle rotate
Direction is consistent.
By using above-mentioned technical proposal, cut pin tooth block and arrange stone with the rotary squeezing of rotary digging sleeve, after facilitating sleeve in place
Drill bit fetches earth.
The present invention is further set to：Sleeve coupler in step 2 includes rotation tooth plate, along rotating, tooth plate is circumferentially fixed
And be connected with L-type slot notch snap-gauge, be arranged on rotation tooth plate upper end and the tooth that with drilling machine drilling rod axis pin is used to be connected
Plate connecting plate offers the pin hole passed through for axis pin, the axis pin and pin hole tight fit on the truss plate connection plate.
By using above-mentioned technical proposal, sleeve coupler is with rotary digging sleeve L-type slot notch using the mode that is connected, energy
It contacts with each other, is completely embedded when connector and sleeve being made to work, axis pin and pin hole tight fit prevent sleeve coupler from being taken off with sleeve
From churning driven is empty to be bored.
The present invention is further set to：The rotation tooth plate is made of the Q345 steel plates of 60 × 60cm thickness 40mm.
By using above-mentioned technical proposal, Q345 steel plate comprehensive mechanical properties are good, and cryogenic property, plasticity and weldability are good
Good, easy to process, the rotation tooth plate of thickness 40mm reduces the deformation of rotation tooth plate in use.
The present invention is further set to：After the notch snap-gauge is caught in the L-type slot of sleeve completely, the notch snap-gauge extends
Cylinder 25mm.
By using above-mentioned technical proposal, notch snap-gauge extends cylinder 25mm, reduces notch snap-gauge and is driving cylinder rotation
L-type slot is skidded off when turning so that rotary drilling rig is empty to be bored.
The present invention is further set to：The rotation follow-up construction of step 2 middle sleeve includes,
A. rotary digging sleeve orientation sets pile foundation center using total powerstation survey, makes rotary digging sleeve Xia Kou centers and stake position center weight
It closes, sleeve is observed along line direction and the gradient in horizontal path direction using total powerstation during rotary digging sleeve orientation；
B. rotary digging sleeve follows up, and sleeve coupler rotation drives rotary digging sleeve rotating to bury sleeve, and drilling machine 5 ~ 8r/min of rotating speed is bored
Mantle cylinder top surface is higher by level of ground water 2m, and is higher by construction ground 0.3m, and height should meet the requirement of mud face height in hole；
C. rotary digging sleeve orientation is checked, and after sleeve is buried, rotary digging bushing core position and rotary digging sleeve verticality are carried out
It checks, rotary digging bushing core tolerance≤± 20mm, verticality≤1%.
By using above-mentioned technical proposal, during rotary digging sleeve orientation using total powerstation observe sleeve along line direction and
The gradient in horizontal path direction, it is ensured that drill rod axis are overlapped with sleeve axis, complete the orientation works of rotary digging sleeve, rotary digging set
Cylinder follow-up, the review of rotary digging sleeve orientation is all beneficial in the vertical insertion soil layer of sleeve, beneficial to pore-forming.
The present invention is further set to：It fetches earth, drill in step 4 middle sleeve and be specially to designed elevation：
A. after sleeve is buried, slowly reversion makes sleeve coupler exit L-type slot notch to rotary drilling rig, checks sleeve verticality and hole
Position deviation；
B. the axis pin that sleeve coupler is connected with drilling rod is removed, axis pin is removed tapping and pulled out slowly；Sleeve coupler is unloaded, is replaced normal
Cylinder drilling fetches earth；
C. rotary digging drilling pipe drilling row boring extracting soil, cylinder bores leaf of hinge open-angle and should not be too large during fetching earth, and meets stone and erratic boulder,
Drill bit is taken to invert and increase drilling machine driving torque, is squeezed to hole wall periphery；
D. the loose caving ground such as deep miscellaneous fill layer is using static mud protecting wall drilling and forming hole, the following Muddy Bottoms of sleeve bottom
Farinose argillic horizon drilling is control drilling parameter, ensures hole quality；
Should be first slow rear fast when e. creeping into, between specific gravity of mud control 1.05~1.10, sand factor is not more than 2%, creeps into
There is the mud index of defined head and requirement in journey in retaining hole, with avalanche prevention hole；
F. crept into, drilled using low speed when starting to creep into or through deep miscellaneous fill layer and very soft sill clay intersection
According to geological condition controlled footage speed in journey, vertical degree detection is carried out to drilling rod as the case may be；
G. in drilling process, the promotion speed and decrease speed of drilling rod are controlled；Drilling rod lifting speed is maintained at 0.75~
0.80m/s。
By using above-mentioned technical proposal so that drilling rod prevents the hole that collapses during fetching earth, and ensures drilling rod vertical shift, carries
High hole quality.
The present invention is further set to：Drilled-hole inspecting in step 5 is specially：Pore-forming inspection should be carried out after Completion of Drilling Hole, into
Recovery hole position central point is answered in the detection of Kong Kongwei centers, is measured using dipstick metering inclined along circuit direction and horizontal path direction position
Difference；Pore-forming Pore Diameter Detection uses cage inspecting hole device, and the detection of pore-forming gradient is detected using cage inspection hole device, and depth of pore forming detection is suitable
It is directly measured using lining rope, hole depth should be measured along hole Zhou Jinhang, and first time borehole cleaning should be met the requirements of the standard after pore-forming.
By using above-mentioned technical proposal, pore-forming Pore Diameter Detection uses cage inspecting hole device, is subject to and examines hole device and pass through,
Inspecting hole device should hang and put down gently slowly, prevent inspecting hole device is swung from destroying pit protection mud cake, convenient for follow-up concreting.
The present invention is further set to：Underwater concreting in step 9, using catheter perfusion, perfusion dummy pipe is tried
Spell pressure testing, must not leak, the water pressure of pressure testing is 1.5 times of bottom hole hydrostatic pressure；Conduit bottom away from hole bottom distance 0.3m ~
0.5m, the embedding concrete depth of conduit are not more than 6m, and not less than 2m.
By using above-mentioned technical proposal, try to spell pressure testing before catheter perfusion, reduce conduit leakage during slip casting, protect
Card slip casting process is smoothed out.
The present invention is further set to：In step 10 churning driven extract sleeve be specially according to first rotating, after pull out order and apply
Work, installation sleeve connector start to bore to dig and bore occlusion sleeve, and churning driven slowly rotates, and rotary speed is not more than 5r/min.
By using above-mentioned technical proposal, rotary digging sleeve pulls out speed should not be too fast, prevents the concrete completed to perfusion
It causes to disturb, influences pile quality, while measure rotary digging sleeve inner concrete sedimentation situation.
In conclusion the invention has the advantages that：Containing the building wastes such as a large amount of stones and brick, concrete
Deep miscellaneous fill layer in boring extracting soil when, drive sleeve rotating follow-up construction by using rotary drilling rig, subsequent more bit change,
Facilitate in sleeve and fetch earth, drill to designed elevation, easy to operate, construction efficiency is high, and pile quality is good, saves cost.
Description of the drawings
Fig. 1 is the present embodiment cast-in-situ bored pile churning driven sleeve drilling construction method schematic diagram；
Fig. 2 is the structure diagram that the present embodiment is used to embody sleeve；
Fig. 3 is the enlarged structure schematic diagram in A portions in Fig. 2；
Fig. 4 is the present embodiment middle sleeve rotation follow-up construction method schematic diagram；
Fig. 5 is to fetch earth, drilled to the construction method schematic diagram of designed elevation in the present embodiment middle sleeve.
In figure, 1, cylinder；11st, L-type slot；12nd, cutting tooth；13rd, tooth plate is rotated；14th, notch snap-gauge；15th, truss plate connection plate；
16th, axis pin；17th, pin hole.
Specific embodiment
The present invention is described in further detail below in conjunction with attached drawing.
A kind of cast-in-situ bored pile churning driven sleeve drilling construction method, such as Fig. 1 comprise the following steps：
Step 1：Preparation of construction makes including fabrication of reinforcing cage, measurement and positioning setting-out, sleeve design.
Such as Fig. 2, sleeve design makes：Sleeve includes hollow cylinder 1, the circumferential several L-type slots for being opened in 1 upper end of cylinder
11（Such as Fig. 3）And the circumferential several steel alloy cutting tooths 12 for being welded on 1 lower end of cylinder, the direction of 12 setting angle of cutting tooth with
Drilling machine direction of rotation is consistent, prevents that cutting tooth 12 drops during sleeve rotating.
Such as Fig. 3, rotary digging sleeve should have enough rigidity and intensity, select the Q345 steel plates processing of δ=20mm, made
Into rear enclosure tube length 6m, internal diameter φ 0.87m are bigger 7cm than stake footpath.Rotary digging sleeve is suitable for reading to be cut using cutting machine along rotary digging sleeve is circumferential
15 × 10cm adjacent centers spacing is the L-type slot 11 of 47cm.Cutting tooth 12 is closed using the high-strength high-ductility hard of gear wheel shape
Golden tooth, circumferentially disposed 6 along sleeve, center spacing 45.5cm；Cutting tooth 12 is embedded in sleeve bottom, using conventional arc weld into
Row welding, welding current are stablized, it is ensured that the defects of weld seam is without slag inclusion, stomata, crackle.
Step 2：Such as Fig. 1, rotary drilling rig is in place, and rotary drilling rig model FR360D is connected using rotary drilling rig by sleeve
It connects device and drives sleeve rotating follow-up construction.
Rotary drilling rig is specially in place：Drilling machine prepares in place, the locking situation of safety pin is checked before drilling machine walking, drilling machine is just
Anti-inclining measure can be taken during position；Drilling machine drives to the hole to be constructed position, adjusts mast angle, operates hoist engine, will bore
Head center is aligned with drill center, and is put into hole, is adjusted drilling machine verticality parameter, is made drilling rod vertical, drilling rod slope is less than
1%.The centrical deviation in sleeve coupler center and hole is not greater than 20mm；Drilling machine carries out test running afterwards in place, after working well
Sleeve coupler is replaced, promotes sleeve coupler occlusion sleeve notch, align piles position prepares sleeve follow-up construction.
Such as Fig. 3, sleeve coupler includes rotation tooth plate 13, along rotation tooth plate 13 circumferentially fixed and be connected with L-type slot 11
Notch snap-gauge 14 is arranged on truss plate connection plate that is rotating 13 upper end of tooth plate and with drilling machine drilling rod axis pin 16 being used to be connected
15, the pin hole 17 passed through for axis pin 16, axis pin 16 and 17 tight fit of pin hole are offered on truss plate connection plate 15.
Such as Fig. 3, rotation tooth plate 13 is made of the Q345 steel plates of 60 × 60cm thickness 40mm, Q345 steel plates synthesis mechanical property
Can be good, cryogenic property, plasticity and weldability are good, easy to process, on rotation tooth plate 13, along 13 center of rotation tooth plate
The notch snap-gauge 14 of circumferential erecting and welding, notch snap-gauge 14 long 18cm, wide 3cm, 14 erecting and welding position of notch snap-gauge and rotary digging
Sleeve 11 mouthfuls of correspondences of L-type slot suitable for reading, after being caught in 11 mouthfuls of the L-type slot of rotary digging sleeve completely, 14 exposed 25mm of notch snap-gauge.
Such as Fig. 3,11 notch of L-type slot of sleeve coupler and rotary digging sleeve uses the mode that is connected, can make sleeve connection
Device and sleeve contact with each other when working, and are completely embedded, truss plate connection plate 15 is connected with drilling machine drilling rod using axis pin 16, axis pin
16 junctions can also set locking device（It is not shown in figure）, if locking device is to be threaded in axis pin 16 to stretch out tooth plate company
The locking nut at 15 both ends of fishplate bar prevents sleeve coupler from departing from sleeve, and rotary drilling rig is empty to be bored.
Such as Fig. 4, the follow-up construction of rotary digging sleeve：
A. rotary digging sleeve orientation sets pile foundation center using total powerstation survey, makes rotary digging sleeve Xia Kou centers and stake position center weight
It closes, sleeve is observed along line direction and the gradient in horizontal path direction using total powerstation during rotary digging sleeve orientation, it is ensured that
Drill rod axis are overlapped with sleeve axis, complete the orientation works of rotary digging sleeve；
B. rotary digging sleeve follows up, and sleeve coupler rotation drives rotary digging sleeve rotating to bury sleeve, 5 ~ 8r/min of drilling machine rotating speed.It bores
Mantle cylinder top surface is higher by level of ground water 2m, and is higher by construction ground 0.3m, and what height should still meet mud face height in hole will
It asks；
C. rotary digging sleeve orientation is checked, and after sleeve is buried, rotary digging bushing core position and rotary digging sleeve verticality are carried out
It checks, rotary digging bushing core tolerance≤± 20mm, verticality≤1%.
Such as Fig. 1, step 3：More bit change.
Step 4：It fetches earth, drilled to designed elevation, such as Fig. 5 in sleeve, concrete operations are：
A. after sleeve is buried, slowly reversion makes sleeve coupler exit notch to rotary drilling rig, checks sleeve verticality and hole position partially
Difference；
B. the axis pin that sleeve coupler is connected with drilling rod is removed, axis pin is removed tapping and pulled out slowly, prevents axis pin from dropping out pin hole suddenly；It unloads
It traps coupling sleeve, replaces normal cylinder drilling and fetch earth；
C. rotary digging drilling pipe drilling row boring extracting soil, cylinder bores leaf of hinge open-angle and should not be too large during fetching earth, and meets stone and erratic boulder,
Drill bit is taken to invert and increase drilling machine driving torque, is squeezed to hole wall periphery；
D. the loose caving ground such as deep miscellaneous fill layer is using static mud protecting wall drilling and forming hole, the following Muddy Bottoms of sleeve bottom
Farinose argillic horizon drilling is control drilling parameter, ensures hole quality；
Should be first slow rear fast when e. creeping into, between specific gravity of mud control 1.05~1.10, sand factor is not more than 2%.It crept into
There is the mud index of defined head and requirement in journey in retaining hole, with avalanche prevention hole；
F. crept into when starting to creep into or through deep miscellaneous fill layer and very soft sill clay intersection using low speed.It drilled
According to geological condition controlled footage speed in journey, vertical degree detection is carried out to drilling rod as the case may be, prevents drilling rod because can not
Governing factor and change, influence hole quality；
G. in drilling process, the promotion speed and decrease speed of drilling rod are controlled.Drilling bucket lifting speed is maintained at 0.75~
0.80m/s。
Such as Fig. 1, step 5：Drilled-hole inspecting, specifically, pore-forming inspection should be carried out after Completion of Drilling Hole, pore-forming hole position centre bit
It puts detection and answers recovery hole position central point, measured using dipstick metering along circuit direction and horizontal path direction position deviation.Pore-forming aperture
Detection is subject to and examines hole device and pass through, inspecting hole device should hang and put down gently slowly, prevent inspecting hole device is swung from destroying shield using cage inspecting hole device
Wall mudcake.Cage inspection hole device detection can be used in the detection of pore-forming gradient.Depth of pore forming detection preferably uses lining rope directly to measure, hole depth
It should be measured along hole Zhou Jinhang.First time borehole cleaning should be met the requirements of the standard after pore-forming.
Step 6：Borehole cleaning checks sediment thickness.
Step 7：Place steel reinforcement cage, conduit.
Steel reinforcement cage is transported to construction site using special transport vehicle, and muscle cage carries out every preparation before hanging, will be attached to
Soil on steel reinforcement cage removes clean, the shortening steel reinforcement cage placement time.Muscle cage is hung, and can use double lifting point or single suspension centre, suspension centre position
Putting should be appropriate, generally at stirrup, for the steel reinforcement cage being relatively large in diameter, can take measures to be reinforced lifting point, to ensure
It will not be deformed during reinforcement cage hoisting, hang and slowly transferred to designed elevation into Kong Shiying alignments drill center.If being hampered should stop
Decentralization, ascertains the reason and is handled.Forbid raised pelter, collision and transfer by force.Muscle cage is installed in place, and should be adopted after inspection is errorless
Reliable location measure is taken, prevents that framework of steel reinforcement floats or sinks in concreting process.
Step 8：Check sediment thickness, secondary pile hole cleaning.
Step 9：Underwater concreting.
Underwater concreting use catheter perfusion, perfusion dummy pipe carry out examination spell pressure testing, must not leak, the hydraulic pressure of pressure testing
Power is 1.5 times of bottom hole hydrostatic pressure.Conduit bottom is not more than away from hole bottom distance 0.3m ~ 0.5m, the embedding concrete depth of conduit
6m, and not less than 2m.Underwater concrete has good mobility, and the slump generally requirement is in 200 ~ 220mm；Concrete is applied
Work should be continuous, must not pause halfway.And should try one's best the break time for shortening and removing conduit, the time that pours per pile should not be too
It is long, completion is preferably poured in 2h.
Step 10：Churning driven extracts sleeve.Sleeve is removed after concrete initial set, is carried out before final set, is pulled out using churning driven
Except sleeve, according to first rotating, after pull out sequence construction, installation sleeve connector starts to bore to dig and bores occlusion sleeve, and churning driven is slow
Rotation, rotary speed are not preferably greater than 5r/min, and rotary digging sleeve pulls out speed should not be too fast, prevent from making the coagulation that perfusion is completed with local methods
Into disturbance, pile quality is influenced, while measures rotary digging sleeve inner concrete sedimentation situation.After sleeve is pulled out, sleeve connection is checked
Device cylinder bores rotation tooth plate 13 and 14 welded condition of notch snap-gauge, generates and is welded with reinforcement in time at crack.
Step 11：Pore-forming.
By sleeve coupler sleeve rotating is driven to follow up using rotary drilling rig, sleeve is made to pass through containing a large amount of stones and brick
The deep miscellaneous fill layer of the building wastes such as block, concrete, sleeve replace conventional bit and fetch earth, complete to fetch earth in sleeve afterwards in place
Drilling operation until pore-forming, follow-up by installation steel reinforcement cage, poured underwater concrete, is pulled out after pouring using rotary drilling rig
Sleeve pile, easy to operate, construction efficiency is high, and pile quality is good, saves cost.
In entire work progress, running check bit diameter, the timely soldering of serious wear, it is ensured that bit diameter satisfaction is applied
Work requirement.Depth of pore forming is checked by measuring two methods of drilling tool and lining rope measurement, it is ensured that stake is long to be not less than designing pile length.It bores
In and after pore-forming, mud property index is detected using densimeter, mud sand content meter, mud viscosimeter, adjusts mud in time
The related index of mud of borehole cleaning must reach code requirement during performance, particularly whole hole.All steel are marched into the arena to have into field quality and be demonstrate,proved
Bright, and rechecked, splice uses electric arc welding, and censorship and inspects by random samples at any time, and steel reinforcement cage processing dimension must be pressed strictly
It is carried out according to design, related dimensional discrepancy must meet code requirement.
Personnel into people construction site must strictly observe safety management in construction site regulation, wear a safety helmet, non-constructor
Member is not allowed into people construction site.Site operation electricity consumption has personal management, and the equipment such as distribution box, electric welding machine are respectively provided with ground connection, installation
Earth leakage protective device prevents that the rainy day short-circuit.The instrument of construction usage, equipment should be checked that safety device is complete, churning driven master
Elevator has the function of " free releasing ", ensures that rate of penetration is synchronous with steel wire rope, easy to operate freely.
After drilling machine is in place, drilling machine and corollary equipment should be checked comprehensively.Drilling machine is installed must be steady, secured.
Drilling machine operation on 10 ° or more of slope is avoided, rotary machine, steering, T-shaped not travelled on the slope on direction, to prevent hair
Raw danger of toppling.Drilling machine walking, drilling on weak ground should use steel subgrade case or laying steel plate.Bore operation
Personnel pay attention to formation variation situation and machine run situation in hole, exception occur, stop to bore immediately.Drilling machine stops boring, it is necessary to by drill bit
It proposes outside hole, must not be detained in hole, while cover well head.
Waste oil, waste water, the waste residue generated in construction is discharged by appointed place, to avoid pollution air and water source, drilling
Mud during sealing of hole should be recycled and utilized by mud circulating purification system, and pay attention to preventing or reducing environmental pollution.It applies
Workshop ground connection and reasonable arrangement, sets sedimentation basin, service rack etc., and construction site traffic is cleaned, and vehicle crew carries out into appearing on the scene
Real name is registered.The waste materials such as the surface layer peat to place cleaning will transport to the place specified and be discarded in time.It is taken out in drilling
Dregs be timely transported place, keep place clean and tidy.Site operation placing of material is neat, accomplish it is horizontal in a row, it is perpendicular embark on journey, granular media
Material will build pond stacking if necessary, and material will set up railing stacking.Energy conservation and environmental protection mechanical equipment is selected, insulating noise is taken to arrange
It applies, reduces noise, reducing influences surrounding enviroment.
It is that 15m long contrast tables are processed using conventional method and this method below：
| Project | Stake is long | Drill duration | It measures design side | It measures reality side | Exuberant coefficient |
| Conventional method | 15 | 7.37 | 7.84 | 12.3 | 1.57 |
| This method | 15 | 1.46 | 7.84 | 8.2 | 1.05 |
It is constructed using conventional method, actual filling concrete side's amount is calculated by average value 12.3m3, needs C35 concrete 5178.3m
3, using this method construction pile foundation, actual perfusion side's amount is calculated by average value 8.2m3, needs C35 concrete 3452.2m3.
This method saves concrete 1726.1m3, saves man-hour 2105h, the cost-effective machinery 60.6 ten thousand yuan, reduced
Working day cost improves work efficiency, and achieves excellent economic benefit with this method construction, and ensure that pile matter
Amount, accelerates project progress.
It solves the problems, such as that construction speed is slow, accelerates project progress, peace and quiet are more early provided for surrounding cities resident
Living environment, construct harmonious external social construction environment.
Sleeve and sleeve coupler can be reused simultaneously, improve the utilization rate of material, reduce steel energy consumption, carry
The high security of construction operation, achieves good social benefit.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of no creative contribution after this specification is read, but as long as at this
It is all protected in the right of invention be subject to Patent Law.
Claims (10)
1. a kind of cast-in-situ bored pile churning driven sleeve drilling construction method, which is characterized in that comprise the following steps：
Step 1：Preparation of construction makes including fabrication of reinforcing cage, measurement and positioning setting-out, sleeve design；
Step 2：Rotary drilling rig is in place, and sleeve rotating follow-up construction is driven by sleeve coupler using rotary drilling rig；
Step 3：More bit change；
Step 4：It fetches earth, drilled to designed elevation in sleeve；
Step 5：Drilled-hole inspecting；
Step 6：Borehole cleaning checks sediment thickness；
Step 7：Place steel reinforcement cage, conduit；
Step 8：Check sediment thickness, secondary pile hole cleaning；
Step 9：Underwater concreting；
Step 10：Churning driven extracts sleeve；
Step 11：Pore-forming.
2. cast-in-situ bored pile churning driven sleeve drilling construction method according to claim 1, it is characterised in that：In step 1
Sleeve include hollow cylinder（1）, circumferential be opened in cylinder（1）Several L-type slots of upper end（11）And circumferentially it is welded on cylinder
Body（1）Several cutting tooths of lower end（12）, the cutting tooth（12）The direction of setting angle is consistent with drilling machine direction of rotation.
3. cast-in-situ bored pile churning driven sleeve drilling construction method according to claim 2, it is characterised in that：In step 2
Sleeve coupler include rotation tooth plate（13）, along rotation tooth plate（13）It is circumferentially fixed and with L-type slot（11）The notch card of connection
Plate（14）, be arranged on rotation tooth plate（13）Upper end and with drilling machine drilling rod use axis pin（16）The truss plate connection plate of connection
（15）, the truss plate connection plate（15）On offer for axis pin（16）The pin hole passed through（17）, the axis pin（16）With pin hole
（17）Tight fit.
4. cast-in-situ bored pile churning driven sleeve drilling construction method according to claim 3, it is characterised in that：The rotation
Tooth plate（13）It is made of the Q345 steel plates of 60 × 60cm thickness 40mm.
5. cast-in-situ bored pile churning driven sleeve drilling construction method according to claim 3, it is characterised in that：The notch
Snap-gauge（14）The L-type slot of sleeve is caught in completely（11）Afterwards, the notch snap-gauge（14）Extend cylinder（1）25mm.
6. cast-in-situ bored pile churning driven sleeve drilling construction method according to claim 3, it is characterised in that：In step 2
Sleeve rotating follow-up construction includes,
A. rotary digging sleeve orientation sets pile foundation center using total powerstation survey, makes rotary digging sleeve Xia Kou centers and stake position center weight
It closes, sleeve is observed along line direction and the gradient in horizontal path direction using total powerstation during rotary digging sleeve orientation；
B. rotary digging sleeve follows up, and sleeve coupler rotation drives rotary digging sleeve rotating to bury sleeve, and drilling machine 5 ~ 8r/min of rotating speed is bored
Mantle cylinder top surface is higher by level of ground water 2m, and is higher by construction ground 0.3m, and height should meet the requirement of mud face height in hole；
C. rotary digging sleeve orientation is checked, and after sleeve is buried, rotary digging bushing core position and rotary digging sleeve verticality are carried out
It checks, rotary digging bushing core tolerance≤± 20mm, verticality≤1%.
7. cast-in-situ bored pile churning driven sleeve drilling construction method according to claim 3, it is characterised in that：In step 4
It fetches earth, drill in sleeve and be specially to designed elevation：
A. after sleeve is buried, slowly reversion makes sleeve coupler exit L-type slot notch to rotary drilling rig, checks sleeve verticality and hole
Position deviation；
B. the axis pin that sleeve coupler is connected with drilling rod is removed, axis pin is removed tapping and pulled out slowly；Sleeve coupler is unloaded, is replaced normal
Cylinder drilling fetches earth；
C. rotary digging drilling pipe drilling row boring extracting soil, cylinder bores leaf of hinge open-angle and should not be too large during fetching earth, and meets stone and erratic boulder,
Drill bit is taken to invert and increase drilling machine driving torque, is squeezed to hole wall periphery；
D. the loose caving ground such as deep miscellaneous fill layer is using static mud protecting wall drilling and forming hole, the following Muddy Bottoms of sleeve bottom
Farinose argillic horizon drilling is control drilling parameter, ensures hole quality；
Should be first slow rear fast when e. creeping into, between specific gravity of mud control 1.05~1.10, sand factor is not more than 2%, creeps into
There is the mud index of defined head and requirement in journey in retaining hole, with avalanche prevention hole；
F. crept into, drilled using low speed when starting to creep into or through deep miscellaneous fill layer and very soft sill clay intersection
According to geological condition controlled footage speed in journey, vertical degree detection is carried out to drilling rod as the case may be；
G. in drilling process, the promotion speed and decrease speed of drilling rod are controlled；Drilling rod lifting speed is maintained at 0.75~
0.80m/s。
8. cast-in-situ bored pile churning driven sleeve drilling construction method according to claim 3, it is characterised in that：In step 5
Drilled-hole inspecting be specially：Pore-forming inspection should be carried out after Completion of Drilling Hole, recovery hole position center is answered in the center detection of pore-forming hole position
Point is measured using dipstick metering along circuit direction and horizontal path direction position deviation；Pore-forming Pore Diameter Detection uses cage inspecting hole device, into
Hole gradient detection preferably uses lining rope directly to measure using cage inspection hole device detection, depth of pore forming detection, and hole depth should be along Kong Zhoujin
Row measures, and first time borehole cleaning should be met the requirements of the standard after pore-forming.
9. cast-in-situ bored pile churning driven sleeve drilling construction method according to claim 3, it is characterised in that：In step 9
Underwater concreting, using catheter perfusion, perfusion dummy pipe carries out examination and spells pressure testing, must not leak, the water pressure of pressure testing is hole
1.5 times of bottom hydrostatic pressure；Away from hole bottom distance 0.3m ~ 0.5m, the embedding concrete depth of conduit is not more than 6m for conduit bottom, and
Not less than 2m.
10. cast-in-situ bored pile churning driven sleeve drilling construction method according to claim 3, it is characterised in that：Step 10
Middle churning driven extract sleeve be specially according to first rotating, after pull out sequence construction, installation sleeve connector starts to bore to dig and bores occlusion
Sleeve, churning driven slowly rotate, and rotary speed is not more than 5r/min.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109371974A (en) * | 2018-10-25 | 2019-02-22 | 广西建工集团基础建设有限公司 | A kind of PHC tubular pole implantation construction method suitable for hard geology |
| CN109371960A (en) * | 2018-12-12 | 2019-02-22 | 河北庄重工程机械有限公司 | A kind of SRP engineering method |
| CN110145232A (en) * | 2019-05-23 | 2019-08-20 | 贵州建工集团第六建筑工程有限责任公司 | A kind of construction method for not mending slurry churning driven borehole |
| CN110158579A (en) * | 2019-04-26 | 2019-08-23 | 中国水利水电第九工程局有限公司 | A kind of bored pile construction method |
| CN111021948A (en) * | 2019-12-30 | 2020-04-17 | 深圳市盛业地下工程有限公司 | Pile foundation combination equipment for rapid pore-forming of complex geology |
| CN111058767A (en) * | 2019-12-06 | 2020-04-24 | 广东省基础工程集团有限公司 | Construction method of rock-socketed cast-in-situ bored pile |
| CN111101865A (en) * | 2019-12-30 | 2020-05-05 | 深圳市盛业地下工程有限公司 | High efficiency drilling equipment |
| CN111608590A (en) * | 2020-07-08 | 2020-09-01 | 辛秋娥 | Improved rock taking drilling tool of rotary drilling machine |
| CN113137190A (en) * | 2021-05-13 | 2021-07-20 | 中信国安建工集团有限公司 | Rotary drilling rig drill rod component and rotary drilling rig |
| CN113338274A (en) * | 2021-06-01 | 2021-09-03 | 中铁十八局集团有限公司 | Anchor rod pile locator is built to underground space |
| CN113373925A (en) * | 2021-06-02 | 2021-09-10 | 中交一公局第一工程有限公司 | Method and device for installing steel sheet pile in sandstone stratum by rotary drilling rig |
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| CN109371974A (en) * | 2018-10-25 | 2019-02-22 | 广西建工集团基础建设有限公司 | A kind of PHC tubular pole implantation construction method suitable for hard geology |
| CN109371960A (en) * | 2018-12-12 | 2019-02-22 | 河北庄重工程机械有限公司 | A kind of SRP engineering method |
| CN110158579A (en) * | 2019-04-26 | 2019-08-23 | 中国水利水电第九工程局有限公司 | A kind of bored pile construction method |
| CN110145232B (en) * | 2019-05-23 | 2020-09-25 | 贵州建工集团第六建筑工程有限责任公司 | Construction method for rotary drilling hole without slurry supplement |
| CN110145232A (en) * | 2019-05-23 | 2019-08-20 | 贵州建工集团第六建筑工程有限责任公司 | A kind of construction method for not mending slurry churning driven borehole |
| CN111058767B (en) * | 2019-12-06 | 2021-08-31 | 广东省基础工程集团有限公司 | Construction method of rock-socketed cast-in-situ bored pile |
| CN111058767A (en) * | 2019-12-06 | 2020-04-24 | 广东省基础工程集团有限公司 | Construction method of rock-socketed cast-in-situ bored pile |
| CN111101865A (en) * | 2019-12-30 | 2020-05-05 | 深圳市盛业地下工程有限公司 | High efficiency drilling equipment |
| CN111021948A (en) * | 2019-12-30 | 2020-04-17 | 深圳市盛业地下工程有限公司 | Pile foundation combination equipment for rapid pore-forming of complex geology |
| CN111608590A (en) * | 2020-07-08 | 2020-09-01 | 辛秋娥 | Improved rock taking drilling tool of rotary drilling machine |
| CN111608590B (en) * | 2020-07-08 | 2021-12-07 | 湖北旭腾建设工程有限公司 | Improved rock taking drilling tool of rotary drilling machine |
| CN113137190A (en) * | 2021-05-13 | 2021-07-20 | 中信国安建工集团有限公司 | Rotary drilling rig drill rod component and rotary drilling rig |
| CN113338274A (en) * | 2021-06-01 | 2021-09-03 | 中铁十八局集团有限公司 | Anchor rod pile locator is built to underground space |
| CN113373925A (en) * | 2021-06-02 | 2021-09-10 | 中交一公局第一工程有限公司 | Method and device for installing steel sheet pile in sandstone stratum by rotary drilling rig |
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