CN114108604A - Automatic pile sinking implantation method in high backfill region - Google Patents
Automatic pile sinking implantation method in high backfill region Download PDFInfo
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- CN114108604A CN114108604A CN202111532735.5A CN202111532735A CN114108604A CN 114108604 A CN114108604 A CN 114108604A CN 202111532735 A CN202111532735 A CN 202111532735A CN 114108604 A CN114108604 A CN 114108604A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/48—Piles varying in construction along their length, i.e. along the body between head and shoe, e.g. made of different materials along their length
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/56—Screw piles
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- 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
- E02D7/22—Placing by screwing down
Abstract
The invention belongs to the technical field of concrete pipe pile sinking, and discloses an automatic pile sinking implantation method in a high backfill region, which aims to solve the problem of high construction cost caused by implantation according to the operation experience of a driver. The automatic implantation method comprises a controller, the concrete pipe pile, the rotary excavating machine and a clamping mechanism, wherein the controller is used for controlling the working state of the rotary excavating machine, and the automatic implantation method comprises the following steps: (1) preparing a concrete pipe pile in advance, wherein the periphery of the concrete pipe pile is provided with a large-pitch thread; (2) the method comprises the following steps that a clamping mechanism is installed on a rotating head of a rotary excavator, a concrete pipe pile is clamped by a clamping framework, the central axis of the concrete pipe pile is aligned with an implanted position, and a torque sensor is installed between the clamping mechanism and the concrete pipe pile; (3) the rotary excavating machine starts to rotate to drive the concrete pipe pile to be implanted into a high backfill region in a rotating mode; (4) the torque sensor collects torque information between the clamping mechanism and the concrete pipe pile and transmits the torque information to the controller, and the controller controls the rotary excavating machine to execute corresponding actions according to the received torque information.
Description
Technical Field
The invention belongs to the technical field of concrete pipe pile sinking, and particularly relates to an automatic pile sinking implantation method in a high backfill region.
Background
In the high backfill region, because the soil body is soft and the density of the soil body is not enough, the bearing capacity of the soil body is generally improved by a pile planting mode in the high backfill region.
At present, a plurality of pile sinking methods for precast concrete tubular piles are adopted: the method mainly comprises the construction methods of a hammering method, a static pressure method, a hole-leading pile-sinking method, a drilling pile-planting method, a middle digging method and the like. The hammering method is characterized in that: the construction method has no relation with the depth of the supporting layer and the underground water, and can be used for construction on various soil qualities; construction management can be carried out according to the recording during driving, and the bearing capacity of all piles can be mastered; but the construction will produce vibration and noise, and the diesel pile driver will emit oil smoke. The pre-drilling construction method has the advantages of small vibration and noise, less damage to a pile body during construction, soil formation in a digging hole when the pile is dug by a drill rod, even if a sand layer and a hole wall are little collapsed, less soil discharge amount when a pile tip is open, higher verticality when the pile is buried by rotation, less residual amount of a pile head, high construction precision, no need of investigating the influence on the surrounding environment when the foundation is widened, but attention needs to be paid to prevent the flow of a fixing liquid and a foundation protection liquid around the pile, and the distribution condition of a supporting layer needs to be fully investigated in advance. The layer construction method of digging vibrates, the noise is less, excavates along the cavity of stake, and the stake plays sheathed tube effect, sinks when excavating, and is less to the influence of surrounding building, even continuous more closely knit sand bed, also is under construction easily, sinks to put and can stand great pressure and lightly hammer, so the pile head can be more parallel and level.
The pile-sinking method is a new construction method which is rapidly developed in recent years, has obvious advantages compared with the conventional hammering method or static pressure method, and in some areas with dense buildings or complicated geology, the pile pipe adopts the direct hammering method or the static pressure method, on one hand, the pile sinking is difficult, the resistance is large, the pile body is easy to damage when the pile pipe is forced to pass through, and on the other hand, the peripheral buildings or the pipe network lines are easy to be influenced to a certain extent after the soil body is extruded. The pile sinking by adopting the implantation method can be realized by pre-drilling to a determined holding force layer and then implanting the pile, so that the driving quality of the tubular pile can be better ensured. The pile form is characterized in that pile sinking resistance of the pile tip of the tubular pile is reduced by a pre-hole forming mode, and in addition, the post-grouting filling is carried out on the gaps between the tubular pile and the hole wall of the formed hole and the gaps between the tubular pile and the side wall soil layer, so that the pile side resistance of the high-strength prestressed tubular pile can be effectively improved, and the requirement of improving the bearing capacity of a single pile is met.
At present, a pile planting method is generally adopted to plant a precast concrete pipe pile in a high backfill region, but the construction method has the problem of low efficiency, although the drilling speed of a pile hole in the high backfill region is high, the pipe pile can be planted in the soil body only by using modes such as hammering or static pressure due to the fact that the hole crossing condition frequently occurs due to the poor compactness of the soil body, and the construction period is long and the construction cost is high.
In addition, in the prior art, when hammering, static pressure and pile sinking implantation methods are adopted, implantation is carried out according to the operation experience of a driver, the state of the concrete pipe pile can be judged in a detection mode after implantation, and only the concrete pipe pile can be abandoned and implanted again after damage is detected after implantation is finished.
Disclosure of Invention
The invention provides an automatic pile sinking implantation method in a high backfill region, which aims to solve the problem of high construction cost caused by implantation according to the operation experience of a driver, and can greatly improve the efficiency of pipe pile implantation in the high backfill region and reduce the cost of pipe pile implantation.
In order to solve the technical problem, the technical scheme adopted by the invention is as follows:
the automatic pile sinking implantation method in the high backfill region is characterized by comprising a controller, a concrete pipe pile, a rotary excavating machine and a clamping mechanism, wherein the controller is used for controlling the working state of the rotary excavating machine, and the automatic implantation method comprises the following steps:
(1) preparing a concrete pipe pile in advance, wherein the periphery of the concrete pipe pile is provided with a large-pitch thread;
(2) the method comprises the following steps that a clamping mechanism is installed on a rotating head of a rotary excavator, a concrete pipe pile is clamped by a clamping framework, the central axis of the concrete pipe pile is aligned with an implanted position, and a torque sensor is installed between the clamping mechanism and the concrete pipe pile;
(3) the rotary excavating machine starts to rotate to drive the concrete pipe pile to be implanted into a high backfill region in a rotating mode;
(4) the torque sensor collects torque information between the clamping mechanism and the concrete pipe pile and transmits the torque information to the controller, and the controller controls the rotary excavating machine to execute corresponding actions according to the received torque information; and if the torque information received by the torque sensor reaches 70-80% of the torsional strength of the concrete pipe pile, the controller controls the rotary excavator to rotate reversely for a certain time, then controls the rotary excavator to lift upwards for a certain height, and then controls the rotary excavator to rotate forwards again to drive the concrete pipe pile to be implanted into a high backfill region.
In some embodiments, the torque resistance strength of the concrete pipe pile and the position where each concrete pipe pile is implanted are recorded in the controller in advance.
In some embodiments, the controller is located on the rotary excavator or on the handheld terminal.
In some embodiments, the lower end of the concrete pipe pile has a truncated cone-shaped or conical tip.
In some embodiments, fixture includes the fixed end plate that is used for with the rotating head interconnect of rotary machine, the first grip block of below fixedly connected with of fixed end plate, first grip block articulates there is the second grip block, the cavity that first grip block and second grip block formed can cladding concrete pipe pile and with the mutual adaptation of concrete pipe pile's external diameter.
In some embodiments, one side of the first clamping plate and one side of the second clamping plate are hinged to each other through a pin shaft, and the other side of the first clamping plate and the other side of the second clamping plate are detachably connected through a locking screw and a locking nut.
In some embodiments, a guide rod is arranged in the middle of the fixed end plate, a squeezing barrel is arranged on the periphery of the guide rod, the length of the squeezing barrel is matched with the inner depth of the concrete pipe pile, at least two sliding grooves are formed in the squeezing barrel and are arranged in the vertical direction, strip-shaped grooves communicated with the sliding grooves are formed in the outer circumferential wall and the inner circumferential wall of the squeezing barrel, a squeezing block is arranged in each sliding groove, and the inner side face of the squeezing block can extend into the inner cavity of the squeezing barrel and is attached to the guide rod inserted into the inner cavity of the squeezing barrel.
In some embodiments, the guide rod has a rectangular transverse cross section, at least two surfaces of the guide rod are inclined surfaces, and the inner side surface of the extrusion block, which extends into the inner cavity of the extrusion container, is a wedge-shaped surface matched with the inclined surfaces.
In some embodiments, the sliding groove is provided with a return spring for returning the extrusion block.
In some embodiments, the rotary excavating machine rotates the first clamping plate and the second clamping plate together to be screwed into soil in the high backfill region when being planted, then excavates the bottom exposed out of the first clamping plate and the second clamping plate, loosens the locking screw and the locking nut of the first clamping plate and the second clamping plate, and lifts the rotary excavating machine to drive the clamping mechanism to be separated from the concrete tubular pile.
Compared with the prior art, the invention has the following beneficial effects:
according to the automatic pile sinking implantation method in the high backfill region, the controller is used for controlling the rotary digging machine to perform corresponding actions, compared with the prior art that a manual driving rotary digging mode is adopted, the labor intensity can be greatly reduced, the working state can be adjusted according to set parameters, compared with the manual driving mode, the implantation process of the concrete pipe pile can be accurately controlled, and the risk of damage to the implanted concrete pipe pile is greatly reduced. In the prior art, when a vertical pile is implanted, the operation is generally carried out by the experience of a driver, the problem of damage of the concrete pipe pile is very easy to occur, the state of the concrete pipe pile can be judged by a detection mode after the concrete pipe pile is implanted, and the concrete pipe pile can be abandoned and implanted again after the damage is detected after the concrete pipe pile is implanted. The working state of the rotary excavating machine is controlled by the controller, on one hand, the rotary excavating machine is implanted according to set parameters (torsional strength) and can be adjusted in time according to the situation; on the other hand, even when moment is greater than the torsional strength of this concrete pipe pile, also can in time discover through torque sensor to stop the implantation of high concrete pipe pile, thereby greatly reduced this concrete pipe pile back end is implanted and is detected the cost that the cost spent.
The invention directly utilizes the clamping mechanism to clamp the concrete pipe pile, and then utilizes the downward pressure and the rotation action of the rotary excavating machine to implant the concrete pipe pile into the soil body of the high backfill region, thereby completing the foundation reinforcement of the high backfill region. Compared with the prior art that a hammering mode is adopted, the concrete pipe pile can be prevented from being damaged by hammering (particularly, when the concrete pipe pile in a high backfill region meets boulders, the pipe pile is particularly easy to damage); compared with a static pressure implantation mode, the implantation speed of the concrete pipe pile can be improved; compared with a pile-sinking implantation method, pile holes do not need to be formed, the backfill amount of the pile holes is greatly reduced (only the first clamping plate and the second clamping plate need to be dug and backfilled), and the construction period and the cost can be greatly reduced.
According to the clamping mechanism, the first clamping plate and the second clamping plate can be used for clamping the concrete pipe pile from the outside, the extrusion block is extruded to slide in the sliding groove by utilizing the mutual matching between the inclined surface of the guide rod and the wedge-shaped surface on the extrusion block, so that the extrusion block extends out of the strip-shaped groove and is in contact and abutted with the inner wall of the concrete pipe pile, the acting force of the rotary excavator during rotation is gradually transmitted to the whole concrete pipe pile, and the condition that the concrete pipe pile is damaged during rotary implantation is avoided. The pile sinking method of the invention is only suitable for the foundation reinforcement in high backfill areas. For other areas, the concrete pipe pile is easy to damage due to the fact that the density of rock and soil bodies is high. And the concrete pipe pile cannot be damaged due to the fact that the soil body in the high backfill region is soft and low in compactness.
Drawings
FIG. 1 is a schematic structural view of a clamping mechanism of the present invention;
FIG. 2 is a schematic view of the connection of a first clamping plate and a second clamping plate of the present invention;
FIG. 3 is a schematic view of the connection of the extrusion blocks to the extrusion container of the present invention;
the labels in the figure are: 1. fixed end plate, 2, first grip block, 3, second grip block, 4, guide bar, 5, recipient, 6, stay cord, 7, spout, 8, bar groove, 9, extrusion piece, 10, reset spring.
Detailed Description
The present invention will be further described with reference to the following examples, which are intended to illustrate only some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments used by those skilled in the art without any creative effort belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in conjunction with specific situations.
With reference to the attached drawings, the automatic pile sinking implantation method for the high backfill region comprises a controller, a concrete pipe pile, a rotary excavating machine and a clamping mechanism, wherein the controller is used for controlling the working state of the rotary excavating machine, and the automatic implantation method comprises the following steps:
(1) preparing a concrete pipe pile in advance, wherein the periphery of the concrete pipe pile is provided with a large-pitch thread;
(2) the method comprises the following steps that a clamping mechanism is installed on a rotating head of a rotary excavator, a concrete pipe pile is clamped by a clamping framework, the central axis of the concrete pipe pile is aligned with an implanted position, and a torque sensor is installed between the clamping mechanism and the concrete pipe pile;
(3) the rotary excavating machine starts to rotate to drive the concrete pipe pile to be implanted into a high backfill region in a rotating mode;
(4) the torque sensor collects torque information between the clamping mechanism and the concrete pipe pile and transmits the torque information to the controller, and the controller controls the rotary excavating machine to execute corresponding actions according to the received torque information; and if the torque information received by the torque sensor reaches 70-80% of the torsional strength of the concrete pipe pile, the controller controls the rotary excavator to rotate reversely for a certain time, then controls the rotary excavator to lift upwards for a certain height, and then controls the rotary excavator to rotate forwards again to drive the concrete pipe pile to be implanted into a high backfill region.
According to the automatic pile sinking implantation method in the high backfill region, the controller is used for controlling the rotary digging machine to perform corresponding actions, compared with the prior art that a manual driving rotary digging mode is adopted, the labor intensity can be greatly reduced, the working state can be adjusted according to set parameters, compared with the manual driving mode, the implantation process of the concrete pipe pile can be accurately controlled, and the risk of damage to the implanted concrete pipe pile is greatly reduced. In the prior art, when a vertical pile is implanted, the operation is generally carried out by the experience of a driver, the problem of damage of the concrete pipe pile is very easy to occur, the state of the concrete pipe pile can be judged by a detection mode after the concrete pipe pile is implanted, and the concrete pipe pile can be abandoned and implanted again after the damage is detected after the concrete pipe pile is implanted. The working state of the rotary excavating machine is controlled by the controller, on one hand, the rotary excavating machine is implanted according to set parameters (torsional strength) and can be adjusted in time according to the situation; on the other hand, even when moment is greater than the torsional strength of this concrete pipe pile, also can in time discover through torque sensor to stop the implantation of high concrete pipe pile, thereby greatly reduced this concrete pipe pile back end is implanted and is detected the cost that the cost spent.
In some embodiments, the torque resistance strength of the concrete pipe pile and the position where each concrete pipe pile is implanted are recorded in the controller in advance.
In some embodiments, the controller is located on the rotary excavator or on the handheld terminal. Because the pile planting is generally carried out in the field (or the working environment is relatively simple), the code for controlling the working state of the rotary excavating machine and the torsional strength of the concrete pipe pile are written into the rotary excavating machine or a handheld terminal by utilizing the prior art, and when the rotary excavating machine starts to carry out rotary implantation, the working state of the rotary excavating machine can be controlled by utilizing the controller. The driver is only assisted in clamping the concrete pipe pile and driving the rotary machine to the position of implantation. The concrete implantation process is completely operated by the controller, so that the concrete pipe pile is automatically implanted.
In some embodiments, the controller obtains the implantation depth of the rotary excavator (obtaining the descending height of a drill rod of the rotary excavator can obtain the implantation depth), and when the implantation depth reaches a set value, the controller controls the rotary excavator to stop rotating.
In some embodiments, the lower end of the concrete pipe pile has a truncated cone-shaped or conical tip. Thereby utilizing the pointed end to facilitate the concrete pipe pile to be eaten into the soil body in the high backfill region.
In some embodiments, fixture includes the fixed end plate 1 that is used for with the rotating head interconnect of rotary machine, the first grip block 2 of below fixedly connected with of fixed end plate 1, first grip block 2 articulates there is second grip block 3, and the cavity that first grip block 2 and second grip block 3 formed can the cladding concrete pipe pile and with the mutual adaptation of the external diameter of concrete pipe pile. The first clamping plate and the second clamping plate form a cylindrical structure, so that the concrete pipe pile is clamped in the first clamping plate and the second clamping plate.
In some embodiments, one side of the first clamping plate 2 and one side of the second clamping plate 3 are hinged to each other through a pin shaft, and the other side of the first clamping plate and the other side of the second clamping plate are detachably connected through a locking screw and a locking nut.
In some embodiments, a guide rod 4 is arranged in the middle of the fixed end plate 1, an extrusion cylinder 5 is arranged on the periphery of the guide rod 4, the length of the extrusion cylinder 5 is matched with the inner depth of the concrete pipe pile, at least two sliding grooves 7 arranged in the vertical direction are formed in the extrusion cylinder 5, a strip-shaped groove 8 communicated with the sliding grooves 7 is formed in the outer circumferential wall and the inner circumferential wall of the extrusion cylinder 5, an extrusion block 9 is arranged in the sliding grooves 7, the inner side surface of the extrusion block 9 can extend into the inner cavity of the extrusion cylinder and is attached to the guide rod inserted into the inner cavity of the extrusion cylinder, and the outer side surface of the extrusion block 9 can extend out of the strip-shaped groove and is in contact with the inner wall of the concrete pipe pile. That is to say, when the recipient slided in the spout, the medial surface of recipient can extend into the inner chamber of recipient and be used for contacting with the guide bar, and under the extrusion of guide bar, thereby the lateral surface that the recipient can extend the outer wall of recipient and contact with the inner wall of concrete pipe pile and support and hold.
Wherein, the torque sensor sets up the lateral surface at the inside wall of first grip block and second grip block and extrusion piece (be used for the side with concrete pipe pile contact).
In some embodiments, the guide rod 4 has a rectangular transverse cross section, at least two surfaces of the guide rod 4 are inclined surfaces, and the inner side surface of the extrusion block 9 extending into the inner cavity of the extrusion container 4 is a wedge-shaped surface matched with the inclined surfaces. That is, the inclined surface of the guide rod and the wedge-shaped surface of the extrusion block are matched with each other to drive the extrusion block to slide in the sliding groove.
In some embodiments, the sliding groove 7 has a return spring 10 therein for returning the pressing block 9. When the guide rod is separated and is not contacted with the extrusion block, under the action of the reset spring 10, the outer side surface of the extrusion block can retract into the extrusion cylinder (namely, the extrusion block is not contacted with the concrete pipe pile any more, so that the automatic separation of the extrusion cylinder and the concrete pipe pile is realized).
In some embodiments, the rotary excavating machine rotates the first clamping plate and the second clamping plate together to be screwed into soil in the high backfill region when being planted, then excavates the bottom exposed out of the first clamping plate and the second clamping plate, loosens the locking screw and the locking nut of the first clamping plate and the second clamping plate, and lifts the rotary excavating machine to drive the clamping mechanism to be separated from the concrete tubular pile.
Wherein the upper end of the guide rod 4 and the upper end of the extrusion container 5 are connected with each other by a pull rope 6. When the clamping mechanism is used for clamping, firstly, the extrusion cylinder is placed into the inner wall of the concrete pipe pile, then the concrete pipe pile and the extrusion cylinder are vertically lifted together in a lifting mode, then the guide rod is gradually inserted into the upper end of the concrete pipe pile, the extrusion block gradually extends out of the extrusion cylinder under the action of the guide rod along with the fact that the guide rod extends into the extrusion cylinder, when the guide rod is just inserted into the inner bottom of the concrete pipe pile, the extrusion block is just tightly attached to the concrete pipe pile, so that the concrete pipe pile is clamped on the clamping mechanism from the inner part of the concrete pipe pile, and then the pull rope is buckled, so that the guide rod and the extrusion cylinder are connected into a whole; and then the first clamping plate and the second clamping plate are connected together through a locking screw and a locking nut, so that the concrete pipe pile is coated from the outside. And then the concrete pipe pile is stably clamped on the clamping mechanism.
In some embodiments, in order to improve the clamping tightness of the concrete pipe pile, the outer cross section of the upper end of the concrete pipe pile is rectangular, and the first clamping plate and the second clamping plate form a rectangular clamping space.
Wherein, preferred, the height of first grip block and second grip block is 0.5-1m to carry out the centre gripping fastening to the upper segment of concrete pipe pile, and gradually disperse the effort to the upper segment of concrete pipe pile.
According to the automatic pile sinking implantation method for the high backfill region, the concrete pipe pile is directly clamped by the clamping mechanism, and then the concrete pipe pile is implanted into the soil body of the high backfill region by utilizing the downward pressure and the rotation action of the rotary excavator, so that foundation reinforcement of the high backfill region is completed. Compared with the prior art that a hammering mode is adopted, the concrete pipe pile can be prevented from being damaged by hammering (particularly, when the concrete pipe pile in a high backfill region meets boulders, the pipe pile is particularly easy to damage); compared with a static pressure implantation mode, the implantation speed of the concrete pipe pile can be improved; compared with a pile-sinking implantation method, pile holes do not need to be formed, the backfill amount of the pile holes is greatly reduced (only the first clamping plate and the second clamping plate need to be dug and backfilled), and the construction period and the cost can be greatly reduced.
According to the clamping mechanism, the first clamping plate and the second clamping plate can be used for clamping the concrete pipe pile from the outside, the extrusion block is extruded to slide in the sliding groove by utilizing the mutual matching between the inclined surface of the guide rod and the wedge-shaped surface on the extrusion block, so that the extrusion block extends out of the strip-shaped groove and is in contact and abutted with the inner wall of the concrete pipe pile, the acting force of the rotary excavator during rotation is gradually transmitted to the whole concrete pipe pile, and the condition that the concrete pipe pile is damaged during rotary implantation is avoided. The pile sinking method of the invention is only suitable for the foundation reinforcement in high backfill areas. For other areas, the concrete pipe pile is easy to damage due to the fact that the density of rock and soil bodies is high. And the concrete pipe pile cannot be damaged due to the fact that the soil body in the high backfill region is soft and low in compactness.
When a concrete pipe pile is implanted, a first clamping plate and a second clamping plate are firstly excavated, the connection between the first clamping plate and the second clamping plate is released, then a rotary excavator is used for driving a clamping mechanism to move upwards, a guide rod also moves upwards along with the clamping mechanism, an extrusion block loses the extrusion effect of the guide rod and automatically retracts under the action of a return spring, so that the extrusion block is separated from the inner wall of the concrete pipe pile, and when the guide rod continues to move upwards, an extrusion cylinder is driven to move upwards under the action of a pull rope, so that the concrete pipe pile is completely separated from the whole clamping mechanism.
Meanwhile, compared with the prior art that hammering, static pressure, pile sinking implantation and the like are adopted, the method can reduce disturbance to the soil body in the high backfill region.
Claims (10)
1. The automatic pile sinking implantation method in the high backfill region is characterized by comprising a controller, a concrete pipe pile, a rotary excavating machine and a clamping mechanism, wherein the controller is used for controlling the working state of the rotary excavating machine, and the automatic implantation method comprises the following steps:
(1) preparing a concrete pipe pile in advance, wherein the periphery of the concrete pipe pile is provided with a large-pitch thread;
(2) the method comprises the following steps that a clamping mechanism is installed on a rotating head of a rotary excavator, a concrete pipe pile is clamped by a clamping framework, the central axis of the concrete pipe pile is aligned with an implanted position, and a torque sensor is installed between the clamping mechanism and the concrete pipe pile;
(3) the rotary excavating machine starts to rotate to drive the concrete pipe pile to be implanted into a high backfill region in a rotating mode;
(4) the torque sensor collects torque information between the clamping mechanism and the concrete pipe pile and transmits the torque information to the controller, and the controller controls the rotary excavating machine to execute corresponding actions according to the received torque information; and if the torque information received by the torque sensor reaches 70-80% of the torsional strength of the concrete pipe pile, the controller controls the rotary excavator to rotate reversely for a certain time, then controls the rotary excavator to lift upwards for a certain height, and then controls the rotary excavator to rotate forwards again to drive the concrete pipe pile to be implanted into a high backfill region.
2. The automatic pile sinking implantation method for the high backfill region according to claim 1, wherein the torque resistance strength of the concrete pipe piles and the implantation positions of the concrete pipe piles are recorded in the controller in advance.
3. The method for automatically implanting driven piles in high backfill areas according to claim 1, wherein the controller is located on a rotary excavator or on a handheld terminal.
4. The automatic pile sinking implantation method for the high backfill region according to claim 1, wherein the lower end of the concrete pipe pile is provided with a truncated cone-shaped or conical tip.
5. The automatic pile sinking implantation method for the high backfill area according to claim 4, wherein the clamping mechanism comprises a fixed end plate which is used for being connected with a rotating head of a rotating machine, a first clamping plate is fixedly connected below the fixed end plate, the first clamping plate is hinged to a second clamping plate, and a cavity formed by the first clamping plate and the second clamping plate can cover the concrete pipe pile and is matched with the outer diameter of the concrete pipe pile.
6. The automatic pile driving and implanting method for the high backfill region according to claim 5, wherein one side of the first clamping plate and one side of the second clamping plate are hinged to each other through a pin shaft, and the other side of the first clamping plate and the other side of the second clamping plate are detachably connected through a locking screw and a locking nut.
7. The automatic pile sinking implanting method for the high backfill area according to claim 6, wherein a guide rod is arranged in the middle of the fixed end plate, an extrusion cylinder is arranged on the periphery of the guide rod, the length of the extrusion cylinder is matched with the inner depth of the concrete pipe pile, at least two sliding grooves are formed in the extrusion cylinder and are arranged in the vertical direction, strip-shaped grooves communicated with the sliding grooves are formed in the outer circumferential wall and the inner circumferential wall of the extrusion cylinder, an extrusion block is arranged in each sliding groove, and the inner side face of each extrusion block can extend into the inner cavity of the extrusion cylinder and is attached to the guide rod inserted into the inner cavity of the extrusion cylinder.
8. The method for automatically implanting the driven pile in the high backfill area according to claim 7, wherein the transverse section of the guide rod is rectangular, at least two surfaces on the guide rod are inclined surfaces, and the inner side surface of the extrusion block, which extends into the inner cavity of the extrusion container, is a wedge-shaped surface matched with the inclined surfaces.
9. The automatic pile driving method for high backfill area according to claim 8, wherein the chute has a return spring therein for returning the squeeze block.
10. The method for automatically implanting the driven pile in the high backfill area according to claim 9, wherein the rotary excavator rotates the first clamping plate and the second clamping plate together to implant the driven pile in the soil body in the high backfill area, excavates the soil body exposing the bottom of the first clamping plate and the bottom of the second clamping plate, loosens the locking screw and the locking nut of the first clamping plate and the second clamping plate, and lifts the rotary excavator to drive the clamping mechanism to separate from the concrete pipe pile.
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| CN109695245A (en) * | 2019-01-17 | 2019-04-30 | 福建省大地管桩有限公司 | The bitubular is exempted to beat tubular pole and lower stake device |
| CN214199967U (en) * | 2021-01-11 | 2021-09-14 | 中交四航工程研究院有限公司 | Device for monitoring height of soil core in tubular pile |
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2021
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695245A (en) * | 2019-01-17 | 2019-04-30 | 福建省大地管桩有限公司 | The bitubular is exempted to beat tubular pole and lower stake device |
| CN214199967U (en) * | 2021-01-11 | 2021-09-14 | 中交四航工程研究院有限公司 | Device for monitoring height of soil core in tubular pile |
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| CN114108604B (en) | 2022-10-21 |
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