CN107574816B - Detachable rotation type drilling tubular pile and construction method - Google Patents
Detachable rotation type drilling tubular pile and construction method Download PDFInfo
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- CN107574816B CN107574816B CN201710827814.6A CN201710827814A CN107574816B CN 107574816 B CN107574816 B CN 107574816B CN 201710827814 A CN201710827814 A CN 201710827814A CN 107574816 B CN107574816 B CN 107574816B
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Abstract
The invention discloses a detachable rotation type drilling tubular pile, which comprises: the tubular pile is of a hollow structure; the movable joint is slidably sleeved on the traction guide pipe, the lower end of the movable joint is fixedly connected with the traction wire, and the movable joint can be vertically moved in the tubular pile; the drill rod is fixedly connected with the lower end of the movable joint and is positioned in the tubular pile; the drill bit is arranged at the bottom of the drill rod, is connected with the driving mechanism and drives the drill bit to rotate through the driving mechanism; the drill bit includes mechanical drill bit and a plurality of high pressure water jet nozzle, a plurality of high pressure water jet nozzle locate on the mechanical drill bit, it is a plurality of high pressure water jet nozzle is different incline direction settings. The invention overcomes the problem that the pipe pile is difficult to penetrate into the rock stratum in the pile sinking construction process; the pile body damage caused in the pile sinking process is reduced, and the soil plug effect in the pile sinking process of the tubular pile is reduced. The construction is convenient and simple, and the implementation is convenient.
Description
Technical Field
The invention relates to the field of building construction, in particular to a detachable rotation type drilling tubular pile and a construction method.
Background
The prestressed concrete pipe pile has been widely popularized through rapid development for many years, and is widely applied to the engineering fields of buildings, roads, bridges, ports and the like. The pipe pile industry can be continuously developed along with the continuous improvement of the basic construction of China in a long time in the future. At present, pile sinking technologies for concrete pipe piles mainly include three types: static pressure, hammering, vibration.
Static pressure construction is a pile-forming process for pressing prefabricated pile into soil by means of dead weight of pile-pressing mechanism of static pile-pressing machine and counter-force of counterweight on pile frame. The static pressure method has the following disadvantages: 1. the pile body of the tubular pile is easy to be clamped and broken by overlarge pile pressing force, so that the tubular pile has longitudinal cracks; 2. the pile end is difficult to penetrate into a hard rock surface, and the design requirement of the rock-socketed pile cannot be met; 3. the construction is not suitable for the site with more underground barriers or boulders; 4. creating a soil plug effect.
The hammering construction is that the piston in the hammer body moves upwards to a certain height by diesel oil combustion or hydraulic drive, then the piston falls freely, and the generated impact force acts on the pile top of the pipe pile to cause the pipe pile to sink. The pipe pile sinks to a certain depth, and the frictional resistance of the pile body of the pipe pile and the surrounding soil body and the end resistance of the pile tip act together to achieve the construction method for designing the bearing capacity. The hammering method has the following disadvantages: 1. the construction is noisy and pollutes the environment, and the construction is limited in city centers and at night; 2. excessive pile hammering force can cause certain damage to a pile body; 3. the pile end is difficult to penetrate into a hard rock surface, and the design requirement of the rock-socketed pile cannot be met; 4. the construction is not suitable for the site with more underground barriers or boulders; 5. there is a soil plug effect.
The vibration method is that a vibration hammer is rigidly connected on the tubular pile to form a vibration system. Several pairs of eccentric blocks on the shaft in the hammer rotate relatively to generate vibration force, so that the vibration system vibrates up and down to force the soil layer contacting with the pile to vibrate correspondingly, the soil layer strength is reduced, and the resistance is reduced, thereby the pile is sunk into the soil under the action of the weight of the vibration system. However, the vibration method has the following disadvantages: 1. the foundation is greatly influenced by vibration and is still difficult to penetrate when meeting a hard interlayer; 2. the vibrating hammer has a complex structure and is difficult to maintain; 3. hydraulic hammers are expensive.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a detachable rotation type drilling tubular pile, so that the defects that the traditional construction method is difficult to enter rocks, the pile body is damaged, the bearing capacity of a pile foundation is reduced and the like when a concrete tubular pile is sunk are overcome.
The invention further aims to provide a construction method of the detachable rotation type drilled pipe pile.
In order to achieve the above object, the present invention provides a detachable rotation type drilling pipe pile, comprising: the tubular pile is of a hollow structure; the movable joint is slidably sleeved on the traction guide pipe, the lower end of the movable joint is fixedly connected with the traction wire, and the movable joint can be vertically moved in the tubular pile; the drill rod is fixedly connected with the lower end of the movable joint and is positioned in the tubular pile; the drill bit is arranged at the bottom of the drill rod, is connected with the driving mechanism and drives the drill bit to rotate through the driving mechanism; the drill bit comprises a mechanical drill bit and a plurality of high-pressure water jet nozzles, the high-pressure water jet nozzles are arranged on the mechanical drill bit, and the high-pressure water jet nozzles are arranged in different inclination directions; wherein, under the state of drilling, the drill bit extends beyond the tubular pile bottom.
Preferably, in the above technical solution, the movable joint is a detachable movable joint and is in an umbrella-shaped mechanical structure.
Preferably, in the above technical solution, the movable joint includes: the sleeve is sleeved on the traction guide pipe in a sliding way; the support rods are arranged on the sleeve; the plurality of telescopic rods are arranged in one-to-one correspondence with the support rods, and one end of each telescopic rod is hinged with the support rod; one end of the pull rope is arranged at the hinged position of the support rod and the telescopic rod, and the other end of the pull rope is connected with the spiral rod; wherein, under the state of carrying out drilling work, the other end of telescopic link to extend in the tubular pile stake wall, the telescopic link is in the state of stretching.
Preferably, among the above-mentioned technical scheme, the tubular pile inner wall is equipped with the locating hole, under the user state, the edge of activity joint is located in the locating hole.
Preferably, in the above technical solution, the drill rod is an auger rod.
Preferably, in the above technical scheme, a high-pressure water jet conduit is arranged in the mechanical drill bit, the high-pressure water jet conduit is connected with the high-pressure water jet nozzle, and the high-pressure water jet conduit extends into the traction conduit.
Preferably, in the above technical scheme, the mechanical drill bit includes a vertical drilling drill bit and a horizontal cutting drill bit, the vertical drilling drill bit is disposed at the middle portion, and the horizontal cutting drill bit is disposed around the vertical drilling drill bit.
Preferably, in the above technical scheme, the middle of the vertical drilling bit is provided with a plurality of high-pressure water jet nozzles arranged in different inclination directions.
Preferably, in the above technical solution, a plurality of obliquely arranged high-pressure water jet nozzles are arranged on the side surface of the drill bit corresponding to the horizontal cutting drill.
Preferably, in the above technical solution, the driving mechanism is connected with a cable, and the traction wire and the cable are arranged in the traction guide tube.
Preferably, in the above technical solution, the driving mechanism is a motor.
A construction method of a detachable rotation type drilling tubular pile comprises the following steps:
(1) installing a movable joint, extending the movable joint, the spiral drill rod and the drill bit into the tubular pile, extending the edge of the movable joint into a positioning hole reserved in the tubular pile, starting a driving mechanism, driving the spiral drill rod and the drill bit to rotate under the traction action of the driving mechanism, expanding a framework of the movable joint under the traction of the spiral drill rod, and stopping driving the driving mechanism to work after the movable joint is completely expanded to finish the installation of the movable joint;
(2) sinking the pile, starting a driving mechanism, and enabling the drill bit to drill downwards;
(3) the drill bit is recovered, the driving mechanism is driven to rotate reversely, the edge of the movable joint contracts, the movable joint is separated from the tubular pile, and the drill bit is pulled out;
preferably, in the above technical scheme, the slag is discharged from the soil and the crushed stones generated in the pile sinking process in the step (2).
Compared with the prior art, the invention has the following beneficial effects:
(1) the detachable rotation type drilling tubular pile directly connects the drill bit with the tubular pile through the detachable movable joint to form the detachable rotation type drilling tubular pile. The detachable movable joint is of an umbrella-shaped structure, so that the drill bit is convenient to install, fix and recycle.
(2) The drill bit is embedded with a motor and is provided with a high-pressure water jet conduit, and the drill bit can rotate under the driving of the motor. The drill bit comprises a mechanical drill bit and a plurality of high-pressure water jet nozzles, and the high-pressure water jet nozzles are connected with the high-pressure water jet guide pipe. The high-pressure water jet guide pipes are arranged on the mechanical drill bit in different inclined directions. The mechanical drill bit breaks rock by using the cutting force generated by the high strength and high-speed rotation of the drill bit material, and the high-pressure water jet nozzles break rock by using a plurality of high-pressure water jet nozzles in different inclination directions arranged on the side surface of the drill bit to destroy the rock, so that the auxiliary drill bit is rotated into the rock, and the aim of reaming is fulfilled by controlling the impact force of the high-pressure water jet nozzles. The drill bit can penetrate through the hard interlayer or be driven into the hard rock stratum according to the design strength requirement, so that the tubular pile is driven into the designed elevation. The equipment is simple and reliable, is convenient to recycle, solves the problem that rock is difficult to break by the traditional tubular pile construction technology, greatly improves the construction efficiency of tubular pile sinking, and saves the construction cost.
(3) The spiral drill rod device is designed to treat the muck, so that the soil plug formed in the pile sinking process is reduced.
(4) The invention overcomes the problem that the tubular pile is difficult to penetrate into the rock stratum in the pile sinking construction process, and greatly improves the engineering efficiency; the problem that the tubular pile is not suitable for being constructed in a place with more underground obstacles or boulders is solved; the damage of the pile body caused in the pile sinking process is reduced, and the integral performance of the pile foundation is improved; and the soil plug effect in the pile sinking process of the tubular pile is reduced. The construction method is simple, convenient to implement and easy to master.
Drawings
Fig. 1 is a schematic structural diagram of a drill bit in a detachable autorotation type drill pipe pile before installation and fixation according to the invention.
Fig. 2 is a schematic structural view of the detachable autorotation type drill pipe pile after the drill bit is installed and fixed.
Fig. 3 is a schematic structural view of a drill bit in a detachable autorotation type drill pipe pile according to the invention.
Fig. 4 is a top view of a drill bit in a detachable autorotation type drill pipe pile according to the present invention.
Fig. 5 is a schematic diagram of a construction process of a detachable autorotation type drilled pipe pile.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1 to 5, a detachable autorotation type drilling pipe pile according to an embodiment of the present invention includes a pipe pile 1, a movable joint 2, a drill rod 3 and a drill bit 4. Tubular pile 1 is hollow structure, and on traction catheter 5 was located to movable joint 2 slidable cover, the tubular pile inner wall was equipped with the locating hole, and under the user state, the edge of movable joint was located in the locating hole. The lower end is fixedly connected with a traction wire 6 (which is a steel wire rope). Under the state of drilling, the movable joint can be arranged in the tubular pile 1 in a vertically moving mode. The drill rod 3 is fixedly arranged at the lower end of the movable joint 2 and is positioned in the tubular pile 1. The drill bit 4 is arranged at the bottom of the drill rod 3, a driving mechanism is arranged in the drill bit, the driving mechanism is a motor 7, the drill bit is connected with the motor 7, and the motor 7 is connected with a cable. The drill bit 4 is driven to rotate by the motor 7. The drill bit comprises a mechanical drill bit 41 and a plurality of high-pressure water jet nozzles 42, wherein the high-pressure water jet nozzles 42 are arranged on the mechanical drill bit 41 and are arranged in different inclination directions. Under the state of drilling, the drill bit 4 is directly connected with the tubular pile 1 through the detachable movable joint 2, so that the detachable rotation type drilling tubular pile is formed. The drill bit extends beyond the bottom of the tubular pile. The detachable movable joint is of an umbrella-shaped structure, so that the drill bit is convenient to install, fix and recycle. A better technical proposal is that the movable joint 2 is a detachable movable joint and is in an umbrella-shaped mechanical structure. Specifically, the movable joint 2 includes: a sleeve 21 slidably sleeved on the traction catheter 5. A plurality of support rods 22 are arranged on the sleeve 21, and a telescopic rod 23 is correspondingly hinged to the other end of each support rod 22. One end of the pull rope 24 is arranged at the hinged position of the support rod and the telescopic rod, and the other end is fixedly connected with the screw rod 3. Under the state of carrying out drilling work, starter motor 7, motor 7 drive drill bit 4 rotates, and the drill bit rotates downwards, through the effect of stay cord 24, pulling sleeve 21 slides downwards, and the other end of telescopic link 23 extends to the locating hole in the tubular pile 1, and the telescopic link is in the state of stretching, accomplishes the installation of drill bit.
The concrete working mode of the movable joint is that a drill bit and a spiral drill rod are hoisted to corresponding positions from the top of the pile by using a pull wire steel wire rope in the integrated pipeline, after a framework of the movable joint is aligned to a reserved positioning hole in the pile wall on the inner side of the tubular pile, a motor is started, and the framework of the movable joint is gradually opened under the traction of the pull wire steel wire rope until the framework of the movable joint is completely opened. After the tail end of the movable joint framework completely extends into the pile wall, the sensor arranged on the movable joint receives a signal, the motor stops, and the installation and fixation process of the drill bit is completed. The recovery process is similar to the installation process, operating in reverse.
Preferably, the drill rod 3 is an auger rod, which is a hollow auger rod. The hollow spiral drill rod can assist the drill bit in deslagging, upwards extrude and convey soil and broken stones, and further shear and smash the soil and the broken stones. The principle of slag discharge is as follows: while drilling is taking place, the auger stem rotates with the drill bit. After the drill bit breaks the soil (rock) layer, the spiral drill rod and the inner wall of the pipe pile form a spiral conveyor, soil (rock) residue at the bottom of the hole is gradually conveyed upwards by the spiral blades on the drill rod, and the soil above the umbrella-shaped movable joint is continuously pushed upwards until the soil is discharged out of the hole.
As a preferred embodiment, the drill 4 comprises a mechanical drill 41 and a high-pressure water jet nozzle 42, the mechanical drill 41 is provided with a high-pressure water jet conduit, the high-pressure water jet conduit 43 is connected with the high-pressure water jet nozzle 42, and the high-pressure water jet conduit extends into the traction conduit 5. The mechanical drill bit 41 comprises a vertical drilling bit 411 and a horizontal cutting bit 412, the vertical drilling bit 411 being arranged in the middle and the horizontal cutting bit 412 being arranged around the vertical drilling bit. The middle part of the vertical drilling bit 411 is provided with 3 high-pressure water jet nozzles 421 arranged in different inclined directions, the side surface of the bit corresponding to the horizontal cutting bit 412 is provided with two high-pressure water jet nozzles 422 arranged in two inclined directions corresponding to the high-pressure water jet nozzles, and the inclined direction of the high-pressure water jet nozzles 422 is consistent with the rotating direction of the horizontal cutting bit 412 during drilling. The mechanical drill bit breaks rock by using the cutting force generated by the high strength and high-speed rotation of the drill bit material, and the high-pressure water jet nozzles break rock by using a plurality of high-pressure water jet nozzles in different inclination directions arranged on the side surface of the drill bit to destroy the rock, so that the auxiliary drill bit is rotated into the rock, and the aim of reaming is fulfilled by controlling the impact force of the high-pressure water jet nozzles. The drill bit can penetrate through the hard interlayer or be driven into the hard rock stratum according to the design strength requirement, so that the tubular pile is driven into the designed elevation.
Inclined high pressure water jet nozzles are provided at the side and bottom of the drill bit to facilitate reaming and breaking of the rock, thereby assisting the drill bit in threading into the rock. The working principle of the high-pressure water jet device is as follows: the flow, the pressure and the direction of the high-pressure water jet are set through the high-pressure water jet generating and controlling device according to the geological conditions of a working place, the high-pressure water jet generating and controlling device generates and controls the flow, the pressure and the direction of high-pressure water, and then the high-pressure water is conveyed to the nozzle at the end part of the drill bit body through the high-pressure water jet guide pipe and is sprayed out to form huge impact force which is uniformly distributed around and in the middle of the front end of the drill bit body to break up soil blocks and hard stone blocks at the front end. When the drill bit rotates, the high-pressure water jet emitted from the side surface of the drill bit can form transverse shearing force to fully break up surrounding hard stone blocks.
Preferably, the high-pressure water jet nozzle is connected with the high-pressure water jet guide pipe, the motor is connected with the cable, and the traction wire, the high-pressure water jet guide pipe and the cable are arranged in the traction guide pipe. The functions of power supply and relevant control of the embedded motor of the drill bit, conveying of high-pressure water jet, installation and recovery of the drill bit and the like can be integrated.
A construction method of a detachable rotation type drilling tubular pile comprises the following steps:
(1) installing a movable joint, as shown in fig. 5 i, extending the movable joint, the auger stem and the drill bit into the tubular pile, extending the edge of the movable joint into a positioning hole reserved in the tubular pile, starting a driving mechanism, driving the auger stem and the drill bit to rotate under the traction of the driving mechanism, expanding a framework of the movable joint under the traction of the auger stem, and stopping driving the driving mechanism to work after the movable joint is completely expanded to complete the installation of the movable joint;
(2) tunneling before entering the rock, as shown in II in figure 5, after the movable joint, the spiral drill rod and the drill bit are installed, the drill bit starts tunneling, and the tubular pile starts sinking;
(3) breaking rock and sinking pile, as shown in fig. 5 III, starting a driving mechanism, starting a drill bit to tunnel downwards, utilizing a spiral drill rod to discharge slag upwards, and utilizing a high-pressure water jet generation and control device to adjust the flow, pressure and direction of water jet when encountering a hard rock stratum so as to assist in breaking rock and reaming;
(4) and (4) recovering the drill bit, as shown in IV in figure 5, driving the driving mechanism to rotate reversely, shrinking the edge of the movable joint, separating the tubular pile, and pulling out the drill bit.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (5)
1. The utility model provides a can dismantle rotation formula drilling tubular pile which characterized in that includes:
the tubular pile is of a hollow structure;
the movable joint is slidably sleeved on the traction guide pipe, the lower end of the movable joint is fixedly connected with the traction wire, and the movable joint can be vertically moved in the tubular pile;
the drill rod is fixedly connected with the lower end of the movable joint and is positioned in the tubular pile, and the drill rod is a spiral drill rod; and
the drill bit is arranged at the bottom of the drill rod, is connected with the driving mechanism and drives the drill bit to rotate through the driving mechanism; the drill bit comprises a mechanical drill bit and a plurality of high-pressure water jet nozzles, the high-pressure water jet nozzles are arranged on the mechanical drill bit, and the high-pressure water jet nozzles are arranged in different inclination directions; wherein, in a drilling state, the drill bit extends out of the bottom of the tubular pile; the mechanical drill bit comprises a vertical drilling drill bit and a horizontal cutting drill bit, the vertical drilling drill bit is arranged in the middle, and the horizontal cutting drill bit is arranged around the vertical drilling drill bit; the middle part of the vertical drilling bit is provided with a plurality of high-pressure water jet nozzles which are arranged in different inclined directions; a plurality of high-pressure water jet nozzles which are obliquely arranged are arranged on the side surface of the drill bit corresponding to the horizontal cutting drill bit;
wherein the movable joint comprises:
the sleeve is sleeved on the traction guide pipe in a sliding way;
the support rods are arranged on the sleeve;
the plurality of telescopic rods are arranged in one-to-one correspondence with the support rods, and one end of each telescopic rod is hinged with the support rod; and
one end of the pull rope is arranged at the hinged position of the support rod and the telescopic rod, and the other end of the pull rope is connected with the spiral rod;
under the state of drilling, the other end of the telescopic rod extends into the wall of the tubular pile, and the telescopic rod is in an extended state; and the inner wall of the tubular pile is provided with a positioning hole, and in a use state, the edge of the movable joint is arranged in the positioning hole.
2. The detachable rotation type drilling pipe pile according to claim 1, wherein the movable joint is a detachable movable joint and is of an umbrella-shaped mechanical structure.
3. The detachable rotation type drilling tubular pile according to claim 1, wherein a high-pressure water jet guide pipe is arranged in the mechanical drill bit and connected with the high-pressure water jet nozzle, and the high-pressure water jet guide pipe extends into the traction guide pipe.
4. The detachable auto-rotating drilling pipe pile according to claim 1, wherein the driving mechanism is connected with a cable, and the traction line and the cable are arranged in the traction guide pipe.
5. The construction method of the detachable self-rotating type drilled pipe pile according to claim 1, characterized by comprising the following steps:
(1) installing a movable joint, extending the movable joint, the spiral drill rod and the drill bit into the tubular pile, extending the edge of the movable joint into a positioning hole reserved in the tubular pile, starting a driving mechanism, driving the spiral drill rod and the drill bit to rotate under the traction action of the driving mechanism, expanding a framework of the movable joint under the traction of the spiral drill rod, and stopping driving the driving mechanism to work after the movable joint is completely expanded to finish the installation of the movable joint;
(2) pile sinking, starting a driving mechanism to enable a drill bit to drill downwards, and discharging slag from soil and gravels generated in the pile sinking process;
(3) and (4) recovering the drill bit, driving the driving mechanism to rotate reversely, contracting the edge of the movable joint, separating from the tubular pile, and pulling out the drill bit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710827814.6A CN107574816B (en) | 2017-09-14 | 2017-09-14 | Detachable rotation type drilling tubular pile and construction method |
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| CN201710827814.6A CN107574816B (en) | 2017-09-14 | 2017-09-14 | Detachable rotation type drilling tubular pile and construction method |
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| CN107574816B true CN107574816B (en) | 2021-03-26 |
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| 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 |
| 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 |
| EP3953531A1 (en) * | 2019-04-09 | 2022-02-16 | GBM Works B.V. | A foundation pile |
| 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 |
| CN113550305B (en) * | 2021-08-27 | 2022-12-27 | 重庆大学 | Construction method and drill bit for high-pressure water jet stiffening core composite pile of hard soil interlayer foundation |
| 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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| CN101215836B (en) * | 2007-12-29 | 2010-07-21 | 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 |
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