CN109113060B - Pile turning method for heavy pile casing - Google Patents
Pile turning method for heavy pile casing Download PDFInfo
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- CN109113060B CN109113060B CN201811004912.0A CN201811004912A CN109113060B CN 109113060 B CN109113060 B CN 109113060B CN 201811004912 A CN201811004912 A CN 201811004912A CN 109113060 B CN109113060 B CN 109113060B
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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
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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
- E02D5/60—Piles with protecting cases
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- General Engineering & Computer Science (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a pile turning method for a heavy pile casing, which comprises the following steps: s1, distributing a plurality of main lifting lugs on the steel pile casing of the pile to be turned along the length direction of the steel pile casing in the same straight line, and arranging auxiliary lifting lugs on the steel pile casing, wherein the auxiliary lifting lugs are axially symmetrical to the main lifting lugs and are close to one of two ends of the steel pile casing; horizontally hoisting the steel casing to be turned by utilizing two pairs of main lifting lugs which are symmetrical to each other and arranged at two ends of the steel casing; and S2, using the auxiliary lifting lug to assist in lifting the steel casing to the vertical position, and using a pile gripper to grasp the steel casing in an closure manner and lock the steel casing. The pile turning method has the advantages of being stable in pile turning process, capable of protecting the steel pile casing from deformation and the like, and can be widely applied to the technical field of pile turning methods of heavy pile casings.
Description
Technical Field
The invention relates to the technical field of pile turning methods of heavy pile casings. More particularly, the invention relates to a pile overturning method of a heavy pile casing.
Background
At the stake in-process of turning over of current heavy-duty steel pile casing, owing to only the one end design a pair of lug at the steel pile casing, the steel pile casing is when turning over the stake, and great rocking can take place for the one end of its design lug for the steel pile casing's atress department bears great change, and non-directional, irregular atress makes the steel pile casing take place deformation easily, and then influences the pile-forming quality in later stage.
Disclosure of Invention
The invention aims to provide a pile turning method for a heavy pile casing, which is stable in pile turning process and can protect a steel pile casing from deformation.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a method for pile upending of a heavy casing, comprising the steps of:
s1, distributing a plurality of main lifting lugs on the steel pile casing of the pile to be turned along the length direction of the steel pile casing in the same straight line, and arranging auxiliary lifting lugs on the steel pile casing, wherein the auxiliary lifting lugs are axially symmetrical to the main lifting lugs and are close to one of two ends of the steel pile casing;
horizontally hoisting the steel casing to be turned by utilizing two pairs of main lifting lugs which are symmetrical to each other and arranged at two ends of the steel casing;
and S2, using the auxiliary lifting lug to assist in lifting the steel casing to the vertical position, and using a pile gripper to grasp the steel casing in an closure manner and lock the steel casing.
Preferably, the step S1 specifically includes:
s11, moving the pile driving barge to one side of the barge to enable the center lines of the two ships to be vertical to each other, adjusting the pile frame of the pile driving barge to be in a forward tilting state towards the barge, and enabling the hoisting device of the pile frame to be aligned with the center of the steel pile casing to be hoisted;
s12, a pair of main slings and an auxiliary sling of the lifting device are lowered, two pairs of shackles of the main sling are respectively hung on two pairs of main lifting lugs, and shackles of the auxiliary sling are hung on the auxiliary lifting lugs;
s13, synchronously lifting the pair of main slings and the pair of slings to enable the steel casing to be horizontally lifted to meet the ship moving height;
the step S2 specifically includes:
s21, moving the piling barge away from the barge, and gradually and synchronously lifting the main sling and the auxiliary sling close to the auxiliary sling to gradually lift one end of the steel casing to enable the steel casing to be in a vertical state;
s22, the pile frame is inclined backwards to enable the steel pile casing to be in a vertical state, and the pile gripper grips the pile casing in a closed manner and locks the pile casing;
and S23, moving the pile driving ship to the position near the pile position.
Preferably, the pile gripper comprises:
the pair of limiting arms are oppositely arranged, and the middle parts of the limiting arms are provided with inner hollow structures;
the pair of motors correspond to the limiting arms one to one, the motors are arranged in the inner hollow structures of the corresponding limiting arms, the output shafts of the motors are horizontally arranged and coaxially fix one end of a rotating shaft, and the other end of the rotating shaft is fixed on the side wall of the inner hollow structure through a bearing;
the middle part of the rotating shaft is fixed with the fixed pulley, the groove of the fixed pulley can be used for receiving and releasing one end of the connecting steel wire rope, and the other free end of the fixed pulley is fixed with a hook which penetrates out of the limiting arm and is positioned below the limiting arm;
the support plate is horizontally arranged and can be arranged on the pile frame in a vertically sliding mode along the height direction of the pile frame; the upper surface of the supporting plate is provided with a pair of hanging lugs corresponding to the pair of hooks;
the pair of oppositely arranged grooves is formed by inwards sinking the upper surface of the supporting plate and is uniformly distributed on the upper surface of the supporting plate by taking the center of the supporting plate as a circle center;
the side surface of the second plate close to the first plate is sunken inwards to form a clamping groove, one end of a plurality of second springs is fixed at the bottom of the groove, the length direction of the clamping groove is vertical to the side surface of the second plate, the outer side of the clamping groove is clamped with a clamping block matched with the clamping groove, the outer side end of the clamping block protrudes out of the clamping groove, and the inner side of the clamping block is fixed with the other end of the bottom of the plurality of second springs;
a plurality of vertical support rods are arranged in each groove;
when the first plate is not affected by external force, the first spring extends out of the groove, so that the included angle between the first plate and the support plate is 30-60 degrees; when the first plate is stressed to rotate to a horizontal state, the upper end of the supporting rod is abutted to the lower surface of the first plate, and the lower end of the steel casing can be clamped by the clamping block.
Preferably, the outside of the fixture block is wrapped by a layer of elastic rubber.
Preferably, the outer part of the steel wire rope is wrapped with a layer of elastic rubber.
Preferably, the grooves and the fixing means are two pairs.
Preferably, the pile turning method of the heavy casing further comprises a supporting device, which comprises:
the fixing plate is horizontally arranged right below the supporting plate, and one side of the fixing plate is welded on the pile frame;
the cylinder bodies of the oil cylinders are vertically fixed on the fixing plate, and piston rods of the cylinder bodies are fixed on the supporting plate;
the supporting plate can be arranged on the pile frame in a manner of sliding up and down along the height direction of the pile frame through a sliding block.
The invention at least comprises the following beneficial effects:
the invention provides a pile turning method of a heavy pile casing, which is characterized in that at least two pairs of main lifting lugs which are distributed in the same straight line along the length direction of a steel pile casing to be turned and an auxiliary lifting lug which is axially and symmetrically distributed with the main lifting lugs are designed on the steel pile casing to be turned; in the hoisting process, two pairs of main lifting lugs are stressed, the steel pile casing is horizontally hoisted, then the main lifting lug and the auxiliary lifting lug on the top end of the steel pile casing are stressed simultaneously, the steel pile casing is adjusted to be in a vertical state, the steel pile casing cannot greatly shake in the whole process, and therefore the lifting lugs are stressed stably, and the steel pile casing is not deformed basically. And moreover, the pile gripper is designed to embrace two positions of the steel casing so that the steel casing is kept in a vertical state, the steel casing does not shake in the ship moving process of step S23, the lower end of the steel casing is supported, and the deformation of the upper end of the steel casing caused by the overlarge stress at a pair of the main lifting lug and the auxiliary lifting lug at the upper end of the steel casing is prevented.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIGS. 1 to 4 are diagrams illustrating steps of a pile turning method of a steel casing according to the present invention;
FIG. 5 is a top view of a pile gripper according to the present invention;
FIG. 6 is a connection diagram of the motor, the rotating shaft, the fixed pulley and the steel wire rope according to the present invention;
FIG. 7 is a schematic view of the support plate of the present invention;
FIG. 8 is an enlarged view of FIG. 7A;
FIG. 9 is a diagram illustrating a connection relationship between the latch, the second spring and the second plate according to the present invention;
FIG. 10 is a schematic view of a pile gripper according to the present invention gripping a steel casing;
fig. 11 is a schematic view showing that the lower end of the steel casing according to the present invention is caught by a pair of fixing means.
Description of reference numerals: 1. the pile driving device comprises a main lifting lug, 2, an auxiliary lifting lug, 3, a steel casing, 4, a pile gripper, 5, a limiting arm, 6, a motor, 7, a rotating shaft, 8, a fixed pulley, 9, a steel wire rope, 10, a hook, 11, a groove, 12, a fixing device, 13, a first plate, 14, a second plate, 15, a first spring, 16, a supporting rod, 17, a clamping block, 18, a second spring, 19, a fixing plate, 20, an oil cylinder, 21, a supporting plate, 22, a hanging lug, 23 and a pile frame.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and 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.
As shown in fig. 1 to 11, the present invention provides a pile upending method for a heavy casing, comprising the steps of:
s1, a plurality of main lifting lugs 1 are linearly distributed on the steel pile casing 3 of the pile to be turned along the length direction of the steel pile casing 3, and an auxiliary lifting lug 2 is further arranged on the steel pile casing 3, is axially symmetrical to the main lifting lug 1 and is close to one of two ends of the steel pile casing 3;
horizontally hoisting the steel casing 3 to be turned by using two pairs of main lifting lugs 1 which are symmetrical to each other and are arranged at two ends of the steel casing 3;
and S2, the auxiliary lifting lug 2 is used for assisting in lifting the steel casing 3 to the vertical position, and the pile gripper 4 is used for holding the steel casing in a closed manner and locking the steel casing.
In this solution, preferably, the main lifting lug 1 is two pairs, i.e. the lifting lug used in step S1, and the auxiliary lifting lug 2 is equidistant from the pair of lifting lugs located at the same end. In the present 3 pile techniques that turn over of steel casing, steel casing 3 goes up to setting up two lugs usually, and the hoist and mount in-process, steel casing 3 can take place great rocking because of the action of gravity to make a pair of lug department take place deformation, influence the pile-forming quality in later stage. In the pile turning process, the two pairs of main lifting lugs 1 are stressed to horizontally lift the steel casing 3, then the pair of main lifting lugs 1 and the auxiliary lifting lugs 2 at the top end of the steel casing 3 are simultaneously stressed to adjust the steel casing 3 to be in a vertical state, and the steel casing 3 cannot greatly shake in the whole process, so that the stress at the lifting lugs is stable, and the steel casing 3 basically does not deform.
In another technical solution, the step S1 specifically includes:
s11, moving the piling boat to one side of the barge to enable the center lines of the two boats to be mutually vertical, adjusting the pile frame 23 of the piling boat to be in a state of inclining forwards towards the barge, and enabling the hoisting device of the pile frame 23 to be aligned with the center of the steel pile casing 3 to be hoisted;
s12, a pair of main slings and an auxiliary sling of the lifting device are lowered, two pairs of shackles of the main sling are respectively hung on two pairs of main lifting lugs 1, and shackles of the auxiliary sling are hung on the auxiliary lifting lug 2;
s13, synchronously lifting the pair of main slings and the pair of slings to enable the steel casing 3 to be horizontally lifted to meet the ship moving height;
the step S2 specifically includes:
s21, moving the piling barge away from the barge, and gradually and synchronously lifting the main sling and the auxiliary sling close to the auxiliary sling to gradually lift one end of the steel casing 3 to enable the steel casing 3 to be in a vertical state;
s22, inclining the pile frame 23 backwards to enable the steel pile casing 3 to be in a vertical state, and locking the pile gripper 4 to grip the pile casing in a closed manner;
and S23, moving the pile driving ship to the position near the pile position.
In the technical scheme, a sling is put down by a pile driving barge, and a crew on the barge assists in hanging a shackle on a lifting lug of the steel casing 3. It should be noted that in the process of connecting the hoisting points, the sling should be prevented from dragging on the steel casing 3, and the steel rope is wrapped by a rubber tube, so as to ensure that the coating layer of the steel casing 3 is not scratched by the steel rope. The height of the ship is 3-5 m. After the pile embracing device 4 is closed to embrace the pile casing and locked, the pile driving ship is moved to the position close to the pile position according to the rough positioning of a marine pile driving GPS-RTK positioning system. In order to ensure that the protective layer of the steel pile casing 3 is not damaged, the guide wheel on the pile embracing device 4 is made of rubber, the surface of the guide wheel is kept smooth, and lubricating oil is properly coated.
In another technical solution, the pile gripper 4 includes:
the pair of limiting arms 5 are oppositely arranged, and the middle parts of the limiting arms 5 are provided with inner hollow structures;
the motors 6 are in one-to-one correspondence with the limiting arms 5, the motors 6 are arranged in the inner hollow structures of the corresponding limiting arms 5, the output shaft of each motor 6 is horizontally arranged and coaxially fixed with one end of a rotating shaft 7, and the other end of each rotating shaft 7 is fixed on the side wall of the inner hollow structure through a bearing;
the middle part of the rotating shaft 7 is fixed with the fixed pulley 8, the groove of the fixed pulley 8 can be used for receiving and releasing one end of a connecting steel wire rope 9, and the other free end of the fixed pulley 8 is fixed with a hook 10 and penetrates through the limiting arm 5 to be positioned below the limiting arm 5;
a support plate 21 horizontally disposed, wherein the support plate 21 is disposed on the pile frame 23 to be vertically slidable in a height direction of the pile frame 23; the upper surface of the supporting plate 21 is provided with a pair of hanging lugs 22 corresponding to the pair of hooks 10;
at least one pair of oppositely arranged grooves 11, which are formed by inward sinking of the upper surface of the supporting plate 21 and are uniformly distributed on the upper surface of the supporting plate 21 by taking the center of the supporting plate 21 as a circle center;
at least one pair of oppositely arranged fixing devices 12 which correspond to the grooves 11 one by one, wherein the fixing devices 12 are L-shaped and comprise a first plate 13 and a second plate 14 which are vertical to each other, one end of the first plate 13 close to the second plate 14 is arranged on the upper part of the corresponding groove 11 in a way that the first plate can rotate in a vertical plane through a pin shaft, the other end of the first plate 13 far away from the second plate 14 is fixed with the upper ends of a plurality of vertically arranged first springs 15, the lower ends of the first springs 15 are fixed on the bottom of the groove 11, the side surface of the second plate 14 close to the first plate 13 is sunken inwards to form a clamping groove, one end of a plurality of second springs 18 is fixed on the bottom of the groove, the length direction of the clamping groove is vertical to the side surface of the second plate 14, a clamping block 17 matched with the clamping groove is clamped on the outer side of the clamping groove, the outer side end of the clamping block 17 is fixed with the other end of the bottom of the plurality of the second springs 18;
a plurality of vertical support rods 16 are arranged in each groove 11;
when the first plate 13 is not acted by external force, the first spring 15 extends out of the groove 11, so that the included angle between the first plate 13 and the support plate 21 is 30-60 degrees; when the first plate 13 is stressed to rotate to a horizontal state, the upper end of the support rod 16 abuts against the lower surface of the first plate 13, and the lower end of the steel casing can be clamped by the clamping block 17.
In the technical scheme, in step S22, the pile gripper 4 grips the pile casing in a closed manner and locks the pile casing; and S23, moving the pile driving ship to the position near the pile position. At step S23 ship moving in-process, a pair of main lug 1 and the 2 atress of vice lug that are located steel pile casing 3 top make steel pile casing 3 keep the horizontality, and in addition, pile gripper 4 holds one of steel pile casing 3 tightly, if steel pile casing 3 is longer, heavier, ship moving in-process, steel pile casing 3 still can take place to mix, makes steel pile casing 3 and pile gripper 4 between slam constantly, can lead to steel pile casing 3 to warp. In addition, only by the stress of the pair of main lifting lugs 1 and the pair of auxiliary lifting lugs 2, the steel casing 3 may be deformed, and in order to avoid the risk, the invention provides a new pile gripper 4, in the ship moving process of step S23, the pair of hooks 10 of the pile gripper 4 are respectively hung at the pair of hanging lugs 22, when the steel wire rope 9 is tightened, the support plate 21 moves upwards to the lower end of the steel casing 3, the fixing device 12 on the support plate 21 clamps the lower end of the steel casing 3, and then the steel wire rope 9 is tightened, so that the stress of the pair of main lifting lugs 1 and the pair of auxiliary lifting lugs 2 at the upper end of the steel casing 3 is reduced, the support plate 21 is stressed, the stress of the support plate 21 is transferred to the pair of limiting arms 5, and then the stress is transferred to the pile frame 23, namely, the pile frame 23 assists in supporting the lower end of the steel. The fixture blocks 17 on the second plates 14 of the fixing devices 12 abut against the lower end of the steel pile casing 3 to limit the steel pile casing 3, so that the steel pile casing 3 is kept in a vertical state by being matched with the pair of limiting arms 5 of the pile gripper 4. The support bar 16 supports the first plate 13 in a horizontal position while also protecting the spring from being damaged by being compressed all the time within its elastic range. The shapes of the groove, the first plate, the second plate, the clamping groove and the clamping block are not limited, and the clamping block is preferably square. The circumference taking the center of the supporting plate as the circle center is uniformly distributed on the upper surface of the supporting plate, which means that if the two pairs of grooves are formed, the four grooves are uniformly distributed on a circle taking the center of the supporting plate as the circle center.
In another technical scheme, a layer of elastic rubber is wrapped outside the fixture block 17.
In this kind of technical scheme, at fixture block 17 outside parcel elastic rubber, be on the one hand in order to prevent that steel protects a 3 surface by the friction damage, on the other hand, increases fixture block 17's compressible scope, guarantees that fixing device 12 is fit for the steel of the different diameters of block and protects a 3.
In another technical scheme, a layer of elastic rubber is wrapped outside the steel wire rope 9.
In this technical solution, the elastic rubber is provided to prevent the surface of the steel casing 3 from being damaged by friction.
In another technical solution, the grooves 11 and the fixing devices 12 are two pairs.
In this technical solution, two pairs of the grooves 11 and the fixing devices 12 are preferred in the present invention.
In another technical solution, the pile turning method of a heavy pile casing further includes a supporting device, which includes:
a fixing plate 19 horizontally disposed right below the support plate 21, one side of the fixing plate 19 being welded to the pile frame 23;
a plurality of oil cylinders 20, the cylinder bodies of which are vertically fixed on the fixing plate 19, and the piston rods of which are fixed on the supporting plate 21;
the support plate 21 is disposed on the pile frame 23 and can slide up and down along the height direction of the pile frame 23 through a slide block.
In the technical scheme, the oil cylinder 20 can assist in supporting the support plate 21, further assist in supporting the lower end of the steel casing 3, and help in transferring the gravity of the steel casing 3 to the pile frame, so that the pair of limiting arms 5 is prevented from being damaged due to overlarge stress. The sliding block is a T-shaped sliding block, and the supporting plate cannot fall off when sliding up and down on the pile frame, which is a common technology and is not described herein again.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (5)
1. A pile overturning method of a heavy pile casing is characterized by comprising the following steps:
s1, distributing a plurality of main lifting lugs on the steel pile casing of the pile to be turned along the length direction of the steel pile casing in the same straight line, and arranging auxiliary lifting lugs on the steel pile casing, wherein the auxiliary lifting lugs are axially symmetrical to the main lifting lugs and are close to one of two ends of the steel pile casing;
horizontally hoisting the steel casing to be turned by utilizing two pairs of main lifting lugs which are symmetrical to each other and arranged at two ends of the steel casing;
s2, hoisting the steel casing to a vertical position by using the auxiliary lifting lug, closing the steel casing by using a pile gripper, and locking the steel casing; the step S1 specifically includes:
s11, moving the pile driving barge to one side of the barge to enable the center lines of the two ships to be vertical to each other, adjusting the pile frame of the pile driving barge to be in a forward tilting state towards the barge, and enabling the hoisting device of the pile frame to be aligned with the center of the steel pile casing to be hoisted;
s12, a pair of main slings and an auxiliary sling of the lifting device are lowered, two pairs of shackles of the main sling are respectively hung on two pairs of main lifting lugs, and shackles of the auxiliary sling are hung on the auxiliary lifting lugs;
s13, synchronously lifting the pair of main slings and the pair of slings to enable the steel casing to be horizontally lifted to meet the ship moving height;
the step S2 specifically includes:
s21, moving the piling barge away from the barge, and gradually and synchronously lifting the main sling and the auxiliary sling close to the auxiliary sling to gradually lift one end of the steel casing to enable the steel casing to be in a vertical state;
s22, the pile frame is inclined backwards to enable the steel pile casing to be in a vertical state, and the pile gripper grips the pile casing in a closed manner and locks the pile casing;
s23, moving the pile driving boat to the position near the pile; the pile gripper comprises:
the pair of limiting arms are oppositely arranged, and the middle parts of the limiting arms are provided with inner hollow structures;
the pair of motors correspond to the limiting arms one to one, the motors are arranged in the inner hollow structures of the corresponding limiting arms, the output shafts of the motors are horizontally arranged and coaxially fix one end of a rotating shaft, and the other end of the rotating shaft is fixed on the side wall of the inner hollow structure through a bearing;
a fixed pulley is fixed in the middle of the rotating shaft, a groove of the fixed pulley can be used for receiving and releasing one end of the connecting steel wire rope, and a hook is fixed at the other free end of the fixed pulley and penetrates out of the limiting arm to be positioned below the limiting arm;
the support plate is horizontally arranged and can be arranged on the pile frame in a vertically sliding mode along the height direction of the pile frame; the upper surface of the supporting plate is provided with a pair of hanging lugs corresponding to the pair of hooks;
the pair of oppositely arranged grooves is formed by inwards sinking the upper surface of the supporting plate and is uniformly distributed on the upper surface of the supporting plate by taking the center of the supporting plate as a circle center;
the side surface of the second plate close to the first plate is sunken inwards to form a clamping groove, one end of a plurality of second springs is fixed at the bottom of the groove, the length direction of the clamping groove is vertical to the side surface of the second plate, the outer side of the clamping groove is clamped with a clamping block matched with the clamping groove, the outer side end of the clamping block protrudes out of the clamping groove, and the inner side of the clamping block is fixed with the other end of the bottom of the plurality of second springs;
a plurality of vertical support rods are arranged in each groove;
when the first plate is not affected by external force, the first spring extends out of the groove, so that the included angle between the first plate and the support plate is 30-60 degrees; when the first plate is stressed to rotate to a horizontal state, the upper end of the supporting rod is abutted to the lower surface of the first plate, and the lower end of the steel casing can be clamped by the clamping block.
2. The pile upending method for the heavy casing of claim 1, wherein the outside of the fixture block is coated with a layer of elastic rubber.
3. The pile upending method for the heavy casing of claim 1, wherein the steel wire rope is externally wrapped with a layer of elastic rubber.
4. The pile upending method for heavy-duty casing according to claim 1, wherein said recesses and fixing means are two pairs.
5. The pile upending method for a heavy casing of claim 1, further comprising a support device including:
the fixing plate is horizontally arranged right below the supporting plate, and one side of the fixing plate is welded on the pile frame;
the cylinder bodies of the oil cylinders are vertically fixed on the fixing plate, and piston rods of the cylinder bodies are fixed on the supporting plate;
the supporting plate can be arranged on the pile frame in a manner of sliding up and down along the height direction of the pile frame through a sliding block.
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| CN201811004912.0A CN109113060B (en) | 2018-08-30 | 2018-08-30 | Pile turning method for heavy pile casing |
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| CN201811004912.0A CN109113060B (en) | 2018-08-30 | 2018-08-30 | Pile turning method for heavy pile casing |
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| CN109972618B (en) * | 2019-03-13 | 2024-02-02 | 上海雄程海洋工程股份有限公司 | Telescopic pile gripper of pile driving equipment |
| CN115162335B (en) * | 2022-07-06 | 2024-01-26 | 中国建筑第五工程局有限公司 | Deep foundation pit supporting structure |
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