CN104846820B - Hold type screw-type Squeezing Soil Pile pile-forming equipment and bore forming method in a kind of end - Google Patents
Hold type screw-type Squeezing Soil Pile pile-forming equipment and bore forming method in a kind of end Download PDFInfo
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- CN104846820B CN104846820B CN201510304212.3A CN201510304212A CN104846820B CN 104846820 B CN104846820 B CN 104846820B CN 201510304212 A CN201510304212 A CN 201510304212A CN 104846820 B CN104846820 B CN 104846820B
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Abstract
Hold type screw-type Squeezing Soil Pile pile-forming equipment and bore forming method the invention discloses a kind of end, can pile body bottom by gunite make pile body bottom formed " hard bottom ", increase pile body base drag, be effectively controlled the piercing of pile body bottom；Simultaneously because pile body section is screw thread form after pile, pile body screw thread is closely engaged with Pile side soil screw thread, can significantly improve pile perimeter resistance, therefore vertical bearing capacity of single pile is significantly increased, and can effectively shorten designing pile length, reduces construction costs.Other pile synchronously completes with pile body slip casting and can substantially shorten the construction period, improves construction efficiency；Be squeezed simultaneously in the formation of pile Lateral soil body, encryption effect, the performance of pile peripheral earth can be improved, be conducive to the long term of pile foundation, waste outward transport, place mud contamination and processing is also fundamentally avoided, accomplished civilized construction.
Description
Technical field
The Foundation Treatment field such as build the present invention relates to railway, highway, room, hold type screw-type in particular to a kind of end and squeeze
Native stake pile-forming equipment and bore forming method.
Background technology
The area such as the widely distributed alluvial plain of China, stream terrace, coastal, place is more to be by thick-layer~huge thick-layer the 4th
Alluvial deposits is covered, formation lithology be generally silt clay, bury or fluffy silt or fine sand layer composition weak soil or
Mollisol, its spreading depth is big, stratum is weak, the engineering such as railway, highway or the room built under this geological conditions are built
Pile foundation is generally typically friction pile, and stake end can not be placed on hard bottom or basement rock, because all stratum of stake are weak, stake end without hard formation, often
Cause that a footpath or stake are long larger, construction investment is more.
Current existing pile foundation pile type can be divided into artificial digging pile, pre cast pile and cast-in-situ bored pile three major types, its
In be directed to above-mentioned thick-layer weak soil or mollisol stratum, artificial digging pile and pre cast pile are limited by formation condition, underground water hair
Educate and the long factor such as larger of stake and can not use；And the pile-formation process of cast-in-situ bored pile can be divided into impact drill, rotary drilling, auger
Construction technology and its pile-forming equipments such as (long spire and short spirals), wherein impact drill, rotary drilling is in being the drilling that fetches earth, drilling
The easy collapse hole of all soft stratums of stake, liquefaction or shrinkage cavity, pile is more difficult and pile quality is poor, and the heavy quarrel in stake bottom is difficult to clean off thoroughly,
Spoir and body refuse will pollute construction site simultaneously；Crept into using soil compaction during auger bore, the engineering properties of soil around pile can be improved,
But the following formation condition in an end can not be improved, while auger is limited by machine power, the depth or length of pile is constrained.
Therefore, existing pile-forming equipment and its construction are difficult to meet the technology that Deep Thick Soft Ground or soft foundation are reinforced
It is required that or engineering demand.
The content of the invention
Present invention aim to solve above-mentioned background technology it is not enough there is provided a kind of end hold type screw-type Squeezing Soil Pile into
Stake equipment and bore forming method, can improve the following formation condition in an end, increase end resistance, long to reduce stake, reduce engineering
Expense.
The technical scheme is that：Type screw-type Squeezing Soil Pile pile-forming equipment, including drilling tool and grouting equipment are held in a kind of end,
It is characterized in that：The drilling tool includes drilling rod, and the drilling rod is provided with along axis on the slip casting passage of insertion, the slip casting passage
End and the grouting port of grouting equipment are connected, and the slip casting passage lower end is hinged with drill bit, and the slip casting passage lower end is bored by described
Head sealing；The shaft of the drilling rod along axis be provided with it is multiple axially through injected hole, the injected hole upper end is set with slip casting
Standby grouting port is connected, and the injected hole lower end correspondence is connected with nozzle.
Further, the drill bit is tapered, and the bit upper end side is hinged by loose-leaf with the drilling rod bottom, institute
The symmetrical opposite side of bit upper end is stated to be detachably connected with the drilling rod bottom by knocker.
Preferably, the knocker is included on connecting rod, support block and support bar, one end of the connecting rod and the drill bit
End side is welded to connect, and the support block is provided with two, and the support block is fixedly installed on the drilling rod bottom and symmetrically set
Put in the connecting rod other end both sides, the support block edge is provided with through hole, the support with the connecting rod vertical direction
The two ends of bar are supported by two support blocks respectively, and the connecting rod other end is shelved in the middle part of the support bar.
Preferably, multiple injected holes are circumferentially equally spaced
Further, the shaft outer wall of the drilling rod is provided with spiral rotating vane.
Preferably, a diameter of 150mm~200mm of the slip casting passage, the injected hole internal diameter is 8~10mm；It is described
The diameter of nozzle matches with the injected hole internal diameter.
A kind of construction method that type screw-type Squeezing Soil Pile pile-forming equipment pile is held using above-mentioned end, it is characterised in that bag
Include following steps：
1), drilling tool drills to projected depth, while preparing cement mortar by design proportioning；
2), the cement mortar for preparing completion is conveyed along injected hole, cement mortar sprays from nozzle, while reversely rotating lifting
Drilling rod, forms stake bottom cement mortar end and holds body；
3), held after cement mortar end after body meets construction requirement, stop conveying cement mortar to injected hole；
4), drilling rod reversely rotates slow lifting upwards, and drill bit departs from drilling rod bottom under gravity, subsequent coagulation
Soil is poured into rapidly using pumping mode along slip casting passage to drilling rod, forms pile body, until stake top is to designed elevation position, completes stake
Body is poured.
Further, step 4) in, after drill bit and drilling rod bottom depart from, several are vertically plugged positioned at slip casting passage
Interior steel reinforcement cage, steel reinforcement cage lower end enters a bottom cement mortar end and held in body, after the completion for the treatment of that pile body is poured, and steel reinforcement cage is by stake bottom
Hold body and be fixedly connected with pile body in cement mortar end.
Preferably, the shaft outer wall of the drilling rod is provided with spiral rotating vane, is reversely rotated in drilling rod upward
During slow lifting, screw-type pile body is formed.
Using the pile body of pile-forming equipment and bore forming the method formation of the present invention, jet cement can be passed through in pile body bottom
Slurry makes pile body bottom form " hard bottom ", increases pile body base drag and bearing capacity, is effectively controlled the thorn of pile body bottom
Enter；Simultaneously because pile body section is screw thread form after pile, pile body screw thread is closely engaged with Pile side soil screw thread, can significantly improve stake
All frictional resistances, therefore vertical bearing capacity of single pile is significantly increased, and can effectively shorten designing pile length, reduces construction costs.In addition
Pile synchronously completes with pile body slip casting and can substantially shorten the construction period, improves construction efficiency；Simultaneously in formation of pile Lateral
The soil body is squeezed, encryption is acted on, and can improve the performance of pile peripheral earth, is conducive to the long term of pile foundation, is also fundamentally kept away
Exempt from waste outward transport, place mud contamination and processing, accomplish civilized construction.
Brief description of the drawings
Fig. 1 is pile-forming equipment structural representation of the invention；
Fig. 2 is Fig. 1 elevational schematic view；
Fig. 3 is pile body schematic diagram after pile；
Fig. 4 is loose-leaf structure schematic diagram of the present utility model；
Fig. 5 is Bolting structure elevational schematic view of the present utility model；
Fig. 6 is Fig. 5 schematic side view.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
With reference to Fig. 1, Fig. 2 and Fig. 3, type screw-type Squeezing Soil Pile pile-forming equipment is held at a kind of end of the present embodiment, main to include boring
Tool and grouting equipment, drilling tool is the instrument drilled in Deep Thick Soft Ground or soft foundation, and it includes drilling rod 1, and drilling rod 1 is along axis
The slip casting passage 2 of insertion, a diameter of 150mm~200mm of slip casting passage 2 are provided with, slip casting passage 2 is mainly used to convey coagulation
Soil paste material is to form pile body 9, the grouting port connection of the upper end of slip casting passage 2 and grouting equipment, the lower end of slip casting passage 2 and drill bit hinge
Connect, drill bit 6 has open and close function, in drilling, drill bit 6 is closed, and now seals the lower end of slip casting passage 2,
To prevent debris etc. from entering slip casting passage 2, it is ensured that pile body 9 is formed by concreting completely, and when drilling rod is lifted, drill bit 6 is
Open mode, pouring into for concrete is not influenceed；The shaft of drilling rod 1 along axis be provided with it is multiple axially through injected hole 4, it is multiple
Injected hole 4 is circumferentially equally spaced, and the internal diameter of injected hole 4 is 8~10mm, and the grouting port of the upper end of injected hole 4 and grouting equipment connects
Logical, the lower end of injected hole 4 correspondence is connected with nozzle 5, and diameter and the internal diameter of injected hole 4 of nozzle 5 match, and injected hole 4 is mainly used to
Cement mortar is conveyed, cement mortar sprays from nozzle 5, form cement mortar end and hold body 10, can be the pile body 9 subsequently poured
The support of " hard bottom " formula is formed on bottom, to increase the base drag of pile body 9 and bearing capacity, effectively the piercing of control pile body 9 bottom.
The drill bit 6 of the present embodiment is tapered, and the upper end of drill bit 6 is on the plane matched with the section of slip casting passage 2, drill bit 6
End side is hinged by loose-leaf 8 (referring to Fig. 4) with the bottom of drilling rod 1, and the symmetrical opposite side in the upper end of drill bit 6 passes through knocker 7 and the bottom of drilling rod 1
Portion is detachably connected.When drilling rod 1 is lifted up, under the Action of Gravity Field of drill bit 6, the upper end of drill bit 6 is located at the side meeting of knocker 7
Depart from drilling rod 1, and the side that the upper end of drill bit 6 is located at loose-leaf 8 can be overturn, and make drill bit 6 and the bottom of drilling rod 1 in vertical state, and
Lifted together with drill bit 6, so that next time uses.
With reference to Fig. 5 and Fig. 6, the knocker 7 of the present embodiment includes connecting rod 7.1, support block 7.2 and support bar 7.3, connecting rod
7.1 one end is welded to connect with the upper end side of drill bit 6, and support block 7.2 is provided with two, is fixedly installed on the bottom of drilling rod 1 and right
Title is arranged on the other end both sides of connecting rod 7.1, and support block 7.2 is provided with through hole 7.4 along with the vertical direction of connecting rod 7.1, support
The two ends of bar 7.3 are supported by two support blocks 7.2 respectively, and the connecting rod other end is shelved in the middle part of the support bar.Boring
During bar 1 is lifted up, under the Action of Gravity Field of drill bit 6, support bar 7.3 can be broken off, so that the upper end of drill bit 6 is located at door
The side of button 7 can depart from drilling rod 1, and form drill bit 6 and the perpendicular state in the bottom of drilling rod 1.
The shaft outer wall of the drilling rod 1 of the present embodiment is provided with spiral rotating vane 3, the stake of the pile body subsequently poured
Body is also in shape of threads, and screw thread pile body is closely engaged with Pile side soil screw thread, can significantly improve pile perimeter resistance, therefore single-pile vertical orientation is held
Carry power to be significantly increased, can effectively shorten designing pile length, reduce construction costs.
The grouting equipment of the present embodiment is the equipment for high-pressure slip-casting, including pulper, high pressure slurry pump, slip casting are soft
Pipe, nozzle, flowmeter etc. are constituted.Cement mortar is generated in pulper, is delivered to by high pressure slurry pump through slip casting flexible pipe in drilling rod 1
Injected hole 4, then sprayed by nozzle 5, body 10 (as shown in Figure 3) is held at injection stake end soft base stratum formation high-pressure slip-casting end.
A kind of construction method that type screw-type Squeezing Soil Pile pile-forming equipment pile is held using above-mentioned end, is comprised the following steps：
1), according to the position of surveying setting-out that drilling rod 1 is in place, the deviation of the position of drill bit 6 and design attitude not should be greater than
5cm；The rear leveling in place of drilling rod 1 is simultaneously consolidated, it is ensured that the perpendicularity of drilling rod 1, its perpendicularity deviation not should be greater than 1%；Drilling tool drills
To projected depth：Drilling rod 1 should strictly control the decrease speed of drilling rod 1 and rotary speed, make together with the going down process of screw thread blade 3
Drilling rod 1 is matched together with screw thread blade 3, it is desirable to which drilling rod 1 rotates a circle, and declines a pitch, until projected depth；
2), the drill bit 6 of the bottom of drilling rod 1 is reached after projected depth, the cement mortar for preparing completion is conveyed along injected hole, water
Mud is sprayed by multiple shower nozzles 5 of the bottom of drilling rod 1, while reversely rotating lifting drilling rod 1, Injection Space is provided for cement mortar,
According to geological conditions and Test Piles control injection pressure, held with forming the cylindrical cement mortar end in stake bottom as shown in Figure 3
Body 10；
3), after the thickness of body 10 is held at stake bottom truncated cone-shaped cement mortar end meets the requirement that design inspection is calculated, jet cement is stopped
Slurry；Drilling rod 1 reversely rotates slow lifting upwards, and knocker 7 departs from the bottom of drilling rod 1 under gravity, makes drill bit 6 along conjunction
8 Unscrews of page, are then poured into the concrete prepared rapidly using pumping mode, concrete along slip casting passage 2 to drilling rod 1
Fill up and produced shape of threads space is rotated and upgraded by drilling rod 1, generate screw thread concrete pile body 9 as shown in Figure 3；In drilling rod 1
It during reversely rotating lifting, should strictly control drilling rod to lift speed and rotary speed, keep synchronous and matching；
4), carry being drilled into when drill bit 6 reaches design of pile top absolute altitude and stop concrete conveyance, it is contemplated that perfusion surplus.
The step 4 of the embodiment above) in, after drill bit 6 and the bottom of drilling rod 1 depart from, vertically plug several and be located at
Steel reinforcement cage 11 in slip casting passage 2, the lower end of steel reinforcement cage 11 enters a bottom cement mortar end and held in body 10, treats that pile body 9 has been poured
Stake bottom cement mortar end is held body 10 and is fixedly connected with pile body 9 by Cheng Hou, steel reinforcement cage 11, to strengthen the stability of pile body 9.
In addition, the present embodiment pile synchronously completes with pile body slip casting and can substantially shorten the construction period, construction efficiency is improved；
Be squeezed simultaneously in the formation of pile Lateral soil body, encryption effect, the performance of pile peripheral earth can be improved, be conducive to the length of pile foundation
Phase acts on, and also fundamentally avoids waste outward transport, place mud contamination and processing, has accomplished civilized construction.
The above described is only a preferred embodiment of the present invention, not doing any formal to the structure of the present invention
Limitation.Any simple modification, equivalent variations and modification that every technical spirit according to the present invention is made to above example,
In the range of still falling within technical scheme.
Claims (7)
1. the construction method of type screw-type Squeezing Soil Pile pile-forming equipment pile is held at a kind of utilization end, it is characterised in that：Hold type in the end
Screw-type Squeezing Soil Pile pile-forming equipment includes drilling tool and grouting equipment, and the drilling tool includes drilling rod (1), the shaft of the drilling rod (1)
Outer wall is provided with spiral rotating vane (3), and the drilling rod (1) is provided with the slip casting passage (2) of insertion along axis, described
The grouting port of slip casting passage (2) upper end and grouting equipment is connected, and slip casting passage (2) lower end is hinged with drill bit (6), the note
Passage (2) lower end is starched to be sealed by the drill bit (6)；The shaft of the drilling rod (1) along axis be provided with it is multiple axially through note
Starch hole (4), the grouting port of injected hole (4) upper end and grouting equipment is connected, injected hole (4) the lower end correspondence is connected with spray
Mouth (5)；
The construction method of the pile comprises the following steps：
1), drilling tool drills to projected depth, while preparing cement mortar by design proportioning；Drilling rod (1) is bored together with screw thread blade (3)
During, strictly control drilling rod (1) decrease speed and rotary speed, it is desirable to which drilling rod (1) rotates a circle, decline a pitch, directly
To projected depth；
2) cement mortar completed will, be prepared along injected hole (4) conveying, cement mortar sprays from nozzle (5), is carried while reversely rotating
Drilling rod (1) is risen, stake bottom cement mortar end is formed and holds body (10)；
3), held after cement mortar end after body (10) meets construction requirement, stop conveying cement mortar to injected hole (4)；
4), drilling rod (1) reversely rotates slow lifting upwards, and drill bit departs from drilling rod (1) bottom under gravity, then mixed
Solidifying soil is poured into rapidly using pumping mode along slip casting passage (2) to drilling rod (1), forms pile body (9), up to stake top to designed elevation
Position, completes pile body and pours；
During the drilling rod (1) reversely rotates lifting, strict control drilling rod lifting speed and rotary speed keep synchronous
And matching, form screw-type pile body.
2. the construction method of type screw-type Squeezing Soil Pile pile-forming equipment pile is held at a kind of utilization end according to claim 1, its
It is characterised by：The drill bit (6) is tapered, and drill bit (6) upper end is and putting down that slip casting passage (2) section matches
Face, the bit upper end side is hinged by loose-leaf (8) with the drilling rod (1) bottom, the symmetrical opposite side in drill bit (6) upper end
It is detachably connected by knocker (7) with the drilling rod (1) bottom.
3. the construction method of type screw-type Squeezing Soil Pile pile-forming equipment pile is held at a kind of utilization end according to claim 2, its
It is characterised by：The knocker (7) includes connecting rod (7.1), support block (7.2) and support bar (7.3), the connecting rod (7.1)
One end be welded to connect with the drill bit (6) upper end side, the support block (7.2) is provided with two, the support block (7.2)
It is fixedly installed on the drilling rod (1) bottom and is symmetricly set on the connecting rod (7.1) other end both sides, the support block
(7.2) along through hole (7.4) is provided with the connecting rod (7.1) vertical direction, the two ends of the support bar (7.3) are respectively by two
Individual support block (7.2) support, connecting rod (7.1) other end is shelved in the middle part of the support bar (7.3).
4. the construction method of type screw-type Squeezing Soil Pile pile-forming equipment pile is held at a kind of utilization end according to claim 1, its
It is characterised by：Multiple injected holes (4) are circumferentially equally spaced.
5. the construction method of type screw-type Squeezing Soil Pile pile-forming equipment pile is held at a kind of utilization end according to claim 1, its
It is characterised by：The shaft outer wall of the drilling rod (1) is provided with spiral rotating vane (3).
6. the construction method of type screw-type Squeezing Soil Pile pile-forming equipment pile is held at a kind of utilization end according to claim 1, its
It is characterised by：A diameter of 150mm~200mm of the slip casting passage (2), injected hole (4) internal diameter is 8~10mm；It is described
The diameter of nozzle (5) matches with the injected hole (4) internal diameter.
7. the construction method of type screw-type Squeezing Soil Pile pile-forming equipment pile is held at a kind of utilization end according to claim 1, its
It is characterised by：Step 4) in, after drill bit and drilling rod (1) bottom depart from, several are vertically plugged in slip casting passage (2)
Steel reinforcement cage (11), steel reinforcement cage (11) lower end enters a bottom cement mortar end and holds in body (10), treats that pile body (9) pours completion
Afterwards, stake bottom cement mortar end is held body (10) and is fixedly connected with pile body (9) by steel reinforcement cage (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510304212.3A CN104846820B (en) | 2015-06-04 | 2015-06-04 | Hold type screw-type Squeezing Soil Pile pile-forming equipment and bore forming method in a kind of end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510304212.3A CN104846820B (en) | 2015-06-04 | 2015-06-04 | Hold type screw-type Squeezing Soil Pile pile-forming equipment and bore forming method in a kind of end |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104846820A CN104846820A (en) | 2015-08-19 |
| CN104846820B true CN104846820B (en) | 2017-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510304212.3A Active CN104846820B (en) | 2015-06-04 | 2015-06-04 | Hold type screw-type Squeezing Soil Pile pile-forming equipment and bore forming method in a kind of end |
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| Country | Link |
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| CN (1) | CN104846820B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108867307B (en) * | 2018-06-22 | 2020-06-23 | 四川先舟建设工程有限公司 | Municipal concrete steel structure road bridge and mounting method thereof |
| CN110528956B (en) * | 2019-09-29 | 2024-07-19 | 国网河南省电力公司新密市供电公司 | Intelligent electric pole base, installation device and construction method |
| CN114250769A (en) * | 2021-11-05 | 2022-03-29 | 陕西铁道工程勘察有限公司 | Large head compaction pile forming process |
| CN114737559B (en) * | 2022-04-06 | 2023-10-13 | 河海大学 | A small prefabricated pile foundation that resists multi-directional loads and its construction method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4533279A (en) * | 1983-05-12 | 1985-08-06 | Fundemantum B.V. | Method for making a foundation pile |
| CN2538851Y (en) * | 2002-07-19 | 2003-03-05 | 周茂胜 | Device for forming special shaped pile by drilling high-pressure jetting reaming and pressure concreting |
| CN2883648Y (en) * | 2005-06-29 | 2007-03-28 | 刘润郊 | Drill for drilling, pumping large flowing concrete and jetting slurry forming pile |
| CN203559413U (en) * | 2013-11-22 | 2014-04-23 | 宁波鸿晨建设有限公司 | End-expanded type long spiral drilling hole pressure pouring pile and construction device thereof |
| CN204662430U (en) * | 2015-06-04 | 2015-09-23 | 中铁第四勘察设计院集团有限公司 | A kind of end holds type screw-type Squeezing Soil Pile pile-forming equipment |
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