CN107574816A - Detachable rotation type drilling pile tube and construction method - Google Patents
Detachable rotation type drilling pile tube and construction method Download PDFInfo
- Publication number
- CN107574816A CN107574816A CN201710827814.6A CN201710827814A CN107574816A CN 107574816 A CN107574816 A CN 107574816A CN 201710827814 A CN201710827814 A CN 201710827814A CN 107574816 A CN107574816 A CN 107574816A
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- pile tube
- drill bit
- pressure water
- water jet
- active joint
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Abstract
The invention discloses a kind of detachable rotation type drilling pile tube, including：Pile tube, in hollow structure；Active joint, it is slidably sheathed on traction conduit, and lower end is fixedly connected with draught line, and the active joint is moving up and down in the pile tube；Drilling rod, it is fixedly connected with the lower end of the bascule, in the pile tube；And drill bit, it is located at the drilling rod bottom, is connected with drive mechanism, drives the drill bit to rotate by the drive mechanism；The drill bit includes mechanical drill and multiple High pressure water jet nozzles, and on the mechanical drill, multiple High pressure water jet nozzles are set the multiple High pressure water jet nozzle in different incline directions.Instant invention overcomes pile tube be difficult to injection rock stratum during piling construction the problem of；Reduce the pile body caused by pile driving process to damage, reduce the soil plug effect in pile tube pile driving process.It is easy for construction simple, it is convenient to carry out.
Description
Technical field
The present invention relates to the realm of building construction, more particularly to a kind of detachable rotation type drilling pile tube and construction method.
Background technology
Prestressed concrete pipe pile has been obtained for widely promoting, and be widely used in by fast development for many years
The engineering fields such as building, road, bridge, harbour.In the future for a long period of time, it is continuous complete with China's infrastructure
Kind, tubular pile industry can also sustainable development.At present, the pile sinking technology of concrete tubular pile mainly has three kinds：Static pressure method, hammering method, shake
Dynamic method.
Static pressure construction is that a kind of recast counter-force of matching somebody with somebody by the mechanism of pile deadweight of static pile press and pile frame will be pre-
Pile-formation process in stake press-in soil processed.Static pressure method has as a drawback that：1st, excessive pile driving pressure, which easily clips broken tubular pile body, is caught broken,
Pile tube is set longitudinal crack occur；2nd, stake end is difficult to the hard scar of injection, can not meet Design of Rock Socketed Pile demand；3rd, should not be in underground
Barrier or the more field construction of boulder；4th, soil plug effect is produced.
Hammer-impact construction is by diesel combustion or hydraulic-driven, makes the piston upwards certain altitude in hammer body, then
Freely falling body, caused impact force action make pile tube sink to pile tube stake top.Pile tube sinks to certain depth, passes through pipe pile
The end resistance collective effect of the frictional resistance and pile top of body and surrounding soil, to reach the construction method of design bearing capacity.Hammering method
Have as a drawback that：Noise is big when the 1st, constructing, pollution environment, has been limited in down town and carrying on construction work at night；2nd, excessive hammer
Stake power may produce certain destruction to pile body；3rd, stake end is difficult to the hard scar of injection, can not meet Design of Rock Socketed Pile demand；4、
Should not be in the more field construction of underground obstacle or boulder；5th, soil plug effect be present.
Vibratory drilling method construction is the vibration hammer that is rigidly connected on pile tube, forms a vibration system.By several on axle in hammer
Eccentric block rotates against generation vibration force, vibration system up-down vibration is forced the soil layer corresponding vibration touched with staking, soil layer is strong
Degree declines, drag reduction, so that stake is in the effect sinking of vibration system ballast is buried.But vibratory drilling method has as a drawback that：
1st, ground is affected by vibration big, and is still difficult to penetrate when running into hard interbedded layer；2nd, vibration hammer construction is more complicated, and maintenance is more difficult；3、
Hydraulic vibration driver somewhat expensive.
The information for being disclosed in the background section is merely intended to understanding of the increase to the general background of the present invention, without answering
It has been the prior art well known to persons skilled in the art when being considered as recognizing or implying the information structure in any form.
The content of the invention
It is an object of the invention to provide a kind of detachable rotation type drilling pile tube, during so as to overcome pipe of concrete sunk pile
Conventional construction method is difficult to damage into rock, to pile body, reduces the shortcomings of bearing capacity of pile foundation.
It is another object of the present invention to provide a kind of construction method of detachable rotation type drilling pile tube.
To achieve the above object, the invention provides a kind of detachable rotation type drilling pile tube, including：Pile tube, in hollow
Structure；Active joint, it is slidably sheathed on traction conduit, and lower end is fixedly connected with draught line, and the active joint can
What is moved up and down is located in the pile tube；Drilling rod, it is fixedly connected with the lower end of the bascule, in the pile tube；
And drill bit, it is located at the drilling rod bottom, is connected with drive mechanism, drives the drill bit to rotate by the drive mechanism；
The drill bit includes mechanical drill and multiple High pressure water jet nozzles, and the multiple High pressure water jet nozzle is located at the power auger
On head, multiple High pressure water jet nozzles are set in different incline directions；Wherein, in the case where carrying out bore state, the drill bit
Extend beyond the pile tube bottom.
Preferably, in above-mentioned technical proposal, the active joint is dismountable active joint, in umbrella mechanical structure.
Preferably, in above-mentioned technical proposal, the active joint includes：Sleeve, it is slidably sheathed on the traction
On conduit；More support bars, the more support bars are on the sleeve；More expansion links, the more expansion links and institute
State support bar and correspond setting, described expansion link one end is hinged with the support bar；And drawstring, its one end are located at the branch
The hinged place of strut and the expansion link, the other end are connected with the screw rod；Wherein, in the state of boring work is carried out,
The other end of the expansion link extends into the pile tube pile lining, and the expansion link is in stretched condition.
Preferably, in above-mentioned technical proposal, the pile tube inwall is provided with positioning hole, and in a state of use, the activity connects
The edge of head is in the positioning hole.
Preferably, in above-mentioned technical proposal, the drilling rod is auger stem.
Preferably, in above-mentioned technical proposal, high-pressure water jet conduit, the high-pressure water jet are provided with the mechanical drill
Conduit is connected with the High pressure water jet nozzle, and the high-pressure water jet conduit extends into the traction conduit.
Preferably, in above-mentioned technical proposal, the mechanical drill includes vertical Drilling bore bit and horizontal cutting drill bit, described
Vertical Drilling bore bit is located at middle part, and the horizontal cutting drill bit is set around the vertical Drilling bore bit.
Preferably, in above-mentioned technical proposal, it is provided with the middle part of the vertical Drilling bore bit multiple in the setting of different incline directions
The High pressure water jet nozzle.
Preferably, in above-mentioned technical proposal, it is in incline that bit wing side corresponding to the horizontal cutting drill bit, which is provided with multiple,
The High pressure water jet nozzle tiltedly set.
Preferably, in above-mentioned technical proposal, the drive mechanism is connected with cable, the draught line and the cable
In the traction conduit.
Preferably, in above-mentioned technical proposal, the drive mechanism is motor.
A kind of construction method of detachable rotation type drilling pile tube, comprises the following steps：
(1) installation activity joint, active joint, auger stem and drill bit are stretched into pile tube, the edge of active joint is stretched
Enter in the reserved positioning hole of pile tube, start drive mechanism, in the presence of drive mechanism traction, drive auger stem and drill bit to turn
It is dynamic, the skeleton of active joint is opened under the traction of auger stem, after active joint opens completely, stop driving drive mechanism
Work, completes the installation of active joint；
(2) pile sinking, start drive mechanism, drill bit is drilled downwards；
(3) drill bit reclaims, and driving drive mechanism rotates backward, and the edge of active joint shrinks, and departs from pile tube, pulls out drill bit
；
Preferably, in above-mentioned technical proposal, caused soil and rubble in pile driving process in the step (2), arranged
Slag.
Compared with prior art, the present invention has the advantages that：
(1) drill bit and pile tube, are joined directly together by the detachable rotation type drilling pile tube of the present invention by detachable active joint,
Form a kind of detachable rotation type drilling pile tube.Detachable active joint is umbrella-shaped structure, facilitates the installation of drill bit to fix and return
Receive and utilize.
(2) drill bit embeds motor and sets high-pressure water jet conduit, and drill bit can rotation under the driving of motor.Drill bit includes
Mechanical drill and multiple High pressure water jet nozzles, High pressure water jet nozzle are connected with high-pressure water jet conduit.High-pressure water shot conductance
Pipe is in different incline directions on mechanical drill.Mechanical drill broken rock is with revolving at a high speed using the high intensity of drill bit material in itself
Turn caused by cutting force carry out broken rock, High pressure water jet nozzle broken rock be using drill bit side be provided with it is multiple be in different inclination sides
To High pressure water jet nozzle rock is destroyed, reach auxiliary drill bit precession and enter rock, and by controlling high-pressure water nozzle
Impulsive force reach the purpose of reaming.Drill bit can penetrate hard interlayer according to design strength requirement or squeeze into competent bed, make pipe
Designed elevation is squeezed into stake.The equipment is simple and reliable and is easy to reuse, and solves conventional tube pile construction technology and is difficult to broken rock
Problem, efficiency of construction during pile tube pile sinking is greatly increased, saved the cost of construction.
(3) auger stem device processing dregs is designed, reduces the soil plug that pile driving process is formed.
(4) instant invention overcomes pile tube be difficult to injection rock stratum during piling construction the problem of, greatly increases work
Journey efficiency；Overcoming pile tube should not be underground obstacle or the boulder more field construction the problem of；Reduction is led in pile driving process
The pile body damage of cause, improves pile foundation overall performance；Reduce the soil plug effect in pile tube pile driving process.Construction method is simple, just
In implementation, it is easy to grasp.
Brief description of the drawings
Fig. 1 is that drill bit installs the structural representation before fixing in the detachable rotation type drilling pile tube according to the present invention.
Fig. 2 is that drill bit installs the structural representation after fixing in the detachable rotation type drilling pile tube according to the present invention.
Fig. 3 is the structural representation of drill bit in the detachable rotation type drilling pile tube according to the present invention.
Fig. 4 is the top view of drill bit in the detachable rotation type drilling pile tube according to the present invention.
Fig. 5 is the schematic diagram using the detachable rotation type drilling tube pile construction flow of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield scope is not limited by embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other members
Part or other parts.
As shown in Figures 1 to 5, according to a kind of detachable rotation type drilling pile tube of the specific embodiment of the invention, including
Pile tube 1, active joint 2, drilling rod 3 and drill bit 4.Pile tube 1 is in hollow structure, and active joint 2 is slidably sheathed on traction conduit 5
On, pile tube inwall is provided with positioning hole, and in a state of use, the edge of active joint is in positioning hole.Lower end and draught line 6
It is fixedly connected (for steel wire rope).In the case where carrying out bore state, active joint is moving up and down in pile tube 1.Drilling rod 3 is fixed
Located at the lower end of active joint 2, in pile tube 1.Drill bit 4 is located at the bottom of drilling rod 3, and drive mechanism, the drive are provided with drill bit
Motivation structure is motor 7, and drill bit is connected with motor 7, and motor 7 is connected with cable.Drill bit 4 is driven to rotate by motor 7.Drill bit bag
Mechanical drill 41 and multiple High pressure water jet nozzles 42 are included, multiple High pressure water jet nozzles 42 are multiple on mechanical drill 41
High pressure water jet nozzle is set in different incline directions.In the case where carrying out bore state, by detachable active joint 2 by drill bit 4
It is joined directly together with pile tube 1, forms a kind of detachable rotation type drilling pile tube.Drill bit extends beyond pile tube bottom.Detachable activity
Joint is umbrella-shaped structure, facilitates the installation of drill bit to fix and recycle.One relatively good technical scheme is active joint 2
For dismountable active joint, in umbrella mechanical structure.Specially active joint 2 includes：Sleeve 21, it is slidably sheathed on
Draw on conduit 5.Sleeve 21 is provided with more support bars 22, and the other end of every support bar 22 is corresponding be hinged flexible provided with one
Bar 23.The one end of drawstring 24 is fixedly connected located at the hinged place of support bar and expansion link, the other end with screw rod 3.Drilled
In the state of work, start motor 7, motor 7 drives drill bit 4 to rotate, and drill bit rotates down, and by the effect of drawstring 24, pulls
The slide downward of sleeve 21, the positioning hole extension of the other end of expansion link 23 into pile tube 1, expansion link be in stretched condition, completion
The installation of drill bit.
The specific working method of active joint is, using the draught line steel wire rope in integrated pipeline by drill bit and auger stem
Lifted from stake top portion to relevant position, after the reserved positioning hole on the inside of active joint skeleton alignment pile tube on pile lining, motor opens
It is dynamic, the skeleton of active joint is gradually opened under the traction of draught line steel wire rope, until the skeleton of active joint struts completely.
After active joint skeleton end is fully inserted into pile lining, the inductor on active joint receives signal, motor stopping, drill bit
Installation fixation procedure complete.Removal process is similar with installation process, reverse operating.
Preferably, drilling rod 3 is auger stem, and auger stem is hollow auger stem.Can using hollow auger stem
Aid in drill bit to carry out deslagging, upward conveying soil and rubble, and soil and rubble are further sheared, smashed.Its
The principle of deslagging is：When being drilled, auger stem rotates together with drill bit.After drill bit is broken by native (rock) layer, spiral shell
Rotary drill bar and pile tube inwall just constitute an auger conveyor, bottom hole soil (rock) slag just by the helical blade on drilling rod progressively to
Upper conveying, the soil above umbrella active joint are just continuously pushed upwards, until outside tap.
The embodiment relatively good as one, drill bit 4 include mechanical drill 41 and High pressure water jet nozzle 42, power auger
High-pressure water jet conduit is provided with first 41, high-pressure water jet conduit 43 is connected with High pressure water jet nozzle 42, high-pressure water shot conductance
Pipe extends into traction conduit 5.Mechanical drill 41 includes vertical Drilling bore bit 411 and horizontal cutting drill bit 412, and vertical drilling is bored
First 411 are located at middle part, and horizontal cutting drill bit 412 is set around vertical Drilling bore bit.The vertical middle part of Drilling bore bit 411 is provided with 3
The High pressure water jet nozzle 421 set in different incline directions, bit wing side corresponding to horizontal cutting drill bit 412 is provided with and it
The High pressure water jet nozzle 422 that two corresponding incline directions are set, incline direction and the level of High pressure water jet nozzle 422
The direction that cut drill 412 rotates when drilling is consistent.Mechanical drill broken rock is to utilize the high intensity of drill bit material in itself and high speed
Caused by rotation cutting force carry out broken rock, High pressure water jet nozzle broken rock be using drill bit side be provided with it is multiple be in different inclinations
The High pressure water jet nozzle in direction destroys to rock, reaches auxiliary drill bit precession and enters rock, and by controlling high pressure water jets
The impulsive force of head reaches the purpose of reaming.Drill bit can penetrate hard interlayer according to design strength requirement or squeeze into competent bed, make
Pile tube squeezes into designed elevation.
Inclined High pressure water jet nozzle is housed in drill bit sidepiece and bottom, so as to carry out reaming and broken rock, come with this auxiliary
Drill bit precession is helped to enter rock.The operation principle of high-voltage water jet device is：High-pressure water jet is passed through according to the geological conditions in place of working
Flow, pressure and the direction with control device setting high-pressure water jet occurs, high-pressure water jet occurs to produce simultaneously with control device
Uninterrupted, pressure and the direction of water under high pressure are controlled, then, water under high pressure is transported to drill body end by high-pressure water jet conduit
The nozzle in portion, and eject, huge impulsive force is formed, is evenly distributed in around drill body front end and middle, beats
Dissipate the soil block and admant block of front end.When drill bit rotates, the high-pressure water jet projected from drill bit side can also form horizontal cut
Shear force, fully smash the admant block of surrounding.
Preferably, High pressure water jet nozzle is connected with high-pressure water jet conduit, and motor is connected with cable, draught line, height
Pressure water jet conduit and cable are in traction conduit.Power supply and related manipulation, water under high pressure that drill bit embeds motor can be achieved
The functions such as the conveying of jet, the installation of drill bit and recovery are in one.
A kind of construction method of detachable rotation type drilling pile tube, comprises the following steps：
(1) installation activity joint, as shown in I in Fig. 5, active joint, auger stem and drill bit are stretched into pile tube, it is living
The edge of dynamic joint is stretched into the reserved positioning hole of pile tube, starts drive mechanism, in the presence of drive mechanism traction, drives spiral shell
Rotary drill bar and drill bit rotate, and the skeleton of active joint is opened under the traction of auger stem, after active joint opens completely, stop
Drive mechanism work is only driven, completes the installation of active joint；
(2) enter the driving before rock, as shown in II in Fig. 5, after active joint, auger stem and drill bit install, bore
Head starts to tunnel, and pile tube starts pile sinking；
(3) broken rock pile sinking, as shown in III in Fig. 5, drive mechanism is started, drill bit starts to tunnel downwards, and utilizes spiral
The upward deslagging of drilling rod, when running into competent bed, using high-pressure water jet occur with control device adjust water jet flow,
Pressure and direction, so as to auxiliary rock and reaming；
(4) drill bit reclaims, and as shown in IV in Fig. 5, driving drive mechanism rotates backward, and the edge of active joint shrinks,
Depart from pile tube, pull out drill bit.
The description of the foregoing specific illustrative embodiment to the present invention is to illustrate and the purpose of illustration.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can be much changed
And change.The purpose of selecting and describing the exemplary embodiment is that explain that the certain principles of the present invention and its reality should
With so that those skilled in the art can realize and utilize the present invention a variety of exemplaries and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (10)
- A kind of 1. detachable rotation type drilling pile tube, it is characterised in that including：Pile tube, in hollow structure；Active joint, its be slidably sheathed on traction conduit on, lower end is fixedly connected with draught line, the active joint can on Lower movement is located in the pile tube；Drilling rod, it is fixedly connected with the lower end of the bascule, in the pile tube；AndDrill bit, it is located at the drilling rod bottom, is connected with drive mechanism, drives the drill bit to rotate by the drive mechanism； The drill bit includes mechanical drill and multiple High pressure water jet nozzles, and the multiple High pressure water jet nozzle is located at the power auger On head, multiple High pressure water jet nozzles are set in different incline directions；Wherein, in the case where carrying out bore state, the drill bit Extend beyond the pile tube bottom.
- 2. detachable rotation type drilling pile tube according to claim 1, it is characterised in that the active joint is detachable Active joint, in umbrella mechanical structure.
- 3. detachable rotation type drilling pile tube according to claim 1, it is characterised in that the active joint includes：Sleeve, it is slidably sheathed on the traction conduit；More support bars, the more support bars are on the sleeve；More expansion links, the more expansion links are corresponded with the support bar and set, described expansion link one end and the branch Strut is hinged；AndDrawstring, its one end are connected located at the hinged place of the support bar and the expansion link, the other end with the screw rod；Wherein, in the state of boring work is carried out, the other end of the expansion link extends into the pile tube pile lining, described to stretch Contracting bar is in stretched condition.
- 4. detachable rotation type drilling pile tube according to claim 1, it is characterised in that the pile tube inwall is provided with positioning Hole, in a state of use, the edge of the active joint is in the positioning hole.
- 5. detachable rotation type drilling pile tube according to claim 1, it is characterised in that the drilling rod is auger stem.
- 6. detachable rotation type drilling pile tube according to claim 1, it is characterised in that height is provided with the mechanical drill Pressure water jet conduit, the high-pressure water jet conduit are connected with the High pressure water jet nozzle, the high-pressure water jet conduit to Extend in the traction conduit.
- 7. detachable rotation type drilling pile tube according to claim 1, it is characterised in that the mechanical drill includes vertical Drilling bore bit and horizontal cutting drill bit, the vertical Drilling bore bit are located at middle part, and the horizontal cutting drill bit is around described vertical Drilling bore bit is set.
- 8. detachable rotation type drilling pile tube according to claim 7, it is characterised in that in the middle part of the vertical Drilling bore bit Provided with multiple High pressure water jet nozzles set in different incline directions；Bit wing side corresponding to the horizontal cutting drill bit Face is provided with multiple High pressure water jet nozzles being inclined to set.
- 9. detachable rotation type drilling pile tube according to claim 1, it is characterised in that the drive mechanism and cable Connection, the draught line and the cable are in the traction conduit.
- A kind of 10. construction method of rotation type drilling pile tube as claimed in claim 1 detachable, it is characterised in that including with Lower step：(1) installation activity joint, active joint, auger stem and drill bit are stretched into pile tube, the edge of active joint stretches into pipe In the reserved positioning hole of stake, start drive mechanism, in the presence of drive mechanism traction, drive auger stem and drill bit to rotate, The skeleton of active joint is opened under the traction of auger stem, after active joint opens completely, stop driving drive mechanism work Make, complete the installation of active joint；(2) pile sinking, start drive mechanism, drill bit is drilled downwards, caused soil and rubble in pile driving process, carry out deslagging；(3) drill bit reclaims, and driving drive mechanism rotates backward, and the edge of active joint shrinks, and departs from pile tube, pulls out drill bit and is Can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710827814.6A CN107574816B (en) | 2017-09-14 | 2017-09-14 | Detachable rotation type drilling tubular pile and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710827814.6A CN107574816B (en) | 2017-09-14 | 2017-09-14 | Detachable rotation type drilling tubular pile and construction method |
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| Publication Number | Publication Date |
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| CN107574816A true CN107574816A (en) | 2018-01-12 |
| CN107574816B CN107574816B (en) | 2021-03-26 |
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| CN201710827814.6A Active CN107574816B (en) | 2017-09-14 | 2017-09-14 | Detachable rotation type drilling tubular pile and construction method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533182A (en) * | 2018-03-16 | 2018-09-14 | 李晓 | A kind of cast-in-situ bored pile drilling equipment |
| CN109057716A (en) * | 2018-09-07 | 2018-12-21 | 福建永强岩土股份有限公司 | One kind having water jetting at high pressure stream pore-forming rotary digging drill bit and its construction method |
| CN109098657A (en) * | 2018-10-24 | 2018-12-28 | 云南建投基础工程有限责任公司 | A kind of high-voltage water jet device and method of the processing erratic boulder in conjunction with rotary pile-digging machine |
| CN109469053A (en) * | 2018-10-24 | 2019-03-15 | 中国海洋大学 | Rotating steel tube stake and its application method suitable for coral island geology |
| CN109505305A (en) * | 2018-11-23 | 2019-03-22 | 绍兴大明电力设计院有限公司 | High-pressure rotary-spray formula Screw Anchor composite foundation and preparation method thereof |
| CN111877995A (en) * | 2020-07-20 | 2020-11-03 | 南京集优智库信息技术有限公司 | Water outlet type trenching device distributed at center of main shaft of cutter head |
| CN112942477A (en) * | 2019-12-11 | 2021-06-11 | 中交二公局第一工程有限公司 | Rapid crushing tool for steel pipe pile encountering boulder and construction method |
| CN113550305A (en) * | 2021-08-27 | 2021-10-26 | 重庆大学 | Construction method and drill bit for high-pressure water jet stiffening core composite pile of hard soil interlayer foundation |
| CN113939628A (en) * | 2019-04-09 | 2022-01-14 | Gbm沃克世有限公司 | Foundation pile |
| CN114541378A (en) * | 2022-01-12 | 2022-05-27 | 中国建筑第八工程局有限公司 | Drilling tool device for repairing pile foundation defects and pile foundation defect repairing method |
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| CN101215836A (en) * | 2007-12-29 | 2008-07-09 | 雷玉华 | Construction machinery used for large diameter hollow pile and its construction method and use |
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| CN101215836A (en) * | 2007-12-29 | 2008-07-09 | 雷玉华 | Construction machinery used for large diameter hollow pile and its construction method and use |
| CN207608903U (en) * | 2017-09-14 | 2018-07-13 | 广西大学 | Detachable rotation type drilling pile pile |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533182A (en) * | 2018-03-16 | 2018-09-14 | 李晓 | A kind of cast-in-situ bored pile drilling equipment |
| CN109057716A (en) * | 2018-09-07 | 2018-12-21 | 福建永强岩土股份有限公司 | One kind having water jetting at high pressure stream pore-forming rotary digging drill bit and its construction method |
| CN109098657A (en) * | 2018-10-24 | 2018-12-28 | 云南建投基础工程有限责任公司 | A kind of high-voltage water jet device and method of the processing erratic boulder in conjunction with rotary pile-digging machine |
| CN109469053A (en) * | 2018-10-24 | 2019-03-15 | 中国海洋大学 | Rotating steel tube stake and its application method suitable for coral island geology |
| CN109469053B (en) * | 2018-10-24 | 2024-01-02 | 中国海洋大学 | Rotary steel pipe pile suitable for coral island geology and use method thereof |
| CN109505305A (en) * | 2018-11-23 | 2019-03-22 | 绍兴大明电力设计院有限公司 | High-pressure rotary-spray formula Screw Anchor composite foundation and preparation method thereof |
| CN113939628A (en) * | 2019-04-09 | 2022-01-14 | Gbm沃克世有限公司 | Foundation pile |
| CN112942477A (en) * | 2019-12-11 | 2021-06-11 | 中交二公局第一工程有限公司 | Rapid crushing tool for steel pipe pile encountering boulder and construction method |
| CN112942477B (en) * | 2019-12-11 | 2023-04-21 | 中交二公局第一工程有限公司 | Rapid crushing tool for steel pipe pile encountering boulder and construction method |
| CN111877995A (en) * | 2020-07-20 | 2020-11-03 | 南京集优智库信息技术有限公司 | Water outlet type trenching device distributed at center of main shaft of cutter head |
| CN113550305A (en) * | 2021-08-27 | 2021-10-26 | 重庆大学 | Construction method and drill bit for high-pressure water jet stiffening core composite pile of hard soil interlayer foundation |
| CN114541378A (en) * | 2022-01-12 | 2022-05-27 | 中国建筑第八工程局有限公司 | Drilling tool device for repairing pile foundation defects and pile foundation defect repairing method |
| CN114541378B (en) * | 2022-01-12 | 2023-10-13 | 中国建筑第八工程局有限公司 | Drilling tool device for repairing pile foundation defect and pile foundation defect repairing method |
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| CN107574816B (en) | 2021-03-26 |
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