CN110644472A - Steel pipe pile assembly, foundation pit support structure and construction method thereof - Google Patents
Steel pipe pile assembly, foundation pit support structure and construction method thereof Download PDFInfo
- Publication number
- CN110644472A CN110644472A CN201910902656.5A CN201910902656A CN110644472A CN 110644472 A CN110644472 A CN 110644472A CN 201910902656 A CN201910902656 A CN 201910902656A CN 110644472 A CN110644472 A CN 110644472A
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- pipe pile
- pile assembly
- piles
- locking
- Prior art date
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 143
- 239000010959 steel Substances 0.000 title claims abstract description 143
- 238000010276 construction Methods 0.000 title claims abstract description 37
- 238000007789 sealing Methods 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 13
- 239000002689 soil Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 230000003487 anti-permeability effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000026676 system process Effects 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
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
-
- 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 provides a steel pipe pile assembly and a foundation pit support structure, wherein the steel pipe pile assembly comprises: at least two steel pipe piles arranged in parallel and a locking notch pair matched with the steel pipe piles; wherein, two locking notches in each locking notch pair are arranged in axial symmetry relative to the steel pipe pile matched with the locking notches; the locking notches on two adjacent steel pipe piles are mutually occluded and sealed, so that the two steel pipe piles are integrated and the gap between the two steel pipe piles is sealed. The steel pipe pile assembly is adopted for foundation pit enclosure, so that an integral steel pipe pile enclosure system integrating soil retaining and anti-permeability performance is formed, and the steel pipe pile assembly is based on good performances of high strength, high rigidity and high stability; in the pile sinking process, the thin wall of the steel pipe pile is driven, the soil squeezing effect is not obvious, and the construction process is simple and the construction efficiency is high; the construction of accessible fore shaft overlap joint between the steel-pipe pile need not to arrange the stagnant water curtain outside the hole, has reduced the production of construction noise and building rubbish, accords with the theory of green construction.
Description
Technical Field
The invention relates to the technical field of enclosure system construction, in particular to a steel pipe pile assembly, a foundation pit enclosure structure and a construction method of the foundation pit enclosure structure.
Background
At present, the deep foundation pit support structure design mostly adopts a traditional support system, and the main support system comprises the following two types: 1) the construction process of the cast-in-situ bored pile and waterproof curtain enclosure system is developed well, but the slurry treatment has certain problems and also has the quality hidden troubles of hole expansion, pile position deviation and the like; 2) the steel pipe pile and the waterproof curtain enclosure system have the advantages that the steel pipe pile has the advantages of thin wall driving and unobvious soil squeezing effect, but the steel pipe pile essentially still belongs to a separated row pile enclosure structure, and the waterproof curtain needs to be arranged outside a pit.
Therefore, how to keep the advantages of the traditional enclosure system process and make up for the defects is of great significance to improve the deep foundation pit enclosure structure.
Disclosure of Invention
The invention aims to provide a steel pipe pile assembly, a foundation pit support structure and a construction method thereof, so as to make up for the defects of a foundation pit support system in the traditional process.
In order to solve the above technical problems, the present invention provides a steel pipe pile assembly, including: at least two steel pipe piles arranged in parallel and a locking notch pair matched with the steel pipe piles; wherein, two locking notches in each locking notch pair are arranged in axial symmetry relative to the steel pipe pile matched with the locking notches; the locking notches on two adjacent steel pipe piles are mutually occluded and sealed, so that the two steel pipe piles are integrated and the gap between the two steel pipe piles is sealed.
Optionally, in the steel pipe pile assembly, the locking notches in the locking notch pairs are all hot-rolled sleeve type locking notches.
Optionally, in the steel pipe pile assembly, the manner of sealing in the mutual engagement sealing of the locking notches of the two adjacent steel pipe piles is as follows: and sealing the overlapped part of the mutually occluded locking notches by adopting a full-length welding line.
Optionally, in the steel pipe pile assembly, the steel pipe pile is made of Q345B, and the wall thickness of the steel pipe pile is 12mm to 16 mm.
Optionally, in the steel pipe pile assembly, the outer diameter of the steel pipe pile is 700mm to 800 mm.
Optionally, the steel pipe pile assembly includes: the steel pipe piles are arranged in parallel, and a reinforcing ring plate is arranged at the top of the steel pipe pile in the middle.
Optionally, in the steel pipe pile assembly, the thickness of the reinforcing ring plate is 14 mm.
Optionally, the steel pipe pile assembly further includes lifting lugs, and the lifting lugs are arranged on two sides of the reinforcing ring plate.
The invention also provides a foundation pit support structure, which comprises: a plurality of steel pipe pile assemblies as described above.
The invention also provides a construction method of the foundation pit enclosure structure, which comprises the following steps:
transporting the prefabricated steel pipe pile assembly to a construction site;
the following steps are carried out on each side of the foundation pit:
when the steel pipe pile assembly is lifted to be in place, arranging a guide frame at a designed pile position to control the pile sinking verticality of the steel pipe pile assembly;
and performing pile sinking construction on the steel pipe pile assembly.
In the steel pipe pile assembly, the foundation pit support structure and the construction method thereof provided by the invention, the steel pipe pile assembly comprises: at least two steel pipe piles arranged in parallel and a locking notch pair matched with the steel pipe piles; wherein, two locking notches in each locking notch pair are arranged in axial symmetry relative to the steel pipe pile matched with the locking notches; the locking notches on two adjacent steel pipe piles are mutually occluded and sealed, so that the two steel pipe piles are integrated and the gap between the two steel pipe piles is sealed. The steel pipe pile assembly is adopted for foundation pit enclosure, so that an integral steel pipe pile enclosure system integrating soil retaining and anti-permeability performance is formed, and the steel pipe pile assembly is based on good performances of high strength, high rigidity and high stability; in the pile sinking process, the thin wall of the steel pipe pile is driven, the soil squeezing effect is not obvious, and the construction process is simple and the construction efficiency is high; the construction of accessible fore shaft overlap joint between the steel-pipe pile need not to arrange the stagnant water curtain outside the hole, has reduced the production of construction noise and building rubbish, accords with the theory of green construction.
Drawings
Fig. 1 is a schematic structural diagram of a single steel pipe pile in a steel pipe pile assembly and a locking port pair in a matched arrangement in an embodiment of the invention;
FIG. 2 is a top view of a steel pipe pile assembly according to an embodiment of the present invention;
FIG. 3 is a side view of a steel pipe pile assembly according to an embodiment of the invention;
fig. 4 is a partial schematic view of the steel pipe pile assembly according to an embodiment of the present invention, in which locking notches of two adjacent steel pipe piles are engaged and sealed with each other.
In the figure:
1-steel pipe pile;
2-locking the notch;
3-reinforcing ring plate.
Detailed Description
The steel pipe pile assembly, the foundation pit support structure and the construction method thereof according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Please refer to fig. 2, which is a top view of a steel pipe pile assembly according to an embodiment of the present invention. As shown in fig. 2, the steel pipe pile assembly includes: at least two steel pipe piles 1 arranged in parallel and a locking notch pair matched with the steel pipe piles 1; wherein, two locking notches 2 in each locking notch pair are arranged in axial symmetry relative to the steel pipe pile 1 matched with the locking notches; the locking notches 2 on two adjacent steel pipe piles 1 are mutually occluded and sealed, so that the two steel pipe piles 1 are integrated and the gap between the two steel pipe piles 1 is sealed. The number of the steel pipe piles 1 in the concrete steel pipe pile assembly is not limited, the actual number is selected according to the number of the steel pipe piles 1 required on one side of a foundation pit, and then the locking notch pairs with the matched number are correspondingly selected, and the mutual interlocking sealing of the locking notches 2 on the two adjacent steel pipe piles 1 is completed in the stage of prefabricating the steel pipe pile assembly, so that all the steel pipe piles 1 form an integral steel pipe pile enclosure system integrating subsequent soil retaining and anti-permeability performances into a whole through the interlocking and lapping of the locking notches 2. Preferably, the locking notches 2 in the locking notch pairs are all hot-rolled sleeve type locking notches.
Referring to fig. 2 and 4, fig. 4 is a partial schematic view of the steel pipe pile assembly when the locking notches of two adjacent steel pipe piles are engaged and sealed with each other. The interengaging seal comprises two parts: 1) mutually occluded; 2) and sealing after occlusion. The mutual engagement is the engagement and opposite insertion process of the two locking notches 2, and aims to combine the two separated steel pipe piles 1 into a whole; the sealing after occlusion is to seal the gap still existing after occlusion, and the purpose is to avoid the problem that the gap existing after occlusion has water seepage in the subsequent foundation pit support structure. In this embodiment, the manner of sealing in the mutual engagement sealing of the locking notches 2 on the two adjacent steel pipe piles 1 is as follows: the lap joint part of the locking openings 2 which are mutually occluded is sealed and reinforced by adopting a full-length welding line, so that the sealing and water stopping effects among the steel pipes are met.
In this embodiment, please refer to fig. 1, fig. 2, and fig. 3, and fig. 1 is a schematic structural diagram of a single steel pipe pile in a steel pipe pile assembly when the single steel pipe pile and a locking opening pair are configured in a matching manner. Fig. 3 is a side view of the steel pipe pile assembly. As shown in fig. 1, 2 and 3, the steel pipe pile assembly includes three steel pipe piles 1, the number of pairs of corresponding locking openings configured with the steel pipe piles 1 is three, and each pair of locking openings 2 is configured with one steel pipe pile 1. Specifically, each steel pipe pile 1 is made of a steel plate with the wall thickness of 14mm to form a spiral welded pipe, and two single steel pipe piles 1 are connected in an occluded overlapping mode through locking notches 2 welded to the two sides of each steel pipe pile 1 to form an integral steel pipe pile. Preferably, the three steel pipe piles 1 are arranged in parallel, and a reinforcing ring plate 3 with the thickness of 14mm is arranged at the top of the middle steel pipe pile 1 to improve the hoisting capacity; and welding the lug in 3 both sides of reinforcing ring plate as the hoisting point of steel-pipe pile subassembly in order to improve the hoist and mount ability, reinforcing ring plate 3 also is as the working face of pile sinking equipment anchor clamps simultaneously, convenient construction.
Further, please refer to fig. 1 and fig. 4; as shown in fig. 1 and 4, the steel pipe pile is made of Q345B, and the wall thickness of the steel pipe pile is 12mm to 16 mm; the outer diameter D of the steel pipe pile is 700-800 mm, and the corresponding size is selected according to engineering requirements; in the embodiment, the outer diameter D of the steel pipe pile is 800 mm; b is the effective width of the steel pipe pile, which is equal to the outer diameter D of the steel pipe pile and the total width B of the hot-rolled sleeve type locking notch, wherein the total width B of the hot-rolled sleeve type locking notch is the total width of two engaged hot-rolled sleeve type locking notches, and the proper size is designed according to the selected steel pipe pile; t is the thickness of the hot-rolled sleeve type locking notch, and the proper size can be designed according to the selected steel pipe pile.
In another embodiment, the invention further provides a foundation pit support structure, which comprises a plurality of steel pipe pile assemblies as described above, so as to perform foundation pit support construction. Specifically, the construction process of the foundation pit support structure is as follows: hot-rolling sleeve type locking notch welding is carried out simultaneously in a steel pipe pile prefabricating factory to realize prefabrication of a steel pipe pile assembly; and then, the prefabricated steel pipe pile assembly is transported to a construction site through a transport vehicle, the truck crane is matched with pile machine equipment, lifting lugs of the reinforcing ring plate are used for lifting and positioning, meanwhile, a guide frame is arranged at a designed pile position to control pile sinking verticality of the steel pipe pile assembly, and finally, a resonance-free hydraulic vibration hammer is selected for carrying out primary pile sinking operation to complete construction of the steel pipe pile assembly on one side of the foundation pit, so that the foundation pit support structure with accurate positioning, simple process and soil blocking and permeability resistance in an integrated manner under a complex environment is realized. In the whole construction process, each side of the foundation pit is hoisted once and sunk once, the construction of a steel pipe pile assembly is completed once, the whole process is simple, and the construction speed is high.
The steel pipe pile assembly provided by the invention is used for construction of a foundation pit enclosure structure system, and has the following advantages:
1) the locking notch pairs are arranged on the steel pipe piles in a matched mode, and locking notches on two adjacent steel pipe piles are mutually occluded and sealed to form a good water stopping effect;
2) the steel pipe pile assembly is adopted for pile sinking construction, the field process is simple, and the construction speed is high;
3) the method has the advantages of low requirement on construction sites, low pollution to surrounding environment and high greening construction degree.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (10)
1. A steel pipe pile assembly, comprising: at least two steel pipe piles arranged in parallel and a locking notch pair matched with the steel pipe piles; wherein, two locking notches in each locking notch pair are arranged in axial symmetry relative to the steel pipe pile matched with the locking notches; the locking notches on two adjacent steel pipe piles are mutually occluded and sealed, so that the two steel pipe piles are integrated and the gap between the two steel pipe piles is sealed.
2. The steel pipe pile assembly according to claim 1, wherein the locking notches of the locking notch pair are each a hot rolled sleeve type locking notch.
3. The steel pipe pile assembly according to claim 1, wherein the locking notches of two adjacent steel pipe piles are sealed in an interlocking seal mode by: and sealing the overlapped part of the mutually occluded locking notches by adopting a full-length welding line.
4. The steel pipe pile assembly according to claim 1, wherein the steel pipe pile is made of Q345B, and the steel pipe pile has a wall thickness of 12mm to 16 mm.
5. The steel pipe pile assembly according to claim 4, wherein the steel pipe pile has an outer diameter of 700mm to 800 mm.
6. The steel pipe pile assembly according to claim 1, comprising: the steel pipe piles are arranged in parallel, and a reinforcing ring plate is arranged at the top of the steel pipe pile in the middle.
7. The steel pipe pile assembly according to claim 6, wherein the reinforcement ring plate has a thickness of 14 mm.
8. The steel pipe pile assembly according to claim 6, further comprising lifting lugs provided at both sides of the reinforcing ring plate.
9. A foundation pit enclosure structure, characterized by comprising a plurality of steel pipe pile assemblies according to any one of claims 1-8.
10. A construction method of a foundation pit support structure is characterized by comprising the following steps:
transporting the prefabricated steel pipe pile assembly of any one of claims 1-8 to a construction site;
the following steps are carried out on each side of the foundation pit:
when the steel pipe pile assembly is lifted to be in place, arranging a guide frame at a designed pile position to control the pile sinking verticality of the steel pipe pile assembly;
and performing pile sinking construction on the steel pipe pile assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910902656.5A CN110644472A (en) | 2019-09-24 | 2019-09-24 | Steel pipe pile assembly, foundation pit support structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910902656.5A CN110644472A (en) | 2019-09-24 | 2019-09-24 | Steel pipe pile assembly, foundation pit support structure and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110644472A true CN110644472A (en) | 2020-01-03 |
Family
ID=69011146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910902656.5A Pending CN110644472A (en) | 2019-09-24 | 2019-09-24 | Steel pipe pile assembly, foundation pit support structure and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110644472A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011117198A (en) * | 2009-12-03 | 2011-06-16 | Ohbayashi Corp | Earth retaining structure and construction method of the same |
| CN205224013U (en) * | 2015-12-21 | 2016-05-11 | 郭永 | But recovery type steel diaphragm wall |
| CN208965567U (en) * | 2018-09-30 | 2019-06-11 | 中交第三航务工程局有限公司 | Fore shaft steel-pipe pile and its steel cofferdam of formation |
| CN215105387U (en) * | 2021-07-13 | 2021-12-10 | 浙江鸿晨建筑工程设计研究有限公司 | Larsen steel sheet pile and double-row space combined type foundation pit supporting structure of steel pipe pile |
-
2019
- 2019-09-24 CN CN201910902656.5A patent/CN110644472A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011117198A (en) * | 2009-12-03 | 2011-06-16 | Ohbayashi Corp | Earth retaining structure and construction method of the same |
| CN205224013U (en) * | 2015-12-21 | 2016-05-11 | 郭永 | But recovery type steel diaphragm wall |
| CN208965567U (en) * | 2018-09-30 | 2019-06-11 | 中交第三航务工程局有限公司 | Fore shaft steel-pipe pile and its steel cofferdam of formation |
| CN215105387U (en) * | 2021-07-13 | 2021-12-10 | 浙江鸿晨建筑工程设计研究有限公司 | Larsen steel sheet pile and double-row space combined type foundation pit supporting structure of steel pipe pile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111395351B (en) | Assembled supporting structure of foundation pit and supporting construction method | |
| CN210368983U (en) | Supporting construction that bored concrete pile and underground continuous wall combined together | |
| CN107460882A (en) | A kind of retaining piles construction method of deep basal pit closing sealing | |
| CN114150749A (en) | Construction method for non-stop connection of new and old sewage wells | |
| CN113513015A (en) | Semi-prefabricated concrete reinforcement cage underground continuous wall and construction method | |
| CN112832228B (en) | Positioning and water stopping device for reinforcement cage of underground continuous wall and construction method | |
| CN111809662B (en) | Subway station underground structure combination construction method | |
| CN110644472A (en) | Steel pipe pile assembly, foundation pit support structure and construction method thereof | |
| CN216973425U (en) | Inclined prefabricated steel pile foundation pit supporting system capable of being supported and excavated firstly | |
| CN113293766B (en) | Comprehensive earth excavation method for large-scale cover-excavation top-down T-shaped transfer subway station | |
| CN212835466U (en) | Waterproof curtain for repairing polluted site | |
| CN108547286A (en) | A kind of prefabricated guide groove structure of concrete cut and guide groove installation method | |
| CN211037035U (en) | Install elevator steel construction pit additional | |
| CN111827265A (en) | Construction method of steel reinforced concrete underground continuous wall | |
| CN110093945B (en) | Pit with elevator steel structure | |
| CN113684822B (en) | Construction method of offshore implantable rock-socketed pile | |
| CN212506224U (en) | Shear wall structural member of underground continuous wall | |
| CN215801751U (en) | Self-supporting mutually-buckled GRC prefabricated porous bearing platform side mold | |
| CN219410828U (en) | Spliced prefabricated underground continuous wall | |
| CN220057971U (en) | Tool type cast-in-place pile concrete pouring platform | |
| CN115467321B (en) | Two-wall-in-one multi-cavity type steel reinforced concrete composite structure and construction method thereof | |
| CN111827266B (en) | Method for constructing underground continuous wall by using steel caisson technology | |
| CN213926319U (en) | Assembled cylindrical steel cofferdam | |
| CN213358634U (en) | Concrete-filled steel tube-Larsen steel sheet pile composite structure for foundation pit enclosure | |
| CN213709536U (en) | Single-main-pipe annular multi-grouting-point post-grouting device for cast-in-place pile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200103 |
|
| WD01 | Invention patent application deemed withdrawn after publication |