CN114809008B - Turnover assembled foundation pit supporting structure and construction method - Google Patents
Turnover assembled foundation pit supporting structure and construction method Download PDFInfo
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- CN114809008B CN114809008B CN202210470421.5A CN202210470421A CN114809008B CN 114809008 B CN114809008 B CN 114809008B CN 202210470421 A CN202210470421 A CN 202210470421A CN 114809008 B CN114809008 B CN 114809008B
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- precast concrete
- baffle
- connecting column
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- rod piece
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/10—Prefabricated parts, e.g. composite sheet piles made of concrete or reinforced concrete
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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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/14—Sealing joints between adjacent sheet piles
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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
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
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- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an assembly type foundation pit supporting structure capable of turnover and a construction method, comprising a precast concrete baffle and precast concrete square piles, wherein the precast concrete baffle is provided with a plurality of groups and is sequentially connected, the back of the precast concrete baffle is provided with the precast concrete square piles, the precast concrete square piles are provided with a plurality of groups and are provided with connecting rod pieces I, and connecting rod pieces II are arranged between adjacent precast concrete square piles and precast concrete baffles; the hanging ring is installed on the top of precast concrete baffle, and the limbers have been seted up to precast concrete baffle upper end, and the drain hole has been seted up to precast concrete baffle one side of being opposite to precast concrete square pile, installs the infiltration area between limbers and the drain hole, and the limbers are suitable for along the infiltration area setting in the middle of precast concrete baffle and are linked together with the drain hole. The invention solves the problems of complicated construction, inconvenient installation and low recycling rate of the traditional foundation pit supporting engineering.
Description
Technical Field
The invention belongs to the field of foundation pit temporal part installation, and particularly relates to an assembly type foundation pit supporting structure capable of being turned over and a construction method.
Background
The foundation pit supporting engineering generally adopts common modes such as cement stirring supporting or filling piles and the like, the construction speed is low, excavation is possible when the concrete strength is expected to meet the requirement at a certain age, the construction cost is high, the construction process is complex, materials, personnel and equipment are involved, a large site is required to be used as a temporary storage yard, the construction efficiency can be greatly improved, the construction period is shortened, the construction period of the foundation pit supporting is shortened, and the construction cost of the foundation pit supporting engineering is greatly reduced by using the prefabricated parts for the foundation pit supporting with the adoption of the turnover assembled foundation pit supporting structure.
Disclosure of Invention
Compared with the traditional foundation pit supporting mode, the turnover assembled foundation pit supporting structure and method provided by the invention can greatly improve the foundation pit supporting construction efficiency, shorten the foundation pit supporting construction period, save labor force, recycle prefabricated parts, reduce the construction cost of foundation pit supporting engineering, and solve the technical problems of complicated construction, high construction cost and much labor force of the traditional foundation pit supporting engineering, and especially the installation is inconvenient.
In order to solve the technical problems, the inventor obtains the technical scheme of the invention through practice and summary, and the invention discloses an assembled foundation pit supporting structure capable of turnover, which comprises precast concrete baffles and precast concrete square piles, wherein the precast concrete baffles are provided with a plurality of groups, the precast concrete baffles are sequentially connected, the back of the precast concrete baffles is provided with the precast concrete square piles, the precast concrete square piles are provided with a plurality of groups, a first connecting rod piece is arranged between every two adjacent precast concrete square piles, and a second connecting rod piece is arranged between every two adjacent precast concrete square piles; a hanging ring is arranged at the top end of the precast concrete baffle, a water through hole is formed in the upper end of the precast concrete baffle, a water drain hole is formed in one side, opposite to the precast concrete square pile, of the precast concrete baffle, a water seepage belt is arranged between the water through hole and the water drain hole, and the water through hole is suitable for being arranged in the middle of the precast concrete baffle along the water seepage belt and is communicated with the water drain hole; and the two ends of the first connecting rod piece and the second connecting rod piece are respectively provided with a connecting embedded part, and the connecting embedded parts are respectively connected with the corresponding precast concrete baffle or precast concrete square pile.
Preferably, the connecting embedded part on the precast concrete square pile is at least three-sided, the first connecting rod piece comprises a first connecting column and a second connecting column, the first connecting column or the second connecting column is respectively connected with the corresponding connecting embedded part, the first connecting column and the second connecting column are oppositely provided with adjusting parts, and the adjusting parts are suitable for adjusting the distance between the first connecting column and the second connecting column.
Preferably, the adjusting piece comprises an adjusting bolt and a locking nut, the first connecting column and the second connecting column are both provided with connecting holes relatively, the connecting holes are threaded holes, the connecting holes are matched with the adjusting bolt, at least two groups of locking nuts are arranged on the adjusting bolt, and the locking nuts are suitable for locking the positions of the two ends of the adjusting bolt, which are opposite to the first connecting column and the second connecting column.
Preferably, the bottom of the precast concrete baffle is provided with a plate bottom pillar, and the bottom of the plate bottom pillar is provided with a chamfer angle which is 30-45 degrees.
Preferably, the infiltration area sets up on precast concrete baffle back, just the equidistant horizontal and vertical and at least three of each distribution of infiltration area distributes.
Preferably, the water discharge holes are arranged on the outer side of the precast concrete baffle and are in rectangular distribution, and the vertical distance is larger than half of the height of the precast concrete baffle.
Preferably, the connecting embedded part comprises a connecting plate, a first mounting hole is formed in the connecting plate, a second mounting hole is correspondingly formed in the precast concrete square pile, the first mounting hole is matched with the second mounting hole, a connecting threaded column is mounted in the second mounting hole, and the connecting threaded column is sleeved on the first mounting hole and is suitable for being locked by a mounting nut;
the first connecting column or the second connecting column is fixedly connected with the corresponding connecting plate respectively.
Preferably, the lower part of the precast concrete square pile is provided with a tip, and the first connecting rod piece and the second connecting rod piece have the same structure.
Preferably, the second connecting rod member includes a third connecting column, the length of the first connecting column is greater than the length of the second connecting column, the length of the third connection is less than the length of the second connecting column, a rotating part is installed on the third connecting column and located at one end far away from the precast concrete baffle, the rotating part rotates on the third connecting column, a threaded column is installed at one side of the rotating part, opposite to the precast concrete baffle, and the threaded column is suitable for being installed in another group of third connecting columns in a threaded manner.
The construction method of the turnover assembled foundation pit supporting structure comprises the following steps:
prefabricating and processing a precast concrete baffle, a precast concrete square pile, a first connecting rod piece and a second connecting rod piece in a prefabrication processing plant;
firstly, measuring and paying off according to a required position, and sequentially driving precast concrete square piles to ground elevation by adopting pile pressing equipment;
secondly, pressing the precast concrete baffle to the ground elevation by using pressure equipment according to the edge position of the foundation pit;
thirdly, connecting adjacent precast concrete square piles by adopting an adjustable connecting rod piece I, and connecting the precast concrete square piles with a precast concrete baffle by adopting an adjustable connecting rod piece II;
fourthly, grouting cement slurry is injected between the precast concrete baffles in a grouting mode to seal gaps between the baffles for water stop;
and fifthly, after the foundation pit excavation and backfilling are completed, removing the first connecting rod piece and the second connecting rod piece, extracting the precast concrete baffle and the precast concrete square pile by adopting pile extracting equipment, and carrying out next turnover use.
Compared with the prior art, the invention has the beneficial effects that:
compared with the traditional foundation pit supporting mode, the invention can greatly improve the construction efficiency of foundation pit supporting, shorten the construction period of foundation pit supporting, save labor force, simplify the construction process, and reduce the construction cost of foundation pit supporting engineering by repeatedly utilizing prefabricated parts, thereby solving the problems of complicated construction, long construction period, high construction cost and more labor force investment of the traditional foundation pit supporting engineering.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to those skilled in the art that other drawings can be obtained according to these drawings without inventive effort.
FIG. 1 is a construction diagram of a support structure installation of the present invention;
FIG. 2 is an elevation view of the precast concrete deck of FIG. 1;
FIG. 3 is a block diagram of a connection rod of the present invention;
fig. 4 is a side cross-sectional view of a second connecting rod member of the present invention.
In the figure: 1. prefabricating a concrete baffle; 2. prefabricating concrete square piles; 3. a first connecting rod piece; 4. a second connecting rod piece; 5. a connecting plate; 6. a first threaded post; 11. a hanging shackle; 12. a water seepage belt; 13. a water through hole; 15. a plate bottom support column; 16. a water discharge hole; 31. a first connection post; 32. a second connection post; 33. an adjusting bolt; 34. a lock nut; 41. a third connecting column; 42. a rotating part; 43. and a second threaded post.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The principles of the invention will be further described with reference to the drawings and specific examples.
Example 1
Referring to fig. 1 to 3, an assembled foundation pit supporting structure capable of turnover comprises precast concrete baffles 1 and precast concrete square piles 2, wherein the precast concrete baffles 1 are provided with a plurality of groups, the precast concrete baffles 1 are sequentially connected, the precast concrete square piles 2 are installed at the back of the precast concrete baffles 1, the precast concrete square piles 2 are provided with a plurality of groups, a connecting rod piece I3 is installed between adjacent precast concrete square piles 2, and a connecting rod piece II 4 is installed between the adjacent precast concrete square piles 2 and the precast concrete baffles 1; a hanging ring 11 is arranged at the top end of the precast concrete baffle 1, a water through hole 13 is formed in the upper end of the precast concrete baffle 1, a water drain hole 16 is formed in one side, facing away from the precast concrete square pile 2, of the precast concrete baffle 1, a water seepage belt 12 is arranged between the water through hole 13 and the water drain hole 16, and the water through hole 13 is suitable for being arranged in the middle of the precast concrete baffle 1 along the water seepage belt 12 and is communicated with the water drain hole 16; and the two ends of the first connecting rod piece 3 and the second connecting rod piece 4 are respectively provided with a connecting embedded part, and the connecting embedded parts are respectively connected with the corresponding precast concrete baffle 1 or the precast concrete square pile 2.
The connecting embedded part positioned on the precast concrete square pile 2 is at least provided with three sides, the first connecting rod piece 3 comprises a first connecting column 31 and a second connecting column 32, the first connecting column 31 or the second connecting column 32 are respectively connected with the corresponding connecting embedded part, the first connecting column 31 and the second connecting column 32 are oppositely provided with adjusting parts, and the adjusting parts are suitable for adjusting the distance between the first connecting column 31 and the second connecting column 32.
The adjusting piece comprises an adjusting bolt 33 and a locking nut 34, wherein the first connecting column 31 and the second connecting column 32 are correspondingly provided with connecting holes, the connecting holes are threaded holes, the connecting holes are matched with the adjusting bolt 33, at least two groups of locking nuts 34 are arranged on the adjusting bolt 33, and the locking nuts 34 are suitable for locking positions of two ends of the adjusting bolt 33 relative to the first connecting column 31 and the second connecting column 32.
Preferably, the bottom of the precast concrete baffle 1 is provided with a plate bottom pillar 15, and the bottom of the plate bottom pillar 15 is provided with a chamfer angle of 45 °.
The water seepage belt 12 is arranged on the back of the precast concrete baffle 1, and the water seepage belts 12 are distributed transversely and vertically at equal intervals and are distributed three times respectively. The water discharge holes 16 are arranged on the outer side of the precast concrete baffle 1 in four groups in rectangular distribution, and the vertical spacing is larger than half of the height of the precast concrete baffle 1.
Preferably, the connecting embedded part comprises a connecting plate 5, a first mounting hole is formed in the connecting plate 5, a second mounting hole is correspondingly formed in the precast concrete square pile 2, the first mounting hole is matched with the second mounting hole, a first threaded column 6 is arranged in the second mounting hole, and the first threaded column 6 is sleeved on the first mounting hole and is suitable for being locked by a mounting nut;
the first connecting column 31 or the second connecting column 32 is fixedly connected with the corresponding connecting plate 5. The lower part of the precast concrete square pile 2 is provided with a tip, and the first connecting rod piece 3 and the second connecting rod piece 4 have the same structure.
The construction method of the turnover assembled foundation pit supporting structure comprises the following steps:
prefabricating and processing a precast concrete baffle 1, a precast concrete square pile 2, a first connecting rod piece 3 and a second connecting rod piece 4 in a prefabrication processing plant;
firstly, measuring and paying off according to a required position, and sequentially driving precast concrete square piles 2 to ground elevation by adopting pile pressing equipment;
secondly, pressing the precast concrete baffle 1 to the ground elevation by using pressure equipment according to the edge position of the foundation pit;
thirdly, connecting adjacent precast concrete square piles 2 by adopting an adjustable connecting rod piece I3, and connecting the precast concrete square piles 2 with the precast concrete baffle 1 by adopting an adjustable connecting rod piece II 4;
fourthly, grouting cement slurry is injected between the precast concrete baffles 1 to seal gaps between the baffles to stop water;
and fifthly, after the foundation pit excavation and backfilling are completed, dismantling the first connecting rod piece 3 and the second connecting rod piece 4, extracting the precast concrete baffle 1 and the precast concrete square pile 2 by adopting pile extracting equipment, and carrying out next turnover in the field.
Example 2
In the above embodiment, referring to fig. 1 to 4, in fig. 4, on the basis of example 1, the second connecting rod 4 includes a third connecting post 41, the length of the first connecting post 31 is greater than the length of the second connecting post 32, the length of the third connection is less than the length of the second connecting post 32, a rotating part 42 is mounted on the third connecting post 41 at an end far from the precast concrete deck 1, the rotating part 42 rotates on the third connecting post 41, a second screw post 43 is mounted at a side of the rotating part 42 opposite to the precast concrete deck 1, and the second screw post 43 is adapted to be screw-mounted in another set of third connecting posts 41.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. An assembled foundation ditch supporting construction that can have enough to meet need, its characterized in that: the concrete pile comprises precast concrete baffles (1) and precast concrete square piles (2), wherein the precast concrete baffles (1) are provided with a plurality of groups, the precast concrete baffles (1) are sequentially connected with one another, the precast concrete square piles (2) are arranged at the back of the precast concrete baffles (1), the precast concrete square piles (2) are provided with a plurality of groups, a first connecting rod piece (3) is arranged between every two adjacent precast concrete square piles (2), and a second connecting rod piece (4) is arranged between every two adjacent precast concrete square piles (2) and each precast concrete baffle (1); a hanging hook ring (11) is arranged at the top end of the precast concrete baffle (1), a water through hole (13) is formed in the upper end of the precast concrete baffle (1), a water drain hole (16) is formed in one side, opposite to the precast concrete square pile (2), of the precast concrete baffle (1), a water seepage belt (12) is arranged between the water through hole (13) and the water drain hole (16), and the water through hole (13) is suitable for being arranged in the middle of the precast concrete baffle (1) along the water seepage belt (12) and is communicated with the water drain hole (16); the two ends of the first connecting rod piece (3) and the second connecting rod piece (4) are respectively provided with a connecting embedded part, and the connecting embedded parts are respectively connected with the corresponding precast concrete baffle (1) or precast concrete square pile (2);
the connecting embedded parts positioned on the precast concrete square piles (2) are at least provided with three sides, the first connecting rod piece (3) comprises a first connecting column (31) and a second connecting column (32), the first connecting column (31) or the second connecting column (32) are respectively connected with the corresponding connecting embedded parts, adjusting parts are arranged on the first connecting column (31) and the second connecting column (32) in a relative mode, and the adjusting parts are suitable for adjusting the distance between the first connecting column (31) and the second connecting column (32);
the adjusting piece comprises an adjusting bolt (33) and a locking nut (34), wherein connecting holes are formed in the first connecting column (31) and the second connecting column (32) relatively, the connecting holes are threaded holes, the connecting holes are matched with the adjusting bolt (33), at least two groups of locking nuts (34) are arranged on the adjusting bolt (33), and the locking nuts (34) are suitable for locking positions of two ends of the adjusting bolt (33) relatively to the first connecting column (31) and the second connecting column (32);
the connecting embedded part comprises a connecting plate (5), a first mounting hole is formed in the connecting plate (5), a second mounting hole is correspondingly formed in the precast concrete square pile (2), the first mounting hole is matched with the second mounting hole, a first threaded column (6) is arranged in the second mounting hole, and the first threaded column (6) is sleeved on the first mounting hole and is suitable for being locked by a mounting nut;
the first connecting column (31) or the second connecting column (32) is fixedly connected with the corresponding connecting plate (5) respectively;
the second connecting rod piece (4) comprises a third connecting column (41), the length of the first connecting column (31) is larger than that of the second connecting column (32), the length of the third connecting column (41) is smaller than that of the second connecting column (32), a rotating part (42) is arranged on the third connecting column (41) which is located at one end far away from the precast concrete baffle (1), the rotating part (42) rotates on the third connecting column (41), a second threaded column (43) is arranged on one side of the rotating part (42) opposite to the precast concrete baffle (1), and the second threaded column (43) is suitable for being installed in another group of third connecting columns (41) in a threaded mode.
2. The epicyclic assembled foundation pit supporting structure of claim 1, wherein: the bottom of the precast concrete baffle (1) is provided with a plate bottom support column (15), and the bottom of the plate bottom support column (15) is provided with a chamfer angle which is 30-45 degrees.
3. The epicyclic assembled foundation pit supporting structure of claim 2, wherein: the water seepage belt (12) is arranged on the back of the precast concrete baffle (1), and the water seepage belts (12) are distributed transversely and vertically at equal intervals and are distributed at least three times respectively.
4. The epicyclic assembled foundation pit supporting structure of claim 1, wherein: the water discharge holes (16) are formed in the outer side of the precast concrete baffle (1) and are in rectangular distribution, and vertical intervals are larger than half of the height of the precast concrete baffle (1).
5. A method of constructing an epicyclic assembled foundation pit supporting structure according to claim 1, comprising the steps of:
prefabricating and processing a precast concrete baffle (1), a precast concrete square pile (2), a first connecting rod piece (3) and a second connecting rod piece (4) in a prefabrication processing plant;
firstly, measuring and paying off according to a required position, and sequentially driving precast concrete square piles (2) to ground elevation by adopting pile pressing equipment;
secondly, pressing the precast concrete baffle (1) to the ground elevation sequentially by using pressure equipment according to the edge position of the foundation pit;
thirdly, connecting adjacent precast concrete square piles (2) by adopting an adjustable connecting rod piece I (3), and connecting the precast concrete square piles (2) and the precast concrete baffle (1) by adopting an adjustable connecting rod piece II (4);
fourthly, grouting is adopted between the precast concrete baffles (1) to fill cement slurry to seal gaps between the baffles for water stop;
fifthly, after excavation and backfilling of the foundation pit are completed, the first connecting rod piece (3) and the second connecting rod piece (4) which are adjustable are removed, the precast concrete baffle (1) and the precast concrete square pile (2) are pulled out by pile pulling equipment, and the prefabricated concrete square pile is transported out of the site for next turnover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210470421.5A CN114809008B (en) | 2022-04-28 | 2022-04-28 | Turnover assembled foundation pit supporting structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210470421.5A CN114809008B (en) | 2022-04-28 | 2022-04-28 | Turnover assembled foundation pit supporting structure and construction method |
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| Publication Number | Publication Date |
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| CN114809008A CN114809008A (en) | 2022-07-29 |
| CN114809008B true CN114809008B (en) | 2023-06-09 |
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| CN202210470421.5A Active CN114809008B (en) | 2022-04-28 | 2022-04-28 | Turnover assembled foundation pit supporting structure and construction method |
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Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000282469A (en) * | 1999-03-31 | 2000-10-10 | Hazama Gumi Ltd | Cut-beam type earth retaining timbering and pit excavation method |
| CN113431082B (en) * | 2021-05-27 | 2022-08-26 | 中电建铁路建设投资集团有限公司 | Fast-assembly retaining wall structure and construction method thereof |
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