CN115075247A - Pulling-out method for steel pipe pile of cross-river channel box girder bracket - Google Patents
Pulling-out method for steel pipe pile of cross-river channel box girder bracket Download PDFInfo
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- CN115075247A CN115075247A CN202210570759.8A CN202210570759A CN115075247A CN 115075247 A CN115075247 A CN 115075247A CN 202210570759 A CN202210570759 A CN 202210570759A CN 115075247 A CN115075247 A CN 115075247A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 173
- 239000010959 steel Substances 0.000 title claims abstract description 173
- 238000000034 method Methods 0.000 title claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000010276 construction Methods 0.000 claims abstract description 22
- 230000005284 excitation Effects 0.000 claims abstract description 15
- 238000011084 recovery Methods 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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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- 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
Abstract
The invention discloses a method for pulling out a steel pipe pile of a cross-river channel box girder bracket, which comprises the steps of exciting the steel pipe pile to be pulled out by using an electric vibration hammer during the pulling out construction of the steel pipe pile of the cross-river channel box girder bracket, liquefying the soil around the steel pipe pile under the high-frequency excitation action of the electric vibration hammer transmitted by the steel pipe pile to gradually separate the pile soil, lifting the steel pipe pile by using a winch to gradually pull out the steel pipe pile while keeping the excitation of the electric vibration hammer, cutting a section of the pulled-out steel pipe pile by using cutting equipment, transferring the cut steel pipe pile by using an automobile crane, circulating the process until the whole steel pipe pile is completely pulled out, realizing the purpose that the steel pipe pile foundation of the box girder bracket can be detached without erecting an over-water trestle by using simple mechanical equipment, saving the material for erecting the trestle and the expense of the crane, and reducing the construction cost, the construction progress is greatly improved; simultaneously, the method is suitable for the pulling-out construction of the box girder support steel pipe pile with low clearance on the water surface.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a method for pulling out a steel pipe pile of a river-crossing box girder bracket.
Background
At present, the erection of a cross-river channel box girder support requires that a steel pipe pile is firstly driven in water, then a bailey support is erected by taking the steel pipe pile as a foundation, and then a template for pouring a cross-river channel box girder is subsequently erected. After the river-crossing bridge is built, the steel pipe piles which are driven in water before need to be pulled out. In the existing method for pulling out the steel pipe pile, a crane is mainly adopted to be matched with a vibration hammer to pull out the steel trestle, in the construction process of the method, the bottom of a box girder needs enough clearance to meet the construction requirement of lifting by a crane boom, but after the construction of a cross-river bridge is finished, the space of the bridge from the water surface is limited, so that the operation of the crane boom is difficult, and the method is not suitable for the removal of the steel pipe pile of the box girder support with low clearance on the water surface; meanwhile, the existing method for pulling out the steel pipe pile needs a large amount of materials to set up a trestle on the water surface to provide a construction platform in the construction process, so that the construction period is long, and the cost is high.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a method for pulling out a steel pipe pile of a river-crossing box girder support, which is suitable for the pulling out construction of the steel pipe pile of the box girder support with low clearance on the water surface, saves the time and cost for setting up an overwater trestle and greatly improves the construction progress.
The purpose of the invention is realized by adopting the following technical scheme:
a method for pulling out steel pipe piles of a cross-river channel box girder support comprises the following steps:
s1, arranging mechanical equipment required by construction: arranging and fixing a winch on a river bank, preparing an electric vibration hammer, a control cabinet, a boat and cutting equipment, carrying out leg supporting operation on a bridge floor of a box girder above the river by adopting a truck crane, and lowering a lifting rope hooked on a lifting hook of the truck crane to a position close to the river surface;
s2, setting the hanging point position: an operator drives a boat to be close to a steel pipe pile to be pulled out, a lifting point fixing seat is fixedly arranged at the bottom of a box girder facing the water surface, a fixed pulley is connected to the lifting point fixing seat, and the lifting point fixing seat, the fixed pulley and the steel pipe pile to be pulled out are positioned on the same vertical line;
s3, mounting an electric vibration hammer: the electric vibration hammer is conveyed to the position below the fixed pulley from the shore by using a boat, a steel cable of the winch bypasses the fixed pulley and is connected with the electric vibration hammer, so that the winch can lift the electric vibration hammer, a clamping opening of the electric vibration hammer is adjusted to be aligned with a steel pipe pile to be pulled out, and the electric vibration hammer is controlled by a control cabinet on the shore;
s4, removing the steel pipe pile: controlling a clamping opening of an electric vibration hammer to clamp the steel pipe pile to be pulled out through a control cabinet and controlling the electric vibration hammer to apply vibration excitation to the steel pipe pile, and after the vibration excitation is carried out for a certain time, lifting the electric vibration hammer by using a winch to drive the steel pipe pile to ascend while keeping the vibration excitation so as to gradually pull out the steel pipe pile;
s5, steel pipe pile segmentation cutting and recovery: and when the electric vibration hammer bites the steel pipe pile and rises to a set height, stopping the winch, loosening a clamping opening of the electric vibration hammer, restarting the winch to continue to rise the electric vibration hammer for a certain distance, driving a boat to be close to the steel pipe pile by an operator, cutting a section of the steel pipe pile above the water surface by using the cutting equipment, driving a boat by the operator to install a hook on the cut steel pipe pile so as to lift the cut steel pipe pile to the bridge floor, and repeating the steps S4 and S5 to circulate until the whole steel pipe pile is completely pulled out.
Further, before the step S2 is performed, an operator drives a boat from a river bank to a position near the hook, pulls the hook and fixes the hook to the steel pipe pile higher than the water surface, makes the truck crane test-hang the lifting rope lifting the hook so that the lifting rope is in a stressed state, and uses the cutting equipment to cut the steel pipe pile to be pulled out so as to cut a first section of steel pipe on the steel pipe pile higher than the water surface, and then hangs the first section of steel pipe to the bridge deck through the hook.
Further, after the first section of steel pipe is cut out, an installation hole is formed in the outer wall, away from the top of the steel pipe pile, and the installation hole is used for installing and fixing the lifting rope.
Further, in step S5, before cutting a steel pipe pile section above the water surface using a cutting device, the operator cleans sludge attached to the surface of the steel pipe pile section being pulled out.
Further, in step S2, a movable pulley is further included, the fixed pulley and the movable pulley are connected to a steel cable of the winch to form a pulley block, and a free end of the steel cable is fixed to the hanging point fixing seat, so that the steel cable of the winch can lift the movable pulley; in step S3, the electric vibration hammer is fixedly attached to the movable pulley.
Furthermore, the fixed pulley is detachably connected with the hoisting point fixing seat through a shackle.
Further, the pulling method of the steel pipe pile of the cross-river box girder bracket further comprises the step of S6, the electric vibration hammer is transferred pile by pile: after the whole steel pipe pile is pulled out, the electric vibration hammer needs to be moved to the vicinity of another steel pipe pile to be pulled out.
Further, the method for transferring the electric vibration hammer comprises the following steps: the lifting device comprises two lifting point fixing seats arranged on the bottom wall of a box girder facing to the water surface at intervals, two sets of pulley blocks and two winches, wherein the pulley blocks are respectively connected with the lifting point fixing seats; the movable pulley of one pulley block is connected with the electric vibration hammer, the movable pulley of the other pulley block is also connected with the electric vibration hammer, the movable pulley of one pulley block is lifted through a winch to lift the electric vibration hammer, and the movable pulley of the other pulley block is lifted through the other winch to lift the electric vibration hammer so as to transfer the electric vibration hammer.
Further, the method for transferring the electric vibration hammer comprises the following steps: and transferring the electric vibration hammer through a truck crane.
Further, the method for transferring the electric vibration hammer comprises the following steps: and unloading the electric vibration hammer, placing the electric vibration hammer on a boat, and driving the boat by an operator to transfer the electric vibration hammer.
Compared with the prior art, the invention has the beneficial effects that:
when the steel pipe pile of the cross-river channel box girder is pulled out, the steel pipe pile to be pulled out is excited by the electric vibration hammer, so that the surrounding soil of the steel pipe pile is liquefied under the high-frequency excitation effect of the electric vibration hammer transmitted by the steel pipe pile to gradually separate the pile soil, the steel pipe pile is lifted by the winch to gradually pull out the steel pipe pile while keeping the excitation of the electric vibration hammer, the pulled-out section of the steel pipe pile is cut by cutting equipment, and finally the cut steel pipe pile is transferred by an automobile crane to circulate until the whole steel pipe pile is completely pulled out; simultaneously, the method is suitable for the pulling-out construction of the box girder support steel pipe pile with low clearance on the water surface.
Drawings
FIG. 1 is a schematic flow diagram of a construction process for removing a steel pipe pile of a cross-river box girder;
FIG. 2 is a schematic structural view of an arrangement of construction machinery related to an embodiment of the present invention;
FIG. 3 is a schematic view of a structure relating to connection of a winch and a pulley block according to an embodiment of the present invention;
FIG. 4 is a schematic longitudinal elevational view of an electric vibratory hammer according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of an embodiment of the present invention relating to the installation of an electric vibratory hammer;
FIG. 6 is a schematic longitudinal elevation view of a first section of steel pipe according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of a first section of steel pipe according to an embodiment of the present invention, which is cut and recycled;
FIG. 8 is a schematic longitudinal elevation view showing the connection of a hook of a truck crane and a steel pipe pile according to an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view illustrating connection of a hook of a truck crane to a steel pipe pile according to an embodiment of the present invention;
FIG. 10 is a first structural schematic diagram of the steel pipe pile cutting and hoisting according to the embodiment of the invention;
FIG. 11 is a second schematic structural diagram of the steel pipe pile cutting and hoisting according to the embodiment of the invention;
FIG. 12 is a first schematic structural diagram relating to steel pipe pile removal according to an embodiment of the present invention;
FIG. 13 is a second schematic structural view of steel pipe pile pulling according to an embodiment of the present invention;
FIG. 14 is a schematic structural view of an electric vibratory hammer according to an embodiment of the present invention;
FIG. 15 is a schematic diagram of a transverse bridge transfer configuration for an electric vibratory hammer according to an embodiment of the present invention;
FIG. 16 is a schematic structural view of an electric vibration hammer according to a second embodiment of the present invention;
fig. 17 is a schematic structural diagram of the electric vibration hammer transfer according to the third embodiment of the present invention.
In the figure: 1. a truck crane; 10. a lifting rope; 2. a fixed pulley; 20. a hoisting point fixing seat; 3. a movable pulley; 4. an electric vibratory hammer; 5. a boat; 6. a winch; 7. provided is a steel pipe pile.
Detailed Description
The present invention will be described with reference to the accompanying drawings and the detailed description, and it should be noted that, in the following description, various embodiments or technical features may be arbitrarily combined to form a new embodiment without conflict.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of 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, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The implementation mode is as follows:
example one
Referring to fig. 1-15, the invention discloses a method for pulling out a steel pipe pile of a cross-river box girder bracket, which comprises the following steps: s1, arranging mechanical equipment required by construction; s2, setting the position of a hanging point; s3, mounting the electric vibration hammer 4; s4, removing the steel pipe pile 7; and S5, cutting and recovering the steel pipe pile 7 in sections.
Wherein, in step S1: a winch 6 is arranged and fixed on a river bank, an electric vibration hammer 4, a control cabinet, a boat 5 and cutting equipment are prepared, a truck crane 1 is adopted on the road surface of a box girder above the river channel to carry out leg supporting operation, and a lifting rope 10 hooked on a lifting hook of the truck crane 1 is lowered to a position close to the river surface.
In step S2: an operator drives the boat 5 to the position near the steel pipe pile 7 to be pulled out, a lifting point fixing seat 20 is fixedly arranged at the bottom of the box girder facing the water surface, a fixed pulley 2 is connected to the lifting point fixing seat 20, and the lifting point fixing seat 20, the fixed pulley 2 and the steel pipe pile 7 to be pulled out are positioned on the same vertical line.
In step S3: the electric vibration hammer 4 is conveyed to the lower part of the fixed pulley 2 from the shore by using a boat 5, a steel cable of a winch 6 is connected with the electric vibration hammer 4 by bypassing the fixed pulley 2, so that the winch 6 can lift the electric vibration hammer 4, the clamping opening of the electric vibration hammer 4 is adjusted to be aligned with a steel pipe pile 7 to be pulled out, and the electric vibration hammer 4 is controlled by a control cabinet on the shore.
In step S4: the control cabinet is used for controlling the clamping opening of the electric vibration hammer 4 to clamp the steel pipe pile 7 to be pulled out and controlling the electric vibration hammer 4 to apply vibration excitation to the steel pipe pile 7, and after the vibration excitation is carried out for 1-2 minutes, the winch 6 is used for lifting the electric vibration hammer 4 to drive the steel pipe pile 7 to ascend and gradually pull out the steel pipe pile 7 while maintaining the vibration excitation.
In step S5: when the electric vibration hammer 4 bites the steel pipe pile 7 and rises to a set height, the winch 6 is stopped, the clamping opening of the electric vibration hammer 4 is loosened, the winch 6 is started again to enable the electric vibration hammer 4 to continue to rise for a certain distance, an operator drives the boat 5 to be close to the steel pipe pile 7 and cuts a section of the steel pipe pile 7 above the water surface by using cutting equipment, the cut steel pipe pile 7 is installed on the cut steel pipe pile 7 through the operation of the operator driving the boat 5 to be hooked and hung, so that the cut steel pipe pile 7 is hung to the bridge floor, and the steps S4 and S5 are repeated until the whole steel pipe pile 7 is completely pulled out.
To sum up, in the invention, when the steel pipe pile 7 of the cross-river channel box girder is pulled out, the steel pipe pile 7 to be pulled out is excited by the electric vibration hammer 4, the soil around the steel pipe pile 7 is liquefied under the high-frequency excitation effect of the electric vibration hammer 4 transmitted by the steel pipe pile 7, so that the pile soil is gradually separated, the steel pipe pile 7 is lifted by the windlass 6 while the excitation of the electric vibration hammer 4 is kept, so as to pull out the steel pipe pile 7 one by one, the pulled-out steel pipe pile 7 is cut by the cutting equipment, and finally the cut steel pipe pile 7 is transferred by the truck crane 1, according to the circulation, until the whole steel pipe pile 7 is completely pulled out, the method realizes that the foundation of the steel pipe pile 7 of the box girder support can be dismantled without erecting an overwater trestle by using simple mechanical equipment, so that the material for erecting the trestle and the crane lease cost are saved, the construction cost is reduced, and the construction progress is greatly improved; meanwhile, the method is suitable for the pulling-out construction of the box girder support steel pipe pile 7 with low clearance on the water surface.
As an application scenario, when the clearance between the top end of a section of the steel pipe pile 7 to be pulled out, which is higher than the water surface, and the bottom wall of the box girder, which faces the water surface, is less than the clearance for installing the electric vibration hammer 4, before the step S2 is implemented, an operator drives a boat 5 from the river bank to the vicinity of a lifting hook of the truck crane 1, pulls the lifting rope 10, installs and fixes the lifting rope 10 on the steel pipe pile 7, which is higher than the water surface, so that the truck crane 1 performs trial hoisting on the lifting rope 10, and the lifting rope 10 is in a stressed state; the operator uses cutting equipment to cut the steel pipe pile 7 of waiting to pull out to cut out first section steel pipe on the steel pipe pile 7 that exceeds the surface of water, then hang the first section steel pipe who cuts out to the bridge face through the lifting hook of truck crane 1. That is, it can be understood that an operator uses a plasma cutting gun (cutting device) to cut a first section of steel pipe from the steel pipe pile 7 at a position of about 1m above the water surface, and the cut first section of steel pipe is lifted to the bridge floor through the truck crane 1, so that the cutting, lifting and recovery of the first section of steel pipe are completed. Further, after the first section of steel pipe is cut, a mounting hole is formed in the outer wall of the top of the steel pipe pile 7, and the mounting hole is used for mounting and fixing a lifting rope so as to lift the next section of cut steel pipe pile 7.
In this embodiment, in step S5, before cutting a steel pipe pile 7 above the water surface by using a cutting device, an operator first cleans sludge attached to the surface of the steel pipe pile 7 from which a segment is pulled out, so that the cutting device can cut the steel pipe pile 7.
In this embodiment, in step S2, the method further includes a movable pulley 3, wherein the fixed pulley 2 and the movable pulley 3 are connected to form a pulley block by the steel cable of the winding machine 6, and the free end of the steel cable is fixed to the hoisting point fixing base, so that the steel cable of the winding machine 6 can lift the movable pulley 3; in step S3, the electric vibration hammer 4 is fixed to the movable pulley 3, so that the electric vibration hammer 4 is driven by the movable pulley 3 to move up and down. That is, it can be understood that the fixed pulley 2 and the movable pulley 3 are connected to form a pulley block by a steel cable of the winch 6 on the bank, the pulley block and the hoisting point fixing seat are conveyed to the position near the steel pipe pile 7 to be pulled out by the boat 5, and the fixed pulley 2 and the hoisting point fixing seat are connected by the shackle, so that the fixed pulley 2 is detached from the hoisting point fixing seat; wherein, the movable pulley 3 is positioned below the fixed pulley 2, the free end of the steel cable rope for connecting the fixed pulley 2 with the movable pulley 3 by the winch 6 is fixed on the hoisting point fixing seat, the hoisting point fixing seat is fixed at the bottom of the box girder, and the hoisting point fixing seat, the pulley block and the steel pipe pile 7 are positioned on the same vertical line. In step S5, when the electric hammer 4 bites the steel pipe pile 7 and rises to a predetermined height, the distance between the movable sheave 3 and the fixed sheave 2 is about 0.5 m.
It can be understood by those skilled in the art that the effect of saving labor cannot be achieved since the fixed sheave 2 only acts to change the direction of force. That is, when pulling a heavy object, the fixed pulley 2 can be used to change the force application direction into the direction of easy force output, the distance of force application pulling is equal to the distance of object rising, the purpose of saving labor cannot be achieved, and the pulling forces at the two ends of the steel cable are equal (not counting the friction force between the steel cable and the fixed pulley 2). Therefore, the movable pulley 3 can achieve the effect of saving labor when a heavy object is pulled, namely, the movable pulley 3 can be regarded as a labor-saving lever, the point O is a fulcrum of the lever, the shaft of the movable pulley 3 is a resistance action point, the action force of the lifted object to the shaft is resistance, and the action force of the rope to the shaft is power; when the heavy object is lifted, if the ropes on the two sides are parallel, the power wall is twice as large as the resistance arm; when the movable pulley 3 is balanced, the power is half of the resistance. Therefore, if the gravity borne by the movable pulley 3 is not counted, half of the force can be saved by using the movable pulley 3, but the direction of the force cannot be changed at the moment, and the weight can be lifted only by pulling the rope upwards. Therefore, the pulley block is formed by combining the fixed pulley 2 and the movable pulley 3, so that the effect of changing the direction of force can be realized, and the effect of saving labor can be achieved. That is, the invention can save labor when pulling out the steel pipe pile 7 of the cross-river channel box girder, reduce the load born by the fixed pulley 2, the hoisting point fixing seat 20 and the winch 6, and improve the safety factor.
In this embodiment, the method for removing the steel pipe pile 7 of the cross-river box girder bracket further includes S6, transferring the electric vibration hammer 4 pile by pile: after the complete removal of one steel-pipe pile 7, the electric vibration hammer 4 needs to be moved to the vicinity of another steel-pipe pile 7 to be removed to remove all the steel-pipe piles 7.
In the present embodiment, as shown in fig. 13 and 14, the method of transferring the electric vibration hammer 4 is: the lifting device comprises two lifting point fixing seats 20 which are arranged on the bottom wall of a box girder facing to the water surface at intervals, two sets of pulley blocks which are respectively connected with the lifting point fixing seats 20 and two winches 6; the movable pulley 3 of one pulley block is connected with the electric vibration hammer 4, the movable pulley 3 of the other pulley block is also connected with the electric vibration hammer 4, the movable pulley 3 of one pulley block is lifted through a winch 6 to lift the electric vibration hammer 4, and the movable pulley 3 of the other pulley block is lifted through the other winch 6 to lift the electric vibration hammer 4 so as to transfer the electric vibration hammer 4.
Example two
The present embodiment is different from the first embodiment in the method of transferring the electric vibration hammer 4.
In the present embodiment, as shown in fig. 16, the method of transferring the electric vibration hammer 4 is: the electric vibratory hammer 4 is transferred by the truck crane 1. Specifically, an operator drives a boat 5 to lower a hook of a truck crane 1 to a position close to the water surface, the hook of the truck crane 1 is pulled to an electric vibration hammer 4 fixedly installed on a movable pulley 3, at this time, a clamping opening of the electric vibration hammer 4 is in a loosening state, the truck crane 1 is subjected to test hoisting, a hoisting rope 10 is in a stress state, at this time, the operator uses the hoisting rope to pull the electric vibration hammer 4, the electric vibration hammer 4 is transferred to a proper position through a winch 6 matched with the truck crane 1, the electric vibration hammer 4 is unloaded from the driven pulley 3, and then the truck crane 1 is hoisted to the bridge floor.
EXAMPLE III
The present embodiment is different from the above-described embodiments in the method of transferring the electric vibration hammer 4.
In the present embodiment, as shown in fig. 17, the method of transferring the electric vibration hammer 4 is: the electric vibration hammer 4 is detached and placed on the boat 5, and the electric vibration hammer 4 is transferred by the operator driving the boat 5.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A method for pulling out a steel pipe pile of a cross-river channel box girder support is characterized by comprising the following steps:
s1, arranging mechanical equipment required by construction: arranging and fixing a winch on a river bank, preparing an electric vibration hammer, a control cabinet, a boat and cutting equipment, carrying out leg supporting operation on a bridge floor of a box girder above the river by adopting a truck crane, and lowering a lifting rope hooked on a lifting hook of the truck crane to a position close to the river surface;
s2, setting the hanging point position: an operator drives a boat to be close to a steel pipe pile to be pulled out, a lifting point fixing seat is fixedly arranged at the bottom of a box girder facing the water surface, a fixed pulley is connected to the lifting point fixing seat, and the lifting point fixing seat, the fixed pulley and the steel pipe pile to be pulled out are positioned on the same vertical line;
s3, mounting an electric vibration hammer: the electric vibration hammer is conveyed to the position below the fixed pulley from the shore by using a boat, a steel cable of the winch bypasses the fixed pulley and is connected with the electric vibration hammer, so that the winch can lift the electric vibration hammer, a clamping opening of the electric vibration hammer is adjusted to be aligned with a steel pipe pile to be pulled out, and the electric vibration hammer is controlled by a control cabinet on the shore;
s4, removing the steel pipe pile: controlling a clamping opening of an electric vibration hammer to clamp the steel pipe pile to be pulled out through a control cabinet and controlling the electric vibration hammer to apply vibration excitation to the steel pipe pile, and after the vibration excitation is carried out for a certain time, lifting the electric vibration hammer by using a winch to drive the steel pipe pile to ascend while keeping the vibration excitation so as to gradually pull out the steel pipe pile;
s5, steel pipe pile segmentation cutting and recovery: and when the electric vibration hammer bites the steel pipe pile and rises to a set height, stopping the winch, loosening a clamping opening of the electric vibration hammer, restarting the winch to continue to rise the electric vibration hammer for a certain distance, driving a boat to be close to the steel pipe pile by an operator, cutting a section of the steel pipe pile above the water surface by using the cutting equipment, installing and fixing a lifting rope on the cut steel pipe pile by driving the boat by the operator so as to lift the cut steel pipe pile to the bridge floor, and repeating the steps S4 and S5 to circulate until the whole steel pipe pile is completely pulled out.
2. The method for pulling out a steel pipe pile of a cross-waterway box girder support according to claim 1, wherein before the step S2 is performed, an operator drives a boat from a river bank to the vicinity of the hook, pulls the hook and fixes the hook to the steel pipe pile higher than the water surface, the truck crane tries to hang the lifting rope for lifting the hook so that the lifting rope is in a stressed state, the operator cuts the steel pipe pile to be pulled out by using the cutting device so as to cut out a first section of steel pipe on the steel pipe pile higher than the water surface, and then the first section of steel pipe is hung to the bridge deck by the hook.
3. The method for pulling out the steel pipe pile of the cross-river box girder bracket according to claim 2, wherein after the first section of the steel pipe is cut out, a mounting hole is formed in the outer wall of the top of the steel pipe pile, and the mounting hole is used for mounting and fixing the lifting rope.
4. The method for pulling out a steel pipe pile of a cross-river box girder bracket according to claim 1, wherein in step S5, before cutting a section of the steel pipe pile above the water surface using a cutting device, an operator cleans sludge attached to the surface of the steel pipe pile from which the section is pulled out.
5. The method for pulling out a steel pipe pile of a cross-river box girder bracket of claim 1, wherein in the step S2, the method further comprises a movable pulley, the fixed pulley and the movable pulley are connected by a steel cable of the winch to form a pulley block, and a free end of the steel cable is fixed on the hanging point fixing seat, so that the steel cable of the winch can lift the movable pulley; in step S3, the electric vibration hammer is fixedly attached to the movable pulley.
6. A method for pulling out a steel pipe pile of a cross-river box girder bracket according to claim 1 or 5, wherein the fixed pulley is detachably connected with the hoisting point fixing seat through a shackle.
7. A method of removing a steel pipe pile from a box girder support of a river crossing according to claim 1, further comprising S6, transferring the electric vibration hammer pile by pile: after the whole steel pipe pile is pulled out, the electric vibration hammer needs to be moved to the vicinity of another steel pipe pile to be pulled out.
8. The method for pulling out the steel pipe pile of the cross-river box girder bracket according to claim 7, wherein the method for transferring the electric vibration hammer comprises the following steps: the hoisting device comprises two hoisting point fixing seats arranged on the bottom wall of a box girder facing to the water surface at intervals, two sets of pulley blocks and two winches, wherein the pulley blocks and the two winches are respectively connected with the hoisting point fixing seats; the movable pulley of one pulley block is connected with the electric vibration hammer, the movable pulley of the other pulley block is also connected with the electric vibration hammer, the movable pulley of one pulley block is lifted through a winch to lift the electric vibration hammer, and the movable pulley of the other pulley block is lifted through the other winch to lift the electric vibration hammer so as to transfer the electric vibration hammer.
9. The method for pulling out the steel pipe pile of the cross-river box girder bracket according to claim 7, wherein the method for transferring the electric vibration hammer comprises the following steps: transferring the electric vibratory hammer through the truck crane.
10. The method for pulling out the steel pipe pile of the cross-river box girder bracket according to claim 7, wherein the method for transferring the electric vibration hammer comprises the following steps: and unloading the electric vibration hammer, placing the electric vibration hammer on a boat, and driving the boat by an operator to transfer the electric vibration hammer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210570759.8A CN115075247A (en) | 2022-05-24 | 2022-05-24 | Pulling-out method for steel pipe pile of cross-river channel box girder bracket |
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| JPH0841856A (en) * | 1994-07-27 | 1996-02-13 | Mitsubishi Heavy Ind Ltd | Level-above-water controlling sand pile driving boat |
| JP2001262569A (en) * | 2000-03-21 | 2001-09-26 | Inomata Juki Kogyo Kk | Pile pulling-out method and pile pulling-out work machine |
| CN101538857A (en) * | 2009-04-10 | 2009-09-23 | 黄河水利委员会河南黄河河务局 | Pile extraction construction method |
| CN202090349U (en) * | 2011-05-19 | 2011-12-28 | 中天建设集团有限公司 | Device for removing square pile |
| CN103174141A (en) * | 2013-03-26 | 2013-06-26 | 青岛宝基利工程技术咨询有限公司 | Intertidal zone beam lower supporting frame steel pipe pile pulling-out device and method |
| CN104196026A (en) * | 2014-05-27 | 2014-12-10 | 天津二十冶建设有限公司 | A method for pulling out underwater steel pipe piles for temporary projects of bridges |
| CN108894226A (en) * | 2018-09-28 | 2018-11-27 | 中国冶集团有限公司 | Pile pulling device under a kind of bridge |
| CN109252521A (en) * | 2018-10-31 | 2019-01-22 | 中国冶集团有限公司 | Steel-pipe pile extracts equipment and its construction method in confined space water under girder steel |
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| JPH0841856A (en) * | 1994-07-27 | 1996-02-13 | Mitsubishi Heavy Ind Ltd | Level-above-water controlling sand pile driving boat |
| JP2001262569A (en) * | 2000-03-21 | 2001-09-26 | Inomata Juki Kogyo Kk | Pile pulling-out method and pile pulling-out work machine |
| CN101538857A (en) * | 2009-04-10 | 2009-09-23 | 黄河水利委员会河南黄河河务局 | Pile extraction construction method |
| CN202090349U (en) * | 2011-05-19 | 2011-12-28 | 中天建设集团有限公司 | Device for removing square pile |
| CN103174141A (en) * | 2013-03-26 | 2013-06-26 | 青岛宝基利工程技术咨询有限公司 | Intertidal zone beam lower supporting frame steel pipe pile pulling-out device and method |
| CN104196026A (en) * | 2014-05-27 | 2014-12-10 | 天津二十冶建设有限公司 | A method for pulling out underwater steel pipe piles for temporary projects of bridges |
| CN108894226A (en) * | 2018-09-28 | 2018-11-27 | 中国冶集团有限公司 | Pile pulling device under a kind of bridge |
| CN109252521A (en) * | 2018-10-31 | 2019-01-22 | 中国冶集团有限公司 | Steel-pipe pile extracts equipment and its construction method in confined space water under girder steel |
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