CN105821836B - A kind of construction method of carrier pile - Google Patents
A kind of construction method of carrier pile Download PDFInfo
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- CN105821836B CN105821836B CN201610090411.3A CN201610090411A CN105821836B CN 105821836 B CN105821836 B CN 105821836B CN 201610090411 A CN201610090411 A CN 201610090411A CN 105821836 B CN105821836 B CN 105821836B
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- 238000010276 construction Methods 0.000 title claims abstract description 45
- 239000000203 mixture Substances 0.000 claims abstract description 49
- 239000004568 cement Substances 0.000 claims abstract description 41
- 239000000945 filler Substances 0.000 claims abstract description 38
- 239000002689 soil Substances 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 34
- 230000035515 penetration Effects 0.000 claims abstract description 27
- 239000011178 precast concrete Substances 0.000 claims abstract description 23
- 230000001360 synchronised effect Effects 0.000 claims abstract description 12
- 239000011083 cement mortar Substances 0.000 claims abstract description 11
- 239000004567 concrete Substances 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000002513 implantation Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 230000010412 perfusion Effects 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000011150 reinforced concrete Substances 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- 230000037452 priming Effects 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 239000011440 grout Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 239000011449 brick Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
-
- 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
- E02D5/50—Piles comprising both precast concrete portions and concrete portions cast in situ
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/08—Drop drivers with free-falling hammer
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- 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 present invention provides a kind of construction method of carrier pile, and its step is：1）Casing is drowned into set depth；2）Sink to weight in casing, the gap of weight and casing can form gas channel and cement mixture can be passed through；3）Synchronous bottom when carried on filler and heavy tamping operation, weight does not go out that casing is suitable for reading and bottom when ramming that falls does not hit casing, to ensure low to ram away from, small energy；4）Repeat step 3）It is reinforced pile-end soil body closely knit；5）Compactness is controlled by penetration or amount of filler standard, stake end carrier is formed；6）Grout injection or cement mortar；7）The cast-in-place or precast concrete pile body of construction.Its technical characterstic and advantage are that 1. change weight rams mode；2. realize that filler and the synchronous of heavy tamping are carried out by the redesign to filler, weight, casing；3. change filler composition, improve support strength；4. filler rams and controlled compactness process to be continuously finished.
Description
Technical field
The present invention relates to piling Technology, more particularly to a kind of construction method of carrier pile.
Background technology
A kind of construction technology of concrete-pile, the spy of the technology are disclosed in patent No. ZL98101041.5 patent documents
Point is that filling tamped is compacted to wait operation to form artificial supporting course by being carried out in stake bottom, upper load is passed through concrete pile body
With the artificial supporting course of stake bottom, it is delivered on preferable supporting course, so as to improve the bearing capacity of stake.But the patent was being constructed
Also the problem of some are present is found in journey successively：1. a feature of the technology is that weight is to ram out the spacing of casing bottom one
Carry out filler again from after and ram expansion, and require that receipts hammer hour hammer goes out the depth of casing more than 50cm, therefore be when bearing course at pile end
It is this to hammer out ramming mode and causing to produce compared with large disturbances supporting course for casing into shape, it is therefore desirable to which that rammer is filled out more during easy disturbed soil
Many fillers, can just make disturbed soil layer reach required compactness, and its disadvantage one is the increase in material cost, and two be to fill out
Doses crosses conference and causes the destruction to adjacent stake, larger quality problems occurs.2. by fillers such as the building wastes that is used
Particle diameter is larger, thus every time filler when be both needed to weight proposing that casing is suitable for reading could complete filler, its disadvantage one be weight oneself fall
Fall higher away from larger, energy when ramming, aggravated the disturbance to bearing course at pile end, two be to propose that weight takes more mistake every time
Journey is slow, greatly reduces construction efficiency.3. because between weight and casing space it is smaller, when its disadvantage one is heavy tamping around
There is no exhaust passage to produce gas support at hammer bottom, influence hammering energy, two be that heavy tamping goes out when being again stepped up after casing still
Influenceed by no exhaust passage, can hammer bottom and the soil body between produce negative pressuren zone, not only increase lifting weight required for
Energy, the presence in negative pressure of vacuum area can also aggravate the Hui Yong of underground water, and work efficiency is reduced while increasing difficulty of construction.4. adopted
The fillers such as building waste are generally the even new brick of removal brick, its disadvantage one be with the development clay brick of construction use it is more next
It is fewer, continue to increase the cost of rammer filler, two be the secondary pollution for easily causing building waste.5. the technology also fills out dry including rammer
The process of dry concrete, but building stones in no slump concrete during heavy tamping ram powdering substantially by weight, greatly
The intensity for reducing no slump concrete.
Accordingly, it would be desirable to which one kind can solve the problem that above mentioned problem, and process is simple, cost still relatively low construction method.
The content of the invention
The problem of present invention is in order to solve above-mentioned and propose, it is therefore intended that a kind of construction method of carrier pile is provided,
By to filler, weight, casing redesign, realize the synchronous progress of filler and heavy tamping, pass through heavy tamping mode
Change, it is to avoid disturbance to pile-end soil body and time saving and energy saving formation stake end carrier, the change for passing through filler composition are improved and carried
Body intensity, so as to while pile foundation bearing capacity is significantly improved, realize the raising of work efficiency and the saving of cost.
To achieve these goals, the present invention includes a kind of construction method of carrier pile, and its step includes：
1）At stake position, casing is drowned into set depth；
2）Weight is sunk in casing, the gap between weight outer wall and casing inwall meets following requirements：1. being capable of shape
Ventilated into gas channel smooth；2. the cement mixture that will be inserted can be made to pass through gap and fall into bottom in casing
Portion；
3）It is synchronous to carry out filler and heavy tamping operation, i.e., while inserting cement mix into casing by the suitable for reading of casing
Thing, while being lifted up making weight free-falling ram cement mixture after weight；The maximum of above-mentioned cement mixture
Particle diameter is less than the gap between weight outer wall and casing inwall, and the operation of above-mentioned heavy tamping meets following requirements：1. weight to
Weight bottom is suitable for reading without departing from casing all the time during upper lifting；2. weight bottom does not hit casing bottom all the time when weight drop is rammed
End；To ensure that weight is that cement mixture is carried out in the inside of casing low to ram away from, small energy all the time；
4）Repeat above-mentioned steps 3）Synchronous filler and heavy tamping operation, make under an end in certain depth and scope
The soil body be reinforced closely knit, weight bottom does not hit casing bottom all the time in the process；
5）Compactness is controlled by one of following two kinds of standards：1. penetration of the measurement weight in not filler, is passed through
Stop ramming when in-degree measured value meets design load, when pile penetration measured value is unsatisfactory for design load, proceeds filler and ram directly
To meeting design load；2. the setting loading of cement mixture is calculated according to geological conditions and load requirement, is filled according to setting
Measure and finish whole cement mixture compactings；Weight bottom does not hit casing bottom all the time in the process；So as at stake end
The stake end carrier for forming the cement mixture by being compacted and being formed by solid soil, realizes the equal calculation area of carrier pile
Ae：
6）The construction of pile body is carried out by one of following methods：1. cast-in-place concrete pile body：Steel reinforcement cage is sunk in casing
After pour into a mould pile concrete, reintroduce casing pile；2. cast-in-place concrete pile body：Poured into a mould in casing after concrete in concrete
Middle anti-plug steel reinforcement cage, reintroduces casing pile；3. precast concrete pile body：Precast concrete pile is implanted into casing to propose after one's death
Casing, the space of precast concrete pile body and stake holes wall is filled up with curing agent；4. precast concrete pile body：Propose after casing,
Using stake holes as implantation precast concrete pile body is oriented to, the bottom of precast concrete pile body is combined with stake end carrier.
The step 1 of above-mentioned construction method）In, the mode that casing is sunk to includes one of following methods or combination：1. in shield
Weight is placed in cylinder, foundation soil body is punched out using the impact kinetic energy of weight, stake holes is formed and is lowered into casing backward；2. adopt
Drive inner tube to ram casing with diesel hammer or hydraulic hammer or electrically operated hammer, inner tube and casing is synchronously sunk to；3. spiral is used
After the mode soil taking hole forming of brill or churning driven or manually digging hole, casing is sunk in stake holes；4. using hammering or vibration or
The mode of static pressure, by the casing with precast pile tip or flapper pile tip to being lowered into.
The step 2 of above-mentioned construction method）In, the gap between weight outer wall and casing inwall is more than 2cm, to form air
Cement mixture that passage and guarantee will be inserted passes through.
The step 3 of above-mentioned construction method）、4）In, cement mixture is with cement and sand or small particle rubble or above-mentioned material
The compound of the material mix that adds water is formed.
The step 4 of above-mentioned construction method）In, it is reinforced the soil body under an end in certain depth and scope closely knit, refers to
The soil body in the range of stake end 3~5m of depth below, 2~3m of diameter is compacted, and ensures that construction ground is not swelled, and adjacent stake carrier is not
Destruction.
The step 5 of above-mentioned construction method）In control standard 1. in, penetration refers to：Weight in not filler at present
It is blow pile penetration to fall time sinking numerical value of working as after ramming, and continuously falls three times away from measurement with identical for penetration；Pass through
In-degree measured value meets design load and referred to：A rear pile penetration in penetration is less than or equal to previous injection
Degree, the total value of penetration is less than design load, and the span of design load is 0~50mm.
The step 5 of above-mentioned construction method）In, equal calculation area Ae, the Ae value of carrier pile be according to penetration and
The soil nature determination of soil layer is reinforced, the span of Ae values is 1.4~4.5m3。
The step 5 of above-mentioned construction method）In, when penetration meets the cement mixture compacting of design load or whole
When finishing, weight bottom maintains an equal level with casing bottom, and cement mixture is stayed to ensure not fill in casing.
The step 5 of above-mentioned construction method）After end, to grout injection inside casing or cement mortar, the cement mortar or
The perfusion quantity of cement mortar, the height inside casing is less than 2m.Its purpose and effect are in next perfusion pile concrete
The isolation of lower concrete is avoided during process, or consolidating for joint portion is being improved in next implantation precast concrete pile body process
Knotting strength.
The step 6 of above-mentioned construction method）In method 3. with method 4. in, precast concrete pile body include pile for prestressed pipe
Or prefabricated reinforced concrete solid pile.
The step 6 of above-mentioned construction method）In method 3. with method 4. in, implantation precast concrete pile body when use weight
The top of precast concrete pile body is touched, precast concrete pile body bottom is preferably combined with stake end carrier.
The construction method of the carrier pile of the present invention, technical characteristics and advantage are embodied in：
1. change weight rams mode：First, weight bottom is suitable for reading without departing from casing all the time when weight is lifted up,
Fall away from low so heavy tamping energy is small, second, weight bottom does not hit casing bottom all the time when weight drop is rammed, protected in terms of two
Demonstrate,proved weight be all the time cement mixture is carried out in the inside of casing it is low rammed away from, small energy, therefore the cement inserted
Mixture be by gradually it is squeezed go out casing outside so that disturbance when avoiding the filler from ramming to holding force layer soil body, while improving stake end
The shaping speed and work efficiency of carrier.
2. to filler, weight, casing redesign, realize the synchronous progress of filler and heavy tamping：First, increase
Gap between weight and casing, formed air duct enable weight smoothly, the lifting that does not subtract of energy and whereabouts, also avoid
Negative pressuren zone is formed during lifting weight to inhale, take out pile-end soil body and underground water；Second, the particle diameter of filling reinforced material is reduced, makes water
Gap of the mud mixture smoothly between weight and casing fall into casing bottom, it is to avoid script weight must propose casing mouthful
Wait the backwardness means that can be just rammed after filler, it is ensured that the continual continuous doing work of weight greatly improves work efficiency, particularly ensures
Above-mentioned weight is that the implementation of the low feature rammed away from small energy is carried out to cement mixture in the inside of casing all the time.
3. change filler composition, improve support strength：The filler composition for the cement mixture inserted be specific surface area compared with
Big fine grained hydrophilic substance, closes the excellent of underground water during to construction, it also avoid original ramming process to big
The destruction of grain aggregate, holds while cement mixture possesses cementing property so as to significantly enhance support strength, and then improve pile foundation
Carry power.
4. filler rams and controlled compactness process to be continuously finished, and fills out dry without rammed again after original detection compactness
Dry concrete process, that is, avoided and pile-end soil body further disturbed, and process is saved again and improves work efficiency.
5. pore forming process can use multiple means, and pile body construction can significantly improve the scope of application using cast-in-place and prefabricated,
It is applicable in various soil layers and base form.
Brief description of the drawings
Fig. 1 is the process chart of one embodiment of the carrier pile construction method of the present invention；In Fig. 1,1 is vibrator, and 2 be shield
Cylinder, 3 be weight, and 4 be cement mixture, and 5 be that, by solid soil, 6 be cement mortar, and 7 be precast concrete pile body.
Fig. 2 is the process chart of another embodiment of the carrier pile construction method of the present invention；In Fig. 2,1 is auger, and 2 are
Casing, 3 be weight, and 4 be cement mixture, and 5 be that, by solid soil, 6 be cement mortar, and 7 be steel reinforcement cage, and 8 be pile body coagulation
Soil.
Embodiment
Below by specific embodiment, the invention will be further described.
Fig. 1 is the process chart of one embodiment of the carrier pile construction method of the present invention, first, as shown in a in Fig. 1,
At stake position in ground, pushed by the vibration of vibrator 1 and the casing 2 with precast pile tip is drowned into projected depth；Then,
As shown in b in Fig. 1, weight 3 is placed in casing 2, the gap between the outer wall of weight 3 and the inwall of casing 2 is 5cm；Then,
It is synchronous to carry out filler and heavy tamping operation as shown in c in Fig. 1, i.e., while inserting water into casing 2 by the suitable for reading of casing 2
The mixture 4 of mud and sand and small particle rubble composition, while being lifted up making after weight 3 free-falling of weight 3 to cement mix
Thing 4 is rammed, and the maximum particle diameter of cement mixture 4 is less than 2cm, and its bottom is all the time without departing from casing 2 when weight 3 is lifted up
It is suitable for reading, its bottom when ramming that falls of weight 3 does not hit the bottom of casing 2 all the time；Then, as shown in d in Fig. 1, repeat on
The operation of the synchronous filler and heavy tamping stated, is reinforced the soil body under an end in certain depth and scope closely knit, herein mistake
The bottom of weight 3 does not hit the bottom of casing 2 all the time in journey；Then, as shown in e in Fig. 1, measurement weight 3 in not filler it is identical fall
Away from continuous penetration, in the process the bottom of weight 3 do not hit the bottom of casing 2 all the time, when after pile penetration once it is small
When previous pile penetration and penetration total value are less than design load 10cm, stop weight 3 and ram, now weight
3 bottoms maintain an equal level with the bottom of casing 2, so as to form the cement mixture 4 by being compacted at stake end and be collectively constituted by solid soil 5
Stake end carrier, realize the equal calculation area Ae of carrier pile；Then, as shown in f in Fig. 1, weight 3 is proposed, is filled out in casing 2
Enter the cement mortar 6 that height is 50cm；Then, as shown in g in Fig. 1, casing 2 is proposed, places prefabricated mixed in stake holes upper vertical
Solidifying soil pile body 7, the stake top of precast concrete pile body 7 is touched using weight 3, makes it using stake holes to be oriented to being lowered into；Finally, such as
In Fig. 1 shown in g, continue to hammer up to the bottom surface of precast concrete pile body 7 is combined with stake end carrier top surface, complete applying for carrier pile
Work.
Fig. 2 is the process chart of another embodiment of the carrier pile construction method of the present invention, first, as shown in a in Fig. 2,
At stake position in ground, soil taking hole forming is rotated to projected depth using auger 1；Then, as shown in b in Fig. 2, in stake holes
Casing 2 is drowned into set depth, weight 3 is placed in casing 2, the gap between the outer wall of weight 3 and the inwall of casing 2 is
4cm；Then, it is synchronous to carry out filler and heavy tamping operation as shown in c in Fig. 2, i.e., while passing through the suitable for reading to casing 2 of casing 2
In insert cement and sand composition mixture 4, while being lifted up making the free-falling of weight 3 enter cement mixture 4 after weight 3
Row is rammed, and the maximum particle diameter of cement mixture 4 is less than 1cm, and its bottom is upper without departing from casing 2 all the time when weight 3 is lifted up
Mouthful, its bottom does not hit the bottom of casing 2 all the time when the whereabouts of weight 3 is rammed；Then, as shown in d in Fig. 2, repeat above-mentioned
The operation of synchronous filler and heavy tamping, is reinforced the soil body under an end in certain depth and scope closely knit, in the process
The bottom of weight 3 does not hit the bottom of casing 2 all the time；Then, as shown in e in Fig. 2, the cement mixture 4 of loading will be set all
Compacting is finished, and the bottom of weight 3 does not hit the bottom of casing 2 all the time in the process, so as to form the cement by being compacted at stake end
The stake end carrier that mixture 4 and solid soil 5 are collectively constituted, realizes the equal calculation area Ae of carrier pile；Then, such as f in Fig. 2
It is shown, the cement mortar 6 that height is 30cm is inserted in casing 2；Then, as shown in g in Fig. 2, propose after weight 3 in casing 2
Inside sink to after steel reinforcement cage 7, the perfusion pile body concrete eight in casing 2；Finally, as shown in h in Fig. 2, propose after casing 2 to pile body
Concrete eight carries out vibration compacting, completes the construction of carrier pile.
Above example is descriptive, and non-limiting, it is impossible to protection scope of the present invention is limited with this, upper
State it is bright on the basis of the other various forms of changes or variation amplified out, among protection scope of the present invention.
Claims (11)
1. a kind of construction method of carrier pile, this method comprises the steps：
1）At stake position, casing is drowned into set depth；
2）Weight is sunk in casing, the gap between weight outer wall and casing inwall meets following requirements：1. gas can be formed
Circulation road ventilates smooth；2. the cement mixture that will be inserted can be made to pass through gap and fall into casing inner bottom part；
3）It is synchronous to carry out filler and heavy tamping operation, i.e., while inserting cement mixture into casing by the suitable for reading of casing,
While being lifted up making weight free-falling ram cement mixture after weight；The maximum particle diameter of above-mentioned cement mixture
Less than the gap between weight outer wall and casing inwall, the operation of above-mentioned heavy tamping meets following requirements：1. weight is carried upwards
Weight bottom is suitable for reading without departing from casing all the time when rising；2. weight bottom does not hit casing bottom all the time when weight drop is rammed；
To ensure that weight is that cement mixture is carried out in the inside of casing low to ram away from, small energy all the time；
4）Repeat above-mentioned steps 3）Synchronous filler and heavy tamping operation, make the soil in certain depth and scope under an end
Body is reinforced closely knit, and weight bottom does not hit casing bottom all the time in the process；
5）Compactness is controlled by one of following two kinds of standards：1. penetration of the weight in not filler, pile penetration are measured
Stop ramming when measured value meets design load, when pile penetration measured value is unsatisfactory for design load, proceeds filler and ram until full
Sufficient design load；2. the setting loading of cement mixture is calculated according to geological conditions and load requirement, will according to setting loading
Whole cement mixture compactings are finished；Weight bottom does not hit casing bottom all the time in the process；So as to be formed at stake end
By the cement mixture being compacted and the stake end carrier formed by solid soil, the equal calculation area Ae of carrier pile is realized：
6）The construction of pile body is carried out by one of following methods：
1. cast-in-place concrete pile body：Sunk in casing and pile concrete is poured into a mould after steel reinforcement cage, reintroduce casing pile；2. it is cast-in-place
Concrete pile body：In casing pour into a mould concrete after in concrete anti-plug steel reinforcement cage, reintroduce casing pile；3. concrete
Native pile body：Precast concrete pile is implanted into casing and proposes casing after one's death, and the space of precast concrete pile body and stake holes wall is used
Curing agent is filled up；4. precast concrete pile body：Propose after casing, precast concrete pile body is implanted into by guiding of stake holes, it is prefabricated mixed
The bottom of solidifying soil pile body is combined with stake end carrier；
The maximum particle diameter of above-mentioned cement mixture is less than 2cm.
2. construction method according to claim 1, it is characterised in that above-mentioned steps 1）In, the mode bag that above-mentioned casing is sunk to
Include one of following methods or combination：1. weight is placed in casing, foundation soil body is rushed using the impact kinetic energy of weight
Cut, form stake holes and be lowered into casing backward；2. drive inner tube to ram casing using diesel hammer or hydraulic hammer or electrically operated hammer, make
Inner tube and casing are synchronously sunk to；3. using after soil taking hole forming by the way of auger or churning driven or manually digging hole, casing is sunk to
Into stake holes；4. it is by the way of hammering or vibration or static pressure, the casing with precast pile tip or flapper pile tip is downward
Sink to.
3. construction method according to claim 1, it is characterised in that above-mentioned steps 2）In, weight outer wall and casing inwall it
Between gap be more than 2cm.
4. construction method according to claim 1, it is characterised in that above-mentioned steps 3）、4）In, above-mentioned cement mixture is
Formed with the compound of the cement and sand or small particle rubble or above-mentioned material mix that adds water.
5. construction method according to claim 1, it is characterised in that above-mentioned steps 4）In, it is above-mentioned to make certain depth under an end
It is reinforced with the soil body in scope closely knit, refers to that the soil body in the range of an end 3~5m of depth below, 2~3m of diameter is compacted, and
Ensure that construction ground is not swelled, adjacent stake carrier is not destroyed.
6. construction method according to claim 1, it is characterised in that above-mentioned steps 5）In control standard 1. in, above-mentioned three
Pile penetration is hit to refer to：Weight falls in not filler ram after when time sinking numerical value is blow pile penetration, continuously with identical
Fall away from measurement three times be penetration；Pile penetration measured value meets design load and referred to：Once passed through after in penetration
In-degree is less than or equal to previous pile penetration, and the total value of penetration is less than design load, and the span of design load is 0
~50mm.
7. construction method according to claim 1, it is characterised in that above-mentioned steps 5）In, it is above-mentioned to realize the equivalent of carrier pile
Reference area Ae, Ae value is according to penetration and is reinforced the soil nature of soil layer and determines, the spans of Ae values is 1.4~
4.5m3。
8. construction method according to claim 1, it is characterised in that above-mentioned steps 5）In, when above-mentioned penetration is met
When the cement mixture compacting of design load or whole is finished, weight bottom maintains an equal level with casing bottom.
9. construction method according to claim 1, it is characterised in that above-mentioned steps 5）After end, to casing inside priming petock
The perfusion quantity of mud or cement mortar, the cement mortar or cement mortar, the height inside casing is less than 2m.
10. construction method according to claim 1, it is characterised in that above-mentioned steps 6）In method 3. with method 4. in,
Above-mentioned precast concrete pile body includes pile for prestressed pipe or prefabricated reinforced concrete solid pile.
11. construction method according to claim 1, it is characterised in that above-mentioned steps 6）In method 3. with method 4. in,
The top of precast concrete pile body is touched during above-mentioned implantation precast concrete pile body using weight, makes precast concrete pile body bottom
Preferably combined with stake end carrier.
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| CN201610090411.3A CN105821836B (en) | 2016-02-18 | 2016-02-18 | A kind of construction method of carrier pile |
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| CN201610090411.3A CN105821836B (en) | 2016-02-18 | 2016-02-18 | A kind of construction method of carrier pile |
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| CN105821836B true CN105821836B (en) | 2017-08-04 |
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| CN106337411B (en) * | 2016-08-30 | 2018-07-31 | 中国十七冶集团有限公司 | A kind of prefabricated pile and construction method of carrier pile |
| CN106812149A (en) * | 2017-03-03 | 2017-06-09 | 王继忠 | A kind of construction method of pile foundation |
| CN107268690B (en) * | 2017-03-25 | 2020-10-27 | 王继忠 | Method for detecting bearing capacity of carrier pile |
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Effective date of registration: 20200824 Address after: 102218, Beijing, Changping District East small town Taiping homes, building 31 Patentee after: BEIJING PUISSANT GEOTECHNICAL ENGINEERING Co.,Ltd. Address before: 102218 Beijing city Changping District East Town Taiping home building No. 31 Beijing possente Geotechnical Engineering Co. Ltd. Patentee before: Wang Jizhong |