CN110984624B - Ultra-long vertical underground steel pipe pulling-out system and construction method thereof - Google Patents
Ultra-long vertical underground steel pipe pulling-out system and construction method thereof Download PDFInfo
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- CN110984624B CN110984624B CN201911324911.9A CN201911324911A CN110984624B CN 110984624 B CN110984624 B CN 110984624B CN 201911324911 A CN201911324911 A CN 201911324911A CN 110984624 B CN110984624 B CN 110984624B
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- underground steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 73
- 239000010959 steel Substances 0.000 title claims abstract description 73
- 238000010276 construction Methods 0.000 title claims abstract description 52
- 238000009412 basement excavation Methods 0.000 claims abstract description 62
- 238000005520 cutting process Methods 0.000 claims description 23
- 238000003466 welding Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 6
- 238000009933 burial Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 11
- 238000000605 extraction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
Abstract
The system comprises an original vertical underground steel pipe, a rotary digging hole, an automobile crane positioned on the ground of the back side of the rotary digging hole, a lower half part of a pipe body in a free state positioned in a cavity, a supporting ring fixedly connected to the outer wall of the middle part of the pipe body, a lower lifting lug fixedly connected to the upper side of the supporting ring and the four sides of the outer wall of the pipe body, and an upper lifting lug fixedly connected to the outer wall of the four sides of the top end of the upper half part of the pipe body, wherein the lifting hook of the automobile crane is connected with the upper lifting lug in a hanging mode. The invention omits the construction steps of large-area earthwork excavation and outward transportation, saves a large number of large-scale machines such as excavators, earthwork transport vehicles and the like, and has small construction body quantity, less working procedures and high construction efficiency. Not only saves a great deal of time in terms of construction period, but also saves the cost of large-scale machinery in the aspect of economy, and creates good benefits in the aspects of performance and cost.
Description
Technical Field
The invention belongs to the technical field of dismantling of ultra-long abandoned underground structures, and particularly relates to an ultra-long vertical underground steel pipe extraction system and a construction method thereof.
Background
With the development of social economy and the progress of construction technology, on the basis of higher and higher building layer height, urban land is increasingly scarce, and the urban scale is continuously increased. In the expansion process, the original building can not meet the use requirement of the modern city building, and the disassembly and modification construction is unavoidable.
The ground structure is dismantled by mature construction methods such as mechanical dismantling and blasting dismantling, and the underground structure is dismantled by various difficulties such as large buried depth of earthwork and invisible structural form, so that the earthwork construction amount in the dismantling and modifying process is large. In addition, because the underground structure is often used as a force transmission and supporting structure of the overground structure, the length of the underground structure is usually longer, and the existing construction method is that the steps of first-step earthwork excavation, first-section demolition and clearing, second-step earthwork excavation, second-section demolition and clearing and … … are circularly repeated, so that the construction period is seriously delayed, and bad influence is brought to the aspects of performance and economic benefit; meanwhile, in the process of earth excavation, a section of free end is reserved for the underground structure, and great hidden danger is brought to construction safety.
Particularly, the existing construction method for removing the ultra-long vertical underground steel pipe mostly adopts a large-area earthwork excavation method, corresponding underground structure removal and clearing are carried out after the earthwork excavation is completed in one step, then the earthwork excavation is carried out in the next step, more large machines such as an excavator, an earthwork transport vehicle, a crushing gun and the like are put into, the construction workload is large, the difficulty is high, the cost is high, the danger degree is high, and the occupied construction period is long.
Disclosure of Invention
The invention aims to provide an ultra-long vertical underground steel pipe pulling-out system and a construction method thereof, which aim to solve the technical problems of more large-scale dismantling machines, large construction workload, high difficulty, high cost, high risk degree and longer occupied construction period of the existing ultra-long vertical underground steel pipe.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the ultra-long vertical underground steel pipe pulling system comprises a pipe body of an original vertical underground steel pipe, a group of rotary digging holes are dug along the periphery of the pipe body and under the ground through a rotary digging machine, at least three rotary digging holes comprise first digging holes, the first digging holes are positioned on one side of the pipe body and are opposite to the pipe body, the first digging holes are formed by tangential digging with the outer side surface of the pipe body, the rotary digging holes also comprise secondary digging holes and tertiary digging holes which are enclosed on the periphery of the pipe body and are positioned on the left side and the right side of the first digging holes, the secondary digging holes and the tertiary digging holes are also formed by tangential digging with the outer side surface of the pipe body, the first digging holes, the secondary digging holes and the tertiary digging holes are communicated into cavities,
the system is pulled out to vertical underground steel pipe of overlength still includes the automotive crane that is located on the back side ground of the hole of diging soon, the lower half of body is the free state and is located the cavity, and the upper half of body exposes on ground, annular fixedly connected with supporting ring on the outer wall at the middle part of body, the downside card of supporting ring is on the upside surface on ground, the upside of supporting ring, the four side fixedly connected with lower floor's lug of outer wall of body, fixedly connected with upper lifting lug on the four side outer walls on the upper half top of body, automotive crane's lifting hook and upper lifting lug link.
The wall thickness of the pipe body is not less than 10mm, and the outer diameter is 300-600 mm.
The first hole, the second hole and the third hole are the same in excavation depth, the first hole, the second hole and the third hole are equal to the initial buried depth of the original vertical underground steel pipe in the underground, the initial buried depth is not smaller than 100m, meanwhile, the first hole, the second hole and the third hole are the same in excavation diameter, and the first hole, the second hole and the third hole are equal to the original vertical underground steel pipe in diameter.
The lower layer lifting lugs are a group of rectangular steel plates, are welded with the outer side of the pipe wall along the pipe body vertically, are uniformly distributed along the periphery of the pipe body, and are provided with hanging holes.
The upper layer lifting lugs are a group of rectangular steel plates, are welded with the outer side of the pipe wall along the pipe body vertically, are uniformly distributed along the periphery of the pipe body, and are provided with hanging holes.
The support ring is a horizontal steel ring and is welded with the outer side of the pipe wall of the pipe body, and the support ring is formed by welding two half pieces with the same size on the same plane.
The pipe body is provided with a horizontal cutting line, and the horizontal cutting line is positioned above the supporting ring.
A construction method using an ultra-long vertical underground steel pipe pulling-out system comprises the following construction steps:
step one, selecting a rotary digging machine: determining the diameter, the wall thickness and the underground length of the original vertical underground steel pipe through a measuring device, determining the type of a rotary digging machine according to a measured value, wherein the diameter requirement of the rotary digging machine is equal to or slightly larger than that of a pipe body, and carrying out rotary digging positioning by using a total station;
step two, hollowing out the side face: after the rotary excavator is positioned, excavating earthwork on the excavation side of the original vertical underground steel pipe, firstly, carrying out primary drilling to form a primary excavation hole, after the primary excavation hole is formed, respectively carrying out rotary excavation on two sides of the formed primary excavation hole to form a secondary excavation hole and a tertiary excavation hole, and forming three Kong Liancheng cavities;
step three, lateral movement of the steel pipe: vibrating the pipe body from the side by using a vibrating hammer to disconnect the earthwork at the other side opposite to the cavity, and freely placing the pipe body in the cavity to be in a free state;
welding the lifting lug: the top end of the original vertical underground steel pipe is welded with an upper lifting lug, the pipe body is lifted by an automobile crane for a certain distance, then the pipe body is back-gouged at the level with the ground, a supporting ring is welded, and then a lower lifting lug is welded near the upper part of the supporting ring;
step five, hoisting and cutting, namely supporting the pipe body while supporting the automobile crane and the supporting ring, performing back gouging and cutting operation on the upper horizontal cutting line of the supporting ring, dividing the pipe body into an upper pipe and a lower pipe along the horizontal cutting line, transferring the upper pipe through the automobile crane, temporarily supporting the lower pipe by using the supporting ring as a support, and waiting for the next operation;
and step six, continuously repeating the step four and the step five for discharging the pipe until the original vertical underground steel pipe is completely pulled out.
In the construction step four, the number, the material, the size and the weld length of the lower lifting lug and the upper lifting lug are determined by the dead weight of the original vertical underground steel pipe, and the aperture of the lifting hole is determined by the dead weight of the original vertical underground steel pipe and the diameter of a steel wire rope used by the automobile crane.
In the construction step four, the material, the size and the welding seam length of the supporting ring are determined by the dead weight of the original vertical underground steel pipe, and the length of the upper pipe is determined by the length of a transport vehicle.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
according to the invention, one side of an original ultra-long vertical underground steel pipe is hollowed by utilizing a local excavation mode of a rotary excavator, then a vibrating hammer is used for separating the original ultra-long vertical underground steel pipe from original earthwork to be in a free state, and then the original ultra-long vertical underground steel pipe is lifted and fixed in a welding lifting lug and temporary supporting mode and then is segmented section by utilizing gas cutting until the pulling-out operation is completed. The invention omits the construction steps of large-area earthwork excavation and outward transportation, saves a large number of large-scale machines such as excavators, earthwork transport vehicles and the like, and has small construction body quantity, less working procedures and high construction efficiency. Not only saves a great deal of time in terms of construction period, but also saves the cost of large-scale machinery in the aspect of economy, and creates good benefits in the aspects of performance and cost.
The invention uses the method of welding temporary support of the automobile crane and the special-shaped ring, and uses gas cutting to divide the automobile crane into an upper part and a lower part, thereby avoiding the free end of the underground structure caused in the earthwork excavation process in the prior art, reducing the potential safety hazards of personnel and machinery caused by direct exposure of the underground structure, and creating a superior, humanized and safe construction environment.
The invention omits the construction links of large-area excavation and outward transportation of earthwork, and the dust and the dregs are greatly improved compared with the prior art; a large number of excavators and earth transport vehicles are omitted, the number of large-scale machines is greatly reduced, and the emission of fuel oil and waste gas is greatly reduced; the steel pipe is divided by adopting gas cutting, and compared with a grinding wheel cutting machine, the noise is reduced. The invention also has excellent effect in environmental protection.
The method is simple and convenient to operate, high in construction speed, few in use machinery, free of large-area earth excavation, and efficient and safe, and is an ultra-long vertical underground steel pipe pulling method.
Drawings
The invention is described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic drawing of the extraction system and a construction schematic drawing of the construction method step four of the present invention.
Fig. 2 is a partially enlarged view of the site of fig. 1 and a schematic view of the completion of the construction at step five of the construction method.
Fig. 3 is a schematic view of the upper lifting lug of section A-A of fig. 2.
Fig. 4 is a schematic view of the lower lifting lug and support plate of section B-B of fig. 2.
FIG. 5 is a schematic side view of a second construction process of the construction method of the present invention.
Fig. 6 is a schematic top view of the construction method of the present invention in step two.
Reference numerals: 1-pipe body, 2-rotary excavator, 3-ground, 4-first hole, 5-automobile crane, 6-cavity, 7-second hole, 8-third hole, 9-support ring, 10-lower layer lifting lug, 11-upper layer lifting lug, 12-upper pipe, 13-lower pipe and 14-horizontal cutting line.
Detailed Description
The embodiment is shown in figures 1-6, and the ultra-long vertical underground steel pipe extraction system comprises a pipe body 1 of an original vertical underground steel pipe, wherein the wall thickness of the pipe body 1 is not less than 10mm, and the outer diameter is 300-600 mm.
The ultra-long vertical underground steel pipe pulling system further comprises a group of rotary excavation holes which are formed by excavating through a rotary excavator 2 around the pipe body 1 and under the ground 3, wherein at least three rotary excavation holes are formed by excavating firstly, the first excavation holes are positioned on one side of the pipe body 1 and are aligned to the pipe body 1, the first excavation holes 4 are formed by excavating tangentially with the outer side surface of the pipe body 1, the rotary excavation holes further comprise secondary excavation holes 7 and tertiary excavation holes 8 which are formed by excavating circumferentially around the pipe body 1 and positioned on the left side and the right side of the first excavation holes 4, and the secondary excavation holes 7 and the tertiary excavation holes 8 are also formed by excavating tangentially with the outer side surface of the pipe body 1, and the first excavation holes 4, the secondary excavation holes 7 and the tertiary excavation holes 8 are communicated to form cavities 6.
The first excavation hole 4, the second excavation hole 7 and the third excavation hole 8 have the same excavation depth, the first excavation hole 4, the second excavation hole 7 and the third excavation hole 8 have the same initial burial depth in the underground, the initial burial depth is not less than 100m, the first excavation hole 4, the second excavation hole 7 and the third excavation hole 8 have the same excavation diameter, and the third excavation hole 7, the third excavation hole 8 and the original vertical underground steel pipe have the same diameter.
The system is pulled out to vertical underground steel pipe of overlength still includes the automobile crane 5 that is located on the hole dorsal surface ground 3 of digging soon, the lower half of body 1 is the free state and is located cavity 6, and the upper half of body 1 exposes on ground 3, annular fixedly connected with holding ring 9 on the outer wall at the middle part of body 1, the downside card of holding ring 9 is at the upside surface on ground 3, the upside of holding ring 9, the four sides fixedly connected with lower floor's lug 10 of outer wall of body 1, fixedly connected with upper lifting lug 11 on the four side outer walls on the upper half top of body 1, the lifting hook and the upper lifting lug 11 of automobile crane 5 articulate.
The lower layer lifting lugs 10 are a group of rectangular steel plates, are welded on the outer side of the pipe wall along the pipe body 1 and are uniformly distributed along the periphery of the pipe body 1, in this embodiment, two lifting lugs are arranged on each lower layer lifting lug 10, and a lifting hole is formed in each lower layer lifting lug 10. The upper lifting lugs 11 are a group of rectangular steel plates, are welded on the outer side of the pipe wall along the pipe body 1 and are uniformly distributed along the periphery of the pipe body 1, and in the embodiment, four lifting lugs are arranged. Each upper lifting lug 11 is provided with a lifting hole. The supporting ring 9 is a horizontal steel ring and is welded with the outer side of the pipe wall of the pipe body 1, and the supporting ring 9 is formed by welding two half pieces with the same size on the same plane.
The pipe body 1 is provided with a horizontal cutting line 14, and the horizontal cutting line 14 is positioned above the supporting ring 9.
The construction method for the ultra-long vertical underground steel pipe pulling-out system comprises the following construction steps:
step one, selecting a type of a rotary digging machine 2: the diameter, the wall thickness and the underground length of the original vertical underground steel pipe are determined through the measuring device, the model of the rotary digging machine 2 is determined according to the measured value, the diameter requirement of the rotary digging machine 2 is equal to or slightly larger than that of the pipe body 1, and the rotary digging positioning is performed by using the total station.
Step two, hollowing out the side face: after the rotary excavator 2 is positioned, the earthwork on the excavation side of the original vertical underground steel pipe is excavated, first drilling is carried out to form a first excavation hole 4, after the first excavation hole 4 is completed, two sides of the formed first excavation hole 4 are respectively and rotatably excavated with a second excavation hole 7 and a third excavation hole 8, and three Kong Liancheng cavities 6 are formed.
Step three, lateral movement of the steel pipe: the pipe body 1 is vibrated from the side by a vibrating hammer, so that the earthwork on the other side opposite to the cavity 6 is disconnected, and the pipe body is freely placed in the cavity 6 to be in a free state.
Welding the lifting lug: the top end of the original vertical underground steel pipe is welded with an upper lifting lug 11, the automobile crane 5 lifts the pipe body 1 for a certain distance, then the pipe body 1 is back-gouged at the level of the ground 3, the supporting ring 9 is welded, and then the lower lifting lug 10 is welded near the upper part of the supporting ring 9.
Step five, hoisting and cutting, namely carrying out back chipping and cutting operation on the pipe body 1 at the upper horizontal cutting line position of the supporting ring 9 under the condition that the automobile crane 5 and the supporting ring 9 are simultaneously supported, dividing the pipe body 1 into an upper pipe 12 and a lower pipe 13 along the horizontal cutting line 14, transferring the upper pipe 12 through the automobile crane 5, and temporarily taking the supporting ring 9 as a support for the lower pipe 13 to wait for the next operation.
And step six, continuously repeating the step four and the step five for discharging the pipe until the original vertical underground steel pipe is completely pulled out.
In the construction step four, the number, the materials, the sizes and the weld lengths of the lower lifting lug 10 and the upper lifting lug 11 are determined by the dead weight of the original vertical underground steel pipe, and the aperture of the lifting hole is determined by the dead weight of the original vertical underground steel pipe and the diameter of the steel wire rope used by the automobile crane 5.
In the fourth construction step, the material, the size and the welding seam length of the supporting ring 9 are determined by the dead weight of the original vertical underground steel pipe, and the length of the upper pipe 12 is determined by the length of the transport vehicle.
Claims (7)
1. A construction method for applying an ultra-long vertical underground steel pipe pulling-out system is characterized by comprising the following steps: the ultra-long vertical underground steel pipe pulling-out system comprises a pipe body (1) of an original vertical underground steel pipe, and further comprises a group of rotary digging holes which are formed along the periphery of the pipe body (1) and under the ground (3) through a rotary digging machine (2), wherein the pipe body (1) is a round steel pipe, and the rotary digging holes are round holes;
the rotary digging holes are three, the rotary digging holes comprise first digging holes, the first digging holes are positioned on one side of the digging of the pipe body (1) and right to the pipe body (1), the first digging holes (4) are formed by tangentially digging with the outer side surface of the pipe body (1), the rotary digging holes also comprise secondary digging holes (7) and tertiary digging holes (8) which are enclosed around the pipe body (1) and positioned on the left side and the right side of the first digging holes (4), the secondary digging holes (7) and tertiary digging holes (8) are also formed by tangentially digging with the outer side surface of the pipe body (1), the first digging holes (4), the secondary digging holes (7) and the tertiary digging holes (8) are communicated to form a cavity (6),
the ultra-long vertical underground steel pipe pulling-out system further comprises an automobile crane (5) positioned on the ground (3) at the back side of the rotary digging hole, the lower half part of the pipe body (1) is in a free state and positioned in the cavity (6), the upper half part of the pipe body (1) is exposed out of the ground (3), a supporting ring (9) is fixedly connected to the outer wall of the middle part of the pipe body (1) in an annular mode, the lower side of the supporting ring (9) is clamped on the upper surface of the ground (3), a lower layer lifting lug (10) is fixedly connected to the upper side of the supporting ring (9) and four sides of the outer wall of the pipe body (1), an upper layer lifting lug (11) is fixedly connected to the outer wall of the four sides of the top end of the upper half part of the pipe body (1), and the lifting hook of the automobile crane (5) is connected with the upper layer lifting lug (11) in a hanging mode;
the wall thickness of the pipe body (1) is not less than 10mm, and the outer diameter is 300-600 mm;
the first excavation hole (4), the second excavation hole (7) and the third excavation hole (8) have the same excavation depth, the three are equal to the initial burial depth of the original vertical underground steel pipe in the underground, the initial burial depth is not less than 100m, meanwhile, the excavation diameters of the first excavation hole (4), the second excavation hole (7) and the third excavation hole (8) are the same, and the three are equal to the diameter of the original vertical underground steel pipe;
the concrete construction steps are as follows:
step one, selecting a type of a rotary digging machine (2): the diameter, the wall thickness and the underground length of the original vertical underground steel pipe are determined through a measuring device, the model of a rotary digging machine (2) is determined according to a measured value, the diameter requirement of the rotary digging machine (2) is equal to or slightly larger than that of the pipe body (1), and rotary digging positioning is carried out by using a total station;
step two, hollowing out the side face: after the rotary excavating machine (2) is positioned, excavating earthwork on the excavation side of the original vertical underground steel pipe, firstly, carrying out primary drilling to form a primary excavating hole (4), after the primary excavating hole (4) is formed, respectively rotary excavating a secondary excavating hole (7) and a tertiary excavating hole (8) on two sides of the formed primary excavating hole (4), and forming three Kong Liancheng cavities (6);
step three, lateral movement of the steel pipe: vibrating the pipe body (1) from the side by using a vibrating hammer to disconnect the earthwork at the other side opposite to the cavity (6), and freely placing the pipe body in the cavity (6) to be in a free-tilting and side lying state;
welding the lifting lug: the top end of the original vertical underground steel pipe is welded with an upper layer lifting lug (11), an automobile crane (5) lifts the pipe body (1) for a certain distance, then the pipe body (1) is back-gouged at the level of the ground (3), a supporting ring (9) is welded, and then a lower layer lifting lug (10) is welded near the upper part of the supporting ring (9);
step five, hoisting and cutting, namely carrying out back chipping and cutting operation on the upper horizontal cutting line position of the supporting ring (9) under the condition that the pipe body (1) is supported by the automobile crane (5) and the supporting ring (9), dividing the pipe body (1) into an upper pipe (12) and a lower pipe (13) along the horizontal cutting line (14), transferring the upper pipe (12) through the automobile crane (5), and temporarily supporting the lower pipe (13) by taking the supporting ring (9) as a support, and waiting for the next operation;
and step six, continuously repeating the step four and the step five for discharging the pipe until the original vertical underground steel pipe is completely pulled out.
2. The construction method of the ultra-long vertical underground steel pipe drawing system according to claim 1, wherein: the lower layer lifting lugs (10) are rectangular steel plates, are welded to the outer side of the pipe wall along the pipe body (1) vertically, are uniformly distributed along the periphery of the pipe body (1), and are provided with hanging holes.
3. The construction method of the ultra-long vertical underground steel pipe drawing system according to claim 1, wherein: the upper lifting lugs (11) are rectangular steel plates, are welded to the outer side of the pipe wall along the pipe body (1) vertically, are uniformly distributed around the pipe body (1), and are provided with hanging holes.
4. The construction method of the ultra-long vertical underground steel pipe drawing system according to claim 1, wherein: the support ring (9) is a horizontal steel ring and is welded with the outer side of the pipe wall of the pipe body (1), and the support ring (9) is formed by welding two half pieces with the same size on the same plane.
5. The construction method of the ultra-long vertical underground steel pipe drawing system according to claim 1, wherein: the pipe body (1) is provided with a horizontal cutting line (14), and the horizontal cutting line (14) is positioned above the supporting ring (9).
6. The construction method of the ultra-long vertical underground steel pipe drawing system according to claim 1, wherein: in the construction step four, the number, the material, the size and the weld length of the lower lifting lug (10) and the upper lifting lug (11) are determined by the dead weight of the original vertical underground steel pipe, and the aperture of the lifting hole is determined by the dead weight of the original vertical underground steel pipe and the diameter of a steel wire rope used by the automobile crane (5).
7. The construction method of the ultra-long vertical underground steel pipe drawing system according to claim 1, wherein: in the construction step four, the material, the size and the welding seam length of the supporting ring (9) are determined by the dead weight of the original vertical underground steel pipe, and the length of the upper pipe (12) is determined by the length of a transport vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911324911.9A CN110984624B (en) | 2019-12-20 | 2019-12-20 | Ultra-long vertical underground steel pipe pulling-out system and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911324911.9A CN110984624B (en) | 2019-12-20 | 2019-12-20 | Ultra-long vertical underground steel pipe pulling-out system and construction method thereof |
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| CN110984624B true CN110984624B (en) | 2024-04-05 |
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| JPH05272138A (en) * | 1992-03-24 | 1993-10-19 | Nippon Pneumatic Mfg Co Ltd | Method and device for drawing pile |
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| JP2009287326A (en) * | 2008-05-30 | 2009-12-10 | Fukuda Corp | Pulling out method of existing pile |
| CN102493455A (en) * | 2011-12-20 | 2012-06-13 | 中铁第四勘察设计院集团有限公司 | Method for removing foundation piles |
| JP2014218861A (en) * | 2013-05-10 | 2014-11-20 | 大成建設株式会社 | Method for removing existing structure |
| CN211421926U (en) * | 2019-12-20 | 2020-09-04 | 中建一局集团建设发展有限公司 | System is extracted to vertical underground steel pipe of overlength |
-
2019
- 2019-12-20 CN CN201911324911.9A patent/CN110984624B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05272138A (en) * | 1992-03-24 | 1993-10-19 | Nippon Pneumatic Mfg Co Ltd | Method and device for drawing pile |
| JPH08177048A (en) * | 1994-12-22 | 1996-07-09 | Jiyuuwa Koki:Kk | Removing method of pile and excavator used for removing method |
| JPH10306443A (en) * | 1997-04-30 | 1998-11-17 | Nishimatsu Constr Co Ltd | Pile pull-out jig and pile pull-out method using jig |
| JP2001026929A (en) * | 1999-07-15 | 2001-01-30 | Japan Found Eng Co Ltd | Method for removing underground obstacle |
| JP2004308338A (en) * | 2003-04-10 | 2004-11-04 | Yuri Kogyo:Kk | Method for pulling out existing pile and pulling-out device |
| JP2009287326A (en) * | 2008-05-30 | 2009-12-10 | Fukuda Corp | Pulling out method of existing pile |
| CN102493455A (en) * | 2011-12-20 | 2012-06-13 | 中铁第四勘察设计院集团有限公司 | Method for removing foundation piles |
| JP2014218861A (en) * | 2013-05-10 | 2014-11-20 | 大成建設株式会社 | Method for removing existing structure |
| CN211421926U (en) * | 2019-12-20 | 2020-09-04 | 中建一局集团建设发展有限公司 | System is extracted to vertical underground steel pipe of overlength |
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|---|---|
| CN110984624A (en) | 2020-04-10 |
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