CN106759288A - One kind building bored pile construction method - Google Patents
One kind building bored pile construction method Download PDFInfo
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- CN106759288A CN106759288A CN201611070098.3A CN201611070098A CN106759288A CN 106759288 A CN106759288 A CN 106759288A CN 201611070098 A CN201611070098 A CN 201611070098A CN 106759288 A CN106759288 A CN 106759288A
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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
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- 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
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- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses one kind building bored pile construction method, including probing in advance, cleaning, embedded casing, prepare the circulation of mud, machine drilling and mud slag tap, reaming, borehole cleaning, makings and placement steel reinforcement cage and casting concrete；Probing in advance of the invention, geological condition can be known before bored concrete pile, determine whether to meet execution conditions, be more beneficial for determining drilling machine type in advance, improve efficiency of construction and construction quality, drilling machine and mud components and index are selected according to geological state, efficiency of construction is very high, saves substantial amounts of manpower, and construction safety, steel reinforcement cage can increase the strength and stability of steel reinforcement cage using the hog frame and concrete bed of triangle；Therefore building bored pile construction method of the invention has the advantages that safe, environmentally friendly, efficiency high and applied widely, building cast-in-situ bored pile of the invention has the advantages that supporting force is strong and quality is high.
Description
Technical field
The invention belongs to building pile foundation technical field of construction, more particularly to a kind of bored pile construction of building pile foundation
Method.
Background technology
Bored concrete pile is the directly perforate on designed stake position, and its section is circle, places steel reinforcement cage after pore-forming in hole,
Concrete perfusion is formed.Bored concrete pile obtains relatively broad application in construction.According to the difference of pore-forming technique, drilling can be divided into
Bored concrete pile, driven cast-in-place pile, manually digging hole filling pile, explosive expansion bored concrete pile etc..Cast-in-situ bored pile to refer to and get out stake using drilling machine
Hole, first hangs steel reinforcement cage in hole, and in hole casting concrete stake.Without friction, without squeezing soil during due to construction,
Noise is small, be suitable for the advantages of City Building City Regions use, and is increasingly widely applied.
The stake holes of building bored concrete pile, conventional method is to use hand digging, this kind of stake due to its stress performance reliability, no
Large-scale plant is needed, construction manipulation process is simple, can directly check a bed rock soil layer situation, and bearing capacity of single pile is high, without environment
Pollution, so more universal in various regions application.But, such stake holes exists following not enough：Labour intensity is larger in borehole, single pile
Speed of application is slower, and especially security is poor, easily occur landslide etc. dangerous situation, when may have in soil layer humus thing produce
When gas escape is in hole, stake holes bottom can also deposit a large amount of toxic gases, and potential safety hazard is brought to construction safety.
For problem above, the present inventor designs a kind of new building bored pile construction method.
The content of the invention
The present invention solves the technical problem of a kind of building bored pile construction method is provided, with security
Height, strong, environmentally friendly, applied widely supporting force, efficiency high and quality it is high the advantages of.
In order to solve the above technical problems, one aspect of the present invention is：A kind of building cast-in-situ bored pile is provided
Construction method, is carried out in accordance with the following steps：
Step one, in advance probing：Determine bored concrete pile central point, visited in bored concrete pile center with ground investigation machine and take sample, and examined
Survey, wherein the depth depth 5m of support rock stratum of the depth of probing at least than designing in advance；
Step 2, cleaning：Remove debris, the ground in smooth and compacting bored concrete pile working range, with the perfusion of step one
Pile center's point determines bored concrete pile circumference；
Step 3, embedded casing：Topsoil is cut out, with mill drilling machine borehole, casing is imbedded, inserted on the outside of casing viscous
Soil and compaction in layers, the diameter in hole should 0.8-1m bigger than casing external diameter, the wherein depth of burying is more than or equal to 1m, sand in clay
In be more than or equal to 1.5m；
Step 4, prepare mud；
The circulation of step 5, machine drilling and mud is slagged tap：Drilling machine is installed, the mud is supplemented in time in boring procedure
Slurry, general sand hard alloy steel bit, rotating speed 40-80r/min, rotating speed is suitably slowed down in harder or inhomogeneous formation, is turned
Speed is 20-60r/min；
Step 6, reaming:Reverse circulation drilling machine installs reaming bit, in bottom hole reaming, reaming metapore bottom circumferentially shape；
Step 7, borehole cleaning：Using water law is blown, water pipe will be blown and transfer to a bottom, arranged stake bottom sewage and sludge using air pressure
Go out to sedimentation basin, filtration cycle is utilized, until the water sample of discharge meets standard；
Step 8, making and placement steel reinforcement cage：Before drilling machine pore-forming, standard compliant steel reinforcement cage should be in advance made, bored
Laid in time after the machine pore-forming of hole；
Step 9, casting concrete：Decentralization tremie, before filling stake, first uses the mud dredging conduit, mud viscosity to be
17-18s, sand factor is 4-8%, in case catheter blockage；Concrete bucket is transported to workbench with crawler crane, starts to pour
Concrete is built, casting process compactly, should be carried out continuously, forbid midway to stop work, it should be noted that observation conduit inner concrete and hole
Interior fluctuation in stage situation, timely measured hole inner concrete apical side height, the lifting and dismounting of correct commander's conduit, when conduit is lifted
Axis vertical and position should be kept placed in the middle, stepped up, it is ensured that the height of concrete surface is than casing in casting process and leads
The height of pipe is higher by least 1m, and cast terminates, and completes the drilled pile pouring construction.
In order to solve the above technical problems, the further technical scheme that the present invention is used is：
Steel reinforcement cage described in step 8 includes ring-shaped stirrup and cage bar, the cage bar per 12m at least with 5 ring-shaped stirrups come
Support, the bottom of the cage bar of the steel reinforcement cage can be provided with cup dolly, and the cup dolly is the thick concrete layers of at least 75mm；
In the steel reinforcement cage an interim hog frame of dismountable triangle is installed additional every 3-4m.
Further say, the depth of the reaming described in step 6 is 0.5-0.8m；
Further say, in the slurrying described in step 4, in clay during pore-forming, filled water, with original soil pulping；
In other soil layers during pore-forming, mud is prepared from the clay or bentonite of high-ductility (plasticity index Ip >=17), mud density
It is all 1.1-1.3g/cm3；The Con trolling index of mud is viscosity 18-22s, sand factor≤8%, colloidity >=90%.
Further say, great Shi is run into the machine drilling described in step 5, if great Shi is apart from the distance on ground<4m, then
Great Shi is smashed and pressed from both sides away using crawler mounted excavator and air inflating machine for dismantling tyre；If great Shi is followed apart from the distance >=4m on ground using counter
Ring rock drill installs diamond bit or great Shi is smashed and pressed from both sides away by rock bit；
If the rock stratum face for running into is inclined-plane inclined-plane hammer out can be further continued for drilling or by concrete by inclined-plane using sash weight
Fill and lead up, then install diamond bit or rock bit with reverse circulation drilling machine is further continued for drilling by inclined-plane leveling.
Further say, casing described in step 3 is made of 4-8mm steel plates, the internal diameter of the casing is bigger than bit diameter
100-200mm, top surface distance above ground level is 0.4-0.6m, and top opens up 1-2 extravasating hole, the center line of the casing and
Centerline deviation≤the 50mm of the bored concrete pile.
Further say, when burying casing described in step 3, if a casing length is inadequate, casing need to be connected, protect
The connected mode of cylinder is screw connection or electric welding connection；During the electric welding connection, the joint face between casing and casing should burn and be
Inclined-plane, and welded entirely using burning.
Further say, in the machine drilling described in step 5, the drilling machine that Soft Soil Layer is used is rotary digging drilling machine,
The drilling machine that hard stratum is used is thrust borer
The beneficial effects of the invention are as follows：The present invention at least has advantages below：
First, probing in advance, can know geological condition, it is determined whether meet execution conditions before bored concrete pile, be more beneficial for
Drilling machine type is determined in advance, improves efficiency of construction and construction quality；
When the 2nd, preparing mud, according to different soil property situations, different mud are prepared, can preferably stablize casing, risen
Acted on to sand, casting is preferably taken；
3rd, reaming bit is installed using reverse circulation drilling machine, in bottom hole reaming, compared to traditional artificial reaming, security
Good, efficiency high, quality are high；
When the 4th, preparing steel reinforcement cage, using the hog frame and concrete bed of triangle, the intensity of steel reinforcement cage and steady can be increased
It is qualitative, and then ensure construction quality；
5th, suitable drilling machine is selected according to geological condition, efficiency of construction is very high, saves substantial amounts of manpower, Er Qieshi
Work safety.
Described above is only the general introduction of technical solution of the present invention, in order to better understand technological means of the invention,
And can be practiced according to the content of specification, described in detail as after with presently preferred embodiments of the present invention below.
Specific embodiment
Specific embodiment of the invention is illustrated below by way of particular specific embodiment, those skilled in the art can be by this
Content disclosed in specification understands advantages of the present invention and effect easily.The present invention can also other different modes give
Implement, i.e. without departing substantially from different modifications under the scope of disclosed, being given and changed.
Embodiment：One kind building bored pile construction method, is carried out in accordance with the following steps：
Step one, in advance probing：Determine bored concrete pile central point, visited in bored concrete pile center with ground investigation machine and take sample, and examined
Survey, wherein the depth depth 5m of support rock stratum of the depth of probing at least than designing in advance；
Step 2, cleaning：Remove debris, the ground in smooth and compacting bored concrete pile working range, with the perfusion of step one
Pile center's point determines bored concrete pile circumference；
Step 3, embedded casing：Topsoil is cut out, with mill drilling machine borehole, casing is imbedded, inserted on the outside of casing viscous
Soil and compaction in layers, the diameter in hole should 0.8-1m bigger than casing external diameter, the wherein depth of burying is more than or equal to 1m, sand in clay
In be more than or equal to 1.5m；
Step 4, prepare mud；
The circulation of step 5, machine drilling and mud is slagged tap：Drilling machine is installed, the mud is supplemented in time in boring procedure
Slurry, general sand hard alloy steel bit, rotating speed 40-80r/min, rotating speed is suitably slowed down in harder or inhomogeneous formation, is turned
Speed is 20-60r/min；
Step 6, reaming:Reverse circulation drilling machine installs reaming bit, in bottom hole reaming, reaming metapore bottom circumferentially shape；
Step 7, borehole cleaning：Using water law is blown, water pipe will be blown and transfer to a bottom, arranged stake bottom sewage and sludge using air pressure
Go out to sedimentation basin, filtration cycle is utilized, until the water sample of discharge meets standard；
Step 8, making and placement steel reinforcement cage：Before drilling machine pore-forming, standard compliant steel reinforcement cage should be in advance made, bored
Laid in time after the machine pore-forming of hole；
Step 9, casting concrete：Decentralization tremie, before filling stake, first uses the mud dredging conduit, mud viscosity to be
17-18s, sand factor is 4-8%, in case catheter blockage；Concrete bucket is transported to workbench with crawler crane, starts to pour
Concrete is built, casting process compactly, should be carried out continuously, forbid midway to stop work, it should be noted that observation conduit inner concrete and hole
Interior fluctuation in stage situation, timely measured hole inner concrete apical side height, the lifting and dismounting of correct commander's conduit, when conduit is lifted
Axis vertical and position should be kept placed in the middle, stepped up, it is ensured that the height of concrete surface is than casing in casting process and leads
The height of pipe is higher by least 1m, and cast terminates, and completes the drilled pile pouring construction.
Steel reinforcement cage described in step 8 includes ring-shaped stirrup and cage bar, the cage bar per 12m at least with 5 ring-shaped stirrups come
Support, the bottom of the cage bar of the steel reinforcement cage can be provided with cup dolly, and the cup dolly is the thick concrete layers of at least 75mm；
In the steel reinforcement cage an interim hog frame of dismountable triangle is installed additional every 3-4m.
The depth of the reaming described in step 6 is 0.5-0.8m；
In slurrying described in step 4, in clay during pore-forming, filled water, with original soil pulping；In other soil layers
During middle pore-forming, mud is prepared from the clay or bentonite of high-ductility (plasticity index Ip >=17), and mud density is all 1.1-
1.3g/cm3；The Con trolling index of mud is viscosity 18-22s, sand factor≤8%, colloidity >=90%.
Great Shi is run into machine drilling described in step 5, if great Shi is apart from the distance on ground<4m, then dug using crawler type
Great Shi is smashed and pressed from both sides away by native machine and air inflating machine for dismantling tyre；If great Shi is installed apart from the distance >=4m on ground using reacting cycle rock drill
Great Shi is smashed and pressed from both sides away by diamond bit or rock bit；
If the rock stratum face for running into is inclined-plane inclined-plane hammer out can be further continued for drilling or by concrete by inclined-plane using sash weight
Fill and lead up, then install diamond bit or rock bit with reverse circulation drilling machine is further continued for drilling by inclined-plane leveling.
Casing described in step 3 is made of 4-8mm steel plates, the internal diameter 100-200mm bigger than bit diameter of the casing, top
Face distance above ground level is 0.4-0.6m, and top opens up 1-2 extravasating hole, the center line of the casing and the bored concrete pile
Centerline deviation≤50mm.
When burying casing described in step 3, if a casing length is inadequate, casing need to be connected, the connected mode of casing
It is screw connection or electric welding connection；During the electric welding connection, it is inclined-plane that the joint face between casing and casing should burn, and using burning
Full weldering.
In machine drilling described in step 5, the drilling machine that Soft Soil Layer is used is rotary digging drilling machine, and hard stratum is used
The drilling machine be thrust borer.
The a kind of of the present embodiment builds bored pile construction method, including probing in advance, cleaning, embedded casing, preparation
Mud, machine drilling and mud circulation slag tap, reaming, borehole cleaning, makings and placement steel reinforcement cage and casting concrete；It is of the invention advance
Probing, can know geological condition, it is determined whether meet execution conditions before bored concrete pile, be more beneficial for determining drilling machine class in advance
Type, improves efficiency of construction and construction quality, and drilling machine and mud components and index are selected according to geological state, and efficiency of construction is very
Height, saves substantial amounts of manpower, and construction safety, and steel reinforcement cage can be increased using the hog frame and concrete bed of triangle
The strength and stability of steel reinforcement cage；Therefore building bored pile construction method of the invention has safe, environmentally friendly, efficiency high
With advantage applied widely, building cast-in-situ bored pile of the invention has the advantages that supporting force by force and quality is high.
Embodiments of the invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
The equivalent structure that bright specification is made, or other related technical fields are directly or indirectly used in, similarly it is included in this hair
In bright scope of patent protection.
Claims (8)
- It is 1. a kind of to build bored pile construction method, it is characterised in that：Carry out in accordance with the following steps：Step one, in advance probing：Determine bored concrete pile central point, visited in bored concrete pile center with ground investigation machine and take sample, and detect, its In in advance probing depth at least than design support rock stratum depth depth 5m；Step 2, cleaning：Remove debris, the ground in smooth and compacting bored concrete pile working range, with the bored concrete pile of step one Heart point determines bored concrete pile circumference；Step 3, embedded casing：Topsoil is cut out, with mill drilling machine borehole, casing is imbedded, clay is inserted on the outside of casing simultaneously Compaction in layers, the diameter in hole should 0.8-1m bigger than casing external diameter, the wherein depth of burying is more than or equal to 1m in clay, big in sand In equal to 1.5m；Step 4, prepare mud；The circulation of step 5, machine drilling and mud is slagged tap：Drilling machine is installed, the mud, one is supplemented in time in boring procedure As sand hard alloy steel bit, rotating speed 40-80r/min, rotating speed is suitably slowed down in harder or inhomogeneous formation, and rotating speed is 20-60r/min；Step 6, reaming:Reverse circulation drilling machine installs reaming bit, in bottom hole reaming, reaming metapore bottom circumferentially shape；Step 7, borehole cleaning：Using water law is blown, water pipe will be blown and transfer to a bottom, be expelled to stake bottom sewage and sludge using air pressure Sedimentation basin, filtration cycle is utilized, until the water sample of discharge meets standard；Step 8, making and placement steel reinforcement cage：Before drilling machine pore-forming, standard compliant steel reinforcement cage, drilling machine should be in advance made Laid in time after pore-forming；Step 9, casting concrete：Decentralization tremie, before filling stake, first uses mud dredging conduit, and mud viscosity is 17- 18s, sand factor is 4-8%, in case catheter blockage；Concrete bucket is transported to workbench with crawler crane, starts to pour Concrete, casting process compactly, should be carried out continuously, forbid midway to stop work, it should be noted that in observation conduit inner concrete and hole Fluctuation in stage situation, timely measured hole inner concrete apical side height, the lifting and dismounting of correct commander's conduit should when conduit is lifted Keep axis vertical and position placed in the middle, step up, it is ensured that the height of concrete surface is than casing and conduit in casting process Height be higher by least 1m, cast terminates, and completes the drilled pile pouring construction.
- 2. one kind according to claim 1 builds bored pile construction method, it is characterised in that：Described in step 8 Steel reinforcement cage includes ring-shaped stirrup and cage bar, and the cage bar per 12m is at least with 5 ring-shaped stirrups come support, the cage bar of the steel reinforcement cage Bottom can be provided with cup dolly, the cup dolly is the thick concrete layers of at least 75mm；Every 3-4m in the steel reinforcement cage Install an interim hog frame of dismountable triangle additional.
- 3. one kind according to claim 1 builds bored pile construction method, it is characterised in that：Expansion described in step 6 The depth in hole is 0.5-0.8m.
- 4. one kind according to claim 1 builds bored pile construction method, it is characterised in that：Mud described in step 4 In prepared by slurry, in clay during pore-forming, filled water, with original soil pulping；In other soil layers during pore-forming, mud selects high-ductility Prepared by the clay or bentonite of (plasticity index Ip >=17), mud density is all 1.1-1.3g/cm3；The Con trolling index of mud is Viscosity 18-22s, sand factor≤8%, colloidity >=90%.
- 5. one kind according to claim 1 builds bored pile construction method, it is characterised in that：Machine described in step 5 Great Shi is run into tool drilling, if great Shi is apart from the distance on ground<4m, then smashed great Shi using crawler mounted excavator and air inflating machine for dismantling tyre And press from both sides；If great Shi installs diamond bit or rock bit will apart from the distance >=4m on ground using reacting cycle rock drill Great Shi is smashed and pressed from both sides away；If inclined-plane hammer out can be further continued for drilling or be filled and led up inclined-plane by concrete by the rock stratum face for running into for inclined-plane using sash weight, Then diamond bit or rock bit are installed with reverse circulation drilling machine and inclined-plane leveling is further continued for drilling.
- 6. one kind according to claim 1 builds bored pile construction method, it is characterised in that：Casing described in step 3 It is made of 4-8mm steel plates, the internal diameter 100-200mm bigger than bit diameter of the casing, top surface distance above ground level is 0.4- 0.6m, top opens up 1-2 extravasating hole, the centerline deviation≤50mm of the center line of the casing and the bored concrete pile.
- 7. one kind according to claim 1 builds bored pile construction method, it is characterised in that：Buried described in step 3 During casing, if a casing length is inadequate, casing need to be connected, the connected mode of casing is screw connection or electric welding connection； During the electric welding connection, it is inclined-plane that the joint face between casing and casing should burn, and using the full weldering of burning.
- 8. one kind according to claim 1 builds bored pile construction method, it is characterised in that：Machine described in step 5 In tool drilling, the drilling machine that Soft Soil Layer is used is rotary digging drilling machine, and the drilling machine that hard stratum is used is percussive drilling Machine.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107246006A (en) * | 2017-06-29 | 2017-10-13 | 深圳市蛇口招商港湾工程有限公司 | Concrete-pile reinforcement cage structure and pile-filling method |
| CN107254874A (en) * | 2017-08-02 | 2017-10-17 | 江苏燕宁建设工程有限公司 | The application wherein of the construction method of sand seam geology cast-in-situ bored pile, chemical slurry retaining wall and pile foundation |
| CN107476289A (en) * | 2017-07-31 | 2017-12-15 | 深圳市建筑设计研究总院有限公司 | A kind of construction method of In The Granite Area uplift pile |
| CN107905118A (en) * | 2017-12-26 | 2018-04-13 | 杭州市城市建设基础工程有限公司 | Large bridge pile base construction method |
| CN109184564A (en) * | 2018-08-17 | 2019-01-11 | 上海二十冶建设有限公司 | Method for correcting error when oblique rock stratum is met in a kind of rotary drilling rig pore-forming |
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| CN109914398A (en) * | 2019-03-19 | 2019-06-21 | 安徽联开建设工程有限责任公司 | A kind of filling pile cage of reinforcement component and its construction method |
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| 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 |
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| CN107246006B (en) * | 2017-06-29 | 2019-11-05 | 深圳市蛇口招商港湾工程有限公司 | The pile-filling method of concrete-pile |
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| CN107476289A (en) * | 2017-07-31 | 2017-12-15 | 深圳市建筑设计研究总院有限公司 | A kind of construction method of In The Granite Area uplift pile |
| CN107254874A (en) * | 2017-08-02 | 2017-10-17 | 江苏燕宁建设工程有限公司 | The application wherein of the construction method of sand seam geology cast-in-situ bored pile, chemical slurry retaining wall and pile foundation |
| CN107905118A (en) * | 2017-12-26 | 2018-04-13 | 杭州市城市建设基础工程有限公司 | Large bridge pile base construction method |
| CN109184564A (en) * | 2018-08-17 | 2019-01-11 | 上海二十冶建设有限公司 | Method for correcting error when oblique rock stratum is met in a kind of rotary drilling rig pore-forming |
| CN109736322A (en) * | 2018-12-30 | 2019-05-10 | 中铁十四局集团有限公司 | Building enclosure forming method |
| CN109914398A (en) * | 2019-03-19 | 2019-06-21 | 安徽联开建设工程有限责任公司 | A kind of filling pile cage of reinforcement component and its construction method |
| CN109914455A (en) * | 2019-03-29 | 2019-06-21 | 广西鑫豪建筑工程有限公司 | A kind of structure foundation cast-in-place pile construction method |
| CN110424486A (en) * | 2019-07-12 | 2019-11-08 | 广州穗岩土木科技股份有限公司 | A kind of construction method of nonstandard diaphragm wall |
| CN110360985A (en) * | 2019-08-14 | 2019-10-22 | 中交（天津）生态环保设计研究院有限公司 | A kind of sea groin ground deep soil settlement survey device and its method for embedding |
| CN110360985B (en) * | 2019-08-14 | 2024-03-01 | 中交（天津）生态环保设计研究院有限公司 | Marine breakwater foundation layered settlement monitoring device and burying method thereof |
| CN111287176A (en) * | 2020-02-15 | 2020-06-16 | 广州市芳村建筑工程有限公司 | Construction method of building pile foundation |
| 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 |
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Application publication date: 20170531 |