CN110387880A - A kind of bored pile construction method - Google Patents
A kind of bored pile construction method Download PDFInfo
- Publication number
- CN110387880A CN110387880A CN201910690691.5A CN201910690691A CN110387880A CN 110387880 A CN110387880 A CN 110387880A CN 201910690691 A CN201910690691 A CN 201910690691A CN 110387880 A CN110387880 A CN 110387880A
- Authority
- CN
- China
- Prior art keywords
- casing
- concrete
- hole
- bored pile
- construction method
- 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
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of bored pile construction methods, Step 1: drilling machine pilot hole: processing drilling place substrate surface, rear aperture errorless to the review of stake position；Step 2: casing under vibration hammer, is attached between more piece casing and casing using high-strength bolt nut；Step 3: drilling machine pore-forming, after casing reaches predetermined depth, applies and is drilled into design stake bottom absolute altitude, first time borehole cleaning；Step 4: decentralization steel reinforcement cage, concrete perfusion, perfusion are carried out continuously, the superfilled 1-2m of concrete；Step 5: vibration hammer pulls out casing, after the completion of filling concrete, casing is extracted into stake holes, casing is recycled.This method does not pollute underground water, and construction site is clean and tidy, does not influence ambient enviroment, meets epipodium guaranteed request, and more than this method speed of application is more fast again than traditional handicraft, construction efficiency is high.
Description
Technical field
A kind of bored pile construction method of the present invention, belongs to poured pile base technical field of construction.
Background technique
For the needs for meeting engineering construction, pile foundation is extensive as a kind of most effective way for improving foundation bearing capacity
Using pile foundation is generally divided into cast-in-situ bored pile and prefabricated pile.The ratio that wherein cast-in-situ bored pile accounts in pile foundation construction weighs about
70%, the construction of cast-in-situ bored pile is generally divided into dry operation and mud off operation.But it is affected by environment, in Hong Kong and generation
Mud off is forbidden to use in the bored pile construction of developed country, boundary, while in loose sand, thin dust rock layers, stream
Under layer of sand, the thick geological conditions such as Muddy Bottoms layer and karst landform, carries out mud off and be difficult to ensure that hole wall is stablized, this feelings
It is just needed under condition using full casing construction technology.
Cast-in-situ bored pile refers to forms stake holes by machine drilling means in engineering site in foundation soil, in hole after pore-forming
Interior placement steel reinforcement cage, concrete perfusion and the stake being made into.Drilling hole bored concrete pile technology is due to big, larger straight with bearing capacity can be made
The stake of diameter and various length and the characteristics of be applicable in various soil properties, and obtained in urban architecture commonly used.
Existing construction technology of cast-in-place bored mainly uses drilling machine to carry out pore-forming operation on ground, forms stake holes.But
It is in existing bored pile construction work progress, it may appear that the problem of drilling rod deviates, it is therefore desirable to carry out the position of drilling rod
Adjustment, to influence the efficiency of construction.Meanwhile when placing steel reinforcement cage into stake holes, single-unit drilling steel reinforcement cage is transferred one by one, steel
Muscle cage is easy bias during placing cause to be easy after forming pile is perfused
There is part reinforcing steel bars exposed.
Summary of the invention
In order to overcome the deficiencies of the prior art, the present invention provides a kind of bored pile construction method, this method is to underground
Water does not pollute, and construction site is clean and tidy, does not influence ambient enviroment, meets epipodium guaranteed request, this method speed of application is than traditional work
More than skill is fast again, construction efficiency is high,
The invention is realized by the following technical scheme:
A kind of bored pile construction method, comprising the following steps:
Step 1: drilling machine pilot hole:
Processing drilling place substrate surface: field is flat, removes earth's surface rubbish and barrier, encounters the barrier that can not be drilled, uses
After excavator is dug out, plain earthen backfill is simultaneously tamped；
By the design drawing requirement of stake position, survey sets stake position and marks, and draws a circle with lime centered on stake position, multiple to stake position
After core is errorless, aperture, aperture depth is 6-8m；
Step 2: casing under vibration hammer,
Steel pile casting is made of the helix tube of 12mm or more, and shear blade is arranged in casing bottom, using height between more piece casing and casing
Strength bolts are attached, and strengthening measure is taken in casing coupling part, and casing uses gripper, are carried out under vibrating downwards
It is heavy；
Step 3: drilling machine pore-forming；
After casing reaches predetermined depth, pore-forming drill repositions, and dregs in hole is dug out outside hole, applies and is drilled into design stake bottom mark
Height, first time borehole cleaning；
Step 4: decentralization steel reinforcement cage, concrete perfusion,
Steel reinforcement cage is transferred, carries out bottom hole two clearly with gas lift reverse circulation after steel reinforcement cage decentralization, detection sediment meets design requirement
Afterwards, filling concrete is carried out, perfusion is carried out continuously, and midway idle hours is no more than 30min, mixed to guarantee to extract pile crown after casing
Solidifying soil property amount, after the superfilled 1-2m casing of concrete reaches predetermined depth, pore-forming drill repositions, and applies and is drilled into design stake bottom mark
Height, first time borehole cleaning；
Step 5: vibration hammer pulls out casing, after the completion of filling concrete, casing merogenesis is extracted into stake holes using vibration hammer equipment,
Casing is recycled, and final section casing is interior after having filled concrete 1 hour to be pulled up, and in withdrawal process in timely monitoring holes
Concrete is replenished in time when concrete liquid level is lower than stake top absolute altitude in concrete liquid level.
Preferably, it pulls out casing key control point: during pulling out casing, casing being lifted by hole for hoist, vibration hammer is at the uniform velocity grasped
Make, prevents from promoting excessive velocities, cause concrete density to decline, influence pile quality.Casing withdrawal process keeps vertical, In
Construction personnel commander is lower to complete, and guarantees casing verticality, prevents the variation of casing verticality from causing pile body locally folder mud.To guarantee stake
Head quality when pulling out casing final section, checks casing inner concrete absolute altitude, when concrete-pile top mark is high inadequate, by mud in casing
Slurry is cleaned out, and secondary pouring is carried out.
Preferably, the filling concrete is realized using automotive pump combination underwater concrete construction technique.
Preferably, gyroscope is provided on the drilling machine, the gyroscope is located above the drilling rod of drilling machine, and the drilling rod is
Sleeve structure, including outer bar and the interior bar being socketed in outer bar, the outer bar and interior bar are concentric, and the inner wall of the outer bar is provided with
The axial track slided up and down for interior bar；The boring bar head of the drilling machine is provided with drill bit, is provided at the top of the drill bit
Circumferential churning driven tooth；The boring bar head surrounding is setting up and down there are two positioning ring, and described two positioning rings are in the same size and phase
Mutually parallel, the drilling rod is located inside two positioning rings.
Preferably, the quantity of the interior bar is one or more.
Preferably, the casing includes connection section and coxopodite, and the upper end of the cylinder coxopodite is connecting pin, and lower end is provided with
Shear blade, the shear blade are set to cylinder inboard wall；Connection section top and bottom are connecting pin, and the connecting pin, which is provided with, to be added
Strong section, the connection section and coxopodite upper end are provided with multiple holes for hoist, and connection section lower end is provided with multiple connecting holes, institute
It states hole for hoist and connection hole site matches setting, be provided with mantle fiber on the hole for hoist and connecting hole hole wall；The connection
Detachable is provided with bolt in hole, and the lower section of section insertion is internal on the cylinder, and described two cylinders are removable by high-strength bolt
Unload the connection of formula.
Preferably, the cylinder is suitable for the unfavorable geology pore-forming under conditions of complicated geology, mud-less pollution.
Preferably, the unfavorable geology includes but is not limited to solution cavity interlayer, rock stratum, cobble soil layer, dust layer.
Preferably, borehole cleaning sediment requirement twice are as follows: the mud for being discharged or extracting out in hole is without 2~3mm particle, and mud balance is not
Greater than 1 .1, sand factor is less than 2%, 17~20s of viscosity.
Compared with prior art, the invention has the following beneficial effects:
Full casing bored pile construction does not use bentonite or chemical slurry retaining wall, does not pollute to underground water, construction site
Neatly, the normal work and life for not influencing surrounding resident and enterprise, meet epipodium guaranteed request.
Conventional borehole bored concrete pile because stratum, environmental grounds can not pore-forming in the case where, guarantee pile foundation engineering construction it is suitable
Benefit carries out.
Compare the construction process for bored pile of other forms of protective wall, configuration mud is not needed, without pit protection mud cake pair
The influence of bearing capacity, bearing capacity is reliable, and pile quality meets code requirement.
More than speed of application is more fast again than traditional handicraft, construction efficiency is high, lays well for the smooth construction of integrated engineering
Basis.
The connecting rod of casing cylinder junction is small in size, not only reduces resistance when casing is extracted, moreover it is possible to reduce to perfusion
The damage of stake surrounding soil, so that the scope of application of the cast-in-situ bored pile casing is wider.
Detailed description of the invention
Fig. 1 is flow chart of the present invention；
Fig. 2 is 1 casing structure schematic diagram of the embodiment of the present invention；
Fig. 3 is 1 jackrod structure schematic diagram of the embodiment of the present invention；
Fig. 4 is 1 drilling rod outer bar of the embodiment of the present invention and interior bar structural schematic diagram；
Fig. 5 is 2 casing structure schematic diagram of the embodiment of the present invention；
Fig. 6 is deviational survey pore structure schematic diagram of the present invention
In figure, cylinder 1 pushes up sword 2, shear blade 3, hole for hoist 4, connecting hole 5, connecting rod 6, bolt 7, deviational survey hole 8, drilling rod 11, positioning
Ring 12 bores tooth 16, connection section 21, coxopodite 22, strengthening segment 23, outer bar 31, interior bar 32, track 33.
Specific embodiment
The present invention is described in further detail combined with specific embodiments below, but protection scope of the present invention is not
Be limited to these embodiments, it is all without departing substantially from the change of present inventive concept or equivalent substitute be included in protection scope of the present invention it
It is interior.
Embodiment 1
A kind of bored pile construction method, comprising the following steps:
Step 1: drilling machine pilot hole:
Processing drilling place substrate surface: field is flat, removes earth's surface rubbish and barrier, encounters the barrier that can not be drilled, uses
After excavator is dug out, plain earthen backfill is simultaneously tamped；
By the design drawing requirement of stake position, survey sets stake position and marks, and draws a radius 45cm's with lime centered on stake position
Circle after drilling machine is in place, keeps drilling machine steady, pilot hole, pilot hole are opened in Spiral digging machine apex point align piles position center after errorless to the review of stake position
Depth is 7m, is selected according to live base's situation, for the base of relatively soft or easy collapse hole, selects deeper pilot hole deep
Degree.
Pilot hole can overcome the influence of shallow-layer barrier.Engineering driller can effectively overcome the influence of barrier, can not bore
The barrier worn should be dug out using excavator, prevent the crimping damage to casing；
Pilot hole position can be such that casing is accurately positioned, and prevent casing deviation from causing pile position deviation larger；
Pilot hole section can make casing smoothly enter hole, reduce the frictional force of casing decentralization, guarantee that casing enters the stability in hole, reduce
Casing is inserted into the time, guarantees that casing is smoothly inserted into.
Step 2: casing under vibration hammer,
Steel pile casting is made of the helix tube of 12mm, and shear blade is arranged in casing bottom, using high intensity between more piece casing and casing
Bolt is attached, and strengthening measure is taken in casing coupling part, and casing uses gripper, carries out downward vibration-sunk.
The casing includes connection section 21 and coxopodite 22, and the upper end of the cylinder coxopodite is connecting pin, and lower end is provided with bottom
Sword, the shear blade are set to cylinder inboard wall；Connection section top and bottom are connecting pin, and the connecting pin is provided with reinforcement
Section 23, the connection section and coxopodite upper end are provided with multiple holes for hoist 5, and connection section lower end is provided with multiple connecting holes,
The hole for hoist 4 and connection hole site match setting, are provided with mantle fiber on the hole for hoist 4 and connecting hole hole wall；It is described
Detachable is provided with bolt 7 in connecting hole, and the lower section of section insertion is internal on the cylinder, and described two cylinders pass through high-strength bolt
Detachable connection.
Cylinder coxopodite bottom is provided with shear blade 3, and the shear blade is set to cylinder inboard wall, can reduce the resistance of casing decentralization
Power guarantees that casing is smoothly transferred in place.
Casing can be recycled, and energy conservation reduces cost.
The connection detachable by high-strength bolt of described two cylinders not only reduces resistance when casing is extracted, also
The damage to bored concrete pile surrounding soil can be reduced, so that the scope of application of the cast-in-situ bored pile casing is wider.
It is convenient and efficient using the connection that high-strength bolt is detachable between casing and casing.If using welding, welding
Time is longer, influences construction speed.
Deviational survey hole 8 is additionally provided in the cylinder, the deviational survey hole is axially arranged along cylinder, is provided in the deviational survey hole
Clinometer probe, clinometer probe connect inclinometer.Guarantee lower casing and pull out the verticality of casing during casing, prevents casing
Verticality variation causes pile body locally folder mud.
Step 3: drilling machine pore-forming；
After casing reaches predetermined depth, pore-forming drill repositions, and bit diameter uses 780mm, applies and is drilled into design stake bottom absolute altitude,
Dregs in hole is dug out outside hole, first time borehole cleaning；
Gyroscope is provided on the mast of the drilling machine, the gyroscope is located above the drilling rod of drilling machine, and the drilling rod 11 is set
Assembling structure, including outer bar 31 and the interior bar being socketed in outer bar 32, the outer bar and interior bar are concentric, the inner wall setting of the outer bar
There is the axial track 33 slided up and down for interior bar；The boring bar head of the drilling machine is provided with drill bit, sets at the top of the drill bit
It is equipped with circumferential churning driven tooth 16；The boring bar head surrounding is setting up and down, and there are two positioning ring 12, described two positioning ring sizes
It unanimously and is parallel to each other, the drilling rod is located inside two positioning rings.
The quantity of the interior bar of the drilling rod is one or more.
With upper and lower two positioning annulus, guarantee the stability and verticality of drilling；Churning driven tooth enhances the pressure of drilling,
Conducive to breaking ground, it is conducive to stability.
Step 4: decentralization steel reinforcement cage, concrete perfusion,
Steel reinforcement cage is transferred, carries out bottom hole two clearly with gas lift reverse circulation after steel reinforcement cage decentralization, detection sediment meets design requirement
Afterwards, filling concrete is carried out, perfusion is carried out continuously, and midway idle hours is no more than 30min, mixed to guarantee to extract pile crown after casing
Solidifying soil property amount, the superfilled 1m of concrete；
Step 5: vibration hammer pulls out casing, after the completion of filling concrete, casing merogenesis is extracted into stake holes using vibration hammer equipment,
Casing is recycled, and final section casing is interior after having filled concrete 1 hour to be pulled up, and in withdrawal process in timely monitoring holes
Concrete is replenished in time when concrete liquid level is lower than stake top absolute altitude in concrete liquid level.
It pulls out casing key control point: during pulling out casing, casing being lifted by hole for hoist, vibration hammer is at the uniform velocity operated, prevented
Excessive velocities are promoted, causes concrete density to decline, influences pile quality.Casing withdrawal process keeps vertical, in constructor
Commander member is lower to complete, and guarantees casing verticality, prevents the variation of casing verticality from causing pile body locally folder mud.To guarantee pile crown matter
Amount when pulling out casing final section, checks casing inner concrete absolute altitude, when concrete-pile top mark is high inadequate, mud in casing is clear
Reason is clean, carries out secondary pouring.
The filling concrete is realized using automotive pump combination underwater concrete construction technique.
Borehole cleaning sediment requirement twice are as follows: the mud for being discharged or extracting out in hole is not more than 1 without 2~3mm particle, mud balance
.1, sand factor is less than 2%, 17~20s of viscosity.
This construction technology of cast-in-place bored, between making steel pile casting overcome each soil layer using Special rocking, vibratory equipment between casing
Frictional force, the unfavorable stratum for passing through casing in machine drilling construction utilizes drilling until reach stable bearing course at pile end
Equipment empties dregs in casing, guarantees the construction technology of bored pile piling.
This method is suitable for the cast-in-situ bored pile that diameter is 600mm-2500mm, and drill-pouring pile length should not be greater than 40m
Pile foundation engineering.
It is higher suitable for level of ground water, easy collapse hole, using conventional mud and chemical slurry can not pore-forming stratum, no mud
Pollution.Such as cobble soil layer, dust stone soil layer, layer of sand, can carry out Pile.
Embodiment 2
A kind of bored pile construction method, comprising the following steps:
Step 1: drilling machine pilot hole:
Processing drilling place substrate surface: field is flat, removes earth's surface rubbish and barrier, encounters the barrier that can not be drilled, uses
After excavator is dug out, plain earthen backfill is simultaneously tamped；
By the design drawing requirement of stake position, survey sets stake position and marks, and draws a radius 45cm's with lime centered on stake position
Circle after drilling machine is in place, keeps drilling machine steady, pilot hole, pilot hole are opened in Spiral digging machine apex point align piles position center after errorless to the review of stake position
Depth is 6m.
Pilot hole can overcome the influence of shallow-layer barrier.Engineering driller can effectively overcome the influence of barrier, can not bore
The barrier worn should be dug out using excavator, prevent the crimping damage to casing；
Pilot hole position can be such that casing is accurately positioned, and prevent casing deviation from causing pile position deviation larger；
Pilot hole section can make casing smoothly enter hole, reduce the frictional force of casing decentralization, guarantee that casing enters the stability in hole, reduce
Casing is inserted into the time, guarantees that casing is smoothly inserted into.
Step 2: casing under vibration hammer,
Steel pile casting is made of 14mm helix tube, and shear blade is arranged in casing bottom, using high-intensitive spiral shell between more piece casing and casing
Bolt is attached, and strengthening measure is taken in casing coupling part, and casing uses gripper, carries out downward vibration-sunk.
The casing includes cylinder 1, and top sword 2 is provided at the top of the cylinder, and the cylinder body bottom is provided with shear blade 3, institute
It states top sword 2 and is set to cylinder body outer wall, the shear blade 3 is set to cylinder inboard wall, and shear blade can reduce the resistance of casing decentralization, guarantees shield
Cylinder smoothly in place, push up sword and shear blade shape match, guarantee the precision and tightness of the connection of more piece casing by decentralization.
The cylinder top is provided with multiple holes for hoist 4, and the cylinder lower part is provided with multiple connecting holes 5, the lifting
Hole 4 and 5 position of connecting hole match setting, and detachable setting bolt 7 and nut in the connecting hole and hole for hoist are described
It has been bolted connecting rod 6, the connection detachable by connecting rod 6 of described two cylinders.
Casing can be recycled, and energy conservation reduces cost.
Connecting rod is small in size, not only reduces resistance when casing is extracted, moreover it is possible to the damage to bored concrete pile surrounding soil is reduced,
So that the scope of application of the cast-in-situ bored pile casing is wider.
It is attached between casing and casing using the bolt and nut of stiffness.If weld interval is longer using welding,
Influence construction speed.
Deviational survey hole 8 is additionally provided in the cylinder 1, the deviational survey hole is axially arranged along cylinder, is arranged in the deviational survey hole
There is clinometer probe, clinometer probe connects inclinometer.Guarantee lower casing and pull out the verticality of casing during casing, prevents from protecting
Cylinder verticality variation causes pile body locally folder mud.
Step 3: drilling machine pore-forming；
After casing reaches predetermined depth, pore-forming drill repositions, and bit diameter uses 780mm, applies and is drilled into design stake bottom absolute altitude,
First time borehole cleaning；
Step 4: decentralization steel reinforcement cage, concrete perfusion,
Steel reinforcement cage is transferred, steel reinforcement cage carries out bottom hole two clearly after transferring, after detection sediment meets design requirement, carry out concrete
Perfusion, perfusion are carried out continuously, and midway idle hours is no more than 30min, the superfilled 2m of concrete；
Step 5: vibration hammer pulls out casing, after the completion of filling concrete, casing merogenesis is extracted into stake holes using vibration hammer equipment,
Casing is recycled, and final section casing is interior after having filled concrete 1 hour to be pulled up, and in withdrawal process in timely monitoring holes
Concrete is replenished in time when concrete liquid level is lower than stake top absolute altitude in concrete liquid level.
It pulls out casing key control point: during pulling out casing, casing being lifted by hole for hoist, vibration hammer is at the uniform velocity operated, prevented
Excessive velocities are promoted, causes concrete density to decline, influences pile quality.Casing withdrawal process keeps vertical, in constructor
Commander member is lower to complete, and guarantees casing verticality, prevents the variation of casing verticality from causing pile body locally folder mud.To guarantee pile crown matter
Amount when pulling out casing final section, checks casing inner concrete absolute altitude, when concrete-pile top mark is high inadequate, mud in casing is clear
Reason is clean, carries out secondary pouring.
The filling concrete is realized using automotive pump combination underwater concrete construction technique.
Borehole cleaning sediment requirement twice are as follows: the mud for being discharged or extracting out in hole is not more than 1 without 2~3mm particle, mud balance
.1, sand factor is less than 2%, 17~20s of viscosity.
This construction technology of cast-in-place bored, between making steel pile casting overcome each soil layer using Special rocking, vibratory equipment between casing
Frictional force, the unfavorable stratum for passing through casing in machine drilling construction utilizes drilling until reach stable bearing course at pile end
Equipment empties dregs in casing, guarantees the construction technology of bored pile piling.
This method is suitable for the cast-in-situ bored pile that diameter is 600mm-2500mm, and drill-pouring pile length should not be greater than 40m
Pile foundation engineering.
It is higher suitable for level of ground water, easy collapse hole, using conventional mud and chemical slurry can not pore-forming stratum, no mud
Pollution.Such as cobble soil layer, dust stone soil layer, layer of sand, can carry out Pile.
The present invention is not limited by embodiment illustrated herein, and is to fit to and principles disclosed herein and novelty
The consistent widest range of feature.
Claims (9)
1. a kind of bored pile construction method, which comprises the following steps:
Step 1: drilling machine pilot hole:
Processing drilling place substrate surface: field is flat, removes earth's surface rubbish and barrier, encounters the barrier that can not be drilled, uses
After excavator is dug out, plain earthen backfill is simultaneously tamped；
By the design drawing requirement of stake position, survey sets stake position and marks, and draws a circle with lime centered on stake position, multiple to stake position
After core is errorless, aperture, aperture depth is 6-8m；
Step 2: casing under vibration hammer,
Steel pile casting is made of the helix tube of 12mm or more, and shear blade is arranged in casing bottom, using height between more piece casing and casing
Strength bolts are attached, and strengthening measure is taken in casing coupling part, and casing uses gripper, are carried out under vibrating downwards
It is heavy；
Step 3: drilling machine pore-forming；
After casing reaches predetermined depth, pore-forming drill repositions, and dregs in hole is dug out outside hole, applies and is drilled into design stake bottom mark
Height, first time borehole cleaning；
Step 4: decentralization steel reinforcement cage, concrete perfusion,
Steel reinforcement cage is transferred, carries out bottom hole two clearly with gas lift reverse circulation after steel reinforcement cage decentralization, detection sediment meets design requirement
Afterwards, filling concrete is carried out, perfusion is carried out continuously, and midway idle hours is no more than 30min, mixed to guarantee to extract pile crown after casing
Solidifying soil property amount, the superfilled 1-2m of concrete；
Step 5: vibration hammer pulls out casing, after the completion of filling concrete, casing merogenesis is extracted into stake holes using vibration hammer equipment,
Casing is recycled, and final section casing is interior after having filled concrete 1 hour to be pulled up, and in withdrawal process in timely monitoring holes
Concrete is replenished in time when concrete liquid level is lower than stake top absolute altitude in concrete liquid level.
2. a kind of bored pile construction method according to claim 1, which is characterized in that described to pull out casing process
In, casing is lifted by hole for hoist, vibration hammer at the uniform velocity operates, and casing withdrawal process keeps vertical, when pulling out casing final section, inspection
It looks into casing inner concrete absolute altitude to clean out mud in casing when concrete-pile top mark is high inadequate, carries out secondary pouring.
3. a kind of bored pile construction method according to claim 1, which is characterized in that the filling concrete uses
Automotive pump combination underwater concrete construction technique is realized.
4. a kind of bored pile construction method according to claim 1, which is characterized in that be provided with top on the drilling machine
Spiral shell instrument, the gyroscope are located above the drilling rod of drilling machine, and the drilling rod is sleeve structure, including outer bar and are socketed in outer bar
Interior bar, the outer bar and interior bar are concentric, and the inner wall of the outer bar is provided with the axial track slided up and down for interior bar；
The boring bar head of the drilling machine is provided with drill bit, is provided with circumferential churning driven tooth at the top of the drill bit；
The boring bar head surrounding is setting up and down, and there are two positioning rings, and described two positioning rings are in the same size and are parallel to each other, institute
Drilling rod is stated inside two positioning rings.
5. a kind of bored pile construction method according to claim 4, which is characterized in that the quantity of the interior bar is one
To multiple.
6. a kind of bored pile construction method according to claim 1, which is characterized in that the casing includes connection section
And coxopodite, the upper end of the cylinder coxopodite is connecting pin, and lower end is provided with shear blade, and the shear blade is set to cylinder inboard wall；
Connection section top and bottom are connecting pin, and the connecting pin is provided with strengthening segment, the connection save and coxopodite on
End is provided with multiple holes for hoist, and connection section lower end is provided with multiple connecting holes, the hole for hoist and connection hole site phase
Matching is arranged, and is provided with mantle fiber on the hole for hoist and connecting hole hole wall；Detachable is provided with bolt in the connecting hole, institute
It is internal to state the lower section of section insertion on cylinder, the connection detachable by high-strength bolt of described two cylinders.
7. a kind of bored pile construction method according to claim 6, which is characterized in that the cylinder is suitable for geology
Unfavorable geology pore-forming under conditions of complexity, mud-less pollution.
8. a kind of bored pile construction method according to claim 7, which is characterized in that the unfavorable geology include but
It is not limited to solution cavity interlayer, rock stratum, cobble soil layer, dust layer.
9. a kind of bored pile construction method according to claim 1, which is characterized in that borehole cleaning sediment requirement twice
Are as follows: for the mud for being discharged or extracting out in hole without 2~3mm particle, mud balance is not more than 1 .1, sand factor less than 2%, viscosity 17~
20s。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910690691.5A CN110387880A (en) | 2019-07-29 | 2019-07-29 | A kind of bored pile construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910690691.5A CN110387880A (en) | 2019-07-29 | 2019-07-29 | A kind of bored pile construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110387880A true CN110387880A (en) | 2019-10-29 |
Family
ID=68287758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910690691.5A Pending CN110387880A (en) | 2019-07-29 | 2019-07-29 | A kind of bored pile construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110387880A (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952533A (en) * | 2019-11-26 | 2020-04-03 | 浙江大学城市学院 | Underwater anti-slip bored pile foundation and construction method thereof |
| 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 |
| 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 |
| CN111455992A (en) * | 2020-03-20 | 2020-07-28 | 中电建十一局工程有限公司 | Full-casing follow-up construction method for rotary drilling rig |
| CN111501737A (en) * | 2020-04-16 | 2020-08-07 | 中国电建集团华东勘测设计研究院有限公司 | Reinforced cast-in-situ bored pile and construction method thereof |
| CN111877322A (en) * | 2020-05-26 | 2020-11-03 | 中建八局天津建设工程有限公司 | Construction method of bored concrete cast-in-place pile |
| CN112268158A (en) * | 2020-11-06 | 2021-01-26 | 江苏恒达工程检测有限公司 | Telescopic safety protection cylinder for pipeline repair |
| CN112323782A (en) * | 2020-11-16 | 2021-02-05 | 安徽省新路建设工程集团有限责任公司 | Construction method and structure for forming full casing cast-in-situ bored pile |
| CN112482363A (en) * | 2020-11-15 | 2021-03-12 | 郑州铁路工程有限公司 | Method for processing underground pipeline in urban pile foundation construction |
| CN112663600A (en) * | 2020-12-14 | 2021-04-16 | 中铁十六局集团第一工程有限公司 | Construction method of cast-in-situ bored pile for water-rich sandy stratum |
| CN113309083A (en) * | 2021-05-29 | 2021-08-27 | 中核华辰建筑工程有限公司 | Construction method of large-diameter overlong cast-in-place pile |
| CN113914309A (en) * | 2021-09-29 | 2022-01-11 | 中国建筑第六工程局有限公司 | Laminated karst cave stratum pile foundation construction method |
| CN114673148A (en) * | 2022-04-22 | 2022-06-28 | 兰州石化职业技术学院 | Spliced variable-diameter rigid pile casing compaction pile and construction method thereof |
| CN114960641A (en) * | 2022-05-30 | 2022-08-30 | 中铁二十三局集团有限公司 | Foundation pile construction method based on steel casing |
| CN115030170A (en) * | 2022-06-06 | 2022-09-09 | 中铁十二局集团有限公司 | Bored pile collapsed hole backfilling construction method and backfilling auxiliary device |
| CN115045272A (en) * | 2022-06-23 | 2022-09-13 | 中冶建工集团有限公司 | Novel steel sleeve connecting structure and construction method |
| CN115247419A (en) * | 2021-04-28 | 2022-10-28 | 广州市建筑科学研究院有限公司 | Full-length steel casing concrete cast-in-place pile construction equipment and method without slurry discharge |
| CN116516957A (en) * | 2023-07-04 | 2023-08-01 | 中交第一航务工程局有限公司 | Construction method of detachable soft foundation area pile foundation steel casing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609346A (en) * | 2003-10-20 | 2005-04-27 | 胡柏英 | Superposed pile structure and construction method |
| CN201513117U (en) * | 2009-05-19 | 2010-06-23 | 李征 | Rotary drilling rig used for cast-in-site cylindrical pile |
| CN103485336A (en) * | 2013-09-30 | 2014-01-01 | 中铁二十局集团有限公司 | Drilling pile drilling construction method of bead-type karst area |
| CN106049491A (en) * | 2016-08-03 | 2016-10-26 | 江苏建筑职业技术学院 | Non-dismantling prefabricated concrete pile protecting die plate and construction method |
| CN108166485A (en) * | 2017-12-29 | 2018-06-15 | 上海市建工设计研究总院有限公司 | Bored pile by churning drive cast-in-place pile construction method |
| CN208072397U (en) * | 2018-01-19 | 2018-11-09 | 新疆北新路桥集团股份有限公司 | A kind of casing |
-
2019
- 2019-07-29 CN CN201910690691.5A patent/CN110387880A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609346A (en) * | 2003-10-20 | 2005-04-27 | 胡柏英 | Superposed pile structure and construction method |
| CN201513117U (en) * | 2009-05-19 | 2010-06-23 | 李征 | Rotary drilling rig used for cast-in-site cylindrical pile |
| CN103485336A (en) * | 2013-09-30 | 2014-01-01 | 中铁二十局集团有限公司 | Drilling pile drilling construction method of bead-type karst area |
| CN106049491A (en) * | 2016-08-03 | 2016-10-26 | 江苏建筑职业技术学院 | Non-dismantling prefabricated concrete pile protecting die plate and construction method |
| CN108166485A (en) * | 2017-12-29 | 2018-06-15 | 上海市建工设计研究总院有限公司 | Bored pile by churning drive cast-in-place pile construction method |
| CN208072397U (en) * | 2018-01-19 | 2018-11-09 | 新疆北新路桥集团股份有限公司 | A kind of casing |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952533A (en) * | 2019-11-26 | 2020-04-03 | 浙江大学城市学院 | Underwater anti-slip bored pile foundation and construction method thereof |
| 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 |
| 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 |
| CN111455992A (en) * | 2020-03-20 | 2020-07-28 | 中电建十一局工程有限公司 | Full-casing follow-up construction method for rotary drilling rig |
| CN111501737B (en) * | 2020-04-16 | 2022-03-18 | 中国电建集团华东勘测设计研究院有限公司 | Reinforced cast-in-situ bored pile and construction method thereof |
| CN111501737A (en) * | 2020-04-16 | 2020-08-07 | 中国电建集团华东勘测设计研究院有限公司 | Reinforced cast-in-situ bored pile and construction method thereof |
| CN111877322A (en) * | 2020-05-26 | 2020-11-03 | 中建八局天津建设工程有限公司 | Construction method of bored concrete cast-in-place pile |
| CN112268158A (en) * | 2020-11-06 | 2021-01-26 | 江苏恒达工程检测有限公司 | Telescopic safety protection cylinder for pipeline repair |
| CN112482363A (en) * | 2020-11-15 | 2021-03-12 | 郑州铁路工程有限公司 | Method for processing underground pipeline in urban pile foundation construction |
| CN112323782A (en) * | 2020-11-16 | 2021-02-05 | 安徽省新路建设工程集团有限责任公司 | Construction method and structure for forming full casing cast-in-situ bored pile |
| CN112663600A (en) * | 2020-12-14 | 2021-04-16 | 中铁十六局集团第一工程有限公司 | Construction method of cast-in-situ bored pile for water-rich sandy stratum |
| CN115247419A (en) * | 2021-04-28 | 2022-10-28 | 广州市建筑科学研究院有限公司 | Full-length steel casing concrete cast-in-place pile construction equipment and method without slurry discharge |
| CN113309083A (en) * | 2021-05-29 | 2021-08-27 | 中核华辰建筑工程有限公司 | Construction method of large-diameter overlong cast-in-place pile |
| CN113914309A (en) * | 2021-09-29 | 2022-01-11 | 中国建筑第六工程局有限公司 | Laminated karst cave stratum pile foundation construction method |
| CN114673148A (en) * | 2022-04-22 | 2022-06-28 | 兰州石化职业技术学院 | Spliced variable-diameter rigid pile casing compaction pile and construction method thereof |
| CN114960641A (en) * | 2022-05-30 | 2022-08-30 | 中铁二十三局集团有限公司 | Foundation pile construction method based on steel casing |
| CN115030170A (en) * | 2022-06-06 | 2022-09-09 | 中铁十二局集团有限公司 | Bored pile collapsed hole backfilling construction method and backfilling auxiliary device |
| CN115030170B (en) * | 2022-06-06 | 2023-12-12 | 中铁十二局集团有限公司 | Hole collapse backfill construction method and backfill auxiliary device for bored pile |
| CN115045272A (en) * | 2022-06-23 | 2022-09-13 | 中冶建工集团有限公司 | Novel steel sleeve connecting structure and construction method |
| CN116516957A (en) * | 2023-07-04 | 2023-08-01 | 中交第一航务工程局有限公司 | Construction method of detachable soft foundation area pile foundation steel casing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110387880A (en) | A kind of bored pile construction method | |
| CN110424381A (en) | A kind of process for rotary digging drilling hole stake | |
| CN105275381B (en) | Impact drill drilling construction method in rich water pebble layer | |
| WO2018210019A1 (en) | Pile formation method for down-the-hole impact rotary jet composite piles | |
| CN113445498A (en) | Construction process of karst hole pile foundation in complex geology | |
| CN106759288A (en) | One kind building bored pile construction method | |
| CN106761474B (en) | A kind of the full-sleeve engineering method steel sleeve and its construction method of the soil that can actively muck haulage | |
| CN110468833A (en) | Drilled grouting piles under water constructing device and its application method for cruiseway | |
| CN101638891A (en) | Construction method of all casing precessing isolation pile | |
| CN109488202A (en) | A kind of gravel rock stratum pile foundation drilling construction engineering method containing gravel-boulder bed | |
| CN108589707A (en) | A kind of full-sleeve long screw auger and churning driven combined type construction | |
| CN106930276A (en) | The deep hole blasting of rotary digging bored concrete pile and the construction method of conduit rotary digging removing obstacles | |
| CN105064336A (en) | Hole forming construction method for three-section type pedestal pile | |
| CN104047542A (en) | Pipe hammer system of percussion drill for rock-socketed inclined pile and impact construction method of rock-socketed inclined pile | |
| CN110984133A (en) | Construction method for foundation of deep-water shallow-covering-layer trestle | |
| CN105155519A (en) | Rotary-excavating under-reamed bored pile constructing method | |
| CN104532853A (en) | Deep foundation pit supporting method and system characterized by steel reinforced cement-soil piles, bolts easy to detach and automatic monitoring and early warning | |
| CN113323584A (en) | Drilling method of large vibrating long spiral drilling machine | |
| CN109723075A (en) | A kind of prefabrication and assembly construction controllable type open caisson construction method | |
| CN106677166A (en) | Flow construction method for forming cast-in-place bored pile for gravel-decomposed rock stratum in double-machine combined mode | |
| CN104947664A (en) | Thick stone sea-filling layer prestressing force high-strength concrete square pile construction method | |
| CN105926592A (en) | Construction method of hole drilling pile | |
| CN109083181A (en) | Collapsible loess super long large diameter pile foundation churning driven half bore mud wet process pore-forming technique | |
| CN110331936B (en) | Combined drilling bottom-expanding pile-planting construction method | |
| CN210530738U (en) | Pile system is planted in drilling in groups |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191029 |
|
| RJ01 | Rejection of invention patent application after publication |