CN115125940A - Full casing cast-in-place pile without pretreatment in karst cave region - Google Patents
Full casing cast-in-place pile without pretreatment in karst cave region Download PDFInfo
- Publication number
- CN115125940A CN115125940A CN202210807661.XA CN202210807661A CN115125940A CN 115125940 A CN115125940 A CN 115125940A CN 202210807661 A CN202210807661 A CN 202210807661A CN 115125940 A CN115125940 A CN 115125940A
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- karst cave
- pretreatment
- full
- sleeve
- concrete pile
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- 230000002787 reinforcement Effects 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 210000003205 muscle Anatomy 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000012943 hotmelt Substances 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims 3
- 238000010276 construction Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 4
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
Abstract
The invention discloses a full-sleeve cast-in-place pile without pretreatment in a karst cave area, which comprises a reinforcement cage and a sleeve, wherein the sleeve is sleeved outside the reinforcement cage, the height of the sleeve is the same as that of a karst cave opening, the sleeve is positioned in a pile hole and between the bottom and the top of the karst cave opening, and concrete is poured in the pile hole. Through the mode, the casing pipe can form lateral enclosure of the cast-in-place pile, so that concrete can not enter the karst cave from the karst cave opening when being cast into a pile hole, the karst cave does not need to be pretreated in the construction process of the cast-in-place pile, a large amount of filling materials are not used to save the engineering cost, the integral construction period of the cast-in-place pile can be shortened, and the integral construction efficiency of foundation pit engineering is improved.
Description
Technical Field
The invention relates to the technical field of cast-in-place piles, in particular to a full-casing cast-in-place pile without pretreatment in a karst cave area.
Background
In the foundation pit supporting construction engineering, a cast-in-place pile is a pile hole with a large depth which is impacted on the ground, then a reinforcement cage is placed in the pile hole, and finally concrete is poured into the pile hole to form the cast-in-place pile. When construction is carried out in a karst cave area, pile holes are usually poured into the karst cave, and due to the fact that the karst cave is communicated with the pile holes, when concrete is poured into the pile holes, the concrete flows out from the side faces of the poured piles and enters the inside of the karst cave from the communication position (namely a karst cave opening) between the pile holes and the karst cave.
For the existing cast-in-place piles in a karst cave area, pretreatment work such as filling block stones in the karst cave is usually carried out before the cast-in-place piles are constructed, and the method needs more karst cave filling materials and is higher in cost; in addition, the construction period of the cast-in-place pile is prolonged, and therefore the overall construction efficiency of foundation pit engineering is affected.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a full casing cast-in-place pile without pretreatment in a karst cave area, which can solve the technical problems.
(II) technical scheme
In order to solve the technical problems, the invention provides the following technical scheme: a full casing bored concrete pile without pretreatment in a karst cave area comprises: the sleeve is positioned in the pile hole and between the bottom and the top of the hole dissolving opening, and concrete is poured in the pile hole.
Preferably, the sleeve is sleeved outside the reinforcement cage in a welding mode, and the thickness of the sleeve is larger than 15 mm. .
Preferably, the bottom of the sleeve is provided with a support steel bar.
Preferably, the sleeve is made of steel.
Preferably, the reinforcement cage comprises a plurality of spaced apart longitudinal bars.
Preferably, the reinforcement cage further comprises a spiral rib, and the spiral rib is arranged on the longitudinal rib in a surrounding mode.
Preferably, the density degree of the top position of the spiral rib is larger than that of the bottom position of the spiral rib.
Preferably, the longitudinal ribs are provided with stiffening hoops.
Preferably, the number of the stiffening hoops is multiple, and the stiffening hoops are arranged at intervals up and down.
Preferably, the steel bar cage filling device further comprises an inflator pump arranged outside the ground and a detachable and movable filling device arranged in the steel bar cage or outside the sleeve, wherein the filling device is provided with an inflatable bag contained in the karst cave opening, a driving piece used for driving the inflatable bag to move into the karst cave opening and a hot melting piece used for hot melting the inflatable bag, and the inflatable bag is communicated with the inflator pump through a pipe body.
(III) advantageous effects
Compared with the prior art, the invention provides a full casing cast-in-place pile without pretreatment in a karst cave region, which has the following beneficial effects: through setting up the sleeve pipe, the outside of steel reinforcement cage is located to the sleeve pipe cover, and the sleeve pipe is located the downthehole bottom that just is located the solution opening of stake, between the top, the sleeve pipe forms bored concrete pile's side direction enclosure for can not get into the solution opening inside from the solution opening during toward the downthehole concreting of stake, need not to carry out the preliminary treatment to the solution opening in bored concrete pile's work progress, avoid using a large amount of stopping in order to save engineering cost, can shorten the holistic construction cycle of bored concrete pile in addition, improve foundation ditch engineering's whole efficiency of construction promptly.
Drawings
Fig. 1 is a schematic structural diagram of a full-casing cast-in-place pile without pretreatment in a karst cave region according to the present invention.
The reference numbers in the figures are: the steel reinforcement cage comprises a steel reinforcement cage 1, a sleeve 2, a longitudinal rib 3, a spiral rib 4 and a stiffening hoop 5.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a full casing cast-in-place pile without pretreatment in a karst cave region, which comprises the following components: a reinforcement cage 1 and a sleeve 2. The sleeve 2 is sleeved on the outer side of the reinforcement cage 1, the height of the sleeve 2 is the same as that of the hole dissolving opening, the sleeve 2 is located in the pile hole and located between the bottom and the top of the hole dissolving opening, and concrete is poured into the pile hole. The pile hole is communicated with the karst cave through the karst cave opening, and the sleeve 2 can just block the karst cave opening.
Compared with the prior art, the invention provides a full casing cast-in-place pile without pretreatment in a karst cave region, which has the following beneficial effects: through setting up sleeve pipe 2, the outside of steel reinforcement cage 1 is located to 2 covers of sleeve pipe, and sleeve pipe 2 is located the downthehole bottom that just is located the solution opening of stake, between the top, sleeve pipe 2 forms the side direction enclosure of bored concrete pile, make can not get into inside the solution opening from the solution opening during toward the downthehole concreting of stake, need not to carry out the preliminary treatment to the solution opening in the work progress of bored concrete pile, avoid using a large amount of stopping in order to save engineering cost, can shorten the holistic construction cycle of bored concrete pile in addition, improve foundation ditch engineering's whole efficiency of construction promptly.
The concrete accessible welding mode cover of sleeve pipe 2 locates the outside of steel reinforcement cage 1, when the construction, will overlap the steel reinforcement cage 1 that is equipped with sleeve pipe 2 and wholly place in the stake hole, then toward the downthehole cast-in-place concrete of stake to form bored concrete pile.
In addition, in order to reinforce the stability of the casing 2, a support bar may be provided at the bottom of the casing 2.
It is noted that in some embodiments, the sleeve 2 is movably sleeved outside the reinforcement cage 1 for better precision construction. Specifically, the outside of steel reinforcement cage 1 is provided with a rectangular straight-bar along its length direction, and rectangular straight-bar is provided with a plurality of nuts along its length direction interval is fixed, and sleeve pipe 2 is provided with the screw hole that corresponds with a plurality of nuts along the length direction interval of steel reinforcement cage 1, and threaded connection has the screw rod in the nut of screw hole, makes can be as required with sleeve pipe 2 threaded connection in the nut in the outside of steel reinforcement cage 1 to set up in optional position.
Further, in some embodiments, the full-casing cast-in-place pile without pretreatment in the cavern region further comprises an inflator pump arranged outside the ground and a filling device detachably and movably arranged in the reinforcement cage 1 or outside the casing 2, wherein the filling device is used for inflating an inflatable bag.
Preferably, the filling device is removable and movably arranged inside the reinforcement cage 1. Furthermore, the filling device is provided with an inflatable bag which is contained in the opening of the karst cave, a driving piece which is used for driving the inflatable bag to move into the opening of the karst cave and a hot melting piece which is used for hot melting the inflatable bag, and the inflatable bag is communicated with the inflator pump through a pipe body. It should be understood that the inflatable bag is inflated and filled in the karst cave opening, so that firstly, filling materials are saved, secondly, manual operation is not needed, the size of the karst cave opening is not limited, the karst cave opening can be adapted to the karst cave openings with different sizes, and cost is effectively saved.
In addition, the filling device is provided with a detector for detecting the karst cave opening, and the detector can detect whether the filling device moves to the karst cave opening or not and is used for detecting the size of the karst cave opening. Preferably, in the construction process, the filling device is controlled to move in the reinforcement cage 1 along the vertical direction, the filling device is moved to the next position to perform vertical movement after the vertical movement of the current position is determined, in the moving process, when the detector detects that a cave opening exists, the filling device is controlled to stop moving, the size of the cave opening is detected through the detector, whether the size of the cave opening meets the filling condition is judged, if the cave opening meets the filling condition, the inflating bag is driven to move to the cave opening through the driving piece, whether the inflating bag is in the cave opening is detected in the moving process, if the inflating bag is determined to be in the cave opening, the inflating pump is controlled to inflate the inflating bag so that the inflating bag is filled in the cave opening, after the inflating with the inflating pump is completed, the inflating opening of the inflating bag is thermally melted through the hot melting piece to seal the inflating bag and enable the inflating bag to be independently accommodated in the cave opening, and after the inflatable bag is sealed, taking the inflating device out of the pile hole, and simultaneously controlling the sleeve 2 to move to the opening of the karst cave so as to seal the opening of the karst cave in a multiple mode.
It should be understood that the driving member of this embodiment includes a driving cylinder, such as an air cylinder and a hydraulic oil cylinder, and the end of the telescopic rod of the driving cylinder is provided with an inflatable bag, and when the inflatable bag is inflated and received in the cavern opening, the hot melting piece will hot melt the inflation port of the inflatable bag, and the inflated inflatable bag will be clamped in the cavern opening, and at this time, after the inflation port of the inflatable bag is hot-melted and sealed, the inflatable bag will remain in the cavern opening. Preferably, the airbag is constructed of a dense, flexible material that is not easily punctured. In addition, the hot melting piece is clamped outside the inflation inlet of the inflatable bag, the hot melting piece is provided with a heating piece, and when the situation that the hot melting piece clamps the inflation inlet of the inflatable bag is detected, the heating piece is controlled to heat so as to melt the inflation inlet of the inflatable bag through the heating piece.
In this embodiment, the sleeve 2 is annular, and further, a widening plate is extended from one side of the sleeve 2 facing the opening of the dissolving cavity to block the opening of the dissolving cavity. That is, the area of the widening plate is larger than the aperture area of the hole. Or, one side of the sleeve 2 facing the opening of the hole can be movably provided with a plurality of widening plates, the widening plates can be moved to corresponding positions according to needs, and specifically, the widening plates are in threaded connection with one side of the sleeve 2 facing the opening of the hole.
Preferably, the sleeve 2 is made of steel. The thickness of the casing 2 may be more than 15mm in particular to ensure that the casing 2 has sufficient bearing capacity; of course, the thickness of the sleeve 2 can be set to other values as required, and is not limited herein.
Specifically, steel reinforcement cage 1 includes that a plurality of intervals set up indulges muscle 3, and a plurality of muscle 3 evenly distributed about indulging. In addition, the reinforcement cage 1 further comprises a spiral rib 4, and the spiral rib 4 is arranged on the longitudinal rib 3 in a surrounding mode; preferably, the density degree of the top position of the spiral rib 4 is greater than that of the bottom position thereof, so as to improve the stability of the top position of the reinforcement cage 1.
Further, the density degree of the spiral rib 4 at the cave opening is greater than the density degree of the top position of the spiral rib 4, so as to provide the rigidity of the reinforcement cage 1 at the cave opening.
Preferably, the longitudinal ribs 3 are provided with stiffening hoops 5 to further enhance the stability of the reinforcement cage 1. Furthermore, the number of the stiffening hoops 5 is multiple, and the stiffening hoops 5 are arranged at intervals up and down.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a full sleeve bored concrete pile of solution cavity area no preliminary treatment which characterized in that includes: reinforcing bar cage and sleeve pipe, the sleeve pipe cover is located reinforcing bar cage's the outside, sheathed tube height is the same with the height of dissolving the entrance to a cave, the sleeve pipe is located the stake is downthehole and is located dissolve between bottom, the top of entrance to a cave, the downthehole concrete that has poured into of stake.
2. The full-casing bored concrete pile without pretreatment in a karst cave area according to claim 1, wherein: the sleeve pipe is sleeved on the outer side of the reinforcement cage in a welding mode, and the thickness of the sleeve pipe is larger than 15 mm.
3. The full-casing bored concrete pile without pretreatment in a karst cave area according to claim 1, wherein: and supporting steel bars are arranged at the bottom of the sleeve.
4. The full-casing bored concrete pile without pretreatment in a karst cave area according to claim 1, wherein: the sleeve is made of steel.
5. The full-casing bored concrete pile without pretreatment in a karst cave area according to claim 1, wherein: the reinforcement cage includes the vertical muscle that a plurality of intervals set up.
6. The full-casing bored concrete pile without pretreatment in a karst cave area according to claim 5, wherein: the reinforcing cage further comprises a spiral rib, and the spiral rib is arranged on the longitudinal rib in a surrounding mode.
7. The full casing bored concrete pile without pretreatment in a karst cave area according to claim 6, wherein: the density degree of the top position of the spiral rib is larger than that of the bottom position of the spiral rib.
8. The full casing bored concrete pile without pretreatment in a karst cave area according to claim 6, wherein: and the longitudinal ribs are provided with stiffening hoops.
9. The full-casing bored concrete pile without pretreatment in a karst cave area according to claim 8, wherein: the quantity of stiffening hoop is a plurality of, and is a plurality of the upper and lower interval setting of stiffening hoop.
10. The full-casing bored concrete pile without pretreatment in a karst cave area according to claim 1, wherein: still including setting up the pump outside ground and can dismantle and portable setting and be in the steel reinforcement cage or filling device outside the cover pipe, wherein filling device is provided with and is used for acceping at intraoral air bag in solution cavity, is used for driving the air bag removes to the intraoral driving piece in solution cavity and is used for the hot melt piece of air bag's inflation inlet, the air bag pass through the body with the pump intercommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210807661.XA CN115125940B (en) | 2022-07-09 | 2022-07-09 | Full-sleeve cast-in-place pile without pretreatment in karst cave area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210807661.XA CN115125940B (en) | 2022-07-09 | 2022-07-09 | Full-sleeve cast-in-place pile without pretreatment in karst cave area |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115125940A true CN115125940A (en) | 2022-09-30 |
| CN115125940B CN115125940B (en) | 2024-02-13 |
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| CN202210807661.XA Active CN115125940B (en) | 2022-07-09 | 2022-07-09 | Full-sleeve cast-in-place pile without pretreatment in karst cave area |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205046551U (en) * | 2015-09-29 | 2016-02-24 | 昆明捷程桩工有限责任公司 | Solution cavity district sleeve pipe bored concrete pile |
| CN106013049A (en) * | 2016-06-13 | 2016-10-12 | 黄泽普 | Construction method for foundation pile engineering in karst area |
| CN215482920U (en) * | 2021-05-08 | 2022-01-11 | 华恒建设集团有限公司 | Pile foundation protection device for karst area |
| CN215563862U (en) * | 2021-03-29 | 2022-01-18 | 浙江交工金筑交通建设有限公司 | Reinforcing cage structure of karst cavity district drilling bored concrete pile |
| CN114108607A (en) * | 2021-11-10 | 2022-03-01 | 中国一冶集团有限公司 | Construction method of cast-in-place pile penetrating through karst cave |
-
2022
- 2022-07-09 CN CN202210807661.XA patent/CN115125940B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205046551U (en) * | 2015-09-29 | 2016-02-24 | 昆明捷程桩工有限责任公司 | Solution cavity district sleeve pipe bored concrete pile |
| CN106013049A (en) * | 2016-06-13 | 2016-10-12 | 黄泽普 | Construction method for foundation pile engineering in karst area |
| CN215563862U (en) * | 2021-03-29 | 2022-01-18 | 浙江交工金筑交通建设有限公司 | Reinforcing cage structure of karst cavity district drilling bored concrete pile |
| CN215482920U (en) * | 2021-05-08 | 2022-01-11 | 华恒建设集团有限公司 | Pile foundation protection device for karst area |
| CN114108607A (en) * | 2021-11-10 | 2022-03-01 | 中国一冶集团有限公司 | Construction method of cast-in-place pile penetrating through karst cave |
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| Publication number | Publication date |
|---|---|
| CN115125940B (en) | 2024-02-13 |
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