CN112049112B - Operation platform for pile pulling, pile pulling device and pile pulling method - Google Patents
Operation platform for pile pulling, pile pulling device and pile pulling method Download PDFInfo
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- CN112049112B CN112049112B CN202010974572.5A CN202010974572A CN112049112B CN 112049112 B CN112049112 B CN 112049112B CN 202010974572 A CN202010974572 A CN 202010974572A CN 112049112 B CN112049112 B CN 112049112B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing
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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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
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Abstract
The application discloses an operating platform for pile pulling, which comprises a supporting platform, a first branch part and a second branch part, wherein the supporting platform is cut into the first branch part and the second branch part by a continuous seam; the continuous seam comprises 6-12 steel sheet pile seams which are sequentially connected, the steel sheet pile seams are respectively called a first steel sheet pile seam and a second steel sheet pile seam, and the first steel sheet pile seam and the second steel sheet pile seam are arranged in a staggered mode; the notch of the first steel sheet pile seam faces a first direction, and the notch of the second steel sheet pile seam faces a second direction; the first direction and the second direction are opposite in direction; an H-shaped steel pile slit is arranged corresponding to each first steel sheet pile slit. The application also discloses pile pulling device, and it includes first pile extractor, second pile extractor and above-mentioned operation platform. The application also provides a pulling-out method of the combined steel sheet pile. By the aid of the static pile extractor, static pile extractors can be directly supported on the operation platform to operate, influence on regional noise pollution and newly-built buildings is reduced, and influence on strength of the newly-built buildings is particularly avoided.
Description
Technical Field
The invention relates to an operation platform, a pile pulling device and a pile pulling method for pile pulling of a combined steel sheet pile.
Background
After the foundation pit supporting construction is finished, various piles used for supporting the foundation pit must be pulled out, so that the piles are prevented from being left underground, the environment underground soil body and water and soil are polluted, materials are recycled, and construction cost is reduced. The combined steel sheet pile formed by the H steel pile and the steel sheet pile has better bending resistance and construction performance, and is widely applied to foundation pit support, the combined steel sheet pile can be recycled in a non-permanent pile area, at present, pile pulling work of the H steel pile and the steel sheet pile in the combined steel sheet pile is generally carried out by large-scale high-frequency vibration equipment, the pile pulling equipment is high in cost, in the pile pulling process, larger vibration and noise pollution can be generated, damage to surrounding buildings can be caused, normal life of surrounding residents can be influenced, particularly for a building which is just constructed, the strength of the building cannot reach the maximum value due to the fact that concrete does not reach the maintenance period, and the stability generated by the pile pulling equipment can have certain influence on the strength of the building.
Disclosure of Invention
In order to solve the above problems, the present invention firstly provides an operation platform for pile pulling, the operation platform is used for pulling out a steel pile in a combined steel sheet pile wall, the combined steel sheet wall comprises a continuous wall formed by mutually engaging a plurality of steel sheet piles and H steel piles positioned on the same side of the continuous wall, the steel sheet piles are U-shaped steel piles or hat-shaped steel sheet piles, the first notches of adjacent steel sheet piles face opposite directions, only the back sides of the steel sheet piles are provided with the H steel piles, and gaps are formed between the H steel piles and the corresponding steel sheet piles; the back side refers to the side facing away from the first notch of the steel sheet pile;
the operating platform comprises a supporting platform, wherein the supporting platform is provided with an upper surface and a lower surface which are opposite, a continuous seam penetrates through the upper surface and the lower surface and is used for cutting the supporting platform into a first subsection and a second subsection, the continuous seam extends in a bending mode along the direction of an M axis and penetrates through two opposite sides of the supporting platform, and the M axis is parallel to the upper surface;
the upper surface and the lower surface of the first subsection are respectively called a first upper surface and a first lower surface, and the upper surface and the lower surface of the second subsection are respectively called a second upper surface and a second lower surface; when the first subsection and the second subsection are laid on the ground, and the first lower surface and the second lower surface are both downward, the first upper surface and the second upper surface are coplanar;
the continuous seam comprises 6-12 steel sheet pile seams which are sequentially connected, each steel sheet pile seam can enable a steel sheet pile to be inserted into the steel sheet pile seam, and each steel sheet pile seam is in a groove shape matched with the steel sheet pile; the steel sheet pile seams are respectively called as a first steel sheet pile seam and a second steel sheet pile seam, one and only one second steel sheet pile seam are arranged between two adjacent first steel sheet pile seams, and one and only one first steel sheet pile seam are arranged between two second steel sheet pile seams; the notch of the first steel sheet pile seam faces a first direction, and the notch of the second steel sheet pile seam faces a second direction; the first direction and the second direction are both parallel to the upper surface of the support table and perpendicular to the M axis, and the first direction and the second direction are opposite in direction;
an H-shaped steel pile slit is arranged corresponding to each first steel plate pile slit and arranged on the second direction side of the corresponding first steel plate pile slit.
When the operation platform is used, the first subsection and the second subsection are required to be placed on two sides of a combined steel sheet pile wall, the H steel pile penetrates through a corresponding H steel pile slit, the steel sheet pile is located in the steel sheet pile slit, the first subsection and the second subsection are fixed on the ground, the deviation of the distance between the first subsection and the second subsection is avoided, and the smooth pile pulling is influenced. And then supporting the pile pulling equipment on the operation platform, pulling out the pile bodies in sequence, and recovering the pile bodies.
Because the operation platform can be used as the pile pulling platform for 6-12 steel sheet piles and corresponding H-shaped steel piles, a plurality of pile pulling machines can operate simultaneously, the pile pulling speed is improved, and the static pile pulling machines can be directly supported on the operation platform to operate by utilizing the operation platform, thereby reducing the influence on the noise pollution serving as the area and on the newly-built building, and particularly avoiding the influence on the strength of the newly-built building. In the prior art, because the construction conditions of a construction area are poor, large-scale vibration pile pulling equipment is generally adopted, and a plurality of pieces of equipment cannot work simultaneously. By utilizing the operation platform, after the corresponding steel piles are pulled out and recovered, the operation platform can be moved to the next operation area to continue to operate until all pile pulling work is completed.
Furthermore, at least one H-shaped steel pile slit is communicated with the corresponding first steel sheet pile slit for convenient processing. After the slit of the H-shaped steel pile is communicated with the corresponding slit of the first steel sheet pile, when the supporting platform is processed, the corresponding part can be directly cut off, and the steel sheet pile with the H-shaped steel pile locking opening arranged on the web plate can be conveniently and smoothly pulled out.
Further, each steel sheet pile seam has a first inner surface capable of fitting with the outer side surface of the inserted steel sheet pile. Because in this application, the orientation of the first notch of the steel sheet pile of the continuous wall that will demolish is opposite, and this design can make operation platform can laminate mutually with steel sheet pile wall, the location of being convenient for pull out a equipment.
Further, each first steel sheet pile seam comprises a first straight groove part and a first arm groove part formed by obliquely extending two ends of the first straight groove part in the M-axis direction, and the first arm groove part obliquely extends towards the first direction; a first support is arranged on the first direction side of each first steel sheet pile seam, two second supports are arranged on the second direction side of each first steel sheet pile seam, and the two second supports are arranged at intervals along the direction of the M axis and symmetrically arranged on two sides of the H steel pile seam;
each first support is provided with a first connecting part A, each second support is provided with a second connecting part, two second supports are respectively provided with a first connecting part, and the first connecting parts on the two second supports form a first connecting part B together;
each second steel plate pile seam comprises a second straight groove part and a second arm groove part formed by obliquely extending two ends of the second straight groove part in the M-axis direction, and the second arm groove part obliquely extends towards the second direction; and a third support is arranged on the first direction side and the second direction side of each second steel sheet pile seam, and a third connecting part is arranged on each third support.
After setting up each support, can be fixed operation platform with pile pulling equipment on through each connecting portion, above pile pulling equipment can stably support on operation platform at the during operation, avoids producing the slope, can guarantee operating personnel's safety simultaneously.
Secondly, the application also provides a pile pulling device which comprises a first pile pulling machine, a second pile pulling machine and the operating platform for pile pulling; the first pile extractor is used for extracting the H-shaped steel pile, and the second pile extractor is used for keeping the steel sheet pile;
the first pile extractor comprises a force bearing frame and a supporting plate, wherein the force bearing frame comprises a rectangular force bearing frame and the supporting plate is installed at the bottom of the force bearing frame, the top of the force bearing frame is open, and a steel pile passageway for an H steel pile to pass through is formed in the supporting plate; two first pile clamping jacks are arranged in an inner cavity of the force bearing frame, are positioned at two opposite sides of a steel pile passageway, are fixedly arranged on two opposite side walls of the stress frame, and have first piston rods A which can relatively extend out along a first axial direction and are clamped at two sides of a web plate of the H-shaped steel pile; the first axis extends in a horizontal direction;
two first lifting jacks are mounted on the lower side of the bearing frame, the two first lifting jacks are arranged at intervals along the first axial direction, and second piston rods A of the two first lifting jacks can stretch out and draw back along the vertical direction to push the bearing frame to reciprocate in the vertical direction; the first pile clamping jack and the first lifting jack are both hydraulic jacks;
two lifting pieces are arranged at the lower side of the bearing frame, the two lifting pieces are arranged at intervals along a second axial direction, and the second axial direction extends along the horizontal direction and is vertical to the first axial direction;
the two lifting pieces are respectively connected to one flange of the H-shaped steel pile, a steel pile channel is formed between the two lifting pieces, and the H-shaped steel pile can sequentially pass through the steel pile channel and the steel pile channel from bottom to top;
each lifting member is provided with a pile pulling hole, the flange of the H-shaped steel pile is provided with a pile body hole for lifting, and a pin can be simultaneously inserted into the pile pulling hole and the pile body hole so that the H-shaped steel pile is connected to the lifting member;
the second pile extractor comprises a bearing platform, the bearing platform comprises a bottom plate and a rectangular frame connected to the upper side of the bottom plate, the upper side of the rectangular frame is open, and a pile clamping channel for steel sheet piles to pass through is arranged on the bottom plate; two second pile clamping jacks are arranged in an inner cavity of the bearing table and are positioned at two opposite sides of the pile clamping channel, the two second pile clamping jacks are fixedly arranged on two opposite side walls of the rectangular frame, and first piston rods B of the two second pile clamping jacks can relatively extend out along the first axial direction; the first axis extends in a horizontal direction;
two second lifting jacks are mounted on the lower side of the bearing platform and are arranged at intervals along the first axial direction, and second piston rods B of the two second lifting jacks can stretch out and draw back along the vertical direction to push the bearing platform to reciprocate in the vertical direction; the second pile clamping jack and the second lifting jack are both hydraulic jacks;
two hoisting hanging plates are further mounted on the lower side of the bearing platform, the two hoisting hanging plates are located between the two second lifting jacks, a pile body channel is formed between the two hoisting hanging plates, the pile body channel and the pile clamping channel are arranged oppositely and are communicated up and down in the vertical direction, and steel sheet piles can sequentially penetrate through the pile body channel and the pile clamping channel from bottom to top; the two hoisting hanging plates are respectively a first hoisting scraper and a second hoisting scraper, a first hoisting hole in a through hole shape is formed in the first hoisting scraper, a second hoisting hole opposite to the first hoisting hole is formed in the second hoisting scraper, and a pin can be simultaneously inserted into the first hoisting hole and the second hoisting hole which are oppositely arranged;
the first pile extractor can be supported on the operating platform and used for extracting the H-shaped steel pile; the second pile extractor can be supported on the operating platform and used for extracting the steel sheet piles.
When the first pile extractor works, the first pile extractor needs to be supported on the support table so as to provide enough upward extraction counterforce. Arranging a first pile extractor above the H-shaped steel pile to be extracted, inserting the H-shaped steel pile into the steel pile channel, arranging a pile body hole at the end part of the H-shaped steel pile exposed out of the ground,
and adjusting the extension length of a second piston rod A of the first lifting jack to enable an inner pile pulling hole and an outer pile pulling hole to be opposite to a pile body hole, penetrating the outer pile pulling hole, the pile body hole and the inner pile pulling hole by pins, hanging the H steel pile on the lifting piece, extending the second piston rod A to upwards drive the H steel pile until the second piston rod A is maximally extended, and removing the pins to enable the H steel pile to be separated from the lifting piece. And (3) retracting the second piston rod A, descending the force-bearing frame until the H steel pile passes through the steel pile passageway and is inserted between the first piston rods A of the two first pile clamping jacks, clamping the H steel pile by using the two first pile clamping jacks, extending the second piston rod A of the first lifting jack again, lifting the H steel pile upwards, and when the extension of the second piston rod A reaches the maximum value, loosening the H steel pile by using the first pile clamping jack, retracting the second piston rod A, clamping the H steel pile by using the first pile clamping jack again, extending the second piston rod A, repeating the steps, completely pulling the H steel pile out of the ground, and recovering.
The first pile extractor adopts the hydraulic jack as the first pile clamping jack, has the advantages of uniform and reliable clamping force and can work continuously. Because the hydraulic jack is used as the first pile clamping jack and the first lifting jack, the hydraulic pile clamping jack has the advantage of low noise during working, has little vibration, and cannot influence surrounding buildings and normal work and life of people.
When the second pile extractor works, the second pile extractor needs to be supported on the support table so as to provide enough upward pulling counter force. The second pile extractor is arranged above a steel plate pile required to be extracted, the steel plate pile is inserted into a pile body channel, a lifting hole is formed in the end portion, exposed out of the ground, of the steel plate pile, the extension length of a second piston rod B of a second lifting jack is adjusted, the first lifting hole and the second lifting hole are opposite to the lifting hole, a pin penetrates through the first lifting hole, the lifting hole and the second lifting hole, the steel plate pile is hung on the lifting hanging plate, then the second piston rod B extends, the steel plate pile is upwards driven until the second piston rod B extends to the maximum extent, and then the pin is removed, so that the steel plate pile is separated from the lifting hanging plate. And (3) retracting the second piston rod B, descending the bearing platform until the steel sheet pile passes through the pile clamping channel and is inserted between the first piston rods B of the two second pile clamping jacks, clamping the two second pile clamping jacks at the two sides of the web plate of the steel sheet pile, extending the second piston rod B of the second lifting jack again, lifting the steel sheet pile upwards, loosening the steel sheet pile by using the second pile clamping jack when the extension of the second piston rod B reaches the maximum value, retracting the second piston rod B, clamping the two sides of the web plate of the steel sheet pile by using the second pile clamping jack again, extending the second piston rod B, repeating the steps, completely pulling the steel sheet pile out of the ground, and recovering.
This application adopts hydraulic jack as second pile clamping jack, has the even reliable advantage of clamping-force, but continuous operation. Because the hydraulic jack is adopted as the second pile clamping jack and the second lifting jack, the hydraulic pile clamping jack has the advantage of low noise during working, has little vibration, and can not influence the surrounding buildings and the normal work and life of people.
Further, in order to enhance the biting force on the steel sheet pile, a first pile clamping head is detachably arranged on the first piston rod A of each first pile clamping jack, and the two first pile clamping heads are arranged oppositely; first meshing plates are detachably arranged on one side, facing to the other first pile clamping head, of each first pile clamping head, and first teeth are arranged on one side, facing to the other first meshing plate, of each first meshing plate;
a first clamping head is detachably mounted on a first piston rod B of each first pile clamping jack, and the two first clamping heads are arranged oppositely; and a second bite plate is detachably arranged on one side of each second clamping head facing to the other second clamping head, and second teeth are arranged on one side of each second bite plate facing to the other second bite plate.
After a long period of use, the bite plate can be replaced if the teeth are worn too hard.
Further, when the first engaging plates are clamped on the H steel pile, the first engaging plates are clamped on two sides of the web plate of the H steel pile in the thickness direction, and the first engaging plates are only clamped on the web plate of the H steel pile;
when the second engagement plate is clamped on the steel sheet pile, the second engagement plate is clamped on two sides of the web plate of the steel sheet pile in the thickness direction, and in the width direction of the steel sheet pile, the second engagement plate does not exceed the web plate of the steel sheet pile outwards.
The design can simplify the structure of the equipment, the H-shaped steel piles are provided with the webs, the snap plates are only clamped on two sides of the webs, the single snap plate can adapt to various H-shaped steel piles, the H-shaped steel piles in various forms are not required to be provided with corresponding snap plates, and the manufacturing cost and the maintenance cost of the equipment are also reduced.
The steel sheet piles are generally provided with the web plates, so that the engagement plates are only clamped on two sides of the web plates, a single engagement plate can adapt to various steel sheet piles, the corresponding engagement plates do not need to be arranged aiming at various types of steel sheet piles, and the manufacturing cost and the maintenance cost of equipment are reduced. In particular, for the U-shaped steel sheet pile and the hat-shaped steel sheet pile which are used in extremely large quantities, the same engagement plates can be used without arranging corresponding engagement plates for the U-shaped steel sheet pile and the hat-shaped steel sheet pile.
Furthermore, on the first pile extractor, each lifting piece comprises a body and a flange groove arranged in the body, the flange groove is T-shaped when being observed along the vertical direction, and the openings of the flange grooves of the two lifting pieces are oppositely arranged;
on the second pile extractor, the lower side of the bottom plate is provided with two connecting bulges extending downwards, the two connecting bulges are positioned at two opposite sides of the pile clamping channel, and each hoisting hanging plate is connected to one connecting bulge.
To first pile extractor, the hoisting member can adopt overall structure or split type structure, when adopting overall structure, can adopt the mode processing of casting or steel sheet bending to form, when adopting split type structure, can form with steel sheet or shaped steel concatenation. After the wing edge groove that the setting is the T type is carrying out the pile pulling in-process, this edge of a wing inslot can be inserted to the edge of a wing of H steel pile, then can connect the H steel pile in the promotion piece with the pin, can make the atress of promotion piece comparatively balanced.
For the second pile extractor, after the special connecting bulge is arranged, the ground hoisting hanging plate can be conveniently installed on the bearing platform.
Further, a second piston rod A of the first lifting jack extends upwards, and the end part of the second piston rod A is fixedly connected to the lower side of the force bearing frame; and a second piston rod B of the second lifting jack extends upwards, and the end part of the second piston rod B is fixedly connected to the lower side of the bearing table.
The design can make the cylinder support on the brace table, has bigger area of contact, provides the temperature nature of equipment.
Thirdly, the application also provides a method for pulling out the combined steel sheet pile, which is carried out by adopting the pile pulling device and comprises the following steps:
(1) and (3) recovering the H steel pile:
firstly, a first pile extractor is supported on an operation platform, first lifting jacks are respectively positioned at two sides of a web plate of an H steel pile, the H steel pile is inserted into a steel pile channel, and a pile body hole is formed in the end part, exposed out of the ground, of the H steel pile;
adjusting the extension length of a second piston rod A of the first lifting jack, enabling an inner pile pulling hole and an outer pile pulling hole to be opposite to a pile body hole, enabling a pin to penetrate the outer pile pulling hole, the pile body hole and the inner pile pulling hole, hanging the H steel pile on a lifting piece, enabling the second piston rod A to extend, driving the H steel pile upwards until the second piston rod A extends to the maximum extent, and then removing the pin to enable the H steel pile to be separated from the lifting piece;
retracting the second piston rod A, descending the force-bearing frame until the H steel pile passes through the steel pile passageway and is inserted between the first piston rods A of the two first pile clamping jacks, then clamping the H steel pile by the two first pile clamping jacks, extending the second piston rod A of the first lifting jack again, lifting the H steel pile upwards, and when the extension of the second piston rod A reaches the maximum value, loosening the H steel pile by the first pile clamping jack, retracting the second piston rod A, clamping the H steel pile by the first pile clamping jack again, extending the second piston rod A, repeating the steps, completely pulling the H steel pile out of the ground, and recovering the H steel pile;
(2) and (3) recovering steel sheet piles:
arranging a second pile extractor above a steel sheet pile to be extracted, inserting the steel sheet pile into a pile body channel, arranging a lifting hole at the end part of the steel sheet pile exposed out of the ground, adjusting the extension length of a second piston rod B of a second lifting jack, enabling the first lifting hole and the second lifting hole to be opposite to the lifting hole, penetrating a pin through the first lifting hole, the lifting hole and the second lifting hole, hanging the steel sheet pile on the lifting hanging plate, extending the second piston rod B, upwards driving the steel sheet pile until the second piston rod B is maximally extended, and then removing the pin to enable the steel sheet pile to be separated from the lifting hanging plate;
retracting the second piston rod B, descending the bearing platform until the steel sheet pile passes through the pile clamping channel and is inserted between the first piston rods B of the two second pile clamping jacks, then clamping the two second pile clamping jacks at the two sides of the web plate of the steel sheet pile, extending the second piston rod B of the second lifting jack again, lifting the steel sheet pile upwards, when the extension of the second piston rod B reaches the maximum value, enabling the second pile clamping jack to loosen the steel sheet pile, retracting the second piston rod B, clamping the two sides of the web plate of the steel sheet pile again by using the second pile clamping jack, extending the second piston rod B, repeating the steps, completely pulling the steel sheet pile out of the ground, and recovering the steel sheet pile;
when the steel sheet pile with the H-shaped steel pile arranged on the back side is recycled, the H-shaped steel pile on the back side of the steel sheet pile needs to be recycled firstly.
By adopting the method, the H steel pile and the steel sheet pile of the combined steel sheet wall can be smoothly completed, and because the noise and the vibration are less in the pile pulling process, the noise and the vibration are not influenced on the surrounding buildings and the normal work and life of people.
Drawings
Fig. 1 is a schematic structural diagram of an operation platform.
Fig. 2 is a partially enlarged view of a portion E in fig. 1.
Fig. 3 is a partial schematic view of the operation platform inserted into the composite steel sheet piling wall to be recovered.
Fig. 4 is a partial view of a composite steel sheet pile wall.
Fig. 5 is an operating state diagram of the first pile extractor.
Fig. 6 is an operation state diagram of the second pile extractor.
Fig. 7 is a perspective view of an embodiment of a first pile extractor.
Fig. 8 is a front view of the drawing of fig. 7.
Fig. 9 is a partial cross-sectional view of the drawing shown in fig. 8.
Fig. 10 is a left side view of fig. 8.
Fig. 11 is a top view of fig. 8.
Fig. 12 is a sectional view taken along a-a in fig. 8.
Fig. 13 is a perspective view of an embodiment of a second pile extractor.
Fig. 14 is a front view of the drawing of fig. 13.
Fig. 15 is a left side view of fig. 14.
Fig. 16 is a top view of fig. 14.
Fig. 17 is a sectional view taken along line B-B in fig. 16.
Detailed Description
First, the structure of the composite steel sheet pile wall to be pulled out in the present application will be described below.
Please refer to fig. 4, the combined steel sheet pile wall is composed of a steel sheet pile and H-shaped steel piles, the combined steel sheet wall includes a continuous wall formed by interlocking a plurality of steel sheet piles 900 and the H-shaped steel piles 800 located on the same side of the continuous wall, the steel sheet piles 900 are U-shaped steel piles, the directions of the first notches 905 of the adjacent steel sheet piles 900 are opposite, the H-shaped steel piles 800 are only arranged on the back sides of the steel sheet piles 900, two channel steels 320 with opposite notches are welded on the back sides of the second web 901 of the steel sheet piles, one flange 802 of the H-shaped steel pile 800 is inserted into the notches of the two channel steels, so that the steel sheet piles and the H-shaped steel piles can be connected together through the channel steels to jointly resist external pressure, and a gap is formed between the steel sheet pile and the H-shaped steel pile connected thereto due to the isolation effect of the channel walls of the channel steels. The back side of the steel sheet pile refers to the side opposite to the first notch 905 of the steel sheet pile, i.e. the side facing away from the first notch of the steel sheet pile. A lifting hole 907 is formed in the second web plate of the steel sheet pile exposed out of the ground, and a pile body hole 803 is formed in the flange of the H-shaped steel pile exposed out of the ground. It is understood that in another embodiment, the steel sheet pile may also be a hat-type steel sheet pile.
Example 1
The following first describes an operation platform for pile extraction.
Referring to fig. 1-3, in fig. 1, the arrow labeled M represents the M axis, the arrow Y1 pointing in a first direction, and the arrow Y2 pointing in a second direction. The first direction and the second direction are opposite in direction and are both perpendicular to the M-axis.
The operation platform is used for pulling out the steel piles in the combined steel sheet pile wall. The operation platform includes a supporting platform 110, the supporting platform 110 has an upper surface and a lower surface opposite to each other, a continuous seam 120 penetrates through the upper surface and the lower surface, the supporting platform 110 is cut into a first part 111 and a second part 112, the continuous seam 120 extends along the M axis direction in a bending manner and penetrates through two opposite sides of the supporting platform 110, and the M axis is parallel to the upper surface.
The upper surface and the lower surface of the first subsection are respectively called a first upper surface and a first lower surface, and the upper surface and the lower surface of the second subsection are respectively called a second upper surface and a second lower surface; when the first and second sections are laid on the ground with the first and second lower surfaces facing downward, the first and second upper surfaces are coplanar.
The continuous seam comprises 9 steel sheet pile seams which are connected in sequence, each steel sheet pile seam can enable a steel sheet pile to be inserted into the steel sheet pile seam, and each steel sheet pile seam is in a groove shape matched with the steel sheet pile.
The steel sheet pile seams are respectively referred to as a first steel sheet pile seam 121 and a second steel sheet pile seam 122, one and only one second steel sheet pile seam 122 is arranged between two adjacent first steel sheet piles 121, and one and only one first steel sheet pile seam 121 is arranged between two second steel sheet pile seams 122. The notches of the first steel sheet pile slit face in the first direction Y1, and the notches of the second steel sheet pile slit face in the second direction Y2. The first direction and the second direction are both parallel to the upper surface of the support table.
An H-shaped steel pile slit 125 is provided corresponding to each first steel sheet pile 121, and the H-shaped steel pile slit 125 is provided on the second direction side of the corresponding first steel sheet pile slit 121.
And each H steel pile slit is communicated with the corresponding first steel sheet pile slit.
Referring to fig. 2, the first steel sheet pile slit 121 has a first inner surface a1216 capable of being attached to the outer side surface of the inserted steel sheet pile, and the second steel sheet pile slit 122 has a first inner surface B1226 capable of being attached to the outer side surface of the inserted steel sheet pile. Namely, each steel sheet pile seam has a first inner surface which can be jointed with the outer side surface of the inserted steel sheet pile.
Each first steel sheet pile slit 121 includes a first straight groove portion 1211 and a first arm groove portion 1212 formed by obliquely extending both ends of the first straight groove portion in the M-axis direction, the first arm groove portion obliquely extending toward the first direction. A first support 132 is arranged on the first direction side of each first steel sheet pile slit 121, two second supports 131 are arranged on the second direction side of each first steel sheet pile slit, and the two second supports are arranged at intervals along the M axis direction and symmetrically arranged on two sides of the H steel pile slit 125;
each first support 132 is screwed on the second upper surface of the second section 112 via a bolt a1321, and a screw hole a1322 is opened on the first support 132, the screw hole a1322 being formed as a first connection portion a.
Each second holder 131 is screwed on the first upper surface of the first section 111 via a bolt B1311, and a screw hole B1312 is bored in each second holder 131, the screw hole B1312 being formed as a second connecting portion. The second connecting part is used for installing a first pile extractor.
And a screw hole C1313 is opened at each second bracket 131, the screw hole C1313 is formed as a first connection section, and the first connection sections of the two second brackets are formed as one first connection portion B in common. The first connecting portion a and the first connecting portion B are used together for mounting a second pile extractor described below.
Each second steel sheet pile slit 122 includes a second straight groove portion 1221 and a second arm groove portion 1222 formed by obliquely extending both ends of the second straight groove portion in the M-axis direction; the second arm groove portion extends obliquely toward the second direction.
A third support 141 is provided on each of the first direction side and the second direction side of second steel sheet pile slit 122. Each third support is screwed on the second upper surface of the second subsection 112 via a bolt D1411, and a threaded hole D1412 is opened on each third support 141, and the threaded hole D1412 is formed as a third connecting portion. The third connecting part is used for installing a second pile extractor.
Example 2
A pile pulling device, which comprises the operation platform in embodiment 1, a first pile pulling machine and a second pile pulling machine.
The first pile extractor will be explained below.
Referring to fig. 7-12, in the present application, the axial direction refers to an extending direction of an axial line, for example, the first axial direction refers to an extending direction of a first axial line, the second axial direction refers to an extending direction of a second axial line, and so on.
The first pile extractor is used for extracting H-shaped steel piles and comprises a force bearing frame 60, wherein the force bearing frame 60 comprises a rectangular force bearing frame 61 and a support plate 62 installed at the bottom of the force bearing frame 61, the top of the force bearing frame 60 is open, and a steel pile passageway 65 for the H-shaped steel pile 800 to pass through is formed in the support plate 62; two first pile clamping jacks 70 are arranged in an inner cavity 63 of the force bearing frame 60, the two first pile clamping jacks 70 are positioned at two opposite sides of the steel pile passageway 65, first cylinder barrels A71 of the two first pile clamping jacks 70 are fixedly installed on two opposite side walls of the force bearing frame 61, and first piston rods A72 of the two first pile clamping jacks 70 can relatively extend out along the direction of the first axis Z and are clamped at two sides of a first web 801 of the H steel pile 800; the first axis Z extends in the horizontal direction.
Two first lifting jacks 80 are mounted on the lower side of the bearing frame 60, the two first lifting jacks 80 are arranged at intervals along the Z direction of a first axis, and second piston rods A82 of the two first lifting jacks 80 can stretch and retract along the vertical direction to push the bearing frame 60 to reciprocate in the vertical direction; the first pile clamping jack 70 and the first lifting jack 80 are both hydraulic jacks.
Two lifters 90 are mounted on the underside of the carrier frame 60, spaced apart along a second axis S extending horizontally and perpendicular to the first axis Z.
The two lifting pieces 90 are used for being connected to one flange 802 of the H-shaped steel pile 800 respectively, a steel pile channel is formed between the two lifting pieces, and the H-shaped steel pile 800 can sequentially pass through the steel pile channel and the steel pile passageway from bottom to top.
In this embodiment, each lifting member 90 is a split structure, and includes a body 95 and a flange slot 96 disposed in the body 95. In this embodiment, this body 95 adopts the steel sheet welding to form, specifically include an outer panel 91 and two interior plates 92, outer panel 91 and interior plate 92 all extend along vertical direction, each interior plate 92 all welds on outer panel 91 through connecting plate 94, two interior plates 92 extend along same vertical face, and be located this interior plate towards one side of another lifting member, two interior plate intervals set up, and have the distance between two interior plates and the outer panel, outer panel 91, the space that interior plate 92 and connecting plate 94 enclose forms the flange groove 96 that is the T type, the distance between two interior plates 92 forms the opening 97 of this flange groove 96, the opening of the flange groove of two lifting members sets up relatively.
Each inner side plate 92 is provided with an inner pile pulling hole 912, each outer side plate 91 is provided with an outer pile pulling hole 911 corresponding to each inner pile pulling hole 912, the flange of the H-shaped steel pile is provided with a pile body hole 803 for hoisting, and the pin 901 can be inserted into the inner pile pulling hole, the pile body hole and the outer pile pulling hole at the same time, so that the H-shaped steel pile is connected to the lifting piece.
That is, each lifting member is provided with a pile pulling hole, the flange of the H-shaped steel pile is provided with a pile body hole for lifting, and a pin can be simultaneously inserted into the pile pulling hole and the pile body hole, so that the H-shaped steel pile is connected to the lifting member.
It will be appreciated that in other embodiments, the lifting member may be of unitary construction, cast as one piece or bent from sheet steel.
A pile clamping head 73 is detachably mounted on the first piston rod a72 of each first pile clamping jack 70, and the two pile clamping heads are arranged oppositely. A bite plate 74 is detachably mounted on one side of each pile clamping head 73 facing the other pile clamping head, and teeth are arranged on one side of each bite plate 74 facing the other bite plate.
In this embodiment, when the engagement plate 74 is clamped on the H-shaped steel pile 800, the engagement plate 74 is clamped on both sides in the thickness direction of the first web 801 of the H-shaped steel pile 800, and the engagement plate 74 is clamped only on the first web 801 of the H-shaped steel pile.
Corresponding to each pile clamping head 73, a guide rail 66 for supporting the pile clamping head 73 is provided on the upper side of the support plate 62. The pile clamping head is supported on the guide rail, so that the first piston rod A is prevented from bending under the action of gravity.
In this embodiment, the second piston rod a82 of the first lifting jack 80 extends upward, and the end of the second piston rod a82 is fixedly connected to the lower side of the force-bearing frame, specifically, bolted to the lower surface of the support plate 62.
An installation part is arranged on the second cylinder A81 of the first lifting jack 80, and the installation part is located at one end, extending away from the second piston rod A, of the second cylinder A, specifically in the embodiment, the installation part is a connecting ring 83 sleeved on the second cylinder A81, and a bolt hole 831 is formed in the connecting ring 83.
In operation, the present embodiment needs to be supported on the operation platform to provide sufficient supporting force. The first pile extractor is arranged above an H steel pile 800 to be extracted, the H steel pile 800 is inserted into a steel pile channel, a pile body hole 803 is formed in the end portion, exposed out of the ground, of the H steel pile, the extension length of a second piston rod A of a first lifting jack is adjusted, the inner pile extracting hole and the outer pile extracting hole are opposite to the pile body hole, pins penetrate through the outer pile extracting hole, the pile body hole and the inner pile extracting hole, the H steel pile is hung on a lifting piece, then the second piston rod A extends to drive the H steel pile upwards until the second piston rod A extends to the maximum extent, and then the pins are removed to enable the H steel pile to be separated from the lifting piece. And (3) retracting the second piston rod A, descending the force-bearing frame until the H steel pile passes through the steel pile passageway and is inserted between the first piston rods A of the two first pile clamping jacks, clamping the H steel pile by using the two first pile clamping jacks, extending the second piston rod A of the first lifting jack again, lifting the H steel pile upwards, and when the extension of the second piston rod A reaches the maximum value, loosening the H steel pile by using the first pile clamping jack, retracting the second piston rod A, clamping the H steel pile by using the first pile clamping jack again, extending the second piston rod A, repeating the steps, completely pulling the H steel pile out of the ground, and recovering.
The second pile extractor will be described below.
Referring to fig. 13-17, a second pile extractor includes a bearing platform 10, the bearing platform 10 includes a bottom plate 12 and a rectangular frame 11 connected to the upper side of the bottom plate 12, the upper side of the rectangular frame 11 is open, and a pile clamping channel 15 for passing steel sheet piles is disposed on the bottom plate 12. Two second pile clamping jacks 20 are respectively arranged on two opposite sides of the pile clamping channel, the two second pile clamping jacks 20 are arranged in the inner cavity 13 of the bearing platform, the first cylinder barrels B21 of the two second pile clamping jacks 20 are fixedly arranged on two opposite side walls of the rectangular frame 11, and the first piston rods B22 of the two second pile clamping jacks 20 can relatively extend out along the direction of the third axis X. The third axis X extends in the horizontal direction.
Two second lifting jacks 30 are mounted on the lower side of the bearing platform, are arranged at intervals along the third axis X, and second piston rods B32 of the two second lifting jacks can stretch out and draw back along the vertical direction to push the bearing platform 10 to reciprocate in the vertical direction; the second pile clamping jack and the second lifting jack are both hydraulic jacks.
Two connecting bulges 14 extending downwards are arranged on the lower side of the bottom plate, the two connecting bulges 14 are positioned on two opposite sides of the pile clamping channel 15, and a hanging plate is arranged on each connecting bulge by adopting a bolt.
Two hoisting hanging plates are positioned between the two second lifting jacks 30, a pile body channel 45 is formed between the two hoisting hanging plates, and the pile body channel and the pile clamping channel are oppositely arranged and are communicated up and down in the vertical direction. The steel sheet pile can pass through the pile body channel 45 and the pile clamping channel 15 from bottom to top in sequence.
These two link plates of lifting by crane are first lift by crane scraper blade 41 and second respectively and lift by crane scraper blade 42, lift by crane link plate 41 in the first place and be provided with two sets of first hanging holes along vertical direction, every first hanging hole of group all includes two first hanging holes that set up along the horizontal direction, two sets of hanging holes are the first hanging hole of A group and the first hanging hole of B group respectively, the first hanging hole of A group includes two first hanging holes A43 that set up along the horizontal direction interval, the first hanging hole of B group includes two first hanging holes B44 that set up along the horizontal direction interval. A second hanging hole a is formed in the second hanging plate 42 corresponding to each first hanging hole a43, and each second hanging hole a is disposed opposite to the corresponding first hanging hole a. A second hanging hole B is provided corresponding to each first hanging hole B44, and each second hanging hole B is provided opposite to the corresponding first hanging hole B. Namely, a first hoisting hole with a through hole shape is arranged on the first hoisting scraper, and a second hoisting hole opposite to the first hoisting hole is arranged on the second hoisting scraper. A pin can be inserted into the first hanging hole and the second hanging hole which are oppositely arranged at the same time.
And a clamping head 23 is arranged on the first piston rod B of each second pile clamping jack by adopting a bolt, and the two clamping heads are arranged oppositely. A bite plate 24 is mounted on one side of each holding head 23 facing the other holding head by bolts, and teeth are provided on one side of each bite plate 24 facing the other bite plate.
In this embodiment, when the engaging plate 24 is clamped on the steel sheet pile 900, the engaging plate is clamped on both sides of the second web of the steel sheet pile in the thickness direction, and the engaging plate does not go beyond the second web of the steel sheet pile in the width direction of the steel sheet pile.
Corresponding to each gripping head 23, a guide rail 16 for supporting the gripping head 23 is provided on the upper side of the base plate. The clamping head is supported on the guide rail, so that the first piston rod B is prevented from bending under the action of gravity.
In the present embodiment, the second lifting jack 30 is disposed in a vertical direction, the second piston rod B32 of the second lifting jack 30 extends upward, and the end of the second piston rod B32 is fixedly connected to the lower side of the platform.
A mounting portion is disposed on the second cylinder B31 of the second lifting jack 30, and the mounting portion is located at an end of the second cylinder B that extends away from the second piston rod B32, specifically, in this embodiment, the mounting portion is a connecting ring 33 that is sleeved on the second cylinder B31, and a bolt hole 331 is formed in the connecting ring 33.
When the embodiment works, the operation platform needs to be supported to provide enough pull-up counter force. The second pile extractor is arranged above the steel sheet pile 900 to be extracted, the steel sheet pile 900 is inserted into the pile body channel 45, the extension length of a second piston rod B32 of the second lifting jack is adjusted, the first hanging hole and the second hanging hole are opposite to the lifting hole, pins penetrate through the first hanging hole, the lifting hole and the second hanging hole, the steel sheet pile is hung on the lifting hanging plate, then the second piston rod B is extended to upwards drive the steel sheet pile until the second piston rod B is extended to the maximum extent, and then the pins are removed to separate the steel sheet pile from the lifting hanging plate. And retracting the second piston rod B, descending the bearing platform until the steel sheet pile passes through the pile clamping channel and is inserted between the first piston rods B of the two second pile clamping jacks, clamping the two sides of the second web plate of the steel sheet pile by the two second pile clamping jacks, extending the second piston rods B of the second lifting jacks again, lifting the steel sheet pile upwards, loosening the steel sheet pile by the second pile clamping jacks when the extension of the second piston rods B reaches the maximum value, retracting the second piston rods B, clamping the two sides of the second web plate of the steel sheet pile by the second pile clamping jacks again, extending the second piston rods B, repeating the steps, completely pulling the steel sheet pile out of the ground, and recovering.
Example 3
A method for pulling out a combined steel sheet pile is carried out by adopting a pile pulling device in an embodiment and comprises the following steps:
(1) and (3) recovering the H steel pile:
referring to fig. 1-17, a first pile extractor is first supported on an operating platform, such that first lifting jacks are respectively located at two sides of a web of an H-shaped steel pile, the H-shaped steel pile is inserted into a steel pile channel, and a pile body hole is formed at an end portion of the H-shaped steel pile exposed out of the ground.
And adjusting the extension length of a second piston rod A of the first lifting jack to enable an inner pile pulling hole and an outer pile pulling hole to be opposite to a pile body hole, penetrating the outer pile pulling hole, the pile body hole and the inner pile pulling hole by pins, hanging the H steel pile on the lifting piece, extending the second piston rod A to upwards drive the H steel pile until the second piston rod A is maximally extended, and removing the pins to enable the H steel pile to be separated from the lifting piece.
And (3) retracting the second piston rod A, descending the force-bearing frame until the H steel pile passes through the steel pile passageway and is inserted between the first piston rods A of the two first pile clamping jacks, clamping the H steel pile by using the two first pile clamping jacks, extending the second piston rod A of the first lifting jack again, lifting the H steel pile upwards, and when the extension of the second piston rod A reaches the maximum value, loosening the H steel pile by using the first pile clamping jack, retracting the second piston rod A, clamping the H steel pile by using the first pile clamping jack again, extending the second piston rod A, repeating the steps, completely pulling the H steel pile out of the ground, and recovering.
(2) And (3) recovering steel sheet piles:
referring to fig. 5, a second pile extractor is disposed above a steel sheet pile to be extracted, the steel sheet pile is inserted into a pile body channel, a lifting hole is formed in an end portion of the steel sheet pile exposed out of the ground, the extension length of a second piston rod B of a second lifting jack is adjusted, the first lifting hole and the second lifting hole are opposite to the lifting hole, a pin penetrates through the first lifting hole, the lifting hole and the second lifting hole, the steel sheet pile is hung on the lifting hanging plate, then the second piston rod B is extended, the steel sheet pile is driven upwards until the second piston rod B is extended to the maximum extent, and then the pin is removed, so that the steel sheet pile is separated from the lifting hanging plate.
And (3) retracting the second piston rod B, descending the bearing platform until the steel sheet pile passes through the pile clamping channel and is inserted between the first piston rods B of the two second pile clamping jacks, clamping the two second pile clamping jacks at the two sides of the web plate of the steel sheet pile, extending the second piston rod B of the second lifting jack again, lifting the steel sheet pile upwards, loosening the steel sheet pile by using the second pile clamping jack when the extension of the second piston rod B reaches the maximum value, retracting the second piston rod B, clamping the two sides of the web plate of the steel sheet pile by using the second pile clamping jack again, extending the second piston rod B, repeating the steps, completely pulling the steel sheet pile out of the ground, and recovering.
When the steel sheet pile with the H-shaped steel pile arranged on the back side is recycled, the H-shaped steel pile on the back side of the steel sheet pile needs to be recycled firstly.
Claims (9)
1. A pile pulling device is characterized by comprising a first pile pulling machine, a second pile pulling machine and an operation platform for pile pulling; the first pile extractor is used for extracting an H-shaped steel pile, and the second pile extractor is used for extracting a steel plate pile;
the operation platform is used for pulling out steel piles in a combined steel sheet pile wall, the combined steel sheet pile wall comprises a continuous wall formed by mutually meshing a plurality of steel sheet piles and H-shaped steel piles positioned on the same side of the continuous wall, the steel sheet piles are U-shaped steel pull piles or hat-shaped steel sheet piles, the directions of first notches of the adjacent steel sheet piles are opposite, the H-shaped steel piles are arranged on the back sides of the steel sheet piles, and gaps are reserved between the H-shaped steel piles and the corresponding steel sheet piles;
the operating platform comprises a supporting platform, wherein the supporting platform is provided with an upper surface and a lower surface which are opposite, a continuous seam penetrates through the upper surface and the lower surface and is used for cutting the supporting platform into a first subsection and a second subsection, the continuous seam extends in a bending mode along the direction of an M axis and penetrates through two opposite sides of the supporting platform, and the M axis is parallel to the upper surface;
the upper surface and the lower surface of the first subsection are respectively called a first upper surface and a first lower surface, and the upper surface and the lower surface of the second subsection are respectively called a second upper surface and a second lower surface; when the first subsection and the second subsection are laid on the ground, and the first lower surface and the second lower surface are both downward, the first upper surface and the second upper surface are coplanar;
the continuous seam comprises 6-12 steel sheet pile seams which are sequentially connected, each steel sheet pile seam can enable a steel sheet pile to be inserted into the steel sheet pile seam, and each steel sheet pile seam is in a groove shape matched with the steel sheet pile; the steel sheet pile seams are respectively called as a first steel sheet pile seam and a second steel sheet pile seam, one and only one second steel sheet pile seam are arranged between two adjacent first steel sheet pile seams, and one and only one first steel sheet pile seam are arranged between two second steel sheet pile seams; the notch of the first steel sheet pile seam faces a first direction, and the notch of the second steel sheet pile seam faces a second direction; the first direction and the second direction are both parallel to the upper surface of the support table and perpendicular to the M axis, and the first direction and the second direction are opposite in direction;
an H steel pile slit is arranged corresponding to each first steel sheet pile seam, and the H steel pile slit is arranged on the second direction side of the corresponding first steel sheet pile seam;
the first pile extractor comprises a force bearing frame and a supporting plate, wherein the force bearing frame comprises a rectangular force bearing frame and the supporting plate is installed at the bottom of the force bearing frame, the top of the force bearing frame is open, and a steel pile passageway for an H steel pile to pass through is formed in the supporting plate; two first pile clamping jacks are arranged in an inner cavity of the force bearing frame, are positioned at two opposite sides of a steel pile passageway, are fixedly arranged on two opposite side walls of the stress frame, and have first piston rods A which can relatively extend out along a first axial direction and are clamped at two sides of a web plate of the H-shaped steel pile; the first axis extends in a horizontal direction;
two first lifting jacks are mounted on the lower side of the bearing frame, the two first lifting jacks are arranged at intervals along the first axial direction, and second piston rods A of the two first lifting jacks can stretch out and draw back along the vertical direction to push the bearing frame to reciprocate in the vertical direction; the first pile clamping jack and the first lifting jack are both hydraulic jacks;
two lifting pieces are arranged at the lower side of the bearing frame, the two lifting pieces are arranged at intervals along a second axial direction, and the second axial direction extends along the horizontal direction and is vertical to the first axial direction;
the two lifting pieces are respectively connected to one flange of the H-shaped steel pile, a steel pile channel is formed between the two lifting pieces, and the H-shaped steel pile can sequentially pass through the steel pile channel and the steel pile channel from bottom to top;
each lifting member is provided with a pile pulling hole, the flange of the H-shaped steel pile is provided with a pile body hole for lifting, and a pin can be simultaneously inserted into the pile pulling hole and the pile body hole so that the H-shaped steel pile is connected to the lifting member;
the second pile extractor comprises a bearing platform, the bearing platform comprises a bottom plate and a rectangular frame connected to the upper side of the bottom plate, the upper side of the rectangular frame is open, and a pile clamping channel for steel sheet piles to pass through is arranged on the bottom plate; two second pile clamping jacks are arranged in an inner cavity of the bearing table and are positioned at two opposite sides of the pile clamping channel, the two second pile clamping jacks are fixedly arranged on two opposite side walls of the rectangular frame, and first piston rods B of the two second pile clamping jacks can relatively extend out along the first axial direction; the first axis extends in a horizontal direction;
two second lifting jacks are mounted on the lower side of the bearing platform and are arranged at intervals along the first axial direction, and second piston rods B of the two second lifting jacks can stretch out and draw back along the vertical direction to push the bearing platform to reciprocate in the vertical direction; the second pile clamping jack and the second lifting jack are both hydraulic jacks;
two hoisting hanging plates are further mounted on the lower side of the bearing platform, the two hoisting hanging plates are located between the two second lifting jacks, a pile body channel is formed between the two hoisting hanging plates, the pile body channel and the pile clamping channel are arranged oppositely and are communicated up and down in the vertical direction, and steel sheet piles can sequentially penetrate through the pile body channel and the pile clamping channel from bottom to top; the two hoisting hanging plates are respectively a first hoisting scraper and a second hoisting scraper, a first hoisting hole in a through hole shape is formed in the first hoisting scraper, a second hoisting hole opposite to the first hoisting hole is formed in the second hoisting scraper, and a pin can be simultaneously inserted into the first hoisting hole and the second hoisting hole which are oppositely arranged;
the first pile extractor can be supported on the operating platform and used for extracting the H-shaped steel pile; the second pile extractor can be supported on the operating platform and used for extracting the steel sheet piles.
2. Pile pulling apparatus according to claim 1,
a first pile clamping head is detachably arranged on a first piston rod A of each first pile clamping jack, and the two first pile clamping heads are arranged oppositely; first meshing plates are detachably arranged on one side, facing to the other first pile clamping head, of each first pile clamping head, and first teeth are arranged on one side, facing to the other first meshing plate, of each first meshing plate;
a first clamping head is detachably mounted on a first piston rod B of each first pile clamping jack, and the two first clamping heads are arranged oppositely; and a second bite plate is detachably arranged on one side of each second clamping head facing to the other second clamping head, and second teeth are arranged on one side of each second bite plate facing to the other second bite plate.
3. Pile pulling apparatus according to claim 2,
when the first meshing plate is clamped on the H-shaped steel pile, the first meshing plate is clamped on two sides of a web plate of the H-shaped steel pile in the thickness direction, and the first meshing plate is only clamped on the web plate of the H-shaped steel pile;
when the second engagement plate is clamped on the steel sheet pile, the second engagement plate is clamped on two sides of the web plate of the steel sheet pile in the thickness direction, and in the width direction of the steel sheet pile, the second engagement plate does not exceed the web plate of the steel sheet pile outwards.
4. Pile pulling apparatus according to claim 1,
on the first pile extractor, each lifting piece comprises a body and a flange groove arranged in the body, the flange groove is T-shaped when being observed along the vertical direction, and openings of the flange grooves of the two lifting pieces are oppositely arranged;
on the second pile extractor, the lower side of the bottom plate is provided with two connecting bulges extending downwards, the two connecting bulges are positioned at two opposite sides of the pile clamping channel, and each hoisting hanging plate is connected to one connecting bulge.
5. The pile pulling device according to claim 1, wherein the second piston rod A of the first lifting jack extends upwards, and the end part of the second piston rod A is fixedly connected to the lower side of the bearing frame;
and a second piston rod B of the second lifting jack extends upwards, and the end part of the second piston rod B is fixedly connected to the lower side of the bearing table.
6. The pile pulling device according to claim 1, wherein at least one H-steel pile slit is communicated with the corresponding first steel sheet pile slit.
7. A pile pulling apparatus according to claim 1, wherein each steel sheet pile slit has a first inner surface capable of engaging with an outer side surface of the inserted steel sheet pile.
8. Pile pulling apparatus according to claim 1,
each first steel plate pile seam comprises a first straight groove part and a first arm groove part formed by obliquely extending two ends of the first straight groove part in the M-axis direction, and the first arm groove part obliquely extends towards the first direction; a first support is arranged on the first direction side of each first steel sheet pile seam, two second supports are arranged on the second direction side of each first steel sheet pile seam, and the two second supports are arranged at intervals along the direction of the M axis and symmetrically arranged on two sides of the H steel pile seam;
each first support is provided with a first connecting part A, each second support is provided with a second connecting part, two second supports are respectively provided with a first connecting part, and the first connecting parts on the two second supports form a first connecting part B together;
each second steel plate pile seam comprises a second straight groove part and a second arm groove part formed by obliquely extending two ends of the second straight groove part in the M-axis direction, and the second arm groove part obliquely extends towards the second direction; and a third support is arranged on the first direction side and the second direction side of each second steel sheet pile seam, and a third connecting part is arranged on each third support.
9. A method for pulling out a combined steel sheet pile, which is performed by using the pile pulling device according to any one of claims 1 to 8, and comprises the following steps:
(1) and (3) recovering the H steel pile:
firstly, a first pile extractor is supported on an operation platform, first lifting jacks are respectively positioned at two sides of a web plate of an H steel pile, the H steel pile is inserted into a steel pile channel, and a pile body hole is formed in the end part, exposed out of the ground, of the H steel pile;
adjusting the extension length of a second piston rod A of the first lifting jack, enabling an inner pile pulling hole and an outer pile pulling hole to be opposite to a pile body hole, enabling a pin to penetrate the outer pile pulling hole, the pile body hole and the inner pile pulling hole, hanging the H steel pile on a lifting piece, enabling the second piston rod A to extend, driving the H steel pile upwards until the second piston rod A extends to the maximum extent, and then removing the pin to enable the H steel pile to be separated from the lifting piece;
retracting the second piston rod A, descending the force-bearing frame until the H steel pile passes through the steel pile passageway and is inserted between the first piston rods A of the two first pile clamping jacks, then clamping the H steel pile by the two first pile clamping jacks, extending the second piston rod A of the first lifting jack again, lifting the H steel pile upwards, and when the extension of the second piston rod A reaches the maximum value, loosening the H steel pile by the first pile clamping jack, retracting the second piston rod A, clamping the H steel pile by the first pile clamping jack again, extending the second piston rod A, repeating the steps, completely pulling the H steel pile out of the ground, and recovering the H steel pile;
(2) and (3) recovering steel sheet piles:
arranging a second pile extractor above a steel sheet pile to be extracted, inserting the steel sheet pile into a pile body channel, arranging a lifting hole at the end part of the steel sheet pile exposed out of the ground, adjusting the extension length of a second piston rod B of a second lifting jack, enabling the first lifting hole and the second lifting hole to be opposite to the lifting hole, penetrating a pin through the first lifting hole, the lifting hole and the second lifting hole, hanging the steel sheet pile on the lifting hanging plate, extending the second piston rod B, upwards driving the steel sheet pile until the second piston rod B is maximally extended, and then removing the pin to enable the steel sheet pile to be separated from the lifting hanging plate;
retracting the second piston rod B, descending the bearing platform until the steel sheet pile passes through the pile clamping channel and is inserted between the first piston rods B of the two second pile clamping jacks, then clamping the two second pile clamping jacks at the two sides of the web plate of the steel sheet pile, extending the second piston rod B of the second lifting jack again, lifting the steel sheet pile upwards, when the extension of the second piston rod B reaches the maximum value, enabling the second pile clamping jack to loosen the steel sheet pile, retracting the second piston rod B, clamping the two sides of the web plate of the steel sheet pile again by using the second pile clamping jack, extending the second piston rod B, repeating the steps, completely pulling the steel sheet pile out of the ground, and recovering the steel sheet pile;
when the steel sheet pile with the H-shaped steel pile arranged on the back side is recycled, the H-shaped steel pile on the back side of the steel sheet pile needs to be recycled firstly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010974572.5A CN112049112B (en) | 2020-09-16 | 2020-09-16 | Operation platform for pile pulling, pile pulling device and pile pulling method |
| PCT/CN2020/120202 WO2022056968A1 (en) | 2020-09-16 | 2020-10-10 | Operation platform for pulling piles, pile pulling device and pile pulling method |
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| CN202010974572.5A CN112049112B (en) | 2020-09-16 | 2020-09-16 | Operation platform for pile pulling, pile pulling device and pile pulling method |
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| CN116770865B (en) * | 2023-08-21 | 2023-10-31 | 上海建工集团股份有限公司 | Assembled steel sheet pile enclosure structure, construction equipment and construction method thereof |
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| CN112049112A (en) | 2020-12-08 |
| WO2022056968A1 (en) | 2022-03-24 |
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