CN116516957A - Construction method of detachable soft foundation area pile foundation steel casing - Google Patents
Construction method of detachable soft foundation area pile foundation steel casing Download PDFInfo
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- CN116516957A CN116516957A CN202310809061.1A CN202310809061A CN116516957A CN 116516957 A CN116516957 A CN 116516957A CN 202310809061 A CN202310809061 A CN 202310809061A CN 116516957 A CN116516957 A CN 116516957A
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- steel
- casing
- steel casing
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 193
- 239000010959 steel Substances 0.000 title claims abstract description 193
- 238000010276 construction Methods 0.000 title claims abstract description 55
- 239000004567 concrete Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D11/00—Methods or apparatus specially adapted for both placing and removing sheet pile bulkheads, piles, or mould-pipes
-
- 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 detachable soft foundation area pile foundation steel casing construction method, and belongs to the technical field of building engineering construction. According to the method, a limiting block with a first mounting hole is fixedly arranged at the lower section part of the steel casing, the top end of the lower section part of the steel casing is provided with a first mounting hole Gao Yugang, a second mounting hole is formed in the corresponding position of the upper section part of the steel casing, a fastening piece is matched with the first mounting hole and the second mounting hole to fix the upper section part of the steel casing and the lower section part of the steel casing, when the steel casing sinks into a weak foundation to enable the fastening piece to be at a set height from the ground, the fastening piece is detached, and the upper section part of the steel casing is abutted against the lower section part of the steel casing and limited by the limiting block; and the steel pile casing continues to sink into the weak foundation, and after the concrete is poured to reach the preset strength, the lifting equipment pulls out the upper section part of the steel pile casing. The construction method of the detachable soft foundation area pile foundation steel casing can remove the connecting pieces between the steel casings before concrete pouring and ensure that the positions between the steel casings are not deviated.
Description
Technical Field
The invention belongs to the technical field of construction engineering, and particularly relates to a detachable soft foundation area pile foundation steel casing construction method.
Background
When the bored pile is constructed under the weak geological condition, because the soil property is unstable, the construction reinforced concrete retaining wall has great difficulty, so the steel retaining cylinder is adopted to protect the bored pile, the construction progress and safety are prevented from being influenced by hole collapse, the steel retaining cylinder which is usually used for the construction of the bored pile is an integral cylinder made of steel, a part of the lower end of the steel retaining cylinder is driven into a pile foundation position before the construction of the pile foundation, pile foundation concrete is poured, the steel retaining cylinder and the pile foundation concrete are connected into a whole after the pouring is finished, the steel retaining cylinder cannot be removed, the steel retaining cylinder becomes a permanent structure of the pile foundation, a large amount of steel is wasted, and the construction cost is increased.
Chinese patent 201810894824.6 discloses a removable pile casing and a method for construction of a cast-in-place pile in a water area, wherein the removable pile casing is inserted and beaten to a preset position, a top flange piece is arranged at the top of the removable pile casing and is locked with the removable pile casing by a flange locking device, and a pull rod of the barrel piece locking device, a pull rod of the flange locking device and a pull rope are arranged on a pull rod bracket and a pull rod bracket of a barrel body. And (3) driving the locked non-removable pile casing and the removable pile casing downwards to a preset depth, and carrying out concrete pouring construction after the pile casings are all installed. After the concrete pouring is completed and the strength is reached, a lifting wire rope is used for tying the lifting lug of each arc-shaped barrel piece of the uppermost section of the common protection barrel; rotating a rotating rod of the flange locking device to enable the lock shaft to rotate to an open state, wherein the detachable protective cylinder and the non-detachable protective cylinder are in a detachable state; pulling up a pull rod of the barrel piece locking device to enable the lock shaft to rotate to an open state, wherein all barrel pieces of the removable protective barrel are in a separable state; the hoisting steel wire rope is tightened, and each barrel piece of the removable protective barrel is lifted off the water body and is transferred to a preset place; realize the disassembly and the reuse of the steel casing.
The Chinese patent 201821243442.9 discloses a detachable steel pile casing for construction of a pile foundation in water, two steel half cylinders with semicircular cross sections extend outwards along the diameter direction from two sides of each half cylinder to form a butt joint edge, the two half cylinders are buckled relatively to form the circular steel pile casing, buckles for fastening the two butt joint edges are respectively arranged on the two opposite butt joint edges on two sides of the two half cylinders, each buckle comprises two clamping plates which are arranged oppositely, the two clamping plates are clamped on the outer sides of the two butt joint edges, and the two clamping plates are connected and fastened through buckle bolts and clamp the two butt joint edges; the U-shaped pull ring is arranged on the clip, and two ends of the pull ring are respectively welded with the outer sides of the two clamping plates. After the concrete pouring is completed, the buckle is disassembled, the two half cylinders are respectively pulled outwards to separate the two half cylinders from the concrete, and then the two half cylinders are pulled upwards, so that the steel casing can be disassembled and recycled.
However, the construction method of the detachable steel casing disclosed above adopts the cylinder body formed by enclosing the steel casing with the arc-shaped cylinder sheets, so that the combined installation work is complicated during use, and when the steel casing is detached, the connection piece between the steel casings is detached only after the concrete pouring is completed and the preset strength is reached, so that the difficulty is high.
Therefore, a detachable soft foundation area pile foundation steel pile casing construction method is needed, a complete cylinder body is adopted as a component part of the steel pile casing, so that the combined installation work is simple to improve the working efficiency, connectors between the steel pile casings are removed before concrete pouring, and the positions between the steel pile casings are guaranteed not to deviate.
Disclosure of Invention
Aiming at the defects existing in the related art, the invention aims to provide a detachable soft foundation area pile foundation steel casing construction method so as to solve the problems in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the construction method of the detachable soft foundation area pile foundation steel pile casing comprises the following steps that the steel pile casing comprises an upper section part and a lower section part which are detachably connected, and the upper section part and the lower section part of the steel pile casing are hollow cylinders:
s1, fixing a limiting block provided with a first mounting hole on the outer wall of a lower section part of a steel casing, wherein the fixing position of the limiting block is close to the top end of the lower section part of the steel casing, and fixing the top end of the lower section part of the steel casing of the first mounting hole Gao Yugang on the limiting block;
s2, abutting the upper section part of the steel casing with the lower section part of the steel casing, marking the corresponding position of the first mounting hole on the upper section part of the steel casing, then taking down the upper section part of the steel casing and opening a second mounting hole at the marked position;
s3, butting the upper section part of the steel casing with the lower section part of the steel casing, and fixing the upper section part of the steel casing with the lower section part of the steel casing by using a fastener to match with the first mounting hole and the second mounting hole;
s4, after the construction preparation work of the steel pile casing is completed, sinking the steel pile casing part into a weak foundation by using lifting equipment in combination with a vibrating pile hammer, dismantling the fastening piece when the fastening piece is at a set height from the ground, and abutting the upper section part of the steel pile casing with the lower section part of the steel pile casing and limiting by a limiting block;
s5, the hoisting equipment is matched with the vibrating pile hammer to continuously sink the steel pile casing into a weak foundation, the standard required height is reserved, a pile foundation reinforcement cage is installed in the steel pile casing, and concrete is poured;
and S6, after the concrete reaches the preset strength, the upper section of the steel casing is pulled out by hoisting equipment.
In some of these embodiments, the fastener comprises a bolt and a nut, and in step S2, the nut is welded to the inner wall of the upper section of the steel casing, the welding position being adapted to the position where the second mounting hole is provided.
In some of these embodiments, in step S4, the bolts are removed and the nuts remain secured to the inner wall of the upper section of the steel casing.
In some of these embodiments, the bolt is a high strength bolt and the nut is a high strength nut.
In some of these embodiments, in step S1, a plurality of stoppers are fixed on the outer wall of the lower section of the steel casing, and the plurality of stoppers are distributed circumferentially along the lower section of the steel casing.
In some embodiments, in step S1, the outer wall of the lower section of the steel casing is fixed to the stopper by full-welded connection.
In some of these embodiments, a hanging ring is provided on top of the steel casing upper section, and a hanging rope is threaded on the hanging ring, and in step S6, the hoisting device is connected with the steel casing upper section through the hanging rope.
Compared with the prior art, the invention has the beneficial effects that:
1. the construction method of the detachable soft foundation pile foundation steel pile casing provided by the invention can remove the fasteners connecting the upper section part of the steel pile casing and the lower section part of the steel pile casing before the steel pile casing is totally sunk into a soft foundation, and ensure that the positions between the upper section part of the steel pile casing and the lower section part of the steel pile casing are not deviated.
2. According to the detachable soft foundation pile foundation steel casing construction method provided by the invention, the detached steel casing upper section part can be used for subsequent pile foundation construction, cyclic utilization is realized, and construction investment is greatly saved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic view of a steel casing structure of one embodiment of a removable soft foundation area pile foundation steel casing construction method of the present invention;
FIG. 2 is a schematic construction diagram of step S1 in one embodiment of the detachable soft foundation area pile foundation steel casing construction method of the present invention;
FIG. 3 is a schematic construction diagram of step S2 in one embodiment of the detachable soft foundation area pile foundation steel casing construction method of the present invention;
FIG. 4 is a schematic construction diagram of step S3 in one embodiment of the detachable soft foundation area pile foundation steel casing construction method of the present invention;
FIG. 5 is a schematic construction diagram of step S4 in one embodiment of the removable soft foundation pile foundation steel casing construction method of the present invention;
FIG. 6 is a schematic view of the construction of a steel casing of a detachable soft foundation area pile foundation in one embodiment of the method of the present invention, wherein the steel casing is sunk into a soft foundation at step S5;
FIG. 7 is a schematic view of the construction of a removable soft foundation pile foundation steel casing according to one embodiment of the present invention, wherein step S5 is a construction process for installing a pile foundation reinforcement cage and casting concrete;
FIG. 8 is a schematic construction diagram of step S6 in one embodiment of the detachable soft foundation area pile foundation steel casing construction method of the present invention.
In the figure:
1. a steel pile casing; 11. an upper section of the steel casing; 12. a lower section of the steel casing; 2. a limiting block; 3. a fastener; 31. a bolt; 32. a nut; 4. a first mounting hole; 5. a second mounting hole; 6. a hanging ring; 61. a hanging rope; 7. a weak foundation.
Detailed Description
The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-8, an exemplary embodiment of the removable soft foundation pile foundation steel casing construction method of the present invention is shown for removing fasteners 3 connecting steel casing upper section 11 and steel casing lower section 12 and ensuring that there is no misalignment between the positions of steel casing upper section 11 and steel casing lower section 12 before steel casing 1 is fully submerged in soft foundation 7. The steel pile casing 1 comprises a steel pile casing upper section part 11 and a steel pile casing lower section part 12 which are detachably connected, the steel pile casing upper section part 11 and the steel pile casing lower section part 12 are hollow cylinders, and the detachable soft foundation area pile foundation steel pile casing construction method comprises the following steps:
s1, fixing a limiting block 2 provided with a first mounting hole 4 on the outer wall of a lower section 12 of the steel casing, wherein the fixing position of the limiting block 2 is close to the top end of the lower section 12 of the steel casing, and the first mounting hole 4 on the limiting block 2 after fixing is higher than the top end of the lower section 12 of the steel casing;
s2, butting the steel casing upper section part 11 with the steel casing lower section part 12, marking the corresponding position of the steel casing upper section part 11 with a first mounting hole 4, then taking down the steel casing upper section part 11 and opening a second mounting hole 5 at the marked position;
s3, abutting the steel casing upper section part 11 with the steel casing lower section part 12, and fixing the steel casing upper section part 11 with the steel casing lower section part 12 by using the fastener 3 to match the first mounting hole 4 and the second mounting hole 5;
s4, after the steel pile casing construction preparation work is completed, the hoisting equipment is matched with the vibrating pile hammer to sink the steel pile casing 1 into the weak foundation 7, the fastening piece 3 is detached after the fastening piece 3 is set to be at a height from the ground, and the steel pile casing upper section 11 is abutted with the steel pile casing lower section 12 and limited by the limiting block 2;
s5, the hoisting equipment is matched with a vibrating pile hammer to continuously sink the steel pile casing 1 into the weak foundation 7, the standard required height is reserved, a pile foundation reinforcement cage is installed in the steel pile casing 1, and concrete is poured;
and S6, after the concrete reaches the preset strength, the steel casing upper section part 11 is pulled out by lifting equipment.
In order to facilitate the assembly and disassembly of the steel casing upper section 11 and the steel casing lower section 12, the fastener 3 selects a bolt 31 and a nut 32, in step S2, the nut 32 is welded to the inner wall of the steel casing upper section 11, the welding position is adapted to the position where the second mounting hole 5 is formed, the welded nut 32 is only connected to the steel casing upper section 11, the nut 32 does not extend to the first mounting hole 4 or the second mounting hole 5, and in step S3, after the steel casing upper section 11 is butted with the steel casing lower section 12, the first mounting hole 4 is communicated with the second mounting hole 5, so that the bolt 31 can pass through the first mounting hole 4 and the second mounting hole 5 to cooperate with the nut 32 to fix the steel casing upper section 11 with the steel casing lower section 12. In step S4, the bolt 31 is removed, the nut 32 is still fixed on the inner wall of the steel casing upper section 11, at this time, the steel casing upper section 11 abuts against the steel casing lower section 12 and is limited only by the stopper 2, and the steel casing upper section 11 and the steel casing lower section 12 are no longer fixed by the bolt 31 and the nut 32. The welding position of the nut 32 may also be selected within the second mounting hole 5, and the size of the nut 32 may be matched to the size of the second mounting hole 5 to avoid the nut 32 being oversized beyond the second mounting hole 5 to affect the removal of the upper section 11 of the steel casing. In addition, the bolt 31 is a high-strength bolt, and the nut 32 is a high-strength nut, so that the stress performance of the bolt 31 and the nut 32 is improved. In order to simplify the construction step, in step S2, the second mounting hole 5 provided at the marked position of the upper section 11 of the steel casing is provided with threads, the threads are matched with the bolts 31, and the threads in the second mounting hole 5 are matched with the bolts 31 without welding nuts 32, so that the functions of fixing the upper section 11 of the steel casing and the lower section 12 of the steel casing can be realized.
In order to enable the limiting blocks 2 to achieve a better limiting function on the upper section 11 of the steel casing and save construction investment as much as possible, in step S1, four limiting blocks 2 are fixed on the outer wall of the lower section 12 of the steel casing, and the four limiting blocks 2 are equidistantly arranged along the circumferential direction of the lower section 12 of the steel casing.
In order to firmly connect the lower section 12 of the steel casing with the limiting block 2 and avoid breakage during hoisting of the steel casing 1, in step S1, the outer wall of the lower section 12 of the steel casing is fixedly connected with the limiting block 2 in a full-welded mode.
In step S6, the steel casing upper section 11 may be removed continuously by using the lifting device in combination with the vibratory pile hammer, in order to improve the removal efficiency of the steel casing upper section 11, the lifting ring 6 is welded on top of the steel casing upper section 11, and the lifting rope 61 is threaded on the lifting ring 6, and in step S6, the lifting device is connected with the steel casing upper section 11 through the lifting rope 61. The lifting rings 6 are equally spaced circumferentially along the upper section 11 of the steel casing to maintain balance when the upper section 11 of the steel casing is removed.
In the above-mentioned exemplary embodiments, the removable soft foundation area pile foundation steel pile casing construction method is applied to the construction of cast-in-place piles under weak geological conditions, and the steel pile casing protects the hole pile, prevents the hole collapse from affecting the construction progress and safety. The construction method can remove the fasteners connecting the upper section part of the steel pile casing and the lower section part of the steel pile casing before the steel pile casing is totally sunk into the soft foundation, ensure that the positions between the upper section part of the steel pile casing and the lower section part of the steel pile casing are not deviated, reduce steel waste, save construction cost, reduce construction difficulty and improve construction efficiency.
Finally, it should be noted that: in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (7)
1. The utility model provides a removable soft foundation district pile foundation steel pile casing construction method, steel pile casing includes the steel pile casing upper segment part and the steel pile casing lower segment part of detachable connection, and steel pile casing upper segment part and steel pile casing lower segment part are hollow cylinder, and its characterized in that, construction method includes following steps:
s1, fixing a limiting block provided with a first mounting hole on the outer wall of a lower section part of a steel casing, wherein the fixing position of the limiting block is close to the top end of the lower section part of the steel casing, and fixing the top end of the lower section part of the steel casing of the first mounting hole Gao Yugang on the limiting block;
s2, abutting the upper section part of the steel casing with the lower section part of the steel casing, marking the corresponding position of the first mounting hole on the upper section part of the steel casing, then taking down the upper section part of the steel casing and opening a second mounting hole at the marked position;
s3, butting the upper section part of the steel casing with the lower section part of the steel casing, and fixing the upper section part of the steel casing with the lower section part of the steel casing by using a fastener to match with the first mounting hole and the second mounting hole;
s4, after the construction preparation work of the steel pile casing is completed, sinking the steel pile casing part into a weak foundation by using lifting equipment in combination with a vibrating pile hammer, dismantling the fastening piece when the fastening piece is at a set height from the ground, and abutting the upper section part of the steel pile casing with the lower section part of the steel pile casing and limiting by a limiting block;
s5, the hoisting equipment is matched with the vibrating pile hammer to continuously sink the steel pile casing into a weak foundation, the standard required height is reserved, a pile foundation reinforcement cage is installed in the steel pile casing, and concrete is poured;
and S6, after the concrete reaches the preset strength, the upper section of the steel casing is pulled out by hoisting equipment.
2. The method of constructing a removable soft foundation pile foundation steel casing according to claim 1, wherein the fastener comprises a bolt and a nut, and the nut is welded to the inner wall of the upper section of the steel casing in step S2, the welding position being adapted to the position where the second mounting hole is formed.
3. The method of constructing a removable soft foundation pile foundation steel casing according to claim 2, wherein in step S4 the bolts are removed and the nuts remain secured to the inner wall of the upper section of the steel casing.
4. A method of constructing a removable soft foundation pile foundation steel casing according to claim 3, wherein the bolt is a high strength bolt and the nut is a high strength nut.
5. The method for constructing the detachable soft foundation pile foundation steel casing according to claim 1, wherein in the step S1, a plurality of limiting blocks are fixed on the outer wall of the lower section of the steel casing, and the plurality of limiting blocks are circumferentially distributed along the lower section of the steel casing.
6. The construction method of the detachable soft foundation pile foundation steel casing according to claim 5, wherein in the step S1, the outer wall of the lower section of the steel casing is fixed with the limiting block in a full-welded mode.
7. The construction method of the detachable soft foundation area pile foundation steel casing according to claim 1, wherein a hanging ring is arranged at the top of the upper section part of the steel casing, a hanging rope is arranged on the hanging ring in a penetrating mode, and in the step S6, the lifting equipment is connected with the upper section part of the steel casing through the hanging rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310809061.1A CN116516957A (en) | 2023-07-04 | 2023-07-04 | Construction method of detachable soft foundation area pile foundation steel casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310809061.1A CN116516957A (en) | 2023-07-04 | 2023-07-04 | Construction method of detachable soft foundation area pile foundation steel casing |
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| Publication Number | Publication Date |
|---|---|
| CN116516957A true CN116516957A (en) | 2023-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310809061.1A Pending CN116516957A (en) | 2023-07-04 | 2023-07-04 | Construction method of detachable soft foundation area pile foundation steel casing |
Country Status (1)
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| CN (1) | CN116516957A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108797581A (en) * | 2018-08-07 | 2018-11-13 | 中国十七冶集团有限公司 | A kind of bridge pile foundation churning driven construction assembled steel pile casting structure and its installation method |
| CN110387880A (en) * | 2019-07-29 | 2019-10-29 | 中铁十二局集团建筑安装工程有限公司 | A kind of bored pile construction method |
| CN209703494U (en) * | 2019-02-26 | 2019-11-29 | 山西建筑工程集团有限公司 | The reusable device of deep basal pit people's air defense steel pile casting |
| JP2020193534A (en) * | 2019-05-30 | 2020-12-03 | 株式会社設計室ソイル | Removal method of steel pipe pile |
| CN113605383A (en) * | 2021-07-26 | 2021-11-05 | 天津深基工程有限公司 | A steel protects a section of thick bamboo is transferred in merogenesis for bored concrete pile construction |
| CN113863296A (en) * | 2021-08-24 | 2021-12-31 | 中国水利水电第十四工程局有限公司 | Separable recovery steel protects a section of thick bamboo and control system |
| CN216551915U (en) * | 2022-01-06 | 2022-05-17 | 中国瑞林工程技术股份有限公司东莞分公司 | Steel casing capable of separating cast-in-place pile from top to bottom |
-
2023
- 2023-07-04 CN CN202310809061.1A patent/CN116516957A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108797581A (en) * | 2018-08-07 | 2018-11-13 | 中国十七冶集团有限公司 | A kind of bridge pile foundation churning driven construction assembled steel pile casting structure and its installation method |
| CN209703494U (en) * | 2019-02-26 | 2019-11-29 | 山西建筑工程集团有限公司 | The reusable device of deep basal pit people's air defense steel pile casting |
| JP2020193534A (en) * | 2019-05-30 | 2020-12-03 | 株式会社設計室ソイル | Removal method of steel pipe pile |
| CN110387880A (en) * | 2019-07-29 | 2019-10-29 | 中铁十二局集团建筑安装工程有限公司 | A kind of bored pile construction method |
| CN113605383A (en) * | 2021-07-26 | 2021-11-05 | 天津深基工程有限公司 | A steel protects a section of thick bamboo is transferred in merogenesis for bored concrete pile construction |
| CN113863296A (en) * | 2021-08-24 | 2021-12-31 | 中国水利水电第十四工程局有限公司 | Separable recovery steel protects a section of thick bamboo and control system |
| CN216551915U (en) * | 2022-01-06 | 2022-05-17 | 中国瑞林工程技术股份有限公司东莞分公司 | Steel casing capable of separating cast-in-place pile from top to bottom |
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Application publication date: 20230801 |