CN103061341B - Middle pick pile sinking construction method - Google Patents
Middle pick pile sinking construction method Download PDFInfo
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- CN103061341B CN103061341B CN201310014406.0A CN201310014406A CN103061341B CN 103061341 B CN103061341 B CN 103061341B CN 201310014406 A CN201310014406 A CN 201310014406A CN 103061341 B CN103061341 B CN 103061341B
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Abstract
The invention provides a kind of middle pick pile sinking construction method for prefabricated pile, prefabricated pile is set in the outside of drill bit of pile machine, drill bit of pile machine and auger stem are penetrated to the lower end of prefabricated pile from the upper end of prefabricated pile and carry out drilling hole to ground, construction method injects gases at high pressure while drill bit undermines to form stake holes, the drilling surflaes of prefabricated pile hollow bulb enters the storing soil box of a machine by gases at high pressure and auger stem, and the subsidence velocity of control prefabricated pile, prefabricated pile is synchronously sunk with drill bit drilling in the borehole, comprise the following steps：When drill bit of pile machine excavates the supporting course for arriving ground, interim fixed prefabricated pile stops injection gases at high pressure in stake holes, the radius of turn of expansion drill bit of pile machine；Continue downward drilling to expand stake holes, the external diameter with diameter greater than prefabricated pile of the stake holes after expansion.The small problem of the bearing capacity of pile tip that sinks in ground present invention efficiently solves prefabricated pile in the prior art.
Description
Technical field
The present invention relates to piling Technology field, in particular to digging pile sinking construction method in one kind.
Background technology
In infrastructure project of today, the construction of pile foundation is particularly important.Prefabricated pile is used in very general in infrastructure project
Time, pile-driving method is selected, except according in addition to engineering geological condition, it is also contemplated that pile installation, section, length, place ring
Border and design requirement, the current pile sinking process of hollow concrete prefabricated pile dig pile sinking construction method in using mostly.But now
Middle pick pile sinking construction method due to drilling the single bearing capacity of pile tip for causing prefabricated pile to sink in ground of internal diameter it is small.
The content of the invention
The present invention is intended to provide digging pile sinking construction method in one kind, sunk in ground with solving prefabricated pile in the prior art
The small problem of bearing capacity of pile tip.
To achieve these goals, the invention provides a kind of middle pick pile sinking construction method for prefabricated pile, prefabricated pile
The outside of drill bit of pile machine is set in, drill bit of pile machine and auger stem penetrate the lower end to prefabricated pile to ground from the upper end of prefabricated pile
Drilling hole is carried out, construction method injects gases at high pressure, the brill of prefabricated pile hollow bulb while drill bit undermines to form stake holes
Pick surflaes enters the storing soil box of a machine by gases at high pressure and auger stem, and controls the subsidence velocity of prefabricated pile, makes prefabricated pile
Synchronously sink with drill bit drilling in the borehole, comprise the following steps：When drill bit of pile machine excavates the supporting course for arriving ground, temporarily will
Prefabricated pile is fixed in stake holes, and stops injection gases at high pressure, and expands the radius of turn of drill bit of pile machine；Continue downward drilling with
Expand stake holes, the external diameter with diameter greater than prefabricated pile of the stake holes after expansion.
Further, it is further comprising the steps of after the step of expanding the radius of turn of drill bit of pile machine：Confirm stake machine drill
The radius of turn of head is extended, and to cement mortar is injected in stake holes, continues downward drilling to expand while stake holes, and drill bit of pile machine is stirred
Mixing supporting course is sufficiently mixed cement mortar and the grit of supporting course, and completes to build stake end expansion napiform root.
Further, it is further comprising the steps of after completing to build the step of stake end expands napiform root：Release to prefabricated pile
Interim fixation, prefabricated pile is sunk at the projected depth for expanding napiform root, prefabricated pile is combined together with supporting course, and complete again
Into the fixation of prefabricated pile.
Further, it is further comprising the steps of after the step fixed again of prefabricated pile：Reversion drill bit of pile machine, control
Drill bit of pile machine after system expands bounces back to normal external diameter and makes drill bit of pile machine continue to invert, and then lifts drill bit of pile machine and completes to apply
Work.
Further, before drill bit of pile machine reaches supporting course, according to soil layer hardness and design requirement, arrived in drill bit of pile machine
The radius of turn for expanding drill bit of pile machine is opened before up to supporting course in advance, the radius of turn after drill bit of pile machine expands is more than prefabricated pile
External diameter.
Apply the technical scheme of the present invention, for the middle pick pile sinking construction method of prefabricated pile, prefabricated pile is set in a machine drill
The outside of head, drill bit of pile machine and auger stem are penetrated to the lower end of prefabricated pile from the upper end of prefabricated pile and carry out drilling hole to ground,
Construction method injects gases at high pressure while drill bit undermines to form stake holes, and the drilling surflaes of prefabricated pile hollow bulb is by height
Calm the anger body and auger stem enter the storing soil box of a machine, and control prefabricated pile subsidence velocity, make prefabricated pile in the borehole with brill
Head drilling is synchronously sunk, and is comprised the following steps：When drill bit of pile machine excavates the supporting course for arriving ground, interim fixed prefabricated pile is in stake
Kong Zhong, and stop injection gases at high pressure, expand the radius of turn of drill bit of pile machine；Continue downward drilling to expand stake holes, after expansion
Stake holes the external diameter with diameter greater than prefabricated pile.By expanding the radius of turn of stake machine, built in the stake holes after expansion
Napiform root, then the stake end of prefabricated pile sinks to the expansion napiform root in ground, stake end and the supporting course of prefabricated pile combine together, this
Sample stake end with expand napiform root integrative-structure compared to for prior art have bigger bearing capacity.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, of the invention to show
Meaning property and its illustrates, for explaining the present invention, not constitute inappropriate limitation of the present invention embodiment.In the accompanying drawings：
Drill bit of pile machine arrival is held during Fig. 1 shows the embodiment for the middle pick pile sinking construction method of prefabricated pile of the invention
View when before power layer；
Drill bit of pile machine excavation is arrived during Fig. 2 shows the embodiment for the middle pick pile sinking construction method of prefabricated pile of the invention
The view during supporting course of ground；
Fig. 3 makes prefabricated pile and holding force in showing the embodiment for the middle pick pile sinking construction method of prefabricated pile of the invention
View during the step of layer combines together and fixes prefabricated pile again；
Fig. 4 to show that lift drill bit of pile machine in the embodiment for the middle pick pile sinking construction method of prefabricated pile of the invention complete
View when construction.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The invention provides a kind of embodiment of the middle pick pile sinking construction method for prefabricated pile, specific steps are referring to Fig. 1
To Fig. 4, the prefabricated pile of the present embodiment is illustrated by concrete hollow pile, but the construction method of middle pick pile sinking is not limited to
The drilling pile sinking of concrete hollow pile, and drill bit of pile machine in the present embodiment is the drill bit of pile machine for expanding the wing with hydraulic pressure, can
Following steps are specifically included with the middle pick pile sinking construction method for controlling its radius of turn, the present embodiment：
Alignment ground Zhuan Xin positions, carry out pile sinking, and prefabricated pile 30 is set in the outside of drill bit of pile machine 40, the He of drill bit of pile machine 40
Auger stem penetrates to the lower end of prefabricated pile 30 from the upper end of prefabricated pile 30 and drilling hole is carried out to ground, and the lower end of prefabricated pile 30 is
It is deep into the one end in ground.
Drill bit of pile machine 40 injects gases at high pressure while undermining to form stake holes, and the drilling of the hollow bulb of prefabricated pile 30 is residual
Soil enters the storing soil box of a machine by gases at high pressure and auger stem, and controls the decrease speed of prefabricated pile 30 to make prefabricated pile 30 same
Step is carried out continuously pile sinking during drilling and casting.
Interim fixed prefabricated pile 30 during pile sinking to the depth location for designing needs, and start to expand the rotation of drill bit of pile machine 40
Radius, so that drilling diameter is expanded.Expand stake machine by being rotated by the expansion wing of hydraulic open drill bit of pile machine 40
The radius of turn of drill bit 40.
Before drill bit of pile machine 40 reaches supporting course, drill bit of pile machine 40 expands when under wing closure state, drill bit of pile machine 40
Less than the external diameter of prefabricated pile 30, referring specifically to Fig. 1, the supporting course 20 of ground is located at the lower section of soil layer 10 to radius of turn in figure.
When drill bit of pile machine 40 excavates the supporting course for arriving ground, interim fixed prefabricated pile 30 stops injection in stake holes
Gases at high pressure, expand the radius of turn of drill bit of pile machine 40, and continue drilling downwards to expand stake holes, the internal diameter of the stake holes after expansion
More than the external diameter of prefabricated pile 30, referring specifically to Fig. 2, the supporting course 20 of ground is located at the lower section of soil layer 10 in figure.
After confirming that the radius of turn of drill bit of pile machine 40 is extended, to cement mortar is injected in stake holes, continue downward drilling to expand
While big stake holes, the stirring supporting course of drill bit of pile machine 40 makes the grit of supporting course fully mix with cement mortar, and completion is repaiied
Build an end and expand napiform root.
Release fixation to prefabricated pile 30, prefabricated pile 30 sunk at the projected depth for expanding napiform root, make prefabricated pile 30 with
Supporting course combines together, and fixes prefabricated pile 30 again, and referring to Fig. 3, the supporting course 20 of ground is located at the lower section of soil layer 10 in figure.
When completing the fixed work of prefabricated pile 30, drill bit of pile machine 40 is inverted, the drill bit of pile machine 40 after control expands is bounced back to
Normal external diameter simultaneously makes drill bit of pile machine 40 continue to invert, and then lifts drill bit of pile machine 40 and completes construction, referring to Fig. 4, ground in figure
Supporting course 20 is located at the lower section of soil layer 10, and the fixing device of prefabricated pile 30 is removed after napiform root cement slurry sets are expanded.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：
1st, by expanding the radius of turn of drill bit of pile machine, build napiform root, the stake of prefabricated pile are carried out in the stake holes after expansion
End is sunk in the stake holes of supporting course in ground, and is combined together with supporting course, the integrative-structure of such stake end and expansion napiform root
Compared to for prior art have bigger bearing capacity.
2nd, due to being to work continuously from pile sinking to napiform root is built, even if in the geology complicated and changeable such as sandblasting is susceptible to
Construction, can also prevent the generation of collapse hole phenomenon, and visualize the more aobvious pile sinking of construction precisely convenient and quality safety by instrument
It is reliable.
3rd, due to expand drill bit of pile machine excavated and bottom slip casting simultaneously build expand napiform root, during construction noise it is extremely low,
Vibration is minimum and without mud emission, while soil compaction effect will not be produced to endanger surrounding structures in work progress, is especially suitable for city
The pile foundation engineering of area's skyscraper, realizes efficient energy-saving, environmental protection.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (1)
1. a kind of middle pick pile sinking construction method for prefabricated pile, the prefabricated pile is set in the outside of drill bit of pile machine, the stake
Machine drill head and auger stem penetrate to the lower end of the prefabricated pile from the upper end of the prefabricated pile and drilling hole are carried out to ground, described
Construction method injects gases at high pressure while drill bit undermines to form stake holes, and the drilling surflaes of prefabricated pile hollow bulb is by height
Calm the anger body and auger stem enters the storing soil box of a machine, and control the subsidence velocity of the prefabricated pile, bore the prefabricated pile
Synchronously sink with drill bit drilling in hole, be to work continuously from the build napiform root that sinks to of the prefabricated pile, and can by instrument
Constructed depending on changing, the drill bit of pile machine is the drill bit of pile machine for expanding the wing with hydraulic pressure, it is characterised in that comprised the following steps：
According to soil layer hardness and design requirement, when the drill bit of pile machine excavates the supporting course for arriving ground, or arrived in drill bit of pile machine
Up to before supporting course, the prefabricated pile is fixed in stake holes temporarily, and stops injection gases at high pressure, and by hydraulic open stake
The expansion wing of machine drill head is expanding the radius of turn of the drill bit of pile machine；
Continue downward drilling to expand the stake holes, the external diameter with diameter greater than the prefabricated pile of the stake holes after expansion；
Confirm that the radius of turn of the drill bit of pile machine is extended, then to cement mortar is injected in stake holes, continue downward drilling to expand
While the big stake holes, the drill bit of pile machine stirs the supporting course makes the grit of the cement mortar and the supporting course abundant
Ground mixing, and complete to build stake end expansion napiform root；
The interim fixation to the prefabricated pile is released, the prefabricated pile is sunk at the projected depth of the expansion napiform root, make institute
State prefabricated pile to be combined together with the supporting course, and complete the fixation of the prefabricated pile again；
After the step fixed again of the prefabricated pile, the drill bit of pile machine, the stake machine drill after control expansion are inverted
Head bounces back to normal external diameter and makes the drill bit of pile machine continue to invert, and then lifts the drill bit of pile machine and completes construction；
The fixing device of prefabricated pile is removed after napiform root cement slurry sets are expanded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014406.0A CN103061341B (en) | 2013-01-15 | 2013-01-15 | Middle pick pile sinking construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014406.0A CN103061341B (en) | 2013-01-15 | 2013-01-15 | Middle pick pile sinking construction method |
Publications (2)
| Publication Number | Publication Date |
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| CN103061341A CN103061341A (en) | 2013-04-24 |
| CN103061341B true CN103061341B (en) | 2017-06-06 |
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| CN201310014406.0A Active CN103061341B (en) | 2013-01-15 | 2013-01-15 | Middle pick pile sinking construction method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2837743B1 (en) * | 2013-08-14 | 2015-12-09 | Bauer Spezialtiefbau GmbH | Method and device for producing a foundation element in the ground |
| CN109056724B (en) * | 2017-03-08 | 2021-01-15 | 林裕光 | Pile expanding equipment for road and bridge engineering |
| CN111997040B (en) * | 2020-08-20 | 2022-02-18 | 浙江省大成建设集团有限公司 | Long spiral drilling thin-wall pipe pile composite pile foundation construction device and construction method thereof |
| CN113026746A (en) * | 2021-03-23 | 2021-06-25 | 广东力源液压机械有限公司 | Static pile press for hole guiding and digging and construction method thereof |
| CN113882376A (en) * | 2021-09-17 | 2022-01-04 | 湖南铁甲智能技术有限公司 | Pile sinking construction method and construction structure of prestressed pipe pile |
| CN116988488B (en) * | 2023-09-27 | 2023-12-01 | 四川省建筑科学研究院有限公司 | Excavation protection device and excavation protection method for foundation square pit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02108724A (en) * | 1988-10-14 | 1990-04-20 | Takechi Koumushiyo:Kk | Enlarged-dia. hole drilling method and enlarged-dia. knot piling method |
| JP3468724B2 (en) * | 1999-07-23 | 2003-11-17 | 関西電力株式会社 | Method and device for placing concrete pile and enlarged head |
| CN101196005A (en) * | 2006-12-08 | 2008-06-11 | 天津市海恩海洋工程技术服务有限公司 | Drill absorption pile structure and construction method thereof |
| CN202039365U (en) * | 2011-03-04 | 2011-11-16 | 上海城地建设发展有限公司 | Prestressed centrifugal square pipe pile sinking device using central digging hydraulic method |
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Address after: 212413 No. 1-2 Lingang industrial concentration area, Shu Town, Zhenjiang City, Jiangsu, Jurong Patentee after: Jiangsu Chen Chen machinery equipment manufacturing Limited by Share Ltd Address before: 212413 No. 1-2 Lingang industrial concentration area, Shu Town, Zhenjiang City, Jiangsu, Jurong Patentee before: Jiangsu Tangchen Machinery Equipment Manufacturing Co., Ltd. |