CN107642085A - A kind of casing and karst cave treatment method for cast-in-situ bored pile - Google Patents
A kind of casing and karst cave treatment method for cast-in-situ bored pile Download PDFInfo
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- CN107642085A CN107642085A CN201710981889.XA CN201710981889A CN107642085A CN 107642085 A CN107642085 A CN 107642085A CN 201710981889 A CN201710981889 A CN 201710981889A CN 107642085 A CN107642085 A CN 107642085A
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- casing
- outer casing
- cast
- locating ring
- sleeve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000011065 in-situ storage Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005553 drilling Methods 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to bored concrete pile technology field, specifically, is related to a kind of casing for cast-in-situ bored pile and karst cave treatment method.The casing of the present invention includes the outer casing and interior casing for cooperating, and the length of outer casing is not less than the drilling depth of cast-in-situ bored pile, and interior casing is used to protect the aperture of cast-in-situ bored pile；Outer casing and a locating ring coordinate, and locating ring is used to be sheathed on the outside of outer casing；Outer casing is provided with multiple guiding rail bars axially outside, and multiple guide chutes are provided with correspondingly with the multiple guiding rail bar vertically on the inside of locating ring.The karst cave treatment method of the present invention is realized using the casing of the present invention.The present invention can be reduced preferably to be influenceed because of solution cavity caused by cast-in-situ bored pile.
Description
Technical field
The present invention relates to bored concrete pile technology field, specifically, is related to a kind of casing and solution cavity for cast-in-situ bored pile
Processing method.
Background technology
Cast-in-situ bored pile is current using more extensive pile foundation type, and its mechanization degree is high, and single pile bearing is big, pile body
Rigidity is strong.Existing bored concrete pile is typically to be indulged muscle by multiple main cages and be looped around the peripheral multiple stirrups of the vertical muscle of main cage to form,
When solution cavity geology is constructed, stake holes would generally be circulated into inside solution cavity, because solution cavity connects with stake holes, in concrete perfusion, greatly
The concrete of amount can flow out from bored concrete pile side, and enter from stake holes and the connectivity part of solution cavity inside solution cavity, and logical inside solution cavity
Often with there is larger space, therefore, the concrete of flow-like can be entered inside solution cavity area and showed the solid of solution cavity, it
The top of stake holes can be just reached afterwards, that is to say, that existing bored concrete pile would generally slattern largely when solution cavity geological province is constructed
The superfilled amount of concrete, i.e. concrete is big, fullness coefficient is high, therefore it is higher to result in construction costs.In addition, in drilling by weak
During stream modeling shape soil layer, there is also the problems such as the hole that collapses, necking down, pile foundation displacement.In view of the above-mentioned problems, prior art generally use length shield
Cylinder method is constructed, but this technology still easily produces mortar loss, necking down after steel shield bucket is extracted, and runs into the particularly empty solution cavity of solution cavity
When extract steel pile casting a large amount of concrete can occur and be lost in, have a strong impact on pile foundation quality and construction costs.
The content of the invention
The invention provides a kind of casing for cast-in-situ bored pile, its can overcome prior art certain or some lack
Fall into.
According to a kind of casing for cast-in-situ bored pile of the present invention, it includes the outer casing and interior shield for cooperating
Cylinder, the length of outer casing are not less than the drilling depth of cast-in-situ bored pile, and interior casing is used to prevent the aperture of cast-in-situ bored pile
Shield；Outer casing and a locating ring coordinate, and locating ring is used to be sheathed on the outside of outer casing；Outer casing is provided with multiple lead axially outside
To rail bar, multiple guide chutes are provided with correspondingly with the multiple guiding rail bar vertically on the inside of locating ring.
In a kind of casing for cast-in-situ bored pile of the present invention, outer casing can enter the precalculated position of cast-in-situ bored pile
Row isolation, the problems such as so as to effectively prevent the hole that collapses in boring procedure, necking down, pile foundation displacement；And due to outer shield
The aperture of cylinder can substantially exceed the aperture of bored concrete pile, thus the inwall of outer casing directly will not enter with the concrete in bored concrete pile
Row contact, this makes it possible to extract outer casing again after concrete in bored concrete pile is cementing, and this allows for pulling out when running into solution cavity
Substantial amounts of concrete loss will not occur for casing out, so as to ensure that pile foundation quality and can be effectively reduced construction costs.
In a kind of casing for cast-in-situ bored pile of the present invention, the setting of locating ring causes, when setting outer casing, energy
It is enough that locating ring is fixed first, outer casing is enclosed in locating ring afterwards, so that locating ring was set in outer casing
Preferably external casing it can be oriented in journey, so that outer casing can keep preferably perpendicularity；Also, protect outside
After the completion of cylinder is set, locating ring preferably external casing can also be fixed, so as to preferably prevent the inclined of outer casing
Move.
In a kind of casing for cast-in-situ bored pile of the present invention, interior casing preferably can carry out cooperation with outer casing to be made
With interior casing can be preferably in boring procedure to protecting at the aperture of bored concrete pile.
Preferably, locating ring can be by multiple supporting constructions at ground.So that locating ring can be preferable
Ground is mounted.
Preferably, supporting construction includes being used for being embedded in the foundation block of underground, rotatably arranged with a set of at foundation block
Cylinder；A support bar is provided with sleeve, support bar outer wall coordinates with sleeve lining screw thread, and post upper is used to connect with locating ring
Connect.The setting of foundation block so that supporting construction can have preferably stability and be easy to building site ring when being installed on ground
Operated under border；Coordinated by support bar and sleeve, enabling the height of locating ring is adjusted indirectly by adjusting support bar, from
And can preferably ensure the levelness of locating ring, this just can preferably ensure the perpendicularity that outer casing is set；Moreover, pass through
Support bar and sleeve coordinate, additionally it is possible to the requirement to foundation block depth of burying precision are substantially reduced, consequently facilitating operation；Meanwhile
Pass through support bar and sleeve to coordinate, additionally it is possible in real time adjust the levelness of locating ring during the setting of outer casing
It is whole, so as to preferably prevent outer casing from being shifted during setting.
Preferably, locating ring includes the positioning ring body of ring-type, it is provided with and the multiple guiding on the inside of positioning ring body
Multiple sliding chute seats, the multiple guide chute are located at the multiple sliding chute seat rail bar correspondingly correspondingly；Positioning
Multiple installing arms for being used to coordinate with supporting construction are uniformly distributed circumferentially on the outside of ring body, be provided with installing arm be used for it is right
The installation through-hole for answering support bar to coordinate.So that it is simple in construction, it is easy to implement；Wherein, by the cooperation of guide chute and sliding chute seat,
Enable locating ring preferably external casing carry out be oriented to and circumference on positioning.
Preferably, being provided with sleeve mounting hole in the middle part of foundation block upper surface, sleeve is by bearing in sleeve mounting hole；
The spin-block that a gabarit is in regular hexagon is provided with the middle part of sleeve lateral wall, it is in regular hexagon that outer cross section in one is arranged on the outside of sleeve
Positioning tube, positioning tube endoporus are used to coordinate with spin-block；Foundation block upper surface is located at sleeve mounting hole outside and sleeve mounting hole
The neck of a regular hexagon is coaxially provided with, neck is used to coordinate with positioning tube lower end.The setting of sleeve mounting hole can be preferable
The installation of sleeve is easy on ground, and positioning tube can be set on the outside of sleeve, and positioning tube lower end is inserted into neck, positioning tube endoporus energy
Enough and spin-block is slidably matched in the axial direction, snap fit in the circumferential；, can be by positioning tube from neck when needing turn sleeve
Place is extracted, and sleeve rotating can be preferably driven by rotational positioning cylinder；When by sleeve rotating in place, positioning tube can be inserted
Enter in neck, so as to preferably prevent the turn of sleeve portion, and then can preferably be held in position ring in certain height
At degree.
Preferably, support bar includes the support bar connecting portion positioned at bottom and superposed support bar installation portion, branch
Strut connecting portion is used to coordinate with sleeve lining, and support bar installation portion is used to coordinate with installation through-hole.So as to preferably realize
The connection of locating ring and supporting construction.
Preferably, being provided with mounting flange at interior casing upper end, mounting flange is used to realize interior casing and outer casing
Be fixedly connected.So that interior casing can be fixed preferably.
Based on any above-mentioned casing in the present invention, present invention also offers a kind of karst cave treatment for cast-in-situ bored pile
Method, it can overcome certain or some defects of prior art.
According to the karst cave treatment method for cast-in-situ bored pile of the present invention, it is real that it uses any of the above-described casing to carry out
It is existing, comprise the following steps：
(1) locating ring is installed, locating ring is fixedly installed on pre-position, and ensures locating ring level；
(2) outer casing is set, makes the guide chute being oriented at rail bar and locating ring at outer casing in this step one by one
Corresponding cooperation, outer casing is set in place afterwards；
(3) set and interior casing is installed, interior casing is set in place, filled afterwards between the gap of interior casing and outer casing
Filler is simultaneously tamped, and is afterwards fixedly connected with interior casing upper end with outer casing upper end；
(4) bored pile construction；
(5) casing in extracting, after the completion of drill-pouring pile concreting, the casing in extraction before initial set；
(6) outer casing is extracted, outer casing is extracted when drill-pouring pile concrete reaches some strength.
By the karst cave treatment method for cast-in-situ bored pile of the present invention, solution cavity can be preferably reduced to drill-pouring
The influence of stake, so as to preferably prevent a large amount of losses of concrete, and then can preferably ensure pile foundation quality, and can
Efficiently control construction costs.
Brief description of the drawings
Fig. 1 is the schematic diagram of the casing in embodiment 1；
Fig. 2 is the schematic diagram of the outer casing in embodiment 1；
Fig. 3 is the schematic diagram of the interior casing in embodiment 1；
Fig. 4 is the schematic diagram of the locating ring in embodiment 1；
Fig. 5 is the schematic diagram of the foundation block in embodiment 1；
Fig. 6 is the schematic diagram of the sleeve in embodiment 1；
Fig. 7 is the schematic diagram of the support bar in embodiment 1；
Fig. 8 is the schematic diagram of the positioning tube in embodiment 1.
Embodiment
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.It should be understood that
, embodiment be only the present invention is explained and and it is non-limiting.
Embodiment 1
As shown in Fig. 1~8, a kind of casing for cast-in-situ bored pile is present embodiments provided, it includes being used for phase interworking
The outer casing 110 and interior casing 120 closed, the length of outer casing 110 are not less than the drilling depth of cast-in-situ bored pile, interior casing 120
For protecting the aperture of cast-in-situ bored pile；Outer casing 110 coordinates with a locating ring 130, and locating ring 130 is used to be sheathed on
The outer outside of casing 110；Outer casing 110 is provided with multiple guiding rail bars 111 axially outside, the inner side of locating ring 130 vertically with institute
State multiple guiding rail bars 111 and be provided with multiple guide chutes 131 correspondingly.
In the present embodiment, locating ring 130 can be by multiple supporting constructions 140 at ground.
In the present embodiment, supporting construction 140 includes being used for being embedded in the foundation block 141 of underground, rotatable at foundation block 141
Ground sets a sleeve 142；A support bar 143 is provided with sleeve 142, the outer wall of support bar 143 coordinates with the inner thread of sleeve 142,
The upper end of support bar 143 is used to be connected with locating ring 130.
In the present embodiment, locating ring 130 includes the positioning ring body 410 of ring-type, and the inner side of positioning ring body 410 is provided with and institute
Stating multiple guiding rail bars 111, multiple sliding chute seats 420, the multiple guide chute 131 are located at institute correspondingly correspondingly
State at multiple sliding chute seats 420；The outside of positioning ring body 410 has been uniformly distributed circumferentially multiple for coordinating with supporting construction 140
Installing arm 430, the installation through-hole 431 being used for the cooperation of corresponding support bar 143 is provided with installing arm 430.
In the present embodiment, sleeve mounting hole 510 is provided with the middle part of the upper surface of foundation block 141, sleeve 142 is by bearing located at set
In cylinder mounting hole 510；The spin-block 610 that a gabarit is in regular hexagon is provided with the middle part of the lateral wall of sleeve 142, the outside of sleeve 142 is arranged
Outer cross section is in the positioning tube 144 of regular hexagon in one, and the endoporus of positioning tube 144 is used to coordinate with spin-block 610；In foundation block 141
End face is located at the neck 520 that the outside of sleeve mounting hole 510 is coaxially provided with a regular hexagon with sleeve mounting hole 510, neck
520 are used to coordinate with the lower end of positioning tube 144.
In the present embodiment, support bar 143 is included positioned at the support bar connecting portion 510 of bottom and superposed support bar peace
Dress portion 520, support bar connecting portion 510 are used to coordinate with the inwall of sleeve 142, and support bar installation portion 520 is used for and installation through-hole 431
Coordinate.
In the present embodiment, mounting flange 121 is provided with the interior upper end of casing 120, mounting flange 121 is used to realize interior shield
Cylinder 120 is fixedly connected with outer casing 110.
The present embodiment additionally provides a kind of karst cave treatment method for cast-in-situ bored pile, and it uses the shield in the present embodiment
Cylinder is realized, specifically includes following steps：
(1) locating ring 130 is installed, locating ring 130 is fixedly installed on pre-position, and ensures that locating ring 130 is horizontal；
(2) outer casing 110 is set, makes being oriented at rail bar 111 and locating ring 130 at outer casing 110 in this step
Guide chute 131 coordinates correspondingly, afterwards sets outer casing 110 in place；
(3) set and interior casing 120 is installed, interior casing 120 is set in place, afterwards in interior casing 120 and outer casing 110
Gap between fill and filler 150 and tamp, the interior upper end of casing 120 is fixedly connected with the outer upper end of casing 110 afterwards；
(4) bored pile construction；
(5) casing 120 in extracting, after the completion of drill-pouring pile concreting, the casing 120 in extraction before initial set；
(6) outer casing 110 is extracted, outer casing 110 is extracted when drill-pouring pile concrete reaches some strength.
Schematically the present invention and embodiments thereof are described above, this describes no restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So if common skill of this area
Art personnel are enlightened by it, without departing from the spirit of the invention, without designing and the technical scheme for creativeness
Similar frame mode and embodiment, protection scope of the present invention all should be belonged to.
Claims (8)
- A kind of 1. casing for cast-in-situ bored pile, it is characterised in that：Including for the outer casing (110) of mutual cooperation and interior shield Cylinder (120), the length of outer casing (110) are not less than the drilling depth of cast-in-situ bored pile, and interior casing (120) is used for drill-pouring The aperture of stake is protected；Outer casing (110) coordinates with a locating ring (130), and locating ring (130) is used to be sheathed on outer casing (110) outside；Outer casing (110) is provided with multiple guiding rail bars (111) axially outside, on the inside of locating ring (130) vertically with The multiple guiding rail bar (111) is provided with multiple guide chutes (131) correspondingly.
- A kind of 2. casing for cast-in-situ bored pile according to claim 1, it is characterised in that：Locating ring (130) can By multiple supporting constructions (140) at ground.
- A kind of 3. casing for cast-in-situ bored pile according to claim 2, it is characterised in that：Supporting construction (140) is wrapped The foundation block (141) for being embedded in underground is included, foundation block (141) place is rotatably arranged with a sleeve (142)；Sleeve (142) A support bar (143) is inside provided with, support bar (143) outer wall coordinates with sleeve (142) inner thread, and support bar (143) upper end is used It is connected in locating ring (130).
- A kind of 4. casing for cast-in-situ bored pile according to claim 3, it is characterised in that：Locating ring (130) includes The positioning ring body (410) of ring-type, positioning ring body (410) inner side is provided with and the multiple guiding rail bar (111) corresponds Multiple sliding chute seats (420), the multiple guide chute (131) is located at the multiple sliding chute seat (420) place correspondingly；It is fixed Multiple installing arms (430) for being used to coordinate with supporting construction (140), peace are uniformly distributed circumferentially on the outside of position ring body (410) Fill arm (430) place and be provided with the installation through-hole (431) for being used for coordinating with corresponding support bar (143).
- A kind of 5. casing for cast-in-situ bored pile according to claim 4, it is characterised in that：Foundation block (141) upper end Middle face is provided with sleeve mounting hole (510), and sleeve (142) is by bearing in sleeve mounting hole (510)；Sleeve (142) is outside The spin-block (610) that a gabarit is in regular hexagon is provided with the middle part of side wall, it is in positive six side to be arranged outer cross section in one on the outside of sleeve (142) The positioning tube (144) of shape, positioning tube (144) endoporus are used to coordinate with spin-block (610)；Foundation block (141) upper surface is located at sleeve Mounting hole (510) outside is coaxially provided with the neck (520) of a regular hexagon with sleeve mounting hole (510), and neck (520) is used Coordinate in positioning tube (144) lower end.
- A kind of 6. casing for cast-in-situ bored pile according to claim 5, it is characterised in that：Support bar (143) includes Support bar connecting portion (510) and superposed support bar installation portion (520) positioned at bottom, support bar connecting portion (510) are used Coordinate in sleeve (142) inwall, support bar installation portion (520) is used to coordinate with installation through-hole (431).
- A kind of 7. casing for cast-in-situ bored pile according to claim 1, it is characterised in that：Interior casing (120) upper end Place is provided with mounting flange (121), and mounting flange (121) is used for the fixed company for realizing interior casing (120) and outer casing (110) Connect.
- 8. for the karst cave treatment method of cast-in-situ bored pile, it uses the casing in claim 1 to be realized, including following step Suddenly：(1) locating ring (130) is installed, locating ring (130) is fixedly installed on pre-position, and ensure locating ring (130) water It is flat；(2) outer casing (110) is set, makes the guiding rail bar (111) and locating ring (130) at outer casing (110) place in this step The guide chute (131) at place coordinates correspondingly, afterwards sets outer casing (110) in place；(3) set and interior casing (120) is installed, interior casing (120) is set in place, afterwards in interior casing (120) and outer casing (110) filler (150) is filled between gap and is tamped, interior casing (120) upper end and outer casing (110) upper end is fixed connected afterwards Connect；(4) bored pile construction；(5) casing (120) in extracting, after the completion of drill-pouring pile concreting, the casing (120) in extraction before initial set；(6) outer casing (110) is extracted, outer casing (110) is extracted when drill-pouring pile concrete reaches some strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981889.XA CN107642085B (en) | 2017-10-20 | 2017-10-20 | Pile casing for bored pile and karst cave treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981889.XA CN107642085B (en) | 2017-10-20 | 2017-10-20 | Pile casing for bored pile and karst cave treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107642085A true CN107642085A (en) | 2018-01-30 |
| CN107642085B CN107642085B (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710981889.XA Active CN107642085B (en) | 2017-10-20 | 2017-10-20 | Pile casing for bored pile and karst cave treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523210A (en) * | 2020-11-12 | 2021-03-19 | 中铁四局集团有限公司 | Rapid pile foundation construction method capable of effectively controlling surface settlement in karst cave range |
| CN115613554A (en) * | 2022-12-15 | 2023-01-17 | 河北省水利工程局集团有限公司 | Cast-in-situ bored pile structure and construction method thereof |
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| KR20100122782A (en) * | 2009-05-13 | 2010-11-23 | (주)대우건설 | Pipe fixing structure |
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| CN105332375A (en) * | 2015-11-27 | 2016-02-17 | 中国一冶集团有限公司 | Fixing method for base of pile driver for static-pressed pile by anchor rods |
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| CN207685823U (en) * | 2017-10-20 | 2018-08-03 | 杭州九易建设有限公司 | A kind of casing for cast-in-situ bored pile |
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2017
- 2017-10-20 CN CN201710981889.XA patent/CN107642085B/en active Active
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| JPH08311868A (en) * | 1995-05-17 | 1996-11-26 | Taisei Corp | Leg installation method for surface structure |
| KR20100122782A (en) * | 2009-05-13 | 2010-11-23 | (주)대우건설 | Pipe fixing structure |
| CN102966096A (en) * | 2012-11-30 | 2013-03-13 | 天津第三市政公路工程有限公司 | Construction method for double pile casings of large-diameter cast-in-situ bored pile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523210A (en) * | 2020-11-12 | 2021-03-19 | 中铁四局集团有限公司 | Rapid pile foundation construction method capable of effectively controlling surface settlement in karst cave range |
| CN115613554A (en) * | 2022-12-15 | 2023-01-17 | 河北省水利工程局集团有限公司 | Cast-in-situ bored pile structure and construction method thereof |
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| CN107642085B (en) | 2023-11-21 |
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Effective date of registration: 20231027 Address after: Room ZT342, Science and Technology Building, No. 45 Zhaitang Street, Mentougou District, Beijing, 102300 Applicant after: Beijing Jingneng Dongfang Construction Engineering Co.,Ltd. Address before: 237000 Rural Trade Residential Group, Shunhe Town Street, Yu'an District, Lu'an City, Anhui Province Applicant before: Xie Changshan |
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