WO2021208270A1 - 自钻式管柱支护装置及其方法 - Google Patents

自钻式管柱支护装置及其方法 Download PDF

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Publication number
WO2021208270A1
WO2021208270A1 PCT/CN2020/100738 CN2020100738W WO2021208270A1 WO 2021208270 A1 WO2021208270 A1 WO 2021208270A1 CN 2020100738 W CN2020100738 W CN 2020100738W WO 2021208270 A1 WO2021208270 A1 WO 2021208270A1
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WO
WIPO (PCT)
Prior art keywords
pipe pile
drill
drilling
pipe
power
Prior art date
Application number
PCT/CN2020/100738
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
杨忠年
刘泉维
黄成�
李克先
刘林胜
时伟
凌贤长
Original Assignee
青岛理工大学
青岛市地铁六号线有限公司
青岛市地铁一号线有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 青岛理工大学, 青岛市地铁六号线有限公司, 青岛市地铁一号线有限公司 filed Critical 青岛理工大学
Priority to JP2021573723A priority Critical patent/JP7103613B2/ja
Publication of WO2021208270A1 publication Critical patent/WO2021208270A1/zh

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • 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
    • E02D7/28—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes
    • E02D7/30—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes by driving cores
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
    • E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches

Definitions

  • the invention relates to a self-drilling support system and a construction method for soil pipe pile construction, and belongs to the field of building construction.
  • Hammering method The most widely used method of pile sinking in pile foundation construction. The impact energy of the hammer overcomes the resistance of the soil to the pile and sinks the pile to a predetermined depth. Generally suitable for hard plastic and soft plastic cohesive soil. When it is difficult to use in sand or gravel soil, drilling method and water flushing method can be supplemented. Commonly used pile hammers include steam hammer and diesel hammer.
  • the vibration method of pile driving is a high-power electric vibration exciter that generates vibrations with a frequency of 700 to 900 times/min, which overcomes the resistance of the soil to the pile and makes the pile sink into the soil. It is generally suitable for sinking steel sheet piles in sand, and it can also be used for sinking prefabricated reinforced concrete pipe piles with water flushing method.
  • the common specifications of the vibrator used for vibrating piles are 20 tons and 40 tons. At present, the pile driving head with a high frequency of 10,000 times/min is used, which has low vibration and noise and high pile driving speed.
  • Press-in method has the advantages of no noise, no vibration, and low cost. Commonly used pile drivers are 80 tons and 120 tons. The pressed pile needs to use the equipment's own weight and counterweight to press the pile into the soil through the transmission mechanism, so it is only used for soft soil foundation.
  • Water jetting method Auxiliary method of two pile sinking methods, hammering and vibration. During construction, a high-pressure water pump is used to generate a high-speed jet, which destroys or reduces the resistance of the soil, making it easier for hammering or vibration to sink the pile into the soil.
  • the water jetting method is mostly suitable for sandy soil or gravel soil, and the depth of water washing needs to be controlled when using it.
  • Precast pile implantation methods such as pipe drilling and jet-grouting stiffened piles are complicated in technology and low in efficiency.
  • the existing precast pile implantation method mostly introduces Japanese technology, which is not suitable for domestic construction in terms of equipment size and process complexity.
  • the self-drilling pipe string support device and method thereof of the present invention solve the above-mentioned problems in the prior art and provide a pipe pile drilling and grouting support operation device that is easy to assemble and disassemble the support system. Thereby, a geotechnical construction system, equipment design and operation method with large diameter, high efficiency and various soil conditions can be realized.
  • the self-drilling pipe string support device described in this application includes a power drill installed on a drill bit support, and the pumping elbow and the pipe pile connector are respectively connected to the power drill;
  • the pipe pile connector has a hollow tubular structure, and its vertical ends are respectively connected to the power drilling rig and the pipe pile;
  • the bottom end is connected with a liftable drill bit;
  • the liftable drill bit includes a shaft body located in the axial center through which the pull rod is connected, and a plurality of drill tooth brackets with drill tooth bodies are pivotally connected to the outer circumference of the shaft body;
  • the pivotal connection point of the drill tooth bracket along the outer circumference of the shaft body has a trend of circumferential movement; when the pull rod moves upward in the vertical direction, the drill tooth bracket is horizontally pushed toward and received at the bottom end of the pipe pile.
  • top end of the pipe pile connector is fixedly connected to the power drill through a screw thread
  • bottom end of the pipe pile connector is provided with a pipe pile connector bottom cover for nested connection to the top end of the pipe pile.
  • the bottom end of the pipe pile is provided with an internal annular bottom groove.
  • the drill tooth bracket When the drill tooth bracket is stretched upward, the drill tooth bracket is positioned horizontally between the shaft body and the bottom groove, and the drill bit can be lifted. It is integrally fixedly connected to the bottom end of the pipe pile.
  • a clamp protrusion is formed in the outer circumferential direction of the shaft of the pullable drill bit; a clamp groove is formed at the horizontal inner end of the drill tooth bracket, and the clamp protrusion and the clamp groove form a mutual fit
  • the horizontal outer end of the drill tooth bracket is formed with a supporting protrusion, and the supporting protrusion and the bottom groove form a nesting structure that cooperates with each other; the horizontal inner end of the drill tooth bracket is connected to the shaft body through a shaft pivot.
  • the upper end of the pull rod end and the lower end of the pull rod end are sleeved on the upper and lower ends of the pull rod and the shaft body.
  • Applying the above-mentioned self-drilling pipe string supporting device using method includes the following steps:
  • the power drilling rig is fixedly installed on the drilling rig bracket, and the pumping elbow is set on the power drilling rig.
  • the inner cavity of the pumping elbow is connected with the pipe pile connector and the inner cavity of the pipe pile, so as to realize continuous grouting into the ring pipe pile;
  • the pipe pile connector and the power drill are fixedly connected by threads, and the power drill rig is connected with the pipe pile through the pipe pile connector;
  • the power drilling rig is powered on, and the power drilling rig drives the pipe pile to rotate through the pipe pile connector.
  • the liftable drill at the bottom of the pipe pile rotates simultaneously and simultaneously.
  • the drill tooth body continuously cuts the soil and the pipe pile continuously extends into the soil along the vertical direction.
  • the pull rod After drilling, the pull rod is lifted up, and the lower end of the pull rod end lifts the shaft body to drive the supporting boss to rotate counterclockwise. As the tie rod continues to be pulled, the supporting boss and the rotating shaft are used as fulcrums, and the drill tooth bracket is guided counterclockwise based on the principle of leverage. Rotation, so as to promote the clamp protrusion and the clamp groove to disengage with the rotation of the rotating shaft, and the drill tooth bracket is folded inward as a whole.
  • the supporting protrusion and the bottom groove are disengaged, and the drill bit can be lifted to move up from the inner cavity of the pipe pile under the drive of the tie rod.
  • the overall equipment of the drilling rig runs to the next position by itself; then the cement slurry is injected into the pipe pile cavity until it is filled, and finally the pipe pile is installed.
  • the self-drilling pipe string supporting device and method of the present application have the advantages of simple and easy overall structure, easy to disassemble and reassemble; it can be adapted to large diameter and relatively large diameter under various foundation soil conditions. Large-depth pipe pile drilling and grouting operation construction, thereby effectively saving the construction period, reducing the difficulty of on-site operation and construction cost.
  • Figure 1 is a schematic diagram of the overall structure of the self-drilling pipe string supporting device
  • Figure 2 is a schematic diagram of a front view and a top view comparison of the pipe pile connector
  • Figure 3 is a diagram of the use state of the pipe pile connector connected to the top of the pipe pile;
  • Figure 4 is a schematic diagram of the structure of a pipe pile
  • Figure 5 is a schematic diagram of the connection between the pullable drill bit and the pull rod in use
  • Figure 6 is a schematic top view of the pullable drill bit
  • Figure 7 is a schematic diagram of the connection between the pull rod and the liftable drill bit when the pull rod is retracted upward;
  • Figure 8 is a schematic diagram of the self-drilling pipe string support system after completion.
  • the self-drilling pipe string support device described in the present application provides a new type of pipe string support system and combines the existing large-diameter pipe pile special drilling equipment and special ring pipe piles, mainly including: The power drilling rig 1, the pumping elbow 2 and the pipe pile connector 3 on the upper side are respectively connected to the power drilling rig 1.
  • the pipe pile connector 3 has a hollow tubular structure, and its vertical ends are respectively connected to the power drill 1 and the pipe pile 4;
  • the tie rod 7 sequentially penetrates the power drill 1, the pipe pile connector 3 and the pipe pile 4 in the vertical direction, and the vertical bottom end of the tie rod 7 is connected with a liftable drill bit 5;
  • the pullable drill bit 5 includes a shaft body 5-7 which is connected through the accommodating rod 7 and is located in the axial center.
  • a plurality of drill tooth brackets with drill tooth bodies 5-1 are pivotally connected to the outer circumference of the shaft body 5-7. 5-2;
  • the pivotal connection point of the drill tooth bracket 5-2 along the outer circumference of the shaft body 5-7 has a tendency to move in a circumferential direction
  • the pipe pile connector 3 has its top end fixedly connected to the power drill 1 through threads, and its bottom end is provided with a pipe pile connector bottom cover 3-1 for nested connection to the top end of the pipe pile 4.
  • the bottom end of the pipe pile 4 is provided with an internal annular bottom groove 4-1.
  • the drill tooth bracket 5-2 When the drill tooth bracket 5-2 is stretched upward, the drill tooth bracket 5-2 can be horizontally positioned on the shaft body 5-7 , Between the bottom grooves 4-1, so that the pullable drill bit 5 is integrally fixedly connected to the bottom end of the pipe pile 4.
  • a clamp protrusion 5-3 is formed in the outer circumferential direction of the shaft 5-7 of the liftable drill bit 5; a clamp groove 5-4 is formed at the horizontal inner end of the drill tooth bracket 5-2, and the clamp The protruding head 5-3 and the clamp groove 5-4 form a mutually matched nesting structure; the horizontal outer end of the drill tooth bracket 5-2 is formed with a supporting protruding head 5-6, the supporting protruding head 5-6 and the bottom groove 4-1 Form a nested structure that cooperates with each other;
  • the horizontal inner end of the drill tooth bracket 5-2 is pivotally connected to the shaft body 5-7 through the rotating shaft 5-5.
  • the upper and lower ends of the shaft body 5-7 are sleeved with a pull rod end upper end 7-1 and a pull rod end lower end 7-2.
  • the self-drilling pipe string support device using the above-mentioned structural design scheme is used to connect and install the special large-diameter annular pipe pile 4 on the drilling rig 1 after determining the location to be piled.
  • the power drilling rig 1 is driven by the drilling rig after positioning
  • the ring pile 4 rotates simultaneously and integrally.
  • the liftable drill bit 5 fits with the bottom end of the pipe pile 4.
  • the pipe pile 4 rotates and drives the drill bit to rotate together.
  • the drill tooth body 5-1 will break the inner and outer pipe walls. Soil or rock mass. So as to realize the geotechnical engineering construction in various soil foundation conditions such as sand, clay, gravel and so on.
  • the method of using the self-drilling pipe string support device includes the following steps:
  • the drilling rig support 6 is fixedly installed with the power drilling rig 1, and the pumping elbow 2 is set on the power drilling rig 1.
  • the inner cavity of the pumping elbow 2 is in communication with the inner cavity of the pipe pile connector 3 and the pipe pile 4 , So as to realize the function of continuous grouting into the annular pipe pile 4.
  • the pipe pile connector 3 and the power drill 1 are fixedly connected by threads, and the power drill 1 is connected with the pipe pile through the pipe pile connector 3, thereby driving the pipe pile 4 to rotate integrally and synchronously.
  • the pipe pile connector 3 is connected to the pipe pile 4 through the pipe pile connector bottom cover 3-1, and the pipe pile connector bottom cover 3-1 is integrally stuck at the end of the pipe pile 4 ,
  • the fit between the surface and the surface ensures that the two are fixed together.
  • the bottom groove 4-1 of the pipe pile 4 fits with the supporting protrusion 5-5 of the liftable drill bit 5, so as to fix the liftable drill bit 5 and drive the liftable drill bit 5 to be integrated and synchronized
  • the ground rotation is used to drive the drill tooth body 5-1 on the drill tooth bracket 5-2 to perform rock and soil cutting operations.
  • the clamp boss 5-3 installed on the shaft 5-7 and the clamp groove 5-4 are connected by the rotating shaft 5-5, and the two are fit together by the extrusion between the surfaces to ensure the drill tooth bracket 5-2 The horizontal stretch.
  • the tie rod 7 penetrates the entire device and is fixed integrally with the pullable drill bit 5.
  • the upper end 7-1 of the tie rod end ensures the horizontal positioning of the drill tooth bracket 5-2.
  • the power rig 1 is powered on, and the power rig 1 drives the pipe pile 4 to rotate through the pipe pile connector 3.
  • the liftable drill bit 5 at the bottom of the pipe pile 4 rotates simultaneously and integrally, and the drill tooth body 5-1 continuously cuts the soil and pipe.
  • the pile 4 continuously extends into the soil in the vertical direction.
  • the tie rod 7 After drilling, the tie rod 7 is lifted up, and the lower end 7-2 of the tie rod end lifts the shaft 5-7, driving the supporting projection 5-6 to rotate counterclockwise. As the tie rod 7 continues to be pulled, the supporting projection 5-6 and The rotating shaft 5-5 is used as a fulcrum, and the principle of lever guides the drill tooth bracket 5-2 to also rotate counterclockwise, thereby prompting the clamp boss 5-3 and the clamp groove 5-4 to disengage with the rotation of the rotating shaft 5-5, and the drill The tooth bracket 5-2 is folded inward as a whole.
  • the supporting protrusion 5-6 and the bottom groove 4-1 are disengaged, and the liftable drill bit 5 is moved up from the inner cavity of the pipe pile 4 under the drive of the tie rod 7.
  • the pipe pile connector 3 and the pipe pile 4 are disengaged by the upper end 7-1 of the pull rod end driving the pipe pile connector bottom cover 3-1 to move upward and out of the inner cavity of the pipe pile 4.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Paleontology (AREA)
  • Earth Drilling (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
PCT/CN2020/100738 2020-04-17 2020-07-08 自钻式管柱支护装置及其方法 WO2021208270A1 (zh)

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JP2021573723A JP7103613B2 (ja) 2020-04-17 2020-07-08 セルフドリル式管柱サポート装置及びその方法

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114293546A (zh) * 2021-12-28 2022-04-08 山东省公路桥梁建设集团有限公司 一种穿越溶洞桩基双护筒支护、碎石加固施工方法
CN117145389A (zh) * 2023-10-31 2023-12-01 山东港口烟台港集团有限公司 一种海洋工程施工用的地基冲击式钻进装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115341544A (zh) * 2022-08-31 2022-11-15 湖北固邦岩创科技有限公司 一种可拆卸螺旋压入件、管桩扭转压入装置及施工方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004042195A1 (de) * 2004-08-26 2006-03-09 Roman Franz Erdbohrsystem
EP1837481A1 (en) * 2006-03-24 2007-09-26 Mitsubishi Materials Corporation Drilling tool and drilling method
CN205638313U (zh) * 2016-03-14 2016-10-12 中交二航局第四工程有限公司 一种套钻打捞处理埋钻装置
CN106401625A (zh) * 2016-11-29 2017-02-15 湖南科技大学 一种可实现交叉锚固的可钻进锚杆装置及施工方法
CN106812464A (zh) * 2015-12-01 2017-06-09 成都德善能科技有限公司 一种旋挖静压杆
CN109736715A (zh) * 2019-01-18 2019-05-10 江苏东合南岩土科技股份有限公司 变截面螺旋钻具及变截面钻孔灌注桩的施工方法
CN209082497U (zh) * 2018-09-06 2019-07-09 福建大力新型建材科技有限公司 一种建筑用带有高强度钻头的新型管桩
CN110700760A (zh) * 2019-10-24 2020-01-17 福州大学 一种多支盘锚固体系扩孔设备及施工方法
CN210264529U (zh) * 2019-06-13 2020-04-07 郑州大学 一种有效直径可调控的钻头

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422806A (en) * 1981-02-17 1983-12-27 Chevron Research Company Sliding tension leg tower
JP4478591B2 (ja) 2005-02-09 2010-06-09 株式会社大林組 拡幅掘削装置及び杭坑拡幅方法
CN2895696Y (zh) * 2005-11-03 2007-05-02 南京路鼎搅拌桩特种技术有限公司 多功能自动扩径钻头
WO2008147071A1 (en) * 2007-05-25 2008-12-04 Yoon, Byung Wa Hammer bit
JP2013133627A (ja) 2011-12-26 2013-07-08 Yahagi Construction Co Ltd 拡径掘削装置及び該拡径掘削装置を使用する削孔工法
CN102561946B (zh) * 2012-02-01 2014-07-23 山河智能装备股份有限公司 一种随钻跟管钻机及随钻跟管桩施工方法
JP6544724B2 (ja) 2016-11-29 2019-07-17 アビエンジニアリング株式会社 パイプアンカーの埋設装置
CN208184664U (zh) * 2018-05-10 2018-12-04 西安科技大学 一种变径扩孔提高瓦斯抽采浓度的扩孔钻头

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004042195A1 (de) * 2004-08-26 2006-03-09 Roman Franz Erdbohrsystem
EP1837481A1 (en) * 2006-03-24 2007-09-26 Mitsubishi Materials Corporation Drilling tool and drilling method
CN106812464A (zh) * 2015-12-01 2017-06-09 成都德善能科技有限公司 一种旋挖静压杆
CN205638313U (zh) * 2016-03-14 2016-10-12 中交二航局第四工程有限公司 一种套钻打捞处理埋钻装置
CN106401625A (zh) * 2016-11-29 2017-02-15 湖南科技大学 一种可实现交叉锚固的可钻进锚杆装置及施工方法
CN209082497U (zh) * 2018-09-06 2019-07-09 福建大力新型建材科技有限公司 一种建筑用带有高强度钻头的新型管桩
CN109736715A (zh) * 2019-01-18 2019-05-10 江苏东合南岩土科技股份有限公司 变截面螺旋钻具及变截面钻孔灌注桩的施工方法
CN210264529U (zh) * 2019-06-13 2020-04-07 郑州大学 一种有效直径可调控的钻头
CN110700760A (zh) * 2019-10-24 2020-01-17 福州大学 一种多支盘锚固体系扩孔设备及施工方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114293546A (zh) * 2021-12-28 2022-04-08 山东省公路桥梁建设集团有限公司 一种穿越溶洞桩基双护筒支护、碎石加固施工方法
CN114293546B (zh) * 2021-12-28 2023-06-23 山东省公路桥梁建设集团有限公司 一种穿越溶洞桩基双护筒支护、碎石加固施工方法
CN117145389A (zh) * 2023-10-31 2023-12-01 山东港口烟台港集团有限公司 一种海洋工程施工用的地基冲击式钻进装置
CN117145389B (zh) * 2023-10-31 2024-04-12 山东港口烟台港集团有限公司 一种海洋工程施工用的地基冲击式钻进装置

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CN111472688A (zh) 2020-07-31
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CN111472688B (zh) 2021-06-22

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