CN113404044A - Hierarchical pore-forming construction method for rotary digging cast-in-place pile - Google Patents
Hierarchical pore-forming construction method for rotary digging cast-in-place pile Download PDFInfo
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- CN113404044A CN113404044A CN202110704972.9A CN202110704972A CN113404044A CN 113404044 A CN113404044 A CN 113404044A CN 202110704972 A CN202110704972 A CN 202110704972A CN 113404044 A CN113404044 A CN 113404044A
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 239000002689 soil Substances 0.000 claims abstract description 44
- 239000002893 slag Substances 0.000 claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 239000011435 rock Substances 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 239000004567 concrete Substances 0.000 claims description 18
- 239000004576 sand Substances 0.000 claims description 18
- 238000004062 sedimentation Methods 0.000 claims description 18
- 238000005086 pumping Methods 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 5
- 238000005553 drilling Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002149 hierarchical pore Substances 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/08—Removing obstacles
-
- 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
- E02D5/66—Mould-pipes or other moulds
- E02D5/68—Mould-pipes or other moulds for making bulkheads or elements thereof
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a construction method for hierarchical pore-forming of a rotary excavating cast-in-place pile, which comprises the following steps: embedding a pile casing, wherein the inner diameter of the pile casing is larger than the designed aperture of a rotary excavating cast-in-place pile hole, and the upper end surface of the pile casing is higher than the ground; taking soil in the pile casing by using a rotary excavator to form a hole, and gradually enlarging the aperture by taking soil for multiple times until the designed aperture is reached; and cleaning broken slag in the hole of the rotary excavating cast-in-place pile. The construction method for the graded hole forming of the rotary excavating filling pile can reduce the requirements on the power and the torque of a rotary excavating machine, and is beneficial to reducing the equipment cost.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a rotary excavating cast-in-place pile grading pore-forming construction method.
Background
The rotary digging cast-in-place pile is a pile which is made by that rock soil is broken through rotation of a barrel type drill bit with a valve at the bottom, the rock soil is directly loaded into a drilling bucket, then the drilling bucket is lifted out of a hole by a drilling machine lifting device and a telescopic drill rod to unload the soil, the soil is continuously taken out and unloaded in a circulating way until the drilling reaches the designed depth, and then concrete or reinforced concrete is poured. The rotary digging cast-in-place pile construction technology is a concrete technology which has the advantages of low construction cost, simple construction operation, no vibration, no noise and no soil squeezing effect, has higher safety and stronger stability, is suitable for being used in dense areas of urban buildings, and is widely applied to construction.
The construction of the traditional rotary digging cast-in-place pile is generally applied to the conventional stratum and the simple construction surrounding environment and is widely applied to foundation pit engineering. Along with the continuous emergence of super high-rise buildings, higher requirements are put forward for building foundation engineering, and the large-diameter rotary digging cast-in-place pile begins to enter into the building engineering. However, the large-diameter rotary excavating filling pile has high requirements on the rotary excavating machine, requires a large-torque and high-power rotary excavating machine, and has poor applicability and difficulty in popularization due to different torques required by different diameters and different rock strata.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a construction method for grading and forming holes of a rotary excavating cast-in-place pile, which can reduce the requirements on the power and the torque of a rotary excavator and is beneficial to reducing the equipment cost.
The construction method for the hierarchical pore-forming of the rotary excavating cast-in-place pile comprises the following steps:
embedding a pile casing, wherein the inner diameter of the pile casing is larger than the designed aperture of a rotary excavating cast-in-place pile hole, and the upper end surface of the pile casing is higher than the ground;
taking soil in the pile casing by using a rotary excavator to form a hole, and gradually enlarging the aperture by taking soil for multiple times until the designed aperture is reached;
and cleaning broken slag in the rotary excavating cast-in-place pile hole.
The construction method for the hierarchical pore-forming of the rotary excavating cast-in-place pile according to the embodiment of the invention at least has the following beneficial effects: the rotary excavator is used for soil taking and pore forming in the pile casing, soil is taken for multiple times in the pile casing, the pore diameter is gradually enlarged, the single soil taking amount of the rotary excavator is less, and the torque and the power required by the rotary excavator are smaller, so that the equipment cost can be reduced.
According to some embodiments of the invention, the casing comprises a steel casing and a reinforcing ring fixed to an outer circumferential surface of the steel casing.
According to some embodiments of the invention, two reinforcing rings are provided, and one reinforcing ring is fixed to each of two ends of the steel casing.
According to some embodiments of the invention, the pile driver is used to drive the casing into the layer of rock when the casing is embedded.
According to some embodiments of the invention, when the geotechnical layer includes a quicksand layer, the casing penetrates the quicksand layer.
According to some embodiments of the invention, the upper end surface of the casing is at least 0.3m above the ground.
According to some embodiments of the invention, when the rotary excavator is used for taking soil and forming holes in the pile casing, the rock and soil layer is cut by using the roller bit, and then the rock and soil layer is taken out by using the core bit or the slag removing bit.
According to some embodiments of the invention, when cleaning the slag in the rotary excavating cast-in-place pile hole, a pumping reverse circulation device is adopted to discharge the slag in the rotary excavating cast-in-place pile hole.
According to some embodiments of the invention, the pumping reverse circulation device comprises a guide pipe, a sand pump and a sedimentation tank, one end of the guide pipe is inserted into the rotary excavating cast-in-place pile hole, the other end of the guide pipe is communicated with an inlet of the sand pump, an outlet of the sand pump is communicated with the sedimentation tank, and the sedimentation tank is communicated with the rotary excavating cast-in-place pile hole through a mud trough.
According to some embodiments of the invention, the pumping reverse circulation device further comprises a barrier wall, the height of the barrier wall is smaller than the depth of the sedimentation tank, the barrier wall divides the sedimentation tank into a filtering tank and a mud tank, the filtering tank is communicated with the outlet of the sand pump, and the mud tank is communicated with the rotary excavating filling pile hole through the mud tank.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is a flow chart of a construction method for hierarchical hole forming of a rotary excavating cast-in-place pile according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a step-by-step hole forming method of the rotary-excavated cast-in-place pile of FIG. 1;
FIG. 3 is a front view of a pile casing in the construction method of the step-by-step hole formation of the rotary-excavated cast-in-place pile of FIG. 1;
FIG. 4 is a top view of a pile casing in the method of step-by-step hole formation of the rotary-excavated cast-in-place pile of FIG. 1;
FIG. 5 is a schematic view of a rotary excavator for soil removal in the construction method of the step-by-step hole formation of the rotary-excavated bored concrete pile shown in FIG. 1;
fig. 6 is a schematic view of a pumping reverse circulation device in the construction method for the stepped hole forming of the rotary-excavated cast-in-place pile in fig. 1.
Reference numerals: the device comprises a rock-soil layer 100, a rotary excavating cast-in-place pile hole 110, a fourth-stage hole 120, a third-stage hole 130, a second-stage hole 140, a first-stage hole 150, a mud groove 160, a pile casing 200, a reinforcing ring 210, a steel pile casing 220, a rotary excavator 300, a pumping reverse circulation device 400, a guide pipe 410, a sand pump 420, a blocking wall 430, a sedimentation tank 440, a filter tank 441 and a mud tank 442.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1 to 5, the construction method for hierarchical pore-forming of the rotary excavating cast-in-place pile according to the embodiment of the invention comprises the following steps:
s100, embedding a pile casing 200, wherein the inner diameter of the pile casing 200 is larger than the designed aperture of the rotary excavating cast-in-place pile hole 110, and the upper end face of the pile casing 200 is higher than the ground;
s200, taking soil in the pile casing 200 by using the rotary digging machine 300 to form a hole, and gradually enlarging the aperture through taking soil for multiple times until the designed aperture is reached;
s300, cleaning broken slag in the rotary excavating cast-in-place pile hole 110.
In combination with the above, the rotary excavator 300 fetches earth in the pile casing 200 to form a hole, the earth is fetched for many times in the pile casing 200, the hole diameter is gradually enlarged, the single soil fetching amount of the rotary excavator 300 is less, and the torque and the power required by the rotary excavator 300 are smaller, so that the equipment cost can be reduced.
Specifically, referring to fig. 2, the rotary excavating machine 300 can perform five times of soil borrowing, wherein the first time of soil borrowing forms a first-stage hole 150 with a diameter of 1.2m, the second time of soil borrowing forms a second-stage hole 140 with a diameter of 1.4m, the third time of soil borrowing forms a third-stage hole 130 with a diameter of 1.8m, the fourth time of soil borrowing forms a fourth-stage hole 120 with a diameter of 2.2m, and the fifth time of soil borrowing forms a rotary excavating cast-in-place pile hole 110 with a diameter of 2.5 m.
In addition, the soil taking times can be six times, seven times or other numbers, and the diameter of the hole formed after each soil taking can also be changed.
Referring to fig. 2 and 3, in some embodiments of the present invention, the casing 200 includes a reinforcement ring 210 and a steel casing 220, and the reinforcement ring 210 is fixed to an outer circumferential surface of the steel casing 220. The steel casing 220 has high strength and is not easy to deform, and the risk of necking of the rotary excavating cast-in-place pile hole 110 is reduced. In addition, by adding the reinforcing ring 210 to the outer circumferential surface of the steel casing 220, the strength of the steel casing 220 can be further improved, and the probability of deformation of the steel casing 220 can be reduced.
Furthermore, the casing 200 may also be a reinforced concrete casing.
Referring to fig. 2 and 3, in a further embodiment of the present invention, two reinforcing rings 210 are provided, and one reinforcing ring 210 is fixed to each of both ends (e.g., upper and lower ends, referring to fig. 3) of the steel casing 220. Because both ends of the opening of the steel casing 220 are easy to deform, the strength of the steel casing 220 can be effectively improved and the probability of deformation of the steel casing 220 can be reduced by adding the reinforcing rings 210 at both ends of the steel casing 220 in a targeted manner.
Referring to fig. 1, in some embodiments of the present invention, in embedding a casing 200, the casing 200 is driven into a ground layer 100 using a pile driver at step S100. The pile driver drives the pile casing 200 into the rock-soil layer 100, the efficiency is high, the time for embedding the pile casing 200 is short, and the construction time is favorably shortened.
In step S100, when the casing 200 is buried, a pit may be dug in the rock-soil layer 100, the casing 200 may be buried in the pit, and soil may be backfilled to embed the casing 200.
Referring to fig. 1, in some embodiments of the present invention, when the casing 200 is buried, the casing 200 passes through a quicksand layer when the geotechnical layer 100 includes the quicksand layer in step S100. The flowing sand layer has high fluidity, and the flowing sand can be prevented from flowing into the rotary excavating bored concrete pile hole 110 by enabling the pile casing 200 to pass through the flowing sand layer, so that smooth construction of the rotary excavating bored concrete pile hole 110 is guaranteed.
Referring to fig. 1 and 2, in some embodiments of the present invention, when the casing 200 is buried, the upper end surface of the casing 200 is at least 0.3m higher than the ground surface at step S100. The upper end of the pile casing 200 is limited to extend out of the ground, so that the probability that ground soil enters the rotary excavating bored concrete pile hole 110 is reduced, and smooth construction of the rotary excavating bored concrete pile hole 110 is guaranteed.
Specifically, the upper end surface of the casing 200 is higher than the ground by 0.3m, 0.35m, 0.4m, or other values.
Referring to fig. 5, in some embodiments of the present invention, in step S200, when the earth is excavated in the casing 200 using the rotary drilling machine 300, the rock and soil layer 100 is cut using a roller bit and then the rock and soil is extracted using a core bit or a drag bit. The roller bit can cut off the connection between rock soil and surrounding rock strata, and the core bit or the slag removing bit can take out the cut rock soil, thereby completing the operation of soil taking and hole forming.
Referring to fig. 6, in some embodiments of the present invention, in step S300, when cleaning up the slag in the rotary excavating bored concrete pile hole 110, the pumping reverse circulation device 400 is used to discharge the slag in the rotary excavating bored concrete pile hole 110. The pumping reverse circulation device 400 can continuously and circularly suck out the crushed slag in the rotary digging cast-in-place pile hole 110 and leave the crushed slag outside, so that the rotary digging cast-in-place pile hole 110 is cleaned. The pumping reverse circulation device 400 has good cleaning effect and high cleaning efficiency, and is beneficial to improving the construction speed of the rotary excavating cast-in-place pile hole 110.
Referring to fig. 6, it should be noted that the arrows in fig. 6 indicate the flow direction of the slurry. In a further embodiment of the present invention, the pumping reverse circulation device 400 comprises a conduit 410, a sand pump 420 and a sedimentation tank 440, wherein one end of the conduit 410 is inserted into the rotary excavating bored concrete pile hole 110, the other end of the conduit 410 is communicated with an inlet of the sand pump 420, an outlet of the sand pump 420 is communicated with the sedimentation tank 440, and the sedimentation tank 440 is communicated with the rotary excavating bored concrete pile hole 110 through the mud trough 160.
Therefore, after the sand pump 420 is electrified, negative pressure is generated in the conduit 410, and slurry mixed with rocks in the rotary excavating bored concrete pile hole 110 flows into the conduit 410 and flows into the sedimentation tank 440 through the sand pump 420 under the action of atmospheric pressure. After the rocks are left in the sedimentation basin 440, the residual slurry continues to enter the rotary excavating bored concrete pile hole 110, and the residual rocks are taken out.
Referring to fig. 6, in a further embodiment of the present invention, the pumping reverse circulation device 400 further comprises a blocking wall 430, the height of the blocking wall 430 is smaller than the depth of the sedimentation tank 440, the blocking wall 430 divides the sedimentation tank 440 into a filtering tank 441 and a mud tank 442, the filtering tank 441 is communicated with the outlet of the sand pump 420, and the mud tank 442 is communicated with the rotary excavating bored concrete pile hole 110 through the mud tank 160.
By arranging the blocking wall 430, rocks in the slurry can be filtered, the rocks are left in the filtering tank 441, the rocks are prevented from flowing into the rotary excavating bored concrete pile hole 110 again, and therefore the cleaning effect of the pumping reverse circulation device 400 can be improved.
In summary, the construction method for hierarchical pore forming of the rotary excavating cast-in-place pile provided by the embodiment of the invention has the following technical effects:
(1) the reinforcing ring 210 is added to the large-diameter steel casing 220, the casing burial depth is reasonably designed according to actual geological conditions, and risks such as casing deformation and pile hole necking can be better avoided;
(2) the large-diameter rock core is directly taken out through one-time pore forming, the torsional force is large, the rotary excavating machine is easy to incline in places with poor geology, the overturning risk is caused, and the construction safety is relatively unfavorable; compared with the traditional one-time pore-forming method, the method adopts a graded pore-forming mode, has better economic benefit and higher practicability, and is safer in construction;
(3) the construction efficiency is improved, and the equipment investment can be reduced by the fractional pore-forming method under the requirements of the same workload and the same construction period, so that the economic benefit is improved;
(4) the hole collapse risk is reduced, the hole wall exposure time is shortened greatly in the construction process of the fractional hole forming method, and the hole collapse risk is reduced to the maximum extent.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. The construction method for hierarchical pore-forming of the rotary excavating cast-in-place pile is characterized by comprising the following steps:
embedding a pile casing, wherein the inner diameter of the pile casing is larger than the designed aperture of a rotary excavating cast-in-place pile hole, and the upper end surface of the pile casing is higher than the ground;
taking soil in the pile casing by using a rotary excavator to form a hole, and gradually enlarging the aperture by taking soil for multiple times until the designed aperture is reached;
and cleaning broken slag in the rotary excavating cast-in-place pile hole.
2. The construction method for hierarchical pore-forming of the rotary excavating cast-in-place pile according to claim 1, wherein the pile casing comprises a steel pile casing and a reinforcing ring, and the reinforcing ring is fixed on the outer peripheral surface of the steel pile casing.
3. The construction method for hierarchical pore-forming of the rotary excavating cast-in-place pile according to claim 2, wherein two reinforcing rings are arranged, and one reinforcing ring is fixed to each of two ends of the steel casing.
4. The rotary excavating bored concrete pile graded hole forming construction method according to any one of claims 1 to 3, wherein the pile casing is driven into a rock-soil layer by a pile driver when the pile casing is buried.
5. The rotary excavating bored concrete pile graded hole forming construction method according to any one of claims 1 to 3, wherein when a rock and soil layer includes a quicksand layer, the pile casing penetrates through the quicksand layer.
6. The construction method for hierarchical pore-forming of the rotary excavating cast-in-place pile according to any one of claims 1 to 3, wherein the upper end surface of the pile casing is at least 0.3m higher than the ground.
7. The construction method for grading the hole formation of the rotary excavating bored concrete pile according to any one of claims 1 to 3, wherein when the rotary excavating machine is used for taking out soil and forming the hole in the pile casing, a rock and soil layer is cut by using a roller bit, and then the rock and soil is taken out by using a core bit or a slag removing bit.
8. The construction method for grading pore-forming of the rotary excavating cast-in-place pile according to any one of claims 1 to 3, wherein when slag in the hole of the rotary excavating cast-in-place pile is cleaned, a pumping reverse circulation device is adopted to discharge the slag in the hole of the rotary excavating cast-in-place pile.
9. The construction method for graded hole forming of the rotary excavating filling pile according to claim 8, wherein the pumping reverse circulation device comprises a guide pipe, a sand pump and a sedimentation tank, one end of the guide pipe is inserted into the rotary excavating filling pile hole, the other end of the guide pipe is communicated with an inlet of the sand pump, an outlet of the sand pump is communicated with the sedimentation tank, and the sedimentation tank is communicated with the rotary excavating filling pile hole through a mud trough.
10. The construction method for graded hole forming of the rotary excavating cast-in-place pile according to claim 9, wherein the pump suction reverse circulation device further comprises a barrier wall, the height of the barrier wall is smaller than the depth of the sedimentation tank, the barrier wall divides the sedimentation tank into a filtering tank and a mud tank, the filtering tank is communicated with the outlet of the sand pump, and the mud tank is communicated with the rotary excavating cast-in-place pile hole through the mud tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110704972.9A CN113404044A (en) | 2021-06-24 | 2021-06-24 | Hierarchical pore-forming construction method for rotary digging cast-in-place pile |
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| CN202110704972.9A CN113404044A (en) | 2021-06-24 | 2021-06-24 | Hierarchical pore-forming construction method for rotary digging cast-in-place pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753361A (en) * | 2022-04-29 | 2022-07-15 | 深圳市交通公用设施建设中心 | Pile foundation steel casing capable of controlling stratum deformation and construction method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005097853A (en) * | 2003-09-22 | 2005-04-14 | ▲高▼嶋建設工事株式会社 | Excavator with vertically movable rotary table, steel pipe pile driving method based on double-pipe system, and excavation method for construction of foundation pile |
| CN101270577A (en) * | 2008-03-04 | 2008-09-24 | 中国建筑第六工程局有限公司 | Construction method for large-diameter ultra-deep rock borehole bottom-expanding filling pile |
| CN102995631A (en) * | 2011-09-09 | 2013-03-27 | 五冶集团上海有限公司 | Trepanning pore-forming construction method of cast-in-place pile |
| CN103924586A (en) * | 2014-03-18 | 2014-07-16 | 沈保汉 | Multi-section reaming cast-in-place pile construction method |
| CN112012658A (en) * | 2020-04-17 | 2020-12-01 | 中铁八局集团有限公司 | Ultra-deep large-diameter bored pile hole forming method |
| CN112709529A (en) * | 2020-12-28 | 2021-04-27 | 中铁十局集团第七工程有限公司 | Radial grading pore-forming construction method and application of hard rock layer drilled pile |
-
2021
- 2021-06-24 CN CN202110704972.9A patent/CN113404044A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005097853A (en) * | 2003-09-22 | 2005-04-14 | ▲高▼嶋建設工事株式会社 | Excavator with vertically movable rotary table, steel pipe pile driving method based on double-pipe system, and excavation method for construction of foundation pile |
| CN101270577A (en) * | 2008-03-04 | 2008-09-24 | 中国建筑第六工程局有限公司 | Construction method for large-diameter ultra-deep rock borehole bottom-expanding filling pile |
| CN102995631A (en) * | 2011-09-09 | 2013-03-27 | 五冶集团上海有限公司 | Trepanning pore-forming construction method of cast-in-place pile |
| CN103924586A (en) * | 2014-03-18 | 2014-07-16 | 沈保汉 | Multi-section reaming cast-in-place pile construction method |
| CN112012658A (en) * | 2020-04-17 | 2020-12-01 | 中铁八局集团有限公司 | Ultra-deep large-diameter bored pile hole forming method |
| CN112709529A (en) * | 2020-12-28 | 2021-04-27 | 中铁十局集团第七工程有限公司 | Radial grading pore-forming construction method and application of hard rock layer drilled pile |
Non-Patent Citations (2)
| Title |
|---|
| 常建立等: "《建筑工程施工技术 上》", 31 August 2016 * |
| 方洪涛等: "《高层建筑施工》", 31 January 2019 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753361A (en) * | 2022-04-29 | 2022-07-15 | 深圳市交通公用设施建设中心 | Pile foundation steel casing capable of controlling stratum deformation and construction method thereof |
| CN114753361B (en) * | 2022-04-29 | 2024-04-30 | 深圳市交通公用设施建设中心 | Pile foundation steel pile casing capable of controlling stratum deformation and construction method thereof |
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Inventor after: Huang Jianyong Inventor after: Wen Shaotong Inventor after: Liu Huixi Inventor after: Zhao Hengyang Inventor after: Che Mingsheng Inventor after: Wang Haoyu Inventor after: Chen Jianlin Inventor after: Li Jichao Inventor after: Ma Peixuan Inventor after: Yu Xiaoyi Inventor before: Huang Jianyong Inventor before: Zhao Hengyang Inventor before: Che Mingsheng Inventor before: Wang Haoyu Inventor before: Chen Jianlin Inventor before: Wang Gang Inventor before: Ma Peixuan Inventor before: Yu Xiaoyi Inventor before: Wen Shaotong |
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