CN105369801A - Cast-in-place pile construction device and method - Google Patents
Cast-in-place pile construction device and method Download PDFInfo
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- CN105369801A CN105369801A CN201510662266.7A CN201510662266A CN105369801A CN 105369801 A CN105369801 A CN 105369801A CN 201510662266 A CN201510662266 A CN 201510662266A CN 105369801 A CN105369801 A CN 105369801A
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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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides a cast-in-place pile construction device and method. The cast-in-place pile construction device is formed by connecting a plurality of guide pipes in a sleeving manner, and the guide pipes are of a rigid hollow tubular-column-shaped structure. An upper check ring connected with the Nth guide pipe is arranged on the inner side of the upper end of the Nth guide pipe, the inner diameter of the upper check ring is smaller than that of the Nth guide pipe, and the inner diameter of the upper check ring is identical to the outer diameter of the N-1th guide pipe sleeved with the Nth guide pipe. A lower check ring connected with the Nth guide pipe is arranged on the outer side of the lower end of the Nth guide pipe, the outer diameter of the lower check ring is larger than that of the Nth guide pipe, and the outer diameter of the lower check ring is identical to the inner diameter of the N+1th guide pipe arranged outside the Nth guide pipe in a sleeving manner. The outer diameter of the N+1th guide pipe is larger than that of the Nth guide pipe, and the upper check ring of the Nth guide pipe is arranged on the upper portion of the lower check ring of the N-1th guide pipe in a sleeving and pressing manner. N is a natural number larger than 1. By means of the cast-in-place pile construction device and method, the problems that a cast-in-situ bored pile is prone to break in the concrete pouring process, and remedying cost is high are solved.
Description
Technical field
The present invention relates to pile foundation engineering field, specifically, relate to a kind of filling pile construction device and method.
Background technology
At present, along with expanding economy, urban architecture is more and more higher, and highway bridge is repaiied far away and far away, also more and more higher to the requirement of Foundation Design.Bored pile is widely used in, in building, building and traffic engineering, playing an important role in pile foundation engineering.Bored pile construction comprises boring, clear hole, lays reinforcing cage, fluid concrete.But the bored pile in correlation technique easily broken pile occurs in fluid concrete process, and after broken pile, remedial measure cost is high, even useless stake.The reason of general generation broken pile comprises:
1, conduit pipe laying depth is made mistakes, and departs from concrete surface when conduit is extracted, and forms folder mud layer;
2, conduit blocks and causes powerful tube drawing, makes mud be mixed in concrete;
3, pipe joint produces seepage, and mud enters;
4, concrete supply interrupts, can not continuous pouring, causes plugging.The stake end, inevitably can produce sediment, and the bearing capacity of stake end is reduced.
In fluid concrete process, easily broken pile occurs for the bored pile in correlation technique, and after broken pile, remedial measure cost is high, the problems such as stake of even giving up, also do not propose effective solution.
Summary of the invention
The invention provides a kind of filling pile construction device and method, at least to solve bored pile in correlation technique, the problem of broken pile easily occurs in fluid concrete process.
According to an aspect of the present invention, provide a kind of filling pile construction device, comprise the conduit string be connected together by more piece sheathed catheter, wherein, described conduit is the hollow tube column structure of rigidity; N saves inside conduit upper end has upper back-up ring, wherein, described upper back-up ring and described N save tubes connection, and the internal diameter of described upper back-up ring is less than the internal diameter that described N saves conduit, and the internal diameter of described upper back-up ring is identical with the external diameter that the N-1 be socketed in described N joint conduit saves conduit; Described N saves conduit lower end outside and has lower back-up ring, wherein, described lower back-up ring and described N save tubes connection, and the external diameter of described lower back-up ring is greater than the external diameter that described N saves conduit, and the external diameter of described lower back-up ring is identical with the internal diameter that the N+1 be socketed in outside described N joint conduit saves conduit; The external diameter that described N+1 saves conduit is greater than the external diameter that described N saves conduit, and described N saves the upper back-up ring of conduit and the lower back-up ring snapping of described N-1 joint conduit, and the upper shield ring sleeve that described N saves conduit is pressed in the top that described N-1 saves the lower back-up ring of conduit; Wherein, N be greater than 1 natural number.
Alternatively, the position that M saves the upper back-up ring of conduit and the lower back-up ring snapping of M-1 joint conduit is provided with packing ring, and wherein, M is the natural number being less than or equal to N.
Alternatively, the outer circumference surface often saving the lower back-up ring of conduit in described conduit string has groove, and described groove is for installing described packing ring.
Alternatively, after forming conduit string, multiple outstanding block is connected inside the lower back-up ring of next the joint conduit in described conduit string, described block is outstanding to the inner side of described next joint conduit, and the axle center of described conduit string is less than the external diameter of the lower back-up ring going up a joint conduit most to the distance of the end of the ledge of described block.
Alternatively, be evenly fixed with multiple suspension member outside the upper back-up ring of next the joint conduit in described conduit string, described suspension member is for next joint conduit described in suspending in midair.
According to an aspect of the present invention, provide a kind of cast-in-place pile construction method, comprising:
Obtain more piece conduit, wherein, described conduit is the hollow tube column structure of rigidity; N saves inside conduit upper end has upper back-up ring, wherein, described upper back-up ring and described N save tubes connection, and the internal diameter of described upper back-up ring is less than the internal diameter that described N saves conduit, and the internal diameter of described upper back-up ring is identical with the external diameter that the N-1 be socketed in described N joint conduit saves conduit; Described N saves conduit lower end outside and has lower back-up ring, wherein, described lower back-up ring and described N save tubes connection, and the external diameter of described lower back-up ring is greater than the external diameter that described N saves conduit, and the external diameter of described lower back-up ring is identical with the internal diameter that the N+1 be socketed in outside described N joint conduit saves conduit; Described N is saved the upper back-up ring of conduit and the lower back-up ring snapping of described N-1 joint conduit, the upper shield ring sleeve making described N save conduit is pressed in the top that described N-1 saves the lower back-up ring of conduit, and socket forms conduit string successively; Wherein, N be greater than 1 natural number.
Alternatively, multiple outstanding block is connected inside the lower back-up ring of next the joint conduit in described conduit string, described block is outstanding to the inner side of described next joint conduit, and the axle center of described conduit string is less than the external diameter of the lower back-up ring going up a joint conduit most to the distance of the end of the ledge of described block.
Alternatively, be evenly fixed with multiple suspension member outside the upper back-up ring of next joint conduit described in described conduit string, described suspension member is for next joint conduit described in suspending in midair.
Alternatively, also comprise after formation conduit string:
The described suspension member often saving conduit is connected with suspension apparatus, and described conduit string is hung onto position suitable in priming concrete pile hole;
Be fixed on the operating platform in castinplace pile aperture by described conduit string, be also fixed on described operating platform simultaneously by described suspension apparatus, the top of described conduit string is connected with concrete funnel;
After concreting arrives predetermined altitude, start at the uniform velocity to pull bottom described N to save conduit and arrive certain position, continue to build;
After the described block of described N joint conduit touches the lower back-up ring of N-1 joint conduit, described N saves conduit and drives described N-1 joint conduit to move up, until move all conduits to stake holes position.
Alternatively, in suspention and drawing process, described suspension apparatus is made to remain parallel with described conduit string axis.
By the present invention, adopt filling pile construction device, comprise the conduit string be connected together by more piece sheathed catheter, wherein, conduit is the hollow tube column structure of rigidity; N saves inside conduit upper end has upper back-up ring, and wherein, on this, back-up ring and N save tubes connection, and on this, internal diameter of back-up ring is less than the internal diameter that N saves conduit, and on this, the internal diameter of back-up ring is identical with the external diameter that the N-1 be socketed in N joint conduit saves conduit; N saves conduit lower end outside and has lower back-up ring, and wherein, this lower back-up ring and N save tubes connection, and the external diameter of this lower back-up ring is greater than the external diameter that N saves conduit, and the external diameter of this lower back-up ring is identical with the internal diameter that the N+1 be socketed in outside N joint conduit saves conduit; The external diameter that N+1 saves conduit is greater than the external diameter that N saves conduit, and N saves the upper back-up ring of conduit and the lower back-up ring snapping of N-1 joint conduit, and the upper shield ring sleeve that N saves conduit is pressed in the top that N-1 saves the lower back-up ring of conduit; Wherein, N be greater than 1 natural number.Can shorten conduit and extract the time, make concrete reach continuous pouring, effectively can reduce broken pile and occur, easily there is broken pile in the bored pile solved in correlation technique, and after broken pile, remedial measure cost is high in fluid concrete process, the problems such as stake of even giving up.
Accompanying drawing explanation
Be described embodiment by combining accompanying drawing below, above-mentioned characteristic sum technological merit of the present invention will become apparent and easy understand.
Fig. 1 is the sectional drawing of the filling pile construction device according to the embodiment of the present invention;
Fig. 2 is the schematic diagram of the filling pile construction device according to the embodiment of the present invention;
Fig. 3 is the sectional drawing of the filling pile construction device according to the embodiment of the present invention.
Detailed description of the invention
The embodiment of filling pile construction device and method of the present invention is described below with reference to the accompanying drawings.Those of ordinary skill in the art can recognize, when without departing from the spirit and scope of the present invention, can revise with various different mode or its combination to described embodiment.Therefore, accompanying drawing is illustrative with being described in essence, instead of for limiting the protection domain of claim.In addition, in this manual, accompanying drawing draws not in scale, and identical Reference numeral represents identical part.
Provide a kind of filling pile construction device in the present embodiment, filling pile construction device as shown in Figure 1, comprise the conduit string be connected together by more piece sheathed catheter; Wherein, conduit is the hollow tube column structure of rigidity; N saves inside conduit upper end has upper back-up ring, wherein, on this, back-up ring 101 and N save tubes connection, and on this, internal diameter of back-up ring 101 is less than the internal diameter that N saves conduit, and on this, the internal diameter of back-up ring 101 is identical with the external diameter that the N-1 be socketed in N joint conduit saves conduit; This N saves conduit lower end outside and has lower back-up ring 103, wherein, this lower back-up ring 103 and N save tubes connection, and the external diameter of this lower back-up ring 103 is greater than the external diameter that N saves conduit, and the external diameter of this lower back-up ring 103 is identical with the internal diameter that the N+1 be socketed in outside N joint conduit saves conduit; The external diameter that N+1 saves conduit is greater than the external diameter that N saves conduit, and N saves the upper back-up ring 101 of conduit and lower back-up ring 103 snapping of N-1 joint conduit, and upper back-up ring 101 cover that N saves conduit is pressed in the top that N-1 saves the lower back-up ring 103 of conduit; Wherein, N be greater than 1 natural number.
By above-mentioned filling pile construction device, adopt rigid conduit, the radial-play of tubing string in construction can be reduced and bend.N is saved conduit to the form adopting N to save the upper back-up ring 101 of conduit and lower back-up ring 103 snapping of N-1 joint conduit and N-1 saves conduit socket, successively more piece sheathed catheter is connected into conduit string, the connecting duct time can either be reduced, conduit can be shortened again and extract the time, enable concrete continuous pouring, and then effectively reduce pile breaking phenomenon.
In one alternate embodiment, the position that M saves the upper back-up ring 101 of conduit and lower back-up ring 103 snapping of M-1 joint conduit is provided with sealing packing ring 102, and wherein, M is the natural number being less than or equal to N.Mud can be stoped to enter in conduit, also can prevent concrete from oozing out conduit.
In one alternate embodiment, the outer circumference surface often saving the lower back-up ring 103 of conduit in conduit string has groove, groove, for installing packing ring 102, prevents packing ring 102 play.
In one alternate embodiment, after forming conduit string, multiple outstanding block is connected inside the lower back-up ring 103 of next the joint conduit in this conduit string, this block is outstanding to the inner side of next joint conduit, and the axle center of conduit string is less than the external diameter of the lower back-up ring 103 going up a joint conduit most to the distance of the end of the ledge of this block.Make when lifting bottom N and saving conduit, after the block of N joint conduit touches the lower back-up ring of N-1 joint conduit, N saves conduit and drives N-1 to save conduit to move up, and thus, next joint conduit can utilize this block that each joint conduit is risen to the position in castinplace pile aperture.
In one alternate embodiment, be evenly fixed with multiple suspension member outside the upper back-up ring 101 of next the joint conduit in conduit string, this suspension member is used for suspention next joint conduit.Utilize this suspension member, next joint conduit upwards can be lifted.
In another embodiment, provide a kind of cast-in-place pile construction method, this cast-in-place pile construction method comprises:
Obtain more piece conduit, wherein, conduit is the hollow tube column structure of rigidity; N saves inside conduit upper end has upper back-up ring 101, wherein, on this, back-up ring 101 and N save tubes connection, and on this, internal diameter of back-up ring 101 is less than the internal diameter that N saves conduit, and on this, the internal diameter of back-up ring 101 is identical with the external diameter that the N-1 be socketed in N joint conduit saves conduit; N saves conduit lower end outside and has lower back-up ring 103, wherein, this lower back-up ring 103 and N save tubes connection, and the external diameter of this lower back-up ring 103 is greater than the external diameter that N saves conduit, and the external diameter of this lower back-up ring 103 is identical with the internal diameter that the N+1 be socketed in outside N joint conduit saves conduit; N is saved the upper back-up ring 101 of conduit and lower back-up ring 103 snapping of N-1 joint conduit, upper back-up ring 101 cover making N save conduit is pressed in the top that N-1 saves the lower back-up ring 103 of conduit, successively socket formation conduit string; Wherein, N be greater than 1 natural number.
In one alternate embodiment, multiple outstanding block is connected inside the lower back-up ring 103 of next the joint conduit in conduit string, this block is outstanding to the inner side of next joint conduit, and the axle center of conduit string is less than the external diameter of the lower back-up ring 103 going up a joint conduit most to the distance of the end of the ledge of this block.Make when lifting bottom N and saving conduit, after the block of N joint conduit touches the lower back-up ring of N-1 joint conduit, N saves conduit and drives N-1 to save conduit to move up, and thus, next joint conduit can utilize this block that each joint conduit is risen to the position in castinplace pile aperture.
In one alternate embodiment, be evenly fixed with multiple suspension member outside the upper back-up ring 101 of next the joint conduit in conduit string, this suspension member is used for suspention next joint conduit.Utilize this suspension member, next joint conduit upwards can be lifted.
In one alternate embodiment, after connecting multiple outstanding block inside the lower back-up ring 103 of next the joint conduit in conduit string, also comprise:
The suspension member often saving conduit is connected with suspension apparatus, and the conduit string after assembling is hung onto correct position in priming concrete pile hole;
Be fixed on by conduit string on the operating platform in castinplace pile aperture, also fixed on the operational platform by suspension apparatus, the top of this conduit string is connected with concrete funnel simultaneously;
After concreting arrives certain altitude, start at the uniform velocity to pull bottom N to save conduit and arrive certain position, continue to build;
After the block of N joint conduit touches the lower back-up ring 103 of N-1 joint conduit, N saves conduit and drives N-1 joint conduit to move up, in casting process, make the buried depth of conduit in concrete remain on the position of 2m ~ 6m all the time, until move all conduits to priming concrete pile hole position, namely all sheathed catheters are going up the outside of a joint conduit most.
According to above step, in filling process, do not need repeatedly conduit to be lifted to ground, until all sheathed catheters going up most one joint conduit on, finally again by disposable for conduit lift to ground.Save the time of dismounting conduit, enable concrete continuous pouring.
In one alternate embodiment, in suspention and drawing process, suspension apparatus is made to remain parallel with conduit axis.Make conduit without radial-play in lift process, ensure carrying out smoothly of perfusion.
As shown in Figure 2, filling pile construction device comprises the conduit string be socketed to form by more piece conduit 3.Often joint conduit 3 in this conduit string is suspended on operating platform 2 by suspension apparatus 1.
The sectional drawing of filling pile construction device as shown in Figure 3, this filling pile construction device comprises 2 ~ 3 or many rigid conduits are formed by connecting, and number consecutively from top to bottom, is socketed between conduit mutually.Have the back-up ring being less than conduit diameter inside each end of conduit, lateral tail has the back-up ring being greater than conduit diameter.The diameter of conduit becomes large gradually from top to bottom, above the afterbody back-up ring external diameter of conduit conform to catheter diameter below, above conduit diameter conform to end of conduit back-up ring internal diameter below.Conduit is socketed successively according to diameter is descending, above catheter tail and end of conduit is due to the mutual buckle of back-up ring below, buckle place is provided with back-up ring.After conduit socket, inside the lower back-up ring of next joint conduit, connect multiple block, outside the upper back-up ring of next joint conduit, be evenly fixed with multiple link.
By each joint conduit according to the mutual noose of diameter together, the link of conduit is connected with wire rope, conduit string is transferred to correct position in stake holes, then conduit is fixed on the operating platform in aperture, wire rope is also fixed on the operational platform simultaneously, and keeps wire rope and conduit axis keeping parallelism.Conduit is topmost connected with concrete funnel.After concreting starts to arrive certain altitude, start at the uniform velocity to pull bottom N to save conduit and arrive certain position, continue to build.After the block of N joint conduit touches the lower back-up ring of N-1 joint conduit, N saves conduit and drives N-1 joint conduit to move up, in casting process, the buried depth of conduit in concrete is made to remain on the position of 2m ~ 6m all the time, until move all conduits to stake holes position.
Embodiment of the present invention, does not need promoted by conduit at every turn and remove at whole casting process, builds so do not affect concrete the continuing of funnel.
By each joint conduit according to the mutual noose of diameter together, the link of conduit is connected with wire rope, conduit string is transferred to correct position in stake holes, then conduit is fixed on the operating platform in aperture, wire rope is also fixed on the operational platform simultaneously, and keeps wire rope and conduit axis keeping parallelism.Conduit is topmost connected with concrete funnel.After concreting starts to arrive certain altitude, start at the uniform velocity to pull bottom N to save conduit and arrive certain position, continue to build.After the block of N joint conduit touches the lower back-up ring of N-1 joint conduit, N saves conduit and drives N-1 joint conduit to move up, in casting process, the buried depth of conduit in concrete is made to remain on the position of 2m ~ 6m all the time, until move all conduits to stake holes position.
In sum, by filling pile construction device and method of the present invention, following technique effect is achieved:
1. relative to the complicated procedures of forming lifting, dismantle conduit in the bored pile construction in correlation technique, the present invention does not need conduit be promoted to ground at every turn and remove in whole casting process, conduit can be shortened and extract the time, make concrete reach continuous pouring, effectively can reduce broken pile and occur.Easily there is broken pile in the bored pile solved in correlation technique, and after broken pile, remedial measure cost is high in fluid concrete process, the problems such as stake of even giving up.
2. conduit of the present invention is without being threaded, and coupling part is not fragile, and can change sealing ring as required.
3. guide-tube structure of the present invention is simple, installs, dismantles and construct all more quick.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a filling pile construction device, is characterized in that, comprises the conduit string be connected together by more piece sheathed catheter,
Wherein, described conduit is the hollow tube column structure of rigidity;
N saves inside conduit upper end has upper back-up ring, wherein, described upper back-up ring and described N save tubes connection, and the internal diameter of described upper back-up ring is less than the internal diameter that described N saves conduit, and the internal diameter of described upper back-up ring is identical with the external diameter that the N-1 be socketed in described N joint conduit saves conduit;
Described N saves conduit lower end outside and has lower back-up ring, wherein, described lower back-up ring and described N save tubes connection, and the external diameter of described lower back-up ring is greater than the external diameter that described N saves conduit, and the external diameter of described lower back-up ring is identical with the internal diameter that the N+1 be socketed in outside described N joint conduit saves conduit;
The external diameter that described N+1 saves conduit is greater than the external diameter that described N saves conduit, and described N saves the upper back-up ring of conduit and the lower back-up ring snapping of described N-1 joint conduit, and the upper shield ring sleeve that described N saves conduit is pressed in the top that described N-1 saves the lower back-up ring of conduit;
Wherein, N be greater than 1 natural number.
2. filling pile construction device according to claim 1, is characterized in that, the position that M saves the upper back-up ring of conduit and the lower back-up ring snapping of M-1 joint conduit is provided with packing ring, and wherein, M is the natural number being less than or equal to N.
3. filling pile construction device according to claim 2, is characterized in that, the outer circumference surface often saving the lower back-up ring of conduit in described conduit string has groove, and described groove is for installing described packing ring.
4. filling pile construction device according to claim 1, it is characterized in that, after forming conduit string, multiple outstanding block is connected inside the lower back-up ring of next the joint conduit in described conduit string, described block is outstanding to the inner side of described next joint conduit, and the axle center of described conduit string is less than the external diameter of the lower back-up ring going up a joint conduit most to the distance of the end of the ledge of described block.
5. filling pile construction device according to claim 4, is evenly fixed with multiple suspension member outside the upper back-up ring of next the joint conduit in described conduit string, and described suspension member is for next joint conduit described in suspending in midair.
6. a cast-in-place pile construction method, is characterized in that, comprising:
Obtain more piece conduit, wherein, described conduit is the hollow tube column structure of rigidity;
N saves inside conduit upper end has upper back-up ring, wherein, described upper back-up ring and described N save tubes connection, and the internal diameter of described upper back-up ring is less than the internal diameter that described N saves conduit, and the internal diameter of described upper back-up ring is identical with the external diameter that the N-1 be socketed in described N joint conduit saves conduit;
Described N saves conduit lower end outside and has lower back-up ring, wherein, described lower back-up ring and described N save tubes connection, and the external diameter of described lower back-up ring is greater than the external diameter that described N saves conduit, and the external diameter of described lower back-up ring is identical with the internal diameter that the N+1 be socketed in outside described N joint conduit saves conduit;
Described N is saved the upper back-up ring of conduit and the lower back-up ring snapping of described N-1 joint conduit, the upper shield ring sleeve making described N save conduit is pressed in the top that described N-1 saves the lower back-up ring of conduit, and socket forms conduit string successively;
Wherein, N be greater than 1 natural number.
7. cast-in-place pile construction method according to claim 6, is characterized in that, after forming conduit string, described method also comprises:
Multiple outstanding block is connected inside the lower back-up ring of next the joint conduit in described conduit string, described block is outstanding to the inner side of described next joint conduit, and the axle center of described conduit string is less than the external diameter of the lower back-up ring going up a joint conduit most to the distance of the end of the ledge of described block.
8. cast-in-place pile construction method according to claim 7, is characterized in that, is evenly fixed with multiple suspension member outside the upper back-up ring of next joint conduit described in described conduit string, and described suspension member is for next joint conduit described in suspending in midair.
9. cast-in-place pile construction method according to claim 8, is characterized in that, after connecting multiple outstanding block inside the lower back-up ring of next joint conduit described in described conduit string, described method also comprises:
The described suspension member of described next joint conduit is connected with suspension apparatus, and described conduit string is hung onto position suitable in priming concrete pile hole;
Be fixed on the operating platform in castinplace pile aperture by described conduit string, be also fixed on described operating platform simultaneously by described suspension apparatus, the top of described conduit string is connected with concrete funnel;
After concreting arrives predetermined altitude, start at the uniform velocity to pull bottom described N to save conduit and arrive certain position, continue to build;
After the described block of described N joint conduit touches the lower back-up ring of N-1 joint conduit, described N saves conduit and drives described N-1 joint conduit to move up, until move all conduits to stake holes position.
10. cast-in-place pile construction method according to claim 9, is characterized in that, in suspention and drawing process, makes described suspension apparatus remain parallel with described conduit string axis.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510662266.7A CN105369801B (en) | 2015-10-14 | 2015-10-14 | Filling pile construction device and method |
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| CN201510662266.7A CN105369801B (en) | 2015-10-14 | 2015-10-14 | Filling pile construction device and method |
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| CN105369801B CN105369801B (en) | 2017-09-26 |
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| CN103603342A (en) * | 2013-11-01 | 2014-02-26 | 中冶天工上海十三冶建设有限公司 | Construction method of ultra-long bored concrete pile with large-diameter casing combination |
| CN205875139U (en) * | 2015-10-14 | 2017-01-11 | 中冶交通建设集团有限公司 | Bored concrete pile construction equipment |
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2015
- 2015-10-14 CN CN201510662266.7A patent/CN105369801B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5152639A (en) * | 1990-01-16 | 1992-10-06 | Roberto Visconti | Tubular footing form for building foundation piles of concrete |
| CN2130840Y (en) * | 1992-08-04 | 1993-04-28 | 连云港市机械化施工公司 | Pile-pipe device for preventing necking and segregation of pouring pile |
| CN202000367U (en) * | 2011-01-19 | 2011-10-05 | 龙建路桥股份有限公司 | Novel drilled pile casing |
| CN202644527U (en) * | 2012-07-10 | 2013-01-02 | 上海港务工程公司 | Detachable steel casing of variable-section drilling filling pile |
| CN202730756U (en) * | 2012-07-13 | 2013-02-13 | 中铁二十四局集团上海铁建工程有限公司 | Sleeve connection device for drilling cast-in-situ bored pipe construction |
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| CN205875139U (en) * | 2015-10-14 | 2017-01-11 | 中冶交通建设集团有限公司 | Bored concrete pile construction equipment |
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| CN105369801B (en) | 2017-09-26 |
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